SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                    FORM 10-Q
             QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
                         SECURITIES EXCHANGE ACT OF 1934

                  For the quarterly period ended June 30, 1996
                         Commission file number 0-23044

                      AMERICAN MOBILE SATELLITE CORPORATION
             (Exact name of registrant as specified in its charter)

                DELAWARE                           93-0976127
          (State or other                      (I.R.S. Employer
           jurisdiction of                      Identification No.)
           incorporation or
           organization)

      10802 Parkridge Boulevard
              Reston, VA                           20191-5416
         (Address of principal                     (Zip Code)
          executive offices)



                                 (703) 758-6000
                         (Registrant's telephone number,
                              including area code)


         Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the  Securities  Exchange  Act of
1934  during  the  preceding  12 months  (or for such  shorter  period  that the
registrant  was  required to file such  report(s)),  and (2) has been subject to
such filing requirements for the past 90 days. Yes X No

Number of shares of Common Stock outstanding at June 30, 1996: 25,014,838





                           PART I--FINANCIAL INFORMATION

                    Item 1. Financial Statements (continued)

             AMERICAN MOBILE SATELLITE CORPORATION AND SUBSIDIARIES
                          (A Development Stage Company)
                         CONSOLIDATED STATEMENTS OF LOSS
                         -------------------------------
                      (in thousands, except per share data)
                                   (Unaudited)





                                  Three Months Ended    Six Months Ended        May 3, 1988
                                        June 30             June 30         (date of inception)
                                    1996       1995      1996      1995    through June 30, 1996

Revenues:


                                                                 
 Services                           $1,798     $1,793    $3,591     $3,601        $15,255
 Sales of equipment                  4,951         20     7,527         66          9,451
                                    ------     ------    ------     ------        -------

    Total Revenues                  $6,749     $1,813    11,118      3,667        $24,706

Costs and Expenses:
 Cost of service and operations      8,839      4,107    15,642      8,204         74,862
 Cost of equipment sold             14,446        120    16,889        158         21,565
 Sales and advertising               6,302      1,916    12,320      3,532         51,450
 General and administrative          4,430      4,269     9,393      7,610         69,098
 Depreciation and amortization      11,730        873    22,874      1,738         55,309
                                    ------     ------    ------     ------        -------

    Operating Loss                 (38,998)    (9,472)  (66,000)   (17,575)      (247,578)

Interest Income                        196      1,339       305      3,113         19,318
Interest Expense                    (4,707)        --    (7,691)        --         (8,674)
                                    ------     ------    ------     ------        -------

 Loss before extraordinary item    (43,509)    (8,133)  (73,386)   (14,462)      (236,934)

Extraordinary gain on early
  extinguishment of debt               --          --        --         --         (1,372)
                                    ------     ------    ------     ------        -------

 Net Loss                         $(43,509)   $(8,133) $(73,386)  $(14,462)     $(238,306)
                                   ========    =======  ========   ========      =========

Loss per share of common stock      $(1.72)    $(0.33)   $(2.94)    $(0.58)
                                    ======     ======    ======     ======
Weighted-average number
  of common
     shares outstanding
     during the period              25,286     24,899    25,003     24,854
                                    ======     ======    ======     ======


See notes to consolidated financial statements.








                          PART I--FINANCIAL INFORMATION

                    Item 1. Financial Statements (continued)

             AMERICAN MOBILE SATELLITE CORPORATION AND SUBSIDIARIES
                          (A Development Stage Company)
                           CONSOLIDATED BALANCE SHEETS
                           ---------------------------
                                 (in thousands)
                                   (Unaudited)



                                                             June 30,       December 31,
                                                               1996              1995
                                                               ----              ----
ASSETS
Current Assets:
                                                                        
     Cash and cash equivalents                               $15,939            $8,865
     Inventory                                                30,552            15,104
     Prepaid in-orbit insurance                                1,608             4,823
     Accounts receivable-trade                                 6,631             1,375
     Other current assets                                      1,809             2,860
                                                              ------            ------
          Total current assets                                56,539            33,027

PROPERTY AND EQUIPMENT IN SERVICE - NET                      346,771           362,105

DEFERRED CHARGES AND OTHER ASSETS - NET                       17,124             3,219
                                                             -------           -------
          Total assets                                      $420,434          $398,351
                                                            ========          ========
LIABILITIES AND STOCKHOLDERS' EQUITY
Current Liabilities:
     Short-term borrowings
     (including $ 10.0 million owed to related party)        $70,000           $    --
     Accounts payable and accrued expenses                    65,793            34,462
     Obligations under capital leases due within one year      4,501             2,446
     Obligation to related party for equipment financing       6,297             6,874
     Current portion of long-term debt                        51,943            60,990
                                                             -------           -------
          Total current liabilities                          198,534           104,772

Long-term Liabilities:
     Capital lease obligations                                 4,353             6,052
                                                               -----             -----
     Total liabilities                                       202,887           110,824

Stockholders' Equity:
     Preferred stock, par value $0.01; no shares issued           --                --
     Common stock, voting, par value $0.01                       250               250
     Additional paid-in capital                              449,911           448,757
     Common stock purchase warrants                           25,692             3,440
     Unamortized guarantee warrants                          (20,000)               --
     Deficit accumulated during the development stage       (238,306)         (164,920)
                                                           ---------         ---------
          Total stockholders' equity                         217,547           287,527
                                                             -------           -------
          Total liabilities and stockholders' equity        $420,434          $398,351
                                                            ========          ========

See notes to consolidated financial statements.









                          PART I--FINANCIAL INFORMATION

                    Item 1. Financial Statements (continued)

             AMERICAN MOBILE SATELLITE CORPORATION AND SUBSIDIARIES
                          (A Development Stage Company)
                      CONSOLIDATED STATEMENTS OF CASH FLOWS
                                 (in thousands)
                                   (Unaudited)



                                                 Six months Ended           May 3, 1988
                                                    June 30,           (date of inception)
                                                 1996       1995      through June 30, 1996
                                                 ----       ----      ---------------------
CASH FLOWS FROM OPERATING ACTIVITIES:
                                                                  
Net Loss                                      $(73,386)  $(14,462)         $(238,306)
Adjustments to reconcile net loss
  to net cash used in
    operating activities:
    Extraordinary loss on early
      extinguishment of debt                        --         --              1,372
    Amortization of debt discount                2,253         --              2,253
    Depreciation and amortization               22,874      1,738             55,309
    Deferred and other items, net                  707       (505)              (114)
    Changes in assets and liabilities:
        Prepaid in-orbit insurance               3,215         --             (1,608)
        Trade accounts receivable               (5,257)     1,000             (3,882)
        Other current assets                       648       (746)            (3,732)
        Inventory                              (15,448)    (3,493)           (30,552)
        Accounts payable and accrued expenses   20,050       (222)            49,229
                                               -------    -------           --------
        Net cash used in operating activities  (44,344)   (16,690)          (170,031)

CASH FLOWS FROM INVESTING ACTIVITIES:
  Additions to property under construction          --    (62,802)          (288,435)
  Additions to property and equipment
    in service                                  (7,090)    (5,302)           (25,925)
  Proceeds from sales of short-term
    investments                                     --     28,717            202,756
  Purchases of short-term investments               --         --           (202,756)
  Deferred charges and other assets                 --     (1,133)           (11,999)
  Non-inventory asset sales - net                   --         --              2,176
        Net cash used in investing             -------    -------           --------
          activities                            (7,090)   (40,520)          (324,183)

CASH FLOWS FROM FINANCING ACTIVITIES:
    Proceeds from issuance of Common Stock         904      2,112            390,987
    Principal payments under capital leases     (1,372)      (178)            (2,162)
    Payments on notes payable                       --         --            (34,667)
    Proceeds from short-term borrowings         70,000         --             70,000
    Proceeds from debt                           1,700      7,630            143,330
    Payments on long-term debt                 (12,269)   (11,379)           (55,755)
    Debt issuance costs                           (455)        --             (1,536)
    Redemption of Common Stock                      --         --                (44)
                                                ------     ------            -------
   Net cash provided by (used in)
     financing activities                       58,508     (1,815)           510,153

Net (decrease) increase in cash and
  cash equivalents                               7,074    (59,025)            15,939

CASH AND CASH EQUIVALENTS, beginning of period   8,865    137,287                 --
                                                ------    -------            -------
CASH AND CASH EQUIVALENTS, end of period       $15,939    $78,262            $15,939
                                                ======    =======            =======
See notes to consolidated financial statements.







