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                        ALLBRITTON COMMUNICATIONS COMPANY


                              SERIES A AND SERIES B


             7 3/4% SENIOR SUBORDINATED NOTES DUE DECEMBER 15, 2012


                         -------------------------------

                                    INDENTURE

                          Dated as of December 20, 2002



                       STATE STREET BANK AND TRUST COMPANY

                         -------------------------------

                                     Trustee







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                             CROSS-REFERENCE TABLE*


Trust Indenture
Act Section                                                    Indenture Section
310      (a)(1)..................................................    7.10
         (a)(2)..................................................    7.10
         (a)(3)..................................................    N.A.
         (a)(4)..................................................    N.A.
         (a)(5)..................................................    7.10
         (b).....................................................    7.10
         (c).....................................................    N.A.
311      (a).....................................................    7.11
         (b).....................................................    7.11
         (c).....................................................    N.A.
312      (a).....................................................    2.05
         (b).....................................................    12.03
         (c).....................................................    12.03
313      (a).....................................................    7.06
         (b)(1)..................................................    11.03
         (b)(2)..................................................    7.06; 7.07
         (c).....................................................    7.06; 12.02
         (d).....................................................    7.06
314      (a).....................................................    4.03; 12.02
         (b).....................................................    N.A.
         (c)(1)..................................................    12.04
         (c)(2)..................................................    12.04
         (d).....................................................    N.A.
         (e).....................................................    N.A.
         (f).....................................................    12.05
315      (a).....................................................    N.A.
         (b).....................................................    7.01
         (c).....................................................    7.05; 12.02
         (d).....................................................    7.01
         (e).....................................................    7.01
316      (a) (last sentence).....................................    6.11
         (a)(1)(A)...............................................    2.09
         (ac)(1)(B)..............................................    6.05
         (a)(2)..................................................    6.04
         (b).....................................................    6.04
         (c).....................................................    N.A.
         (d).....................................................    6.07
         (33e)...................................................    2.12
317      (a)(1)..................................................    6.08
         (a)(2)..................................................    6.09
         (b).....................................................    2.04
318      (a).....................................................    12.01
         (b).....................................................    N.A.
         (c).....................................................    12.01


N.A. means not applicable.

*This Cross-Reference Table is not part of the Indenture.





                                TABLE OF CONTENTS

                                                                            Page
                                    ARTICLE 1

                   DEFINITIONS AND INCORPORATION BY REFERENCE

Section 1.01.    Definitions...................................................1
Section 1.02.    Other Definitions............................................10
Section 1.03.    Incorporation by Reference of Trust Indenture Act............10
Section 1.04.    Rules of Construction........................................11

                                    ARTICLE 2

                                    THE NOTES

Section 2.01.    Form and Dating..............................................11
Section 2.02.    Execution and Authentication.................................12
Section 2.03.    Registrar and Paying Agent...................................12
Section 2.04.    Paying Agent To Hold Money in Trust..........................13
Section 2.05.    Holder Lists.................................................13
Section 2.06.    Transfer and Exchange........................................13
Section 2.07.    Replacement Notes............................................18
Section 2.08.    Outstanding Notes............................................19
Section 2.09.    Treasury Notes...............................................19
Section 2.10.    Temporary Notes..............................................19
Section 2.11.    Cancellation.................................................19
Section 2.12.    Record Date..................................................20
Section 2.13.    Defaulted Interest...........................................20
Section 2.14.    Issuance of Additional Notes.................................20

                                    ARTICLE 3

                            REDEMPTION AND PREPAYMENT

Section 3.01.    Notices to Trustee...........................................21
Section 3.02.    Selection of Notes To Be Redeemed............................21
Section 3.03.    Notice of Redemption.........................................21
Section 3.04.    Effect of Notice of Redemption...............................22
Section 3.05.    Deposit of Redemption Price..................................22
Section 3.06.    Notes Redeemed in Part.......................................23
Section 3.07.    Optional Redemption..........................................23
Section 3.08.    Mandatory Redemption.........................................23
Section 3.09.    [INTENTIONALLY OMITTED]......................................24
Section 3.10.    Offer To Purchase by Application of Excess Proceeds..........24


                                      -i-


                                                                            Page
                                    ARTICLE 4

                                    COVENANTS

Section 4.01.    Payment of Notes.............................................25
Section 4.02.    Maintenance of Office or Agency..............................26
Section 4.03.    Reports......................................................26
Section 4.04.    Compliance Certificate.......................................26
Section 4.05.    Taxes........................................................27
Section 4.06.    Stay, Extension and Usury Laws...............................27
Section 4.07.    Restricted Payments..........................................27
Section 4.08.    Dividend and Other Payment Restrictions Affecting
                    Subsidiaries..............................................28
Section 4.09.    Incurrence of Debt and Issuance of Preferred Stock...........29
Section 4.10.    Asset Sales..................................................30
Section 4.11.    Transactions With Affiliates.................................31
Section 4.12.    Liens Securing Subordinated Debt.............................31
Section 4.13.    Other Subordinated Debt......................................32
Section 4.14.    Corporate Existence..........................................32
Section 4.15.    Change of Control............................................32

                                    ARTICLE 5

                                   SUCCESSORS

Section 5.01.    Merger, Consolidation or Sale of Assets......................33
Section 5.02.    Successor Corporation Substituted............................33

                                    ARTICLE 6

                              DEFAULTS AND REMEDIES

Section 6.01.    Events of Default............................................34
Section 6.02.    Acceleration.................................................35
Section 6.03.    Other Remedies...............................................36
Section 6.04.    Waiver of Past Defaults......................................36
Section 6.05.    Control by Majority..........................................36
Section 6.06.    Limitation on Suits..........................................37
Section 6.07.    Rights of Holders of Notes To Receive Payment................37
Section 6.08.    Collection Suit by Trustee...................................37
Section 6.09.    Trustee May File Proofs of Claim.............................37
Section 6.10.    Priorities...................................................38
Section 6.11.    Undertaking for Costs........................................38

                                    ARTICLE 7

                                     TRUSTEE

Section 7.01.    Duties of Trustee............................................38
Section 7.02.    Rights of Trustee............................................39

                                      -ii-


                                                                            Page

Section 7.03.    Individual Rights of Trustee.................................40
Section 7.04.    Trustee's Disclaimer.........................................40
Section 7.05.    Notice of Default............................................40
Section 7.06.    Reports by Trustee to Holders of the Notes...................40
Section 7.07.    Compensation and Indemnity...................................41
Section 7.08.    Replacement of Trustee.......................................41
Section 7.09.    Successor Trustee by Merger, Etc.............................42
Section 7.10.    Eligibility, Disqualification................................42
Section 7.11.    Preferential Collection of Claims Against the Company........42

                                    ARTICLE 8

                    LEGAL DEFEASANCE AND COVENANT DEFEASANCE

Section 8.01.    Option To Effect Legal Defeasance or Covenant
                    Defeasance................................................43
Section 8.02.    Legal Defeasance and Discharge...............................43
Section 8.03.    Covenant Defeasance..........................................43
Section 8.04.    Conditions to Legal or Covenant Defeasance...................44
Section 8.05.    Deposited Money and Government Securities To Be
                    Held in Trust; Other Miscellaneous Provisions.............45
Section 8.06.    Repayment to the Company.....................................45
Section 8.07.    Reinstatement................................................45

                                    ARTICLE 9

                        AMENDMENT, SUPPLEMENT AND WAIVER

Section 9.01.    Without Consent of Holders...................................46
Section 9.02.    With Consent of Holders of Notes.............................46
Section 9.03.    Compliance with Trust Indenture Act..........................47
Section 9.04.    Revocation and Effect of Consents............................48
Section 9.05.    Notation on or Exchange of Notes.............................48
Section 9.06.    Trustee To Sign Amendments, Etc..............................48

                                   ARTICLE 10

                           SATISFACTION AND DISCHARGE

Section 10.01.   Satisfaction and Discharge...................................48
Section 10.02.   Application of Trust Money...................................49

                                   ARTICLE 11

                                  SUBORDINATION

Section 11.01.   Agreement To Subordinate.....................................49
Section 11.02.   Certain Definitions..........................................49
Section 11.03.   Liquidation; Dissolution; Bankruptcy.........................50
Section 11.04.   Default on Designated Senior Debt............................50

                                      -iii-


                                                                            Page

Section 11.05.   Acceleration of Notes........................................51
Section 11.06.   When Distribution Must Be Paid Over..........................51
Section 11.07.   Notice by Company............................................52
Section 11.08.   Subrogation..................................................52
Section 11.09.   Relative Rights..............................................52
Section 11.10.   Subordination May Not Be Impaired by Company.................52
Section 11.11.   Distribution or Notice to Representative.....................52
Section 11.12.   Rights of Trustee and Paying Agent...........................53
Section 11.13.   Authorization To Effect Subordination........................53
Section 11.14.   Amendments...................................................53

                                   ARTICLE 12

                                  MISCELLANEOUS

Section 12.01.   Trust Indenture Act Controls.................................53
Section 12.02.   Notices......................................................53
Section 12.03.   Communication by Holders of Notes with Other Holders
                    of Notes..................................................55
Section 12.04.   Certificate of Opinion as to Conditions Precedent............55
Section 12.05.   Statements Required in Certificate or Opinion................55
Section 12.06.   Rules by Trustee and Agents..................................55
Section 12.07.   No Personal Liability of Directors, Officers, Employees
                    and Stockholders..........................................55
Section 12.08.   Governing Law................................................56
Section 12.09.   No Adverse Interpretation of Other Agreements................56
Section 12.10.   Successors...................................................56
Section 12.11.   Severability.................................................56
Section 12.12.   Counterpart Originals........................................56
Section 12.13.   Table of Contents, Headings, Etc.............................56

EXHIBITS
- --------

Exhibit A        FORM OF NOTE
Exhibit B        CERTIFICATE OF TRANSFEROR
Exhibit C        FORM OF CERTIFICATE
Exhibit D        FORM OF INTERCOMPANY NOTE


                                      -iv-




         INDENTURE   dated  as  of   December   20,  2002   between   ALLBRITTON
COMMUNICATIONS  COMPANY,  a Delaware  corporation (the "Company" or "ACC"),  and
STATE STREET BANK AND TRUST COMPANY, a Massachusetts  trust company,  as trustee
(the "Trustee").

         The Company  and the  Trustee  agree as follows for the benefit of each
other and for the equal and ratable  benefit of the holders (the  "Holders")  of
the 7 3/4% Series A Senior Subordinated Notes due December 15, 2012 (the "Series
A Notes")  (including  Additional Notes, if any, issued from time to time in the
form of the Notes  attached  hereto as Exhibit A) and the 7 3/4% Series B Senior
Subordinated  Notes  due  December  15,  2012 (the  "Series B Notes"  (including
Additional  Notes,  if any,  issued  from  time to time in the form of the Notes
attached  hereto  as  Exhibit  A) and,  together  with the  Series A Notes,  the
"Notes"):

                                    ARTICLE 1

                   DEFINITIONS AND INCORPORATION BY REFERENCE

Section 1.01.     Definitions.
                  -----------

         "ACC" means Allbritton Communications Company, a Delaware corporation.

         "ACC Common  Stock"  means the common  stock of ACC, par value $.05 per
share.

         "Acquired Debt" of any specified  Person means Debt of any other Person
existing  at the  time  such  other  Person  merged  with or into  or  became  a
Subsidiary of such specified Person, including Debt incurred in connection with,
or in  contemplation  of,  such  other  Person  becoming  a  Subsidiary  of such
specified Person.

         "Additional Notes" means Notes having substantially identical terms and
conditions  as the  $275,000,000  aggregate  principal  amount of 7 3/4%  Senior
Subordinated Notes issued on the Issuance Date, issued pursuant to Article 2 and
in compliance with Section 4.09 of this Indenture

         "Affiliate" means a Person (a) that directly or indirectly  through one
or more intermediates  controls, is controlled by or is under direct or indirect
common  control  with ACC or any  Restricted  Subsidiary,  (b) that  directly or
indirectly through one or more  intermediaries  beneficially owns or holds 5% or
more of any class of voting stock of ACC or any Restricted  Subsidiary or (c) 5%
or  more  of the  voting  stock  (or in  the  case  of a  Person  that  is not a
corporation,  5% or more of the Equity Interests) of which is beneficially owned
or held by ACC or any Restricted Subsidiary. The term "control" (including, with
correlative meanings, the terms "controlling," "controlled by" and "under common
control with") shall mean the possession,  directly or indirectly,  of the power
to direct or cause the  direction  of the  management  and policies of a Person,
whether through the ownership of voting securities, by contract or otherwise.

         "Agent" means any Registrar, Paying Agent or co-registrar.

         "Applicable  Premium" means, with respect to a Note, the greater of (i)
1.0% of the then  outstanding  principal  amount  of such  Note and (ii) (a) the
present value of all remaining  required interest and principal  payments due on
such Note and all premium  payments  relating thereto assuming a redemption date
of December 15, 2007,  computed using a discount rate equal to the Treasury Rate
plus 50 basis points,  minus (b) the then  outstanding  principal amount of such
Note minus (c) accrued and unpaid interest paid on the date of redemption.

         "Asset Sale" means (a) any sale, lease, conveyance or other disposition
of  assets by ACC or a  Restricted  Subsidiary  (including  by way of a sale and
leaseback  transaction  other than a Capitalized  Lease  Obligation) and (b) any
sale or issuance of Equity Interests of a Restricted  Subsidiary,  in each case,
in one or more related transactions involving assets having a fair market value,
or that  result  in  aggregate  proceeds,  of $2.5  million


or more;  provided,  however,  that (i) Permitted  Asset Swaps and (ii) sales of
obsolete  equipment in the ordinary course of business shall not be deemed to be
Asset Sales.

         "Bankruptcy  Law" means Title 11, U.S.  Code or any similar  federal or
state law for the relief of debtors.

         "Board  of  Directors"  means  the Board of  Directors  of ACC,  or any
authorized committee thereof.

         "Broadcast Related Business" means any business,  the majority of whose
revenues are derived  from, or whose assets are used or useful in, the broadcast
of  television  or  radio  programming  and any  ancillary  businesses  relating
thereto.

         "Business Day" means any day other than a Legal Holiday.

          "Capital  Stock" of any Person  means any and all  shares,  interests,
rights to purchase, warrants, options, participations or other equivalents of or
interests in the common or preferred equity (however designated) of such Person,
including,  without  limitation,   partnership  interests  (whether  general  or
limited) and membership interests, but excluding convertible debt securities.

         "Capitalized  Lease  Obligation"  means, with respect to any Person for
any period,  an  obligation  of such Person to pay rent or other amounts under a
lease that is required to be  capitalized  for financial  reporting  purposes in
accordance with GAAP; and the amount of such obligation shall be the capitalized
amount shown on the balance  sheet of such Person as  determined  in  accordance
with GAAP.

         "Cash Equivalents" means (a) direct obligations of the United States of
America or any agency thereof, or obligations guaranteed by the United States of
America; provided that in each case such obligations mature within one year from
the date of acquisition thereof, (b) certificates of deposit maturing within one
year from the date of creation thereof issued by (i) any U.S.  national or state
banking institution having capital, surplus and undivided profits aggregating at
least  $250,000,000 and rated at least A by Standard & Poor's, a division of The
McGraw-Hill Companies, Inc. ("S&P"), and A by Moody's Investors Service, Inc. or
(ii) Riggs Bank N.A.,  (c) commercial  paper maturing  within 270 days after the
issuance  thereof  that has the highest  credit  rating of either S&P or Moody's
Investors Service,  Inc., (d) Riggs National Corporation Master Notes, each with
a stated  maturity the  duration of which shall not exceed two years,  (e) Riggs
Bank N.A. Eurodollar Deposits, each with a stated maturity the duration of which
shall not exceed two years, (f) Riggs Bank N.A. Repurchase Agreements, each with
a stated  maturity the  duration of which shall not exceed two years,  (g) Riggs
Bank N.A. Bankers Acceptances, each with a stated maturity the duration of which
shall not exceed  two years,  (h) Riggs  Bank N.A.  Eurodollar  Certificates  of
Deposit,  each with a stated maturity the duration of which shall not exceed two
years,  (i)  Riggs AP Bank  Ltd.  Certificates  of  Deposit,  each with a stated
maturity the duration of which shall not exceed two years, and (j) Riggs AP Bank
Ltd. Cash Eurodollar Deposits, each with a stated maturity the duration of which
shall not exceed two years.

         "Change of Control"  means (a) any  transaction  (including a merger or
consolidation)  the result of which is that any  Person or Group (as  defined in
Rule 13d-5 of the Exchange Act) other than the Principals acquires,  directly or
indirectly,  more than 50% of the total  voting  power of all  classes of voting
stock of ACC,  (b) any  transaction  (including a merger or  consolidation)  the
result of which is that any  Person or Group (as  defined  in Rule  13d-5 of the
Exchange Act) other than the Principals has a sufficient  number of its or their
nominees  elected to the Board of  Directors  of ACC or any entity  directly  or
indirectly  controlling  ACC such that such nominees so elected  (whether new or
continuing as directors)  shall  constitute a majority of the Board of Directors
of  ACC or  such  entity,  as the  case  may  be,  or  (c)  the  sale  of all or
substantially  all of the Capital  Stock or assets of ACC to any Person or Group
(as defined in Rule 13d-5 of the Exchange  Act) other than to the  Principals


                                      -2-


as an entirety or substantially as an entirety in one transaction or a series of
related  transactions or (d) the sale of the  broadcasting  property known as of
the date of this Indenture as WJLA-TV.

         "Company"   means   Allbritton   Communications  Company,  a   Delaware
corporation.

         "Consolidated   Net  Income"  means,   for  any  fiscal   period,   the
consolidated net earnings or loss of ACC and its Restricted  Subsidiaries as the
same would appear on a consolidated statement of earnings of ACC for such fiscal
period  prepared in accordance  with GAAP;  provided that (a) any  extraordinary
gain (but not loss) and any gain (but not loss) on sales of assets  outside  the
ordinary  course of business,  in each case together with any related  provision
for taxes,  realized  during such period shall be  excluded,  (b) the results of
operations of any Person acquired in a pooling of interests  transaction for any
period  prior to the date of such  acquisition  shall  be  excluded  and (c) net
income  attributable  to any Person  other than a Restricted  Subsidiary  of ACC
shall  be  included  only to the  extent  of the  amount  of cash  dividends  or
distributions actually paid to ACC or a Restricted Subsidiary of ACC during such
period.

         "Consolidated Net Worth" with respect to any Person means the equity of
the common  and  preferred  stockholders  of such  Person  and its  Subsidiaries
(excluding any redeemable  preferred  stock and any cumulated  foreign  currency
translation adjustment), as determined on a consolidated basis and in accordance
with GAAP.

         "Corporate  Trust Office of the Trustee" shall be at the address of the
Trustee specified in Section 12.02 of this Indenture or such other address as to
which the Trustee gives notice to ACC.

         "Cumulative  Operating  Cash Flow"  means,  with respect to ACC and its
Restricted  Subsidiaries,  as of any date of determination,  Operating Cash Flow
from June 30, 1992 to the end of ACC's most recently  ended full fiscal  quarter
prior to such date, taken as a single accounting period.

         "Cumulative  Total Interest Expense" means, with respect to ACC and its
Restricted Subsidiaries, as of any date of determination, Total Interest Expense
from June 30, 1992 to the end of ACC's most recently  ended full fiscal  quarter
prior to such date, taken as a single accounting period.

         "Debt"  of any  Person  as of any  date  means  and  includes,  without
duplication,  (a) all indebtedness of such Person,  contingent or otherwise,  in
respect of borrowed money,  including all interest,  fees and expenses owed with
respect  thereto  (whether or not the  recourse of the lender is to the whole of
the assets of such Person or only to a portion thereof),  or evidenced by bonds,
notes,  debentures  or similar  instruments,  or  representing  the deferred and
unpaid balance of the purchase price of any property or interest therein, except
any such balance that  constitutes  a trade  payable,  if and to the extent such
indebtedness  would  appear as a liability  upon a balance  sheet of such Person
prepared on a consolidated  basis in accordance  with GAAP, (b) all  Capitalized
Lease Obligations of such Person,  (c) all Obligations of such Person in respect
of  letters  of credit or letter of credit  reimbursement  (whether  or not such
items would appear on the balance sheet of such Person),  (d) all Obligations of
such Person in respect of interest rate protection and foreign  currency hedging
arrangements  and  (e) all  Guarantees  by  such  Person  of  items  that  would
constitute Debt under this definition (whether or not such items would appear on
such balance sheet); provided, however, that the term Debt shall not include any
Obligations  of ACC  and  its  Restricted  Subsidiaries  with  respect  to  Film
Contracts entered into in the ordinary course of business. The amount of Debt of
any Person at any date shall be, without duplication,  the principal amount that
would be shown on a balance  sheet of such  Person  prepared  as of such date in
accordance  with GAAP and the maximum  determinable  liability of any contingent
Obligations  referred  to in clause (e) above at such date.  The Debt of ACC and
its Restricted  Subsidiaries  shall not include any  Obligations of Unrestricted
Subsidiaries.

         "Debt  to  Operating  Cash  Flow  Ratio"  means,  as  of  any  date  of
determination,   the  ratio  of  (a)  the  aggregate  principal  amount  of  all
outstanding  Debt of ACC and its  Restricted  Subsidiaries  as of such date on a


                                      -3-


consolidated basis, plus the aggregate liquidation preference of all outstanding
preferred  stock  of the  Restricted  Subsidiaries  of ACC as of such  date on a
consolidated  basis  (excluding any such preferred stock held by ACC or a Wholly
Owned Restricted Subsidiary of ACC), plus the aggregate  liquidation  preference
or  redemption  amount  of all  Disqualified  Stock of ACC  (excluding  any such
Disqualified  Stock held by ACC or a Wholly Owned Restricted  Subsidiary of ACC)
outstanding  as of  such  date  to (b) the  Operating  Cash  Flow of ACC and its
Restricted  Subsidiaries  on a consolidated  basis for the four most recent full
fiscal  quarters  ending  immediately  prior  to such  date for  which  internal
financial statements are available, determined on a pro forma basis after giving
effect  to all  acquisitions  or  dispositions  of  assets  made  by ACC and its
Restricted  Subsidiaries  from the beginning of such four quarter period through
such date of determination as if such acquisition or disposition had occurred at
the beginning of such four-quarter period.

         "Default"  means any event that is, or with the  passing of time or the
giving of notice or both would be, an Event of Default.

         "Definitive Notes" means Notes, that are issued under this Indenture as
amended or  supplemented  from time to time,  in the form of the Notes  attached
hereto  as  Exhibit  A,  which do not  include  the  information  called  for by
footnotes 1 and 2 thereof.

         "Depository"  means,  with  respect to the Notes  issuable or issued in
whole or in part in global form, the Person  specified in Section 2.03 hereof as
the  Depository  with  respect to the Notes,  until a successor  shall have been
appointed and become such pursuant to the applicable provision of this Indenture
and, thereafter, "Depository" shall mean or include such successor.

         "Disqualified Stock" means any Capital Stock which, by its terms (or by
the  terms of any  security  into  which it is  convertible  or for  which it is
exchangeable at the option of the holder thereof),  or upon the happening of any
event,  matures  or  is  mandatorily  redeemable,  pursuant  to a  sinking  fund
obligation or otherwise,  or redeemable at the option of the holder thereof,  in
whole or in part,  on or prior to the earlier of the maturity  date of the Notes
or the date on which no Notes remain outstanding.

         "8.875% Indenture" means the indenture governing the 8.875% Notes.

         "8.875% Notes" means the $150.0 million in aggregate  principal  amount
of 8.875% Senior  Subordinated  Notes due February 1, 2008 of ACC outstanding on
the date of this Indenture.

         "Equity  Interests"  means Capital  Stock and all warrants,  options or
other rights to acquire  Capital Stock (but  excluding any debt security that is
convertible into or exchangeable for Capital Stock).

         "Exchange Act" means the Securities Exchange Act of 1934, as amended.

         "Exchange  Offer"  means the offer that may be made by ACC  pursuant to
the Registration Rights Agreement to issue Series B Notes in exchange for Series
A Notes.

         "fair market value" means,  with respect to any asset or property,  the
sale value that would be  obtained  in an  arm's-length  transaction  between an
informed  and willing  seller  under no  compulsion  to sell and an informed and
willing buyer under no compulsion to buy.

         "FCC" means the Federal Communications Commission.

         "Film  Contracts"  means contracts with suppliers that convey the right
to broadcast specified films, video-tape motion pictures,  syndicated television
programs or sports or other programming.


                                      -4-


         "GAAP" means, as of any date, generally accepted accounting  principles
in the United States and not including any  interpretations  or regulations that
have been proposed but that have not become effective.

         "Global Notes" means the U.S. Global Note and the Offshore Global Note,
each such term as defined in Section 2.01.

