Document:

AMENDMENT TO RIGHTS AGREEMENT

          This Amendment to Rights Agreement, effective as of the 30th day of
September, 2002, is made and entered into by and among U.S. Bank, National
Association ("U.S. Bank"), Midwest Express Holdings, Inc., a Wisconsin
corporation (the "Company"), and American Stock Transfer & Trust Company, a New
York banking corporation ("AST").

                                    RECITALS:

          WHEREAS, the Company and U.S. Bank (as successor to Firstar Trust
Company) are parties to that certain Rights Agreement, dated as of February 14,
1996, as amended, a copy of which is attached hereto as Exhibit A (the "Rights
Agreement"), pursuant to which U.S. Bank undertook the duties and obligations of
the Rights Agent (as defined in the Rights Agreement) under the terms and
conditions of the Rights Agreement;

          WHEREAS, U.S. Bank has notified the Company that it will resign as the
Rights Agent;

          WHEREAS, pursuant to Section 21 of the Rights Agreement, the Company
agrees to discharge U.S. Bank from its duties as Rights Agent under the Rights
Agreement;

          WHEREAS, the Company desires to appoint AST as a successor Rights
Agent under the Rights Agreement, and AST desires to undertake and perform the
duties and obligations of the Rights Agent under the terms and conditions of the
Rights Agreement;

          WHEREAS, the Company has directed U.S. Bank to amend Section 21 of the
Rights Agreement as necessary to allow the Company to appoint AST as a successor
Rights Agent under the Rights Agreement.

                                   AGREEMENT:

          NOW, THEREFORE, for good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, and intending to be legally bound
hereby, the parties agree as follows:

     1. Amendment of Section 21 of Rights Agreement. Section 21 of the Rights
Agreement is amended and restated in its entirety to read as follows:

          "Section 21. Change of Rights Agent. The Rights Agent or any successor
     Rights Agent may resign and be discharged from its duties under this
     Agreement upon 30 days' notice in writing mailed to the Company and to each
     transfer agent of the Common Shares by registered or certified mail and, if
     separate Right Certificates have been issued as of the date of such notice
     as contemplated by Section 3 hereof, to the holders of the Right
     Certificates by first-class mail. The Company may remove the Rights Agent
     or any successor Rights Agent upon 30 days' notice in writing, mailed to
     the Rights Agent or successor Rights Agent, as the case may be, and to each
     transfer agent of the Common Shares by registered or certified mail, and,
     if separate Right Certificates have been issued as of the date of such
     notice as contemplated by Section 3 hereof, to the holders of the Right
     Certificates by first-class mail. If the Rights Agent shall

<PAGE>

     resign or be removed or shall otherwise become incapable of acting, the
     Company shall appoint a successor to the Rights Agent. If the Company shall
     fail to make such appointment within a period of 30 days after giving
     notice of such removal or after it has been notified in writing of such
     resignation or incapacity by the resigning or incapacitated Rights Agent or
     by the holder of a Right Certificate (who shall, with such notice, submit
     his Right Certificate for inspection by the Company), then the registered
     holder of any Right Certificate may apply to any court of competent
     jurisdiction for the appointment of a new Rights Agent. Any successor
     Rights Agent, whether appointed by the Company or by such a court, shall be
     (a) a corporation organized and doing business under the laws of the United
     States or of the State of New York or the State of Wisconsin (or of any
     other state of the United States so long as such corporation is authorized
     to do business in the State of New York or the State of Wisconsin), in good
     standing, having an office or agency in the State of Wisconsin or the State
     of New York, which is authorized under such laws to exercise corporate
     trust or stock transfer powers and is subject to supervision or examination
     by federal or state authority and which has at the time of its appointment
     as Rights Agent a combined capital and surplus of at least $10 million, or
     (b) an Affiliate of a corporation described in clause (a) of this sentence.
     After appointment, the successor Rights Agent shall be vested with the same
     powers, rights, duties and responsibilities as if it had been originally
     named as Rights Agent without further act or deed; but the predecessor
     Rights Agent shall deliver and transfer to the successor Rights Agent any
     property at the time held by it hereunder, and execute and deliver any
     further assurance, conveyance, act or deed necessary for the purpose. Not
     later than the effective date of any such appointment the Company shall
     file notice thereof in writing with the predecessor Rights Agent and each
     transfer agent of the Common Shares, and, if separate Right Certificates
     have been issued as of such effective date as contemplated by Section 3
     hereof, mail a notice thereof in writing to the registered holders of the
     Right Certificates. Failure to give any notice provided for in this Section
     21, however, or any defect therein, shall not affect the legality or
     validity of the resignation or removal of the Rights Agent or the
     appointment of the successor Rights Agent, as the case may be."