                          PART I--FINANCIAL INFORMATION

                    Item 1. Financial Statements (continued)

             AMERICAN MOBILE SATELLITE CORPORATION AND SUBSIDIARIES
                          (A Development Stage Company)
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                   ------------------------------------------

                                  June 30, 1996
                                   (Unaudited)


1.  Organization and Business

American Mobile Satellite  Corporation was incorporated on May 3, 1988, by eight
of the initial applicants for the mobile satellite services license, following a
determination by the Federal  Communications  Commission ("FCC") that the public
interest  would best be served by granting  the license to a  consortium  of all
willing,  qualified applicants. The FCC has authorized American Mobile Satellite
Corporation to construct, launch, and operate a mobile satellite services system
(the "SKYCELL System") to provide a full range of mobile voice and data services
via satellite to land, air and sea-based  customers in a service area consisting
of the continental United States,  Alaska,  Hawaii, Puerto Rico, the U.S. Virgin
Islands, U.S. coastal waters,  international waters and airspace and any foreign
territory where the local government has authorized the provision of service. In
March  1991,  American  Mobile  Satellite  Corporation  transferred  the  mobile
satellite  services license ("MSS license") to a wholly owned  subsidiary,  AMSC
Subsidiary   Corporation   ("AMSC   Subsidiary").   American  Mobile   Satellite
Corporation has six other subsidiaries, two of which are inactive and four whose
limited  activities do not require material  resources at this time. On April 7,
1995, the Company  successfully  launched its first satellite  ("AMSC-1"),  from
Cape Canaveral, Florida.

American Mobile Satellite  Corporation (together with its subsidiaries "AMSC" or
the  "Company")  is devoting  its efforts to  establishing  a new  business.  As
further discussed in Management's Discussion and Analysis of Financial Condition
and Results of Operations,  this effort involves substantial risk. Specifically,
future  operating  results will be subject to  significant  business,  economic,
regulatory,  technical,  and competitive  uncertainties and  contingencies.  The
integration of the  components of the SKYCELL  System is a complex  undertaking.
Delays in the integration of the SKYCELL System have already occurred, and there
can be no  assurance  that  further  delays will not occur.  Depending  on their
extent and timing,  these factors individually or in the aggregate could have an
adverse  effect  on the  Company's  financial  condition  and  future  operating
results.

2.  Basis of Presentation

The  consolidated  balance  sheet  as of June  30,  1996,  and the  consolidated
statements  of loss and cash  flows for the six months  ended June 30,  1996 and
1995,  and for the period May 3, 1988 through June 30, 1996,  have been prepared
by the Company  without  audit.  In the opinion of management,  all  adjustments
(consisting  of normal  recurring  adjustments)  necessary to present fairly the
financial  position,  results of operations and cash flows at June 30, 1996, and
for all periods presented have been made. The balance sheet at December 31, 1995
has been taken from the audited financial statements.

The unaudited  consolidated  condensed financial statements included herein have
been  prepared  pursuant  to the rules and  regulations  of the  Securities  and
Exchange  Commission.  Certain  information  and footnote  disclosures  normally
included in financial  statements prepared in accordance with generally accepted
accounting principles have been condensed or omitted. While the Company believes
that the  disclosures  made are adequate to make the  information  presented not
misleading,   these  consolidated   financial   statements  should  be  read  in
conjunction  with  the  consolidated  financial  statements  and  related  notes
included  in the  Company's  1995  Annual  Report  on Form  10-K  ("1995  Annual
Report").

The Company paid  approximately  $3.0 million and $2.0 million in the  six-month
periods  ended June 30,  1996 and 1995,  respectively,  to related  parties  for
construction  and  service-related  obligations  and  payments  under  financing
agreements.  Payments to related parties from May 3, 1988 (date of inception) to
June 30, 1996,  aggregated  approximately $157.1 million.  Total indebtedness to
related parties as of June 30, 1996 approximated $24.5 million.

Loss per  common  share is based on the  weighted-average  number  of  shares of
Common  Stock  outstanding  during the period.  Stock  options and common  stock
purchase warrants are not reflected since their effect would be antidilutive.

Certain  amounts for the three months and six months ended June 30, 1995 and for
the period from  inception  to June 30, 1996 have been  reclassified  to conform
with the current period presentation.


3.  Liquidity and Financing


Adequate  liquidity  and capital  are  critical to the ability of the Company to
transition  successfully from being a development stage company to deploying and
operating the SKYCELL System.  During 1996, the Company will require significant
additional financing aggregating  approximately $150.0 million to cover expected
substantial operating losses, debt service  requirements,  capital expenditures,
inventory purchases and other working capital.

The Company does not expect to be in compliance with certain financial covenants
of its existing vendor debt arrangements  (the "Vendor  Financing") at September
30,  1996.  Debt  service  requirements  during 1996 are  therefore  expected to
include the repayment of existing  Vendor  Financing  which  approximates  $51.9
million at June 30, 1996.


To satisfy its near term financing requirements, the Company on January 19, 1996
established  a $40.0 million note  purchase  facility (the "Interim  Financing")
with Morgan  Guaranty  Trust Company of New York  ("Morgan"),  Toronto  Dominion
Investments,  Inc.  (an  affiliate  of The  Toronto  Dominion  Bank) and  Hughes
Communications  Satellite Services,  Inc. ("Hughes"),  an AMSC stockholder.  The
Company  commenced  borrowings under the Interim  Financing on January 24, 1996,
and had borrowed the full $40.0 million  available  under that facility at April
4, 1996. To satisfy its financing requirements beyond April 1996, the Company on
April 22 and on June 12,  1996  issued  notes  (the  "Short-Term  Notes") in the
aggregate  principal  amount of $30.0  million  to Morgan and  Toronto  Dominion
(Texas) Inc. (an affiliate of The Toronto  Dominion Bank). The proceeds from the
issuance of the Short-Term Notes satisfied the Company's liquidity needs through
June 1996. In connection  with its near term financing,  the Company  recognized
that it could not obtain such financing on commercially reasonable terms without
substantial credit support from its principal  stockholders.  In April 1996, the
Company entered into an agreement with Hughes Electronics  Corporation  ("HEC"),
pursuant  to which HEC  agreed to  guaranty  the  Company's  performance  of its
obligations  under the Interim  Financing and the Short-Term  Notes.  HEC is the
parent Company of Hughes.  In  consideration  of such guaranty and contingent on
the timing of the repayment of the Interim  Financing and the Short-Term  Notes,
and whether HEC guaranteed the facility through which the Interim  Financing and
Short-Term  Notes would be repaid,  the Company  agreed to pay HEC  compensation
consisting of cash fees and the issuance of warrants  exercisable  for shares of
the Company's Common Stock. On June 7, 1996, Singapore Telecommunications,  Ltd.
("Singapore")  and the  Company  entered  into an  agreement  pursuant  to which
Singapore agreed to guaranty a portion of the Short-Term Notes on the same terms
as the guaranty  extended by HEC. HEC and Singapore  agreed that no compensation
would be payable to them in return for their  guaranty of the Interim  Financing
and the Short-Term Notes if they received compensation for their guaranty of the
Bank Financing,  discussed below. Therefore, no fees were paid or are due to HEC
or Singapore for their guarantee of the Interim Financing and Short-Term Notes.