         "Government  Securities"  means direct  obligations  of, or obligations
guaranteed  by,  the  United  States  for the  payment  of  which  guarantee  or
obligations the full faith and credit of the United States is pledged.

         "Guarantee"  means a guarantee (other than by endorsement of negotiable
instruments  for  collection  in the  ordinary  course of  business),  direct or
indirect,  in any manner (including,  without limitation,  letters of credit and
reimbursement agreements in respect thereof), of all or any part of any Debt.

         "Holder" means a Person in whose name a Note is registered.

         "Indenture" means this Indenture, as amended,  modified or supplemented
from time to time.

         "Issuance Date" means December 20, 2002.

         "Investments"  of any Person means,  all  investments by such Person in
other  Persons   (including   Affiliates)  in  the  forms  of  loans  (including
Guarantees), advances or capital contributions (excluding commission, travel and
similar  advances to  officers  and  employees  made in the  ordinary  course of
business),  purchases or other  acquisitions for consideration of Debt,  Capital
Stock or other securities and all other items that are or would be classified as
investments on a balance sheet prepared in accordance with GAAP.

         "Legal  Holiday"  means a Saturday,  a Sunday or a day on which banking
institutions  in the City of New York or at a place of payment are authorized by
law,  regulation  or executive  order to remain  closed.  If a payment date is a
Legal  Holiday at a place of  payment,  payment may be made at that place on the
next  succeeding day that is not a Legal  Holiday,  and no interest shall accrue
for the intervening period.

         "Lien" means any lien, security interest,  charge or encumbrance of any
kind (including any conditional  sale or other title  retention  agreement,  any
lease in the nature thereof and any agreement to give a security interest).

         "Majority  Owned  Subsidiary"  means a  Restricted  Subsidiary  (a) the
majority of the Equity Interests of which are owned, directly or indirectly,  by
ACC and (b) the  remainder of the Equity  Interests of which are owned by an RLA
Trust.

         "Net Cash Proceeds" means the aggregate proceeds in the form of cash or
Cash  Equivalents  received  by ACC or any  of its  Restricted  Subsidiaries  in
respect of any Asset Sale,  including all cash or Cash Equivalents received upon
any sale,  liquidation or other exchange of Permitted Asset Sale  Consideration,
net of the  direct  costs  relating  to  such  Asset  Sale  (including,  without
limitation,   legal,   accounting  and   investment   banking  fees,  and  sales
commissions)  and any relocation  expenses  incurred as a result thereof,  taxes
paid or payable as a result thereof (after taking into account any available tax
credits or deductions and any tax sharing arrangements),  amounts required to be
applied to the  repayment  of Debt secured by a Lien on the asset or assets that
were the subject of such Asset Sale and any reserve for adjustment in respect of
the sale price of such asset or assets.

         "9 3/4% Debentures" means the $275.0 million in the aggregate principal
amount of 9 3/4% Senior  Subordinated  Debentures  due  November 30, 2007 of ACC
outstanding on the date of this Indenture.

                                      -5-


         "9 3/4% Indenture" means the indenture governing the 9 3/4% Debentures.

         "Note  Custodian"  means the Trustee,  as custodian for the  Depository
with respect to the Global Notes, or any successor entity thereto.

         "Obligations" means any principal,  premium, interest, penalties, fees,
indemnifications,  reimbursements,  damages and other liabilities  payable under
the documentation governing any Debt.

         "Officer" means, with respect to any Person, the Chairman of the Board,
the Chief Executive Officer,  the President,  the Chief Operating  Officer,  the
Chief Financial Officer, the Treasurer, any Assistant Treasurer, the Controller,
the Secretary or any Vice-President of such Person.

         "Officers'  Certificate" means a certificate signed on behalf of ACC by
two Officers of ACC, one of whom must be the principal  executive  officer,  the
principal financial officer,  the treasurer or the principal  accounting officer
of ACC, that meets the requirements of Section 12.05 hereof.

         "Operating  Cash Flow" means,  with  respect to ACC and its  Restricted
Subsidiaries  for  any  period,  the  Consolidated  Net  Income  of ACC  and its
Restricted  Subsidiaries for such period,  plus (a) extraordinary net losses and
net losses on sales of assets outside of the ordinary  course of business to the
extent that such losses were deducted in computing Consolidated Net Income, plus
(b) provision for taxes based on income or profits, to the extent such provision
for taxes was  included in  computing  such  Consolidated  Net  Income,  and any
provision  for taxes  utilized  in  computing  the net losses  under  clause (a)
hereof,  plus (c) Total Interest Expense of ACC and its Restricted  Subsidiaries
for such period,  plus (d)  depreciation,  amortization  and all other  non-cash
charges,  to the  extent  such  depreciation,  amortization  and other  non-cash
charges  were  deducted in computing  such  Consolidated  Net Income  (including
amortization of goodwill and other intangibles).  Notwithstanding the foregoing,
in the case of (a)  extraordinary  net  losses and net losses on sales of assets
outside of the ordinary  course of business,  (b)  provisions for taxes based on
income or profits, (c) Total Interest Expense and (d) depreciation, amortization
and other non-cash charges, in each case, of Restricted Subsidiaries of ACC that
are not Wholly Owned  Restricted  Subsidiaries of ACC, only such portion of such
items as corresponds  to the percentage of the common equity of such  Restricted
Subsidiary that is owned,  directly or indirectly,  by ACC shall be added to the
Consolidated  Net Income of ACC and its Restricted  Subsidiaries  in determining
Operating Cash Flow of ACC and its Restricted Subsidiaries.

         "Opinion  of  Counsel"  means an  opinion  from  legal  counsel  who is
reasonably  acceptable  to the Trustee  that meets the  requirements  of Section
12.05  hereof.  Such  counsel  may be an  employee  of or  counsel  to ACC,  any
Subsidiary of ACC or the Trustee.

         "Pari Passu Debt" means Debt  that ranks pari passu in right of payment
with the Notes.

         "Permitted Asset Sale Consideration"  means up to an aggregate of $50.0
million in fair  market  value of  marketable,  publicly  traded  equity or debt
securities  (other than Cash  Equivalents)  received  by ACC and its  Restricted
Subsidiaries  in connection with all Asset Sales effected since the date of this
Indenture. The fair market value of any Permitted Asset Sale Consideration shall
be determined by ACC's Board of Directors and shall cease to be counted  towards
the aggregate  limitations referred to above to the extent such consideration is
reduced to cash or Cash Equivalents. In no event shall the amount of outstanding
Permitted  Asset Sale  Consideration  be reduced by the value of any security or
other  instrument  that has  been  written  off by ACC or any of its  Restricted
Subsidiaries.

         "Permitted  Asset Swap" means a  disposition  by ACC or any  Restricted
Subsidiary of the broadcast  operations of a television station (excluding WJLA)
for like kind broadcast  assets (or a controlling  interest in the

                                      -6-


Capital Stock of a Person owning like kind broadcast assets);  provided that (i)
ACC's Board of Directors  shall have approved such  disposition and exchange and
determined  the fair market value of the assets  subject to such  transaction as
evidenced by a board  resolution  set forth in an Officers'  Certificate or such
fair market  value has been  determined  by a written  opinion of an  investment
banking firm of national  standing or other recognized  independent  expert with
experience  appraising  the  terms  and  conditions  of the type of  transaction
contemplated  thereby and (ii) after giving pro forma  effect  thereto as if the
same had occurred at the beginning of the applicable  four-quarter  period,  ACC
would be permitted to incur $1.00 of additional Debt (other than Permitted Debt)
under Section 4.09 hereof.

         "Permitted Investments" means (a) any Investments in ACC or in a Wholly
Owned Restricted  Subsidiary or a Majority Owned Subsidiary,  (b) loans up to an
aggregate of $1.5 million  outstanding at any one time to employees  pursuant to
benefits  available to the employees of ACC or any  Restricted  Subsidiary  from
time to time in the ordinary  course of  business,  (c) any  Investments  in the
Notes,  (d) any Investments in Cash  Equivalents,  (e) Investments by ACC or any
Restricted  Subsidiary in a Person,  if as a result of such  Investment (i) such
Person  becomes  a  Wholly  Owned  Restricted  Subsidiary  or a  Majority  Owned
Subsidiary,  or (ii) such Person is merged,  consolidated or amalgamated with or
into,  or  transfers  or  conveys  substantially  all of its  assets  to,  or is
liquidated into, ACC or a Wholly Owned Restricted Subsidiary or a Majority Owned
Subsidiary,  (f) any Investment the sole  consideration  for the  acquisition of
which is ACC Common  Stock,  (g) any  Investments  in a Wholly Owned  Restricted
Subsidiary  or a  Majority  Owned  Subsidiary  engaged  in a  Broadcast  Related
Business; provided that at the time of and after giving pro forma effect to such
Investment  as if the same  had  occurred  at the  beginning  of the  applicable
four-quarter  period,  ACC would be permitted to incur $1.00 of additional  Debt
(other than Permitted Debt) under Section 4.09 hereof and (h) other  Investments
that do not  exceed  $10.0  million  in the  aggregate  at any time  outstanding
(measured as of the date made, and without  giving effect to subsequent  changes
in value).

         "Permitted Liens" means (a) Liens securing any Senior Debt permitted to
be  incurred  under  this  Indenture,  (b)  Liens in favor of ACC,  (c) Liens on
property of a Person  existing at the time such Person is merged or consolidated
with ACC or any  Restricted  Subsidiary,  (d) Liens on property  existing at the
time of acquisition  thereof by ACC or any Restricted  Subsidiary,  (e) purchase
money  Liens  incurred  to  secure  all or any  part of the  purchase  price  of
property,  which  Liens  shall not  cover any  property  other  than that  being
acquired,  purchased,  improved  or  constructed,  and shall not cover  property
purchased,  acquired,  constructed  or  improved  more than one year  before the
creation  of such  Lien,  (f)  Liens to  secure  the  performance  of  statutory
obligations, surety or appeal bonds, performance bonds or other obligations of a
like nature incurred in the ordinary  course of business,  (g) Liens existing on
the date of this  Indenture,  (h) Liens for taxes,  assessments or  governmental
charges or claims that are not yet  delinquent  or that are being  contested  in
good  faith  by  appropriate  proceedings  promptly  instituted  and  diligently
conducted;  provided that any reserve or other appropriate provision as shall be
required  in  conformity  with GAAP  shall  have been made  therefor,  (i) Liens
incidental  to the conduct of the business of ACC or any  Restricted  Subsidiary
that are not incurred in connection with the borrowing of money or the obtaining
of  advances  or credit  (other  than  trade  credit in the  ordinary  course of
business) and do not in the aggregate  materially  detract from the value of the
property or  materially  impair the use thereof in the  operation of business by
ACC or such  Restricted  Subsidiary  and (j)  Liens  to  secure  any  extension,
renewal,   refinancing  or  refunding  (or  successive   extensions,   renewals,
refinancings  or  refundings),  in whole or in part,  of any Debt secured by any
Liens referred to in the foregoing clauses (a) through (i) above;  provided that
in the case of clauses  (c),  (d),  (e) and (g),  such Lien is limited to all or
part of the  specific  property  securing the  original  Lien and the  principal
amount of such Debt is not increased except as permitted under the provisions of
this Indenture.

         "Perpetual" means Perpetual Corporation, a Delaware corporation.

         "Person" means any individual, corporation, partnership, joint venture,
association,    joint-stock   company,   limited   liability   company,   trust,
unincorporated  organization  or government  or agency or political


                                      -7-


subdivision  thereof  (including any subdivision or ongoing business of any such
entity or  substantially  all of the assets of any such entity,  subdivision  or
business).

         "Principals" means (a) Joe L. Allbritton, (b) all other Persons to whom
Joe L.  Allbritton  is related by blood,  adoption or  marriage,  (c) all trusts
solely for the benefit of one or more of the Persons  described in the foregoing
clauses (a) and (b), (d) all charitable  trusts or  not-for-profit  corporations
formed by Joe L.  Allbritton  under and  described  in Section  501(c)(3) of the
Internal  Revenue Code of 1986,  as amended,  and (e) all other Persons of which
Persons described in the foregoing clauses (a) through (d) collectively own more
than 50% of the voting stock,  partnership  interests,  membership  interests or
other voting equity interests.

         "Refinancing"  means  collectively  the  following   transactions  that
occurred in 1992: (i) the prepayment of $100,000,000 of Secured Promissory Notes
due January  11,  2005 (the  "Secured  Promissory  Notes")  the  lowering of the
interest  rate  on  the  $70,000,000  of  Secured   Promissory  Notes  remaining
outstanding,  (iii) the return of  $11,490,000 of advances by Perpetual and (iv)
the  issuance of  $123,000,000  principal  amount of 11.5%  Senior  Subordinated
Debentures due August 15, 2004.

         "Registration   Rights   Agreement"  means  the   Registration   Rights
Agreement, dated as of December 20, 2002, by and among ACC and the other parties
named on the signature pages thereto, as such agreement may be amended, modified
or supplemented from time to time.

         "Responsible Officer," when used with respect to the Trustee, means any
officer within the Corporate Trust Administration  department of the Trustee (or
any  successor  group  of the  Trustee)  or any  other  officer  of the  Trustee
customarily  performing functions similar to those performed by any of the above
designated  officers,  and also means,  with respect to a  particular  corporate
trust matter,  any other officer to whom such matter is referred  because of his
knowledge of, and familiarity with, the particular subject.

         "Restricted  Investment"  means any  Investment  other than a Permitted
Investment.

         "Restricted  Subsidiary"  means  a  Subsidiary  of ACC  other  than  an
Unrestricted Subsidiary.

         "Riggs Bank N.A." means The Riggs Bank N.A.

         "RLA Trust" means either of the Robert Lewis  Allbritton  1984 Trust or
the RLA Revocable  Trust, in each case for the benefit of Robert L.  Allbritton,
or any other  trust for the  benefit of Robert L.  Allbritton,  Chairman  of the
Board and Chief Executive Officer of ACC.

         "SEC" means the Securities and Exchange Commission.

         "Securities Act" means the Securities Act of 1933, as amended.

         "Senior  Credit  Facility"  means the senior secured  revolving  credit
facility dated as of March 27, 2001,  among ACC, the  Subsidiaries  of ACC party
thereto,  the financing  institutions  party  thereto,  Fleet  National Bank, as
agent, and Deutsche Bank Securities  Inc., as documentation  agent, as restated,
amended, refinanced, supplemented or otherwise modified or replaced from time to
time.

         "Subsidiary"  of any  Person  means a  corporation,  limited  liability
company or other  entity a majority of whose  Capital  Stock with voting  power,
under ordinary  circumstances,  entitling holders of such Capital Stock to elect
the Board of  Directors or other  governing  body,  is at the time,  directly or
indirectly,  owned by such Person  and/or a Subsidiary or  Subsidiaries  of such
Person.


                                      -8-


         "Tax  Sharing  Agreement"  means that  certain  Tax  Sharing  Agreement
effective as of September 30, 1991 by and among  Perpetual,  ACC and ALLNEWSCO.,
Inc., as amended through the date hereof.

         "TIA"  means  the  Trust  Indenture  Act  of  1939  (15  U.S.C.  ss.ss.
77aaa-77bbbb),  as in effect on the date on which this  Indenture  is  qualified
under the TIA.

         "Total Interest  Expense" means,  for any period,  the interest expense
(net of interest income) of ACC and its Restricted Subsidiaries for such period,
determined  on a  consolidated  basis in accordance  with GAAP,  whether paid or
accrued,  to the extent such expense was deducted in computing  Consolidated Net
Income  (including  amortization of original issue discount,  non-cash  interest
payments  and  the  interest   component  of  capital   leases,   but  excluding
amortization  of debt issuance costs and  exchangeable  preferred stock issuance
costs).

         "Transfer  Restricted  Securities"  means  securities  that bear or are
required to bear the legend set forth in Section 2.06 hereof.

         "Treasury  Rate" means the yield to maturity at the time of computation
of United States Treasury  securities with a constant  maturity (as compiled and
published in the most recent Federal Reserve Statistical Release H.15(519) which
has become publicly available at least two Business Days prior to the date fixed
for  repayment  (or, if such  Statistical  Release is no longer  published,  any
publicly available source of similar market data)) most nearly equal to the then
remaining  term to  December  15,  2007;  provided,  however,  that if the  then
remaining  term to December 15, 2007 is not equal to the constant  maturity of a
United States Treasury  security for which a weekly average yield is given,  the
Treasury  Rate shall be  obtained  by linear  interpolation  (calculated  to the
nearest  one-twelfth  of a year) from the weekly average yields of United States
Treasury  securities  for which such  yields are given,  except that if the then
remaining  term to December 15, 2007 is less than one year,  the weekly  average
yield on  actually  traded  United  States  Treasury  securities  adjusted  to a
constant maturity of one year shall be used.

         "Trustee"  means  the  party  named  as such  above  until a  successor
replaces it in accordance  with the applicable  provisions of this Indenture and
thereafter means the successor serving hereunder.

         "Unrestricted  Subsidiary"  means (a) any Subsidiary of ACC that at the
time of determination  shall have been designated an Unrestricted  Subsidiary by
ACC's  Board of  Directors,  as provided  below,  and (b) any  Subsidiary  of an
Unrestricted  Subsidiary.  ACC's Board of Directors may designate any Subsidiary
of ACC  (including  any newly  acquired  or newly  formed  Subsidiary)  to be an
Unrestricted  Subsidiary;  provided that (x) the  Subsidiary to be so designated
(i) has total assets with a fair market value at the time of such designation of
$1,000  or  less  or  (ii)  is  being  so  designated  simultaneously  with  the
acquisition  by ACC of  such  Subsidiary  by  merger  or  consolidation  with an
Unrestricted  Subsidiary  and  (y)  immediately  after  giving  effect  to  such
designation,  no  Default  or  Event  of  Default  shall  have  occurred  and be
continuing.  ACC's Board of Directors may designate any Unrestricted  Subsidiary
to be a Restricted Subsidiary;  provided that immediately after giving effect to
such  designation,  no Default or Event of Default  shall have  occurred  and be
continuing,  including, without limitation, under Sections 4.09 and 4.12 of this
Indenture, assuming the incurrence by ACC and its Restricted Subsidiaries at the
time of such  designation  of all  existing  Debt and Liens of the  Unrestricted
Subsidiary to be so designated as a Restricted Subsidiary.  Any such designation
by ACC's Board of Directors shall be evidenced to the Trustee by filing with the
Trustee a certified  copy of the  resolution of ACC's Board of Directors  giving
effect to such  designation  and an Officers'  Certificate  certifying that such
designation  complied  with  the  foregoing   conditions.   Notwithstanding  the
foregoing or any other provision of this Indenture to the contrary, no assets of
the  broadcasting  operations known as of the date of this Indenture as WJLA-TV,
KATV,  KTUL, WSET, WCIV, WHTM, WCFT, WJSU and WBMA-LP may be held at any time by
Unrestricted  Subsidiaries,   other  than  assets  transferred  to  Unrestricted
Subsidiaries  in the ordinary  course of business  that in the aggregate are not
material to such broadcasting operations.

                                      -9-


         "Weighted  Average Life to Stated  Maturity"  means,  as of the date of
determination  with respect to any Debt,  the quotient  obtained by dividing (i)
the  sum  of the  products  of  (a)  the  number  of  years  from  the  date  of
determination  to the  date or  dates  of each  successive  scheduled  principal
payment of such Debt multiplied by (b) the amount of each such principal payment
by (ii) the sum of all such principal payments.

         "Wholly Owned Restricted  Subsidiary"  means any Restricted  Subsidiary
all of the  outstanding  shares of voting stock of which are owned,  directly or
indirectly, by ACC.

Section 1.02.     Other Definitions.
                  -----------------

                                                                       Defined
         Term                                                         in Section
         ----                                                         ----------
         "Affiliate Transaction"...................................      4.11
         "Asset Sale Offer"........................................      3.10
         "Change of Control Offer".................................      4.15
         "Change of Control Payment"...............................      4.15
         "Change of Control Payment Date"..........................      4.15
         "Covenant Defeasance".....................................      8.03
         "Custodian"...............................................      6.01
         "Designated Senior Debt"..................................     11.02
         "Event of Default"........................................      6.01
         "Excess Proceeds".........................................      4.10
         "incur"...................................................      4.09
         "Legal Defeasance"........................................      8.02
         "Offer Amount"............................................      3.10
         "Offer Period"............................................      3.10
         "Offshore Global Note"....................................      2.01
         "Paying Agent"............................................      2.03
         "Payment Blockage Notice".................................     11.04
         "Permitted Debt"..........................................      4.09
         "Purchase Date"...........................................      3.10
         "Registrar"...............................................      2.03
         "Representative"..........................................     11.02
         "Restricted Payments".....................................      4.07
         "Senior Bank Debt"........................................     11.02
         "Senior Debt".............................................     11.02
         "U.S. Global Note.........................................      2.01


Section 1.03.     Incorporation by Reference of Trust Indenture Act.
                  -------------------------------------------------

         Whenever this Indenture refers to a provision of the TIA, the provision
is incorporated by reference in and made a part of this Indenture.

         The  following  TIA terms  used in this  Indenture  have the  following
meanings:

         "indenture securities" means the Notes;

         "indenture security Holder" means a Holder of a Note;


                                      -10-


         "indenture to be qualified" means this Indenture;

         "indenture trustee" or "institutional trustee" means the Trustee;

         "obligor" on  the Notes  means ACC and any  successor obligor  upon the
Notes.

         All other  terms used in this  Indenture  that are  defined by the TIA,
defined by TIA reference to another statute or defined by SEC rule under the TIA
have the meanings so assigned to them.

Section 1.04.     Rules of Construction.
                  ---------------------

         Unless the context otherwise requires:

                  (1) a term has the meaning assigned to it;

                  (2) an accounting  term not otherwise  defined has the meaning
         assigned to it in accordance with GAAP; provided that,  notwithstanding
         anything to the contrary herein,  gains and losses  associated with the
         early  extinguishment  of debt shall be determined  in accordance  with
         GAAP prior to the effectiveness of SFAS No. 145;

                  (3) "or" is not exclusive;

                  (4)  words in the  singular  include  the  plural,  and in the
         plural include the singular;

                  (5) provisions  apply to successive  events and  transactions;
         and

                  (6)  references  to sections of or rules under the  Securities
         Act shall be deemed to include  substitute,  replacement  or  successor
         sections or rules adopted by the SEC from time to time.

                                    ARTICLE 2

                                    THE NOTES

Section 2.01.     Form and Dating.
                  ---------------

         The Notes and the  Trustee's  certificate  of  authentication  shall be
substantially  in the  form  of  Exhibit  A  hereto,  the  terms  of  which  are
incorporated in and made part of this  Indenture.  The Notes may have notations,
legends or  endorsements  required by law, stock  exchange  rule,  agreements to
which  ACC is  subject  or  usage.  Each  Note  shall be  dated  the date of its
authentication.  The Notes shall be issued  initially in denominations of $1,000
and integral multiples thereof.

         Notes  offered and sold in  reliance on Rule 144A under the  Securities
Act shall be issued  initially in the form of a single permanent global Note, in
definitive, fully registered form without interest coupons, substantially in the
form set forth in Exhibit A attached  hereto,  including the text referred to in
footnote 1 and the  additional  schedule  referred to in footnote 2 thereto (the
"U.S. Global Note"). Notes offered and sold in offshore transactions in reliance
on Regulation S under the Securities  Act shall be issued  initially in the form
of a single permanent global Note, in definitive,  fully registered form without
interest  coupons,  substantially  in the form set forth in  Exhibit A  attached
hereto, including the text referred to in footnote 1 and the additional schedule
referred  to in  footnote  2 thereto  (the  "Offshore  Global  Note").  Notes in
definitive form to be issued in exchange for Global Notes shall be substantially
in the form of  Exhibit  A  attached  hereto  (but  without  including  the text


                                      -11-


referred to in footnote 1 and the additional  schedule referred to in footnote 2
thereto).  Each Global Note shall  represent  such of the  outstanding  Notes as
shall be specified  therein and each shall  provide that it shall  represent the
aggregate  amount of  outstanding  Notes from time to time endorsed  thereon and
that the aggregate amount of outstanding Notes represented thereby may from time
to time be reduced or  increased,  as  appropriate,  to  reflect  exchanges  and
redemptions.  Any  endorsement  of a Global  Note to  reflect  the amount of any
increase or  decrease in the amount of  outstanding  Notes  represented  thereby
shall be made by the  Trustee or the Note  Custodian,  at the  direction  of the
Trustee, in accordance with instructions given by the Holder thereof as required
by Section 2.06 hereof.

Section 2.02.     Execution and Authentication.
                  ----------------------------

         Two  Officers  shall  sign the Notes  for ACC by  manual  or  facsimile
signature.  ACC's seal shall be  reproduced on the Notes and may be in facsimile
form.