     2. Amendment of Section 26 of Rights Agreement. Section 26 of the Rights
Agreement is amended and restated in its entirety to read as follows:

          "Section 26. Notices.

          (a) Notices or demands authorized by this Agreement to be given or
     made by the Rights Agent or by the holder of any Right Certificate to or on
     the Company shall be sufficiently given or made if sent by first-class
     mail, postage prepaid, addressed (until another address is filed in writing
     with the Rights Agent) as follows:

                         Midwest Express Holdings, Inc.
                         6744 South Howell Avenue
                         Oak Creek, Wisconsin 53154-1402

                         Attn:  Secretary

                                       -2-
<PAGE>

          (b) Subject to the provisions of Section 21 hereof, any notice or
     demand authorized by this Agreement to be given or made by the Company or
     by the holder of any Right Certificate to or on the Rights Agent shall be
     sufficiently given or made if sent by first-class mail, postage prepaid,
     addressed (until another address is filed in writing with the Company) as
     follows:

                         American Stock Transfer & Trust Company7
                         59 Maiden Lane
                         New York, New York 10038

                         Attn: Corporate Trust Department

          (c) Notices or demands authorized by this Agreement to be given or
     made by the Company or the Rights Agent to the holder of any Right
     Certificate shall be sufficiently given or made if sent by first-class
     mail, postage prepaid, addressed to such holder at the address of such
     holder as shown on the registry books of the Company."

     3. Appointment. The Company appoints AST as a successor Rights Agent under
the terms and conditions of the Rights Agreement, as amended pursuant to Section
1 and Section 2 above (as so amended, the "Amended Rights Agreement").

     4. Assumption. AST accepts the appointment as agent for the Company and the
holders of Rights (as defined in the Amended Rights Agreement) under the Amended
Rights Agreement, and AST assumes and agrees to perform all of the duties and
obligations of the Rights Agent under the terms and conditions of the Amended
Rights Agreement.

     5. Rights Agent. From and after the September 30, 2002, each and every
reference in the Amended Rights Agreement to a "Rights Agent" shall be deemed a
reference to AST.

     6. Section 21 Notice. This instrument constitutes notice to U.S. Bank, as
the Company's transfer agent, pursuant to Section 21 of the Rights Agreement
that the Company has appointed AST as the successor Rights Agent to U.S. Bank
and that U.S. Bank is discharged as such Rights Agent.

     7. No Further Amendment. Except as provided in Section 1 and Section 2
above, the terms and conditions of the Amended Rights Agreement shall be
unaffected by this instrument and shall remain in full force and effect.

     8. Successors. Pursuant to Section 28 of the Amended Rights Agreement, the
respective covenants and provisions of the Amended Rights Agreement by or for
the benefit of the Company or the Rights Agent shall bind and inure to the
benefit of the successors and assigns of the Company or the Rights Agent, as the
case may be.

     9. Governing Law. This instrument shall be deemed to be a contract made
under the laws of the State of Wisconsin and for all purposes shall be governed
by and construed in accordance with the laws of such State applicable to
contracts to be made and performed entirely within such State.

                                       -3-
<PAGE>

     10. Counterparts. This instrument may be executed in any number of
counterparts, and each of such counterparts shall for all purposes be deemed to
be an original, and all such counterparts shall together constitute but one and
the same instrument.

     11. Descriptive Headings. Descriptive headings of the Sections of this
instrument are inserted for convenience only and shall not control or affect the
meaning or construction of any of the provisions of this instrument.

          IN WITNESS WHEREOF, the parties hereto have executed this instrument,
effective as of the date recited above.

