Document:

<PAGE>

                                                                    Exhibit 10.4

                                                                  EXECUTION COPY

           *** CERTAIN CONFIDENTIAL INFORMATION HAS BEEN OMITTED AND
               FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
                    COMMISSION PURSUANT TO RULE 24b-2 OF THE
                  SECURITIES EXCHANGE ACT OF 1934, AS AMENDED

                                   $89,000,000

                                 LOAN AGREEMENT

                         DATED AS OF SEPTEMBER 27, 2005

                                      AMONG

                                US AIRWAYS, INC.
                                       AND
                          AMERICA WEST AIRLINES, INC.,
                                  AS BORROWERS,

                             US AIRWAYS GROUP, INC.,
                                  AS GUARANTOR,

                           AIRBUS FINANCIAL SERVICES,
                        AS INITIAL LENDER AND LOAN AGENT

                                       AND

                           WELLS FARGO BANK NORTHWEST,
                              NATIONAL ASSOCIATION
                               AS COLLATERAL AGENT

<PAGE>

                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                            PAGE
                                                                            ----
<S>                                                                         <C>
ARTICLE I DEFINITIONS, INTERPRETATION AND ACCOUNTING TERMS ..............     1
   SECTION 1.1    DEFINED TERMS .........................................    22
   SECTION 1.2    COMPUTATION OF TIME PERIODS ...........................    22
   SECTION 1.3    ACCOUNTING TERMS AND PRINCIPLES .......................    22
   SECTION 1.4    CERTAIN TERMS .........................................    22

ARTICLE II THE LOANS ....................................................    22
   SECTION 2.1    THE LOANS .............................................    22
   SECTION 2.2    BORROWING PROCEDURES ..................................    24
   SECTION 2.3    SCHEDULED REPAYMENT OF THE LOANS ......................    25
   SECTION 2.4    EVIDENCE OF DEBT; USE OF PROCEEDS .....................    25
   SECTION 2.5    OPTIONAL PREPAYMENTS ..................................    27
   SECTION 2.6    MANDATORY PREPAYMENTS .................................    28
   SECTION 2.7    INTEREST ..............................................    30
   SECTION 2.8    FEES ..................................................    30
   SECTION 2.9    PAYMENTS AND COMPUTATIONS .............................    31
   SECTION 2.10   CERTAIN PROVISIONS GOVERNING THE LOANS ................    32
   SECTION 2.11   CAPITAL ADEQUACY ......................................    35
   SECTION 2.12   SUBSTITUTION OF LENDERS ...............................    36
   SECTION 2.13   TAXES .................................................    37
   SECTION 2.14   PRO RATA TREATMENT AND PAYMENTS .......................    41

ARTICLE III CONDITIONS TO CLOSING AND FUTURE FUNDINGS ...................    41
   SECTION 3.1    CONDITIONS PRECEDENT ..................................    41

ARTICLE IV REPRESENTATIONS AND WARRANTIES ...............................    46
   SECTION 4.1    ORGANIZATION, POWERS, QUALIFICATION; AIR CARRIER
                  LICENSES, FRANCHISES AND PERMITS ......................    46
   SECTION 4.2    AUTHORIZATION OF BORROWING, ETC. ......................    47
   SECTION 4.3    FINANCIAL CONDITION ...................................    48
   SECTION 4.4    NO MATERIAL ADVERSE EFFECT ............................    49
   SECTION 4.5    TITLE TO PROPERTIES; LIENS ............................    49
   SECTION 4.6    LITIGATION: ADVERSE FACTS .............................    49
   SECTION 4.7    TAX RETURNS ...........................................    50
   SECTION 4.8    NO DEFAULT OR EVENT OF DEFAULT ........................    50
   SECTION 4.9    GOVERNMENTAL REGULATION ...............................    50
   SECTION 4.10   EMPLOYEE BENEFIT PLANS ................................    50
   SECTION 4.11   COMPLIANCE WITH LAWS ..................................    50
   SECTION 4.12   SECURITY DOCUMENTS ....................................    51
   SECTION 4.13   CONCERNING THE COLLATERAL .............................    51
   SECTION 4.14   REPRESENTATIONS AND WARRANTIES OF THE COLLATERAL
                  AGENT .................................................    53
</TABLE>

<PAGE>

<TABLE>
<S>                                                                          <C>
ARTICLE V COVENANTS .....................................................    54
   SECTION 5.1    FINANCIAL STATEMENTS AND OTHER INFORMATION ............    54
   SECTION 5.2    CORPORATE EXISTENCE ...................................    56
   SECTION 5.3    PAYMENT OF TAXES ......................................    56
   SECTION 5.4    MAINTENANCE OF PROPERTIES; INSURANCE ..................    56
   SECTION 5.5    INSPECTION ............................................    57
   SECTION 5.6    COMPLIANCE WITH LAWS, ETC .............................    57
   SECTION 5.7    FURTHER ASSURANCES ....................................    57
   SECTION 5.8    EMPLOYEE BENEFIT PLANS ................................    58
   SECTION 5.9    FAA MATTERS; CITIZENSHIP ..............................    58
   SECTION 5.10   DELIVERY OF POST-RECORDING FAA OPINION ................    58
   SECTION 5.11   SOFTWARE ..............................................    58
   SECTION 5.12   COMPLIANCE WITH MORTGAGE ..............................    58
   SECTION 5.13   PROHIBITION ON LIENS ..................................    58
   SECTION 5.14   MERGER OR CONSOLIDATION ...............................    61
   SECTION 5.15   CERTAIN APPROVALS UNDER THE ATSB LOAN AGREEMENT .......    61

ARTICLE VI EVENTS OF DEFAULT ............................................    61
   SECTION 6.1    EVENTS OF DEFAULT .....................................    61
   SECTION 6.2    REMEDIES ..............................................    63

ARTICLE VII THE LOAN AGENT AND THE COLLATERAL AGENT .....................    64
   SECTION 7.1    AUTHORIZATION AND ACTION ..............................    64
   SECTION 7.2    AGENT'S RELIANCE, ETC .................................    65
   SECTION 7.3    AGENT AND AFFILIATES ..................................    65
   SECTION 7.4    REPRESENTATIONS OF THE LENDERS ........................    66
   SECTION 7.5    EVENTS OF DEFAULT .....................................    66
   SECTION 7.6    LOAN AGENT'S AND COLLATERAL AGENT'S RIGHT TO
                  INDEMNITY .............................................    66
   SECTION 7.7    INDEMNIFICATION OF LOAN AGENT AND COLLATERAL AGENT ....    66
   SECTION 7.8    SUCCESSOR LOAN AGENT AND COLLATERAL AGENT .............    67
   SECTION 7.9    COLLATERAL AND GUARANTEE MATTERS ......................    67

ARTICLE VIII GUARANTEE ..................................................    68
   SECTION 8.1    GUARANTEE .............................................    68
   SECTION 8.2    NO SUBROGATION ........................................    68
   SECTION 8.3    AMENDMENTS, ETC. WITH RESPECT TO THE OBLIGATIONS ......    69
   SECTION 8.4    GUARANTEE ABSOLUTE AND UNCONDITIONAL ..................    69
   SECTION 8.5    REINSTATEMENT .........................................    70
   SECTION 8.6    PAYMENTS ..............................................    70

ARTICLE IX MISCELLANEOUS ................................................    71
   SECTION 9.1    AMENDMENTS, WAIVERS, ETC ..............................    71
   SECTION 9.2    SUCCESSORS AND ASSIGNS; PARTICIPATIONS AND
                  ASSIGNMENTS ...........................................    72
   SECTION 9.3    COSTS AND EXPENSES ....................................    75
   SECTION 9.4    INDEMNITIES ...........................................    75
   SECTION 9.5    RIGHT OF SET-OFF ......................................    76
</TABLE>

                                       ii

<PAGE>

<TABLE>
<S>                                                                          <C>
   SECTION 9.6    JOINT AND SEVERAL LIABILITY; MAXIMUM LIABILITY;
                  WAIVER OF SUBROGATION .................................    76
   SECTION 9.7    SHARING OF PAYMENTS, ETC ..............................    78
   SECTION 9.8    NOTICES, ETC ..........................................    79
   SECTION 9.9    NO WAIVER; REMEDIES ...................................    79
   SECTION 9.10   GOVERNING LAW .........................................    79
   SECTION 9.11   SUBMISSION TO JURISDICTION; SERVICE OF PROCESS ........    79
   SECTION 9.12   WAIVER OF JURY TRIAL ..................................    80
   SECTION 9.13   MARSHALING; PAYMENTS SET ASIDE ........................    80
   SECTION 9.14   SECTION TITLES ........................................    80
   SECTION 9.15   EXECUTION IN COUNTERPARTS .............................    81
   SECTION 9.16   SEVERABILITY ..........................................    81
   SECTION 9.17   CONFIDENTIALITY .......................................    81
   SECTION 9.18   APPOINTMENT OF INDENTURE TRUSTEE ......................    82
</TABLE>

Annexes

Annex A - Notice Addresses
Annex B - Lending Office
Annex C - Lender Commitments

Schedules

Schedule 1.1(a)  - Existing Pass Through Certificates
Schedule 1.1 (b) - Specified Engines
Schedule 4.12    - Financing Statements, Filings and Recordings
Schedule 5.13    - Liens

Exhibits

Exhibit A - Form of Assignment and Assumption
Exhibit B - Form of Note
Exhibit C - Form of Notice of Borrowing

                                      iii

<PAGE>

          LOAN AGREEMENT, dated as of September 27, 2005, among US AIRWAYS,
INC., a Delaware corporation ("US Airways"), AMERICA WEST AIRLINES, INC., a
Delaware corporation ("America West", and together with US Airways, the
"Borrowers", and each, a "Borrower"); US AIRWAYS GROUP, INC., a Delaware
corporation, as guarantor (the "Guarantor"); AIRBUS FINANCIAL SERVICES as the
initial lender (together with its successors and permitted assigns, the "Initial
Lender"), as loan agent for the Lenders (in such capacity, together with its
successors and permitted assigns, the "Loan Agent"), and WELLS FARGO BANK
NORTHWEST, NATIONAL ASSOCIATION, as collateral agent (in such capacity, together
with its successors and permitted assigns, the "Collateral Agent").

                                  WITNESSETH:

          WHEREAS, on September 12, 2004 (the "Petition Date"), the Guarantor
and each of its domestic subsidiaries as of such date, including US Airways
(collectively, the "Debtors") filed voluntary petitions (the "Cases") for relief
under the Bankruptcy Code with the United States Bankruptcy Court for the
Eastern District of Virginia, Alexandria Division (the "Bankruptcy Court") and
continued in possession of their property and in the management of their
businesses pursuant to Bankruptcy Code Sections 1107 and 1108;

          WHEREAS, on May 19, 2005, the Guarantor, Barbell Acquisition Corp., a
Delaware corporation and Wholly-Owned Subsidiary of the Guarantor (the "Merger
Sub"), and America West Holdings, Corporation entered into an Agreement and Plan
of Merger (the "Merger Agreement");

          WHEREAS, (x) the Bankruptcy Court has entered an order (the
"Confirmation Order") confirming the Plan of Reorganization under Chapter 11 of
the Bankruptcy Code (as in effect on the date of confirmation thereof pursuant
to the Confirmation Order, the "Plan of Reorganization") and (y) the Effective
Time (as defined in the Merger Agreement) has occurred, and the Borrowers have
requested that the Lenders make available to the Borrowers the Loans for the
purposes specified herein; and

          WHEREAS, the Lenders are willing to make available to the Borrowers
the Loans upon the terms and subject to the conditions set forth herein;

          NOW, THEREFORE, in consideration of the premises and the covenants and
agreements contained herein, the parties hereto hereby agree as follows:

                                    ARTICLE I

                DEFINITIONS, INTERPRETATION AND ACCOUNTING TERMS

          SECTION 1.1 DEFINED TERMS. As used in this Agreement, the following
terms have the following meanings (such meanings to be equally applicable to
both the singular and plural forms of the terms defined):

<PAGE>

          "A319/A320/A321 Purchase Agreement" means the A319/A320/A321 Purchase
Agreement, dated as of October 31, 1997, as amended, between AVSA, S.A.R.L. and
the Guarantor.

          "A319/A320 Purchase Agreement" means the A319/A320 Purchase Agreement,
dated as of September 12, 1997, as amended, between AVSA, S.A.R.L. and America
West.

          "A330/A340 Purchase Agreement" means the A330/A340 Purchase Agreement
dated as of November 24, 1998, as amended, between AVSA, S.A.R.L. and the
Guarantor.

          "A321 Airbus Financings" mean the note purchase agreements, trust
indenture and mortgages, secured notes and related loan documents entered into
between Aviateur International Limited, as initial lender, and certain
Affiliates, on the one hand, US Airways Inc., on the other hand, and U.S. Bank
National Association (as successor in interest to State Street Bank and Trust
Company of Connecticut, N.A.), as Indenture Trustee, as amended or supplemented
from time to time, providing for the mortgage loan financing of five (5) Airbus
A321 model aircraft bearing FAA registration numbers N184US, N185UW, N186US,
N187US and N188US, respectively.

          "A321 Aircraft" means, individually or collectively as the context may
require, the Airbus A321 aircraft having FAA registration numbers N184US,
N185UW, N186US, N187US, and N188US.

          "A350/A340 Financing Letter Agreement" means the A350/A330 Financing
Letter Agreement dated as of September 27, 2005 as amended, among AVSA, S.A.R.L.
and the Obligors.

          "Actual Knowledge" means, with respect to any Person, actual knowledge
of a vice president or more senior officer of such Person or any other officer
of such Person having responsibility for the transactions contemplated by the
Loan Documents.

          "Affiliate" means, with respect to any Person, any other Person that,
directly or indirectly, controls, is controlled by or is under common control
with such Person. For the purposes of this definition, "control" means the
possession, directly or indirectly, of the power to direct or cause the
direction of management and policies of such Person, whether through the
ownership of voting securities, by contract or otherwise.

          "Aggregate Original Principal Amount" means the aggregate outstanding
principal amount of the Loans on the earliest of (x) the close of business on
December 31, 2007, (y) the date the Commitments are fully utilized and (z) the
date when the Commitments are terminated.

          "Agreement" means this Loan Agreement.

          "Airbus" means Airbus S.A.S.

                                       2

<PAGE>

          "Aircraft Mortgage" means the five (5) Trust Indenture and Mortgages
dated the date hereof between US Airways and US Bank National Association, as
Indenture Trustee, providing for second mortgages on the A321 Aircraft, as
supplemented or amended from time to time.

          "Aircraft Related Equipment" means aircraft (including aircraft
engines installed thereon) in the fleet of any Obligor or any of their
Subsidiaries, spare aircraft engines and propellers, spare parts, aircraft
parts, simulators and other training devices, and passenger loading bridges or
other flight or ground equipment and Aircraft Related Facilities.

          "Aircraft Related Facilities" means (i) airport terminal facilities,
including without limitation, baggage systems, loading bridges and related
equipment, building, infrastructure and maintenance, club rooms, apron, fueling
systems or facilities, signage/image systems, administrative offices,
information technology systems and security systems, (ii) airline support
facilities, including without limitation, cargo, catering, mail, ground service
equipment, ramp control, deicing, hangars, aircraft parts/storage, training and
reservations facilities and (iii) all equipment used in connection with the
foregoing.

          "Applicable Interest Rate" means, for each Loan and for each Interest
Period, a rate per annum equal to LIBOR for such Interest Period plus the
Applicable Margin.

          "Applicable Margin" means [...***...]% per annum; provided, however,
that on each of (A) the [...***...] anniversary of the Closing Date, and (B) on
the [...***...] anniversary of the Closing Date (each an "Applicable Margin
Determination Date"), the Applicable Margin shall be reviewed and adjusted or
not adjusted based on the most recently published corporate credit rating
assigned by S&P to the Guarantor and its consolidated subsidiaries, taken
together, as follows: for each grade (for illustration purposes, the change from
B to B+ or to B- being a single grade) by which such credit rating is lower
than, or higher than, B, the Applicable Margin shall be increased or decreased,
respectively, by [...***...]%; provided, further, that, notwithstanding the
foregoing, the Applicable Margin shall not be higher than [...***...]% per annum
or lower than [...***...]% per annum.

          "Asset Sale" means, with respect to any property, any sale, transfer
or other disposition (including by way of merger, consolidation, exchange of
assets or sale leaseback transactions or by reason of any condemnation or other
taking or permanent requisition) of such property, in one transaction or a
series of related transactions, by any Obligor or any of its Subsidiaries to any
Person other than such Obligor or any of its Subsidiaries; provided that sales
of spare parts subject to the Lien of the Spare Parts Mortgage which are made
pursuant to Section 3.02(b)(4) thereof shall not constitute Asset Sales.

*** CONFIDENTIAL TREATMENT REQUESTED

                                       3

<PAGE>

          "Assignment and Assumption" means an Assignment and Assumption entered
into by a Lender and an Assignee, in substantially the form of Exhibit A or any
other form approved by the Loan Agent.

          "ATSB" means the Air Transportation Stabilization Board, or any
successor thereto.

          "ATSB Loan Agreements" means (i) the Amended and Restated Loan
Agreement, dated as of September 27, 2005, among US Airways, the Guarantor, the
other subsidiaries of the Guarantor party thereto, the lenders from time to time
party thereto, the Loan Administrator and agents party thereto, and the ATSB,
and (ii) the Amended and Restated Loan Agreement, dated as of September 27,
2005, among America West, the Guarantor, the other subsidiaries of the Guarantor
party thereto, the lenders from time to time party thereto, the Loan
Administrator and agents party thereto, and the ATSB, each as in effect on the
Closing Date.

          "AWA Holdings" means America West Holdings Corporation.

          "Bankruptcy Code" means Title 11 of the United States Code as now and
hereafter in effect, or any successor statute.

          "Bankruptcy Court" has the meaning specified in the recitals hereto.

          "Borrower" has the meaning specified in the preamble to this
Agreement.

