<Page>

                                                                    EXHIBIT 3.31

                                     BY-LAWS

                                       OF

                        AVIATION ACQUISITION CORPORATION

<Page>

                                     BY-LAWS

                                       OF

                        AVIATION ACQUISITION CORPORATION

                                 April 16, 2001

                                   ARTICLE I.

OFFICES

     1.   The registered office shall be in the City of Wilmington, County of
New Castle, State of Delaware.

     2.   The Corporation may also have offices at such other places both within
and without the State of Delaware as the Board of Directors may from time to
time determine or the business of the Corporation may require.

                                   ARTICLE II.

MEETINGS OF STOCKHOLDERS

     1.   Meetings of stockholders shall be held at any place within or outside
the State of Delaware designated by the Board of Directors. In the absence of
any such designation, stockholders' meetings shall be held at the principal
executive office of the Corporation.

     2.   The annual meeting of stockholders shall be held each year on a date
and a time designated by the Board of Directors. At each annual meeting
directors shall be elected and any other proper business may be transacted.

     3.   A majority of the stock issued and outstanding and entitled to vote at
any meeting of stockholders, the holders of which are present in person or
represented by proxy, shall constitute a quorum for the transaction of business
except as otherwise provided by law, by the Certificate of Incorporation, or by
these By-Laws. A quorum, once established, shall not be broken by the withdrawal
of enough votes to leave less than a quorum and the votes present may continue
to transact business until adjournment. If, however, such quorum shall not be
present or represented at any meeting of the stockholders, a majority of the
voting stock represented in person or by proxy may adjourn the meeting from time
to time, without notice other than announcement at the meeting, until a quorum
shall be present or represented. At such adjourned meeting at which a quorum
shall be present or represented, any business may be transacted which might have
been transacted at the meeting as originally notified. If the adjournment is for
more than thirty days, or if after the adjournment a new record date is fixed
for the adjourned meeting, a notice of the adjourned meeting shall be given to
each stockholder of record entitled to vote thereat.

<Page>

     4.   When a quorum is present at any meeting, the vote of the holders of a
majority of the stock having voting power present in person or represented by
proxy shall decide any question brought before such meeting, unless the question
is one upon which by express provision of the statutes, or the Certificate of
Incorporation, or these By-Laws, a different vote is required in which case such
express provision shall govern and control the decision of such question.

     5.   At each meeting of the stockholders, each stockholder having the right
to vote may vote in person or may authorize another person or persons to act for
him by proxy appointed by an instrument in writing subscribed by such
stockholder and bearing a date not more than three years prior to said meeting,
unless said instrument provides for a longer period. All proxies must be filed
with the Secretary of the Corporation at the beginning of each meeting in order
to be counted in any vote at the meeting. Each stockholder shall have one vote
for each share of stock having voting power, registered in his name on the books
of the Corporation on the record date set by the Board of Directors as provided
in Article V, Section 6 hereof. All elections shall be had and all questions
decided by a plurality vote.

     6.   Special meetings of the stockholders, for any purpose, or purposes,
unless otherwise prescribed by statute or by the Certificate of Incorporation,
may be called by the President and shall be called by the President or the
Secretary at the request in writing of a majority of the Board of Directors, or
at the request in writing of stockholders owning a majority in amount of the
entire capital stock of the Corporation issued and outstanding and entitled to
vote. Such request shall state the purpose or purposes of the proposed meeting.
Business transacted at any special meeting of stockholders shall be limited to
the purposes stated in the notice.

     7.   Whenever stockholders are required or permitted to take any action at
a meeting, a written notice of the meeting shall be given which notice shall
state the place, date and hour of the meeting, and, in the case of a special
meeting, the purpose or purposes for which the meeting is called. The written
notice of any meeting shall be given to each stockholder entitled to vote at
such meeting not less than ten nor more than sixty days before the date of the
meeting. If mailed, notice is given when deposited in the United States mail,
postage prepaid, directed to the stockholder at his address as it appears on the
records of the Corporation.