         If an Officer whose  signature is on a Note no longer holds that office
at the time a Note is authenticated, the Note shall nevertheless be valid.

         A Note shall not be valid until  authenticated  by the manual signature
of the Trustee.  The signature  shall be  conclusive  evidence that the Note has
been authenticated under this Indenture.  The form of the Trustee's  certificate
of  authentication  to be borne by the Notes shall be substantially as set forth
in Exhibit A attached hereto.

         The Trustee shall,  upon a written order of ACC signed by two Officers,
authenticate  (i) Series A Notes for original  issue on the Issuance Date in the
aggregate  principal  amount  not to exceed  $275,000,000  and (ii)  subject  to
Section 4.09, Additional Notes which may be issued from time to time pursuant to
Section 2.14.  The Trustee,  upon written order of ACC signed by two Officers of
ACC,  together with the other  documents  required by Sections  12.04 and 12.05,
shall  authenticate  Series B Notes;  provided that such Series B Notes shall be
issuable only upon the valid  surrender for  cancellation of Series A Notes of a
like  aggregate  principal  amount in accordance  with the Exchange  Offer or an
exchange offer specified in any registration  rights  agreement  relating to the
Additional Notes. Such written order of ACC shall specify the amount of Notes to
be  authenticated  and the date on which  the  original  issue of Notes is to be
authenticated  and, in the case of Additional  Notes issued  pursuant to Section
2.14,  such written  order shall  certify that such  issuance is not  prohibited
under Section 4.09 of this Indenture.  Any Additional Notes shall be part of the
same issue as the Notes being issued on the  Issuance  Date and will vote on all
matters  as one  class  with  the  Notes  being  issued  on the  Issuance  Date,
including,  without  limitation,  waivers,  amendments,  redemptions,  Change of
Control Offers and Asset Sale Offers. For the purposes of this Indenture, except
for Section 4.09, references to the Notes include Additional Notes, if any.

         The Trustee may appoint an  authenticating  agent  acceptable to ACC to
authenticate  Notes.  Unless  limited  by the  terms  of  such  appointment,  an
authenticating agent may authenticate Notes whenever the Trustee may do so. Each
reference  in  this  Indenture  to   authentication   by  the  Trustee  includes
authentication by such agent. An authenticating  agent has the same rights as an
Agent to deal with ACC or an Affiliate of ACC.

Section 2.03.     Registrar and Paying Agent.
                  --------------------------

         ACC shall maintain (i) an office or agency where Notes may be presented
for registration of transfer or for exchange ("Registrar") and (ii) an office or
agency where Notes may be presented for payment ("Paying Agent").  The Registrar
shall keep a register of the Notes and of their  transfer and exchange.  ACC may
appoint one or more  co-registrars and one or more additional paying agents. The
term "Registrar"  includes any co-registrar and the term "Paying Agent" includes
any  additional  paying  agent.  ACC may change any Paying  Agent,  Registrar or
co-registrar without prior notice to any Holder. ACC shall notify the Trustee in
writing and


                                      -12-


the Trustee  shall notify the Holders of the name and address of any Agent not a
party to this Indenture.  If ACC fails to appoint or maintain  another entity as
Registrar  or Paying  Agent,  the Trustee  shall act as such.  ACC or any of its
Restricted Subsidiaries may act as Paying Agent, Registrar or co-registrar.  ACC
shall enter into an appropriate  agency  agreement with any Agent not a party to
this  Indenture,  which  shall  incorporate  the  provisions  of the  TIA.  Such
agreement  shall  implement the provisions of this Indenture that relate to such
Agent.  ACC shall  notify the Trustee of the name and address of any such Agent.
If ACC fails to  maintain  a  Registrar  or Paying  Agent,  or fails to give the
foregoing  notice,  the  Trustee  shall act as such,  and shall be  entitled  to
appropriate compensation in accordance with Section 7.07 hereof.

         ACC initially  appoints The Depository  Trust Company ("DTC") to act as
Depository with respect to the Global Notes.

         ACC  initially  appoints the Trustee to act as the Registrar and Paying
Agent and the Trustee shall  initially act as Note Custodian with respect to the
Global Notes.

Section 2.04.     Paying Agent To Hold Money in Trust.
                  -----------------------------------

         ACC shall  require each Paying Agent other than the Trustee to agree in
writing  that the Paying Agent will hold in trust for the benefit of the Holders
or the Trustee all money held by the Paying  Agent for the payment of  principal
of, premium,  if any, and interest on the Notes,  and will notify the Trustee of
any Default by ACC in making any such payment. While any such Default continues,
the  Trustee  may  require  a Paying  Agent to pay all  money  held by it to the
Trustee.  ACC at any time may require a Paying Agent to pay all money held by it
to the Trustee.  Upon  payment  over to the Trustee,  the Paying Agent (if other
than ACC or a Restricted  Subsidiary)  shall have no further  liability  for the
money delivered to the Trustee. If ACC or a Restricted Subsidiary acts as Paying
Agent,  it shall  segregate and hold in a separate trust fund for the benefit of
the  Holders  all  money  held by it as Paying  Agent.  Upon any  bankruptcy  or
reorganization  proceedings  relating to ACC, the Trustee  shall serve as Paying
Agent.

Section 2.05.     Holder Lists.
                  ------------

         The  Trustee  shall  preserve  in as  current  a form as is  reasonably
practicable  the most recent list  available to it of the names and addresses of
all Holders and shall  otherwise  comply with TIA ss. 312(a).  If the Trustee is
not the Registrar, ACC shall furnish to the Trustee at least seven Business Days
before  each  interest  payment  date and at such other times as the Trustee may
request in  writing,  a list in such form and as of such date as the Trustee may
reasonably  require of the names and  addresses  of the Holders,  including  the
aggregate  principal  amount  of  Notes  held by  each  thereof,  and ACC  shall
otherwise comply with TIA ss. 312(a).

Section 2.06.     Transfer and Exchange.
                  ---------------------

         (a)      Transfer and Exchange of  Definitive  Notes.  When  Definitive
Notes  are  presented  by  a  Holder  to  the  Registrar  or a co-registrar with
a request:

         (x)      to register the transfer of the Definitive Notes; or

         (y)      to  exchange  such  Definitive  Notes  for an equal  principal
                  amount of Definitive Notes of other authorized denominations,

the Registrar  shall  register the transfer or make the exchange as requested if
its requirements  for such  transactions are met;  provided,  however,  that the
Definitive Notes presented or surrendered for register of transfer or exchange:


                                      -13-


                  (i)  shall  be  duly  endorsed  or  accompanied  by a  written
         instruction  of transfer in form  satisfactory  to the  Registrar  duly
         executed by such Holder or by his attorney, duly authorized in writing;
         and

                 (ii)  in the  case of a  Definitive  Note  that  is a  Transfer
         Restricted Security, such request shall be accompanied by the following
         additional information and documents, as applicable:

                           (A) if such  Transfer  Restricted  Security  is being
                  delivered to the Registrar by a Holder for registration in the
                  name of such Holder, without transfer, a certification to that
                  effect from such Holder (in  substantially the form of Exhibit
                  B attached hereto); or

                           (B) if such  Transfer  Restricted  Security  is being
                  transferred to a "qualified  institutional  buyer" (as defined
                  in Rule 144A under the Securities Act) in accordance with Rule
                  144A under the Securities Act or pursuant to an exemption from
                  registration in accordance with Rule 144 or Rule 904 under the
                  Securities  Act  or  pursuant  to  an  effective  registration
                  statement under the Securities  Act, a  certification  to that
                  effect from such Holder (in  substantially the form of Exhibit
                  B attached hereto); or

                           (C) if such  Transfer  Restricted  Security  is being
                  transferred   in  reliance  on  another   exemption  from  the
                  registration requirements of the Securities Act, a certificate
                  to that effect from such Holder (in  substantially the form of
                  Exhibit B attached hereto) and an Opinion of Counsel from such
                  Holder or the transferee  reasonably  acceptable to ACC and to
                  the   Registrar  to  the  effect  that  such  transfer  is  in
                  compliance with the Securities Act.

         (b) Transfer of a Definitive Note for a Beneficial Interest in a Global
Note. A  Definitive  Note may not be  exchanged  for a beneficial  interest in a
Global Note except upon  satisfaction of the requirements set forth below.  Upon
receipt by the Trustee of a Definitive  Note,  duly endorsed or  accompanied  by
appropriate  instruments  of  transfer,  in form  satisfactory  to the  Trustee,
together with:

                  (i) if such Definitive Note is a Transfer Restricted Security,
         a certification  from the Holder thereof (in  substantially the form of
         Exhibit B hereto)  to the  effect  that such  Definitive  Note is being
         transferred  by such Holder  either (x) to a  "qualified  institutional
         buyer" (as defined in Rule 144A under the Securities Act) in accordance
         with Rule 144A under the Securities Act or (y) based upon an Opinion of
         Counsel from such Holder or the transferee reasonably acceptable to ACC
         and  to  the  Registrar,   pursuant  to  another   exemption  from  the
         registration requirements of the Securities Act; and

                 (ii)  whether  or  not  such  Definitive  Note  is  a  Transfer
         Restricted  Security,  written  instructions  from the  Holder  thereof
         directing the Trustee to make, or to direct the Note Custodian to make,
         an  endorsement  on the  Global  Note to  reflect  an  increase  in the
         aggregate principal amount of the Notes represented by the Global Note,
         in  which  case  the  Trustee  shall  cancel  such  Definitive  Note in
         accordance  with  Section  2.11  hereof and  cause,  or direct the Note
         Custodian to cause,  in accordance with the standing  instructions  and
         procedures existing between the Depository and the Note Custodian,  the
         aggregate  principal amount of Notes  represented by the Global Note to
         be increased accordingly. If no Global Notes are then outstanding,  ACC
         shall issue and, upon receipt of an authentication  order in accordance
         with Section 2.02 hereof, the Trustee shall authenticate,  a new Global
         Note in the appropriate principal amount.

         (c) Transfer and Exchange of Global Notes. The transfer and exchange of
Global  Notes or  beneficial  interests  therein  shall be effected  through the
Depository,  in  accordance  with  this  Indenture  and  the


                                      -14-


procedures  of the  Depository  therefor,  which shall include  restrictions  on
transfer  comparable  to those set forth  herein to the extent  required  by the
Securities Act.

         (d) Transfer of a Beneficial Interest in a Global Note for a Definitive
Note.

          (i) Any Person having a beneficial  interest in a Global Note may upon
request exchange such beneficial interest for a Definitive Note. Upon receipt by
the Trustee of written  instructions  or such other form of  instructions  as is
customary for the  Depository,  from the  Depository or its nominee on behalf of
any Person having a beneficial  interest in a Global Note, and, in the case of a
Transfer Restricted Security, the following additional information and documents
(all of which may be submitted by facsimile):

                  (A) if such  beneficial  interest is being  transferred to the
         Person  designated by the Depository as being the  beneficial  owner, a
         certification  to that effect from such  Person (in  substantially  the
         form of Exhibit B attached hereto); or

                  (B) if such  beneficial  interest  is being  transferred  to a
         "qualified  institutional  buyer"  (as  defined  in Rule 144A under the
         Securities  Act) in accordance  with Rule 144A under the Securities Act
         or pursuant to an exemption from  registration  in accordance with Rule
         144 or Rule 904 under the  Securities  Act or pursuant to an  effective
         registration  statement under the Securities  Act, a  certification  to
         that effect from the transferor (in substantially the form of Exhibit B
         attached hereto); or

                  (C) if  such  beneficial  interest  is  being  transferred  in
         reliance on another exemption from the registration requirements of the
         Securities Act, a certification  to that effect from the transferor (in
         substantially  the form of Exhibit B attached hereto) and an Opinion of
         Counsel from the transferee or transferor  reasonably acceptable to ACC
         and to the  Registrar to the effect that such transfer is in compliance
         with the Securities Act;

in which  case  the  Trustee  or the Note  Custodian,  at the  direction  of the
Trustee,  shall,  in accordance  with the standing  instructions  and procedures
existing  between the  Depository  and the Note  Custodian,  cause the aggregate
principal amount of Global Notes to be reduced  accordingly and,  following such
reduction,  ACC shall  execute and, upon receipt of an  authentication  order in
accordance with Section 2.02 hereof,  the Trustee shall authenticate and deliver
to the transferee, a Definitive Note in the appropriate principal amount.

         (ii) Definitive Notes issued in exchange for a beneficial interest in a
Global Note  pursuant to this Section  2.06(d) shall be registered in such names
and in such authorized denominations as the Depository, pursuant to instructions
from its direct or  indirect  participants  or  otherwise,  shall  instruct  the
Trustee. The Trustee shall deliver such Definitive Notes to the Persons in whose
names such Notes are so registered.

         (e)   Restrictions   on  Transfer   and   Exchange  of  Global   Notes.
Notwithstanding any other provision of this Indenture (other than the provisions
set forth in  subsection  (f) of this  Section  2.06),  a Global Note may not be
transferred  as a whole except by the  Depository to a nominee of the Depository
or by a nominee of the  Depository to the  Depository or another  nominee of the
Depository or by the Depository or any such nominee to a successor Depository or
a nominee of such successor Depository.

         (f) Authentication of Definitive Notes in Absence of Depository.  If at
any time:

                  (i) the  Depository  for the Notes (x)  notifies  ACC that the
         Depository  is  unwilling or unable to continue as  Depository  for the
         Global  Notes or (y) has  ceased to be a  clearing  company  registered
         under the Exchange Act and, in each case,  a successor  Depository  for
         the Global Notes is not appointed by ACC within 90 days after  delivery
         of such notice;


                                      -15-


                 (ii) ACC,  at its sole  discretion,  notifies  the  Trustee  in
         writing that it elects to cause the issuance of Definitive  Notes under
         this Indenture; or

                (iii) a Default or Event of Default  shall have  occurred and be
         continuing  and the Registrar  has received a written  request from the
         Depository to issue Definitive Notes;

then ACC shall execute, and the Trustee shall, upon receipt of an authentication
order  in  accordance  with  Section  2.02  hereof,  authenticate  and  deliver,
Definitive Notes in an aggregate  principal amount equal to the principal amount
of the Global Notes in exchange for such Global Notes.

         (g) Legends.

          (i) Except as permitted by the following  paragraphs  (ii),  (iii) and
(iv), each Note  certificate  evidencing  Global Notes and Definitive Notes (and
all Notes  issued in  exchange  therefor  or  substitution  thereof)  shall bear
legends in substantially the following form:

                  THIS NOTE HAS NOT BEEN  REGISTERED  UNDER THE U.S.  SECURITIES
         ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"), AND,  ACCORDINGLY,  MAY
         NOT BE  OFFERED  OR SOLD  WITHIN  THE  UNITED  STATES OR TO, OR FOR THE
         ACCOUNT OR BENEFIT OF, U.S.  PERSONS EXCEPT AS SET FORTH BELOW.  BY ITS
         ACQUISITION  HEREOF,  THE  HOLDER  (1)  REPRESENTS  THAT  (A)  IT  IS A
         "QUALIFIED  INSTITUTIONAL  BUYER"  (AS  DEFINED  IN RULE 144A UNDER THE
         SECURITIES ACT), (B) IT IS NOT A U.S. PERSON AND IS ACQUIRING THIS NOTE
         IN AN  OFFSHORE  TRANSACTION  IN  COMPLIANCE  WITH  RULE 904  UNDER THE
         SECURITIES ACT OR (C) IT IS AN ACCREDITED  INVESTOR (AS DEFINED IN RULE
         501 (a)(1),  (2), (3), OR (7) UNDER THE SECURITIES ACT (AN  "ACCREDITED
         INVESTOR'),  (2) AGREES  THAT IT WILL NOT  WITHIN  TWO YEARS  AFTER THE
         ORIGINAL  ISSUANCE OF THIS NOTE RESELL OR OTHERWISE  TRANSFER THIS NOTE
         EXCEPT  (A) TO  ALLBRITTON  COMMUNICATIONS  COMPANY  OR ANY  SUBSIDIARY
         THEREOF,  (B)  INSIDE THE UNITED  STATES TO A  QUALIFIED  INSTITUTIONAL
         BUYER IN COMPLIANCE WITH RULE 144A UNDER THE SECURITIES ACT, (C) INSIDE
         THE  UNITED  STATES  TO AN  ACCREDITED  INVESTOR  THAT,  PRIOR  TO SUCH
         TRANSFER,  FURNISHES  (OR  HAS  FURNISHED  ON  ITS  BEHALF  BY  A  U.S.
         BROKER-DEALER)  TO THE  TRUSTEE  A  SIGNED  LETTER  CONTAINING  CERTAIN
         REPRESENTATIONS AND AGREEMENTS RELATING TO THE RESTRICTIONS ON TRANSFER
         OF THIS NOTE (THE FORM OF WHICH LETTER CAN BE OBTAINED FROM THE TRUSTEE
         FOR  THIS  NOTE),   (D)  OUTSIDE  THE  UNITED  STATES  IN  AN  OFFSHORE
         TRANSACTION  IN COMPLIANCE  WITH RULE 904 UNDER THE  SECURITIES ACT (IF
         AVAILABLE), (E) PURSUANT TO THE EXEMPTION FROM REGISTRATION PROVIDED BY
         RULE 144 UNDER THE  SECURITIES  ACT (IF  AVAILABLE),  (F) IN ACCORDANCE
         WITH  ANOTHER  EXEMPTION  FROM  THE  REGISTRATION  REQUIREMENTS  OF THE
         SECURITIES  ACT (AND BASED  UPON AN  OPINION  OF COUNSEL IF  ALLBRITTON
         COMMUNICATIONS  COMPANY SO  REQUESTS),  OR (G) PURSUANT TO AN EFFECTIVE
         REGISTRATION  STATEMENT UNDER THE SECURITIES ACT AND (3) AGREES THAT IT
         WILL GIVE TO EACH  PERSON TO WHOM  THIS  NOTE IS  TRANSFERRED  A NOTICE
         SUBSTANTIALLY  TO THE EFFECT OF THIS  LEGEND.  IN  CONNECTION  WITH ANY
         TRANSFER OF THIS NOTE WITHIN TWO YEARS AFTER THE  ORIGINAL  ISSUANCE OF
         THIS NOTE, IF THE PROPOSED  TRANSFEREE IS AN ACCREDITED  INVESTOR,  THE
         HOLDER  MUST,  PRIOR TO SUCH  TRANSFER,  FURNISH TO THE TRUSTEE AND THE
         COMPANY SUCH  CERTIFICATIONS,  LEGAL  OPINIONS OR OTHER  INFORMATION AS
         EITHER OF THEM MAY REASONABLY  REQUIRE TO CONFIRM THAT SUCH TRANSFER IS
         BEING MADE  PURSUANT TO AN  EXEMPTION  FROM,  OR IN A  TRANSACTION  NOT
         SUBJECT TO, THE  REGISTRATION


                                      -16-


         REQUIREMENTS OF THE SECURITIES ACT. AS USED HEREIN, THE TERMS "OFFSHORE
         TRANSACTION,"  "UNITED STATES" AND "U.S. PERSON" HAVE THE MEANING GIVEN
         TO THEM BY REGULATION S UNDER THE SECURITIES ACT.

         (ii)  Upon any  sale or  transfer  of a  Transfer  Restricted  Security
pursuant  to Rule 144 under  the  Securities  Act or  pursuant  to an  effective
registration statement under the Securities Act:

                  (A) in the case of any Transfer  Restricted Security that is a
         Definitive  Note,  the  Registrar  shall  permit the Holder  thereof to
         exchange such Transfer  Restricted  Security for a Definitive Note that
         does  not bear the  legend  set  forth in (i)  above  and  rescind  any
         restriction on the transfer of such Transfer Restricted Security; and

                  (B)  in  the  case  of  any   Transfer   Restricted   Security
         represented by a Global Note, such Transfer  Restricted  Security shall
         not be  required  to bear the legend set forth in (i) above,  but shall
         continue to be subject to the  provisions  of Section  2.06(c)  hereof;
         provided,  however, that with respect to any request for an exchange of
         a Transfer Restricted Security that is represented by a Global Note for
         a Definitive Note that does not bear the legend set forth in (i) above,
         which  request is made in reliance  upon Rule 144,  the Holder  thereof
         shall  certify in writing to the  Registrar  that such request is being
         made pursuant to Rule 144 (such  certification  to be  substantially in
         the form of Exhibit B attached hereto).

        (iii) In case of the Offshore  Global Note,  after 40 days following the
date  hereof  and  upon  receipt  by  ACC  and  the  Trustee  of  a  certificate
substantially in the form of Exhibit C hereto, the Trustee shall authenticate an
Offshore  Global Note or a Definitive  Note,  which does not bear the legend set
forth  in  (i)  above,  in  exchange  for  such  Transfer   Restricted  Security
representing the Offshore Global Note.

         (iv)  Notwithstanding the foregoing,  upon consummation of the Exchange
Offer,  ACC  shall  issue  and,  upon  receipt  of an  authentication  order  in
accordance with Section 2.02 hereof,  the Trustee shall  authenticate,  Series B
Notes in exchange  for Series A Notes  accepted  for  exchange  in the  Exchange
Offer,  which  Series B Notes  shall not bear the legend set forth in (i) above,
and the Registrar  shall rescind any  restriction on the transfer of such Notes,
in  each  case  unless  the  Holder  of such  Series  A Notes  is  either  (A) a
broker-dealer,  (B) a Person  participating  in the distribution of the Series A
Notes or (C) a Person who is an affiliate (as defined in Rule 144A) of ACC.

         (h) Cancellation and/or Adjustment of Global Notes. At such time as all
beneficial  interests in Global Notes have been exchanged for Definitive  Notes,
redeemed,  repurchased  or  cancelled,  all Global Notes shall be returned to or
retained and cancelled by the Trustee in accordance with Section 2.11 hereof. At
any time prior to such cancellation, if any beneficial interest in a Global Note
is exchanged for  Definitive  Notes,  redeemed,  repurchased  or cancelled,  the
principal  amount of Notes  represented  by such  Global  Note  shall be reduced
accordingly and an endorsement shall be made on such Global Note, by the Trustee
or the  Note  Custodian,  at the  direction  of the  Trustee,  to  reflect  such
reduction.

         (i) General Provisions Relating to Transfers and Exchanges.

          (i) To permit  registrations  of transfers  and  exchanges,  ACC shall
execute and the Trustee shall authenticate  Definitive Notes and Global Notes at
the Registrar's request.

         (ii) No service  charge shall be made to a Holder for any  registration
of transfer or  exchange,  but ACC may require  payment of a sum  sufficient  to
cover any  transfer tax or similar  governmental  charge  payable


                                      -17-


in  connection  therewith  (other  than  any  such  transfer  taxes  or  similar
governmental charge payable upon exchange or transfer pursuant to Sections 3.07,
3.10, 4.10, 4.15 and 9.05 hereof).

        (iii) The Registrar shall not be required to register the transfer of or
exchange  any Note  selected  for  redemption  in whole or in part,  except  the
unredeemed portion of any Note being redeemed in part.

         (iv) All Definitive Notes and Global Notes issued upon any registration
of transfer or exchange of  Definitive  Notes or Global Notes shall be the valid
obligations of ACC,  evidencing the same debt, and entitled to the same benefits
under this Indenture,  as the Definitive Notes or Global Notes  surrendered upon
such registration of transfer or exchange.

          (v) ACC shall not be required:

                  (A) to issue, to register the transfer of or to exchange Notes
         during a period beginning at the opening of business 15 days before the
         day of any selection of Notes for redemption  under Section 3.02 hereof
         and ending at the close of business on the day of selection; or

                  (B) to register  the  transfer  of or to exchange  any Note so
         selected  for  redemption  in whole or in part,  except the  unredeemed
         portion of any Note being redeemed in part; or

                  (C) to register  the transfer of or to exchange a Note between
         a record date and the next succeeding interest payment date.

         (vi) Prior to due presentment for the registration of a transfer of any
Note, the Trustee, any Agent and ACC may deem and treat the Person in whose name
any Note is  registered  as the  absolute  owner of such Note for the purpose of
receiving  payment of principal  of and  interest on such Note,  and neither the
Trustee, any Agent nor ACC shall be affected by notice to the contrary.

        (vii) The Trustee shall authenticate  Definitive Notes and  Global Notes
in accordance with the provisions of Section 2.02 hereof.

Section 2.07.     Replacement Notes.
                  -----------------

         If any  mutilated  Note is  surrendered  to the  Trustee or ACC and the
Trustee receives evidence to its satisfaction of the destruction,  loss or theft
of any Note,  ACC shall issue and the  Trustee,  upon the  written  order of ACC
signed by two Officers of ACC,  shall  authenticate  a  replacement  Note if the
Trustee's  requirements  for  replacements  of Notes are met. If required by the
Trustee  or ACC,  an  indemnity  bond must be  supplied  by the  Holder  that is
sufficient  in the  judgment of the Trustee and ACC to protect ACC, the Trustee,
any Agent and any authenticating agent from any loss that any of them may suffer
if a Note is  replaced.  ACC and the  Trustee  may charge for their  expenses in
replacing a Note.