          "Borrowing" means the borrowing of a Loan on the Closing Date or on
another Funding Date.

          "Business Day" means any day other than a Saturday, Sunday, or other
day on which commercial banks in New York, New York, Dublin, Ireland, or
Phoenix, Arizona are authorized or required by law to remain closed; provided
that when used in connection with LIBOR, the term "Business Day" shall mean any
day on which banks in London, England are open for dealings in dollar deposits
in the interbank market.

          "Business Plan" means the business plan of the Borrowers dated as of
July 7, 2005, provided to the Loan Agent.

          "Cape Town Convention" means the Convention on International Interests
in Mobile Equipment and the Protocol to the Convention on Matters Specific to
Aircraft Equipment signed in Cape Town on 16 November 2001.

          "Capital Lease," as applied to any Person, means any lease of any
property (whether real, personal or mixed) by that Person as lessee that, in
conformity with GAAP, is required to be accounted for as a capital lease on the
balance sheet of that Person, and the amount of Indebtedness represented by such
lease shall be the capitalized amount of the obligations evidenced thereby
determined in accordance with GAAP.

                                       4

<PAGE>

          "Capital Stock" means, with respect to any Person, any and all shares,
interests, participations or other equivalents (however designated, whether
voting or non-voting) of such Person's capital stock, whether now outstanding or
issued after the date of this Agreement.

          "Cases" has the meaning specified in the recitals hereto.

          "Cash" means money, currency or a credit balance.

          "Cash Equivalents" has the meaning given in the ATSB Loan Agreements.

          "Closing Date" means the date of this Agreement.

          "Code" means the Internal Revenue Code of 1986, as amended to the date
hereof and from time to time hereafter.

          "Collateral" means the property comprising the collateral security
provided by the Collateral Documents.

          "Collateral Documents" means, collectively, (i) the Aircraft
Mortgages, as amended or supplemented from time to time, (ii) the Spare Parts
Mortgage and Security Agreement, (iii) the Engine Mortgage and Security
Agreement, (iv) the Purchase Agreement Security Agreement, and (v) such other
security documents as may be executed and delivered by the Obligors pursuant to
the terms of Section 5.6.

          "Commitments" is a collective reference to the Tranche A Commitments,
the Tranche B Commitments, the Tranche C Commitments, the Tranche D Commitments
and the Tranche E Commitments. The initial aggregate amount of the Commitments
is $0,000,000.

          "Commodity Agreement" means any agreement or arrangement designed to
protect any Obligor or any of their Subsidiaries against fluctuations in the
prices of commodities used by any Obligor or any of their Subsidiaries in the
ordinary course of its business.

          "Confirmation Order" has the meaning specified in the recitals hereto.

          "Consummation of the Plan" means substantial consummation of the Plan
of Reorganization within the meaning of Section 1101(2) of the Bankruptcy Code.

          "Contractual Obligation," as applied to any Person, means any
provision of any equity security issued by that Person or of any material
indenture, mortgage, deed of trust, contract, undertaking, agreement or other
material instrument to which that Person is a party or by which it or any of its
properties is bound or to which it or any of its properties is subject.

          "Cross-Collateral" shall mean (i) all collateral security supporting
payment of the Cross-Default Obligations, and (ii) all right, title and
interest, if any, of

                                        5

<PAGE>

any Obligor in, to or with respect to predelivery payments or deposits made
under any aircraft purchase agreement between any Obligor or any of its
Affiliates, on the one hand, and Airbus or any of its Affiliates, on the other
hand.

          "Cross-Default Obligations" means all Obligations of any Obligor (i)
held, directly or indirectly (through a trustee or otherwise) by Airbus or any
Affiliate under or with respect to (A) the A321 Airbus Financings, or (B) the
Other Loan Agreement or any other lease, loan, trade receivable, or other
extension of credit between Airbus or any of its Affiliates, on the one hand,
any Obligor or any of its Affiliates, on the other hand, whether such lease,
loan, trade receivable, or other extension of credit is direct or is indirect
through a lease, structured financing or otherwise, including without
limitation, any Pass Through Certificates listed on Schedule 1.1(a) or acquired
in an original issuance after the Closing Date, or (C) any aircraft purchase
agreement between any Obligor, on the one hand, and Airbus or any of its
Affiliates, on the other hand, or (ii) under any Principal Credit Facility. For
purposes of this definition, the term "Obligations" shall mean with respect to
any of the agreements referred to in clauses (A), (B) or (C) of the preceding
sentence, the unpaid principal of and interest thereon (including interest
accruing after the maturity thereof and interest accruing after the filing of
any petition in bankruptcy, or the commencement of any insolvency,
reorganization or like proceeding, relating to any Obligor, whether or not a
claim for post-filing or post-petition interest is allowed in such proceeding)
and all other obligations and liabilities of the Obligors thereunder, whether
direct or indirect, absolute or contingent, due or to become due, or now
existing or hereafter incurred, which may arise under, out of, or in connection
therewith, or any other document made, delivered or given in connection herewith
or therewith, whether on account of principal, interest, reimbursement
obligations, fees, indemnities, costs, expenses or otherwise.

          "Currency Agreement" means any foreign exchange contract, currency
swap agreement, futures contract, option contract, synthetic cap or other
similar agreement or arrangement designed to protect any Obligor or any of its
Subsidiaries against fluctuations in currency values.

          "Debtors" has the meaning specified in the recitals thereto.

          "Default" means any event which with the passing of time or the giving
of notice or both would, unless cured or waived, become an Event of Default.

          "Designated Locations" has the meaning specified in the Spare Parts
Security Agreement.

          "Dollars" and the sign "$" each mean the lawful money of the United
States of America.

          "Effective Date" means the date on which the conditions precedent set
forth in Section 3.1(a), (j) and (p) have been satisfied, but not later than
December 2, 2005.

                                       6

<PAGE>

          "Engine Mortgage and Security Agreement" means the Engine Mortgage and
Security Agreement dated as of the date hereof between America West and the
Collateral Agent.

          "ERISA" means the Employee Retirement Income Security Act of 1974, as
amended from time to time.

          "ERISA Affiliate" means, as applied to either Borrower, (i) any
corporation which is, or was at any time, a member of a controlled group of
corporations within the meaning of Section 414(b) of the Code of which such
Borrower is a member; (ii) any trade or business (whether or not incorporated)
which is a member of a group of trades or businesses under common control within
the meaning of Section 414(c) of the Code of which such Borrower is a member;
and (iii) any member of an affiliated service group within the meaning of
Section 414(m) or (o) of the Code of which such Borrower, any corporation
described in clause (i) above or any trade or business described in clause (ii)
above is a member.

          "ERISA Event" means (a) any "reportable event," as defined in Section
4043 of ERISA or the regulations issued thereunder with respect to a Plan (other
than an event for which reporting is waived); (b) the existence with respect to
any Plan of an "accumulated funding deficiency" (as defined in Section 412 of
the Code or Section 302 of ERISA); (c) the filing pursuant to Section 412(d) of
the Code or Section 303(d) of ERISA of an application for a waiver of the
minimum funding standard with respect to any Plan; (d) the incurrence by
Guarantor or any of its ERISA Affiliates of any liability under Title IV of
ERISA with respect to the termination of any Plan; (e)(i) the receipt by
Guarantor or any ERISA Affiliate from the PBGC of a notice of determination that
PBGC intends to seek termination of any Plan or to have a trustee appointed for
any Plan, or (ii) the filing by Guarantor or any ERISA Affiliate of a notice of
intent to terminate any Plan; (f) the incurrence by Guarantor or any of its
ERISA Affiliates of any liability (i) with respect to the withdrawal from a
Multiemployer Plan pursuant to Sections 4063 and 4064 of ERISA, (ii) with
respect to a facility closing pursuant to Section 4062(e) of ERISA, or (iii)
with respect to the withdrawal or partial withdrawal from any Multiemployer
Plan; or (g) the receipt by Guarantor or any ERISA Affiliate of any notice
concerning the imposition of Withdrawal Liability or a determination that a
Multiemployer Plan is, or is expected to be, insolvent or in reorganization,
within the meaning of Title IV of ERISA.

          "Event of Default" has the meaning specified in Section 6.1.

          "Event of Loss" has the meaning specified in the Engine Mortgage and
Security Agreement or in the Aircraft Mortgages.

          "Exchange Act" means the Securities Exchange Act of 1934, as amended
from time to time, and any successor statute.

          "Excluded Taxes" has the meaning specified in Section 2.13(a).

          "FAA" means the Federal Aviation Administration.

                                       7

<PAGE>

          "Federal Reserve Board" means the Board of Governors of the Federal
Reserve System, or any successor thereto.

          "Final Order" means an order or judgment of the Bankruptcy Court, or
other court of competent jurisdiction, as entered on the docket in the Cases or
the docket of any other court of competent jurisdiction, that has not been
reversed, stayed, modified or amended, and as to which the time to appeal or
seek reargument, reconsideration, or certiorari has expired and no appeal,
motion for reconsideration or reargument or petition for certiorari has been
timely taken, or as to which any appeal that has been taken or any petition for
certiorari, motion for reconsideration or reargument that has been or may be
filed has been resolved by the highest court to which the order or judgment was
appealed or from which reargument, reconsideration, or certiorari was sought and
the time to take any further appeal, petition for certiorari or move for
reargument shall have expired.

          "Fiscal Year" means the Borrowers' fiscal year referenced in the
financial statements to be delivered by the Borrowers pursuant to Section 5.1.

          "Funding Date" means each date on which one or more Borrowings of
Loans is made in accordance with Sections 2.1 and 2.2.

          "GAAP" means generally accepted accounting principles in the United
States of America.

          "GECC" means General Electric Capital Corporation.

          "Governmental Authority" means any nation or government, any state or
other political subdivision thereof and any agency, authority, instrumentality,
regulatory body, court, central bank or other entity exercising executive,
legislative, judicial, taxing, regulatory or administrative functions of or
pertaining to government.

          "Guarantee" means any obligation, contingent or otherwise, of any
Person directly or indirectly guaranteeing any Indebtedness of any other Person
and, without limiting the generality of the foregoing, any obligation, direct or
indirect, contingent or otherwise, of such first Person (i) to purchase or pay
(or advance or supply funds for the purchase or payment of) such Indebtedness of
such other Person (whether arising by virtue of partnership arrangements, or by
agreement to keep-well, to purchase assets, goods, securities or services, to
take-or-pay, or to maintain financial statement conditions or otherwise) or (ii)
entered into for purposes of assuring in any other manner the obligee of such
Indebtedness of the payment thereof or to protect such obligee against loss in
respect thereof (in whole or in part), including any pledge of assets to secure
indebtedness of another or (iii) to maintain working capital, equity capital or
any other financial statement condition or liquidity or level of income or cash
flow of such other Person so as to enable such Person to pay such Indebtedness.
The term "Guarantee" used as a verb has a corresponding meaning.

          "Guarantor" has the meaning specified in the preamble to this
Agreement.

                                       8

<PAGE>

          "Indebtedness" means, with respect to any Person at any date of
determination (without duplication), (i) all obligations of such Person for
borrowed money; (ii) all obligations of such Person evidenced by bonds,
debentures, notes or other similar instruments; (iii) all obligations of such
Person in respect of letters of credit or other similar instruments (including
reimbursement obligations with respect thereto); (iv) all obligations of such
Person to pay the deferred purchase price of property or services, which
purchase price is due more than six months after the date of placing such
property in service or taking delivery and title thereto or the completion of
such services, except (x) Trade Payables and similar obligations incurred in the
ordinary course of business and (y) earn-outs and other contingent payouts in
respect of acquisitions; (v) all Capital Lease obligations of such Person (the
amount of the Indebtedness in respect of Capital Lease obligations to be
determined as provided in the definition of Capital Lease in this Section 1.1);
(vi) all Indebtedness of other Persons secured by a Lien on any asset of such
Person, whether or not such Indebtedness is assumed by such Person; provided
that in the case of Indebtedness issued without recourse to such Persons, the
amount of such Indebtedness shall be the lesser of (A) the fair market value of
such asset at such date of determination and (B) the stated principal amount of
such Indebtedness, provided, however, that if such Indebtedness is assumed by
such Person or provides for recourse against such Person, the amount of such
Indebtedness shall be the greater of (A) and (B) above; (vii) all Indebtedness
of other Persons Guaranteed by such Person to the extent such Indebtedness is
Guaranteed by such Person; (viii) to the extent not otherwise included in this
definition and to the extent treated as a liability under GAAP, obligations
under Currency Agreements, Interest Rate Agreements and Commodity Agreements
(ix) the capitalized amount of remaining lease payments owing by such Person
under Synthetic Leases that would appear on the balance sheet of such Person if
such lease were treated as a Capital Lease; (x) the aggregate amount of
uncollected accounts receivable of such Person subject at such time to a sale of
receivables (or similar transaction) to the extent such transaction is effected
with recourse to such Person (whether or not such transaction would be reflected
on the balance sheet of such Person in accordance with GAAP); (xi) the
Indebtedness of any partnership or unincorporated joint venture in which such
Person is a general partner or a joint venturer to the extent such Indebtedness
is recourse to such Person; and (xii) all prepaid forward sales in bulk of
dividend miles or available seat miles or like transactions other than in the
ordinary course of business. The amount of Indebtedness of any Person at any
date shall be the outstanding balance at such date of all unconditional
obligations as described above and the maximum liability, upon the occurrence of
the contingency giving rise to the obligation, of any contingent obligations at
such date; provided that the amount outstanding at any time of any Indebtedness
issued with original issue discount is the face amount of such Indebtedness less
the remaining unamortized portion of the original issue discount of such
Indebtedness at such time as determined in conformity with GAAP. "Indemnified
Liabilities" has the meaning specified in Section 9.4.

          "Indemnified Taxes" has the meaning specified in Section 2.13(a).

          "Indemnitees" has the meaning specified in Section 9.4.

                                       9

<PAGE>

          "Indenture Trustee" means U.S. Bank National Association, Indenture
Trustee under the Aircraft Mortgages, and its successors.

          "Initial Lender" has the meaning specified in the preamble to this
Agreement.

          "Intercreditor Agreement" means the intercreditor agreement with GECC
as described in Section 3.1(c)(3).

          "Interest Payment Date" has the meaning specified in Section 2.7(b).

          "Interest Period" means, for each Loan, (a) made on the first Funding
Date, the period commencing on September 26, 2005 and ending three months
thereafter, (b) with respect to any other initial funding of a Loan, the period
commencing on the initial Funding Date for such Loan and ending on the last day
of the current Interest Period for any other Tranche then outstanding, or if no
other Tranche is then outstanding, ending three months after the initial Funding
Date, and (c) thereafter, a period commencing on the last day of the immediately
preceding Interest Period therefor and ending three months thereafter; provided,
however, that:

               (i) the final scheduled Interest Period shall end on the Loan
     Maturity Date;

               (ii) if any Interest Period would otherwise end on a day which is
     not a Business Day, such Interest Period shall be extended to the next
     succeeding Business Day, unless the result of such extension would be to
     extend such Interest Period into another calendar month, in which event
     such Interest Period shall end on the immediately preceding Business Day
     and for the avoidance of doubt, interest computation shall be adjusted
     accordingly;

               (iii) any Interest Period that begins on the last Business Day of
     a calendar month (or on a day for which there is no numerically
     corresponding day in the calendar month at the end of such Interest Period)
     shall end on the last Business Day of a calendar month; and

               (iv) each "Interest Period" beginning after the occurrence and
     during the continuance of an Event of Default shall be for a period
     duration of one month.

          "Interest Rate Agreement" means any interest rate future agreement,
interest rate option agreement, interest rate swap agreement, interest rate cap
agreement, interest rate collar agreement, interest rate hedge agreement or
other similar agreement or arrangement designed to protect any Obligor or any of
their Subsidiaries against fluctuations in interest rates or under which any
Obligor or any of their Subsidiaries is a party or a beneficiary on the date of
this Agreement or becomes a party or a beneficiary thereafter.

                                       10

<PAGE>

          "IRS" means the Internal Revenue Service of the United States or any
successor thereto.

          "Lenders" mean (i) the Initial Lender, and (ii) each financial
institution or other entity that from time to time becomes a party hereto as a
lender hereunder pursuant to an Assignment and Assumption, other than any such
Person that ceases to be a party hereto pursuant to an Assignment and Assumption
or otherwise.

          "Lending Office" means, with respect to any Lender, the office of such
Lender specified as its "Lending Office" opposite its name on Annex B or on the
Assignment and Assumption by which it became a Lender or such other office of
such Lender as such Lender may from time to time specify to the Borrowers and
the Loan Agent.

          "LIBOR" means the rate per annum (rounded to the nearest 1/100 of 1%)
equal to the quotation that appears on page 3750 of the Telerate Screen (or
otherwise on such screen or on such other screen, page or service as may replace
the Telerate Screen) as of 11:00 A.M., London time, two Business Days prior to
the beginning of the applicable Interest Period as the rate for dollar deposits
to be delivered on the first day of such Interest Period and maintained for such
Interest Period (or, in the case of the initial Interest Period, for three
months) in an amount comparable to the principal amount of the Loan. In the
event that such rate does not so appear on the Telerate Screen (or otherwise as
aforesaid), the "LIBOR" for purposes of this definition shall be the arithmetic
average (rounded to the nearest 1/100 of 1%) of the offered quotation to
first-class banks in the interbank Eurodollar market by each Reference Bank in
London for dollar deposits of amounts in same day funds comparable to the
principal amount of the Loan, with maturities comparable to the applicable
Interest Period (or, in the case of the initial Interest Period, for three
months) determined as of 11:00 A.M. (London time) on the date which is two
Business Days prior to the commencement of such Interest Period. If any one or
more of the Reference Banks shall not furnish such timely information to the
Loan Agent for the purpose of determining any such interest rate, the Loan Agent
shall determine such interest rate on the basis of timely information furnished
by the remaining Reference Bank or Reference Banks.