     8.   The officer who has charge of the stock ledger of the Corporation
shall prepare and make, at least ten days before every meeting of stockholders,
a complete list of the stockholders entitled to vote at the meeting, arranged in
alphabetical order, and showing the address of each stockholder and the number
of shares registered in the name of each stockholder. Such list shall be open to
the examination of any stockholder, for any purpose germane to the meeting,
during ordinary business hours, for a period of at least ten days prior to the
meeting, either at a place within the city where the meeting is to be held,
which place shall be specified in the notice of the meeting, or, if not so
specified, at the place where the meeting is to be held. The list shall also be
produced and kept at the time and place of the meeting during the whole time
thereof, and may be inspected by any stockholder who is present.

     9.   Unless otherwise provided in the Certificate of Incorporation, any
action required to be taken at any annual or special meeting of stockholders of
the Corporation, or any action

                                        2
<Page>

which may be taken at any annual or special meeting of such stockholders, may be
taken without a meeting, without prior notice and without a vote, if a consent
in writing, setting forth the action so taken, shall be signed by the holders of
outstanding stock having not less than the minimum number of votes that would be
necessary to authorize or take such action at a meeting at which all shares
entitled to vote thereon were present and voted. Prompt notice of the taking of
the corporate action without a meeting by less than unanimous written consent
shall be given to those stockholders who have not consented in writing.

                                  ARTICLE III.

DIRECTORS

     1.   The number of directors which shall constitute the whole Board shall
be not less than one (1) nor more than nine (9). The number of directors shall
be fixed from time to time by the Board and the first Board shall consist of
three (3) directors. The directors need not be stockholders. The directors shall
be elected at the annual meeting of the stockholders, except as provided in
Section 2 of this Article, and each director elected shall hold office until his
successor is elected and qualified; provided, however, that unless otherwise
restricted by the Certificate of Incorporation or by law, any director or the
entire Board of Directors may be removed, either with or without cause, from the
Board of Directors at any meeting of stockholders by a majority of the stock
represented and entitled to vote thereat.

     2.   Vacancies on the Board of Directors by reason of death, resignation,
retirement, disqualification, removal from office, or otherwise, and newly
created directorships resulting from any increase in the authorized number of
directors may be filled by a majority of the directors then in office, although
less than a quorum, or by a sole remaining director. The directors so chosen
shall hold office until the next annual election of directors and until their
successors are duly elected and shall qualify, unless sooner displaced. If there
are no directors in office, then an election of directors may be held in the
manner provided by statute. If, at the time of filling any vacancy or any newly
created directorship, the directors then in office shall constitute less than a
majority of the whole Board (as constituted immediately prior to any such
increase), the Court of Chancery may, upon application of any stockholder or
stockholders holding at least ten (10) percent of the total number of the shares
at the time outstanding having the right to vote for such directors, summarily
order an election to be held to fill any such vacancies or newly created
directorships, or to replace the directors chosen by the directors then in
office.

     3.   The property and business of the Corporation shall be managed by or
under the direction of its Board of Directors. In addition to the powers and
authorities by these By-Laws expressly conferred upon them, the Board may
exercise all such powers of the Corporation and do all such lawful acts and
things as are not by statute or by the Certificate of Incorporation or by these
By-Laws directed or required to be exercised or done by the stockholders.

                                        3
<Page>

MEETINGS OF THE BOARD OF DIRECTORS

     4.   The directors may hold their meetings and have one or more offices,
and keep the books of the Corporation outside of the State of Delaware.

     5.   Regular meetings of the Board of Directors may be held without notice
at such time and place as shall from time to time be determined by the Board.

     6.   Special meetings of the Board of Directors may be called by the
President on forty-eight hours' notice to each director, either personally or by
mail or by telegram; special meetings shall be called by the President or the
Secretary in like manner and on like notice on the written request of two
directors unless the Board consists of only one director; in which case special
meetings shall be called by the President or Secretary in like manner or on like
notice on the written request of the sole director.

     7.   At all meetings of the Board of Directors a majority of the authorized
number of directors shall be necessary and sufficient to constitute a quorum for
the transaction of business, and the vote of a majority of the directors present
at any meeting at which there is a quorum, shall be the act of the Board of
Directors, except as may be otherwise specifically provided by statute, by the
Certificate of Incorporation or by these By-Laws. If a quorum shall not be
present at any meeting of the Board of Directors, the directors present thereat
may adjourn the meeting from time to time, without notice other than
announcement at the meeting, until a quorum shall be present. If only one
director is authorized, such sole director shall constitute a quorum.