MIDWEST EXPRESS HOLDINGS, INC.              U.S. BANK, NATIONAL ASSOCIATION

By: /s/ Authorized Signature                By: /s/ Authorized Signature
   -------------------------------------       ---------------------------------
   Name:                                       Name:
        ----------------------------                ------------------------
   Title:                                      Title:
         ---------------------------                 ------------------------

AMERICAN STOCK TRANSFER &
TRUST COMPANY

By: /s/ Authorized Signature
   -------------------------------------
     Name:
          ----------------------------
     Title:
           ---------------------------

                                      -4-SIXTH AMENDMENT TO SENIOR SECURED REVOLVING CREDIT AGREEMENT
                                       AND
                                 LIMITED WAIVER

     THIS SIXTH AMENDMENT TO SENIOR SECURED REVOLVING CREDIT AGREEMENT and
LIMITED WAIVER, dated as of February 18, 2003 (the "Amendment"), is by and among
MIDWEST EXPRESS HOLDINGS, INC. (the "Borrower"), the lenders party hereto and
U.S. BANK NATIONAL ASSOCIATION, as Agent (the "Agent").

                                    RECITALS

     WHEREAS, the Borrower is party to that certain Senior Secured Revolving
Credit Agreement, dated as of August 31, 2001, by and among the Borrower, the
lenders party thereto (each, a "Lender" and collectively, the "Lenders") and the
Agent, as amended by the First Amendment to Senior Secured Revolving Credit
Agreement dated as of January 9, 2002, the Second Amendment to Senior Secured
Revolving Credit Agreement dated as of June 28, 2002, the Third Amendment to
Senior Secured Revolving Credit Agreement dated as of August 29, 2002, the
Fourth Amendment to Senior Secured Revolving Credit Agreement dated as of
September 30, 2002, and the Fifth Amendment to Senior Secured Revolving Credit
Agreement dated as of October 7, 2002 (as so amended, the "Credit Agreement");
and

     WHEREAS, Midwest Express Airlines, Inc.("Airlines") has entered into an
Equipment Purchase Agreement dated as of December 30, 2002, between Airlines and
TWA Airlines LLC ("TWA"), as amended by Addendum A to Exhibit A dated as of
January 20, 2003, between Airlines and American Airlines, Inc. ("AA") (as so
amended, the "Parts Purchase Agreement"), pursuant to which Airlines has
purchased the aircraft parts described in Exhibit A attached hereto
(collectively, the "Specified Parts Inventory"); and

     WHEREAS, pursuant to the Parts Purchase Agreement, Airlines is obligated to
pay an aggregate purchase price for the Specified Parts Inventory of $2,663,411
in installments of $583,400 on December 30, 2002, $583,400 on January 31, 2003,
$616,600 on February 28, 2003, $583,400 on March 31, 2003 and $296,611 on April
30, 2003 (each an "Installment Payment" and collectively the "Installment
Payments"); and

     WHEREAS, Airlines has paid the Installment Payments due on December 30,
2002, and January 31, 2003; and

     WHEREAS, TWA and AA have assigned to Cirrus Aerospace, Inc. ("Cirrus")
their respective rights to receive all Installment Payments other than the
Installment Payment due on December 30, 2002, and to secure such payment
obligations Airlines has granted to Cirrus liens and security interests in the
Specified Parts Inventory; and

     WHEREAS, to evidence its obligation to pay the Installment Payments due on
January 31, 2003, February 28, 2003, March 31, 2003 and April 30, 2003, Airlines
issued to Cirrus on December 30, 2002 its Secured Promissory Note in the
original principal amount of $616,600 and Airlines issued to Cirrus on January
20, 2003 its Secured Promissory Note in the original principal amount of
$1,463,411 (collectively, the "Cirrus Secured Notes"); and

<PAGE>

     WHEREAS, Defaults exist under Section 8(d)(ii) of the Credit Agreement by
reason of Airlines' incurrence of Indebtedness under the Parts Purchase
Agreement and the Cirrus Secured Notes in violation of Section 7.2 of the Credit
Agreement and the existence of Liens in the Specified Parts Inventory in favor
of Cirrus in violation of Section 7.1 of the Credit Agreement (the "Specified
Defaults"); and

     WHEREAS, Events of Default also exist under Section 8(d)(i) of the Credit
Agreement by reason of the Borrower's failure to comply with Sections 6.11 and
6.12 of the Credit Agreement as of January 31, 2003 (the "Specified Events of
Default"); and

     WHEREAS, the Borrower has requested that the Lenders and the Agent amend
the Credit Agreement and waive the Specified Defaults and the Specified Events
of Default as set forth herein; and

     WHEREAS, to induce the Lenders and the Agent to enter into this Amendment
the Borrower has made certain material representations and promises to the
Lenders and the Agent as set forth herein; and

     WHEREAS, the Lenders and the Agent are willing to enter into this Amendment
in reliance upon the material representations and promises made by the Borrower
to the Lenders and the Agent, but only under the terms and conditions set forth
herein.