          "Lien" means, with respect to any asset, any lien, mortgage, pledge,
assignment for security purposes, security interest, charge, hypothecation,
lease or encumbrance of any kind on or of such asset (including any conditional
sale or other title retention agreement and any lease in the nature thereof, any
easement, right of way or other encumbrance on title to real property and any
agreement to give any security interest). "Loan" means any loan made by a Lender
pursuant to this Agreement.

          "Loan Agent" has the meaning specified in the preamble to this
Agreement.

          "Loan Documents" means, collectively, this Agreement, the Notes, the
Other Loan Agreement, the Other Loan Agreement Notes, the Collateral Documents,
the Intercreditor Agreement and each certificate, agreement or document executed
by the

                                       11

<PAGE>

Borrowers and delivered to the Loan Agent or the Lenders in connection with or
pursuant to this Agreement.

          "Loan Maturity Date" means December 31, 2010, except that if such date
is not a Business Day, then the Loan Maturity Date shall be the immediately
succeeding Business Day.

          "Material Adverse Change" means a material adverse change in the
financial condition of any Obligor between the Effective Date and the date of
provision of the relevant Loan which would materially and adversely affect such
Obligor's ability to perform any of its payment or other material obligations
under any Loan Document.

          "Merger Agreement" has the meaning specified in the recitals hereto.

          "Merger Sub" has the meaning specified in the recitals hereto.

          "Material Adverse Effect" means, with respect to the Obligors, (a) an
event of the type described in Section 6.1(f) or 6.1(g), or (b) the cessation of
commercial passenger service by either Borrower for a period of ten Business
Days, other than as a result of the action of any Governmental Authority, or (c)
a material adverse effect on (i) the validity or enforceability of any material
provision of this Agreement or any of the other Loan Documents or any of the
material rights or remedies of the Loan Agent, the Collateral Agent or the
Lenders hereunder or thereunder, or (ii) the Lien of the Collateral Documents.

          "MOU" means that certain Memorandum of Understanding between AVSA,
S.A.R.L., the Guarantor, and the Borrowers, dated as of May 18, 2005.

          "Multiemployer Plan" means a multiemployer plan as defined Section
4001(a)(3) of ERISA, and in respect of which Guarantor or any ERISA Affiliate is
(or with the application of Section 4212(c) of ERISA would be) (a) an "employer"
as defined in Section 3(5) of ERISA or (b) a "seller" as defined in Section 4204
of ERISA.

          "Net Cash Proceeds" means, with respect to any Asset Sale, the cash
proceeds of such Asset Sale, net of (i) reasonable and customary brokerage
commissions and other reasonable and customary fees and expenses (including
reasonable fees and expenses of counsel, investment bankers, accountants and
other professionals, consultants and advisors) related to such Asset Sale, (ii)
provisions for all taxes payable as a result of such Asset Sale without regard
to the consolidated results of operations of Guarantor, the Borrowers and their
respective Subsidiaries, taken as a whole, (iii) payments made to repay
Indebtedness or any other obligation outstanding at the time of such Asset Sale
(or any related expenses required to be paid to third parties pursuant to
documentation related to the financing of the assets subject to such Asset Sale)
that (A) is secured by a Lien on the property or assets sold and (B) is required
by its terms to be paid as a result of such Asset Sale and (iv) appropriate
amounts to be provided by any Obligor as a reserve against any liabilities
associated with such Asset Sale, including, without limitation, pension and
other post-employment benefit liabilities, liabilities related to environmental
matters and liabilities under any indemnification obligations associated with
such Asset

                                       12

<PAGE>

Sale, all as determined in conformity with GAAP, but limited to the period of
the required reserve.

          "Net Insurance Proceeds" means an amount equal to: (i) any cash
payments or proceeds received by an Obligor under any casualty insurance policy
in respect of a covered loss thereunder with respect to tangible, real or
personal property, minus (ii) (a) any actual and reasonable costs incurred by an
Obligor in connection with the adjustment or settlement of any claims of an
Obligor in respect thereof (including reasonable fees and expenses of counsel),
(b) provisions for all taxes payable as a result of such event without regard to
the consolidated results of operations of Guarantor, the Borrowers and their
respective Subsidiaries, taken as a whole, (c) the amount of any Indebtedness
secured by a Lien on any property subject to such covered loss and any related
expenses of third parties, in each case, required by the documentation related
to such Indebtedness to be discharged or paid from the proceeds thereof and (d)
any amounts required to be paid to any Person (other than an Obligor) owning a
beneficial interest in the property subject to such loss.

          "Non-Consenting Lender" has the meaning specified in Section 9.1(c).

          "Non-U.S. Person" means a Person that is not a United States person as
defined in section 7701(a)(30) of the Code.

          "Note" has the meaning specified in Section 2.4(d).

          "Notice of Borrowing" has the meaning specified in Section 2.2(a).

          "Obligations" means the unpaid principal of and interest on (including
interest accruing after the maturity of the Loans and interest accruing after
the filing of any petition in bankruptcy, or the commencement of any insolvency,
reorganization or like proceeding, relating to any Obligor, whether or not a
claim for post-filing or post-petition interest is allowed in such proceeding)
the Loans and all other obligations and liabilities of the Obligors to the Loan
Agent, the Collateral Agent, the Indenture Trustee or to any Lender, whether
direct or indirect, absolute or contingent, due or to become due, or now
existing or hereafter incurred, which may arise under, out of, or in connection
with, this Agreement or any other Loan Document, whether on account of
principal, interest, reimbursement obligations, fees, indemnities, costs,
expenses (including all fees, charges and disbursements of counsel to the Loan
Agent, the Collateral Agent or to any Lender that are required to be paid by any
Obligor pursuant hereto) or otherwise.

          "Obligor" means Guarantor or either Borrower.

          "Officer's Certificate" means, as applied to any corporation, a
certificate executed on behalf of such corporation by its chairman of the board
(if an officer), president, one of its vice presidents, chief financial officer,
controller, treasurer or assistant treasurer or an assistant secretary.

          "Operating Lease" means, as applied to any Person, any lease
(including, without limitation, leases that may be terminated by the lessee at
any time) of any

                                       13

<PAGE>

property (whether real, personal or mixed) under which such Person is Lessee,
that is not a Capital Lease.

          "Other Loan Agreement" means, the Loan Agreement, dated as the date
hereof, among the parties hereto, providing for secured loans in the maximum
amount of $161,000,000.

          "Other Loan Agreement Loans" means the "Loans" (as defined in the
Other Loan Agreement).

          "Other Loan Agreement Loan Agent" means the "Loan Agent" (as defined
in the Other Loan Agreement).

          "Other Loan Agreement Notes" means the "Notes" (as defined in the
Other Loan Agreement).

          "Other Loan Agreement Tranche A Commitment Reduction Amount" shall
mean the "Tranche A Commitment Reduction Amount", as defined in the Other Loan
Agreement.

          "Other Loan Agreement Tranche B Commitment Reduction Amount" shall
mean the "Tranche B Commitment Reduction Amount", as defined in the Other Loan
Agreement.

          "Other Loan Agreement Tranche C Commitment Reduction Amount" shall
mean the "Tranche C Commitment Reduction Amount", as defined in the Other Loan
Agreement.

          "Other Loan Agreement Tranche D Commitment Reduction Amount" shall
mean the "Tranche D Commitment Reduction Amount", as defined in the Other Loan
Agreement.

          "Other Loan Agreement Tranche E Commitment Reduction Amount" shall
mean the "Tranche E Commitment Reduction Amount", as defined in the Other Loan
Agreement.

          "Other Obligations" means the "Obligations" (as defined in the Other
Loan Agreement).

          "Other Taxes" has the meaning specified in Section 2.13(b).

          "Participant" has the meaning specified in Section 9.2(c)(i).

          "Pass Through Certificates" means the US Airways 2001-1C Trust
Certificates and any other certificates issued under a similarly structured
financing sponsored by an Obligor or an Affiliate thereof. References to amounts
"due and payable" on a given date, when used with respect to Pass Through
Certificates shall refer to amounts legally due and payable thereunder or to
amounts expected to be distributed

                                       14

<PAGE>

on or before such date to the holders thereof, and "default" when used with
respect to Pass Through Certificates shall have a correlative meaning.

          "Permitted Acquisition Financing" means Indebtedness incurred by an
Obligor in connection with an acquisition, merger or consolidation which is
permitted under Section 6.5 and/or 6.9 (as applicable) of the ATSB Loan
Agreements if and to the extent used (i) to refinance existing Indebtedness of
the Person acquired or Indebtedness secured by the assets acquired or (ii) to
pay consideration or related expenses in connection with such transaction.

          "Permitted Encumbrances" means the following types of Liens (other
than any such Lien imposed pursuant to Section 401(a)(29) or 412(n) of the Code
or by ERISA) as applied to property

               (i) Liens for taxes, assessments or governmental charges or
     claims the payment of which is either (a) not delinquent for a period of
     more than 30 days or (b) being contested in good faith by appropriate
     proceedings, if such reserve or other appropriate provision, if any, as
     shall be required by GAAP shall have been made therefor, as set forth in
     Section 5.3;

               (ii) statutory Liens of landlords and Liens of carriers, vendors,
     warehousemen, repairmen, mechanics and materialmen and other Liens imposed
     by law incurred in the ordinary course of business for sums either (a) not
     delinquent for a period of more than thirty (30) days or (b) being
     contested in good faith by appropriate proceedings, if such reserve or
     other appropriate provision, if any, as shall be required by GAAP shall
     have been made therefor;

               (iii) (A) Liens incurred or deposits (other than with respect to
     the Plans described in Section 4.10) made in the ordinary course of
     business in connection with workers' compensation, unemployment insurance
     and other types of social security, or to secure the performance of
     tenders, statutory obligations, surety and appeal bonds, bids, leases,
     government contracts, trade contracts, performance and return-of-money
     bonds, reimbursement obligations and chargeback rights of Persons
     performing services for an Obligor or a Subsidiary of an Obligor (including
     Liens securing Trade Payables arising from the Obligors' and their
     Subsidiaries' use in the ordinary course of business, consistent with past
     practice, of credit advance facilities to purchase goods and services) and
     other similar obligations (exclusive of obligations for the payment of
     borrowed money) and (B) Liens arising or granted in the ordinary course of
     business in favor of Persons performing credit card processing services,
     travel charge processing services or clearinghouse services for any Obligor
     or any of their Subsidiaries, including IATA, Diners Club, Discover Card,
     NPC, ARC and American Express, so long as such Liens are on cash and Cash
     Equivalents that are subject to holdbacks

                                       15

<PAGE>

     by, or are pledged (in lieu of such holdbacks) to, such Persons to secure
     amounts that may be owed to such Persons under the Obligors' or their
     Subsidiaries' agreements with them in connection with their provision of
     credit card processing, travel charge processing or clearinghouse services
     to the Obligors or any of their Subsidiaries;

               (iv) with respect to real property, easements, rights-of-way,
     restrictions, minor defects, encroachments or irregularities in title and
     other similar charges or encumbrances not interfering in any material
     respect with the ordinary conduct of the business of an Obligor or any of
     its Subsidiaries;

               (v) Liens in favor of customs and revenue authorities arising as
     a matter of law to secure payment of customs duties in connection with the
     importation of goods in the ordinary course of business;

               (vi) any interest or title of a lessor in property leased by an
     Obligor or any of their Subsidiaries under any Capital Lease obligation or
     Operating Lease which, in each case, is not prohibited under this
     Agreement;

               (vii) Liens in favor of collecting or payor banks and other banks
     providing cash management services, in each case, having a right of setoff,
     revocation, refund or chargeback against money or instruments of any
     Obligor or any of their Subsidiaries on deposit with or in possession of
     such bank arising for the payments of bank fees and other similar amounts
     owed in the ordinary course of business;

               (viii) Liens of creditors of any Person to whom any Obligor's or
     any of their Subsidiaries' assets are consigned for sale in the ordinary
     course of business;

               (ix) Liens incurred or deposits made in connection with the Trust
     Agreements;

               (x) any renewal of or substitution for any Lien permitted by any
     of the preceding clauses,; provided that the Indebtedness secured is not
     increased nor the Lien extended to any additional assets;

               (xi) licensing or sublicensing of intellectual property in the
     ordinary course of business of the Obligors or their Subsidiaries;

               (xii) Liens arising from precautionary UCC and similar financing
     statements relating to Operating Leases not otherwise prohibited under any
     Loan Document; and

                                       16

<PAGE>

               (xiii) Liens created under the Collateral Documents.

          "Permitted Invoice" means invoices for amounts due in respect of goods
and services purchased by the Guarantor or any of its Affiliates from Airbus or
any of its Affiliates.

          "Permitted Refinancing Indebtedness" has the meaning given in the ATSB
Loan Agreements.

          "Person" means an individual, partnership, corporation (including a
business trust), joint stock company, estate, trust, limited liability company,
unincorporated association, joint venture or other entity, or a Governmental
Authority.

          "Petition Date" has the meaning specified in the recitals hereto.

          "Plan" means any "employee benefit plan" as defined in section 3(3) of
ERISA which is, or was at any time, maintained or contributed to or required to
be contributed to by the Borrowers or any of their ERISA Affiliates, other than
a multiemployer plan, within the meaning of section 4001(a)(3) of ERISA.

          "Plan Effective Date" means the date on which the Plan of
Reorganization became effective as provided therein.

          "Plan of Reorganization" has the meaning specified in the recitals
hereto.

          "Pledged Engines" means the "Engines" (as defined in the Engine
Mortgage and Security Agreement).

          "Pledged Spare Parts" has the meaning specified in the Spare Parts
Mortgage and Security Agreement.

          "Principal Credit Facility" shall mean, for any Obligor, (i) any
credit agreement to which it is a party guaranteed (or otherwise supported) in
whole or in part by the ATSB, and (ii) from and after the date on which any such
ATSB credit facility of a Borrower is repaid, refinanced or replaced, the
refinancing or replacing credit, note, bond or other loan facility (or, in the
absence of, or after the repayment, refinancing or replacement of, any such
refinancing or replacing facility, then the largest recourse credit, note or
other loan or note facility or issuance of the relevant Obligor from time to
time), other than any such facility or issuance which is secured by and is for
the purpose of financing or refinancing Aircraft Related Equipment and other
than any such facility or issuance which cannot be accelerated or terminated
upon nonperformance or default thereunder.

          "Pro Forma Balance Sheet" has the meaning given in Section 4.3(a).

          "Proposed Change" has the meaning specified in Section 9.1(c).

                                       17

<PAGE>

          "Purchase Agreement Security Agreement" means the Purchase Agreement
Security Agreement, dated as of the date hereof, between the Borrower and the
Collateral Agent.

          "Reference Banks" means Citibank, N.A., Calyon and JPMorgan Chase
Bank, and each of their respective successors.

          "Register" has the meaning specified in Section 2.4(e).

          "Replacement Secured Financing" means any financing transaction,
whether structured as Indebtedness, sale-leaseback or otherwise, (a) which is
secured by any of the Obligors' (i) Slots, (ii) rotable, repairable and
expendable spare parts, (iii) aircraft, or (iv) spare engines, in each case
which immediately prior to such transaction constituted Collateral for purposes
of the ATSB Loan Agreements and (b) which satisfies the further definitional
requirements set forth in the ATSB Loan Agreements.

          "Requisite Lenders" means, collectively, Lenders having greater than
fifty percent (50%) of (i) the aggregate principal amount of Loans then
outstanding plus the aggregate unused Commitments then in effect or, (ii) prior
to the making of the initial Loan, the aggregate Commitments in effect.

          "Responsible Officer" means, with respect to any Person, any of the
Chief Executive Officer, Executive Vice Presidents and Chief Financial Officer
of such Person, but in any event, with respect to financial matters, the Chief
Financial Officer, Treasurer or Controller of such Person.

          "S&P" means Standard & Poor's Ratings Services, a division of The
McGraw-Hill Companies, Inc. and any successor thereto that is a nationally
recognized rating agency.

          "SEC" means the United States Securities and Exchange Commission, or
any United States Governmental Authority succeeding to the functions of such
Securities and Exchange Commission.

          "Senior Mortgages" shall mean each of the "Senior Engine Mortgage" and
the "Senior Spare Parts Mortgage," each as defined in the Spare Parts Mortgage
and Security Agreement or the Engine Mortgage and Security Agreement

          "Slot Regulations" means 49 U.S.C. Section 40103 and 14 C.F.R.
Sections 93.211 - 93.227, and any amendment, supplement or other modification
thereto, or successor, replacement or substitute federal law or regulation
concerning the right or operational authority to conduct landing or takeoff
operations at any airports.

          "Slots" means all of the rights and operational authority granted
under the Slot Regulations and now or hereafter acquired or held by each Obligor
to conduct one instrument flight rule landing or takeoff operation in a
specified time period at Ronald

                                       18

<PAGE>

Reagan Washington National Airport, John F. Kennedy International Airport,
LaGuardia Airport, or any other airport.

          "Software" has the meaning specified in the Spare Parts Security
Agreement.

          "Solvent" means, with respect to any Person, that as of the date of
determination (a) the then fair saleable value of the business of such Person is
not less than the amount that will be required to pay the probable liabilities
on such Person's then existing debts as they become absolute and matured
considering all financing alternatives and potential asset sales reasonably
available to such Person; (b) such Person's capital is not unreasonably small in
relation to its business or any contemplated or undertaken transaction; and (c)
such Person does not intend to incur, or believes that it will not incur, debts
beyond its ability to pay such debts as they become due. For purposes of this
definition, the amount of any contingent liability at any time shall be computed
as the amount that, in light of all of the facts and circumstances existing at
such time, represents the amount that can reasonably be expected to become an
actual or matured liability.

          "Spare Parts Mortgage and Security Agreement" means the Spare Parts
Mortgage and Security Agreement dated as of the date hereof between America West
and the Collateral Agent.

          "Specified Engines" means the Pledged Engines listed on Schedule
1.1(b), each of which is eligible for the benefits of Section 1110 of the
Bankruptcy Code.