     8.   Unless otherwise restricted by the Certificate of Incorporation or
these By-Laws, any action required or permitted to be taken at any meeting of
the Board of Directors or of any committee thereof may be taken without a
meeting, if all members of the Board or committee, as the case may be, consent
thereto in writing, and the writing or writings are filed with the minutes of
proceedings of the Board or committee.

     9.   Unless otherwise restricted by the Certificate of Incorporation or
these By-Laws, members of the Board of Directors, or any committee designated by
the Board of Directors, may participate in a meeting of the Board of Directors,
or any committee, by means of conference telephone or similar communications
equipment by means of which all persons participating in the meeting can hear
each other, and such participation in a meeting shall constitute presence in
person at such meeting.

COMMITTEES OF DIRECTORS

     10.  The Board of Directors may, by resolution passed by a majority of the
whole Board, designate one or more committees, each such committee to consist of
one or more of the directors of the Corporation. The Board may designate one or
more directors as alternate members of any committee, who may replace any absent
or disqualified member at any meeting of the committee. In the absence or
disqualification of a member of a committee, the member or members thereof
present at any meeting and not disqualified from voting, whether or not he or
they constitute a quorum, may unanimously appoint another member of the Board of
Directors to act at the meeting in the place of any such absent or disqualified
member. Any such committee, to the extent provided in the resolution of the
Board of Directors, shall have and may exercise all

                                        4
<Page>

the powers and authority of the Board of Directors in the management of the
business and affairs of the Corporation, and may authorize the seal of the
Corporation to be affixed to all papers which may require it; but no such
committee shall have the power or authority in reference to amending the
Certificate of Incorporation, adopting an agreement of merger or consolidation,
recommending to the stockholders the sale, lease or exchange of all or
substantially all of the Corporation's property and assets, recommending to the
stockholders a dissolution of the Corporation or a revocation of a dissolution,
or amending the By-Laws of the Corporation; and, unless the resolution or the
Certificate of Incorporation expressly so provide, no such committee shall have
the power or authority to declare a dividend or to authorize the issuance of
stock.

     11.  Each committee shall keep regular minutes of its meetings and report
the same to the Board of Directors when required.

COMPENSATION OF DIRECTORS

     12.  Unless otherwise restricted by the Certificate of Incorporation or
these By-Laws, the Board of Directors shall have the authority to fix the
compensation of directors. The directors may be paid their expenses, if any, of
attendance at each meeting of the Board of Directors and may be paid a fixed sum
for attendance at each meeting of the Board of Directors or a stated salary as
director. No such payment shall preclude any director from serving the
Corporation in any other capacity and receiving compensation therefor. Members
of special or standing committees may be allowed like compensation for attending
committee meetings.

                                   ARTICLE IV.

OFFICERS

     1.   The officers of the Corporation shall be chosen by the Board of
Directors and shall include a President, a Secretary, and a Treasurer. The
Corporation may also have at the discretion of the Board of Directors such other
officers as are desired, including a Chairman of the Board, one or more Vice
Presidents, one or more Assistant Secretaries and Assistant Treasurers, and such
other officers as may be appointed in accordance with the provisions of Section
3 hereof. In the event there are two or more Vice Presidents, then one or more
may be designated as Executive Vice President, Senior Vice President, or other
similar or dissimilar title. At the time of the election of officers, the
directors may by resolution determine the order of their rank. Any number of
offices may be held by the same person, unless the Certificate of Incorporation
or these By-Laws otherwise provide.

     2.   The Board of Directors, at its first meeting after each annual meeting
of stockholders, shall choose the officers of the Corporation.

     3.   The Board of Directors may appoint such other officers and agents as
it shall deem necessary who shall hold their offices for such terms and shall
exercise such powers and perform such duties as shall be determined from time to
time by the Board.

     4.   The salaries of all officers and agents of the Corporation shall be
fixed by the Board of Directors.

                                        5
<Page>

     5.   The officers of the Corporation shall hold office until their
successors are chosen and qualify in their stead. Any officer elected or
appointed by the Board of Directors may be removed at any time by the
affirmative vote of a majority of the Board of Directors. If the office of any
officer or officers becomes vacant for any reason, the vacancy shall be filled
by the Board of Directors.