The terms of the  Interim  Financing  were  amended  in  connection  with  HEC's
guaranty of that facility. As amended, the Interim Financing bore interest at an
annual rate  increasing  from 11% to 15% until April 18, 1996,  and at an annual
rate of 5.75% thereafter.  The Interim  Financing,  as amended,  matured and was
repaid on July 1, 1996. Additionally, the lenders received 100,000 warrants (the
"Interim  Financing  Warrants"),  valued at $2.2 million at date of issue,  that
allow them to purchase  Common  Stock at $.01 per share.  The Interim  Financing
Warrants expire in January 2001. The Short-Term Notes bore interest at an annual
rate of 5.6914%, and, as amended, matured and were repaid on July 1,1996.

To  satisfy  its  ongoing  financing  needs,  the  Company  on  June  28,  1996,
established a $225.0 million debt facility with Morgan and The Toronto  Dominion
Bank (the "Bank Financing")  consisting of two facilities:  (i) a $150.0 million
five-year,  multi-draw term loan facility (the "Term Loan Facility"), and (ii) a
$75.0 million five-year revolving credit facility with a bullet maturity on June
30, 2001 (the "Working Capital Facility"). Proceeds from the Bank Financing were
used to repay the Interim  Financing and the Short-Term  Notes, and will be used
to  refinance  short-term  Vendor  Financing,  and for general  working  capital
purposes.  As of August 8, the Company has drawn down $35.0  million of the Term
Loan  Facility at annual  interest  rates  ranging  from  5.6875% to 5.75%.  The
Company  concluded  that it  could  not  complete  the  Bank  Financing  without
substantial credit support from its principal  stockholders (the  "Guarantees").
HEC,  Singapore and certain of the Company's other principal  stockholders  (the
Guarantors")  guaranteed  $200.0  million of the Bank  Financing in exchange for
compensation  consisting  principally of cash fees and warrants (the  "Guarantee
Warrants").  The  Guarantee  Warrants  have been  preliminarily  valued at $20.0
million at date of issue subject to a final valuation  opinion by an independent
third party.  The Guarantee  Warrants allow the Guarantors to purchase 5 million
shares of the Company's  Common Stock at a price of $24 per share. The Guarantee
Warrants  expire on June 28,  2001.  The  Guarantees  will remain in place until
certain  financial  and  operational  covenants  are  met  for  two  consecutive
quarterly  periods during 1997.  Until such time as the Guarantees are released,
subsequent  borrowings  under both  facilities are  contingent  upon the Company
meeting  certain future  performance  tests related to quarterly  revenues,  the
number of subscribers, operating cash flow, and earnings before interest, taxes,
depreciation and amortization.  If these performance measures are not satisfied,
the  Guarantors  can  direct  that  no  further  borrowings  be made  under  the
facilities.  There can be no  assurance  that such  performance  levels  will be
achieved.  Subsequent to the release of the Guarantees,  anticipated to occur in
1997, the Company will continue to be subject to maintaining certain subscriber,
revenue and debt to  subscriber  ratios.  The Bank  Financing  is secured by the
pledge of substantially  all of the assets of the Company.  The Company believes
that the proceeds from the Bank  Financing,  together with proceeds from certain
claims  under its launch  insurance as described in Note 5, will provide it with
sufficient liquidity for its operations through its peak financing requirements.

In February  1995,  in return for a $10.0  million  prepayment of certain of the
Company's  ground  segment  obligations  ("Ground  Segment  Obligations"),   the
contractor  agreed  to  reduce  the  cost  of the  ground  segment  asset  being
constructed  by waiving  $2.0  million of the amounts  owed.  At the time of the
$10.0 million  prepayment,  the Company reduced the ground segment asset by $1.4
million representing unpaid interest on its Ground Segment Obligations.

Since the  Company  expected  that it would not be in  compliance  with  certain
financial  covenants  under its  Vendor  Financing  agreements  during the first
quarter of 1996,  the  agreements  were  amended  to defer the date of  required
compliance to September 30, 1996.



4.  Legal and Regulatory Matters

Like other mobile  service  providers in the  telecommunications  industry,  the
Company is subject to substantial domestic, foreign and international regulation
including  the need for  regulatory  approvals to both  complete and operate the
SKYCELL  System and operate  mobile data  terminals and mobile  telephones.  The
successful  operation of the SKYCELL System is dependent on a number of factors,
including the amount of L-band  spectrum made available to the Company  pursuant
to an international coordination process. The United States is currently engaged
in an international process of coordinating the Company's access to the spectrum
that the FCC has  assigned  to the  Company.  While the  Company  believes  that
substantial  progress has been made in the coordination process and expects that
the United  States  government  will be  successful  in securing  the  necessary
spectrum,  the process is not yet  complete.  The inability of the United States
government to secure  sufficient  spectrum  could have an adverse  effect on the
Company's financial position, results of operations, and its cash flows.

The Company has filed applications with the FCC and expects to file applications
in the future with respect to the  operation  of its SKYCELL  System and certain
types  of  mobile  data  terminals  and  mobile   telephones.   Certain  of  its
applications  pertaining to future service have been opposed. While the Company,
for various reasons,  believes that it will receive the necessary approvals on a
timely basis,  there can be no assurance  that the requests will be granted on a
timely  basis or that  they  will be  granted  on  conditions  favorable  to the
Company.  Any significant  changes to the applications  resulting from the FCC's
review process or any significant delay in their approval could adversely affect
the Company's financial position, results of operations, and its cash flows. The
Company's  license  requires  that it  comply  with a  construction  and  launch
schedule specified by the FCC for each of the three authorized  satellites.  The
second  and  third  satellites  are not in  compliance  with  the  schedule  for
commencement of construction.  The Company has asked the FCC to grant extensions
of the deadlines for the second and third satellites. Certain of these extension
requests  have  been  opposed  by third  parties.  The FCC has not  acted on the
Company's  requests.  The FCC has the authority to revoke the authorizations for
the second and third satellites and in connection with any such revocation could
exercise its authority to rescind the Company's  license.  The Company  believes
that the exercise of such authority to rescind the license is unlikely.

In 1992,  a former  director  of AMSC filed an  Amended  Complaint  against  the
Company alleging  violations of the Communications Act of 1934, as amended,  and
of the Sherman Act and breach of contract.  The suit seeks  damages for not less
than $100  million  trebled  under the  antitrust  laws plus  punitive  damages,
interest, attorneys' fees and costs. In mid-1992, the Company filed its response
denying all allegations.  The Company's motion for summary  judgement,  filed on
June 30,  1994,  was denied on April 18,  1996.  The matter has now been set for
trial beginning November 25, 1996. Management believes that the ultimate outcome
of this matter will not be material to the Company's financial position, results
of operations, and its cash flows.


5.  Other Matters

At June 30, 1996, the Company had remaining contractual  commitments to purchase
both mobile data terminal inventory and mobile telephone inventory approximating
$43.9 million.  During the second  quarter of 1996, the Company  charged cost of
sales for a $4.0 million  provision to reconfigure  certain  inventory to better
meet customer requirements. The Company also charged cost of sales in the amount
of $4.1 million for the writedown of certain assets, including inventory, to net
realizable value.

In connection with testing of the  Communications  Ground Segment ("CGS") in May
1995, a transmission  was sent to AMSC-1 which caused certain  components of the
communications  payload to overheat,  damaging  one of the eight  hybrid  matrix
amplifier output ports that serve the spotbeams covering the eastern and central
United States.  Beginning in December 1995,  AMSC-1  experienced an intermittent
degradation of power in the eastern spotbeam.  Although the Company attempted to
make  adjustments to the SKYCELL System to compensate and correct for this power
loss, it was unable to eliminate recurrences of this power degradation.