          "Subsidiary" means, with respect to any Person, any corporation,
partnership, association, limited liability company, trust or estate, joint
venture or other business entity of which more than 50% of the issued and
outstanding shares of Voting Stock at the time of determination are owned or
controlled, directly or indirectly, by that Person or one or more of the other
Subsidiaries of that Person or a combination thereof.

          "Taxes" means any and all present or future taxes, levies, fees,
duties, imposts, deductions, charges or withholdings of any nature, and all
interest, penalties and other liabilities thereon or computed by reference
thereto imposed, levied, collected, withheld or assessed by any Governmental
Authority.

          "Title 49" shall mean Title 49 of the United States Code, as amended
and in effect from time to time, and the regulations promulgated pursuant
thereto.

          "Trade Payables" means, with respect to any Person, any accounts
payable or any other Indebtedness or monetary obligation to trade creditors
created, assumed or Guaranteed by such Person or any of its Subsidiaries and
arising in the ordinary course of business in connection with the acquisition of
goods or services.

          "Tranche" means a Tranche of the Loans, consisting of Tranche A Loans,
Tranche B Loans, Tranche C Loans, Tranche D Loans and Tranche E Loans.

          "Tranche A Loan" has the meaning specified in Section 2.1(a).

                                       19

<PAGE>

          "Tranche A Commitment" means, as to any Lender, the obligation of such
Lender to make Tranche A Loans hereunder in a principal amount not to exceed the
amount set forth opposite such Lender's name in Annex C. The aggregate amount of
the Tranche A Commitments is initially zero; provided that the aggregate amount
of the Tranche A Commitments of the Lenders shall be automatically increased by
the Tranche A Commitment Increase Amount of the Lenders.

          "Tranche A Commitment Increase Amount" shall mean the Other Loan
Agreement Tranche A Commitment Reduction Amount of the Lenders.

          "Tranche A Note" means a promissory note evidencing Tranche A Loans,
substantially in the form of Exhibit B hereto.

          "Tranche B Loan" has the meaning specified in Section 2.1(b).

          "Tranche B Commitment" means, as to any Lender, the obligation of such
Lender to make Tranche B Loans hereunder in a principal amount not to exceed the
amount set forth opposite such Lender's name in Annex C. The aggregate amount of
the Tranche B Commitments is initially zero; provided that the aggregate amount
of the Tranche B Commitments of the Lenders shall be automatically increased by
the Tranche B Commitment Increase Amount of the Lenders.

          "Tranche B Commitment Increase Amount" shall mean the Other Loan
Agreement Tranche B Commitment Reduction Amount of the Lenders.

          "Tranche B Note" means a promissory note evidencing Tranche B Loans,
substantially in the form of Exhibit B hereto.

          "Tranche C Loan" has the meaning specified in Section 2.1(c).

          "Tranche C Commitment" means, as to any Lender, the obligation of such
Lender to make Tranche C Loans hereunder in a principal amount not to exceed the
amount set forth opposite such Lender's name in Annex C. The aggregate amount of
the Tranche C Commitments is initially zero; provided that the aggregate amount
of the Tranche C Commitments of the Lenders shall be automatically increased by
the Tranche C Commitment Increase Amount of the Lenders.

          "Tranche C Commitment Increase Amount" shall mean the Other Loan
Agreement Tranche C Commitment Reduction Amount of the Lenders.

          "Tranche C Note" means a promissory note evidencing Tranche C Loans,
substantially in the form of Exhibit B hereto.

          "Tranche D Loan" has the meaning specified in Section 2.1(d).

          "Tranche D Commitment" means, as to any Lender, the obligation of such
Lender to make Tranche D Loans hereunder in a principal amount not to exceed the
amount set forth opposite such Lender's name in Annex C. The aggregate amount of
the

                                       20

<PAGE>

Tranche D Commitments is initially zero; provided that the aggregate amount
of the Tranche D Commitments of the Lenders shall be automatically increased by
the Tranche D Commitment Increase Amount of the Lenders.

          "Tranche D Commitment Increase Amount" shall mean the Other Loan
Agreement Tranche D Commitment Reduction Amount of the Lenders.

          "Tranche D Note" means a promissory note evidencing Tranche D Loans,
substantially in the form of Exhibit B hereto.

          "Tranche E Loan" has the meaning specified in Section 2.1(e).

          "Tranche E Commitment" means, as to any Lender, the obligation of such
Lender to make Tranche E Loans hereunder in a principal amount not to exceed the
amount set forth opposite such Lender's name in Annex C. The aggregate amount of
the Tranche E Commitments is initially zero; provided that the aggregate amount
of the Tranche E Commitments of the Lenders shall be automatically increased by
the Tranche E Commitment Increase Amount of the Lenders.

          "Tranche E Commitment Increase Amount" shall mean the Other Loan
Agreement Tranche E Commitment Reduction Amount of the Lenders.

          "Tranche E Note" means a promissory note evidencing Tranche E Loans,
substantially in the form of Exhibit B hereto.

          "Trust Agreements" means all special purpose trust funds established
by any Obligor to manage the collection and payment of amounts collected by the
Obligors for the express benefit of third-party beneficiaries identified as such
in the ATSB Loan Agreements.

          "United States Citizen" has the meaning specified in Section 4.1(b).

          "Voting Stock" means any class or classes of Capital Stock pursuant to
which the holders thereof have the general voting power under ordinary
circumstances to vote for the election of directors, managers or trustees of any
Person (or Persons performing similar functions) irrespective of whether or not
at the time stock of any such class or classes will have or might have such
voting power by the reason of the happening of any contingency.

          "Wholly-Owned" denotes a Subsidiary all of the Voting Stock of which
(other than any director's qualifying shares or investments by foreign nationals
mandated by applicable law) is owned directly or indirectly by the Person named.

          "Withdrawal Liability" means liability to a Multiemployer Plan as a
result of a complete or partial withdrawal from such Multiemployer Plan, as such
terms are defined in Part I of Subtitle E of Title IV of ERISA.

                                       21

<PAGE>

          SECTION 1.2 COMPUTATION OF TIME PERIODS. In this Agreement, in the
computation of periods of time from a specified date to a later specified date,
the word "from" means "from and including" and the words "to" and "until" each
mean "to but excluding" and the word "through" means "to and including."

          SECTION 1.3 ACCOUNTING TERMS AND PRINCIPLES. All accounting terms not
specifically defined herein shall be construed in conformity with GAAP and all
accounting determinations required to be made pursuant hereto shall, unless
expressly otherwise provided herein, be made in conformity with GAAP.

          SECTION 1.4 CERTAIN TERMS.

               (a) The words "herein," "hereof" and "hereunder" and similar
     words refer to this Agreement as a whole, and not to any particular
     Article, Section, subsection or clause in, this Agreement.

               (b) Except as otherwise expressly provided, references in this
     Agreement to an Exhibit, Schedule, Article, Section, subsection or clause
     refer to the appropriate Exhibit or Schedule to, or Article, Section,
     subsection or clause in this Agreement.

               (c) Each agreement defined in this Article I shall include all
     appendices, exhibits and schedules thereto. If the prior written consent of
     any Person is required hereunder for an amendment, restatement, supplement
     or other modification to any such agreement and the consent of each such
     Person is obtained, references in this Agreement to such agreement shall be
     to such agreement as so amended, restated, supplemented or modified. If no
     such consent is required, references in this Agreement shall be to such
     agreement as so amended, restated, supplemented, or modified.

               (d) References in this Agreement to any statute shall be to such
     statute as amended or modified and in effect at the time any such reference
     is operative.

               (e) The term "including" when used in any Loan Document means
     "including without limitation" except when used in the computation of time
     periods.

                                   ARTICLE II

                                    THE LOANS

          SECTION 2.1 THE LOANS.

               (a) Tranche A Loans. On the terms and subject to the conditions
     contained in this Agreement and in reliance upon the representations and
     warranties of the Obligors set forth herein, each Lender agrees to make one
     or more Loans to the Borrowers (each, a "Tranche A Loan") on Funding Dates
     occurring on

                                       22

<PAGE>

     or after the date of delivery of the last A319/A320 Aircraft currently on
     order by America West and not rescheduled in accordance with paragraph 5 of
     the MOU, as requested by a Borrower in a Notice of Borrowing given in
     accordance with Section 2.2 in an amount not to exceed, in the aggregate
     for all Tranche A Loans made by such Lender on all Funding Dates, the
     Tranche A Commitment of such Lender. No Tranche A Loan shall be made prior
     to the date of delivery of the last A319/A320 aircraft on order by America
     West on the date hereof and not rescheduled in accordance with paragraph 5
     of the MOU. The last such aircraft is currently scheduled to be delivered
     in February 2006. There may be multiple Borrowings of Tranche A Loans.
     Tranche A Loans repaid or prepaid may not be reborrowed hereunder.

               (b) Tranche B Loans. On the terms and subject to the conditions
     contained in this Agreement and in reliance upon the representations and
     warranties of the Obligors set forth herein, each Lender further agrees to
     make one or more Loans to the Borrowers (each, a "Tranche B Loan") on the
     Closing Date and on each other Funding Date requested by a Borrower in a
     Notice of Borrowing given in accordance with Section 2.2 in an amount not
     to exceed, in the aggregate for all Tranche B Loans made by such Lender on
     all Funding Dates, the Tranche B Commitment of such Lender. No Tranche B
     Loan, when combined with the aggregate amount of prior Tranche B Loans,
     shall exceed the principal and interest amount paid or prepaid under the
     Airbus A321 Financings from and after the date of the MOU (May 18, 2005) to
     and including the Funding Date for such Tranche B Loan (including, for the
     avoidance of doubt, principal and interest to be paid with the proceeds of
     the proposed Tranche B Loan). No Tranche B Loan shall be made unless all
     amounts which are due and payable on the Funding Date for such Tranche B
     Loan under the A321 Airbus Financings have been, or immediately following
     the application of the proceeds of such Tranche B Loan will have been, paid
     in full. There may be multiple Borrowings of Tranche B Loans. Tranche B
     Loans repaid or prepaid may not be reborrowed hereunder.

               (c) Tranche C Loans. On the terms and subject to the conditions
     contained in this Agreement and in reliance upon the representations and
     warranties of the Obligors set forth herein, each Lender further agrees to
     make one or more Loans to the Borrowers (each, a "Tranche C Loan") on the
     Closing Date and each other Funding Date requested by a Borrower in a
     Notice of Borrowing given in accordance with Section 2.2 in an amount not
     to exceed, in the aggregate for all Tranche C Loans made by such Lender on
     all Funding Dates, the Tranche C Commitment of such Lender. No Tranche C
     Loan shall be made prior to the due date for the payment of the Permitted
     Invoices with respect to which such Tranche C Loan is being made. Each
     Tranche C Loan shall be in an amount not to exceed the aggregate amount of
     all Permitted Invoices not used to support prior Borrowings of Tranche C
     Loans. No Tranche C Loan shall be made until at least thirty (30) days
     after all issued and outstanding Permitted Invoices relating to such
     Tranche C Loan have been paid in full. Copies of the Permitted Invoices
     supporting each Tranche C Loan shall be attached to the applicable Notice
     of Borrowing. There may be multiple

                                       23

<PAGE>

     Borrowings of Tranche C Loans. Tranche C Loans repaid or prepaid may not be
     reborrowed hereunder.

               (d) Tranche D Loans. On the terms and subject to the conditions
     contained in this Agreement and in reliance upon the representations and
     warranties of the Obligors set forth herein, each Lender further agrees to
     make one or more Loans to the Borrowers (each, a "Tranche D Loan") on any
     Funding Date, as requested by a Borrower in a Notice of Borrowing given in
     accordance with Section 2.2 in an amount not to exceed, in the aggregate
     for all Tranche D Loans made by such Lender on all Funding Dates, the
     Tranche D Commitment of such Lender. There may be multiple Borrowings of
     Tranche D Loans. Tranche D Loans repaid or prepaid may not be reborrowed
     hereunder.

               (e) Tranche E Loans. On the terms and subject to the conditions
     contained in this Agreement and in reliance upon the representations and
     warranties of the Obligors set forth herein, each Lender further agrees to
     make one or more Loans to the Borrowers (each, a "Tranche E Loan") on the
     Closing Date and on each other Funding Date requested by a Borrowing in a
     Notice of Borrowing given in accordance with Section 2.2 in an amount not
     to exceed, in the aggregate for all Tranche E Loans made by such Lender on
     all Funding Dates, the Tranche E Commitment of such Lender. There may be
     multiple Borrowings of Tranche E Loans. Tranche E Loans repaid or prepaid
     may not be reborrowed hereunder.

               (f) Final Funding Date. No Funding Date shall occur after
     December 31, 2007.

               (g) Commitment Reduction. The aggregate Commitments of the
     Lenders shall be reduced by $9,187,764.19 if but only for so long as the
     Tranche B-2 of the America West ATSB loan is guaranteed by AFS Cayman
     Limited pursuant to the letter agreement dated as of September 27, 2005,
     among America West, Airbus, Citibank, N.A., and ATSB.

          SECTION 2.2 BORROWING PROCEDURES.

               (a) Each Borrowing shall be made on notice given by a Borrower to
     the Loan Agent not later than 11:00 a.m. (New York City time) at least two
     Business Days prior to the applicable Funding Date. Each such notice shall
     be in substantially the form of Exhibit C (a "Notice of Borrowing") or be
     given by telephone and confirmed in writing within one Business Day
     following such notice, in each case, specifying (A) the proposed Funding
     Date, (B) the aggregate amount of the proposed Borrowing (which must be in
     a minimum amount of $1,000,000 or a whole multiple of $100,000 above that
     amount), or if less, the remaining undrawn amount of the Loan, (C) the
     Tranche designations of the various Loans to be made on the proposed
     Funding Date, and (D) the corporate credit rating of the Guarantor and its
     consolidated Subsidiaries then most recently published by S&P. The Notice
     of Borrowing shall be irrevocable. A Notice of Borrowing with respect to a
     Tranche C Loan shall be accompanied by copies of Permitted Invoices. Each
     Notice of

                                       24

<PAGE>

     Borrowing shall be accompanied by a copy of any Notice of Borrowing (as
     defined therein) given under the Other Loan Agreement for Borrowings on the
     same date.

               (b) The Loan Agent shall give to the Lenders prompt notice of the
     Loan Agent's receipt of a Notice of Borrowing and the Applicable Interest
     Rate with respect thereto. Each Lender shall, subject to the terms of any
     mutually agreed funding agreement, severally, before 11:00 a.m. (New York
     City time) on the date of the proposed Borrowing, make available to the
     Loan Agent at the account referenced in Section 2.9(a), in immediately
     available funds, an amount equal to its ratable portion of each Tranche of
     the proposed Borrowing. After the Loan Agent's receipt of such funds, the
     Loan Agent will make such funds available to the particular Borrower which
     is actually to apply such funds in accordance with Section 2.4(f). The
     failure of any Lender to make its ratable portion of any Loan as required
     hereunder shall not relieve any other Lender of its obligations to make its
     ratable portion of such Loan or any other Loan as required hereunder.

          SECTION 2.3 SCHEDULED REPAYMENT OF THE LOANS.

               (a) Accrued Interest due on the Loans on each Interest Payment
     Date shall be capitalized and added to the outstanding principal amount of
     the Loans.

               (b) The outstanding principal amount of the Loans shall be due
     and payable on the Loan Maturity Date.

               (c) Notwithstanding any other provision of the Loan Documents,
     the outstanding principal amount of the Loans will be forgiven in writing
     by the Loan Agent on the Loan Maturity Date (as defined in the Other Loan
     Agreement) or an earlier date, if on that date the outstanding principal
     amount of, accrued interest on, and all other amounts due under the Other
     Loan Agreement Loans and the Other Loan Agreement Notes have been paid in
     full and the Other Obligations, if any, then due have been indefeasibly
     paid in full.

          SECTION 2.4 EVIDENCE OF DEBT; USE OF PROCEEDS.

               (a) Each Lender shall maintain in accordance with its usual
     practice an account or accounts evidencing such Lender's portion of the
     Loans outstanding from time to time, including, by Tranche, the amounts of
     principal and interest payable and paid to such Lender from time to time
     under this Agreement.

               (b) The Loan Agent shall establish and maintain a Register on
     behalf of the Borrowers pursuant to Section 2.4(e), and a subaccount for
     each Lender therein, in which shall be recorded (i) the amount of each Loan
     hereunder and each Interest Period applicable thereto; (ii) the amount of
     any principal or interest due and payable or to become due and payable from
     the Borrowers to each Lender hereunder; (iii) the date and amount of each
     payment on the Loans, by Tranche, made

                                       25

<PAGE>

     by or on behalf of, or collected from, the Borrowers and (iv) the amount of
     each such payment applied in accordance with each clause of Section 2.9(d)
     and (e) or other applicable terms hereof to scheduled principal of or
     interest on the Loans.

               (c) The entries made in the accounts maintained pursuant to
     clauses (a) and (b) of this Section 2.4 shall, to the extent permitted by
     applicable law, be prima facie evidence of the existence and amounts of the
     obligations recorded therein; provided, however, that the failure of any
     Lender or the Loan Agent to maintain such accounts or any error therein
     shall not in any manner affect the obligations of the Borrowers to repay
     the Loans in accordance with the terms hereof.

               (d) The Borrowers shall execute and deliver to the Loan Agent on
     the Closing Date a single promissory note for each Tranche, each
     substantially in the forms of Exhibit B, in the principal amount of the
     aggregate Commitments for such Tranche dated the Closing Date and otherwise
     appropriately completed (each such note, including any replacement note
     therefor issued in accordance with the provisions of this Section 2.4(d)
     but excluding any note so replaced, a "Note"). Promptly following each Loan
     on each Funding Date, each Lender shall update the grid attached to its
     Note and deliver a certified copy thereof to the Borrowers. If a Note is
     mutilated, lost, stolen or destroyed, the Borrowers shall, at the cost and
     expense of the Lender, issue a new Note in the same principal amount and
     having the same interest rate, date, maturity and Tranche as the Note so
     mutilated, lost, stolen or destroyed, endorsed to indicate all payments
     thereon, together with an Officer's Certificate of the Borrowers certifying
     and warranting as to the due authorization, execution and delivery of the
     new Note. In the case of any lost, stolen or destroyed Note, there shall
     first be furnished (i) to the Borrowers, at Borrowers' option, either
     adequate security to hold Borrowers harmless with respect to such lost,
     mutilated, stolen or destroyed Note or an instrument of indemnity from the
     relevant Lender and (ii) to the Borrowers and the Loan Agent evidence of
     such loss, theft or destruction reasonably satisfactory to each of them.