CHAIRMAN OF THE BOARD

     6.   The Chairman of the Board, if such an officer be elected, shall, if
present, preside at all meetings of the Board of Directors and exercise and
perform such other powers and duties as may be from time to time assigned to him
by the Board of Directors or prescribed by these By-Laws. If there is no
President, the Chairman of the Board shall in addition be the Chief Executive
Officer of the Corporation and shall have the powers and duties prescribed in
Section 7 of this Article IV.

PRESIDENT

     7.   Subject to such supervisory powers, if any, as may be given by the
Board of Directors to the Chairman of the Board, if there be such an officer,
the President shall be the Chief Executive Officer of the Corporation and shall,
subject to the control of the Board of Directors, have general supervision,
direction and control of the business and officers of the Corporation. He shall
preside at all meetings of the stockholders and, in the absence of the Chairman
of the Board, or if there be none, at all meetings of the Board of Directors. He
shall be an ex-officio member of all committees and shall have the general
powers and duties of management usually vested in the office of President and
Chief Executive Officer of corporations, and shall have such other powers and
duties as may be prescribed by the Board of Directors or these By-Laws.

VICE PRESIDENTS

     8.   In the absence or disability of the President, the Vice Presidents in
order of their rank as fixed by the Board of Directors, or if not ranked, the
Vice President designated by the Board of Directors, shall perform all the
duties of the President, and when so acting shall have all the powers of and be
subject to all the restrictions upon the President. The Vice Presidents shall
have such other duties as from time to time may be prescribed for them,
respectively, by the Board of Directors.

                                        6
<Page>

SECRETARY AND ASSISTANT SECRETARY

     9.   The Secretary shall attend all sessions of the Board of Directors and
all meetings of the stockholders and record all votes and the minutes of all
proceedings in a book to be kept for that purpose; and shall perform like duties
for the standing committees when required by the Board of Directors. He shall
give, or cause to be given, notice of all meetings of the stockholders and of
the Board of Directors, and shall perform such other duties as may be prescribed
by the Board of Directors or these By-Laws. He shall keep in safe custody the
seal of the Corporation, and when authorized by the Board, affix the same to any
instrument requiring it, and when so affixed it shall be attested by his
signature or by the signature of an Assistant Secretary. The Board of Directors
may give general authority to any other officer to affix the seal of the
Corporation and to attest the affixing by his signature.

     10.  The Assistant Secretary, or if there be more than one, the Assistant
Secretaries in the order determined by the Board of Directors, or if there be no
such determination, the Assistant Secretary designated by the Board of
Directors, shall, in the absence or disability of the Secretary, perform the
duties and exercise the powers of the Secretary and shall perform such other
duties and have such other powers as the Board of Directors may from time to
time prescribe.

TREASURER AND ASSISTANT TREASURER

     11.  The Treasurer shall have the custody of the corporate funds and
securities and shall keep full and accurate accounts of receipts and
disbursements in books belonging to the Corporation and shall deposit all
moneys, and other valuable effects in the name and to the credit of the
Corporation, in such depositories as may be designated by the Board of
Directors. He shall disburse the funds of the Corporation as may be ordered by
the Board of Directors, taking proper vouchers for such disbursements, and shall
render to the Board of Directors, at its regular meetings, or when the Board of
Directors so requires, an account of all his transactions as Treasurer and of
the financial condition of the Corporation. If required by the Board of
Directors, he shall give the Corporation a bond, in such sum and with such
surety or sureties as shall be satisfactory to the Board of Directors, for the
faithful performance of the duties of his office and for the restoration to the
Corporation, in case of his death, resignation, retirement or removal from
office, of all books, papers, vouchers, money and other property of whatever
kind in his possession or under his control belonging to the Corporation.

     12.  The Assistant Treasurer, or if there shall be more than one, the
Assistant Treasurers in the order determined by the Board of Directors, or if
there be no such determination, the Assistant Treasurer designated by the Board
of Directors, shall, in the absence or disability of the Treasurer, perform the
duties and exercise the powers of the Treasurer and shall perform such other
duties and have such other powers as the Board of Directors may from time to
time prescribe.

                                        7
<Page>

                                   ARTICLE V.