Accordingly,  in March  1996 the  Company  decided  to stop  using  the  eastern
spotbeam  and to expand the  coverage  of the other  three  CONUS  spotbeams  to
include the territory  previously  covered by the eastern spotbeam.  The Company
believes  that  the   reconfiguration   will  provide   substantially  the  same
geographical  coverage  as the  original  four  spotbeam  configuration  without
affecting  the quality of the service  provided by AMSC-1.  The  reconfiguration
does not significantly  change the coverage of the AMSC-1's two other spotbeams,
which cover  Alaska,  Hawaii,  the  Caribbean  and  portions  of South  America.
Expanding the three CONUS spotbeams to cover the territory previously covered by
the eastern  spotbeam  will require the use of additional  power for  subscriber
channels  in  certain  locations.  This  power  adjustment  will not  affect the
anticipated  in-orbit  life  of  AMSC-1,  but  will  eventually  result  in  the
availability  of fewer channels for the SKYCELL System when the full capacity of
AMSC-1 is  approached.  Any  reduction in the number of available  channels will
depend on a variety of factors  including  the  actual  geographical  mix of the
Company's  subscriber base and the types of subscriber  equipment used. Based on
its analyses to date, the Company  believes that AMSC-1's  channel capacity will
not be  reduced  by more than  15%.  The  Company  also  believes  that any such
reduction will not affect its  anticipated  revenue growth until early 1999. The
timing  and  amount of any impact on revenue  growth  cannot be  predicted  with
precision and will depend upon, among other things, the results of the Company's
marketing  efforts  and the  availability  of  alternative  satellite  capacity,
including capacity from a second generation satellite, should the Company decide
to proceed with its development, or pursuant to the Company's Satellite Capacity
Agreement  with TMI  Communications  and  Company,  Limited  Partnership,  which
launched a satellite  similar to AMSC-1 in April 1996. The Company filed a claim
for indemnity  under its launch  insurance with respect to the events leading to
the  reconfiguration  of  AMSC-1.  On  August 1,  1996,  the  Company  reached a
resolution  of the claims under its satellite  insurance  contracts and policies
and received proceeds in the amount of $66.0 million which will be used to repay
the Working  Capital  Facility  and  portions of the Term Loan  Facility and the
Vendor Financing. The carrying value of the satellite will be reduced by the net
insurance  proceeds,  which will  result in a reduction  of future  depreciation
charges beginning in the third quarter of 1996.

In occurrences not directly related to testing and deployment of the CGS, AMSC-1
has  experienced  on  separate  occasions  the  failure of two solid state power
amplifiers  ("SSPA")  serving the Mountain,  West,  Alaska/Hawaii  and Caribbean
spotbeams.  These  spotbeams  were designed to be served by eight SSPAs with two
spares.  The Company is  currently  operating  these  spotbeams  in a seven SSPA
configuration  and preserving one spare SSPA.  AMSC-1 has also  experienced  the
failure of an L-band receiver supporting the Alaska/Hawaii  spotbeam.  While the
Company and its contractors  were not able to identify the specific cause of the
failure,  it is believed that it may be attributable to a defective receiver and
not a problem  inherent  in the design of AMSC-1.  The  Company is using a spare
back-up L-band receiver on AMSC-1 to service the  Alaska/Hawaii  spotbeam.  As a
result of  reconfiguring  AMSC-1 to operate  with five  spotbeams,  there is one
other back-up L-band receiver on AMSC-1.






                          PART I--FINANCIAL INFORMATION

                 Item 2. Management's Discussion and Analysis of
              Interim Financial Condition and Results of Operations


General

The following  discussion and analysis  provides  information  which  management
believes is relevant to an  assessment  and  understanding  of the  consolidated
financial  condition  and results of  operations  of American  Mobile  Satellite
Corporation  (with its  subsidiaries,  "AMSC" or the "Company").  The discussion
should be read in conjunction  with the  consolidated  financial  statements and
notes thereto.

American Mobile  Satellite  Corporation was  incorporated in May 1988. Since May
1988, the Company has been a development stage company, engaged primarily in the
design,  development,   construction,  deployment  and  financing  of  a  mobile
satellite  communications  system (the  "SKYCELL  System").  The SKYCELL  System
includes the Company's first satellite ("AMSC-1") launched successfully in April
1995, and a fixed  communications  ground segment (the "CGS"). In December 1995,
the Company began to introduce  certain voice  products and services,  including
its Satellite Telephone Service.

Factors that could affect Future Operating Results

The Company's future operating  results could be adversely  affected by a number
of uncertainties and factors, including (i) the timely completion and deployment
of all the  Company's  products  and  related  services,  including  among other
things, availability of mobile telephones, data terminals and other equipment to
be used with the SKYCELL System  ("Subscriber  Equipment") being manufactured by
third  parties  over which the  Company  has  limited  control,  (ii) the market
acceptance of the Company's  services,  (iii) the ability and the  commitment of
the Company's Authorized Service Providers and Authorized Sales Agents to market
and distribute the Company's services,  (iv) competition from existing companies
which  provide  services  using  existing  communications  technologies  and the
possibility  of competition  from companies  using new technology in the future,
(v) capacity  constraints  arising from the  reconfiguration of AMSC-1 discussed
below, and (vi) additional technical anomalies that may occur within the SKYCELL
System,  including  those  relating to AMSC-1,  which could impact,  among other
things,  the operation of the SKYCELL System and the cost, scope or availability
of in-orbit insurance.

The  Company's  operating  results  and capital  and  liquidity  needs have been
materially  affected by delays  experienced in the development and deployment of
the SKYCELL System.  In particular,  the Company's  marketing  efforts have been
materially affected by delays experienced in the development and availability of
Subscriber  Equipment.  Initial  Subscriber  Equipment for  Satellite  Telephone
Service  ("STS") use did not become  commercially  available until December 1995
with additional  configurations  not available until the second quarter of 1996.
In  addition,  the CGS  currently  does not support  facsimile  capability.  The
Company  anticipates  that  facsimile  capability  will become  available in the
fourth  quarter of 1996.  The impact of these delays on the Company's  marketing
efforts has  substantially  decreased  the  Company's  anticipated  revenues and
increased the Company's  capital and liquidity  needs. No assurance can be given
that additional  delays  relating to the SKYCELL System or Subscriber  Equipment
will not be encountered in the future and have an adverse impact on the Company.

In addition, the markets for wireless  communications services are characterized
by rapid  technological  and other changes.  The Company's  success depends,  in
part,  on its  ability  to  respond  and  adapt  to  such  changes.  The  delays
experienced  in the  deployment of the SKYCELL  System and the  availability  of
Subscriber Equipment,  together with changes in market conditions,  have already
caused the Company to redefine its focus on various products and markets, and to
modify its intended distribution arrangements. For instance, the rapid build-out
of cellular  and other  terrestrial-based  wireless  communications  systems has
impacted the Company's  Satellite  Roaming  Service  business by preempting  the
attention of the  cellular  carriers who are the  Company's  Authorized  Service
Providers.  To date, the ASPs have not expended significant efforts in marketing
the  Company's  services.  By  contrast,  perceived  demand has resulted in more
emphasis on the maritime  market.  The Company  expects that sales and marketing
expenses will  continue to increase  from  previous  levels in 1995 as increased
resources are devoted to its  subscriber  acquisition  programs.  As of June 30,
1996, there were approximately 9,200 subscribers on the SKYCELL System.  Charges
to  operations  for  depreciation  expense for the SKYCELL  System  began in the
fourth quarter of 1995 and accordingly,  it is expected that future charges will
be  significant.   Additionally,  the  Company  discontinued  capitalization  of
interest  costs in the  fourth  quarter  of 1995 upon the  commencement  of full
commercial service.  Interest expense in 1996 is expected to be significant as a
result of borrowings  under the Interim  Financing,  the Short-Term  Notes,  and
borrowings under the Bank Financing as discussed below.

In March 1996,  due to certain  technical  anomalies,  the Company  reconfigured
AMSC-1 to provide  service using five,  instead of the previous six,  spotbeams.
Although this reconfiguration will not affect the in-orbit life of AMSC-1 or the
quality of service  provided,  it will eventually  result in the availability of
fewer subscriber channels as full capacity of AMSC-1 is approached. Although any
actual  reduction  in the number of  available  channels  will be dependent on a
variety of factors,  based on its analyses to date,  the Company  believes  that
AMSC-1's channel capacity will not be reduced by more than 15%, or that any such
reduction will affect the Company's anticipated revenue growth until early 1999.
See "Technological Developments."