         Every replacement Note is an additional  obligation of ACC and shall be
entitled to all of the benefits of this  Indenture  equally and  proportionately
with all other Notes duly issued hereunder.

Section 2.08.     Outstanding Notes.
                  -----------------

         The Notes  outstanding at any time are all the Notes  authenticated  by
the  Trustee  except  for  those  cancelled  by it,  those  delivered  to it for
cancellation,  those reductions in the interest in a Global Note effected by the
Trustee in accordance  with the provisions  hereof,  and those described in this
Section as not outstanding.


                                      -18-


         If a Note is replaced  pursuant to Section 2.07 hereof, it ceases to be
outstanding  unless  the  Trustee  receives  proof  satisfactory  to it that the
replaced Note is held by a bona fide purchaser.

         If the principal  amount of any Note is  considered  paid under Section
4.01 hereof, it ceases to be outstanding and interest on it ceases to accrue.

         Subject to Section 2.09 hereof, a Note does not cease to be outstanding
because ACC or an Affiliate of ACC holds the Note.

         If the Paying  Agent  (other than ACC, a  Subsidiary  or any  Affiliate
thereof) holds, on a redemption date or maturity date,  money  sufficient to pay
Notes  payable  on that date,  then on and after  that date such Notes  shall be
deemed to be no longer outstanding and shall cease to accrue interest.

Section 2.09.     Treasury Notes.
                  --------------

         In determining  whether the Holders of the required principal amount of
Notes have concurred in any direction,  waiver or consent, Notes owned by ACC or
by any Affiliate  thereof shall be considered as though not outstanding,  except
that for the purposes of  determining  whether the Trustee shall be protected in
relying on any such direction,  waiver or consent, only Notes that a Responsible
Officer knows to be so owned shall be so considered.

Section 2.10.     Temporary Notes.
                  ---------------

         Until Definitive Notes are ready for delivery,  ACC may prepare and the
Trustee shall authenticate temporary Notes upon a written order of ACC signed by
two  Officers  of ACC.  Temporary  Notes shall be  substantially  in the form of
Definitive  Notes  but may have  variations  that ACC and the  Trustee  consider
appropriate  for temporary  Notes and as shall be  reasonably  acceptable to the
Trustee.  Without  unreasonable  delay,  ACC shall prepare and the Trustee shall
authenticate  Definitive  Notes in  exchange  for  temporary  Notes.  Holders of
temporary Notes shall be entitled to all of the benefits of this Indenture.

Section 2.11.     Cancellation.
                  ------------

         ACC at any time may deliver Notes to the Trustee for cancellation.  The
Registrar and Paying Agent shall forward to the Trustee any Notes surrendered to
them for registration of transfer,  exchange or payment.  The Trustee and no one
else shall cancel all Notes surrendered for registration of transfer,  exchange,
payment,  replacement or cancellation and shall destroy cancelled Notes (subject
to the record  retention  requirements of the Exchange Act),  unless ACC directs
them to be returned to it. ACC may not issue new Notes to replace  Notes that it
has  redeemed  or  paid  or  that  have  been   delivered  to  the  Trustee  for
cancellation.  All  cancelled  Notes held by the Trustee  shall be destroyed and
certification  of their  destruction  delivered to ACC unless by a written order
signed by two Officers of ACC, ACC shall direct that cancelled Notes be returned
to it.

Section 2.12.     Record Date.
                  -----------

         The record date for purposes of determining  the identity of Holders of
the  Notes  entitled  to vote  or  consent  to any  action  by  vote or  consent
authorized or permitted under this Indenture shall be determined as provided for
in TIA ss. 316(c).


                                      -19-


Section 2.13.     Defaulted Interest.
                  ------------------

         If ACC defaults in a payment of interest on the Notes, it shall pay the
defaulted  interest in any lawful  manner plus, to the extent  lawful,  interest
payable  on the  defaulted  interest,  to  the  Persons  who  are  Holders  on a
subsequent special record date, which date shall be at the earliest  practicable
date but in all events at least five Business Days prior to the payment date, in
each case at the rate  provided  in the Notes and in Section  4.01  hereof.  ACC
shall notify the Trustee in writing of the amount of defaulted interest proposed
to be paid on each Note and the date of the proposed  payment.  ACC shall,  with
the consent of the Trustee,  fix or cause to be fixed each such  special  record
date and payment date. At least 15 days before the special record date, ACC (or,
upon the written  request of ACC,  the Trustee in the name and at the expense of
ACC) shall mail or cause to be mailed to the  Holders a notice  that  states the
special record date, the related payment date and the amount of such interest to
be paid.

Section 2.14.     Issuance of Additional Notes.
                  ----------------------------

         ACC shall be entitled to issue  Additional  Notes under this  Indenture
which shall have substantially identical terms as the Series A Notes, other than
with respect to the Issuance Date,  issue price,  amount of interest  payable on
the first payment date applicable  thereto (and, if such Additional  Notes shall
be issued  pursuant to a registration  statement under the Securities Act, other
than with respect to transfer  restrictions or if such Additional Notes shall be
required to be registered  under the  Securities  Act pursuant to the terms of a
registration  rights  or  similar  agreement,  such  Additional  Notes  shall be
exchangeable for and ACC shall issue and the Trustee shall authenticate Series B
Notes  substantially in the form of Exhibit A hereto, but without the legend set
forth in Section  2.06(g)(i),  to be delivered  in exchange for such  Additional
Notes); provided that any issuance is not prohibited by Section 4.09.

         With  respect  to any  Additional  Notes,  ACC  shall  set  forth  in a
resolution of its Board of Directors (or a duly appointed committee thereof) and
in an Officers'  Certificate,  a copy of each of which shall be delivered to the
Trustee, the following information:

                  (1) the aggregate principal amount of such Additional Notes to
         be authenticated and delivered pursuant to this Indenture;

                  (2) the  issue  price and the  issue  date of such  Additional
         Notes,  the  amount  of  interest  payable  on the first  payment  date
         applicable  thereto  and  the  CUSIP,  ISIN or  Common  Code  for  such
         Additional Notes;  provided that no Additional Notes may be issued at a
         price that would cause such  Additional  Notes to have "original  issue
         discount"  within the meaning of Section 1273 of the  Internal  Revenue
         Code of 1986, as amended; and

                  (3) whether such Additional Notes shall be Transfer Restricted
         Securities  and  issued  in the form of  Series A Notes as set forth in
         Exhibit A hereto,  or shall be registered  securities and issued in the
         form of Series B Notes,  but  without  the  legend set forth in Section
         2.06(g)(i).

                                    ARTICLE 3

                            REDEMPTION AND PREPAYMENT

Section 3.01.     Notices to Trustee.
                  ------------------

         If ACC  elects to redeem  Notes  pursuant  to the  optional  redemption
provisions of Section 3.07 hereof, it shall furnish to the Trustee,  at least 30
days  but  not  more  than  60 days  before  a  redemption  date,  an  Officers'


                                      -20-


Certificate  setting forth (i) the Section of this  Indenture  pursuant to which
the redemption shall occur, (ii) the redemption date, (iii) the principal amount
of Notes to be redeemed and (iv) the redemption price.

         If ACC is  required  to make an offer to redeem  Notes  pursuant to the
provisions  of Section 3.10 or 4.15 hereof,  it shall  furnish to the Trustee at
least 30 days but not more than 60 days before a redemption  date,  an Officers'
Certificate  setting forth (i) the Section of this  Indenture  pursuant to which
the  redemption  shall  occur,  (ii) the  redemption  date,  (iii)  the  maximum
principal  amount of Notes to be  redeemed,  (iv) the  redemption  price and (v)
further  setting  forth a statement to the effect that (a) the Company or one of
its  Restricted  Subsidiaries  has effected an Asset Sale and the conditions set
forth in  Section  4.10  have been  satisfied  or (b) a Change  of  Control  has
occurred and the conditions set forth in Section 4.15 have been satisfied.

Section 3.02.     Selection of Notes To Be Redeemed.
                  ---------------------------------

         If less  than all of the  Notes are to be  redeemed  at any  time,  the
Trustee  shall select the Notes to be redeemed  among the Holders in  compliance
with the requirements of the principal national securities exchange,  if any, on
which the Notes are  listed  or, if the Notes are not so  listed,  on a pro rata
basis, by lot or in accordance with any other method the Trustee  considers fair
and appropriate. In the event of partial redemption by lot, the particular Notes
to be redeemed shall be selected,  unless otherwise  provided  herein,  not less
than 30 nor more than 60 days prior to the  redemption  date by the Trustee from
the outstanding Notes not previously called for redemption. ACC shall notify the
Trustee  in  writing  of the  listing  of the Notes on any  national  securities
exchange.

         The Trustee shall promptly  notify ACC in writing of the Notes selected
for redemption and, in the case of any Note selected for partial redemption, the
principal  amount  thereof to be redeemed.  Notes and portions of them  selected
shall be in amounts of $1,000 or whole  multiples of $1,000;  except that if all
Notes of a Holder are to be  redeemed,  the entire  outstanding  amount of Notes
held by such Holder, even if not a multiple of $1,000, shall be redeemed. Except
as provided in the preceding  sentence,  provisions of this Indenture that apply
to Notes  called for  redemption  also  apply to  portions  of Notes  called for
redemption.

         In the event ACC is required to make an offer to redeem Notes  pursuant
to Sections 3.10 and 4.10 hereof and the amount of the Excess  Proceeds from the
Asset Sale are not evenly divisible by $1,000, the Trustee shall promptly refund
to the Company any remaining Excess Proceeds.

Section 3.03.     Notice of Redemption.
                  --------------------

         Subject to the provisions of Section 3.10 hereof,  at least 30 days but
not more than 60 days before a  redemption  date,  ACC shall mail or cause to be
mailed,  by first class mail, a notice of  redemption to each Holder whose Notes
are to be redeemed at its registered address.

         The notice shall identify the Notes to be redeemed and shall state:

                  (a) the redemption date;

                  (b) the redemption price;

                  (c) if any Note is being  redeemed  in part,  that,  after the
         redemption  date,  upon  surrender of such Note, a new Note or Notes in
         principal  amount equal to the unredeemed  portion shall be issued upon
         cancellation of the original Note;

                  (d) the name and address of the Paying Agent;


                                      -21-


                  (e) that Notes called for  redemption  must be  surrendered to
         the Paying Agent to collect the redemption price;

                  (f)  that,  unless  ACC  defaults  in making  such  redemption
         payment,  interest on Notes called for  redemption  ceases to accrue on
         and after the redemption date;

                  (g)  the  paragraph  of  the  Notes  and/or  Section  of  this
         Indenture  pursuant to which the Notes called for  redemption are being
         redeemed; and

                  (h) that no  representation  is made as to the  correctness or
         accuracy of the CUSIP number,  if any, listed in such notice or printed
         on the Notes.

         At ACC's  request,  the Trustee  shall give the notice of redemption in
ACC's name and at its expense; provided,  however, that ACC shall have delivered
to the  Trustee,  at least 45 days prior to the  redemption  date,  an Officers'
Certificate  requesting  that the Trustee give such notice and setting forth the
information to be stated in such notice as provided in the preceding paragraph.

Section 3.04.     Effect of Notice of Redemption.
                  ------------------------------

         Once notice of  redemption  is mailed in  accordance  with Section 3.03
hereof,  Notes called for redemption  become  irrevocably due and payable on the
redemption  date at the  redemption  price.  A notice of  redemption  may not be
conditional.

Section 3.05.     Deposit of Redemption Price.
                  ---------------------------

         One Business Day prior to the  redemption  date, ACC shall deposit with
the Trustee or with the Paying  Agent  money  sufficient  to pay the  redemption
price of and accrued  interest  on all Notes to be  redeemed  on that date.  The
Trustee or the Paying  Agent shall  promptly  return to ACC any money  deposited
with the Trustee or the Paying  Agent by ACC in excess of the amounts  necessary
to pay the  redemption  price  of,  and  accrued  interest  on,  all Notes to be
redeemed.

         If ACC complies with the provisions of the preceding paragraph,  on and
after the  redemption  date,  interest shall cease to accrue on the Notes or the
portions of Notes  called for  redemption.  If a Note is redeemed on or after an
interest record date but on or prior to the related  interest payment date, then
any accrued and unpaid  interest  shall be paid to the Person in whose name such
Note was  registered  at the close of business on such record date.  If any Note
called for redemption shall not be so paid upon surrender for redemption because
of the failure of ACC to comply with the preceding paragraph,  interest shall be
paid on the unpaid  principal from the  redemption  date until such principal is
paid  and,  to the  extent  lawful,  on any  interest  not  paid on such  unpaid
principal,  in each case at the rate  provided in the Notes and in Section  4.01
hereof.

Section 3.06.     Notes Redeemed in Part.
                  ----------------------

         Upon surrender of a Note that is redeemed in part, ACC shall issue and,
upon ACC's written request, the Trustee shall authenticate for the Holder at the
expense of ACC, a new Note equal in principal  amount to the unredeemed  portion
of the Note surrendered.

Section 3.07.     Optional Redemption.
                  -------------------

         (a)  Except as set forth in clauses  (b) and (c) below of this  Section
3.07, ACC shall not have the option to redeem the Notes pursuant to this Section
3.07 prior to December 15, 2007. Thereafter, ACC shall


                                      -22-


have the  option to redeem  the Notes,  in whole or in part,  at the  redemption
prices  (expressed  as  percentages  of  principal  amount) set forth below plus
accrued  and  unpaid  interest  thereon,  if  any,  to the  applicable  date  of
redemption,  if redeemed during the twelve-month period beginning on December 15
of the years indicated below:

                  Year                                       Percentage
                  ----                                       ----------
                  2007...................................     103.875%
                  2008...................................     102.583%
                  2009...................................     101.292%
                  2010 and thereafter....................     100.000%

         (b)  Notwithstanding the provisions of clause (a) of this Section 3.07,
at any time on or prior to  December  15,  2005,  ACC shall  have the  option to
redeem up to 35% of the aggregate  principal  amount of the Notes (including the
original  principal amount of any Additional  Notes) at a redemption price equal
to 107.750% of the aggregate  principal amount thereof,  plus accrued and unpaid
interest  thereon,  if any, to the applicable  date of redemption,  with the net
proceeds of one or more public  offerings of ACC Common Stock;  provided that at
least 65% of the aggregate principal amount of the Notes (including the original
principal amount of any Additional Notes) remains outstanding  immediately after
the occurrence of such redemption and provided further that each such redemption
shall occur within 60 days of the date of the closing of the  applicable  public
offering.

         (c) At any time prior to December 15,  2005,  upon a Change of Control,
ACC shall have the option to redeem  the  Notes,  in whole or in part,  upon not
less than 30 days'  notice,  within  180 days of such  Change of  Control,  at a
redemption price equal to the sum of (i) the principal amount thereof, plus (ii)
accrued  and  unpaid  interest  thereon,  if  any,  to the  applicable  date  of
redemption, plus (iii) the Applicable Premium.

         (d) Any redemption  pursuant to this Section 3.07 shall be made, to the
extent  applicable,  pursuant to the  provisions  of Sections  3.01 through 3.06
hereof.

         The calculation of any Applicable  Premium  required by Section 3.07(c)
above shall be set forth in an Officers' Certificate delivered to the Trustee.

Section 3.08.     Mandatory Redemption.
                  --------------------

         ACC shall not be required to make mandatory  redemption or sinking fund
payments with respect to the Notes.

Section 3.09.     [INTENTIONALLY OMITTED].

Section 3.10.     Offer To Purchase by Application of Excess Proceeds.
                  ---------------------------------------------------

         In the event  that,  pursuant  to  Section  4.10  hereof,  ACC shall be
required to commence an offer to all Holders and, to the extent  required by the
terms thereof,  the holders of Pari Passu Debt, to purchase Notes and Pari Passu
Debt (an "Asset Sale Offer"), it shall follow the procedures specified below.

         The Asset Sale Offer shall remain open for a period of 20 Business Days
following  its  commencement  and no longer,  except to the extent that a longer
period is required by applicable  law (the "Offer  Period").  No later than five
Business Days after the  termination of the Offer Period (the "Purchase  Date"),
ACC shall purchase the principal amount of Notes and Pari Passu Debt required to
be purchased  pursuant to Section  4.10 hereof (the "Offer  Amount") or, if less
than the Offer Amount has been tendered,  all Notes and Pari Passu Debt


                                      -23-


tendered in response to the Asset Sale Offer. Payment for any Notes so purchased
shall be made in the same manner as interest payments are made.

         If the Purchase  Date is on or after an interest  record date and on or
before the related  interest payment date, any accrued and unpaid interest shall
be paid to the  Person  in  whose  name a Note is  registered  at the  close  of
business on such record date,  and no  additional  interest  shall be payable to
Holders who tender Notes pursuant to the Asset Sale Offer.

         Upon the  commencement of an Asset Sale Offer, ACC shall send, by first
class mail, a notice to the Trustee and to each of the  Holders,  with a copy to
the Trustee.  The notice shall contain all instructions and materials  necessary
to enable such  Holders to tender  Notes  pursuant to the Asset Sale Offer.  The
procedures  for  commencing  an Asset  Sale  Offer to holders of Pari Passu Debt
shall be governed by the terms of the agreements governing such Pari Passu Debt.
The Asset Sale Offer  shall be made to all Holders of Notes.  The notice,  which
shall govern the terms of the Asset Sale Offer, shall state:

                  (a) that the Asset Sale Offer is being made  pursuant  to this
         Section  3.10 and Section  4.10 hereof and the length of time the Asset
         Sale Offer shall remain open;

                  (b) the Offer  Amount,  the  purchase  price and the  Purchase
         Date;

                  (c) that any Note not tendered or accepted  for payment  shall
         continue to accrue interest;

                  (d) that, unless ACC defaults in making such payment, any Note
         accepted  for  payment  pursuant to the Asset Sale Offer shall cease to
         accrue interest after the Purchase Date;

                  (e) that Holders electing to have a Note purchased pursuant to
         an Asset Sale  Offer may only elect to have all of such Note  purchased
         and may not elect to have only a portion of such Note purchased;

                  (f) that Holders electing to have a Note purchased pursuant to
         any Asset Sale Offer shall be required to surrender the Note,  with the
         form titled "Option of Holder to Elect  Purchase" on the reverse of the
         Note  completed,   or  transfer  by  book-entry  transfer,  to  ACC,  a
         depositary,  if  appointed  by ACC,  or a Paying  Agent at the  address
         specified in the notice at least three days before the Purchase Date;

                  (g) that Holders shall be entitled to withdraw  their election
         if ACC,  the  depositary  or the  Paying  Agent,  as the  case  may be,
         receives,  not  later  than  the  expiration  of the  Offer  Period,  a
         telegram,  telex,  facsimile  transmission  or letter setting forth the
         name of the  Holder,  the  principal  amount  of the  Note  the  Holder
         delivered for purchase and a statement  that such Holder is withdrawing
         his election to have such Note purchased;

                  (h)  that,  if  the  aggregate   principal   amount  of  Notes
         surrendered by Holders and holders of Pari Passu Debt exceeds the Offer
         Amount,  ACC shall select the Notes to be purchased on a pro rata basis
         (with such adjustments as may be deemed appropriate by ACC so that only
         Notes in denominations of $1,000, or integral multiples thereof,  shall
         be purchased); and

                  (i) that Holders whose Notes were purchased only in part shall
         be  issued  new Notes  equal in  principal  amount  to the  unpurchased
         portion  of  the  Notes   surrendered  (or  transferred  by  book-entry
         transfer).


                                      -24-


         On or before the Purchase Date, ACC shall, to the extent lawful, accept
for payment,  on a pro rata basis to the extent  necessary,  the Offer Amount of
Notes or portions thereof tendered  pursuant to the Asset Sale Offer, or if less
than the Offer Amount has been tendered,  all Notes tendered,  and shall deliver
to the  Trustee an  Officers'  Certificate  stating  that such Notes or portions
thereof were  accepted for payment by ACC in  accordance  with the terms of this
Section 3.10. ACC, the Depository or the Paying Agent, as the case may be, shall
promptly (but in any case not later than three  Business Days after the Purchase
Date) mail or deliver to each  tendering  Holder an amount equal to the purchase
price of the Notes tendered by such Holder and accepted by ACC for purchase, and
ACC shall promptly issue a new Note, and the Trustee,  upon written request from
ACC, shall  authenticate and mail or deliver such new Note to such Holder,  in a
principal amount equal to any unpurchased  portion of the Note surrendered.  Any
Note not so accepted shall be promptly  mailed or delivered by ACC to the Holder
thereof.  ACC shall publicly announce the results of the Asset Sale Offer on the
Purchase Date.

         Other than as specifically  provided in this Section 3.10, any purchase
pursuant  to this  Section  3.10 shall be made  pursuant  to the  provisions  of
Sections 3.01 through 3.06 hereof.

                                    ARTICLE 4

                                    COVENANTS

Section 4.01.     Payment of Notes.
                  ----------------

         ACC shall pay or cause to be paid the  principal of,  premium,  if any,
and interest on the Notes (including any additional interest required to be paid
pursuant to the provisions of the  Registration  Rights  Agreement) on the dates
and in the  manner  provided  in the  Notes.  Principal,  premium,  if any,  and
interest shall be considered  paid on the date due if the Paying Agent, if other
than ACC or a Restricted Subsidiary thereof, holds as of 10:00 a.m. Eastern Time
on the due date  money  deposited  by ACC in  immediately  available  funds  and
designated  for  and  sufficient  to pay all  principal,  premium,  if any,  and
interest then due. The Paying Agent shall return to ACC, no later than five days
following  the date of payment,  any money  (including  accrued  interest)  that
exceeds such amount of principal of,  premium,  if any, and interest paid on the
Notes.

         ACC  shall  pay  interest  (including  post-petition  interest  in  any
proceeding  under any Bankruptcy Law) on overdue  principal at the rate equal to
1% per annum in excess of the then applicable  interest rate on the Notes to the
extent lawful; it shall pay interest  (including  post-petition  interest in any
proceeding  under  any  Bankruptcy  Law) on  overdue  installments  of  interest
(without  regard to any applicable  grace period) at the same rate to the extent
lawful.

Section 4.02.     Maintenance of Office or Agency.
                  -------------------------------

         ACC shall  maintain in the Borough of Manhattan,  The City of New York,
an office or agency  (which may be an office of the Trustee or an  affiliate  of
the  Trustee,  Registrar or  co-registrar)  where Notes may be  surrendered  for
registration  of transfer or exchange  and where  notices and demands to or upon
ACC in respect  of the Notes and this  Indenture  may be served.  ACC shall give
prompt  written  notice to the  Trustee of the  location,  and any change in the
location,  of such  office or agency.  If at any time ACC shall fail to maintain
any such required office or agency or shall fail to furnish the Trustee with the
address thereof, such presentations, surrenders, notices and demands may be made
or served at the Corporate Trust Office of the Trustee.

         ACC may also from time to time  designate  one or more other offices or
agencies  where the Notes may be  presented or  surrendered  for any or all such
purposes and may from time to time rescind such designations; provided, however,
that no such  designation  or rescission  shall in any manner relieve ACC of its
obligation to


                                      -25-


maintain an office or agency in the Borough of  Manhattan,  The City of New York
for such  purposes.  ACC shall give prompt  written notice to the Trustee of any
such  designation  or  rescission  and of any change in the location of any such
other office or agency.

         ACC hereby  designates  the office of the  Trustee's  affiliate,  State
Street  Bank and Trust  Company,  N.A.,  located  at 61  Broadway,  15th  Floor,
Corporate  Trust Window,  New York, New York 10006, as one such office or agency
of ACC in accordance with Section 2.03 hereof.

Section 4.03.     Reports.
                  -------

         (a) Whether or not required by the rules and regulations of the SEC and
within the applicable time periods that are (or would be) prescribed thereby, so
long as any Notes are  outstanding,  ACC shall  furnish to the  Trustee  and the
Trustee  shall  furnish to all Holders (i) all  quarterly  and annual  financial
information  that would be required to be  contained in a filing with the SEC on
Forms  10-Q  and  10-K if ACC was  required  to file  such  forms,  including  a
"Management's  Discussion  and  Analysis of Financial  Condition  and Results of
Operations" and, with respect to the annual  information  only, a report thereon
by ACC's certified independent  accountants,  and (ii) all reports that would be
required  to be filed with the SEC on Form 8-K if ACC was  required to file such
reports.  In addition,  whether or not required by the rules and  regulations of
the SEC, ACC shall file a copy of all such  information  with the SEC for public
availability  (unless the SEC will not accept such a filing) and shall  promptly
make such  information  available to all  securities  analysts  and  prospective
investors who request it in writing.  ACC shall at all times comply with TIA ss.
314(a).