CERTIFICATES OF STOCK

     1.   Every holder of stock of the Corporation shall be entitled to have a
certificate signed by, or in the name of the Corporation by, the Chairman or
Vice Chairman of the Board of Directors, or the President or a Vice President,
and by the Secretary or an Assistant Secretary, or the Treasurer or an Assistant
Treasurer of the Corporation, certifying the number of shares represented by the
certificate owned by such stockholder in the Corporation.

     2.   Any or all of the signatures on the certificate may be a facsimile. In
case any officer, transfer agent, or registrar who has signed or whose facsimile
signature has been placed upon a certificate shall have ceased to be such
officer, transfer agent, or registrar before such certificate is issued, it may
be issued by the Corporation with the same effect as if he were such officer,
transfer agent, or registrar at the date of issue.

     3.   If the Corporation shall be authorized to issue more than one class of
stock or more than one series of any class, the powers, designations,
preferences and relative, participating, optional or other special rights of
each class of stock or series thereof and the qualification, limitations or
restrictions of such preferences and/or rights shall be set forth in full or
summarized on the face or back of the certificate which the Corporation shall
issue to represent such class or series of stock, provided that, except as
otherwise provided in Section 202 of the General Corporation Law of Delaware, in
lieu of the foregoing requirements, there may be set forth on the face or back
of the certificate which the Corporation shall issue to represent such class or
series of stock, a statement that the Corporation will furnish without charge to
each stockholder who so requests the powers, designations, preferences and
relative, participating, optional or other special rights of each class of stock
or series thereof and the qualifications, limitations or restrictions of such
preferences and/or rights.

LOST, STOLEN OR DESTROYED CERTIFICATES

     4.   The Board of Directors may direct a new certificate or certificates to
be issued in place of any certificate or certificates theretofore issued by the
Corporation alleged to have been lost, stolen or destroyed, upon the making of
an affidavit of that fact by the person claiming the certificate of stock to be
lost, stolen or destroyed. When authorizing such issue of a new certificate or
certificates, the Board of Directors may, in its discretion and as a condition
precedent to the issuance thereof, require the owner of such lost, stolen or
destroyed certificate or certificates, or his legal representative, to advertise
the same in such manner as it shall require and/or to give the Corporation a
bond in such sum as it may direct as indemnity against any claim that may be
made against the Corporation with respect to the certificate alleged to have
been lost, stolen or destroyed.

                                        8
<Page>

TRANSFERS OF STOCK

     5.   Upon surrender to the Corporation, or the transfer agent of the
Corporation, of a certificate for shares duly endorsed or accompanied by proper
evidence of succession, assignation or authority to transfer, it shall be the
duty of the Corporation to issue a new certificate to the person entitled
thereto, cancel the old certificate and record the transaction upon its books.

FIXING RECORD DATE

     6.   In order that the Corporation may determine the stockholders entitled
to notice of or to vote at any meeting of the stockholders, or any adjournment
thereof, or to express consent to corporate action in writing without a meeting,
or entitled to receive payment of any dividend or other distribution or
allotment of any rights, or entitled to exercise any rights in respect of any
change, conversion or exchange of stock or for the purpose of any other lawful
action, the Board of Directors may fix a record date which shall not be more
than sixty nor less than ten days before the date of such meeting, nor more than
sixty days prior to any other action. A determination of stockholders of record
entitled to notice of or to vote at a meeting of stockholders shall apply to any
adjournment of the meeting; provided, however, that the Board of Directors may
fix a new record date for the adjourned meeting.

REGISTERED STOCKHOLDERS

     7.   The Corporation shall be entitled to treat the holder of record of any
share or shares of stock as the holder in fact thereof and accordingly shall not
be bound to recognize any equitable or other claim or interest in such share on
the part of any other person, whether or not it shall have express or other
notice thereof, save as expressly provided by the laws of the State of Delaware.

                                   ARTICLE VI.

GENERAL PROVISIONS

DIVIDENDS

     1.   Dividends upon the capital stock of the Corporation, subject to the
provisions of the Certificate of Incorporation, if any, may be declared by the
Board of Directors at any regular or special meeting, pursuant to law. Dividends
may be paid in cash, in property, or in shares of the capital stock, subject to
the provisions of the Certificate of Incorporation.