Results of Operations

Operating Revenues

Service revenues,  which include both the Company's Satellite Telephone Services
and its Fleet  Management  Data  services,  approximated  $1.8  million and $3.6
million  for  the  three-month  and  six-month  periods  ended  June  30,  1996,
respectively.  Service revenue from Satellite  Telephone  Services  approximated
$849,000 and $1.8 million for the three-month  and six-month  periods ended June
30, 1996  including  approximately  $1.3 million for the six-month  period ended
June 30, 1996  attributable to satellite  capacity leased to TMI  Communications
and Company, Limited Partnership ("TMI"), a Canadian limited partnership,  under
a  commitment  which was  completed  in May 1996.  Service  revenue  from  Fleet
Management  Data  Services  approximated  $949,000  and  $1.8  million  for  the
three-month and six-month periods ended June 30, 1996, respectively, compared to
$1.8  million  and $3.6  million for the same  period in 1995,  a  reduction  of
$851,000 and $1.8 million respectively.  Prior to 1996, the Company provided its
Fleet  Management  Data  Service  using  satellite   capacity  leased  from  the
Communications  Satellite Corporation  ("COMSAT"),  the cost of which was passed
through to one customer  ("Major  Customer").  The decrease in Fleet  Management
Data  Service  revenue of $1.8 million for the  six-month  period ended June 30,
1996 reflects the reduced  revenue from the Major Customer  resulting from lower
billings for the use o the lower cost AMSC-1 versus billings attributable to the
leased COMSAT satellite applied on a pass-through basis. Of the Fleet Management
Data Services revenues,  42% and 47% were attributable to the Major Customer for
the three months and six months ended June 30,  1996,  respectively  compared to
71% and 72% for the respective  periods in 1995. Revenue from the sale of mobile
data terminals and mobile telephones increased from $20,000 for the three months
ended June 30, 1995 to $5.0  million for the three  months  ended June 30, 1996,
and increased to $7.5 million for the six months ended June 30, 1996 compared to
$66,000 for the same period in 1995.  This increase is  attributable  to (i) the
Company's  introduction  of certain voice products in the fourth quarter of 1995
and the resulting sale of mobile telephones, and (ii) the increased availability
of mobile  data  terminals  in 1996  compared  to the  first six  months of 1995
following a contract signed with a mobile data terminal manufacturer in February
1995.

Costs and Expenses

The Company's costs and expenses have primarily increased in connection with the
commencement  of full  commercial  service in December 1995. Cost of service and
operations for the three-month and six-month  periods ended June 30, 1996, which
includes costs to support  subscribers and to operate the SKYCELL  System,  were
$8.8  million and $15.6  million,  respectively,  $4.7  million and $7.4 million
greater than the comparable  periods in 1995. Cost of service and operations for
the three-month and six-month periods ended June 30, 1996 were 19% and 20%, as a
percentage  of operating  expenses,  compared to 36% and 39% for the  comparable
periods in 1995.  The dollar  increase  in cost of service  and  operations  was
primarily  attributable to (i) additional personnel and related costs to support
both existing and anticipated  customer demand,  (ii) increased costs associated
with the on-going  maintenance of the Company's billing systems and the CGS, and
(iii) $3.2 million of  insurance  expense for  in-orbit  insurance  coverage for
AMSC-1,  offset  by the  elimination  of COMSAT  lease  expense  reflecting  the
transition of the Company's  customers from the leased satellite to AMSC-1.  The
decrease as a percentage of operating  expenses was  attributable to the overall
increase in total  operating  expenses.  The cost of equipment sold increased to
$14.4  million from  $120,000 for the three months ended June 30, 1996 and 1995,
respectively,  and to $16.9  million from $158,000 for the six months ended June
30, 1996 and 1995,  respectively,  and represented 32% and 1% of total operating
expenses  for the three  months  ended June 30, 1996 and 1995,  and 22% and less
than 1% for the six-month  periods  ended June 30, 1996 and 1995,  respectively.
The increase in both dollars and as a  percentage  of operating  expenses of the
cost  of  equipment  sold  is  primarily   attributable  to  (i)  the  Company's
introduction  of certain  voice  products in the fourth  quarter of 1995 and the
resulting  sale of mobile  telephones,  (ii) the  availability  of  mobile  data
terminals in 1996 compared to the first six months of 1995, (iii) a $4.0 million
charge for the  reconfiguration  of certain inventory  components to better meet
customer  requirements,  and (iv) a $4.1 million  writedown  of certain  assets,
including  inventory,  to net realizable value.  Sales and advertising  expenses
were $6.3 million and $12.3 million for the  three-month  and six-month  periods
ended June 30, 1996,  respectively,  compared with $1.9 million and $3.5 million
for the same periods in 1995. Sales and advertising expenses for the three-month
and six-month periods ended June 30, 1996 were 14% and 16%,  respectively,  as a
percentage  of  operating  expenses,  compared  to 17% for both  the  comparable
periods in 1995.  The dollar  increase of sales and  advertising  expenses  were
primarily  attributable to (i) additional  headcount and personnel related costs
associated  with the increase in sales staff,  and (ii) increased costs directly
associated with the increased subscriber acquisition programs. The decrease as a
percentage of operating  expenses was  attributable  to the overall  increase in
total  operating   expenses.   General  and  administrative   expenses  for  the
three-month and six-month periods ended June 30, 1996 were $4.4 million and $9.4
million,  respectively,  $161,000 and $1.8 million  greater than the  comparable
periods in 1995.  General and  administrative  expenses for the  three-month and
six-month  periods  ended  June 30,  1996 were 10% and 12%,  respectively,  as a
percentage of operating  expenses,  compared to 38% and 36% for the same periods
in 1995.  The dollar  increase in general and  administrative  expenses  for the
first six months of 1996 compared to 1995 was primarily  attributable  to a $1.2
million increase in personnel-related  costs associated with hiring and training
staff to support full  commercial  service and increased  facilities and related
support costs approximating  $610,000. The decrease as a percentage of operating
expenses was attributable to the overall  increase in total operating  expenses.
Depreciation  and  amortization  expense was $11.7 million and $22.9 million for
the  three-month  and  six-month  periods  ended  June 30,  1996,  respectively,
compared  with  $873,000  and  $1.7  million  for  the  same  periods  in  1995.
Depreciation and  amortization  for the three-month and six-month  periods ended
June 30,  1996 were 25% and 30%,  respectively,  as a  percentage  of  operating
expenses,  compared with 8% for both the  comparable  periods in 1995.  Both the
dollar  increase  and the  increase as a  percentage  of  operating  expenses in
depreciation and amortization  expense were  attributable to the commencement of
depreciation of both AMSC-1 and related assets and the CGS in the fourth quarter
of 1995.


Interest

Interest  income was  $196,000  and $305,000 in the  three-month  and  six-month
periods  ended June 30,  1996,  respectively,  compared to $1.3 million and $3.1
million  in the same  periods  in 1995.  The  decreases  were a result  of lower
average cash balances in the first six months of 1996. The Company incurred $4.7
million and $7.7 million of interest  expense for the  three-month and six-month
periods ended June 30, 1996,  respectively,  compared to no interest expense for
the comparable  periods of 1995 reflecting (i) the  discontinuation  of interest
cost  capitalization as a result of substantially  completing the SKYCELL System
in the fourth quarter of 1995, and (ii) the amortization of debt discount in the
first six months of 1996 of approximately $2,253,000.


Capital Expenditures

Capital  expenditures,  including  additions  financed  through vendor financing
arrangements,  for the first six months of 1996 were $7.5  million  compared  to
$62.1 million for the same period in 1995. The decrease was largely attributable
to the purchase,  in the first quarter of 1995, of launch insurance at a cost to
the Company of $42.8 million in connection  with the Company's  launch  contract
with Martin Marietta Commercial Launch Services, Inc.