         (b)  For  so  long  as  any  Transfer   Restricted   Securities  remain
outstanding,  ACC shall furnish to all Holders and prospective purchasers of the
Notes designated by the holders of Transfer Restricted Securities, promptly upon
their  request,  the  information  required  to be  delivered  pursuant  to Rule
144A(d)(4) under the Securities Act.

         (c)  ACC  shall  reimburse  the  Trustee  for its  reasonable  expenses
incurred in  reproducing a sufficient  number of copies of all reports and other
documents  and  information  that the  Trustee may be required to deliver to the
Holders under this Section 4.03.

Section 4.04.     Compliance Certificate.
                  ----------------------

         (a) ACC shall deliver to the Trustee,  within 120 days after the end of
each  fiscal  year,  an  Officers'  Certificate  stating  that a  review  of the
activities of ACC and its Restricted  Subsidiaries  during the preceding  fiscal
year has been made under the supervision of the signing  Officers with a view to
determining  whether  each has  kept,  observed,  performed  and  fulfilled  its
obligations under this Indenture,  and further stating,  as to each such Officer
signing such  certificate,  that, to the best of his or her knowledge,  each has
kept,  observed,  performed and fulfilled each and every  covenant  contained in
this Indenture and is not in default in the  performance or observance of any of
the terms,  provisions  and  conditions of this  Indenture  (or, if a Default or
Event of Default shall have occurred,  describing all such Defaults or Events of
Default of which he or she may have  knowledge and what action each is taking or
proposes  to take with  respect  thereto)  and  that,  to the best of his or her
knowledge,  no event has  occurred  and remains in  existence by reason of which
payments on account of the  principal  of or  interest,  if any, on the Notes is
prohibited  or if such event has occurred,  a description  of the event and what
action each is taking or proposes to take with respect thereto.

         (b) So long as not contrary to the then current  recommendations of the
American  Institute  of Certified  Public  Accountants,  the year-end  financial
statements delivered pursuant to Section 4.03(a) above shall be accompanied by a
written statement of ACC's independent  public  accountants (who shall be a firm
of established national reputation reasonably  satisfactory to the Trustee) that
in  making  the  examination  necessary  for


                                      -26-


certification of such financial statements,  nothing has come to their attention
that would lead them to believe that ACC has violated any provisions of Sections
4.01,  4.05, 4.07, 4.08, 4.09, 4.10, 4.11, 4.12, 4.13, 4.14 or 4.15 hereof or of
Article  Five hereof or, if any such  violation  has  occurred,  specifying  the
nature  and  period  of  existence  thereof,   it  being  understood  that  such
accountants  shall not be liable  directly or  indirectly  to any Person for any
failure to obtain knowledge of any such violation.

         (c) ACC shall, so long as any of the Notes are outstanding,  deliver to
the Trustee,  forthwith  upon any Officer  becoming  aware of (i) any Default or
Event of  Default  or (ii) any  event  of  default  under  any  other  mortgage,
indenture  or  instrument  as that term is used in Section  6.01(e)  hereof,  an
Officers'  Certificate  specifying  such  Default or Event of  Default  and what
action ACC is taking or proposes to take with respect thereto.

Section 4.05.     Taxes.
                  -----

         ACC shall,  and shall cause each of its  Subsidiaries  to, pay prior to
delinquency all material taxes, assessments and governmental levies, except such
as are contested in good faith and by appropriate proceedings.

Section 4.06.     Stay, Extension and Usury Laws.
                  ------------------------------

         ACC  covenants (to the extent that it may lawfully do so) that it shall
not at any time insist upon,  plead, or in any manner  whatsoever  claim or take
the benefit or advantage of, any stay,  extension or usury law wherever enacted,
now or at any time  hereafter  in force,  that may affect the  covenants  or the
performance  of this  Indenture;  and ACC (to the extent that it may lawfully do
so)  hereby  expressly  waives  all  benefit  or  advantage  of any such law and
covenants that it shall not, by resort to any such law, hinder,  delay or impede
the execution of any power herein  granted to the Trustee,  but shall suffer and
permit the execution of every such power as though no such law has been enacted.

Section 4.07.     Restricted Payments.
                  -------------------

         ACC shall not and shall not permit any of its  Restricted  Subsidiaries
to,  directly or  indirectly:  (i) declare or pay any  dividend  on, or make any
payment or distribution  in respect of, or purchase,  redeem or retire for value
any Capital Stock of ACC or any of its Restricted  Subsidiaries  (except Capital
Stock held by ACC or a Wholly  Owned  Restricted  Subsidiary  or Majority  Owned
Subsidiary),  other than in  exchange  for ACC's own Capital  Stock  (other than
Disqualified Stock); (ii) make any principal payment on, or redeem,  repurchase,
defease or otherwise  acquire or retire for value, more than one year prior to a
scheduled  principal  payment  or  maturity,  Debt  of  ACC  that  is  expressly
subordinated  in right of  payment to the  Notes;  or (iii) make any  Restricted
Investments  (such  payments  and other  actions  described  in the  immediately
preceding  clauses (i), (ii) and (iii),  collectively,  "Restricted  Payments"),
unless  at the time of and  after  giving  effect  to such  proposed  Restricted
Payment:

                  (a) no Default or Event of Default  shall have occurred and be
         continuing; and

                  (b) such  Restricted  Payment,  together  with  the  aggregate
         amount of all other Restricted Payments declared or made after June 30,
         1992  (net  of  any  Restricted  Payments  repaid  to ACC or any of its
         Restricted  Subsidiaries to the extent not included in clause (2) below
         and any  Restricted  Payment  made by ACC pursuant to clause (z) below)
         shall  not  exceed,  at the  date of  determination,  the sum of (1) an
         amount equal to ACC's Cumulative Operating Cash Flow from June 30, 1992
         to the end of ACC's most recently ended full fiscal quarter, taken as a
         single  accounting  period,   less  the  product  of  1.4  times  ACC's
         Cumulative  Total  Interest  Expense  from June 30,  1992 to the end of
         ACC's  most  recently  ended  full  fiscal  quarter,  taken as a single
         accounting  period,  plus (2) an amount equal to the net cash  proceeds
         received by ACC as capital contributions to ACC (other than from any of
         its Restricted


                                      -27-


         Subsidiaries  and  other  than  from the  return  of  advances  made by
         Perpetual in connection with the  Refinancing)  after June 30, 1992, or
         from the issuance and sale by ACC (other than to any of its  Restricted
         Subsidiaries)  after  June  30,  1992  of  Capital  Stock  (other  than
         Disqualified Stock), plus (3) $3.5 million.

         The foregoing provisions shall not prohibit:

                  (w) the payment of any dividend  within 60 days after the date
         of declaration  thereof,  if at said date of  declaration  such payment
         would have complied with the provisions of this Section 4.07;

                  (x) any transaction with an officer or director of ACC entered
         into in the  ordinary  course of business  (including  compensation  or
         employee benefit arrangements with any officer or director of ACC);

                  (y) the payment of any dividend by a Majority Owned Subsidiary
         to holders of its Capital Stock; and

                  (z) so long as no  Default  or Event  of  Default  shall  have
         occurred  and be  continuing,  one or more  Restricted  Payments  in an
         aggregate  amount of up to $25.0 million on or after the Issuance Date;
         provided  that after giving effect to any such  Restricted  Payment ACC
         could  incur  $1.00 of  additional  Debt under the first  paragraph  of
         Section 4.09.

         The amount of all  Restricted  Payments  (other than cash) shall be the
fair market value  (evidenced  by a resolution  of ACC's Board of Directors  set
forth in an Officers'  Certificate  delivered to the Trustee) on the date of the
Restricted  Payment  of the  asset  proposed  to be  transferred  by ACC or such
Restricted  Subsidiary,  as the case may be, pursuant to the Restricted Payment.
At the  conclusion of each calendar  month,  ACC shall deliver to the Trustee an
Officers' Certificate  identifying the Restricted Payments made during the prior
month,  stating that such Restricted Payments were permitted,  setting forth the
amount of Restricted  Payments still  available to be made and setting forth the
basis upon which the  calculations  required by this Section 4.07 were computed,
which   calculations  may  be  based  upon  ACC's  latest  available   financial
statements.

Section 4.08.    Dividend and Other Payment Restrictions Affecting Subsidiaries.
                 --------------------------------------------------------------

         ACC shall not, and shall not permit any of its Restricted  Subsidiaries
to,  directly or  indirectly,  create or  otherwise  cause or suffer to exist or
become effective any encumbrance or restriction on the ability of any Restricted
Subsidiary to (i)(a) pay dividends or make any other distributions to ACC or any
of its Restricted  Subsidiaries  (1) on its Capital Stock or (2) with respect to
any other interest or  participation  in, or measured by, its profits or (b) pay
any Debt owed to ACC or any of its Restricted  Subsidiaries,  (ii) make loans or
advances to ACC or any of its Restricted  Subsidiaries  or (iii) transfer any of
its  properties or assets to ACC or any of its Restricted  Subsidiaries,  except
for such  encumbrances or  restrictions  existing under or by reason of (A) Debt
existing  on the date of this  Indenture,  (B)  Debt  permitted  to be  incurred
pursuant to clauses (vi) or (vii) of the second paragraph of Section 4.09 hereof
or  (C)  any  amendments,  modifications,   restatements,  renewals,  increases,
supplements,  refundings,  replacements or refinancings  are no more restrictive
with  respect  to such  dividend  and  other  payment  restrictions  than  those
contained in the agreements governing such Debt as in effect on the date of this
Indenture.

Section 4.09.     Incurrence of Debt and Issuance of Preferred Stock.
                  --------------------------------------------------

         ACC shall not, and shall not permit any of its Restricted  Subsidiaries
to, (i) directly or indirectly,  create,  incur, assume,  guarantee or otherwise
become directly or indirectly liable, contingently or otherwise, with respect to
(collectively,  "incur") any Debt  (including  Acquired  Debt) or (ii) issue any
shares of preferred stock;


                                      -28-


provided,  however,  that  ACC  may  (a)  issue  preferred  stock  that  is  not
Disqualified  Stock at any time and (b) incur Debt (including  Acquired Debt) or
issue shares of Disqualified  Stock if, in each case, the Debt to Operating Cash
Flow Ratio of ACC and its Restricted  Subsidiaries at the time of the incurrence
of such Debt or the issuance of such shares of Disqualified  Stock, after giving
pro forma effect thereto, is 7:1 or less; provided,  further, that any such Debt
incurred  by ACC that is not Senior Debt shall have a Weighted  Average  Life to
Maturity no shorter than the Weighted Average Life to Maturity of the Notes.

         The foregoing  limitations  shall not apply to the incurrence of any of
the following (collectively, "Permitted Debt"):

                  (i)  revolving  credit  Debt of ACC  under the  Senior  Credit
         Facility not to exceed $100.0 million at any time outstanding;

                 (ii)  intercompany  Debt  between  or among  ACC and any of its
         Wholly Owned  Restricted  Subsidiaries  or a Majority Owned  Subsidiary
         made pursuant to an intercompany note in the form attached as Exhibit D
         hereto that provides that any such Debt of ACC is  subordinated  to the
         Notes;  provided,  that (x) any disposition,  pledge or transfer of any
         such  Debt to a Person  (other  than ACC or a Wholly  Owned  Restricted
         Subsidiary  or a  Majority  Owned  Subsidiary)  will be deemed to be an
         incurrence  of such Debt by the  obligor not  permitted  by this clause
         (ii)  and (y) any  transaction  pursuant  to  which  any  Wholly  Owned
         Restricted  Subsidiary or Majority Owned Subsidiary that has Debt owing
         to ACC or any other Wholly Owned  Restricted  Subsidiary  or a Majority
         Owned Subsidiary ceases to be a Wholly Owned Restricted Subsidiary or a
         Majority Owned  Subsidiary shall be deemed to be the incurrence of Debt
         by ACC or such other Wholly  Owned  Restricted  Subsidiary  or Majority
         Owned Subsidiary that is not permitted by this clause (ii);

                (iii)  Debt represented  by the existing 8.875% Notes and, until
         the date of redemption or purchase thereof, the 9 3/4% Debentures;

                 (iv) Debt represented by the Notes;

                  (v) Debt existing on the date of this Indenture;

                 (vi) other Debt  incurred  after the date of this  Indenture by
         ACC in an aggregate  principal  amount at any time  outstanding  not to
         exceed $40.0 million less the sum of (a) the aggregate principal amount
         of Debt  incurred  plus (b) the  aggregate  liquidation  preference  of
         preferred  stock issued by Restricted  Subsidiaries  pursuant to clause
         (vii) of this paragraph;

                (vii) Debt  incurred  and shares of  preferred  stock  issued by
         Restricted  Subsidiaries,  so  long  as the  sum of (a)  the  aggregate
         principal  amount of all  outstanding  Debt of Restricted  Subsidiaries
         plus  (b)  the  aggregate  liquidation  preference  of all  outstanding
         preferred stock of Restricted Subsidiaries shall not exceed at any time
         $20.0 million less the aggregate  principal amount of Debt in excess of
         $20.0  million  incurred  by  ACC  pursuant  to  clause  (vi)  of  this
         paragraph;

               (viii)  the   incurrence   by  ACC  or  any  of  its   Restricted
         Subsidiaries  of Debt in connection with the acquisition of assets or a
         new Restricted Subsidiary;  provided that such Debt was incurred by the
         prior owner of such assets or such Restricted  Subsidiary prior to such
         acquisition  by ACC or one of its Restricted  Subsidiaries  and was not
         incurred in connection with, or in  contemplation  of, such acquisition
         by ACC or one of its Restricted  Subsidiaries;  and,  provided  further
         that the Debt to  Operating  Cash Flow Ratio of ACC and its  Restricted
         Subsidiaries after giving pro forma effect to such acquisition and such
         incurrence would be 7:1 or less;


                                      -29-


                 (ix) Debt in respect of  interest  rate  protection  or hedging
         arrangements  entered into by ACC to fix the floating  interest rate or
         float the fixed  interest  rate of any Debt  permitted  to be  incurred
         under this Indenture; and

                  (x) Debt of ACC  incurred in exchange  for or the  proceeds of
         which are used to exchange,  refinance  or refund any of the  foregoing
         Debt so long as (a) the principal  amount of the Debt incurred does not
         exceed  the  principal  amount  (plus  any  premium)  of  the  Debt  so
         exchanged,  refinanced  or  refunded,  plus the  amount  of  reasonable
         expenses incurred in connection  therewith,  (b) the Debt incurred does
         not have an average  life  shorter  than the  average  life of the Debt
         being so exchanged,  refinanced or refunded and (c) if applicable,  the
         Debt incurred ranks as subordinated in right of payment to the Notes as
         the Debt being so exchanged, refinanced or refunded.

         ACC shall not permit any of its Unrestricted Subsidiaries to incur Debt
that  would be  recourse  to ACC or any  Restricted  Subsidiary  or any of their
respective assets.

Section 4.10.     Asset Sales.
                  -----------

         ACC shall not, and shall not permit any of its Restricted  Subsidiaries
to,  directly  or  indirectly,  engage in any Asset Sale  unless (i) ACC (or the
Restricted Subsidiary, as the case may be) receives consideration at the time of
such  Asset  Sale at least  equal  to the  fair  market  value  (evidenced  by a
resolution  of ACC's Board of Directors  set forth in an  Officers'  Certificate
delivered  to the  Trustee)  of the  assets or Capital  Stock  issued or sold or
otherwise  disposed  of and  (ii) at  least  85% of the  consideration  therefor
received  by ACC or such  Restricted  Subsidiary  is in the form of cash or Cash
Equivalents;  provided,  however, that ACC (or the Restricted Subsidiary, as the
case may be) may receive  Permitted Asset Sale  Consideration in lieu of cash or
Cash  Equivalents if ACC and its Restricted  Subsidiaries  could incur, on a pro
forma basis after giving effect to such Asset Sale and receipt of such Permitted
Asset Sale  Consideration  as if the same had  occurred at the  beginning of the
most recent four full fiscal  quarters ending  immediately  prior to the date of
such Asset Sale, at least $1.00 of additional  Debt (other than Permitted  Debt)
pursuant to Section  4.09  hereof.  Within one year after the receipt of any Net
Cash Proceeds from any Asset Sale,  ACC (or the  Restricted  Subsidiary,  as the
case may be) may apply  such Net Cash  Proceeds,  at its  option,  (a) to retire
Senior Debt or (b) to the purchase of a controlling interest in another business
or to the purchase of capital assets, in each case, in the same line of business
as ACC was engaged in on the date of this Indenture.  Any Net Cash Proceeds from
any Asset Sale that are not applied or  invested  as  provided in the  preceding
sentence constitute Excess Proceeds (the "Excess Proceeds").

         Within five Business Days of each date on which the aggregate amount of
Excess  Proceeds  exceeds  $5.0  million,  ACC shall make an Asset Sale Offer to
purchase the maximum  principal amount of Notes and any Pari Passu Debt that may
be purchased out of the Excess Proceeds,  at an offer price in cash in an amount
equal  to 100% of the  principal  amount  (or  accreted  value,  as  applicable)
thereof,  plus  accrued  and unpaid  interest  thereon,  if any,  to the date of
purchase,  in accordance with the procedures set forth in this Indenture and the
agreements governing such Pari Passu Debt, as applicable. To the extent that the
aggregate amount of Notes and Pari Passu Debt tendered  pursuant to Section 3.10
hereof is less than the Excess Proceeds, ACC (or such Restricted Subsidiary,  as
the case may be) may use any  remaining  Excess  Proceeds for general  corporate
purposes.  If the  aggregate  principal  amount  of Notes  and Pari  Passu  Debt
surrendered by the holders  thereof exceeds the amount of Excess  Proceeds,  the
Trustee shall select the Notes and Pari Passu Debt to be purchased on a pro rata
basis,  based upon the  principal  amount (or  accreted  value,  as  applicable)
thereof  surrendered in such Asset Sale Offer.  Upon completion of such offer to
purchase,  the amount of Excess  Proceeds  shall be reset at zero.  The  Company
shall  obtain  from the  indenture  trustee,  representative  or agent under the
documentation  governing  any Pari Passu Debt the amount of Pari Passu Debt that
has been  tendered  in  connection  with any Asset Sale Offer and  provide  such
information in an Officers' Certificate delivered to the Trustee.


                                      -30-


Section 4.11.     Transactions With Affiliates.
                  ----------------------------

         ACC shall not, and shall not permit any of its Restricted  Subsidiaries
to, sell,  lease,  transfer or  otherwise  dispose of any of its  properties  or
assets to, or purchase any property or assets from, or enter into, amend or make
any contract, agreement,  understanding, loan, advance or guarantee with, or for
the  benefit  of,  any  Affiliate   (each  of  the   foregoing,   an  "Affiliate
Transaction"),  unless (i) such  Affiliate  Transaction  is on terms that are no
less  favorable to ACC or the  relevant  Restricted  Subsidiary  than those that
would be obtained in a comparable  transaction with an unrelated Person and (ii)
ACC delivers to the Trustee (a) with  respect to any  Affiliate  Transaction  or
series of related Affiliate  Transactions  involving aggregate  consideration in
excess of $1.0 million, a resolution of ACC's Board of Directors set forth in an
Officers'  Certificate  certifying that such Affiliate Transaction complies with
clause (i) above and that such  Affiliate  Transaction  has been  approved  by a
majority of the members of ACC's Board of Directors  and (b) with respect to any
Affiliate  Transaction  or series of related  Affiliate  Transactions  involving
aggregate consideration in excess of $5.0 million, an opinion as to the fairness
to the Holders of such  Affiliate  Transaction  from a  financial  point of view
issued by an investment banking firm of national standing.  Notwithstanding  the
foregoing,  each  of the  following  shall  be  deemed  not  to be an  Affiliate
Transaction: (1) any transaction with an officer or director of ACC entered into
in the ordinary course of business  (including  compensation or employee benefit
arrangements  with any officer or director of ACC), (2) any transaction  entered
into  by  ACC or any of its  Restricted  Subsidiaries  with  another  Restricted
Subsidiary of ACC, (3)  transactions in existence on the date of this Indenture,
(4) payments  made by ACC  substantially  in conformity  with past  practices to
reimburse  Perpetual for any group insurance  policies purchased by Perpetual to
the extent that the  coverage of such  policies  includes  ACC,  its  Restricted
Subsidiaries and their respective  operations,  (5) payments by ACC to Perpetual
in  respect  of tax  liabilities  pursuant  to the  terms  of  the  Tax  Sharing
Agreement,  as  amended  to and in  effect  on the  date  of this  Indenture  or
thereafter   amended   to  the  extent   such   subsequent   amendment   is  not
disadvantageous  to  ACC  or  its  Subsidiaries,  and  (6)  Restricted  Payments
permitted by Section 4.07 hereof and any Permitted Investment.

Section 4.12.     Liens Securing Subordinated Debt.
                  --------------------------------

         ACC shall not, and shall not permit any of its Restricted  Subsidiaries
to,  directly or indirectly  create,  incur,  assume or suffer to exist any Lien
securing Debt that is pari passu with or subordinated in right of payment on the
Notes (other than Permitted Liens) upon any of its property or assets (including
intercompany notes), now owned or acquired after the date of this Indenture,  or
any  income or  profits  therefrom,  except if the  Notes are  directly  secured
equally and ratably with (or prior to, in the case of Liens with respect to Debt
that is  subordinated  in right of  payment  to the  Notes)  the  obligation  or
liability secured by such Lien.

Section 4.13.     Other Subordinated Debt.
                  -----------------------

         ACC shall not  incur or permit to remain  outstanding  any Debt that is
subordinated  or junior in right of payment to any Senior Debt and senior in any
respect in right of payment to the Notes.

Section 4.14.     Corporate Existence.
                  -------------------

         Subject  to  Article  5  hereof,  ACC  shall do or cause to be done all
things  necessary  to preserve  and keep in full force and effect its  corporate
existence, and the corporate,  partnership or other existence of each Restricted
Subsidiary,  in accordance with the respective  organizational documents (as the
same may be amended from time to time) of ACC or each Restricted  Subsidiary and
the rights  (charter and  statutory),  licenses and  franchises  of ACC and each
Restricted  Subsidiary;  provided,  however,  that ACC shall not be  required to
preserve any such right, license or franchise, or the corporate,  partnership or
other  existence  of any of its  Restricted  Subsidiaries,  if  ACC's  Board  of
Directors shall determine that the  preservation  thereof is no longer desirable
in the


                                      -31-


conduct  of the  business  of ACC and its  Restricted  Subsidiaries,  taken as a
whole,  and that the loss thereof is not adverse in any material  respect to the
Holders.

Section 4.15.     Change of Control.
                  -----------------

         (a) In the event of a Change of Control,  unless  irrevocable notice of
redemption  for all of the Notes is given within 30 days after the occurrence of
such Change of Control in accordance  with the provisions of Article Three,  ACC
shall  commence  an offer (a  "Change  of  Control  Offer")  to each  Holder  to
repurchase all or any part (equal to $1,000 or an integral  multiple thereof) of
each Holder's  Notes at a purchase  price equal to 101% of the principal  amount
thereof,  plus  accrued  and unpaid  interest  thereon,  if any,  to the date of
purchase  (the  "Change of Control  Payment").  On the last  Business Day of the
fiscal quarter of ACC next following the occurrence of a Change of Control,  ACC
shall mail a notice to each Holder at such Holder's last registered address with
a copy to the  Trustee  and the  Paying  Agent  stating:  (1) that the Change of
Control  Offer is being made  pursuant to this  Section  4.15 and that all Notes
tendered will be accepted for payment;  (2) the purchase  price and the purchase
date (the "Change of Control Payment Date"); (3) that any Note not tendered will
continue to accrue interest; (4) that, unless ACC defaults in the payment of the
Change of Control Payment, all Notes accepted for payment pursuant to the Change
of Control  Offer  shall  cease to accrue  interest  after the Change of Control
Payment Date; (5) that Holders electing to have any Notes purchased  pursuant to
a Change of Control Offer will be required to surrender the Notes, with the form
titled  "Option  of  Holder  to Elect  Purchase"  on the  reverse  of the  Notes
completed,  to the Paying Agent at the address  specified in the notice prior to
the close of business on the third  Business Day preceding the Change of Control
Payment Date;  (6) that Holders will be entitled to withdraw  their  election if
the Paying  Agent  receives,  not later than the close of  business on the third
Business Day  preceding the Change of Control  Payment Date, a telegram,  telex,
facsimile  transmission  or letter  setting  forth the name of the  Holder,  the
principal  amount of Notes  delivered  for purchase,  and a statement  that such
Holder is  withdrawing  his election to have the Notes  purchased;  and (7) that
Holders  whose Notes are being  purchased  only in part will be issued new Notes
equal in principal amount to the unpurchased  portion of the Notes  surrendered,
which  unpurchased  portion  must be equal to $1,000 in  principal  amount or an
integral multiple thereof.  ACC shall comply with the requirements of Rule 14e-1
under the Exchange Act and any other securities laws and regulations  thereunder
to the extent such laws and  regulations  are applicable in connection  with the
repurchase of Notes in connection with a Change of Control.