               (e) The Notes are registered instruments. The original of each
     Note shall be evidence of the rights of each Lender under this Agreement
     and such Note. Neither this Agreement nor any Note is a bearer instrument.
     The Loan Agent will establish and maintain on behalf of the Borrowers a
     record of ownership (the "Register") in which the Loan Agent agrees to
     register by book entry the Loan Agent's and each Lender's interest in the
     Loans, the Notes and this Agreement, and in the right to receive any
     payments hereunder or thereunder and any assignment of any such interest or
     rights. In connection with any assignment pursuant to Section 9.2, the Loan
     Agent shall maintain a copy of each Assignment and Assumption delivered to
     and accepted by it and shall record the names and addresses of the Lenders
     and principal amount of the Loans, by Tranche, owing to each Lender from
     time to time. The Borrowers, upon request and at the expense of the
     relevant Lender and the return of the Note to be replaced to the Borrowers
     marked "cancelled" (or, if the Note to be replaced has been mutilated,
     lost, stolen or destroyed, adequate security or an instrument of indemnity
     as described in the last sentence of Section 2.4(d)), agree to issue
     replacement Notes upon any assignment or participation made pursuant to

                                       26

<PAGE>

     Section 9.2. The identities of the Note holders entered in the Register
     shall be conclusive and binding for all purposes, absent manifest error,
     and the Obligors, the Loan Agent and the Lenders shall treat each Person
     whose name is recorded in the Register as the owner of the Obligations as
     indicated in the Register for all purposes of this Agreement. The Register
     shall be available for inspection by the Borrowers, the Loan Agent, or any
     Lender at any reasonable time and from time to time upon reasonable prior
     notice.

               (f) Use of Proceeds.

                    (i) The Borrowers shall use the proceeds of the Loans as
     follows:

                         (1) The proceeds of Tranche A Loans, Tranche D Loans,
     and Tranche E Loans shall be used by the Borrowers for working capital and
     general corporate purposes of either of them, including, without
     limitation, capital expenditures and acquisitions.

                         (2) The proceeds of Tranche B Loans shall be used by
     the Borrowers solely to make debt service payments due through June, 2006
     under the A321 Airbus Financings or to reimburse US Airways for any such
     payments made on or after the date of the MOU (May 18, 2005) but prior to
     the date of such Loan.

                         (3) The proceeds of Tranche C Loans shall be used by
     the Borrowers solely to pay, or to reimburse either of them for the payment
     on or after the date of the MOU (May 18, 2005) of, Permitted Invoices.

                    (ii) No portion of the proceeds of any Loans shall be used
     by the Borrowers or any of their Subsidiaries in any manner that would
     cause the borrowing or the application of such proceeds to violate
     Regulation U, Regulation T or Regulation X of the Board of Governors of the
     Federal Reserve System or any other regulation of such Board of Governors
     or to violate Section 7(c) of the Exchange Act, in each case as in effect
     on the date or dates of such borrowing and such use of proceeds.

          SECTION 2.5 OPTIONAL PREPAYMENTS.

               (a) The Borrowers may on any Business Day, upon revocable notice
     to the Loan Agent not less than ten (10) Business Days prior thereto,
     prepay all or any portion of the outstanding principal amount of such Loans
     held directly or indirectly by Airbus or its Affiliates, in whole or in
     part (but, with respect to any partial prepayment, not less than a minimum
     amount of $1,000,000, plus any whole multiple of $100,000, or such lesser
     amount as results in a prepayment of such Loans in full), together with
     accrued interest to the date of such prepayment on the principal amount
     prepaid; provided, however, that if any prepayment of all or a portion of
     such Loans is made by the Borrowers other than on an Interest Payment

                                       27

<PAGE>

     Date, the Borrowers shall also pay any amounts owing pursuant to Section
     2.10(e). Except for any such amounts owing pursuant to Section 2.10(e),
     prepayments pursuant to this Section 2.5(a) shall be without premium or
     penalty.

               (b) Upon the giving of any notice of prepayment under clause (a)
     of this Section 2.5, the principal amount of the Loans specified to be
     prepaid together with accrued and unpaid interest thereon and other
     amounts, if any, due with respect thereto as provided in Section 2.5(a),
     shall become due and payable on the date specified for such prepayment;
     provided, however, that any failure to make any such prepayment in full on
     such date shall be deemed to be an automatic revocation of the notice of
     prepayment given under Section 2.5(a) and such failure shall not constitute
     a Default or an Event of Default hereunder; provided, further, however,
     that the Borrowers shall be obligated to pay on such date any amounts owing
     under Section 2.10(e) due to such failure to prepay.

               (c) Any partial prepayment of the Loans under Section 2.5(a)
     shall be applied pro rata as among the outstanding Tranches of the Loans
     held directly or indirectly by Airbus or its Affiliates and pro rata among
     the Loans in each such Tranche, and to the then remaining installments of
     the outstanding principal amount of the Loans held, directly or indirectly,
     by Airbus or its Affiliates on a pro rata basis. Any such prepayment shall
     be paid to the Loan Agent for application as provided in Section 2.9. The
     Borrowers shall have no right to optionally prepay the principal amount of
     the Loans held, directly or indirectly, by Airbus or its Affiliates other
     than as provided in this Section 2.5 and Section 2.10, 2.12 or 9.1.

               (d) The Borrowers shall have the same prepayment rights with
     respect to Loans not held, directly or indirectly, by Airbus or its
     Affiliates as set forth above in this Section 2.5; provided, however, that
     if requested by the Initial Lender in connection with a transfer or sell
     down transaction into the capital markets as envisioned in Section 9.2(e),
     the Borrowers shall have such prepayment rights as are determined as
     provided in Section 9.2(c).

          SECTION 2.6 MANDATORY PREPAYMENTS.

               (a) Collateral Sales. Upon receipt by any Borrower or any
     Subsidiary of Net Cash Proceeds of an Asset Sale of any Collateral
     (including without limitation, any Airbus A321 model aircraft then subject
     to an A321 Airbus Financing). The Borrowers shall prepay the Loans and the
     other Obligations then due in an aggregate amount equal to the Net Cash
     Proceeds of such sale, which have not been applied to payment of the Other
     Loan Agreement Loans under Section 2.6(a) of the Other Loan Agreement,
     provided that no such prepayment shall be required for Asset Sales of Spare
     Parts until the aggregate amount thereof (not applied to prior prepayments)
     exceeds $100,000. In the event that any such Asset Sale results in a note
     payable to any Borrower or any Subsidiary, such note shall be pledged by
     such Borrower or Subsidiary, as the case may be, as collateral security for
     the obligations and the Cross-Default Obligations in a manner reasonably
     satisfactory to the Loan Agent. Any partial prepayments of the Loans made
     by the Borrowers in accordance

                                       28

<PAGE>

     prepayments of the Loans made by the Borrowers in accordance with this
     Section 2.6(a) shall be applied pro rata as among the outstanding Tranches
     of the Loans and pro rata among the Loans in each such Tranche and to the
     then remaining installments of the outstanding principal balance of the
     Loan on a pro rata basis. If any such prepayment is made by the Borrowers
     other than on an Interest Payment Date, subject to clause (c) below, the
     Borrowers shall also pay any amounts owing pursuant to Section 2.10(e). Any
     such prepayment of the Loan shall be paid to the Loan Agent for application
     as provided in Section 2.9.

               (b) Insurance/Condemnation Proceeds. No later than three Business
     Days following the date of receipt by the Borrowers or any of their
     Subsidiaries of any Net Insurance Proceeds of any Collateral, except as
     provided in Section 3.04(a) of the Engine Mortgage and Security Agreement
     if an Engine (as defined therein) is being replaced, in Section 6.01(a) of
     any Aircraft Mortgage, if an Aircraft or Airframe is being replaced, and in
     Section 3.05(d)(1) of the Spare Parts Mortgage and Security Agreement, if a
     Spare Part is being replaced, the Borrower shall prepay the Loans and any
     other Obligations then due in an amount equal to the amount of such Net
     Insurance Proceeds; provided that no such prepayment shall be required
     until the aggregate amount thereof (not applied to prior prepayments)
     exceeds $100,000; and provided, further that in the case of a prepayment
     required by Section 3.04(a) of the Engine Mortgage and Security Agreement
     or Section 6.01(a) of any Aircraft Mortgage on a date before the date on
     which Net Insurance Proceeds has been received, such prepayment of the
     Loans in the amount specified in the next sentence hereof, and on the date
     specified in such Senior Mortgage, shall be made in lieu of the prepayment
     out of the Net Insurance Proceeds required by this sentence. The amount to
     be prepaid pursuant to the proviso to the preceding sentence shall be the
     Agreed Value (as defined in the applicable Senior Mortgage) minus the
     applicable prepayment amount under such applicable Senior Mortgage. Any
     partial prepayments of the Loans made by the Borrowers in accordance with
     this Section 2.6(b) shall be applied pro rata as among the outstanding
     Tranches of the Loans and pro rata among the Loans in each such Tranche and
     to the then remaining installments of the outstanding principal balance of
     the Loan on a pro rata basis. If any such prepayment is made by the
     Borrowers other than on an Interest Payment Date, subject to clause (c)
     below the Borrowers shall also pay any amounts owing pursuant to Sections
     2.5(d) and 2.10(e). Any such prepayment of the Loans shall be paid to the
     Loan Agent for application as provided in Section 2.9.

               (c) Notwithstanding the foregoing, if no Default or Event of
     Default has occurred and is continuing, the Borrower shall be entitled to
     postpone the date of prepayment under Section 2.6(a) or (b) as follows. At
     least one (1) Business Day prior to the required date of such prepayment,
     Borrower shall notify the Loan Agent and each Lender of its election to
     postpone the date of such prepayment to the next succeeding Interest
     Payment Date and on the date required for such prepayment the Borrower
     shall pay to the Loan Agent, for deposit in a collateral account
     established with the Loan Agent and under its name and sole dominion and
     control, as security for the Obligations and the Cross-Default Obligations,
     an amount equal to the amounts the Borrower would have paid under Section
     2.6(a) or (b), as the case may be, as a prepayment of the Loans on such
     date. The Loan shall remain

                                       29

<PAGE>

     outstanding and on the next succeeding Interest Payment Date the Borrower
     shall pay the installment of interest and principal and any other amounts
     then due, plus the amount required to prepay the Loan in whole or in part
     on such Interest Payment Date (calculated as provided in Section 2.6(a) or
     (b), as the case may be, less the amount available to the Loan Agent (out
     of the funds held by it as aforesaid as collateral security) which shall be
     applied in reduction of the Borrower's obligations on such Interest Payment
     Date. Notwithstanding the foregoing, if an Event of Default shall occur and
     be continuing, funds on deposit in the aforesaid collateral account shall
     be subject to distribution under Section 2.9(d) and the provisions of
     Section 6.2 shall not be prejudiced by the foregoing prepayment
     arrangement.

               (d) Notwithstanding any other provision hereof or of the
     Collateral Documents, no mandatory prepayment of the loans under this
     Section 2.6 shall be required before the date on which any amount of
     principal of, or accrued interest on, the Loans becomes due (at maturity,
     by reason of acceleration or otherwise).

          SECTION 2.7 INTEREST.

               (a) Rate of Interest. Except as otherwise provided in Section
     2.7(c) and Section 2.10, each Loan shall bear interest on the unpaid
     principal amount thereof for each day such Loan is outstanding during any
     Interest Period at the Applicable Interest Rate for such Interest Period.
     Notwithstanding any other provision hereof, interest on the Loans shall not
     exceed the maximum allowable under applicable law.

               (b) Interest Payments. Interest accrued on each Loan and each
     Note shall be payable in arrears on the last day of each applicable
     Interest Period (an "Interest Payment Date"), upon the payment or
     prepayment thereof in whole or in part (solely to the extent of the portion
     paid or prepaid), and, if not previously paid in full, at maturity (whether
     by acceleration or otherwise), subject to the provisions of Section 2.3(c).
     Interest on each Loan shall be calculated on the basis of a year of 360
     days and actual number of days elapsed.

               (c) Default Interest. Notwithstanding the rate of interest
     specified in Section 2.7(a) or elsewhere herein, if any principal of or
     interest on a Loan or any fee or other amount payable by the Borrowers
     hereunder is not paid when due, whether at stated maturity, upon
     acceleration, by mandatory prepayment or otherwise (but other than any
     voluntary prepayment), such overdue amount shall bear interest at a rate
     which is two percent per annum in excess of the Applicable Interest Rate as
     in effect from time to time.

          SECTION 2.8 FEES. No up-front, commitment or other fees are payable on
or with respect to the Commitments or the Loans.

                                       30

<PAGE>

          SECTION 2.9 PAYMENTS AND COMPUTATIONS.

               (a) The Borrowers shall make each payment hereunder (including
     fees and expenses) not later than 12 noon (New York City time) on the day
     when due, in Dollars, to the Loan Agent in immediately available funds
     without set-off, counterclaim, claim of recoupment or other defense (except
     for any required withholding taxes not subject to indemnification
     hereunder) to the following account (unless otherwise advised):

          ACCOUNT OF : AIRBUS FINANCIAL SERVICES
          ACCOUNT AT : CALYON, NEW YORK
          SWIFT CODE : CRLYUS33
          CHIPS ID   : 807
          ABA REF    : 026 008 073
          ACCOUNT NO : 01 22456 0001 00

All payments in respect of any Obligations shall at all times be made to the
Loan Agent. The Loan Agent will promptly cause all such payments received by it
to be distributed to the Person entitled thereto in accordance with the
priorities of payment set forth below in clause (d) or (e) of this Section 2.9
or both, as applicable. Payments received by the Loan Agent after 2:00 p.m. (New
York City time) shall, solely for the calculation and accrual of interest
pursuant to the provisions hereof, be deemed to be received on the next Business
Day.

               (b) Each determination by the Loan Agent of an interest rate
     hereunder shall be presumed correct, absent manifest error.

               (c) Whenever any payment hereunder shall be stated to be due on a
     day other than a Business Day, such payment shall be due on the next
     succeeding Business Day, unless the result of such extension would be to
     extend such payment date into another calendar month, in which event such
     payment date shall end on the immediately preceding Business Day and for
     the avoidance of doubt, interest computation shall be adjusted accordingly.

               (d) So long as no Event of Default under any of Sections 6.1(a)
     (including any failure to pay all amounts hereunder upon acceleration as a
     result of any other Event of Default), (f) and (g) has occurred and is
     continuing or would result therefrom, the Loan Agent shall promptly apply
     all payments received by it in respect of any Obligations in the following
     order:

                    (i) first, to pay interest then due and payable in respect
     of the Loans to the Lenders, on a pro rata basis;

                    (ii) second, to pay principal then due and payable on the
     Loans to the Lenders, on a pro rata basis;

                                       31

<PAGE>

                    (iii) third, to pay any other Obligations then due and
     payable to the Loan Agent, the Collateral Agent and the Lenders, on a pro
     rata basis; and

                    (iv) fourth, to the Borrowers or their respective designees.

               (e) After the occurrence and during the continuance of an Event
     of Default under any of Sections 6.1(a) (including any failure to pay all
     amounts hereunder upon acceleration as a result of any other Event of
     Default), (f) or (g), the Loan Agent shall promptly apply all payments in
     respect of any Obligations or Cross-Default Obligations (including amounts
     received by the Collateral Agent upon the exercise of remedies with respect
     to the Collateral or the Cross-Collateral) in the following order:

                    (i) first, to pay Obligations in respect of any expenses,
     indemnities or other amounts owing hereunder not referred to in clauses
     (ii) through (v) below then due and payable to the Lenders, the Loan Agent
     or the Collateral Agent, on a pro rata basis;

                    (ii) second, to pay interest then due and payable in respect
     of the Loans to the Lenders, on a pro rata basis;

                    (iii) third, to pay or prepay principal payments on the
     Loans to the Lenders or other Obligations to the respective parties
     entitled thereto, on a pro rata basis, or to be held by, the Loan Agent as
     additional collateral for any Obligations which are not at the time due and
     payable;

                    (iv) fourth, to pay any Cross-Default Obligations then due
     and payable to the respective parties entitled thereto, on a pro rata
     basis, or to be held by the Loan Agent as Collateral for any Cross-Default
     Obligations which are not at the time due and payable; and

                    (v) fifth, after payment in full of the Cross-Default
     Obligations, to the Borrowers or their respective designees.

          SECTION 2.10 CERTAIN PROVISIONS GOVERNING THE LOANS.

               (a) Certain Determinations. LIBOR for each Interest Period for
     each Loan shall be determined by the Loan Agent pursuant to the procedures
     set forth in the definition of "LIBOR", and shall promptly thereafter be
     notified to the Borrowers and each Lender together with the Applicable
     Margin and the Applicable Interest Rate for such Interest Period (in
     writing or by email or by telephone confirmed in writing or by email). The
     Tranche A, Tranche B, Tranche C, Tranche D and Tranche E Commitment
     Increase Amount for the Lenders (and for each Lender) shall be determined
     by the Loan Agent as provided in the respective definitions of those terms,
     and promptly upon receipt of notice thereof from the Other Loan

                                       32

<PAGE>

     Agreement Loan Agent shall be notified by the Loan Agent to each Lender,
     the Borrower and the Collateral Agent. The Tranche A, Tranche B, Tranche C,
     Tranche D and Tranche E Commitment Increase Amounts for the Lenders shall
     not exceed $89,000,000. A certificate of the Loan Agent setting forth the
     applicable LIBOR, the Applicable Margin and the adjusted Applicable
     Interest Rate, or the Tranche A, Tranche B, Tranche C, Tranche D or Tranche
     E Commitment Increase Amounts, shall be presumed correct absent manifest
     error. The Loan Agent shall, at the request of either Borrower, deliver to
     the Borrowers a statement showing the quotations used by the Loan Agent to
     determine LIBOR, the Applicable Margin and the Applicable Interest Rate,
     such statement to be in sufficient detail for the Borrowers to reasonably
     determine whether any such manifest error has occurred.