Liquidity and Capital Resources

Adequate  liquidity  and capital  are  critical to the ability of the Company to
transition  successfully from being a development stage Company to deploying and
operating the SKYCELL System.  During 1996, the Company will require significant
additional financing aggregating  approximately $150.0 million to cover expected
substantial operating losses, debt service  requirements,  capital expenditures,
inventory purchases and other working capital. The Company does not expect to be
in  compliance  with certain  financial  covenants  of its existing  vendor debt
arrangements  (the  "Vendor  Financing")  at September  30,  1996.  Debt service
requirements  during 1996 are  therefore  expected to include the  repayment  of
existing Vendor Financing which  approximates $51.9 million at June 30, 1996. In
addition,  the Company  expects that operating  revenues will be insufficient to
cover operating expenses until sometime in 1997.

The effect of these matters,  among others,  is that the Company  estimates that
its peak financing  requirement  will be  approximately  $200.0 million in early
1998. The Company's  actual peak financing  requirements  may differ  materially
from this estimate  based on, among other  factors,  shortfalls  from  estimated
levels of  operating  cashflows  due to delays in the  introduction  of  certain
products  and  services,   the  unavailability  of  Subscriber  Equipment,   and
insufficient demand for the Company's  services.  See "Factors that could affect
Future Operating Results."

To satisfy its near term financing requirements, the Company on January 19, 1996
established  a $40.0 million note  purchase  facility (the "Interim  Financing")
with Morgan  Guaranty  Trust Company of New York  ("Morgan"),  Toronto  Dominion
Investments,  Inc.  (an  affiliate  of The  Toronto  Dominion  Bank) and  Hughes
Communications  Satellite Services,  Inc. ("Hughes"),  an AMSC stockholder.  The
Company  commenced  borrowings under the Interim  Financing on January 24, 1996,
and had borrowed the full $40.0 million  available  under that facility at April
4, 1996. To satisfy its financing requirements beyond April 1996, the Company on
April 22, 1996 and June 12, 1996 issued  notes (the  "Short-Term  Notes") in the
aggregate  principal  amount of $30.0  million  to Morgan and  Toronto  Dominion
(Texas) Inc. (an affiliate of The Toronto  Dominion Bank). The proceeds from the
issuance of the Short-Term Notes satisfied the Company's liquidity needs through
June 1996.

In connection with its near term financing, the Company recognized that it could
not obtain such financing on commercially  reasonable terms without  substantial
credit  support  from its  principal  stockholders.  In April 1996,  the Company
entered into an agreement with Hughes Electronics Corporation ("HEC"),  pursuant
to which HEC agreed to guaranty the  Company's  performance  of its  obligations
under the Interim  Financing and the Short-Term Notes. HEC is the parent Company
of Hughes. In consideration of such guaranty and contingent on the timing of the
repayment of the Interim  Financing and the  Short-Term  Notes,  and whether HEC
guarantees the facility through which the Interim Financing and Short-Term Notes
would be repaid,  the Company  agreed to pay to HEC  compensation  consisting of
cash fees and the issuance of warrants  exercisable  for shares of the Company's
Common Stock. On June 7, 1996, Singapore Telecommunications,  Ltd. ("Singapore")
and the Company entered into an agreement  pursuant to which Singapore agreed to
guaranty a portion  of the  Short-Term  Notes on the same terms as the  guaranty
extended by HEC. HEC and Singapore agreed that no compensation  would be payable
to them in return for their guaranty of the Interim Financing and the Short-Term
Notes if they received  compensation  for their guaranty of the Bank  Financing,
discussed below. Therefore, no fees were paid or are due to HEC or Singapore for
their guarantee of the Interim Financing and Short-Term Notes.

The terms of the  Interim  Financing  were  amended  in  connection  with  HEC's
guaranty of that facility. As amended, the Interim Financing bore interest at an
annual rate  increasing  from 11% to 15% until April 18, 1996,  and at an annual
rate of 5.75% thereafter.  The Interim  Financing,  as amended,  matured and was
repaid on July 1, 1996.

The terms of the Interim Financing were also amended to delete certain covenants
the Company  had not  satisfied,  including  certain  covenants  relating to the
attainment  of certain  numbers of  subscribers.  The lenders  under the Interim
Financing had previously waived compliance with those covenants.

The  Short-Term  Notes bore  interest  at an annual  rate of  5.6914%,  and,  as
amended, matured and were paid on July 1, 1996.

To  satisfy  its  ongoing  financing  needs,  the  Company  on  June  28,  1996,
established a $225.0 million debt facility with Morgan and The Toronto  Dominion
Bank (the "Bank Financing")  consisting of two facilities:  (i) a $150.0 million
five-year,  multi-draw term loan facility (the "Term Loan Facility"), and (ii) a
$75.0 million five-year revolving credit facility with a bullet maturity on June
30, 2001 (the "Working Capital Facility"). Proceeds from the Bank Financing were
used to repay the Interim  Financing and the Short-Term  Notes, and will be used
to  refinance  short-term  Vendor  Financing,  and for general  working  capital
purposes.  As of August 8, the Company has drawn down $35.0  million of the Term
Loan  Facility at annual  interest  rates  ranging  from  5.6875% to 5.75%.  The
Company  concluded  that it  could  not  complete  the  Bank  Financing  without
substantial credit support from its principal  stockholders (the  "Guarantees").
HEC,  Singapore and certain of the Company's other principal  stockholders  (the
Guarantors")  guaranteed  $200.0  million of the Bank  Financing in exchange for
compensation  consisting  principally of cash fees and warrants (the  "Guarantee
Warrants").  The  Guarantee  Warrants  have been  preliminarily  valued at $20.0
million at date of issue subject to a final valuation  opinion by an independent
third party.  The Guarantee  Warrants allow the Guarantors to purchase 5 million
shares  of the  Company's  Common  Stock at a price of $24 per  share.  The Bank
Financing  Warrants expire on June 28, 2001. The Guarantees will remain in place
until certain  financial and  operational  covenants are met for two consecutive
quarterly  periods during 1997.  Until such time as the Guarantees are released,
subsequent  borrowings  under both  facilities are  contingent  upon the Company
meeting  certain future  performance  tests related to quarterly  revenues,  the
number of subscribers, operating cash flow, and earnings before interest, taxes,
depreciation and amortization.  If these performance measures are not satisfied,
the  Guarantors  can  direct  that  no  further  borrowings  be made  under  the
facilities.  There can be no  assurance  that such  performance  levels  will be
achieved.  Subsequent to the release of the Guarantees,  anticipated to occur in
1997, the Company will continue to be subject to maintaining certain subscriber,
revenue and debt to  subscriber  ratios.  The Bank  Financing  is secured by the
pledge of substantially  all of the assets of the Company.  The Company believes
that the proceeds from the Bank  Financing,  together with proceeds from certain
claims  under its launch  insurance  as  described  below,  will provide it with
sufficient liquidity for its operations through its peak financing requirements.

On February 7, 1996, the Company filed a registration  statement relating to the
offering of up to 4,600,000  shares of the Company's  Common Stock.  In light of
the current  market price of its Common Stock,  the Company has  concluded  that
such offering cannot presently be completed on commercially reasonable terms.

The Company filed a claim for indemnity under its launch  insurance with respect
to the anomalies leading to the  reconfiguration  of AMSC-1 discussed below. See
"Technological   Developments."  On  August  1,  1996,  the  Company  reached  a
resolution of the claims under its satellite  insurance  contracts and policies,
and received proceeds in the amount of $66.0 million which will be used to repay
the Working  Capital  Facility  and  portions of the Term Loan  Facility and the
Vendor  Financing.  The carrying  value of the satellite  will be reduced by the
amount of the net insurance proceeds, which will result in a reduction of future
depreciation charges beginning in the third quarter of 1996.

At June 30, 1996, the Company had remaining contractual  commitments to purchase
both mobile data terminal inventory and mobile telephone inventory approximating
$43.9 million.

For the period from inception through June 30, 1996, the Company has used $170.0
million of cash in operating  activities and $324.2 million of cash in investing
activities and has generated  $510.2 million of cash from financing  activities.
The  Company's  primary  investing  activity  since  inception  has been capital
expenditures related to the SKYCELL System. The Company has financed its capital
and  operating  requirements  through a  combination  of private debt and equity
placements,  a public equity offering,  borrowings from financial  institutions,
and vendor financing arrangements.