         (b) On the Change of Control  Payment  Date,  ACC shall,  to the extent
lawful,  (1) accept for payment all Notes or portions thereof properly  tendered
pursuant to the Change of Control  Offer,  (2) deposit  with the Paying Agent an
amount  equal to the  Change  of  Control  Payment  in  respect  of all Notes or
portions  thereof so tendered  and (3) deliver or cause to be  delivered  to the
Trustee the Notes so accepted together with an Officers' Certificate stating the
aggregate  principal amount of Notes or portions thereof being purchased by ACC.
The Paying Agent shall promptly mail to each Holder of Notes so tendered payment
in an amount equal to the purchase  price for the Notes,  and the Trustee  shall
promptly  authenticate  and mail (or cause to be  transferred  by book-entry) to
each Holder a new Note equal in principal  amount to any unpurchased  portion of
the Notes  surrendered by such Holder,  if any; provided that each such new Note
shall be in a principal amount of $1,000 or an integral  multiple  thereof.  ACC
shall publicly announce the results of the Change of Control Offer on or as soon
as practicable after the Change of Control Payment Date.

         (c) Prior to the  commencement of a Change of Control Offer pursuant to
this Section  4.15,  but in any event within 90 days after the  occurrence  of a
Change of Control, ACC shall (a) to the extent then required to be repaid, repay
in full all  outstanding  Senior Debt or (b) obtain the requisite  consents,  if
any, under agreements governing all such Senior Debt to permit the redemption of
Notes as provided  for in this  Section  4.15.  ACC shall first  comply with the
requirements of the preceding sentence before it shall be required to repurchase
Notes pursuant to this Section 4.15.


                                      -32-


                                    ARTICLE 5

                                   SUCCESSORS

Section 5.01.     Merger, Consolidation or Sale of Assets.
                  ---------------------------------------

         ACC  shall  not  consolidate  or merge  with or into any  other  Person
(whether or not ACC is the surviving  corporation)  or sell,  assign,  transfer,
lease, convey or otherwise dispose of all or substantially all of its properties
or  assets  (determined  on a  consolidated  basis  for ACC  and its  Restricted
Subsidiaries)  in one or more  related  transactions,  to  another  corporation,
Person or entity (other than the merger of a Wholly Owned Restricted  Subsidiary
of ACC into  another  Wholly  Owned  Restricted  Subsidiary  of ACC or into ACC)
unless (i) ACC is the surviving  corporation  or the entity or the Person formed
by or surviving any such consolidation or merger (if other than ACC) or to which
such sale, assignment,  transfer,  lease,  conveyance or other disposition shall
have been made is a  corporation,  limited  liability  company  or other  entity
organized or existing under the laws of the United States,  any state thereof or
the District of Columbia,  (ii) the entity or Person  formed by or surviving any
such  consolidation  or merger  (if other  than ACC) or the  entity or Person to
which such sale, assignment,  transfer,  lease,  conveyance or other disposition
shall have been made assumes all of the  obligations  of ACC under the Notes and
this  Indenture  pursuant to a  supplemental  indenture,  in each case in a form
reasonably  satisfactory  to the  Trustee  and  under  the  Registration  Rights
Agreement,  (iii)  immediately  after such  transaction,  no Default or Event of
Default  shall have  occurred  and be  continuing  and (iv) ACC or the entity or
Person  formed by or surviving any such  consolidation  or merger (if other than
ACC), or to which such sale, assignment,  transfer,  lease,  conveyance or other
disposition  shall  have  been  made  (A)  shall  have  Consolidated  Net  Worth
immediately  after the transaction equal to or greater than the Consolidated Net
Worth of ACC immediately preceding the transaction and (B) shall, at the time of
such  transaction  and after  giving pro forma effect  thereto,  be permitted to
incur at least $1.00 of additional  Debt (other than Permitted Debt) pursuant to
Section 4.09 hereof.

Section 5.02.     Successor Corporation Substituted.
                  ---------------------------------

         Upon any  consolidation or merger, or any sale,  assignment,  transfer,
lease, conveyance or other disposition of all or substantially all of the assets
of ACC in  accordance  with  Section  5.01 hereof,  the  successor  corporation,
limited liability  company or other entity formed by such  consolidation or into
or with which ACC is merged or to which such sale, assignment,  transfer, lease,
conveyance or other disposition is made shall succeed to, and be substituted for
(so that from and after the date of such  consolidation,  merger,  sale,  lease,
conveyance or other disposition,  the provisions of this Indenture  referring to
"ACC" or the "Company" shall refer instead to the successor corporation, limited
liability company or other entity, and not to ACC), and may exercise every right
and power of ACC under this  Indenture with the same effect as if such successor
Person had been named as ACC herein;  provided,  however,  that the  predecessor
Company  shall not be relieved  from the  obligation to pay the principal of and
interest on the Notes,  except in the case of a sale of all of ACC's assets that
meets the requirements of Section 5.01 hereof.

                                    ARTICLE 6

                              DEFAULTS AND REMEDIES

Section 6.01.     Events of Default.
                  -----------------

         An "Event of Default" occurs if:

                  (a) ACC  defaults  in the payment of interest on any Note when
         the same becomes due and payable  (including  any  additional  interest
         required to be paid  pursuant  to the  provisions  of the  Registration


                                      -33-


         Rights  Agreement)  and the Default  continues for a period of 30 days,
         whether or not such payment is prohibited by the  provisions of Article
         10 hereof;

                  (b)  ACC  defaults  in  the  payment  of the  principal  of or
         premium,  if any,  on any Note  when and as the  same  becomes  due and
         payable  at  maturity,   upon   acceleration,   optional  or  mandatory
         redemption,  required  repurchase  or  otherwise,  whether  or not such
         payment is prohibited by the provisions of Article 10 hereof;

                  (c) ACC fails to observe or perform any covenant, condition or
         agreement  on the part of ACC to be observed or  performed  pursuant to
         Sections 4.07,  4.09 and 5.01 hereof and the Default  continues for the
         period and after the notice specified below;

                  (d) ACC fails to comply  with any of its other  agreements  or
         covenants  in, or  provisions  of, the Notes or this  Indenture and the
         Default continues for the period and after the notice specified below;

                  (e) an event of default  occurs under any mortgage,  indenture
         or other  instrument  under which there may be issued or by which there
         may be secured or evidenced  any Debt for money  borrowed by ACC or any
         of its Restricted  Subsidiaries  (or the payment of which is guaranteed
         by ACC or any of its  Restricted  Subsidiaries),  other than the Notes,
         whether  such  Debt  or  Guarantee  now  exists  or  shall  be  created
         hereafter, if (a) such event of default results from the failure to pay
         at maturity  $5.0 million or more in  principal  amount of such Debt or
         (b) as a result of such event of default the  maturity of $5.0  million
         or more in principal amount of such Debt has been accelerated  prior to
         its stated maturity;

                  (f) a final judgment or judgments for the payment of money are
         entered by a court or courts of competent  jurisdiction  against ACC or
         any of its  Restricted  Subsidiaries  and such  judgment  or  judgments
         remain  undischarged  for a period (during which execution shall not be
         effectively stayed) of 60 days; provided that the aggregate of all such
         undischarged judgments exceeds $5.0 million;

                  (g) ACC or any of its Restricted  Subsidiaries  pursuant to or
         within the meaning of any Bankruptcy Law:

                           (i) commences a voluntary case,

                          (ii)  consents  to the  entry of an order  for  relief
                  against it in an involuntary case,

                         (iii) consents to the  appointment of a Custodian of it
                  or for all or substantially all of its property,

                          (iv) makes a general assignment for the benefit of its
                  creditors, or

                           (v)  generally is not paying its debts as they become
                  due;

                  (h) a court  of  competent  jurisdiction  enters  an  order or
         decree under any Bankruptcy Law that:

                           (i)  is for  relief  against  ACC  or any  Restricted
                  Subsidiary in an involuntary case,


                                      -34-


                          (ii)  appoints a  Custodian  of ACC or any  Restricted
                  Subsidiary or for all or substantially  all of the property of
                  ACC or any Restricted Subsidiary, or

                         (iii) orders the  liquidation  of ACC or any Restricted
                  Subsidiary;

         and  the  order  or  decree  remains  unstayed  and  in effect  for  60
         consecutive days; or

                  (i) ACC shall fail to redeem or purchase the 9 3/4% Debentures
         within 60 days of the Issuance Date.

         An Event of Default shall not be deemed to have  occurred  under clause
(e) or (f) until the Trustee shall have received  written notice from ACC or any
of the Holders or unless a  Responsible  Officer  shall have  knowledge  of such
Event of Default.  A Default  under clause (c) is not an Event of Default  until
the Trustee notifies ACC in writing, or the Holders of at least 25% in principal
amount of the then outstanding  Notes notify ACC and the Trustee in writing,  of
the Default and ACC does not cure the  Default  within 30 days after  receipt of
such notice.  A Default  under  clause (d) is not an Event of Default  until the
Trustee  notifies  ACC in writing,  or the Holders of at least 25% in  principal
amount of the then outstanding  Notes notify ACC and the Trustee in writing,  of
the Default and ACC does not cure the  Default  within 60 days after  receipt of
such  notice.  Such written  notice must specify the Default,  demand that it be
remedied and state that the notice is a "Notice of Default."

         The term "Custodian" means receiver,  trustee, assignee,  liquidator or
similar officer under any Bankruptcy Law.

Section 6.02.     Acceleration.
                  ------------

         If an Event of Default  (other  than an Event of Default  specified  in
clauses  (g) and (h) of  Section  6.01  hereof)  occurs and is  continuing,  the
Trustee by notice to ACC or the Holders of at least 25% in  aggregate  principal
amount of the then  outstanding  Notes by written  notice to ACC and the Trustee
may declare (a "Declaration")  all of the Notes,  including all unpaid principal
of, premium,  if any, and any accrued and unpaid interest  thereon,  if any (the
"Default Amount"), to be due and payable immediately. Upon any such Declaration,
the Default Amount shall become due and payable immediately. Notwithstanding the
foregoing, if an Event of Default specified in clause (g) or (h) of Section 6.01
hereof  occurs with respect to ACC or any of its  Restricted  Subsidiaries,  all
outstanding Notes shall be due and payable immediately without further action or
notice. The Holders of not less than a majority in aggregate principal amount of
the then outstanding Notes by written notice to the Trustee may on behalf of all
of the Holders  rescind an acceleration  and its  consequences if the rescission
would not conflict  with any  judgment or decree and if all  existing  Events of
Default (except nonpayment of principal, interest or premium that has become due
solely because of the acceleration) have been cured or waived.

         If an Event of Default  occurs on or after  December 15, 2007 by reason
of any willful action (or inaction)  taken (or not taken) by or on behalf of ACC
with the intention of avoiding payment of the premium that ACC would have had to
pay if ACC then had elected to redeem the Notes pursuant to Section 3.07 hereof,
then, upon  acceleration  of the Notes, an equivalent  premium shall also become
and be immediately due and payable,  to the extent permitted by law, anything in
this Indenture or in the Notes to the contrary  notwithstanding.  If an Event of
Default  occurs prior to December  15, 2007 by reason of any willful  action (or
inaction)  taken (or not  taken) by or on  behalf of ACC with the  intention  of
avoiding the  prohibition  on redemption of the Notes prior to such date,  then,
upon  acceleration  of the Notes, a premium shall also become and be immediately
due and payable in an amount,  for each of the years beginning on December 15 of
the years set forth below, as set forth below:


                                      -35-


               Year                                     Percentage
               ----                                     ----------
               2002.................................     110.333%
               2003.................................     109.042%
               2004.................................     107.750%
               2005.................................     106.458%
               2006.................................     105.167%

The Trustee shall not be deemed to have knowledge that such  additional  premium
has become and is  immediately  due and payable  unless it has received  written
notice thereof from the Holders of at least 25% in aggregate principal amount of
the then outstanding Notes.

Section 6.03.     Other Remedies.
                  --------------

         If an Event of Default occurs and is continuing, the Trustee may pursue
any available  remedy to collect the payment of principal of,  premium,  if any,
and interest on the Notes or to enforce the  performance of any provision of the
Notes or this Indenture.

         The Trustee may maintain a  proceeding  even if it does not possess any
of the  Notes  or does not  produce  any of them in the  proceeding.  A delay or
omission  by the  Trustee  or any  Holder of a Note in  exercising  any right or
remedy accruing upon an Event of Default shall not impair the right or remedy or
constitute a waiver of or acquiescence in the Event of Default. All remedies are
cumulative to the extent permitted by law.

Section 6.04.     Waiver of Past Defaults.
                  -----------------------

         Holders of not less than a majority in  aggregate  principal  amount of
the then outstanding Notes by notice to the Trustee may on behalf of the Holders
of all of the  Notes  waive an  existing  Default  or Event of  Default  and its
consequences  hereunder,  except a continuing Default or Event of Default in the
payment  of the  principal  of,  premium,  if any,  or  interest  on,  any  Note
(including in connection with an offer to purchase); provided, however, that the
Holders of a majority  in  aggregate  principal  amount of the then  outstanding
Notes may rescind an acceleration  and its  consequences,  including any related
payment default that resulted from such  acceleration in accordance with Section
6.02 hereof.  Upon any such waiver,  such Default shall cease to exist,  and any
Event of Default arising  therefrom shall be deemed to have been cured for every
purpose of this Indenture;  but no such waiver shall extend to any subsequent or
other Default or impair any right consequent thereon.

Section 6.05.     Control by Majority.
                  -------------------

         Holders of a majority in principal amount of the then outstanding Notes
may  direct  the  time,  method  and  place of  conducting  any  proceeding  for
exercising any remedy  available to the Trustee or exercising any trust or power
conferred on it.  However,  the Trustee may refuse to follow any direction  that
conflicts  with law or this  Indenture  or that the  Trustee  determines  may be
unduly  prejudicial  to the rights of other Holders of Notes or that may involve
the Trustee in personal liability.

Section 6.06.     Limitation on Suits.
                  -------------------

         A Holder of a Note may pursue a remedy with  respect to this  Indenture
or the Notes only if:

                  (a) the Holder of a Note gives to the Trustee  written  notice
         of a continuing Event of Default;



                                      -36-


                  (b) the  Holders  of at least 25% in  principal  amount of the
         then outstanding  Notes make a written request to the Trustee to pursue
         the remedy;

                  (c) such  Holder of a Note or Holders of Notes  offer and,  if
         requested, provide to the Trustee indemnity satisfactory to the Trustee
         against any loss, liability or expense;

                  (d) the Trustee  does not comply  with the  request  within 60
         days after receipt of the request and the offer and, if requested,  the
         provision of indemnity; and

                  (e) during  such  60-day  period the  Holders of a majority in
         principal amount of the then outstanding  Notes do not give the Trustee
         a direction inconsistent with the request.

A Holder of a Note may not use this Indenture to prejudice the rights of another
Holder of a Note or to obtain a preference or priority over another  Holder of a
Note.

Section 6.07.     Rights of Holders of Notes To Receive Payment.
                  ---------------------------------------------

         Notwithstanding any other provision of this Indenture, the right of any
Holder of a Note to receive  payment of principal  of and  premium,  if any, and
interest on the Note, on or after the respective due dates expressed in the Note
(including  in connection  with an offer to purchase),  or to bring suit for the
enforcement of any such payment on or after such respective dates,  shall not be
impaired or affected without the consent of such Holder.

Section 6.08.     Collection Suit by Trustee.
                  --------------------------

         If an Event of Default  specified in Section  6.01(a) or (b) occurs and
is continuing, the Trustee is authorized to recover judgment in its own name and
as trustee of an express trust against ACC for the whole amount of principal of,
premium,  if any,  and  interest  remaining  unpaid on the Notes and interest on
overdue principal and, to the extent lawful, interest and such further amount as
shall be sufficient to cover the costs and expenses of collection, including the
reasonable  compensation,  expenses,  disbursements and advances of the Trustee,
its agents and counsel.

Section 6.09.     Trustee May File Proofs of Claim.
                  --------------------------------

         The Trustee is authorized to file such proofs of claim and other papers
or documents as may be necessary or advisable in order to have the claims of the
Trustee  (including  any  claim  for  the  reasonable  compensation,   expenses,
disbursements  and  advances of the  Trustee,  its agents and  counsel)  and the
Holders of the Notes allowed in any judicial proceedings relative to ACC (or any
other  obligor  upon the Notes),  its  creditors  or its  property  and shall be
entitled and  empowered to collect,  receive and  distribute  any money or other
property payable or deliverable on any such claims and any custodian in any such
judicial proceeding is hereby authorized by each Holder to make such payments to
the Trustee,  and in the event that the Trustee  shall  consent to the making of
such payments  directly to the Holders,  to pay to the Trustee any amount due to
it for the reasonable compensation,  expenses, disbursements and advances of the
Trustee,  its agents and counsel,  and any other  amounts due the Trustee  under
Section  7.07 hereof.  To the extent that the payment of any such  compensation,
expenses, disbursements and advances of the Trustee, its agents and counsel, and
any other amounts due the Trustee under Section 7.07 hereof out of the estate in
any such proceeding,  shall be denied for any reason,  payment of the same shall
be secured  by a Lien on,  and shall be paid out of, any and all  distributions,
dividends,  money,  securities  and other  properties  that the  Holders  may be
entitled to receive in such proceeding  whether in liquidation or under any plan
of reorganization or arrangement or otherwise. Nothing herein contained shall be
deemed to authorize the Trustee to authorize or consent to or accept or adopt on
behalf of any  Holder any plan of


                                      -37-


reorganization,  arrangement,  adjustment or composition  affecting the Notes or
the rights of any Holder,  or to authorize the Trustee to vote in respect of the
claim of any Holder in any such proceeding.

Section 6.10.     Priorities.
                  ----------

         If the Trustee  collects any money  pursuant to this Article,  it shall
pay out the money in the following order:

                  First:  to the Trustee,  its agents and  attorneys for amounts
         due under Section 7.07 hereof,  including  payment of all compensation,
         expense and liabilities incurred, and all advances made, by the Trustee
         and the costs and expenses of collection;

                  Second: to Holders for amounts due and unpaid on the Notes for
         principal,  premium, if any, and interest,  ratably, without preference
         or  priority of any kind,  according  to the amounts due and payable on
         the Notes for principal,  premium, if any, and interest,  respectively;
         and

                  Third:  to ACC  or  to such  party  as a  court  of  competent
         jurisdiction shall direct.

         The Trustee  may fix a record date and payment  date for any payment to
Holders of Notes pursuant to this Section 6.10.

Section 6.11.     Undertaking for Costs.
                  ---------------------

         In any suit for the  enforcement  of any  right or  remedy  under  this
Indenture  or in any suit against the Trustee for any action taken or omitted by
it as a Trustee,  a court in its  discretion may require the filing by any party
litigant  in the suit of an  undertaking  to pay the costs of the suit,  and the
court in its  discretion  may  assess  reasonable  costs,  including  reasonable
attorneys'  fees,  against any party litigant in the suit,  having due regard to
the merits and good faith of the claims or defenses made by the party  litigant.
This Section  does not apply to a suit by the  Trustee,  a suit by a Holder of a
Note  pursuant to Section 6.07 hereof,  or a suit by Holders of more than 10% in
principal amount of the then outstanding Notes.

                                    ARTICLE 7

                                     TRUSTEE

Section 7.01.     Duties of Trustee.
                  -----------------

         (a) If an Event of Default has occurred and is continuing,  the Trustee
shall exercise such of the rights and powers vested in it by this Indenture, and
use the same  degree of care and skill in its  exercise,  as a prudent man would
exercise or use under the circumstances in the conduct of his own affairs.

         (b) Except during the continuance of an Event of Default:

                  (i) the duties of the Trustee  shall be  determined  solely by
         the express  provisions of this  Indenture and the Trustee need perform
         only those duties that are specifically set forth in this Indenture and
         no others,  and no implied  covenants or obligations shall be read into
         this Indenture against the Trustee; and

                 (ii) in the  absence of bad faith on its part,  the Trustee may
         conclusively   rely,  as  to  the  truth  of  the  statements  and  the
         correctness of the opinions  expressed  therein,  upon  certificates or




                                      -38-


         opinions furnished to the Trustee and conforming to the requirements of
         this Indenture. However, the Trustee shall examine the certificates and
         opinions to determine  whether or not they conform to the  requirements
         of this Indenture.

         (c)  The  Trustee  may not be  relieved  from  liabilities  for its own
negligent  action,  its  own  negligent  failure  to  act,  or its  own  willful
misconduct, except that:

                  (i) this  paragraph does not limit the effect of paragraph (b)
         of this Section;

                 (ii) the Trustee  shall not be liable for any error of judgment
         made in good faith by a Responsible  Officer,  unless it is proved that
         the Trustee was negligent in ascertaining the pertinent facts; and

                (iii) the Trustee shall not be liable with respect to any action
         it takes or omits to take in good faith in accordance  with a direction
         received by it pursuant to Section 6.05 hereof.

         (d) Whether or not therein  expressly so provided,  every  provision of
this  Indenture  that in any way relates to the Trustee is subject to paragraphs
(a), (b) and (c) of this Section.

         (e) No provision of this Indenture  shall require the Trustee to expend
or risk its own  funds or incur any  liability.  The  Trustee  shall be under no
obligation to exercise any of its rights and powers under this  Indenture at the
request of any  Holders,  unless such Holder  shall have  offered to the Trustee
security  and  indemnity  satisfactory  to it  against  any loss,  liability  or
expense.

         (f) The Trustee shall not be liable for interest on any money  received
by it except as the Trustee may agree in writing  with ACC.  Money held in trust
by the Trustee  need not be  segregated  from other  funds  except to the extent
required by law.

Section 7.02.     Rights of Trustee.
                  -----------------

         (a) The Trustee may conclusively  rely upon any document believed by it
to be genuine and to have been signed or  presented  by the proper  Person.  The
Trustee need not investigate any fact or matter stated in the document.

         (b) Before the Trustee acts or refrains from acting,  it may require an
Officers' Certificate or an Opinion of Counsel or both. The Trustee shall not be
liable  for any action it takes or omits to take in good  faith in  reliance  on
such Officers'  Certificate or Opinion of Counsel.  The Trustee may consult with
counsel and the written  advice of such counsel or any Opinion of Counsel  shall
be full and complete  authorization  and protection from liability in respect of
any action  taken,  suffered  or omitted  by it  hereunder  in good faith and in
reliance thereon.

         (c) The Trustee may act through its  attorneys and agents and shall not
be responsible  for the misconduct or negligence of any agent appointed with due
care.

         (d) The Trustee shall not be liable for any action it takes or omits to
take in good faith that it  believes  to be  authorized  or within the rights or
powers conferred upon it by this Indenture.

         (e) Unless  otherwise  specifically  provided  in this  Indenture,  any
demand,  request,  direction or notice from ACC shall be sufficient if signed by
an Officer of ACC.


                                      -39-


         (f) The Trustee  shall be under no  obligation  to exercise  any of the
rights or powers  vested in it by this  Indenture at the request or direction of
any of the  Holders  unless  such  Holders  shall have  offered  to the  Trustee
reasonable  security or indemnity  against the costs,  expenses and  liabilities
that might be incurred by it in compliance with such request or direction.

Section 7.03.     Individual Rights of Trustee.
                  ----------------------------

         The  Trustee in its  individual  or any other  capacity  may become the
owner or pledgee of Notes and may  otherwise  deal with ACC or any  Affiliate of
ACC with the same rights it would have if it were not Trustee.  Any Agent may do
the same with like  rights  and  duties.  However,  the  Trustee  is  subject to
Sections 7.10 and 7.11 hereof.

Section 7.04.     Trustee's Disclaimer.
                  --------------------

         The Trustee shall not be responsible for and makes no representation as
to the  validity  or adequacy of this  Indenture  or the Notes,  it shall not be
accountable  for ACC's use of the  proceeds  from the Notes or any money paid to
ACC or upon  ACC's  direction  under  any  provision  hereof,  it  shall  not be
responsible for the use or application of any money received by any Paying Agent
other than the Trustee,  and it shall not be  responsible  for any  statement or
recital herein or any statement in the Notes or any other document in connection
with  the  sale of the  Notes  or  pursuant  to this  Indenture  other  than its
certificate of authentication.

Section 7.05.     Notice of Default.
                  -----------------

         If a Default or Event of Default  occurs and is continuing and if it is
known to the  Trustee,  the  Trustee  shall  mail to the  Holders of the Notes a
notice of the Default or Event of Default within 90 days after it occurs. Except
in the case of a  Default  or Event of  Default  in  payment  of  principal  of,
premium, if any, or interest on any Note, the Trustee may withhold the notice if
and so long as a committee of its Responsible  Officers in good faith determines
that withholding the notice is in the interests of the Holders of the Notes.