     2.   Before payment of any dividend there may be set aside out of any funds
of the Corporation available for dividends such sum or sums as the directors
from time to time, in their absolute discretion, think proper as a reserve fund
to meet contingencies, or for equalizing dividends, or for repairing or
maintaining any property of the Corporation, or for such other purpose as the
directors shall think conducive to the interests of the Corporation, and the
directors may abolish any such reserve.

                                        9
<Page>

CHECKS

     3.   All checks or demands for money and notes of the Corporation shall be
signed by such officer or officers as the Board of Directors may from time to
time designate.

FISCAL YEAR

     4.   The fiscal year of the Corporation shall be fixed by resolution of the
Board of Directors.

SEAL

     5.   The corporate seal shall have inscribed thereon the name of the
Corporation, the year of its organization and the words "Corporate Seal,
Delaware". Said seal may be used by causing it or a facsimile thereof to be
impressed or affixed or reproduced or otherwise.

NOTICES

     6.   Whenever, under the provisions of the statutes or of the Certificate
of Incorporation or of these By-Laws, notice is required to be given to any
director or stockholder, it shall not be construed to mean personal notice, but
such notice may be given in writing, by mail, addressed to such director or
stockholder, at his address as it appears on the records of the Corporation,
with postage thereon prepaid, and such notice shall be deemed to be given at the
time when the same shall be deposited in the United States mail or with an
overnight courier service. Notice to directors may also be given personally or
by telephone, telegram, telex or facsimile.

     7.   Whenever any notice is required to be given under the provisions of
the statutes or of the Certificate of Incorporation or of these By-Laws, a
waiver thereof in writing, signed by the person or persons entitled to said
notice, whether before or after the time stated therein, shall be deemed to be
equivalent.

ANNUAL STATEMENT

     8.   The Board of Directors shall present at each annual meeting, and at
any special meeting of the stockholders when called for by vote of the
stockholders, a full and clear statement of the business and condition of the
Corporation.

                                  ARTICLE VII.

INDEMNIFICATION

     1.   Except as provided in Section 3 of this Article VII, the Corporation
shall indemnify any person who was or is a party or is threatened to be made a
party to any threatened, pending or completed action, suit or proceeding,
whether civil, criminal, administrative or investigative (other than an action
by or in the right of the Corporation) by reason of the fact that he is or was a
director, officer or employee of the Corporation, or is or was serving at the
request

                                       10
<Page>

of the Corporation as a director, officer, employee or agent of another
corporation, partnership, joint venture, trust or other enterprise, against
expenses (including attorneys' fees), judgments, fines and amounts paid in
settlement actually and reasonably incurred by him in connection with such
action, suit or proceeding if he acted in good faith and in a manner he
reasonably believed to be in or not opposed to the best interests of the
Corporation, and, with respect to any criminal action or proceeding, had no
reasonable cause to believe his conduct was unlawful. The termination of any
action, suit or proceeding by judgment, order, settlement, conviction, or upon a
plea of nolo contendere or its equivalent, shall not, of itself, create a
presumption that the person did not act in good faith and in a manner which he
reasonably believed to be in or not opposed to the best interests of the
Corporation, and, with respect to any criminal action or proceeding, had
reasonable cause to believe that his conduct was unlawful.

     2.   Except as provided in Section 3 of this Article VII, the Corporation
shall indemnify any person who was or is a party or is threatened to be made a
party to any threatened, pending or completed action or suit by or in the right
of the Corporation to procure a judgment in its favor by reason of the fact that
he is or was a director, officer or employee of the Corporation, or is or was
serving at the request of the Corporation as a director, officer, employee or
agent of another corporation, partnership, joint venture, trust or other
enterprise against expenses (including attorneys' fees) actually and reasonably
incurred by him in connection with the defense or settlement of such action or
suit if he acted in good faith and in a manner he reasonably believed to be in
or not opposed to the best interests of the Corporation and except that no such
indemnification shall be made in respect of any claim, issue or matter as to
which such person shall have been adjudged to be liable for negligence or
misconduct in the performance of his duty to the Corporation unless and only to
the extent that the Court of Chancery of Delaware or the court in which such
action or suit was brought shall determine upon application that, despite the
adjudication of liability but in view of all the circumstances of the case, such
person is fairly and reasonably entitled to indemnity for such expenses which
such Court of Chancery or such other court shall deem proper.