Cash used in operating  activities was $44.3 million for the first six months of
1996  compared to cash used of $16.7  million  for the same  period in 1995,  an
increase of $27.6 million. The increase in cash used in operating activities was
primarily  attributable to (i) increased  operating losses, (ii) increased trade
receivables as a result of increased  equipment and service  revenue,  and (iii)
increased  inventory  acquisitions,  offset  by the net  increase  in  operating
accounts  payable and accrued  expenses.  Cash used in investing  activities was
$7.1 million for the first six months of 1996  compared to $40.5 million for the
same period in 1995, a decrease of $33.4  million.  The  decrease was  primarily
attributable  to the decrease in construction  activity,  which included a $42.8
million  purchase  of launch  insurance  in the first  quarter  of 1995,  offset
partially by the sale of $28.7  million of short-term  investments  in the first
quarter of 1995. Cash provided by financing activities was $58.5 million for the
first six months of 1996  compared to cash used in financing  activities of $1.8
million for the same period in 1995, an increase of $60.3 million.  The increase
was largely  attributable  to the $70.0 million of borrowings  under the Interim
Financing and  Short-Term  Notes in the first six months of 1996. As of June 30,
1996, the Company had $15.9 million of cash and cash  equivalents  and a working
capital deficit of $142.0 million.


Technological Developments

In connection  with testing of the CGS in May 1995, a  transmission  was sent to
AMSC-1  which  caused  certain  components  of  the  communications  payload  to
overheat,  damaging one of the eight hybrid matrix  amplifier  output ports that
serve the spotbeams covering the eastern and central United States. Beginning in
December 1995,  AMSC-1  experienced an intermittent  degradation of power in the
eastern  spotbeam.  Although the Company  attempted to make  adjustments  to the
SKYCELL  System to compensate  and correct for this power loss, it was unable to
eliminate recurrences of this power degradation.  Accordingly, in March 1996 the
Company decided to stop using the eastern spotbeam and to expand the coverage of
the other three CONUS spotbeams to include the territory  previously  covered by
the eastern spotbeam. The Company believes that the reconfiguration will provide
substantially  the same  geographical  coverage as the  original  four  spotbeam
configuration  without  affecting the quality of the service provided by AMSC-1.
The reconfiguration  will not significantly change the coverage of AMSC- 1's two
other spotbeams, which cover Alaska, Hawaii, the Caribbean and portions of South
America.

Expanding the three CONUS spotbeams to cover the territory previously covered by
the eastern  spotbeam  will require the use of additional  power for  subscriber
channels  in  certain  locations.  This  power  adjustment  will not  affect the
anticipated  in-orbit  life  of  AMSC-1,  but  will  eventually  result  in  the
availability  of fewer channels for the SKYCELL System when the full capacity of
AMSC-1 is  approached.  Any  reduction in the number of available  channels will
depend on a variety of factors  including  the  actual  geographical  mix of the
Company's  subscriber base and the types of Subscriber  Equipment used. Based on
its analyses to date, the Company  believes that AMSC-1's  channel capacity will
not be  reduced  by more than  15%.  The  Company  also  believes  that any such
reduction will not affect its  anticipated  revenue growth until early 1999. The
timing  and  amount of any impact on revenue  growth  cannot be  predicted  with
precision and will depend upon, among other things, the results of the Company's
marketing  efforts  and the  availability  of  alternative  satellite  capacity,
including capacity from a second generation satellite, should the Company decide
to proceed with its development, or pursuant to the Company's Satellite Capacity
Agreement with TMI, which launched a satellite similar to AMSC-1 in April 1996.

In occurrences not directly related to testing and deployment of the CGS, AMSC-1
has  experienced  on  separate  occasions  the  failure of two solid state power
amplifiers  ("SSPA")  serving the Mountain,  West,  Alaska/Hawaii  and Caribbean
spotbeams.  These  spotbeams  were designed to be served by eight SSPAs with two
spares.  The Company is  currently  operating  these  spotbeams  in a seven SSPA
configuration  and preserving one spare SSPA.  AMSC-1 has also  experienced  the
failure of an L-band receiver supporting the Alaska/Hawaii  spotbeam.  While the
Company and its contractors  were not able to identify the specific cause of the
failure,  it is believed that it may be attributable to a defective receiver and
not a problem  inherent  in the design of AMSC-1.  The  Company is using a spare
back-up L-band receiver on AMSC-1 to service the  Alaska/Hawaii  spotbeam.  As a
result of  reconfiguring  AMSC-1 to operate  with five  spotbeams,  there is one
other back-up L-band receiver on AMSC-1.







                          PART II -- OTHER INFORMATION

                    Item 6. Exhibits and Reports on Form 8-K
                                  (a) Exhibits

3.1  -- Restated Certificate of Incorporation of AMSC (as restated effective May
     1,  1996)  (Incorporated  by  reference  to  Exhibit  3.1 to the  Company's
     Quarterly Report on Form 10-Q for the period ending March 31,1996 (File No.
     0-23044))

3.2  -- Amended and Restated  Bylaws of AMSC (as amended and restated  effective
     February  29,  1996)  (Incorporated  by  reference  to  Exhibit  3.2 to the
     Company's  Annual  Report on Form 10-K for the fiscal year ending  December
     31, 1995 (File No. 0-23044))

9.3  -- Standstill  Agreement  dated as of June 28, 1996,  among American Mobile
     Satellite  Corporation,  AMSC Subsidiary  Corporation,  Hughes  Electronics
     Corporation   and   Hughes   Communications    Satellite   Services,   Inc.
     (Incorporated  by  reference  to  Exhibit  X to the  Amended  and  Restated
     Schedule 13D dated July 1, 1996, filed by Hughes  Communications  Satellite
     Services,  Inc.,  Hughes  Communications,  Inc.,  Hughes Aircraft  Company,
     Hughes Electronics  Corporation and General Motors Corporation with respect
     to shares of Common Stock,  $.01 par value,  of American  Mobile  Satellite
     Corporation)

10.11a -- Amendment No. 1 dated June 28, 1996, to Right of First Offer Agreement
     among  American  Mobile  Satellite   Corporation,   Hughes   Communications
     Satellite Services,  Inc.,  Singapore  Telecommunications  Ltd.,  Satellite
     Communications  Investments  Corporation,  Space Technologies  Investments,
     Inc.,  and Transit  Communications,  Inc.  (Incorporated  by  reference  to
     Exhibit XI to the Amended  and  Restated  Schedule  13D dated July 1, 1996,
     filed  by  Hughes   Communications   Satellite   Services,   Inc.,   Hughes
     Communications,   Inc.,   Hughes  Aircraft  Company,   Hughes   Electronics
     Corporation and General Motors Corporation with respect to shares of Common
     Stock, $.01 par value, of American Mobile Satellite Corporation)

10.13* -- Amended and Restated Stock Option Plan (as amended effective April 25,
     1996) (filed herewith)

10.55--  $150,000,000  Credit  Agreement  dated as of June 28, 1996,  among AMSC
     Subsidiary  Corporation,  American Mobile Satellite Corporation,  the Banks
     Listed Therein, Morgan Guaranty Trust Company of New York, as Documentation
     Agent, and Toronto Dominion (Texas),  Inc., as Administrative  Agent (filed
     herewith)

10.56--  $75,000,000  Credit  Agreement  dated as of June 28,  1996,  among AMSC
     Subsidiary  Corporation,  American Mobile Satellite Corporation,  the Banks
     Listed Therein, Morgan Guaranty Trust Company of New York, as Documentation
     Agent, and Toronto Dominion (Texas),  Inc., as Administrative  Agent (filed
     herewith)

10.57-- Guaranty  Issuance  Agreement  dated as of June 28,  1996,  by and among
     Hughes Electronics  Corporation,  Singapore  Telecommunications Ltd., Baron
     Capital  Partners,  L.P., AMSC  Subsidiary  Corporation and American Mobile
     Satellite  Corporation  (Incorporated  by  reference  to Exhibit XII to the
     Amended  and  Restated  Schedule  13D dated July 1,  1996,  filed by Hughes
     Communications  Satellite  Services,  Inc.,  Hughes  Communications,  Inc.,
     Hughes Aircraft Company,  Hughes Electronics Corporation and General Motors
     Corporation  with  respect to shares of Common  Stock,  $.01 par value,  of
     American Mobile Satellite Corporation)