               (b) Interest Rate Unascertainable. In the event that the Loan
     Agent determines that, at the time the Loan Agent is to determine the
     Applicable Interest Rate for an Interest Period, by reason of circumstances
     affecting the London interbank market for U.S. Dollar deposits, adequate
     and fair means do not exist for ascertaining the applicable interest rates
     by reference to which the LIBOR then being determined is to be fixed, the
     Loan Agent shall forthwith so notify the Borrowers and the Lenders,
     whereupon during the 30 days following the date of any such notice given to
     the Borrowers, the Loan Agent and the Borrowers shall negotiate in good
     faith in order to arrive at a mutually acceptable alternative basis for
     determining the interest rate from time to time applicable to the Loans
     (the "Substitute Basis"). If within the 30 days following the date of any
     such notice to the Borrowers, the Loan Agent and the Borrowers shall agree
     upon a Substitute Basis, such Substitute Basis shall be retroactive to and
     effective from the first day of the then current Interest Period until and
     including the last day of such Interest Period. If after 30 days from the
     date of such notice, the Loan Agent and the Borrowers shall have failed to
     agree upon a Substitute Basis, then the Loan Agent (upon instructions from
     the Requisite Lenders) shall certify in writing to the Borrowers the
     interest rate at which such Lenders are prepared to maintain their portion
     of the Loans for such Interest Period, it being understood that such
     Lenders' interest rate shall be not more than a rate per annum equal to a
     rate which adequately and fairly reflects the cost to such Lenders of
     obtaining the funds necessary to maintain their portion of the Loans for
     such Interest Period. If no Substitute Basis is established, upon receipt
     of notice of the interest rates at which the Requisite Lenders are prepared
     to maintain their respective portion of the Loans, and on the last day of
     each Interest Period thereafter, the Borrowers shall have the right
     exercisable upon ten Business Days' prior notice to the Loan Agent (i) to
     continue to borrow the Loans at the interest rate so advised by the Loan
     Agent (as such rate may be modified, from time to time, at the outset of
     each subsequent Interest Period) or (ii) to prepay in full the Loans
     together with accrued but unpaid interest thereon at the Applicable
     Interest Rate most recently in effect, whereupon the Loans shall become due
     and payable on the date specified by the Borrowers in such notice.

               (c) Increased Costs. If at any time (i) the introduction after
     the date hereof of or any change after the date hereof in or in the
     interpretation of any law, treaty or governmental rule, regulation or order
     binding on any Lender or (ii) the

                                       33

<PAGE>

     compliance by any Lender with any guideline, request or directive enacted
     or imposed or made after the date hereof from any central bank or other
     Governmental Authority (whether or not having the force of law) shall (A)
     impose, modify, or deem applicable any reserve, special deposit or similar
     requirement against assets of, deposits with or for the account of, or
     credit extended by, any Lender, or (ii) impose on any Lender any other
     condition, and the result of any of the foregoing shall be to materially
     increase the cost to such Lender of agreeing to make or making, funding, or
     maintaining any portion of the Loans (except with respect to Excluded
     Taxes), then the Borrowers shall from time to time, within ten Business
     Days of written demand (which demand shall be accompanied by a certificate
     setting forth the basis for such demand and a calculation of the amount
     thereof in reasonable detail) by such Lender (with a copy of such demand
     and certificate to the Loan Agent), pay to the Loan Agent for the account
     of such Lender, additional amounts sufficient to compensate such Lender for
     such increased cost. Such a certificate submitted to the Borrowers and the
     Loan Agent by such Lender shall be presumptively correct absent manifest
     error. Notwithstanding the provisions of this paragraph, (x) the Borrowers
     shall not be obligated to pay any amounts pursuant to this paragraph for
     periods occurring prior to the 60th day before the giving of such
     certificate, provided that if the circumstances giving rise to such claim
     have a retroactive effect then such 60 day period shall be extended to then
     include such period of retroactive effect, and (y) the Borrowers shall not
     be required to make any payment otherwise required hereby to any Lender
     unless such Lender states in its written demand that such claim is not
     being made on a basis that discriminates against the Borrower as compared
     to comparable extensions of credit with similarly situated borrowers.

               (d) Illegality. Notwithstanding any other provision of this
     Agreement, if the introduction of or any change in or in the interpretation
     of any law, treaty or governmental rule, regulation or order, in each case
     after the date of this Agreement, shall make it unlawful for any Lender to
     continue to fund or maintain its portion of the Loans as contemplated
     hereby, then, on notice thereof by such Lender to the Borrowers through the
     Loan Agent, the obligation of such Lender to continue to fund or maintain
     its portion of the Loan shall be terminated and the Borrowers shall prepay
     such affected portion of the Loan to such Lender together with accrued but
     unpaid interest thereon and all other sums payable hereunder with respect
     thereto on the last day of the then current Interest Period or earlier if
     necessary to avoid such illegality. Any such partial prepayment of the Loan
     shall be applied ratably to the then unpaid installments thereof in
     accordance with the amount of each such unpaid installment.

               (e) Breakage Costs. In addition to all amounts required to be
     paid by the Borrowers pursuant to Section 2.7, the Borrowers shall
     compensate each Lender, at the time specified herein, or if no such time is
     specified, within ten Business Days of written demand (with a copy of such
     demand to the Loan Agent), for all net losses, expenses and liabilities
     (including any loss or expense incurred by reason of the liquidation or
     reemployment of deposits or other funds acquired by such Lender or the
     termination of any other financial arrangement it may have entered into to
     fund or maintain or support such Lender's portion of the Loan, including
     any net

                                       34

<PAGE>

     loss of interest but excluding any other lost profit or any Taxes based on
     the overall net income of such Lender) which such Lender actually sustains
     as a consequence of (i) any proposed Borrowing not occurring on a date
     specified therefor in any Notice of Borrowing given by any Borrower, (ii)
     any portion of the Loans being prepaid (including, subject to Section
     2.6(c), mandatorily pursuant to Section 2.6 or this Section 2.10) on a date
     which is not the last day of the applicable Interest Period, or (iii) any
     failure by any Borrower to repay any portion of the Loans when required by
     the terms hereof (after giving effect to any grace periods). Any written
     demand by a Lender under this Section 2.10(e) shall be accompanied by a
     certificate setting forth the basis for such demand and a calculation of
     the amount thereof in reasonable detail by such Lender. Such a certificate
     submitted to the Borrowers and the Loan Agent by a Lender shall be
     presumptively correct absent manifest error. Amounts paid under this
     Section 2.10(e) shall be paid to the Loan Agent for the account of the
     applicable Lender. Notwithstanding the provisions of this paragraph, the
     Borrowers shall not be obligated to pay any amounts pursuant to this
     paragraph for periods occurring prior to the 60th day before the giving of
     such certificate, provided that if the circumstances giving rise to such
     claim have a retroactive effect then such 60 day period shall be extended
     to then include such period of retroactive effect.

          SECTION 2.11 CAPITAL ADEQUACY. If at any time (a) the adoption of or
any change in or in the interpretation of any law, treaty or governmental rule,
regulation or order after the date of this Agreement regarding capital adequacy,
(b) compliance with any such law, treaty, rule, regulation, or order, or (c)
compliance with any guideline or request or directive made after the date hereof
from any central bank or other Governmental Authority (whether or not having the
force of law) shall have the effect of reducing the rate of return on such
Lender's (or any corporation controlling such Lender's) capital as a consequence
of its obligations hereunder (other than for changes in the rate of tax on the
overall net income of such Lender) to a level below that which such Lender or
such corporation could have achieved but for such adoption, change, compliance
or interpretation by an amount deemed by such Lender to be material, then,
within ten Business Days following written demand from time to time by such
Lender (with a copy of such demand to the Loan Agent), the Borrowers shall pay
to the Loan Agent for the account of such Lender from time to time as specified
by such Lender additional amounts sufficient to compensate such Lender for such
reduction. Any written demand by a Lender under this Section 2.11 shall be
accompanied by a certificate setting forth the basis for such demand and a
calculation of the amount thereof in reasonable detail by such Lender. Such a
certificate submitted to the Borrowers and the Loan Agent by a Lender shall be
presumptively correct absent manifest error. Notwithstanding the provisions of
this paragraph, (x) the Borrowers shall not be obligated to pay any amounts
pursuant to this paragraph for periods occurring prior to the 60th day before
the giving of such certificate, provided that if the circumstances giving rise
to such claim have a retroactive effect then such 60 day period shall be
extended to then include such period of retroactive effect, and (y) the
Borrowers shall not be required to make any payment otherwise required hereby to
any Lender unless such Lender is generally demanding payment under comparable
provisions of its agreements with similarly situated borrowers.

                                       35

<PAGE>

          SECTION 2.12 SUBSTITUTION OF LENDERS.

               (a) In the event that no Event of Default has occurred and is
     continuing and (i) any Lender makes a claim under Section 2.10(c) or (e) or
     Section 2.11, (ii) it becomes unlawful for any Lender to continue to fund
     or maintain its portion of the Loans as contemplated hereby and such Lender
     notifies the Borrowers pursuant to Section 2.10(d), (iii) any Obligor is
     required to make any payment pursuant to Section 2.13 that is attributable
     to a particular Lender, (iv) any Lender fails to fund any Loans as required
     hereby or (v) there shall exist a Non-Consenting Lender in respect of a
     Proposed Change to which the Loan Agent consents (any such Lender, an
     "Affected Lender"), the Borrowers may substitute any other Lender or any
     other financial institution which will eliminate the continued need to make
     such payments and which is reasonably acceptable to the Loan Agent (a
     "Substitute Institution") for such Affected Lender hereunder, after
     delivery of a written notice (a "Substitution Notice") by the Borrowers to
     the Loan Agent and the Affected Lender following the occurrence of any of
     the events described in clauses (i) through (v) above that the Borrowers
     intend to make such substitution.

               (b) If the Substitution Notice was properly issued under this
     Section 2.12, the Affected Lender shall sell, and the Substitute
     Institution shall purchase, in accordance with Section 9.2, all rights and
     obligations (except with respect to prior periods) of such Affected Lender
     under the Loan Documents. Such purchase and sale (and the corresponding
     assignment of all rights and obligations (except with respect to prior
     periods) hereunder) shall be effective on the later of (i) the receipt by
     the Affected Lender of an amount equal to the unpaid principal amount,
     accrued interest on, and other amounts due in respect of, its outstanding
     Loans, together with any other Obligations owing to it, (ii) the receipt by
     the Loan Agent of an Assignment and Assumption whereby the Substitute
     Institution shall agree to be bound by the terms hereof and (iii) without
     duplication, the payment in full to the Affected Lender in cash of all
     unreimbursed costs and expenses and indemnities accrued and unpaid through
     such effective date.

               (c) If any Lender requests compensation under Section 2.10(c) or
     (e), 2.11 or 2.13, or if any Borrower is required to pay any additional
     amount to any Lender or any Governmental Authority for the account of any
     Lender pursuant to Section 2.13, then such Lender shall use reasonable
     efforts to designate a different lending office for funding or booking its
     Loans hereunder or to assign its rights and obligations hereunder to
     another of its offices, branches or Affiliates, if, in the judgment of such
     Lender, such designation or assignment (i) would eliminate or reduce
     amounts payable pursuant to Section 2.10(c) or (e), 2.11 or 2.13, as the
     case may be, in the future and (ii) would not subject such Lender to any
     material unreimbursed cost or expense and would not otherwise be
     disadvantageous to such Lender.

                                       36

<PAGE>

          SECTION 2.13 TAXES.

               (a) Except as otherwise provided in Section 9.2 or as required by
     applicable law, any and all payments by the Borrowers under each Loan
     Document shall be made free and clear of and without deduction for any and
     all Taxes, excluding (i) in the case of each Lender, each Participant and
     the Loan Agent taxes measured by its net income, and franchise taxes
     (imposed in lieu of net income taxes) imposed on it, by the jurisdiction
     under the laws of which such Lender, such Participant or the Loan Agent (as
     the case may be) is organized or is otherwise treated as doing business
     (other than a jurisdiction in which such Person is treated as doing
     business as a result of its execution and delivery of any Loan Document or
     its exercise of its rights or performance of its obligations or the receipt
     of income thereunder), (ii) in the case of each Lender and each
     Participant, taxes measured by its net income, and franchise taxes (imposed
     in lieu of net income taxes) imposed on it, by the jurisdiction in which
     such Lender's Lending Office is located or in which such Participant booked
     its participation for tax accounting purposes, (iii) in the case of each
     Lender, each Participant, and the Loan Agent, Taxes imposed as a result of
     such Person or the Loan Agent failing to comply with its obligations under
     Section 2.13(g), (iv) in the case of each Lender, each Participant, and the
     Loan Agent, as the case may be, United States federal withholding taxes
     except to the extent imposed as a result of a change in applicable law,
     including income tax conventions, after the Closing Date or, with respect
     to an assignment, acquisition, participation, designation of a different
     office or jurisdiction for purposes of receiving or paying amounts
     hereunder, or the appointment of a Loan Agent, the effective date thereof,
     except (x) to the extent that such Person's predecessor was entitled to
     such amounts (or in the case of a designation of a new jurisdiction, to the
     extent such Person was entitled to such amounts with respect to its prior
     jurisdiction) or (y) in the case of an assignment or change of lending
     office pursuant to Section 2.13(g), and (v) Taxes to the extent imposed as
     a result of the gross negligence or willful misconduct of the Loan Agent,
     such Lender or any of their Affiliates (all such non-excluded Taxes being
     referred to as "Indemnified Taxes" and all Taxes listed in clauses (i)
     through (v) of this clause (a) being referred to as "Excluded Taxes"). If
     any Indemnified Taxes shall be required by law to be deducted from or in
     respect of any sum payable under any Loan Document to any Lender or the
     Loan Agent (i) the sum payable shall be increased as may be necessary so
     that after making all required deductions (including deductions applicable
     to additional sums payable under this Section 2.13) such Lender, or the
     Loan Agent (as the case may be) receives an amount equal to the sum it
     would have received had no such deductions been made, (ii) the Borrowers
     shall make such deductions, and (iii) the Borrowers shall pay the full
     amount deducted to the relevant taxing authority or other authority in
     accordance with applicable law.

               (b) In addition, the Borrowers agree to pay any present or future
     stamp or documentary taxes or any other excise or property taxes, charges
     or similar levies of the United States or any political subdivision thereof
     or any applicable foreign jurisdiction, and all liabilities with respect
     thereto, which arise from any payment made under any Loan Document or from
     the execution, delivery or registration of, or otherwise with respect to,
     any Loan Document excluding, in each

                                       37

<PAGE>

     case, such amounts that result from an assignment, grant of a
     participation, transfer or designation of a new Lending Office or other
     office for receiving payments under any Loan Document unless (x) the same
     takes place in connection with an Event of Default (so long as such Event
     of Default is continuing) or at Borrower's written request (collectively,
     "Other Taxes") to the Loan Agent for the account of the affected party or
     (y) in the case of an assignment or change of lending office pursuant to
     Section 2.13(g).

               (c) The Borrowers will indemnify each Lender and the Loan Agent
     for the full amount of Indemnified Taxes or Other Taxes, without
     duplication, (including any Taxes imposed by any jurisdiction on amounts
     payable under this Section 2.13) paid by such Lender or the Loan Agent (as
     the case may be) and any liability (including for penalties, interest and
     expenses) arising therefrom or with respect thereto. This indemnification
     shall be made to the Loan Agent for account of the relevant Lender or the
     Loan Agent, as the case may be, within 30 days from the date such Lender or
     the Loan Agent (as the case may be) makes written demand therefor (with a
     copy to the Loan Agent if made by a Lender, and accompanied by a statement
     setting forth the basis for such taxation and the calculation of the amount
     thereof in reasonable detail).

               (d) Within 30 days after the date of any payment of Indemnified
     Taxes or Other Taxes, the Borrowers will furnish to the Loan Agent the
     original or a certified copy of a receipt evidencing payment thereof or
     other documentation reasonably satisfactory to the Loan Agent.

               (e) Without prejudice to the survival of any other agreement of
     the Borrowers hereunder, the agreements and obligations of the parties
     contained in this Section 2.13 shall survive the payment in full of the
     Obligations.

               (f) Each Lender, each Participant and the Loan Agent shall, on or
     prior to the Closing Date or on or prior to the date of the Assignment and
     Assumption pursuant to which it becomes a Lender or on or prior to the date
     such Person becomes a Participant or the Loan Agent, as applicable, and
     from time to time thereafter if reasonably requested by the Loan Agent or
     the Borrowers, provide the Loan Agent and the Borrowers, with two completed
     copies of IRS Form W-8BEN, W-8ECI, W-8IMY, W-9 and/or other applicable
     forms, certificates and documents prescribed by the IRS with respect to
     United States withholding and/or backup withholding tax with respect to all
     payments to be made to such Person under the Loan Documents. In addition,
     each Lender, each Participant and the Loan Agent, as the case may be, shall
     deliver to the Borrowers and the Loan Agent, notice of any event (other
     than a change in applicable law, including income tax conventions)
     requiring a change in the most recent form certificates and/or documents
     previously delivered by such Person to the Borrowers and the Loan Agent and
     any additional, updated or changed forms, certificates or documents. Unless
     the Loan Agent and the Borrowers have received forms, certificates, and/or
     other documents reasonably satisfactory to them indicating that payments
     under the Loan Documents to or for a Non-U.S. Person are not subject to
     United States withholding tax or are subject to

                                       38

<PAGE>

     such tax at a rate reduced by an applicable tax treaty, the Loan Agent or
     the Borrowers shall, notwithstanding the provisions of Section 2.13(a), (b)
     and (d) and without impairing any obligation of the Borrowers under this
     Section 2.13 with respect to such tax, withhold such United States
     withholding taxes from such payments at the appropriate rate.