     NOW, THEREFORE, in consideration of the foregoing recitals and the
covenants, conditions and agreements set forth herein, and for other good and
valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the parties hereto hereby agree as follows:

                                   ARTICLE I
                                   ---------

                    DEFINITIONS AND INCORPORATION OF RECITALS
                    -----------------------------------------

     1.1 Definitions. Capitalized terms used in this Amendment but not defined
herein shall have the definitions assigned in the Credit Agreement.

     1.2 Recitals. Each of the Recitals set forth above is confirmed and adopted
by the parties hereto as if set forth herein.

                                   ARTICLE II
                                   ----------

                                   AMENDMENTS
                                   ----------

     The Credit Agreement is amended as follows:

     2.1 Section 1.1 - Definitions - Cirrus Secured Notes. The new definition
"Cirrus Secured Notes" is added to Section 1.1 of the Credit Agreement as
follows:

     "Cirrus Secured Notes" means the Secured Promissory Note issued by Airlines
to Cirrus Aerospace, Inc. on December 30, 2002 in the original principal amount
of $616,600 and the

                                       2
<PAGE>

Secured Promissory Note issued by Airlines to Cirrus Aerospace, Inc. on January
20, 2003 in the original principal amount of $1,463,411, each in the form
delivered to the Agent prior to February 18, 2003.

     2.2 Section 1.1 - Definitions - Installment Payee. The new definition
"Installment Payee" is added to Section 1.1 of the Credit Agreement as follows:

     "Installment Payee" means TWA Airlines LLC and American Airlines, Inc., as
sellers of the Specified Parts Inventory under the Parts Purchase Agreement,
Cirrus Aerospace, Inc., as assignee of the rights of TWA Airlines LLC and
American Airlines, Inc. to receive all Installment Payments other than the
Installment Payment due on December 30, 2002, and any subsequent assignee
thereof.

     2.3 Section 1.1 - Definitions - Installment Payment. The new definition
"Installment Payment" is added to Section 1.1 of the Credit Agreement as
follows:

     "Installment Payment" means each of the following payments due on the
following dates pursuant to the Parts Purchase Agreement and the Cirrus Secured
Notes: $583,400 due on December 30, 2002, $583,400 due on January 31, 2003,
$616,600 due on February 28, 2003, $583,400 due on March 31, 2003 and $296,611
due on April 30, 2003.

     2.4 Section 1.1 - Definitions - Leverage Ratio. The definition of "Leverage
Ratio" contained in Section 1.1 of the Credit Agreement is amended in its
entirety to read as follows:

     "Leverage Ratio" means, as of the last day of any month, the ratio of
Consolidated Funded Debt on such day to Consolidated EBITDAR for the 12 month
period ending as of such day; provided that for purposes of computing the
Leverage Ratio as of December 31, 2002 through and including April 31, 2003, the
outstanding unpaid amount of Installment Payments shall not be included in the
amount of Consolidated Funded Debt.

     2.5 Section 1.1 - Definitions - Parts Purchase Agreement. The new
definition "Parts Purchase Agreement" is added to Section 1.1 of the Credit
Agreement as follows:

     "Parts Purchase Agreement" means that certain Equipment Purchase Agreement
dated as of December 30, 2002, between Airlines and TWA Airlines LLC, as amended
by Addendum A to Exhibit A dated as of January 20, 2003, between Airlines and
American Airlines, Inc., pursuant to which Airlines has purchased the Specified
Parts Inventory, each in the form delivered to the Agent prior to February 18,
2003.

     2.6 Section 1.1 - Definitions - Permitted Indebtedness. The definition of
"Permitted Indebtedness" in Section 1.1 of the Credit Agreement is amended by
inserting therein the following new subsection (xi) and renumbering former
subsection (xi) as new subsection (xii):

     (xi) Indebtedness under the Parts Purchase Agreement and the Cirrus Secured
Notes, subject to compliance with Sections 6.17 and 6.18;

                                       3
<PAGE>

     2.7 Section 1.1 - Definitions - Permitted Liens. The definition of
"Permitted Liens" in Section 1.1 of the Credit Agreement is amended by inserting
therein the following new subsection (xiv):

     (xiv) Liens securing Indebtedness under the Parts Purchase Agreement and
the Cirrus Secured Notes, subject to compliance with Sections 6.17 and 6.18.