Section 7.06.     Reports by Trustee to Holders of the Notes.
                  ------------------------------------------

         Within 60 days after each May 15 beginning  with May 15  following  the
date of this Indenture, and for so long as Notes remain outstanding, the Trustee
shall mail to the Holders of the Notes a brief report dated as of such reporting
date that  complies  with TIA ss.  313(a) (but if no event  described in TIA ss.
313(a) has occurred  within the twelve months  preceding the reporting  date, no
report  need be  transmitted).  The  Trustee  also  shall  comply  with  TIA ss.
313(b)(2).  The Trustee  shall also  transmit by mail all reports as required by
TIA ss. 313(c).

         A copy of each  report at the time of its  mailing  to the  Holders  of
Notes  shall be mailed to ACC and filed with the SEC and each stock  exchange on
which the Notes are listed in accordance with TIA ss. 313(d). ACC shall promptly
notify the Trustee when the Notes are listed on any stock exchange.

Section 7.07.     Compensation and Indemnity.
                  --------------------------

         ACC shall pay to the Trustee from time to time reasonable  compensation
for its  acceptance  of this  Indenture  and services  hereunder.  To the extent
permitted by law, the Trustee's  compensation shall not be limited by any law on
compensation  of a trustee of an express trust.  ACC shall reimburse the Trustee
promptly upon request for all  reasonable  disbursements,  advances and expenses
incurred or made by it in addition to the  compensation  for its services.  Such
expenses shall include the reasonable  compensation,  disbursements and expenses
of the Trustee's agents and counsel.


                                      -40-


         ACC shall indemnify the Trustee against any and all losses, liabilities
or expenses  incurred by it arising out of or in connection  with the acceptance
or  administration  of its duties under this Indenture,  including the costs and
expenses of enforcing this Indenture  against ACC (including  this Section 7.07)
and defending itself against any claim (whether asserted by ACC or any Holder or
any other person) or liability in connection with the exercise or performance of
any of its  powers or duties  hereunder,  except to the  extent  any such  loss,
liability or expense may be  attributable  to its  negligence or bad faith.  The
Trustee shall notify ACC promptly of any claim for which it may seek  indemnity.
Failure by the Trustee to so notify ACC shall not relieve ACC of its obligations
hereunder.  ACC shall  defend the claim and the Trustee  shall  cooperate in the
defense.  The Trustee may have separate counsel and ACC shall pay the reasonable
fees and  expenses of such  counsel.  ACC need not pay for any  settlement  made
without its consent, which consent shall not be unreasonably withheld.

         The  obligations  of ACC under  this  Section  7.07 shall  survive  the
satisfaction and discharge of this Indenture.

         To secure ACC's payment obligations in this Section,  the Trustee shall
have a Lien prior to the Notes on all money or property held or collected by the
Trustee,  except that held in trust to pay  principal and interest on particular
Notes. Such Lien shall survive the satisfaction and discharge of this Indenture.

         When the Trustee incurs expenses or renders  services after an Event of
Default specified in Section 6.01(g) or (h) hereof occurs,  the expenses and the
compensation for the services (including the fees and expenses of its agents and
counsel)  are  intended  to  constitute  expenses  of  administration  under any
Bankruptcy Law.

         The Trustee shall comply with the  provisions  of TIA ss.  313(b)(2) to
the extent applicable.

Section 7.08.     Replacement of Trustee.
                  ----------------------

         A resignation or removal of the Trustee and  appointment of a successor
Trustee shall become effective only upon the successor  Trustee's  acceptance of
appointment as provided in this Section.

         The  Trustee may resign in writing at any time and be  discharged  from
the trust hereby created by so notifying ACC. The Holders of Notes of a majority
in principal amount of the then  outstanding  Notes may remove the Trustee by so
notifying the Trustee and ACC in writing. ACC may remove the Trustee if:

                  (a) the Trustee fails to comply with Section 7.10 hereof;

                  (b) the Trustee is adjudged a bankrupt or an  insolvent  or an
         order for  relief is entered  with  respect  to the  Trustee  under any
         Bankruptcy Law;

                  (c) a Custodian or public  officer takes charge of the Trustee
         or its property; or

                  (d) the Trustee becomes incapable of acting.

         If the  Trustee  resigns or is  removed  or if a vacancy  exists in the
office of  Trustee  for any  reason,  ACC  shall  promptly  appoint a  successor
Trustee.  Within one year after the successor Trustee takes office,  the Holders
of a majority in principal  amount of the then  outstanding  Notes may appoint a
successor Trustee to replace the successor Trustee appointed by ACC.


                                      -41-


         If a successor  Trustee  does not take office  within 60 days after the
retiring  Trustee  resigns or is  removed,  the  retiring  Trustee,  ACC, or the
Holders of at least 10% in principal  amount of the then  outstanding  Notes may
petition any court of competent  jurisdiction for the appointment of a successor
Trustee.

         If the  Trustee,  after  written  request  by any Holder who has been a
Holder of a Note for at least six months fails to comply with Section 7.10, such
Holder may petition any court of competent  jurisdiction  for the removal of the
Trustee and the appointment of a successor Trustee.

         A  successor  Trustee  shall  deliver  a  written   acceptance  of  its
appointment to the retiring  Trustee and to ACC.  Thereupon,  the resignation or
removal of the  retiring  Trustee  shall  become  effective,  and the  successor
Trustee  shall have all the rights,  powers and duties of the Trustee under this
Indenture.  The successor  Trustee shall mail a notice of its  succession to the
Holders of the Notes. The retiring Trustee shall promptly  transfer all property
held by it as Trustee to the successor Trustee;  provided that all sums owing to
the Trustee  hereunder  have been paid and subject to the Lien  provided  for in
Section 7.07 hereof. Notwithstanding replacement of the Trustee pursuant to this
Section 7.08, ACC's obligations under Section 7.07 hereof shall continue for the
benefit of the retiring Trustee.

Section 7.09.     Successor Trustee by Merger, Etc.
                  --------------------------------

         If the Trustee consolidates,  merges or converts into, or transfers all
or  substantially  all of its corporate trust business to, another  corporation,
the  successor  corporation  without  any  further  act  shall be the  successor
Trustee.

Section 7.10.     Eligibility, Disqualification.
                  -----------------------------

         There shall at all times be a Trustee  hereunder  that is a corporation
organized and doing  business  under the laws of the United States of America or
of any state  thereof that is authorized  under such laws to exercise  corporate
trustee power, that is subject to supervision or examination by federal or state
authorities  and that has a  combined  capital  and  surplus  of at least  $50.0
million as set forth in its most recent published annual report of condition.

         This   Indenture   shall  always  have  a  Trustee  who  satisfies  the
requirements of TIA ss.ss. 310(a)(1), (2) and (5). The Trustee is subject to TIA
ss. 310(b).

Section 7.11.     Preferential Collection of Claims Against the Company.
                  -----------------------------------------------------

         The  Trustee is  subject  to TIA ss.  31l(a),  excluding  any  creditor
relationship  listed in TIA ss.  311(b).  A  Trustee  who has  resigned  or been
removed shall be subject to TIA ss. 311(a) to the extent indicated therein.

                                    ARTICLE 8

                    LEGAL DEFEASANCE AND COVENANT DEFEASANCE

Section 8.01.     Option To Effect Legal Defeasance or Covenant Defeasance.
                  --------------------------------------------------------

         ACC may,  at the  option  of its  Board  of  Directors  evidenced  by a
resolution  set forth in an Officers'  Certificate,  at any time,  elect to have
either  Section  8.02 or 8.03  hereof be applied to all  outstanding  Notes upon
compliance with the conditions set forth below in this Article Eight.


                                      -42-


Section 8.02.     Legal Defeasance and Discharge.
                  ------------------------------

         Upon ACC's exercise under Section 8.01 hereof of the option  applicable
to this Section 8.02, ACC shall,  subject to the  satisfaction of the conditions
set forth in Section 8.04  hereof,  be deemed to have been  discharged  from its
obligations with respect to all outstanding Notes on the date the conditions set
forth below are satisfied (hereinafter,  "Legal Defeasance").  For this purpose,
Legal  Defeasance means that ACC shall be deemed to have paid and discharged the
entire Indebtedness represented by the outstanding Notes, which shall thereafter
be deemed to be  "outstanding"  only for the purposes of Section 8.05 hereof and
the other  Sections of this Indenture  referred to in (a) and (b) below,  and to
have  satisfied all its other  obligations  under such Notes and this  Indenture
(and the Trustee,  on demand of and at the expense of ACC,  shall execute proper
instruments  acknowledging the same), except for the following  provisions which
shall survive until otherwise terminated or discharged hereunder: (a) the rights
of Holders of outstanding  Notes to receive solely from the trust fund described
in Section 8.04 hereof, and as more fully set forth in such Section, payments in
respect of the  principal of,  premium,  if any, and interest on such Notes when
such  payments are due, (b) ACC's  obligations  with respect to such Notes under
Article 2 and Section 4.02 hereof, (c) the rights,  powers,  trusts,  duties and
immunities  of  the  Trustee  hereunder  and  ACC's  obligations  in  connection
therewith and (d) this Article  Eight.  Subject to compliance  with this Article
Eight, ACC may exercise its option under this Section 8.02  notwithstanding  the
prior exercise of its option under Section 8.03 hereof.

Section 8.03.     Covenant Defeasance.
                  -------------------

         Upon ACC's exercise under Section 8.01 hereof of the option  applicable
to this Section 8.03, ACC shall,  subject to the  satisfaction of the conditions
set forth in Section 8.04 hereof,  be released  from its  obligations  under the
covenants  contained in Sections 4.07,  4.08,  4.09,  4.10, 4.11, 4.12, 4.13 and
4.15  hereof  with  respect to the  outstanding  Notes on and after the date the
conditions set forth below are satisfied  (hereinafter,  "Covenant Defeasance"),
and the Notes shall thereafter be deemed not  "outstanding"  for the purposes of
any  direction,  waiver,  consent  or  declaration  or act of  Holders  (and the
consequences  of any  thereof)  in  connection  with such  covenants,  but shall
continue to be deemed  "outstanding" for all other purposes  hereunder (it being
understood  that  such  Notes  shall not be deemed  outstanding  for  accounting
purposes). For this purpose, Covenant Defeasance means that, with respect to the
outstanding  Notes,  ACC may omit to comply with and shall have no  liability in
respect of any term,  condition or  limitation  set forth in any such  covenant,
whether directly or indirectly,  by reason of any reference  elsewhere herein to
any such  covenant  or by reason of any  reference  in any such  covenant to any
other  provision  herein or in any other  document  and such  omission to comply
shall not constitute a Default or an Event of Default under Section 6.01 hereof,
but, except as specified  above,  the remainder of this Indenture and such Notes
shall be unaffected thereby. In addition, upon ACC's exercise under Section 8.01
hereof of the option  applicable  to this Section  8.03  hereof,  subject to the
satisfaction  of the  conditions  set forth in  Section  8.04  hereof,  Sections
6.01(c) through 6.01(f) hereof shall not constitute Events of Default.

Section 8.04.     Conditions to Legal or Covenant Defeasance.
                  ------------------------------------------

         The  following  shall be the  conditions to the  application  of either
Section 8.02 or 8.03 hereof to the outstanding Notes:

         In order to exercise either Legal Defeasance or Covenant Defeasance:

                  (a) ACC must irrevocably  deposit with the Trustee,  in trust,
         for  the  benefit  of the  Holders,  cash  in  United  States  dollars,
         non-callable  Government Securities,  or a combination thereof, in such
         amounts  as  will  be  sufficient,  in  the  opinion  of  a  nationally
         recognized firm of independent public accountants, to pay the principal
         of and premium,  if any, and interest on the  outstanding  Notes on the
         stated date for payment thereof or on the applicable  redemption  date,
         as the case may be;


                                      -43-


                  (b) in the case of an election under Section 8.02 hereof,  ACC
         shall have delivered to the Trustee an Opinion of Counsel in the United
         States reasonably acceptable to the Trustee confirming that (A) ACC has
         received  from, or there has been  published  by, the Internal  Revenue
         Service a ruling or (B)  since  the date of this  Indenture,  there has
         been a change in the applicable  federal income tax law, in either case
         to the effect that,  and based  thereon  such Opinion of Counsel  shall
         confirm that, the Holders of the  outstanding  Notes will not recognize
         income,  gain or loss for  federal  income tax  purposes as a result of
         such Legal  Defeasance and will be subject to federal income tax on the
         same  amounts,  in the same  manner and at the same times as would have
         been the case if such Legal Defeasance had not occurred;

                  (c) in the case of an election under Section 8.03 hereof,  ACC
         shall have delivered to the Trustee an Opinion of Counsel in the United
         States reasonably acceptable to the Trustee confirming that the Holders
         of the outstanding  Notes will not recognize  income,  gain or loss for
         federal income tax purposes as a result of such Covenant Defeasance and
         will be subject to federal income tax on the same amounts,  in the same
         manner  and at the  same  times  as  would  have  been the case if such
         Covenant Defeasance had not occurred;

                  (d) no Default or Event of Default  shall have occurred and be
         continuing  on the date of such deposit  (other than a Default or Event
         of Default  resulting  from the  incurrence  of  Indebtedness  all or a
         portion of the  proceeds  of which  will be used to  defease  the Notes
         pursuant to this Article Eight  concurrently  with such  incurrence) or
         insofar as Sections 6.01(g) or 6.01(h) hereof is concerned, at any time
         in the period ending on the 91st day after the date of deposit,  all as
         certified by ACC in an Officers' Certificate delivered to the Trustee;

                  (e) such Legal  Defeasance  or Covenant  Defeasance  shall not
         result in a breach or violation of, or constitute a default under,  any
         material  agreement or instrument  (other than this Indenture) to which
         ACC or any of its Restricted Subsidiaries is a party or by which ACC or
         any of its Restricted Subsidiaries is bound, all as certified by ACC in
         an Officers' Certificate delivered to the Trustee;

                  (f) ACC shall  have  delivered  to the  Trustee  an Opinion of
         Counsel to the effect that after the 91st day  following  the  deposit,
         the trust  funds will not be  subject  to the effect of any  applicable
         bankruptcy,  insolvency,   reorganization  or  similar  laws  affecting
         creditors' rights generally;

                  (g) ACC shall  have  delivered  to the  Trustee  an  Officers'
         Certificate  stating  that  the  deposit  was not  made by ACC with the
         intent of  preferring  the Holders  over any other  creditors of ACC or
         with the intent of defeating,  hindering,  delaying or  defrauding  any
         other creditors of ACC;

                  (h) ACC shall  have  delivered  to the  Trustee  an Opinion of
         Counsel to the effect  that the trust  funds will not be subject to the
         subordination provisions of the Indenture; and

                  (i) ACC shall  have  delivered  to the  Trustee  an  Officers'
         Certificate and an Opinion of Counsel, each stating that all conditions
         precedent  provided  for or  relating  to the Legal  Defeasance  or the
         Covenant Defeasance have been complied with.

Section 8.05.     Deposited Money and Government Securities To Be Held in Trust;
                  Other Miscellaneous Provisions.
                  --------------------------------------------------------------

         Subject to Section 8.06 hereof,  all money and non-callable  Government
securities (including the proceeds thereof) deposited with the Trustee (or other
qualifying  trustee,  collectively  for  purposes  of  this  Section  8.05,  the
"Trustee")  pursuant to Section 8.04 hereof in respect of the outstanding  Notes
shall be held in trust and


                                      -44-


applied by the Trustee, in accordance with the provisions of such Notes and this
Indenture,  to  the  payment,  either  directly  or  through  any  Paying  Agent
(including  ACC acting as Paying  Agent) as the  Trustee may  determine,  to the
Holders of such  Notes of all sums due and to become  due  thereon in respect of
principal,  premium, if any, and interest, but such money need not be segregated
from other funds except to the extent required by law.

         ACC shall pay and indemnify  the Trustee  against any tax, fee or other
charge  imposed  on or  assessed  against  the cash or  non-callable  Government
Securities  deposited  pursuant  to Section  8.04  hereof or the  principal  and
interest  received  in respect  thereof  other  than any such tax,  fee or other
charge which by law is for the account of the Holders of the outstanding Notes.

         Anything in this  Article  Eight to the contrary  notwithstanding,  the
Trustee  shall  deliver or pay to ACC from time to time upon the  request of ACC
any  money or  non-callable  Government  Securities  held by it as  provided  in
Section 8.04 hereof  which,  in the opinion of a nationally  recognized  firm of
independent  public  accountants  expressed in a written  certification  thereof
delivered  to the Trustee  (which may be the  opinion  delivered  under  Section
8.04(a) hereof), are in excess of the amount thereof that would then be required
to be deposited to effect an equivalent Legal Defeasance or Covenant Defeasance.

Section 8.06.     Repayment to the Company.
                  ------------------------

         Any money  deposited with the Trustee or any Paying Agent, or then held
by ACC,  in trust for the  payment of the  principal  of,  premium,  if any,  or
interest on any Note and remaining unclaimed for two years after such principal,
and premium, if any, or interest has become due and payable shall be paid to ACC
on its request or (if then held by ACC) shall be discharged from such trust; and
the Holder of such Note shall thereafter,  as a secured  creditor,  look only to
ACC for payment  thereof,  and all liability of the Trustee or such Paying Agent
with respect to such trust money,  and all liability of ACC as trustee  thereof,
shall thereupon cease; provided, however, that the Trustee or such Paying Agent,
before  being  required  to make any such  repayment,  may at the expense of ACC
cause to be published  once,  in the New York Times and The Wall Street  Journal
(national  edition),  notice that such money remains unclaimed and that, after a
date  specified  therein,  which shall not be less than 30 days from the date of
such  notification  or  publication,  any  unclaimed  balance of such money then
remaining will be repaid to ACC.

Section 8.07.     Reinstatement.
                  -------------

         If the  Trustee or Paying  Agent is unable to apply any  United  States
dollars or non-callable  Government  Securities in accordance with Section 8.02,
8.03 or 8.04  hereof,  as the case may be, by reason of any order or judgment of
any  court  or  governmental  authority  enjoining,   restraining  or  otherwise
prohibiting such  application,  then ACC's  obligations under this Indenture and
the Notes shall be revived  and  reinstated  as though no deposit  had  occurred
pursuant to Section 8.02,  8.03 or 8.04 hereof until such time as the Trustee or
Paying  Agent is permitted  to apply all such money in  accordance  with Section
8.02, 8.03 or 8.04 hereof, as the case may be; provided,  however,  that, if ACC
makes any  payment of  principal  of,  premium,  if any, or interest on any Note
following the  reinstatement of its obligations,  ACC shall be subrogated to the
rights of the Holders of such Notes to receive  such payment from the money held
by the Trustee or Paying Agent.

                                      -45-


                                    ARTICLE 9

                        AMENDMENT, SUPPLEMENT AND WAIVER

Section 9.01.     Without Consent of Holders.
                  --------------------------

         Notwithstanding Section 9.02 of this Indenture, ACC and the Trustee may
amend or  supplement  this  Indenture  or the Notes  without  the consent of any
Holder:

                  (a) to cure any ambiguity, defect or inconsistency;

                  (b) to provide for the assumption of ACC's  obligations to the
         Holders of the Notes in the case of a merger or consolidation  pursuant
         to Article Five hereof;

                  (c) to provide for  uncertificated  Notes in addition to or in
         place of certificated Notes;

                  (d) to make any  change  that  would  provide  any  additional
         rights or benefits to the Holders the Notes or that does not  adversely
         affect the legal rights hereunder of any Holder of the Note; or

                  (e) to comply with  requirements of the SEC in order to effect
         or maintain the qualification of this Indenture under the TIA.

         Upon the request of ACC  accompanied  by a  resolution  of its Board of
Directors  authorizing  the  execution  of  any  such  amended  or  supplemental
Indenture, and upon receipt by the Trustee of the documents described in Section
9.06 hereof,  the Trustee shall join with ACC in the execution of any amended or
supplemental  Indenture  authorized or permitted by the terms of this  Indenture
and to make any further  appropriate  agreements  and  stipulations  that may be
therein  contained,  but the Trustee  shall not be  obligated to enter into such
amended  or  supplemental  Indenture  that  affects  its own  rights,  duties or
immunities under this Indenture or otherwise.

Section 9.02.     With Consent of Holders of Notes.
                  --------------------------------

         Except as provided  below in this Section 9.02, ACC and the Trustee may
amend or supplement  this Indenture and the Notes may be amended or supplemented
with the consent of the Holders of at least a majority  in  principal  amount of
the Notes then  outstanding  (including  consents  obtained in connection with a
purchase of or tender offer or exchange  offer for the Notes),  and,  subject to
Sections 6.04 and 6.07 hereof,  any existing  Default or Event of Default (other
than a Default or Event of default in the payment of the principal of,  premium,
if any, or interest on the Notes,  except a payment  default  resulting  from an
acceleration  that has been  rescinded) or compliance with any provision of this
Indenture  or the Notes may be  waived  with the  consent  of the  Holders  of a
majority in principal amount of the then outstanding  Notes (including  consents
obtained in  connection  with a purchase of or a tender offer or exchange  offer
for the Notes).

         Upon the request of ACC  accompanied  by a  resolution  of its Board of
Directors  authorizing  the  execution  of  any  such  amended  or  supplemental
Indenture,  and upon the filing with the Trustee of evidence satisfactory to the
Trustee of the  consent of the  Holders as  aforesaid,  and upon  receipt by the
Trustee of the  documents  described in Section 9.06 hereof,  the Trustee  shall
join with ACC in the execution of such amended or supplemental  Indenture unless
such amended or supplemental  Indenture affects the Trustee's own rights, duties
or immunities  under this Indenture or otherwise,  in which case the Trustee may
in its  discretion,  but shall not be  obligated  to, enter into such amended or
supplemental Indenture.


                                      -46-


         It shall not be  necessary  for the consent of the  Holders  under this
Section 9.02 to approve the particular form of any proposed amendment or waiver,
but it shall be sufficient if such consent approves the substance thereof.

         After an  amendment,  supplement  or waiver under this Section  becomes
effective,  ACC shall mail to the Holders of each Note affected thereby a notice
briefly  describing the amendment,  supplement or waiver.  Any failure of ACC to
mail such notice, or any defect therein,  shall not, however,  in any way impair
or affect the validity of any such amended or supplemental  Indenture or waiver.
Subject to Sections 6.04 and 6.07 hereof, the Holders of a majority in aggregate
principal  amount of the  Notes  then  outstanding  may  waive  compliance  in a
particular  instance by ACC with any  provision of this  Indenture or the Notes.
However,  without the consent of each Holder affected, an amendment,  supplement
or waiver may not (with respect to any Notes held by a nonconsenting Holder):

                  (a) reduce the  principal  amount of Notes whose  Holders must
         consent to an amendment, supplement or waiver;

                  (b)  reduce  the rate of or  extend  the time for  payment  of
         interest, including default interest, on any Note;

                  (c) reduce the  principal  of or extend the fixed  maturity of
         any Note or alter or waive any of the  provisions  with  respect to the
         redemption of the Notes (including the purchase price specified for any
         redemption of the Notes pursuant to Sections 4.10 and 4.15 hereof);

                  (d) make any Note  payable in money  other than that stated in
         the Notes;

                  (e)  make  any  change  in the  provisions  of this  Indenture
         relating to waivers of past  Defaults or the rights of Holders of Notes
         to receive payments of principal of or interest on the Notes;

                  (f) make any change in Section 6.04 or 6.07  hereof or  in the
         foregoing amendment and waiver provisions;

                  (g)  make  any  change in  Article 11  hereof  that  adversely
         affects the rights of any Holders; or

                  (h) waive a Default  or Event of  Default  in the  payment  of
         principal  of or premium,  if any,  or interest on the Notes  (except a
         rescission  of  acceleration  of the Notes by the Holders of at least a
         majority in aggregate  principal amount of the then  outstanding  Notes
         and  a  waiver  of  the  payment   default  that   resulted  from  such
         acceleration).

Section 9.03.     Compliance with Trust Indenture Act.
                  -----------------------------------

         Every  amendment or supplement to this  Indenture or the Notes shall be
set forth in an amended or supplemental  Indenture that complies with the TIA as
then in effect.

Section 9.04.     Revocation and Effect of Consents.
                  ---------------------------------

         Until an amendment,  supplement or waiver becomes effective,  a consent
to it by a Holder is a  continuing  consent by the  Holder and every  subsequent
Holder  of a Note or  portion  of a Note  that  evidences  the same  debt as the
consenting  Holder's  Note,  even if  notation of the consent is not made on any
Note. However, any such Holder or subsequent Holder may revoke the consent as to
its Note if the Trustee  receives  written notice of


                                      -47-


revocation  before  the  date  the  waiver,   supplement  or  amendment  becomes
effective.  An amendment,  supplement or waiver becomes  effective in accordance
with its terms and thereafter binds every Holder.