     3.   Notwithstanding anything to the contrary in this Article VII, (a)
except as provided in Section 7 with respect to proceedings to enforce rights to
indemnification, the Corporation shall indemnify any officer, director or
employee in connection with any action, suit or proceeding (or part thereof)
initiated by such person only if such action, suit or proceeding (or part
thereof) was authorized by the Board of Directors and (b) any indemnification by
reason of the fact that such person is or was serving at the request of the
Corporation as a director, officer, employee or agent of another corporation,
partnership, joint venture, trust or other enterprise shall be reduced by the
amount of any such expenses, judgments, fines and amounts paid in settlement for
which such person has otherwise received payment (under any insurance policy,
charter or by-law provision or otherwise). In the event of any payment by the
Corporation to any person pursuant to this Article VII by reason of the fact
that such person was serving at the request of the Corporation as a director,
officer, employee or agent of another corporation, partnership, joint venture,
trust or other enterprise, the Corporation shall be subrogated to the extent of
such payment to all of the rights of recovery of such person, who shall, as a
condition to payment under this Article VII, execute all papers required and do
everything that may be necessary to secure such rights, including the execution
of such documents necessary to enable the Corporation effectively to bring suit
to enforce such rights.

                                       11
<Page>

     4.   Any indemnification under Sections 1 or 2 or this Article VII (unless
ordered by a court) shall be made by the Corporation only as authorized in the
specific case upon a determination that indemnification of the present or former
director, officer, employee or agent is proper in the circumstances because he
has met the applicable standard of conduct set forth in Sections 1 or 2, as
applicable. Such determination shall be made with respect to a person who is a
director or officer at the time of such determination (a) by the Board of
Directors by a majority vote of directors who were not parties to such action,
suit or proceeding, even though less than a quorum, or (b) if there are no such
directors, or if such directors so direct, by independent legal counsel in a
written opinion, or (c) by the stockholders.

     5.   To the extent that a present or former director, officer or employee
of the Corporation shall be successful on the merits or otherwise in defense of
any action, suit or proceeding referred to in Section 1 or 2 of this Article
VII, or in defense of any claim, issue or matter therein, he shall be
indemnified against expenses (including attorneys' fees) actually and reasonably
incurred by him in connection therewith.

     6.   Expenses (including attorneys' fees) incurred by a present or former
director, officer or employee in defending a civil or criminal action, suit or
proceeding shall be paid by the Corporation in advance of the final disposition
of such action, suit or proceeding; provided, however, that if the Delaware
General Corporation Law so requires, an advance of expenses incurred by any such
person in his capacity as a present director or officer (and not in any other
capacity in which service was or is rendered by such person, including without
limitation any employee benefit plan) shall be made only upon receipt by the
Corporation of an undertaking by or on behalf of such director or officer to
repay such amount if it shall ultimately be determined that he is not entitled
to be indemnified by the Corporation as authorized in this Article VII.

     7.   If a claim for indemnification under Section 1, 2 or 5 or for
advancement of expenses under Section 6 is not paid in full by the Corporation
within sixty (60) days after a written claim has been received by the
Corporation, except in the case of a claim for an advancement of expenses, in
which case the applicable period shall be twenty (20) days, the present or
former director, officer or employee may at any time thereafter bring suit
against the Corporation to recover the unpaid amount of the claim. If successful
in whole or in part in any such suit or in a suit brought by the Corporation to
recover an advancement of expenses pursuant to the terms of an undertaking, the
present or former director, officer or employee shall also be entitled to be
paid the expense of prosecuting or defending such suit. In any suit brought by
such person to enforce a right to indemnification hereunder (but not in a suit
brought by such person to enforce a right to an advancement of expenses) it
shall be a defense that such person has not met the applicable standard of
conduct set forth in the Delaware General Corporation Law. Neither the failure
of the Corporation (including its Board of Directors, independent legal counsel
or stockholders) to have made a determination prior to the commencement of such
suit that indemnification of such person is proper in the circumstances because
such person has met the applicable standard of conduct set forth in the Delaware
General Corporation Law, nor an actual determination by the Corporation
(including its Board of Directors, independent legal counsel or stockholders)
that such person has not met such applicable standard of conduct, shall create a
presumption that such person has not met the applicable standard of conduct or,
in the case of such a suit brought by such person, be a defense to such suit. In
any suit brought by such person to enforce a right hereunder, or by the
Corporation to recover an advancement of

                                       12
<Page>

expenses pursuant to the terms of an undertaking, the burden of proving that
such person is not entitled to be indemnified or to such advancement of expenses
under this Article VII or otherwise shall be on the Corporation.