     2.8 Section 1.1 - Definitions - Specified Parts Inventory. The new
definition "Specified Parts Inventory" is added to Section 1.1 of the Credit
Agreement as follows:

     "Specified Parts Inventory" means the aircraft parts described in Exhibit A
attached hereto.

     2.9 Section 1.1 - Definitions - Revolving Committed Amount. The definition
of "Revolving Committed Amount" contained in Section 1.1 of the Credit Agreement
is amended in its entirety to read as follows:

     "Revolving Committed Amount" means collectively, the aggregate amount of
all of the Revolving Commitments as referenced in Section 2.1(a) and,
individually, the amount of each Lender's Revolving Commitment as specified in
Schedule 2.1(a), subject to adjustment on account of assignment pursuant to the
provisions of Section 10.6(c) hereof, and subject to the automatic reductions of
the following amounts on the following dates: $2,500,000 on December 15, 2002,
$3,000,000 on February 15, 2003, $500,000 on March 15, 2003 and $500,000 on
April 15, 2003. Schedule 2.1(a) shall automatically be deemed to be amended to
reflect such reductions without any further action by the Borrower, the Agent or
the Lenders.

     2.10 Section 6.17 - Release of Liens in Specified Parts Inventory. A new
Section 6.17 of the Credit Agreement is created to read as follows:

     "6.17 Release of Liens in Specified Parts Inventory. The Borrower shall
cause Airlines to deliver to the Agent evidence satisfactory to the Agent that
the Specified Parts Inventory is free and clear of all Liens other than Liens in
favor of the Agent, including without limitation all Liens in favor of
Installment Payee, not later than the earlier of (i) the date that is 30
calendar days after all of the Installment Payments have been paid in full, or
(ii) May 31, 2003.

     2.11 Section 6.18 - Grant of Liens in Specified Parts Inventory. A new
Section 6.18 of the Credit Agreement is created to read as follows:

     "6.18 Grant of Liens in Specified Parts Inventory. The Borrower shall cause
Airlines to execute and deliver to the Agent, on the date when it is required to
make the delivery to the Agent specified in Section 6.17, such new or amended
security agreements, aircraft security agreements, UCC financing statements, FAA
lien registration statements, and other documents and materials as the Agent or
Required Lenders may request in order to provide to the Agent first priority
perfected Liens in the Specified Parts Inventory.

                                       4
<PAGE>

                                  ARTICLE III
                                  -----------

                         REPRESENTATIONS AND WARRANTIES
                         ------------------------------

     The Borrower hereby represents and warrants to the Agent and the Lenders
that:

     3.1 Credit Agreement. All of the representations and warranties made by the
Borrower in the Credit Agreement are true and correct as of the date hereof. No
Default or Event of Default under the Credit Agreement has occurred and is
continuing as of the date of this Amendment, except the Specified Defaults and
the Specified Events of Default.

     3.2 Authorization; Enforceability. The making, execution and delivery of
this Amendment, and performance of and compliance with the terms of the Credit
Agreement, as amended, have been duly authorized by all necessary corporate
action by the Borrower. This Amendment is the valid and binding obligation of
the Borrower, enforceable against the Borrower in accordance with its terms.

     3.3 Absence of Conflicting Obligations. The making, execution and delivery
of this Amendment, and performance of and compliance with the terms of the
Credit Agreement, as amended, do not violate any presently existing provision of
law or the articles of incorporation or bylaws of the Borrower or any agreement
to which the Borrower is a party or by which it is bound.

     3.4 Parts Purchase Agreement. The Borrower has heretofore furnished to the
Agent and the Lenders an accurate and complete copy of the Parts Purchase
Agreement, the Cirrus Secured Notes and each exhibit, schedule and other
document contemplated therein or executed by the Borrower or any Guarantor in
connection therewith.

                                   ARTICLE IV
                                   ----------

                                  MISCELLANEOUS
                                  -------------

     4.1 Limited Waiver.

     (a) The Required Lenders hereby waive the Specified Defaults and the
Specified Events of Default.