10.58--  Guaranty  dated  as of  June  28,  1996,  made  by  Hughes  Electronics
     Corporation to Toronto  Dominion  (Texas),  Inc., as  Administrative  Agent
     (filed herewith)

10.59--  Warrant  No.  1 for  the  Purchase  of  3,750,000  Shares  (subject  to
     adjustment) of Common Stock of American Mobile Satellite Corporation issued
     to Hughes  Electronics  Corporation,  dated June 28, 1996  (Incorporated by
     reference to Exhibit  XIII to the Amended and  Restated  Schedule 13D dated
     July 1, 1996,  filed by Hughes  Communications  Satellite  Services,  Inc.,
     Hughes  Communications,  Inc., Hughes Aircraft Company,  Hughes Electronics
     Corporation and General Motors Corporation with respect to shares of Common
     Stock, $.01 par value, of American Mobile Satellite Corporation)

10.60-- Registration  Rights Agreement dated as of June 28, 1996, among American
     Mobile Satellite  Corporation,  Hughes Electronics  Corporation,  Singapore
     Telecommunications  Ltd., and Baron Capital Partners, L.P. (Incorporated by
     reference  to Exhibit XIV to the Amended and  Restated  Schedule  13D dated
     July 1, 1996,  filed by Hughes  Communications  Satellite  Services,  Inc.,
     Hughes  Communications,  Inc., Hughes Aircraft Company,  Hughes Electronics
     Corporation and General Motors Corporation with respect to shares of Common
     Stock, $.01 par value, of American Mobile Satellite Corporation)

11.1 -- Computation of Net Loss Per Share (filed herewith)

27.0 -- Financial Data Schedule

99.8 -- Schedule of Exhibits  Omitted  Pursuant to  Instruction 2 to Item 601 of
     Regulation S-K (filed herewith)






SIGNATURE

Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned thereunto duly authorized.

                      AMERICAN MOBILE SATELLITE CORPORATION
                                    (Registrant)


Date: August 14, 1996               /s/Patrick C. FitzPatrick
                                    Patrick C. FitzPatrick
                   Chief Financial Officer and Vice President
                          (principal financial officer)



                                    /s/Christopher Colavito
                                    Controller and Vice President
                                    (principal accounting officer)








                                  EXHIBIT INDEX

Exhibit
Number                               Exhibit

3.1  -- Restated Certificate of Incorporation of AMSC (as restated effective May
     1,  1996)  (Incorporated  by  reference  to  Exhibit  3.1 to the  Company's
     Quarterly  Report on Form 10-Q for the period  ending  March 31, 1996 (File
     No. 0-23044))

3.2  -- Amended and Restated  Bylaws of AMSC (as amended and restated  effective
     February  29,  1996)  (Incorporated  by  reference  to  Exhibit  3.2 to the
     Company's  Annual  Report on Form 10-K for the fiscal year ending  December
     31, 1995 (File No. 0-23044))

9.3  -- Standstill  Agreement  dated as of June 28, 1996,  among American Mobile
     Satellite  Corporation,  AMSC Subsidiary  Corporation,  Hughes  Electronics
     Corporation   and   Hughes   Communications    Satellite   Services,   Inc.
     (Incorporated  by  reference  to  Exhibit  X to the  Amended  and  Restated
     Schedule 13D dated July 1, 1996, filed by Hughes  Communications  Satellite
     Services,  Inc.,  Hughes  Communications,  Inc.,  Hughes Aircraft  Company,
     Hughes Electronics  Corporation and General Motors Corporation with respect
     to shares of Common Stock,  $.01 par value,  of American  Mobile  Satellite
     Corporation)

10.11a -- Amendment No. 1 dated June 28, 1996, to Right of First Offer Agreement
     among  American  Mobile  Satellite   Corporation,   Hughes   Communications
     Satellite Services,  Inc.,  Singapore  Telecommunications  Ltd.,  Satellite
     Communications  Investments  Corporation,  Space Technologies  Investments,
     Inc.,  and Transit  Communications,  Inc.  (Incorporated  by  reference  to
     Exhibit XI to the Amended  and  Restated  Schedule  13D dated July 1, 1996,
     filed  by  Hughes   Communications   Satellite   Services,   Inc.,   Hughes
     Communications,   Inc.,   Hughes  Aircraft  Company,   Hughes   Electronics
     Corporation and General Motors Corporation with respect to shares of Common
     Stock, $.01 par value, of American Mobile Satellite Corporation)

10.13* -- Amended and Restated Stock Option Plan (as amended effective April 25,
     1996) (filed herewith)

10.55--  $150,000,000  Credit  Agreement  dated as of June 28, 1996,  among AMSC
     Subsidiary  Corporation,  American Mobile Satellite Corporation,  the Banks
     Listed Therein, Morgan Guaranty Trust Company of New York, as Documentation
     Agent, and Toronto Dominion (Texas),  Inc., as Administrative  Agent (filed
     herewith)

10.56--  $75,000,000  Credit  Agreement  dated as of June 28,  1996,  among AMSC
     Subsidiary  Corporation,  American Mobile Satellite Corporation,  the Banks
     Listed Therein, Morgan Guaranty Trust Company of New York, as Documentation
     Agent, and Toronto Dominion (Texas),  Inc., as Administrative  Agent (filed
     herewith)

10.57-- Guaranty  Issuance  Agreement  dated as of June 28,  1996,  by and among
     Hughes Electronics  Corporation,  Singapore  Telecommunications Ltd., Baron
     Capital  Partners,  L.P., AMSC  Subsidiary  Corporation and American Mobile
     Satellite  Corporation  (Incorporated  by  reference  to Exhibit XII to the
     Amended  and  Restated  Schedule  13D dated July 1,  1996,  filed by Hughes
     Communications  Satellite  Services,  Inc.,  Hughes  Communications,  Inc.,
     Hughes Aircraft Company,  Hughes Electronics Corporation and General Motors
     Corporation  with  respect to shares of Common  Stock,  $.01 par value,  of
     American Mobile Satellite Corporation)

10.58--  Guaranty  dated  as of  June  28,  1996,  made  by  Hughes  Electronics
     Corporation to Toronto  Dominion  (Texas),  Inc., as  Administrative  Agent
     (filed herewith)

10.59--  Warrant  No.  1 for  the  Purchase  of  3,750,000  Shares  (subject  to
     adjustment) of Common Stock of American Mobile Satellite Corporation issued
     to Hughes  Electronics  Corporation,  dated June 28, 1996  (Incorporated by
     reference to Exhibit  XIII to the Amended and  Restated  Schedule 13D dated
     July 1, 1996,  filed by Hughes  Communications  Satellite  Services,  Inc.,
     Hughes  Communications,  Inc., Hughes Aircraft Company,  Hughes Electronics
     Corporation and General Motors Corporation with respect to shares of Common
     Stock, $.01 par value, of American Mobile Satellite Corporation)

10.60-- Registration  Rights Agreement dated as of June 28, 1996, among American
     Mobile Satellite  Corporation,  Hughes Electronics  Corporation,  Singapore
     Telecommunications  Ltd., and Baron Capital Partners, L.P. (Incorporated by
     reference  to Exhibit XIV to the Amended and  Restated  Schedule  13D dated
     July 1, 1996,  filed by Hughes  Communications  Satellite  Services,  Inc.,
     Hughes  Communications,  Inc., Hughes Aircraft Company,  Hughes Electronics
     Corporation and General Motors Corporation with respect to shares of Common
     Stock, $.01 par value, of American Mobile Satellite Corporation)

11.1 -- Computation of Net Loss Per Share (filed herewith)

27.0 -- Financial Data Schedule

99.8 -- Schedule of Exhibits  Omitted  Pursuant to  Instruction 2 to Item 601 of
     Regulation S-K (filed herewith)