     8.   The rights to indemnification and to the advancement of expenses
provided by this Article VII shall not be exclusive of, and shall be in addition
to, any other rights to which any person may have or hereafter acquire under any
by-law, agreement, vote of stockholders or disinterested directors or otherwise,
both as to action in his official capacity and as to action in another capacity
while holding such office, and shall continue as to a person who has ceased to
be a director, officer or employee and shall inure to the benefit of the heirs,
executors and administrators of such a person.

     9.   The Corporation may, to the extent authorized from time to time by the
Board of Directors (and, with respect to advancement of expenses, upon such
terms and conditions, if any, as the Board deems appropriate), grant rights to
indemnification, and to the advancement of expenses, to any present or former
agent of the Corporation to the fullest extent of the provisions hereof with
respect to the indemnification and advancement of expense of present and former
directors, officers and employees of the Corporation.

     10.  The Board of Directors may authorize, by a vote of a majority of a
quorum of the Board of Directors, the Corporation to purchase and maintain
insurance on behalf of any person who is or was a director, officer, employee or
agent of the Corporation, or is or was serving at the request of the Corporation
as a director, officer, employee or agent of another Corporation, partnership,
joint venture, trust or other enterprise against any liability asserted against
him and incurred by him in any such capacity, or arising out of his status as
such, whether or not the Corporation would have the power to indemnify him
against such liability under the provisions of this Article VII.

     11.  For purposes of this Article VII, references to "other enterprises"
shall include employee benefit plans; references to "fines" shall include any
excise taxes assessed on a person with respect to an employee benefit plan; and
references to "serving at the request of the Corporation" shall include service
as a director, officer, employee or agent of the Corporation which imposes
duties on, or involves services by, such director, officer, employee or agent
with respect to an employee benefit plan, its participants or beneficiaries; and
a person who acted in good faith and in a manner he reasonably believed to be in
the interest of the participants and beneficiaries of an employee benefit plan
shall be deemed to have acted in a manner "not opposed to the best interests of
the Corporation" as referred to in this Article VII.

     12.  If any part of this Article VII shall be found, in any action, suit or
proceeding or appeal therefrom or in any other circumstances or as to any
particular officer, director, employee or agent to be unenforceable, ineffective
or invalid for any reason, the enforceability, effect and validity of the
remaining parts or of such parts in other circumstances shall not be affected,
except as otherwise required by applicable law.

     13.  The foregoing provisions of this Article VII shall be deemed to
constitute an agreement between the Corporation and each of the persons entitled
to indemnification hereunder, for as long as such provisions remain in effect.
Any amendment to the foregoing

                                       13
<Page>

provisions of this Article VII which limits or otherwise adversely affects the
scope of indemnification or rights of any such persons hereunder shall, as to
such persons, apply only to claims arising, or causes of action based on actions
or events occurring, after such amendment and delivery of notice of such
amendment is given to the person or persons whose rights hereunder are adversely
affected. Any person entitled to indemnification under the foregoing provisions
of this Article VII shall, as to any act or omission occurring prior to the date
of receipt of such notice, be entitled to indemnification to the same extent as
had such provisions continued as By-laws of the Corporation without such
amendment.

                                  ARTICLE VIII.

AMENDMENTS

     1.   These By-Laws may be altered, amended or repealed or new By-Laws may
be adopted by the stockholders or by the Board of Directors, when such power is
conferred upon the Board of Directors by the Certificate of Incorporation, at
any regular meeting of the stockholders or of the Board of Directors or at any
special meeting of the stockholders or of the Board of Directors if notice of
such alteration, amendment, repeal or adoption of new By-Laws be contained in
the notice of such special meeting. If the power to adopt, amend or repeal
By-Laws is conferred upon the Board of Directors by the Certificate of
Incorporation it shall not divest or limit the power of the stockholders to
adopt, amend or repeal By-Laws.

                                       14