               (g) Any Lender claiming any additional amounts payable pursuant
     to this Section 2.13 shall use its reasonable efforts (consistent with its
     internal policy and legal and regulatory restrictions) to change the
     jurisdiction of its Lending Office if the making of such a change would
     avoid the need for, or reduce the amount of, any such additional amounts
     which would be payable or may thereafter accrue and would not, in the sole
     determination of such Lender, be otherwise disadvantageous to such Lender.

               (h) If the Borrower or Guarantor pays any amount under this
     Section 2.13 to a Lender, Participant or the Loan Agent (each, a "Tax
     Indemnitee") and such Tax Indemnitee determines in its sole discretion that
     it has actually realized in connection therewith a net cash benefit
     (including a net cash benefit which the relevant taxing authority applies
     to satisfy any liability of such Tax Indemnitee for Taxes) due to any
     refund or any reduction of, or credit against, its liabilities for Taxes in
     any taxable year, provided that no Event of Default shall have occurred and
     be continuing, such Tax Indemnitee shall, to the extent it can do so
     without prejudice to the retention of such benefit, pay to the Borrower or
     Guarantor (as the case may be) an amount that the Tax Indemnitee shall, in
     its sole discretion, determine (subject to confirmation as provided below)
     is equal to such net cash benefit which was obtained by Tax Indemnitee in
     such year as a consequence of such refund, reduction or credit realized in
     connection with the payment of such amount. A Tax Indemnitee shall, upon
     written request from the Borrower, provide to the Borrower a letter from
     independent accountants selected by the Tax Indemnitee and reasonably
     acceptable to the Borrower confirming the accuracy of the Lender's
     calculations of the amount of any net benefit determined by the Tax
     Indemnitee pursuant to the preceding sentence, provided that the
     interpretation of this Agreement or any other Loan Document shall not be
     within the scope of the accountants' confirmation. Nothing contained in
     this Section 2.13(h) shall be construed as requiring any Tax Indemnitee to
     conduct its business or arrange or alter in any respect its Tax or
     financial affairs so that it is entitled to receive a refund, reduction or
     credit or shall require any Tax Indemnitee to provide to the Borrower or
     its agents copies of any Tax returns or other information with respect to
     the income, assets or operations attesting to such Tax Indemnitee's
     determination. The Borrower shall reimburse such Tax Indemnitee for all
     costs and expenses incurred by such Tax Indemnitee in obtaining such
     accountants' letter, provided that the accountants' letter confirms, in all
     material respects, such Tax Indemnitee's determination.

               (i) Borrower shall have no obligation to pay, or indemnify any
     Tax Indemnitee for, any amount under this Section 2.13 or for any United
     States federal income tax or withholding tax which was required by law to
     be deducted or withheld by the Borrower or the Loan Agent from any payment
     to or for the benefit

                                       39

<PAGE>

     of such Tax Indemnitee but which was not deducted or withheld due to the
     Borrower's or the Loan Agent's reasonable reliance the withholding forms,
     certificates and/or documents theretofore delivered by such Tax Indemnitee
     or the Loan Agent pursuant to Section 2.13(f) if such form, certificate
     and/or document was inaccurate in any material respect when delivered by
     such Tax Indemnitee and/or the Loan Agent and such Tax Indemnitee or the
     Loan Agent had Actual Knowledge of such inaccuracy at the time such Tax
     Indemnitee or the Loan Agent delivered such form.

               (j) If a Tax Indemnitee receives a written claim from any taxing
     authority for any Tax for which the Borrower is liable pursuant to Section
     2.13 (a "Tax Claim"), such Tax Indemnitee shall promptly notify the
     Borrower in writing. If requested by the Borrower in writing within 30 days
     after receipt of such Tax Indemnitee's written notice (provided that if a
     response to such Tax Claim is due less than 40 days after the Borrower's
     receipt of such Tax Indemnitee's notice, the Borrower's request must be
     made within 15 days or, if longer, the period ending not later than the
     10th day before the day on which the response to such Tax Claim is due),
     such Tax Indemnitee shall in good faith contest or, at such Tax
     Indemnitee's election, permit the Borrower to contest (unless such contest
     involves Taxes not indemnified or paid by the Borrower or Guarantor or, in
     such Tax Indemnitee's reasonable, good faith judgment, permitting the
     Borrower to contest may have a material adverse effect on such Tax
     Indemnitee), in each case in accordance with and to the extent permitted by
     applicable law and at the Borrower's expense, such Tax Claim, provided that
     no Tax Indemnitee shall have any obligation to commence or continue the
     contest of any such Tax Claim unless the following conditions are satisfied
     at the time the contest is to be commenced and at all times during the
     contest:

                    (i) no Event of Default shall have occurred and be
     continuing,

                    (ii) contesting such Tax Claim would not result in (A) any
     risk of sale, forfeiture, confiscation, seizure or loss of, or the
     imposition of a Lien (other than a Lien for the Tax that is the subject of
     such contest provided that enforcement of such Lien is stayed until the
     final determination of such contest and the Borrower maintains adequate
     reserves with respect to such Lien) or (B) any risk of imposition of
     criminal liability,

                    (iii) the aggregate amount of the Taxes that are to be
     contested exceeds Twenty-Five Thousand Dollars ($25,000),

                    (iv) such Tax Indemnitee shall have received a written
     confirmation of the Borrower that the Taxes that are the subject of such
     Tax Claim are Tax for which the Borrower is liable pursuant to Section
     2.13, provided that the Borrower shall not be bound by such confirmation to
     the extent that the final determination of the contest articulates
     conclusions of law and fact that clearly demonstrate that the

                                       40

<PAGE>

     Taxes that are the subject of such Tax Claim are not Taxes for which the
     Borrower is liable pursuant to Section 2.13,

                    (v) the Borrower, upon the written request of such Tax
     Indemnitee, shall have provided such Tax Indemnitee, at the expense of the
     Borrower, with an opinion of counsel selected by such Tax Indemnitee and
     reasonably acceptable to the Borrower to the effect that there is a
     substantial basis in law and fact to contest such Tax Claim and a realistic
     expectation that a contest of such Tax Claim would be successful,

                    (vi) if such Tax Indemnitee decides to contest such Tax
     Claim by paying the Taxes that are the subject of such Tax Claim and taking
     action to obtain a refund thereof, the Borrower shall have made an
     interest-free advance to such Tax Indemnitee in an amount equal to the
     amount of those Taxes and shall have delivered to such Tax Indemnitee a
     written undertaking to indemnify such Tax Indemnitee and its Affiliates on
     an after-tax basis for any adverse Tax consequences (taking into account
     all relevant Tax benefits and Tax detriments) to such Tax Indemnitee or any
     of its Affiliates resulting from such interest-free advance, and

                    (vii) the Borrower shall be paying, on demand and on an
     after-tax basis, all reasonable costs and expenses incurred by such Tax
     Indemnitee or the Loan Agent with the conduct of such contest (including,
     without limitation, reasonable attorneys' and accountants' fees and
     disbursements).

               (k) Subject to Section 9.2(c)(2), a Participant will be entitled
     to the benefits and subject to the requirements of this Section 2.13 to the
     same extent as if such Person were a Lender.

          SECTION 2.14 PRO RATA TREATMENT AND PAYMENTS. Each Borrowing by either
Borrower from the Lenders hereunder, and each payment by either Borrower on
account of any reduction of the Commitments of the Lenders shall be made pro
rata according to the respective Commitments of the relevant Lenders. Each
payment (including each prepayment) by either Borrower on account of principal
of and interest on or other amounts in respect of the Loans shall be made pro
rata according to the respective outstanding principal amounts of the Loans then
held by the Lenders (except as otherwise provided in Section 2.10, 2.11, 2.13 or
9.4).

                                   ARTICLE III

                    CONDITIONS TO CLOSING AND FUTURE FUNDINGS

          SECTION 3.1 CONDITIONS PRECEDENT. The effectiveness of this Agreement
and the several obligations of the Lenders to make the Loans requested to be
made on each Funding Date are subject to the satisfaction or waiver of all of
the following conditions precedent on or before such Funding Date:

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<PAGE>

               (a) Certain Documents. On or before the first Funding Date, the
     Loan Agent and the Initial Lender shall have received each of the
     following, each dated appropriately:

                    (i) this Agreement, duly executed and delivered by the
     parties hereto;

                    (ii) the Notes duly executed by the Borrowers and conforming
     to the requirements set forth in Section 2.4(d) hereof;

                    (iii)the documents described in clauses (i), (ii), and (iii)
     of the definition of "Collateral Documents", duly executed and delivered by
     the parties thereto;

                    (iv) the favorable opinions of (A) Skadden, Arps, Slate,
     Meagher & Flom LLP and Vedder, Price, Kaufman & Kammholz, P.C., counsel to
     America West, (B) Arnold & Porter, counsel to US Airways and the Guarantor,
     (C) General Counsel of America West in form and substance satisfactory to
     the Loan Agent and each Lender and (D) General Counsel of US Airways and
     the Guarantor;

                    (v) a copy of the articles or certificate of incorporation
     of each of the Borrowers and the Guarantor, certified as of a recent date
     by the Secretary of State of the state of organization of such Person,
     together with a "long-form" certificate of such official attesting to the
     good standing of such Person;

                    (vi) a certificate of each of the Borrowers and the
     Guarantor signed on behalf of such Person by its Secretary or an Assistant
     Secretary certifying (A) the names and true signatures of each officer of
     such Person who has been authorized to execute and deliver each Loan
     Document required to be executed and delivered by or on behalf of such
     Person hereunder or thereunder, (B) the by-laws of such Person as in effect
     on the date of such certification, (C) the resolutions of such Person's
     board of directors approving and authorizing the execution, delivery and
     performance of each Loan Document to which it is a party and (D) that there
     have been no changes in the certificate of incorporation of such Person
     from the certificate of incorporation delivered pursuant to the immediately
     preceding clause;

                    (vii) a certificate of each of the Borrowers and the
     Guarantor, signed by its duly authorized officer, certifying (i) that all
     representations and warranties of such Person contained in Article IV
     hereof are true and correct in all material respects on and as of the
     Closing Date, before and after giving effect to any Borrowing to be made on
     such date and to the application of the proceeds therefrom, and (ii) that
     no Default or Event of Default has occurred and is continuing, or would
     result

                                       42

<PAGE>

     from any Borrowing to be made on such date and the application of the
     proceeds therefrom; and

                    (viii) a copy of the ATSB Loan Agreements and of each
     counter-guarantee or guarantee delivered thereunder, all in form and
     substance satisfactory to the Loan Agent and each Lender.

               (b) No Material Adverse Change. On each Funding Date, since the
     Effective Date, there shall have been no Material Adverse Change.

               (c) Amendments; New Aircraft Transaction. Before the first
     Funding Date:

                    (i) the relevant security agreements for the Cross-Default
     Obligations shall have been amended in a manner reasonably satisfactory to
     the Loan Agent to provide for cross-collateralization to the Obligations;

                    (ii) the America West ATSB loan documents shall have been
     amended in a manner reasonably satisfactory to the Loan Agent to provide
     for the release of any prepayment obligation thereunder to the extent
     conflicting with any mandatory prepayment obligation of the Borrowers under
     Section 2.6;

                    (iii) an intercreditor agreement (and any necessary
     amendments to the GECC loan and security agreements) consistent with the
     MOU and otherwise reasonably satisfactory to the Loan Agent shall have been
     entered into with GECC with respect to spare parts and any other Collateral
     held in common with GECC (and any necessary amendments to the GECC loan and
     security agreements);

                    (iv) each of the A319/A320/A321 Purchase Agreement and the
     A330/A340 Purchase Agreement shall have been amended as contemplated in the
     MOU and the other transactions provided for therein shall have been
     consummated as set forth therein and Guarantor shall have obtained
     Bankruptcy Court approval to assume by Final Order, and shall have assumed,
     the A319/A330/A321 Purchase Agreement and the A330/A340 Purchase Agreement,
     each, as so amended; all of the foregoing to the reasonable satisfaction of
     the Loan Agent;

                    (v) definitive documentation with respect to the new
     aircraft transaction for twenty (20) A350 aircraft shall have been entered
     into by all relevant parties, as contemplated in paragraph 4 of the MOU;

                    (vi) with respect to the Pass-Through Trust Certificates,
     Series 2001-1 transactions, all aircraft leases and other assumable
     agreements included therein or comprising such transactions

                                       43

<PAGE>

     shall have been assumed following Bankruptcy Court approval by Final Order,
     all to the satisfaction of the Loan Agent;

                    (vii) the Co-Branded Card and Merchant Services Agreement,
     dated May 20, 2003, as amended, between US Airways and Bank of America,
     shall have been assumed following Bankruptcy Court approval by Final Order;

                    (viii) all other assumable contracts of US Airways or its
     Affiliates which are Debtors with Airbus or its Affiliates shall have been
     assumed with Bankruptcy Court Approval by Final Order; and

                    (ix) on the first Funding Date, the Loan Agent and the
     Initial Lender shall have received a certificate of US Airways and the
     Guarantor signed by its duly authorized officer as to the assumptions of
     contracts referred to in the preceding clauses (iv), (vi), (vii) and
     (viii).

               (d) Expenses Paid. On each Funding Date, the Obligors shall have
     paid all legal fees and expenses of the Loan Agent, the Initial Lender and
     the Collateral Agent due and payable on or before such Funding Date if the
     Borrowers are responsible therefor under Section 9.3 and have received
     reasonably detailed invoices therefor promptly following the relevant
     Notice of Borrowing.

               (e) Consents, Etc. On each Funding Date, the Borrowers and the
     Guarantor shall have received all consents and authorizations required to
     be received by them to be able to execute, deliver and perform, in all
     material respects, their obligations under the Loan Documents to which any
     of them is, or shall be, a party.

               (f) No Illegality. On each Funding Date, no law or regulation
     shall be applicable that restrains, prevents or imposes materially adverse
     conditions upon the transactions contemplated hereby.

               (g) Representations and Warranties of Obligors. On each Funding
     Date, all representations and warranties of each Borrower and of the
     Guarantor set forth in Article IV hereof shall be true and correct in all
     material respects on and as of such Funding Date, both before and after
     giving effect to any Borrowing to be made on such date and to the
     application of the proceeds therefrom as though made on and as of such date
     (except to the extent such representations and warranties by their terms
     expressly relate to an earlier date, in which case such representations and
     warranties shall have been true and correct in all material respects on and
     as of such earlier date).

               (h) No Event of Default. On each Funding Date, no Event of
     Default or Default shall have occurred and be continuing, or would result
     from the Borrowing to be made on such date and the application of the
     proceeds therefrom.

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<PAGE>

               (i) Corporate and Other Proceedings. On the first Funding Date,
     all corporate and other proceedings, and all documents, instruments and
     other legal matters in connection with the transactions contemplated hereby
     shall be satisfactory in form and substance to the Loan Agent.

               (j) Chief Executive Officer. On the first Funding Date, W.
     Douglas Parker shall be the Chief Executive Officer of the Guarantor.

               (k) Additional Investments. On the first Funding Date, Guarantor
     shall have received one or more unrestricted equity investments in an
     aggregate amount equal to not less than $375 million and a cash payment of
     not less than $125 million from one or more sources in addition to the
     liquidity amounts described in the Business Plan.

               (l) Effective Date. On or before the first Funding Date, the
     Effective Date shall have occurred.

               (m) Pro Forma Balance Sheet; Financial Statements. On the first
     Funding Date, the Lenders shall have received (i) the Pro Forma Balance
     Sheet and (ii) the financial statements referred to in Section 4.3(b).

               (n) Lien Searches. On each Funding Date, the Loan Agent shall
     have received, if it desires, the results of a recent UCC lien search in
     each appropriate jurisdiction and FAA liens search, and in each case, such
     search shall reveal (1) no Liens other than those listed in Section 5.13 or
     otherwise permitted by Section 5.13 and (2) no Liens on any material
     portion of the Collateral except in respect of Liens permitted on the
     Collateral by Section 5.13 and not otherwise prohibited under the
     Collateral Documents.

               (o) Filings, Registrations and Recordings. On each Funding Date,
     each document (including any Uniform Commercial Code financing statement)
     required by the Collateral Documents or under law or reasonably requested
     by the Loan Agent to be filed, registered or recorded in order to create in
     favor of the Loan Agent, for the benefit of the Lenders, a perfected Lien
     on the Collateral described therein, prior and superior in right to any
     other Person (other than with respect to Liens expressly permitted by
     Section 5.13), shall have been delivered to the Loan Agent in proper form
     for filing, registration or recordation.

               (p) Plan of Reorganization; Confirmation Order; Effective Date of
     Merger. On the first Funding Date, the Confirmation Order confirming the
     Plan of Reorganization (i) shall have been provided to the Loan Agent and
     (ii) shall be in full force and effect and shall not have been reversed or
     modified and shall not be stayed or subject to a motion to stay, and the
     Confirmation Order shall have become a Final Order. The Plan Effective Date
     and the Effective Time (as defined in the Merger Agreement) shall have
     occurred. On the First Funding Date, the Loan Agent and the Initial Lender
     shall have received a certificate of each of the Borrowers and the
     Guarantor, signed by its duly authorized officer, certifying to the effect
     of the

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<PAGE>

     preceding sentence and clause (ii) of the second preceding sentence. All
     claims arising under or with respect to the A321 Airbus Financings and all
     claims arising under or with respect to the Pass-Through Trust
     Certificates, Series 2001-1 transactions shall have been allowed under the
     Plan and shall be unimpaired and reinstated thereunder, in form and
     substance reasonably acceptable to the Loan Agent.

               (q) Concerning the Collateral.