     (b) This waiver is limited to the Specified Defaults and the Specified
Events of Default and shall not be construed to constitute (i) any waiver of any
other event, circumstance or condition or of any other right or remedy available
to the Agent or any Lender pursuant to the Credit Agreement or any other Credit
Document, (ii) a consent to any departure by the Borrower or any Subsidiary from
any other term or requirement of the Credit Agreement or any other Credit
Document, or (iii) any indication that the Required Lenders are prepared to
grant any further waiver of any provision of the Credit Agreement or any other
Credit Document.

     4.2 Continuance of Credit Agreement. Except as specifically amended by this
Amendment, the Credit Agreement shall remain in full force and effect.

                                       5
<PAGE>

     4.3 Survival. All agreements, representations and warranties made in this
Amendment or in any documents delivered pursuant to this Amendment shall survive
the execution of this Amendment and the delivery of any such document.

     4.4 Governing Law. This Amendment shall be governed by the laws of the
State of Wisconsin (without regard to choice of law principles).

     4.5 Counterparts; Headings. This Amendment may be executed in several
counterparts, each of which shall be deemed an original, but such counterparts
shall together constitute but one and the same agreement. Article and Section
headings in this Amendment are inserted for convenience of reference only and
shall not constitute a part hereof.

     4.6 Severability. Any provision of this Amendment which is prohibited or
unenforceable in any jurisdiction shall, as to such jurisdiction, be ineffective
to the extent of such prohibition or unenforceability without invalidating the
remaining provisions of this Amendment or affecting the validity or
enforceability of such provision in any other jurisdiction.

     4.7 Conditions to Effectiveness. This Amendment shall become effective as
of the date hereof upon the satisfaction of each the following conditions
precedent:

     (a) The Agent shall have received a fully-executed copy of this Amendment,
executed by each of the Borrower, the Lenders and the Agent;

     (b) The Agent shall have received a fully-executed copy of a Reaffirmation
of Guaranty in the form attached hereto, executed by each of the Guarantors; and

     (c) No Default or Event of Default shall have occurred and be continuing,
except the Specified Defaults and the Specified Events of Default.

     4.8 Costs and Expenses. Without limiting any provisions of the Credit
Agreement or any of the prior Amendments thereto relating to the payment of fees
and expenses by Borrower, Borrower shall pay promptly all costs and expenses of
the Agent incurred in connection with this Amendment, including fees and
expenses of the Agent's legal counsel.

     4.9 Ratification. The Credit Agreement, as amended hereby, the other Credit
Documents and all other documents, instruments and agreements related thereto,
are hereby ratified and confirmed in all respects and shall continue in full
force and effect. The Credit Agreement shall, together with this Amendment, be
read and construed as a single agreement. All references in the Credit
Agreement, the other Credit Documents and any related agreement or instrument
shall hereafter refer to the Credit Agreement as amended hereby.

     4.10 No Other Amendments. Except as expressly provided in this Amendment,
all of the terms and conditions of the Credit Agreement and the other Credit
Documents remain in full force and effect. Nothing contained in this Amendment
shall be construed to imply a willingness on the part of the Lenders or the
Agent to grant any similar or other future waivers or amendments of any of the
terms and conditions of the Credit Agreement or the other Credit Documents.

                                       6
<PAGE>

     4.11 Release. In order to induce the Agent and the Lenders to enter into
this Amendment, the Borrower and the Guarantors acknowledge and agree that: (a)
they do not have any claim or cause of action against the Agent or any of the
Lenders (or any of their respective directors, officers, employees or agents);
(b) they do not have any offset right, counterclaim or defense of any kind
against any of its obligations, indebtedness or liabilities to the Agent and the
Lenders; and (c) each of the Agent and the Lenders have heretofore properly
performed and satisfied in a timely manner all of their obligations to the
Borrower and the Guarantors. The Borrower and the Guarantors wish to eliminate
any possibility that any past conditions, acts, omissions, events, circumstances
or matters would impair or otherwise adversely affect any of the Agent's or the
Lenders' rights, interests, contracts, collateral security or remedies.
Therefore, the Borrower and the Guarantors unconditionally release, waive and
forever discharge (i) any and all liabilities, obligations, duties, promises or
indebtedness of any kind of either of the Agent or any of the Lenders to the
Borrower or any Guarantor, except the obligations to be performed by the Agent
and the Lenders as expressly stated in the Credit Agreement, as amended hereby,
and the other Credit Documents, and (ii) all claims, offsets, causes of action,
suits or defenses of any kind whatsoever (if any), whether arising at law or in
equity, whether known or unknown, which the Borrower or any Guarantor might
otherwise have against the Agent or any of the Lenders or any of their
directors, officers, employees or agents, in either case (i) or (ii) on account
of any condition, act, omission, event, contract, liability, obligation,
indebtedness, claim, cause of action, defense, circumstance or matter of any
kind whatsoever arising or occurring on or prior to the date of this Amendment.
Except as prohibited by law, the Borrower and the Guarantors hereby waive any
right they may have to claim or recover in any litigation involving the Agent or
any of the Lenders, any special, exemplary, punitive or consequential damages or
any damages other than, or in addition to, actual damages. The Borrower and the
Guarantors (A) certify that no representative, agent or attorney of any Lender
or the Agent has represented, expressly or otherwise, that such Lender or the
Agent would not, in the event of litigation, seek to enforce the foregoing
waivers, releases and discharges, and (B) acknowledge that the Agent and the
Lenders have been induced to enter into this Amendment by, among other things,
the waivers, releases, discharges and certifications contained herein. The
waivers, releases and discharges in this paragraph shall be effective regardless
of any other event that may occur or not occur on or after the date hereof.