         ACC may fix a record date for determining which Holders must consent to
such  amendment or waiver.  If ACC fixes a record date, the record date shall be
fixed  at (i) the  later  of 30 days  prior to the  first  solicitation  of such
consent or the date of the most recent list of Holders  furnished to the Trustee
prior to such  solicitation  pursuant to Section 2.05 or (ii) such other date as
ACC shall lawfully designate.

Section 9.05.     Notation on or Exchange of Notes.
                  --------------------------------

         The  Trustee  may place an  appropriate  notation  about an  amendment,
supplement or waiver on any Note thereafter  authenticated.  ACC in exchange for
all Notes may issue and the Trustee  shall  authenticate  new Notes that reflect
the amendment, supplement or waiver.

         Failure to make the appropriate  notation or issue a new Note shall not
affect the validity and effect of such amendment, supplement or waiver.

Section 9.06.     Trustee To Sign Amendments, Etc.
                  -------------------------------

         The Trustee shall sign any amended or supplemental Indenture authorized
pursuant to this Article 9 if the  amendment or  supplement  does not  adversely
affect the rights, duties, liabilities or immunities of the Trustee. ACC may not
sign an  amendment  or  supplemental  Indenture  until  the  Board of  Directors
approves it. In executing  any amended or  supplemental  Indenture,  the Trustee
shall be  entitled  to receive,  and  (subject  to Section  7.01) shall be fully
protected in relying  upon, an Officers'  Certificate  and an Opinion of Counsel
stating  that  the  execution  of such  amended  or  supplemental  Indenture  is
authorized or permitted by this Indenture.

                                   ARTICLE 10

                           SATISFACTION AND DISCHARGE

Section 10.01.    Satisfaction and Discharge.
                  --------------------------

         This  Indenture  will be  discharged  and will  cease to be of  further
effect (except as set forth below) and the Trustee, at the expense of ACC, shall
execute  proper  instruments  acknowledging  satisfaction  and discharge of this
Indenture when:

                  (1) either:

                           (a)  all  the  Notes  theretofore  authenticated  and
                  delivered  (except lost,  stolen or destroyed Notes which have
                  been  replaced or paid as  provided in Section  2.07 and Notes
                  for whose  payment  money has  theretofore  been  deposited in
                  trust or  segregated  and held in trust by ACC and  thereafter
                  repaid  to  ACC or  discharged  from  such  trust)  have  been
                  delivered to the Trustee for cancellation; or

                           (b)  all  Notes  not  theretofore  delivered  to  the
                  Trustee for  cancellation  have become due and payable and ACC
                  has  irrevocably  deposited or caused to be deposited with the
                  Trustee funds in an amount sufficient to pay and discharge the
                  entire Indebtedness on the Notes not theretofore  delivered to
                  the Trustee for  cancellation,  for principal of, premium,  if
                  any, and interest on the Notes to the date of deposit together
                  with irrevocable  instructions  from


                                      -48-


                  ACC  directing  the Trustee to apply such funds to the payment
                  thereof at maturity or redemption, as the case may be;

                  (2) ACC has paid all other sums payable  under this  Indenture
         by ACC; and

                  (3) ACC has delivered to the Trustee an Officers'  Certificate
         and an Opinion of Counsel  stating that all conditions  precedent under
         this  Indenture  relating to the  satisfaction  and  discharge  of this
         Indenture have been complied with.

         Notwithstanding the satisfaction and discharge of this Indenture, ACC's
obligations in Sections 2.03, 2.04, 2.06, 2.07, 2.11, 7.07, 7.08,  12.02,  12.03
and 12.04,  and the Trustee's and Paying  Agent's  obligations in Section 10.02,
shall survive until the Notes are no longer outstanding.  Thereafter, only ACC's
obligations in Section 7.07 shall survive.

Section 10.02.    Application of Trust Money.
                  --------------------------

         All money deposited with the Trustee pursuant to Section 10.01 shall be
held in trust  and,  at the  written  direction  of ACC,  be  invested  prior to
maturity in Government Securities, and applied by the Trustee in accordance with
the provisions of the Notes and this Indenture,  to the payment, either directly
or  through  any Paying  Agent as the  Trustee  may  determine,  to the  Persons
entitled  thereto,  of the principal (and premium,  if any) and interest for the
payment of which money has been deposited with the Trustee,  but such money need
not be segregated from other funds except to the extent required by law.

                                   ARTICLE 11

                                  SUBORDINATION

Section 11.01.    Agreement To Subordinate.
                  ------------------------

         ACC  agrees,  and each  Holder by  accepting  a Note  agrees,  that the
Indebtedness  evidenced by the Note is subordinated in right of payment,  to the
extent and in the manner provided in this Article,  to the prior payment in full
of all Senior Debt (whether outstanding on the date hereof or hereafter created,
incurred, assumed or guaranteed),  and that the subordination is for the benefit
of the holders of Senior Debt.

Section 11.02.    Certain Definitions.
                  -------------------

         "Designated  Senior  Debt" means (i) so long as any Senior Bank Debt is
outstanding,  the Senior Bank Debt and (ii)  thereafter,  any other  Senior Debt
permitted hereunder,  the principal amount of which is $25.0 million or more and
that has been designated by ACC as "Designated Senior Debt."

         "Representative" means the indenture trustee or other trustee, agent or
representative for any Senior Debt.

         "Senior  Bank Debt" means the Debt now or hereafter  outstanding  under
the Senior Credit Facility, as such agreement may be restated,  further amended,
supplemented  or  otherwise  modified or replaced  from time to time  hereafter,
together with any refunding or  replacement of such Debt, to the extent that any
such Debt was permitted by this Indenture to be incurred.

         "Senior Debt" means (a) the Senior Bank Debt, (b) all  additional  Debt
that is permitted  under this Indenture that is not by its terms pari passu with
or  subordinated  to the Notes,  (c) all  Obligations of ACC with


                                      -49-


respect to the foregoing clauses (a) and (b), including  post-petition  interest
and  (d)  all  (including  all  subsequent)  renewals,  extensions,  amendments,
refinancings,  repurchases  or  redemptions,   modifications,   replacements  or
refundings  thereof (whether or not coincident  therewith) that are permitted by
this  Indenture.  Notwithstanding  anything to the  contrary  in the  foregoing,
Senior  Debt  shall  not  include  (i) any Debt of ACC to any of its  Restricted
Subsidiaries,  (ii) any Debt  incurred for the purchase of goods or materials or
for services  obtained in the ordinary  course of business  (other than with the
proceeds of borrowings  from banks or other financial  institutions),  (iii) any
Debt incurred in violation of this Indenture or (iv) the 8.875% Notes and, until
the date of redemption or purchase thereof,  the 9 3/4% Debentures,  which shall
rank pari passu in right of payment with the Notes.

         A distribution  may consist of cash,  securities or other property,  by
set-off or otherwise.

Section 11.03.    Liquidation; Dissolution; Bankruptcy.
                  ------------------------------------

         Upon  any  distribution  to  creditors  of  ACC  in  a  liquidation  or
dissolution of ACC or in a bankruptcy, reorganization,  insolvency, receivership
or similar proceeding relating to ACC or its property,  in an assignment for the
benefit of creditors or any marshalling of ACC's assets and liabilities:

                  (1)  holders  of Senior  Debt  shall be  entitled  to  receive
         irrevocable  payment  in full in  cash or Cash  Equivalents  reasonably
         satisfactory  to such holders of all Obligations due in respect of such
         Senior Debt  (including  interest  after the  commencement  of any such
         proceeding  at the  rate  specified  in  the  applicable  Senior  Debt,
         regardless  of whether such  post-petition  interest is allowed in such
         proceeding)  before  Holders  shall be  entitled to receive any payment
         with respect to the Notes  (except that Holders may receive  securities
         that are  subordinated  to at least the same extent as the Notes to (a)
         Senior Debt and (b) any  securities  issued in exchange for Senior Debt
         that have a maturity no earlier than that of the Notes); and

                  (2) until all  Obligations  with  respect  to Senior  Debt (as
         provided in subsection (1) above) are irrevocably  paid in full in cash
         or Cash Equivalents  reasonably  satisfactory to such holders of Senior
         Debt, any  distribution to which Holders would be entitled but for this
         Article  shall be made to holders of Senior Debt  (except  that Holders
         may  receive  securities  that are  subordinated  to at least  the same
         extent as the Notes to (a) Senior Debt and (b) any securities issued in
         exchange  for Senior Debt that have a maturity no earlier  than that of
         the Notes), as their interests may appear.

Section 11.04.    Default on Designated Senior Debt.
                  ---------------------------------

         ACC may not make any  payment  or  distribution  to the  Trustee or any
Holder in respect of  Obligations  with respect to the Notes and may not acquire
from the  Trustee  or any  Holder  any Notes for cash or  property  (other  than
securities that are subordinated to at least the same extent as the Notes to (a)
Senior Debt and (b) any  securities  issued in exchange for Senior Debt and that
have a maturity no earlier than that of the Notes) until all principal and other
Obligations  with  respect to the Senior  Debt have been paid in full in cash or
Cash Equivalents reasonably satisfactory to such Holders if:

                  (x) a default in the  payment of any  principal,  interest  or
         other  Obligations with respect to Designated Senior Debt occurs and is
         continuing  beyond  any  applicable  grace  period  in  the  agreement,
         indenture or other document governing such Designated Senior Debt; or

                  (y) a default,  other than a payment  default,  on  Designated
         Senior Debt occurs and is continuing  that then permits  holders of the
         Designated  Senior  Debt to  accelerate  its  maturity  and the Trustee
         receives a notice of the default (a "Payment Blockage Notice") from ACC
         or a Representative who


                                      -50-


         may give it. If the Trustee  receives any such Payment Blockage Notice,
         no subsequent  Payment  Blockage Notice shall be effective for purposes
         of this  Section  unless and until at least 360 days shall have elapsed
         since the  effectiveness  of the  immediately  prior  Payment  Blockage
         Notice.  No  non-payment  default that existed or was continuing on the
         date of delivery of any Payment  Blockage  Notice to the Trustee  shall
         be, or be made, the basis for a subsequent Payment Blockage Notice.

         ACC may and shall resume  payments on and  distributions  in respect of
the Notes and may acquire them upon the earlier of:

                  (1) the date upon which the default is cured or waived, or

                  (2) in the case of a default  referred to in Section  11.04(y)
         hereof,  179 days pass after notice is received if the maturity of such
         Designated Senior Debt has not been accelerated,

if this Article  otherwise  permits the payment,  distribution or acquisition at
the time of such payment or acquisition.

Section 11.05.    Acceleration of Notes.
                  ---------------------

         If payment of the Notes is accelerated  because of an Event of Default,
ACC shall promptly notify holders of Senior Debt of the acceleration.

Section 11.06.    When Distribution Must Be Paid Over.
                  -----------------------------------

         In the event that the Trustee or any Holder receives any payment of any
Obligations with respect to the Notes at a time when the Trustee or such Holder,
as applicable,  has actual  knowledge that such payment is prohibited by Section
11.04 hereof, such payment shall be held by the Trustee or such Holder, in trust
for the benefit of and, upon written  request,  shall be paid forthwith over and
delivered to, the holders of Senior Debt as their  interests may appear or their
Representative under the indenture or other agreement (if any) pursuant to which
Senior Debt may have been issued, as their respective  interests may appear, for
application  to the  payment of all  Obligations  with  respect  to Senior  Debt
remaining  unpaid to the extent  necessary  to pay such  Obligations  in full in
accordance  with their terms,  after giving effect to any concurrent  payment or
distribution to or for the holders of Senior Debt.

         With respect to the holders of Senior Debt,  the Trustee  undertakes to
perform only such obligations on the part of the Trustee as are specifically set
forth in this Article 11, and no implied  covenants or obligations  with respect
to the  holders of Senior  Debt shall be read into this  Indenture  against  the
Trustee.  The  Trustee  shall  not be deemed  to owe any  fiduciary  duty to the
holders  of Senior  Debt,  and shall  not be liable to any such  holders  if the
Trustee  shall pay over or  distribute  to or on behalf of Holders or ACC or any
other  Person  money or assets  to which any  holders  of Senior  Debt  shall be
entitled  by virtue of this  Article  11,  except if such  payment  is made as a
result of the willful misconduct or gross negligence of the Trustee.

Section 11.07.    Notice by Company.
                  -----------------

         ACC shall promptly notify the Trustee and the Paying Agent of any facts
known to ACC that would cause a payment of any  Obligations  with respect to the
Notes to violate this Article,  but failure to give such notice shall not affect
the subordination of the Notes to the Senior Debt as provided in this Article.


                                      -51-


Section 11.08.    Subrogation.
                  -----------

         After  all  Senior  Debt  is  irrevocably  paid in full in cash or Cash
Equivalents  reasonably  satisfactory to the holders thereof and until the Notes
are paid in full,  Holders  shall be  subrogated  (equally  and ratably with all
other Indebtedness pari passu with the Notes) to the rights of holders of Senior
Debt to receive  distributions  applicable  to Senior  Debt to the  extent  that
distributions  otherwise payable to the Holders have been applied to the payment
of Senior Debt. A distribution made under this Article to holders of Senior Debt
that  otherwise  would  have been made to Holders  is not,  as  between  ACC and
Holders, a payment by ACC on the Notes.

Section 11.09.    Relative Rights.
                  ---------------

         This  Article  defines  the  relative  rights of Holders and holders of
Senior Debt. Nothing in this Indenture shall:

                  (1) impair, as between ACC and Holders, the obligation of ACC,
         which is absolute and  unconditional,  to pay principal of and interest
         on the Notes in accordance with their terms;

                  (2) affect the relative rights of Holders and creditors of ACC
         other than their rights in relation to holders of Senior Debt; or

                  (3)  prevent the  Trustee or any Holder  from  exercising  its
         available  remedies upon a Default or Event of Default,  subject to the
         rights of holders  and owners of Senior  Debt to receive  distributions
         and payments otherwise payable to Holders.

         If ACC fails because of this Article to pay principal of or interest on
a Note on the due date, the failure is still a Default or Event of Default.

Section 11.10.    Subordination May Not Be Impaired by Company.
                  --------------------------------------------

         No right of any holder of Senior Debt to enforce the  subordination  of
the Debt  evidenced  by the Notes shall be impaired by any act or failure to act
by ACC or any Holder or by the  failure of ACC or any Holder to comply with this
Indenture.

Section 11.11.    Distribution or Notice to Representative.
                  ----------------------------------------

         Whenever a  distribution  is to be made or a notice given to holders of
Senior  Debt,  the  distribution  may be made  and the  notice  given  to  their
Representative.

         Upon any payment or  distribution  of assets of ACC referred to in this
Article 11, the Trustee and the Holders shall be entitled to rely upon any order
or decree made by any court of competent jurisdiction or upon any certificate of
such  Representative  or of the  liquidating  trustee  or agent or other  Person
making any  distribution  to the  Trustee or to the  Holders  for the purpose of
ascertaining  the Persons  entitled to  participate  in such  distribution,  the
holders  of Senior  Debt and other Debt of ACC,  the  amount  thereof or payable
thereon,  the amount or amounts paid or distributed  thereon and all other facts
pertinent thereto or to this Article 11.

Section 11.12.    Rights of Trustee and Paying Agent.
                  ----------------------------------

         Notwithstanding  the  provisions  of  this  Article  11  or  any  other
provision of this Indenture,  the Trustee shall not be charged with knowledge of
the  existence  of any facts that would  prohibit  the making of any  payment or
distribution  by the Trustee,  and the Trustee and the Paying Agent may continue
to make  payments on


                                      -52-


the Notes,  unless the Trustee shall have received at its Corporate Trust Office
at least five Business Days prior to the date of such payment  written notice of
facts that would cause the payment of any Obligations  with respect to the Notes
to violate  this  Article.  Only ACC or a  Representative  may give the  notice.
Nothing in this  Article 11 shall  impair  the  claims of, or  payments  to, the
Trustee under or pursuant to Section 7.07 hereof.

         The Trustee in its  individual  or any other  capacity  may hold Senior
Debt with the same rights it would have if it were not Trustee. Any Agent may do
the same with like rights.

Section 11.13.    Authorization To Effect Subordination.
                  -------------------------------------

         Each Holder of a Note by the Holder's acceptance thereof authorizes and
directs  the  Trustee  on the  Holder's  behalf  to take  such  action as may be
necessary or  appropriate to effectuate  the  subordination  as provided in this
Article 11, and appoints the Trustee to act as the Holder's attorney-in-fact for
any and all such purposes.  If the Trustee does not file a proper proof of claim
or proof of debt in the form required in any  proceeding  referred to in Section
6.09  hereof at least 30 days  before  the  expiration  of the time to file such
claim,  the agents of the lenders  under the Senior  Credit  Facility are hereby
authorized to file an appropriate  claim for and on behalf of the Holders of the
Notes.

Section 11.14.    Amendments.
                  ----------

         The  provisions  of this  Article 11 shall not be  amended or  modified
without the written consent of the holders of all Senior Debt.

                                   ARTICLE 12

                                  MISCELLANEOUS

Section 12.01.    Trust Indenture Act Controls.
                  ----------------------------

         If provision of this Indenture limits,  qualifies or conflicts with the
duties imposed by TIA ss. 318(c), the imposed duties shall control.

Section 12.02.    Notices.
                  -------

         Any notice or communication by ACC or the Trustee to the others is duly
given if in  writing  and  delivered  in person or  mailed by first  class  mail
(registered  or  certified,  return  receipt  requested),  telex,  telecopier or
overnight air courier guaranteeing next day delivery, to the others' address:

         If to Allbritton Communications Company:

                  Allbritton Communications Company
                  808 Seventeenth Street, NW, Suite 300
                  Washington, D.C.  20006
                  Telecopier No.:  (202) 530-0318
                  Telephone No.:  (202) 789-2130
                  Attention:  Stephen P. Gibson


                                      -53-


         With a copy to:

                  Fulbright & Jaworski L.L.P.
                  801 Pennsylvania Avenue, NW, Suite 400
                  Washington, D.C.  20004
                  Telecopier No.:  (202) 662-4643
                  Telephone No.:  (202) 662-4678
                  Attention:  Marilyn Mooney, Esq.

         If to the Trustee:

                  State Street Bank and Trust Company
                  2 Avenue de Lafayette
                  Boston, MA  02111
                  Telecopier No.:  (617) 662-1464
                  Telephone No.:  (617) 662-1728
                  Attention:  Corporate Trust Administration
                              (Reference - Allbritton)

         ACC or the Trustee,  by notice to the others, may designate  additional
or different addresses for subsequent notices or communications.

         All notices and communications (other than those sent to Holders) shall
be deemed to have been duly given:  at the time delivered by hand, if personally
delivered;  five  Business  Days  after  being  deposited  in the mail,  postage
prepaid, if mailed; when answered back, if telexed;  when receipt  acknowledged,
if telecopied;  and the next Business Day after timely  delivery to the courier,
if sent by overnight air courier guaranteeing next day delivery.

         Any notice or  communication to a Holder shall be mailed by first class
mail,  certified or registered,  return receipt  requested,  or by overnight air
courier guaranteeing next day delivery to its address shown on the register kept
by the  Registrar.  Any notice or  communication  shall also be so mailed to any
Person  described in TIA ss. 313(c),  to the extent required by the TIA. Failure
to mail a notice  or  communication  to a Holder  or any  defect in it shall not
affect its sufficiency with respect to other Holders.

         If a notice or  communication  is mailed in the manner  provided  above
within the time  prescribed,  it is duly  given,  whether  or not the  addressee
receives it.

         If ACC mails a notice or communication to Holders, it shall mail a copy
to the Trustee and each Agent at the same time.

Section 12.03.    Communication by Holders of Notes with Other Holders of Notes.
                  -------------------------------------------------------------

         Holders may  communicate  pursuant to TIA ss. 312(b) with other Holders
with  respect to their  rights  under this  Indenture  or the  Notes.  ACC,  the
Trustee,  the  Registrar  and anyone else shall have the  protection  of TIA ss.
312(c).

Section 12.04.    Certificate of Opinion as to Conditions Precedent.
                  -------------------------------------------------

         Upon any  request  or  application  by ACC to the  Trustee  to take any
action under this Indenture, ACC shall furnish to the Trustee:


                                      -54-


                  (a) an Officers'  Certificate in form and substance reasonably
         satisfactory  to the Trustee  (which shall include the  statements  set
         forth in Section  12.05  hereof)  stating  that,  in the opinion of the
         signers, all conditions  precedent and covenants,  if any, provided for
         in this Indenture  relating to the proposed action have been satisfied;
         and

                  (b) an Opinion of  Counsel  in form and  substance  reasonably
         satisfactory  to the Trustee  (which shall include the  statements  set
         forth in Section  12.05  hereof)  stating  that, in the opinion of such
         counsel,   all  such  conditions  precedent  and  covenants  have  been
         satisfied.

Section 12.05.    Statements Required in Certificate or Opinion.
                  ---------------------------------------------

         Each certificate or opinion with respect to compliance with a condition
or covenant  provided for in this Indenture  (other than a certificate  provided
pursuant  to TIA ss.  314(a)(4))  shall  comply with the  provisions  of TIA ss.
314(e) and shall include:

                  (a) a statement  that the Person  making such  certificate  or
         opinion has read such covenant or condition;

                  (b) a  brief  statement  as to the  nature  and  scope  of the
         examination  or  investigation  upon which the  statements  or opinions
         contained in such certificate or opinion are based;

                  (c) a statement that, in the opinion of such Person, he or she
         has made such  examination or  investigation  as is necessary to enable
         him to express an informed  opinion as to whether or not such  covenant
         or condition has been satisfied; and

                  (d) a  statement  as to whether or not, in the opinion of such
         Person, such condition or covenant has been satisfied.

Section 12.06.    Rules by Trustee and Agents.
                  ---------------------------

         The Trustee may make reasonable  rules for action by or at a meeting of
Holders.  The  Registrar  or  Paying  Agent  may make  reasonable  rules and set
reasonable requirements for its functions.

Section 12.07.    No Personal Liability of Directors, Officers, Employees
                  and Stockholders.
                  -------------------------------------------------------

         No past, present or future director, officer, employee, incorporator or
stockholder or other Affiliate of ACC, as such, shall have any liability for any
obligations of ACC under the Notes and this Indenture or for any claim based on,
in respect of, or by reason of, such obligations or their creation.  Each Holder
by  accepting  a Note waives and  releases  all such  liability.  The waiver and
release are part of the consideration for issuance of the Notes.

Section 12.08.    Governing Law.
                  -------------

         THE  INTERNAL  LAW OF THE STATE OF NEW YORK SHALL GOVERN AND BE USED TO
CONSTRUE THIS INDENTURE AND THE NOTES.


                                      -55-


Section 12.09.    No Adverse Interpretation of Other Agreements.
                  ---------------------------------------------

         This Indenture may not be used to interpret any other  indenture,  loan
or debt agreement of ACC or its  Subsidiaries  or of any other Person.  Any such
indenture, loan or debt agreement may not be used to interpret this Indenture.

Section 12.10.    Successors.
                  ----------

         All  agreements  of ACC in this  Indenture and the Notes shall bind its
successors.  All  agreements  of the  Trustee in this  Indenture  shall bind its
successors.

Section 12.11.    Severability.
                  ------------

         In case  any  provision  in this  Indenture  or in the  Notes  shall be
invalid, illegal or unenforceable,  the validity, legality and enforceability of
the remaining provisions shall not in any way be affected or impaired thereby.

Section 12.12.    Counterpart Originals.
                  ---------------------

         The  parties  may sign any  number of copies  of this  Indenture.  Each
signed copy shall be an original,  but all of them  together  represent the same
agreement.

Section 12.13.    Table of Contents, Headings, Etc.
                  --------------------------------

         The  Table of  Contents,  Cross-Reference  Table  and  headings  of the
Articles and Sections of this  Indenture  have been inserted for  convenience of
reference  only,  are not to be considered a part of this Indenture and shall in
no way modify or restrict any of the terms or provisions hereof.

                         [Signatures on following page]


                                      -56-



                                   SIGNATURES


Dated as of December 20, 2002             ALLBRITTON COMMUNICATIONS COMPANY,
                                          Issuer


                                          By: /s/ Stephen P. Gibson
                                              Name:    Stephen P. Gibson
                                              Title:   Senior Vice President-
                                                       Chief Financial Officer


                                          (SEAL)


Dated as of December 20, 2002             STATE STREET BANK AND TRUST COMPANY,
                                          Trustee


                                          By: /s/Earl W. Dennison
                                              Name:    Earl W. Dennisson
                                              Title:   Vice President