                            [signature page follows]

                                       7
<PAGE>

                            REAFFIRMATION OF GUARANTY

     Each of the undersigned (each a "Guarantor") executed a Subsidiary Guaranty
(each a "Guaranty") dated as of August 31, 2001 in favor of the Lenders (as
defined in each Guaranty) pursuant to which each Guarantor guaranteed certain
obligations owed by Midwest Express Holdings, Inc. (the "Borrower") to the
Lenders, including, without limitation, all debts, liabilities, obligations,
covenants and agreements of the Borrower in that certain Senior Secured
Revolving Credit Agreement, dated as of August 31, 2001 (as amended from time to
time, the "Credit Agreement"), by and between the Borrower, the Lenders and U.S.
Bank National Association, as Agent for the Lenders, and related agreements, as
amended. Each Guarantor acknowledges and consents to the Sixth Amendment to
Senior Secured Revolving Credit Agreement and Limited Waiver of even date
herewith (the "Amendment") and hereby agrees that it shall remain liable under
its Guaranty for all amounts owed pursuant to the Credit Agreement, as amended
by the Amendment, and the related agreements. Further, each Guarantor expressly
agrees that it shall be irrevocably bound by the provisions of the Release set
forth in Section 4.11 of the Amendment.

     Dated as of February 18, 2003.

                                    MIDWEST EXPRESS AIRLINES, INC.

                                    By: /s/ Authorized Signature
                                       -----------------------------------------
                                    Title:
                                          --------------------------------------

                                    ASTRAL AVIATION, INC.

                                    By: /s/ Authorized Signature
                                       -----------------------------------------
                                    Title:
                                          --------------------------------------

                                    MIDWEST EXPRESS SERVICES - OMAHA, INC.

                                    By: /s/ Authorized Signature
                                       -----------------------------------------
                                    Title:
                                          --------------------------------------

                                    MIDWEST EXPRESS SERVICES - KANSAS CITY, INC.

                                    By: /s/ Authorized Signature
                                       -----------------------------------------
                                    Title:
                                          --------------------------------------

                                    YX PROPERTIES, LLC

                                    By: /s/ Authorized Signature
                                       -----------------------------------------
                                    Title:
                                          --------------------------------------

                                       8
<PAGE>

     IN WITNESS WHEREOF, the parties hereto have executed this Amendment as of
the day and year first written above.

                                    MIDWEST EXPRESS HOLDINGS, INC.

                                    By: /s/ Authorized Signature
                                       -----------------------------------------
                                    Title:
                                          --------------------------------------

                                    U.S. BANK NATIONAL ASSOCIATION, in its
                                    capacity as Agent and as a Lender

                                    By: /s/ Authorized Signature
                                       -----------------------------------------
                                    Title:
                                          --------------------------------------

                                    M&I MARSHALL & ILSLEY BANK

                                    By: /s/ Authorized Signature
                                       -----------------------------------------
                                    Title:
                                          --------------------------------------

                                    Attest:
                                           -------------------------------------
                                    Title:
                                          --------------------------------------

                                    BANK ONE, NA (Main Office Chicago)

                                    By: /s/ Authorized Signature
                                       -----------------------------------------
                                    Title:
                                          --------------------------------------

                                       9

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00048-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00048-of-00352.parquet"}]]