                    (i) On each Funding Date, Collateral Agent shall have
     received (or shall hold from prior closings) a broker's report and current
     insurance certificate confirming the insurance coverages on the Collateral
     which are required by the terms of the Collateral Documents.

                    (ii) On the first Funding Date, Borrower shall have obtained
     from each Person with any interest in the real property and/or the
     improvements thereon at each Designated Location (whether as fee owner,
     landlord, tenant, ground lessor, mortgagee, leasehold mortgagee,
     beneficiary of deed of trust, beneficiary of leasehold deed of trust or
     otherwise), a waiver of any and all right or interest that such Person may
     otherwise have in the Pledged Spare Parts and such Person's consent, if
     applicable, to access by the Collateral Agent, and/or any Lender or any
     representative of any of them to the premises in connection with the
     exercise of any rights or remedies under or pursuant to the Spare Parts
     Mortgage and Security Agreement (in each case, in form and substance
     satisfactory to the Collateral Agent).

               (r) Concerning the ATSB Loan Agreements. On or before the First
     Funding Date, the warrant for the purchase of 386,925 shares of common
     stock of the Guarantor shall have been delivered to AFS Cayman Limited.

                                   ARTICLE IV

                         REPRESENTATIONS AND WARRANTIES

          To induce the Loan Agent and the Lenders to enter into this Agreement,
each of the Obligors jointly and severally represents and warrants to the Loan
Agent and the Lenders, on and as of the Closing Date and on and as of each date
as required by Section 3.1, as provided below in Sections 4.1 through 4.13,
that:

          SECTION 4.1 ORGANIZATION, POWERS, QUALIFICATION; AIR CARRIER LICENSES,
FRANCHISES AND PERMITS.

               (a) Each Obligor is a corporation duly organized, validly
     existing and in good standing under the laws of the State of Delaware. As
     of the Closing Date, each Borrower is Wholly-Owned by the Guarantor. Each
     Obligor has all requisite corporate power and authority (i) to carry on its
     business as now conducted, and (ii) to enter into the Loan Documents to
     which it is a party and to carry out the transactions contemplated hereby
     and thereby.

                                       46

<PAGE>

               (b) Each Obligor is qualified to do business and in good standing
     in every jurisdiction where its assets are located and wherever necessary
     to carry out its business and operations, except in jurisdictions where the
     failure to be so qualified or in good standing could reasonably be expected
     to result in a Material Adverse Effect.

               (c) Each Borrower is an "air carrier" within the meaning of Title
     49 and holds a certificate under Sections 41102 of Title 49.

               (d) Each of the Borrower and any other Obligor engaged in
     operations as an "air carrier" is a "citizen of the United States" within
     the meaning of Section 40102(a)(15) of Title 49, as interpreted by the
     United States Department of Transportation (a "United States Citizen") and
     holds an air carrier operating certificate issued pursuant to Chapter 447
     of Title 49 for aircraft capable of carrying 10 or more individuals or
     6,000 pounds or more of cargo. Each Obligor possesses all necessary
     certificates, franchises, licenses, permits, rights and concessions and
     consents which are material to the conduct of its business and operations
     as currently conducted (including in the case of each Obligor engaged in
     operations as an "air carrier", the operation of the routes flown by it), a
     true and complete list of which are set forth on Schedule 4.1(b) to the
     ATSB Loan Agreements.

               (e) The Borrowers possess all necessary franchises, licenses, and
     permits necessary to authorize the Borrowers to lawfully engage in air
     transportation and to carry on scheduled commercial passenger service as
     currently conducted, except where the failure to so hold any such
     franchise, license, or permit could not reasonably be expected to have a
     Material Adverse Effect.

          SECTION 4.2 AUTHORIZATION OF BORROWING, ETC.

               (a) Each Obligor has duly authorized by all necessary corporate
     action the execution, delivery and performance of the Loan Documents to
     which it is a party. The execution, delivery and performance by each
     Obligor of the Loan Documents to which it is a party and the consummation
     of the transactions contemplated by the Loan Documents to which it is a
     party do not and will not (i) (A) violate any provision of any law or any
     governmental rule or regulation or order applicable to or binding on such
     Obligor, (B) violate any provision of the Certificate or Articles of
     Incorporation or Bylaws of such Obligor, (C) conflict with, result in a
     breach of or constitute (with due notice or lapse of time or both) a
     default under any Contractual Obligation of such Obligor or any of its
     Subsidiaries except to the extent of any such violation, conflict, breach,
     default, or imposition of Lien (of which no Obligor has Actual Knowledge)
     which could not reasonably be expected to have a Material Adverse Effect,
     or (D) result in or require the creation or imposition of any Lien on any
     of the Collateral (except as permitted in the applicable Collateral
     Document) or on any other property (except as permitted under Section 5.13
     hereof), or (ii) require any approval of stockholders or any approval or
     consent of any Person under any Contractual Obligation of such Obligor or
     any of its Subsidiaries, except for such approvals or consents which will
     have been obtained on or before the

                                       47

<PAGE>

     Closing Date, except for any such approval or consent under a Contractual
     Obligation and the failure to obtain which could not reasonably be expected
     to result in a Material Adverse Effect.

               (b) The execution, delivery and performance by each Obligor of
     the Loan Documents to which it is a party and the consummation of the
     transactions contemplated by the Loan Documents to which it is a party and
     the use of the proceeds of the Loans do not and will not require any
     registration with, consent or approval of, or notice to, or other action
     to, with or by, any federal, state or other Governmental Authority or
     regulatory body or any other Person which is required to be obtained or
     made on or prior to the Closing Date and which has not previously been
     obtained or made.

               (c) Each Obligor has duly executed and delivered each of the Loan
     Documents to which it is party and each such Loan Document is the legally
     valid and binding obligation of such Obligor, enforceable against such
     Obligor in accordance with its respective terms, except as may be limited
     by bankruptcy, insolvency, reorganization, moratorium, fraudulent transfer
     or other similar laws relating to or affecting the enforcement of
     creditors' rights generally, including materiality, reasonableness, good
     faith and fair dealing, and by general principles of equity (regardless of
     whether considered in a proceeding in equity or at law).

               (d) No part of the proceeds of the Loans will be used, directly
     or indirectly, for any purpose that entails a violation of Regulations U or
     X of the Federal Reserve Board.

          SECTION 4.3 FINANCIAL CONDITION. Each Obligor has heretofore delivered
to the Lenders the following financial statements and information:

               (a) The unaudited pro forma consolidated balance sheet of the
     Guarantor and its consolidated Subsidiaries for the Fiscal Years 2005
     through 2008 (including the notes thereto) (the "Pro Forma Balance Sheet"),
     which has been prepared giving effect (as if such events had occurred on
     such date) to (i) the occurrence of the Effective Time (as defined in the
     Merger Agreement), (ii) the Loans to be made on the Closing Date and the
     use of proceeds thereof and (iii) the payment of fees and expenses in
     connection with the foregoing. The Pro Forma Balance Sheet was prepared in
     good faith based upon assumptions believed to be reasonable at the time
     made, assuming that the events specified in the preceding sentence had
     actually occurred at such date.

               (b) (i) The audited consolidated balance sheets of US Airways and
     Guarantor as at December 31, 2004 and the related consolidated statements
     of income, stockholders' equity and cash flows of US Airways and Guarantor
     for the Fiscal Year then ended, (ii) the unaudited consolidated balance
     sheets of US Airways and Guarantor as at June 30, 2005 and the related
     unaudited consolidated statements of income, stockholders' equity and cash
     flows of US Airways and Guarantor for the six months then ended, and (iii)
     audited consolidated

                                       48

<PAGE>

     balance sheets of AWA Holdings and America West as at December 31, 2004,
     and the related consolidated statements of income, stockholders' equity and
     cash flows of AWA Holdings and America West for the Fiscal Year then ended,
     and (iv) the unaudited consolidated balance sheets of AWA Holdings and
     America West as at June 30, 2005 and the related unaudited consolidated
     statements of income, stockholders' equity and cash flows of AWA Holdings
     and America West for the six months then ended. All such consolidated
     statements were prepared in conformity with GAAP and fairly present the
     consolidated financial position of the applicable Obligor as at the
     respective dates thereof and the consolidated results of operations and
     cash flows of such Obligor for each of the periods then ended subject, in
     the case of the unaudited consolidated statements, to year-end audit and
     adjustments. Except as disclosed in writing to the Loan Agent prior to the
     date of this Agreement, neither Obligor has any contingent liability or
     liability for taxes, long-term lease or unusual forward or long-term
     commitment (A) that is not reflected in the foregoing consolidated
     financial statements (or, in the case of the Borrowers, in the most
     recently delivered consolidated financial statements delivered pursuant to
     Section 5.1) or the notes thereto and (B) which in any such case would
     result in a Material Adverse Effect.

               (c) After giving effect to the Consummation of the Plan, (i) the
     Obligors taken as a whole are or were Solvent on the First Funding Date
     after giving effect to the Borrowings on such date, and (ii) no Obligor has
     any material liability, including reasonably likely contingent liability or
     liability for taxes, long-term lease or any unusual forward or long-term
     commitment of a type required to be reflected in financial statements
     prepared in conformity with GAAP, that is not taken into account in the
     preparation of the annual report on Form 10-K for the fiscal year ended
     December 31, 2004 of such Reporting Obligor.

          SECTION 4.4 NO MATERIAL ADVERSE EFFECT. Since the Effective Date there
has not been a Material Adverse Change.

          SECTION 4.5 TITLE TO PROPERTIES; LIENS. Each Obligor and its
Subsidiaries have (i) good, sufficient and legal title to (in the case of fee
interests in real property), (ii) valid leasehold interests in (in the case of
leasehold interests in real or personal property), or (iii) good title to (in
the case of all other personal property), all of the properties and assets
reflected in the financial statements referred to in Section 4.3 or, in the most
recent financial statements delivered pursuant to Section 5.1, in each case
except for assets disposed of since the date of such financial statements in the
ordinary course of business or as otherwise permitted under Section 6.5. Except
as otherwise permitted by this Agreement, all such properties and assets are
free and clear of Liens.

          SECTION 4.6 LITIGATION; ADVERSE FACTS. Except as set forth in either
Borrowers' or Guarantors Annual Reports on Form 10-K for 2004, as amended
through the Closing Date, or in any Quarterly Report on Form 10-Q or Current
Report on Form 8-K filed by such Borrower or Guarantor with the SEC subsequent
to such Form 10-K (in each case, as amended through the Closing Date) and except
as disclosed in other publicly available filings of either of the Borrowers or
the Guarantor with the SEC

                                       49

<PAGE>

or as disclosed in any publicly available filing with the Bankruptcy Court in
the Cases, there are no actions, suits, proceedings, arbitrations or
governmental investigations (whether or not purportedly on behalf of any Obligor
or any of its Subsidiaries) at law or in equity or before or by any federal,
state, municipal or other governmental department, commission, board, bureau,
agency or instrumentality, domestic or foreign, pending or, to the knowledge of
the Obligors, threatened against any Obligor or any of its Subsidiaries or any
property of any Obligor or any of its Subsidiaries that, if adversely
determined, would have a Material Adverse Effect or seeks to restrain or enjoin
any Obligor from entering into or performing under any Loan Document.

          SECTION 4.7 TAX RETURNS. Each Obligor and each of their respective
Subsidiaries have timely filed all Federal income tax returns and all other
material tax returns that are required to be filed by them (or extensions have
been obtained with respect thereto) and have paid all material Taxes shown to be
due pursuant to such returns or pursuant to any assessment received by such
Person, other than (i) any such assessment being contested in good faith through
appropriate proceedings and with respect to which an adequate reserve has been
established by the Obligors or their Subsidiaries to the extent required by GAAP
and (ii) that the Debtors' obligations to pay taxes that relate to a tax period
(or portion thereof) ending on or before the commencement of the Cases and which
first became due and payable after the time of the commencement of the Cases,
have been stayed or enjoined pursuant to the Plan of Reorganization, the
Confirmation Order or the Bankruptcy Code, it being understood that the
exception in clause (ii) above does not affect the Debtors' representation that
they have made adequate provision for such Taxes.

          SECTION 4.8 NO DEFAULT OR EVENT OF DEFAULT. No Default or Event of
Default has occurred and is continuing.

          SECTION 4.9 GOVERNMENTAL REGULATION. None of the Obligors is (i) an
"investment company" as defined in, or subject to regulation under, the
Investment Company Act of 1940, or (ii) a "holding company" as defined in, or
subject to regulation under, the Public Utility Holding Company Act of 1935.

          SECTION 4.10 EMPLOYEE BENEFIT PLANS. Within the last 6 years, each
Plan maintained, contributed to, or required to be contributed to by the
Borrowers or an ERISA Affiliate is in compliance with all applicable laws,
except to the extent failure to so comply could not be reasonably expected,
individually or in the aggregate, to have a Material Adverse Effect. Neither the
Borrowers nor any ERISA Affiliate have incurred any liability under Title IV of
ERISA within the last 6 years which remains unsatisfied nor, to the best of
their knowledge, do the Borrowers reasonably expect to incur any liability under
Title IV of ERISA, which in either event, could reasonably be expected,
individually or in the aggregate, to have a Material Adverse Effect.

          SECTION 4.11 COMPLIANCE WITH LAWS. Each Obligor and each of its
Subsidiaries is in compliance with all laws, statutes, rules, regulations and
orders binding on or applicable to such Obligor, its Subsidiaries and all of
their respective properties,

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<PAGE>

except to the extent failure to so comply could not reasonably be expected to
have a Material Adverse Effect.

          SECTION 4.12 SECURITY DOCUMENTS. Each of the Borrowers has good title
to the Collateral free and clear of Liens other than Liens permitted by Section
5.13 and not prohibited by the applicable Collateral Document. No Person holds
any right or interest in any of the Pledged Spare Parts under the Spare Parts
Security Agreement by virtue of any interest that such person may have in real
property or improvements at any of the Designated Locations (as defined
therein). The Collateral Documents are effective to create in favor of the
Collateral Agent, for the benefit of the Lenders, a legal, valid and enforceable
security interest in the Collateral described therein and proceeds thereof. When
appropriate financing statements, filings and recordings with the FAA, and other
filings and recordings specified on Schedule 4.12, in appropriate form are filed
in the offices specified on Schedule 4.12, the Collateral Documents shall
constitute a fully perfected Lien on, and security interest in, all right, title
and interest of the Borrowers in such Collateral and the proceeds thereof, as
security for the Obligations and the Cross-Default Obligations, in each case
prior and superior in right to any other Person (except Liens permitted by
Section 5.13 and not prohibited by the applicable Collateral Document, none of
which are of record except for the Liens of the Senior Mortgages).

          SECTION 4.13 CONCERNING THE COLLATERAL.

               (a) Section 1110. The Collateral Agent is entitled to the
     benefits of Section 1110 of the Bankruptcy Code with respect to the
     Specified Engines as provided in the Engine Mortgage and Security Agreement
     and to not less than the Minimum 1110 Percentage (determined on the basis
     of Appraisal Value as of the Closing Date) of the Rotables included within
     the Pledged Spare Parts as provided in the Spare Parts Security Agreement
     in the event of a case under Chapter 11 of the Bankruptcy Code in which a
     Borrower is a debtor. Defined terms in this paragraph not otherwise defined
     herein shall have the respective meanings specified in the Spare Parts
     Security Agreement.

               (b) Condition. All Pledged Spare Parts are in the condition and
     state of repair required under the FAA-approved maintenance program of the
     applicable Borrower relating to such Pledged Spare Parts, and no
     appliances, parts, interests, appurtenances, accessories or other equipment
     of whatever nature which are incorporated or installed in or attached to
     such Pledged Spare Parts are leased by the Borrower. Each Pledged Engine is
     in the condition and state of repair required under the FAA-approved
     maintenance program of Borrower relating to such Engine, and no appliances,
     parts, interests, appurtenances, accessories or other equipment of whatever
     nature which are incorporated or installed in or attached to any Pledged
     Engine are leased by the Borrower.

               (c) Location, Identification and Release of Pledged Spare Parts.
     All of the Pledged Spare Parts are or will (upon becoming subject to the
     Lien of the Mortgage) be maintained by or on behalf of the Borrower at the
     Designated

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<PAGE>

     Locations, subject to Section 3.02 of the Spare Parts Mortgage and Security
     Agreement.

               (d) Software. (i) Each Borrower owns the Software currently used
     by such Borrower to track the location, use and maintenance status of its
     spare parts, including the source code and user interfaces associated
     therewith, free and clear of any Liens other than Liens permitted under the
     Spare Parts Security Agreement, (ii) such Borrower pays no license fees in
     respect of such Software to any Person, (iii) no approval or consent by any
     Person is required in respect of such Borrower's right to use such Software
     or in order to recognize or give effect to the rights granted in the Spare
     Parts Mortgage and Security Agreement by the Borrower to the Collateral
     Agent in respect of such Software in the Spare Parts Mortgage and Security
     Agreement, and (iv) no Person has any contractual right, whether contingent
     or otherwise, to terminate such Borrower's right to use such Software.

               (e) Records. America West shall maintain its records with respect
     to Pledged Spare Parts at Sky Harbor Airport in Phoenix, Arizona, or at an
     applicable Designated Location.

               (f) Spare Parts. It is the intention of the parties to this
     Agreement that all Pledged Spare Parts be "spare parts" as defined in
     Section 40102(a)(38) of Title 49 of the United States Code. Each Borrower
     represents that it maintains the Pledged Spare Parts for the purpose of
     installing the Spare Parts on aircraft, aircraft engines or appliances as
     defined in Sections 40102(a)(6), (7) and (11) of the United States Code.

               (g) No Event of Loss. To the Borrowers' knowledge, on the First
     Funding Date, no Event of Loss has occurred with respect to any Pledged
     Engine, or A321 Aircraft subject to an A321 Airbus Financing, and no
     circumstance, condition, act or event has then occurred that, with the
     giving of notice or lapse of time or both gives rise to or constitutes an
     Event of Loss with respect to any Pledged Engine, unless arrangements
     satisfactory to the Loan Agent have been made for the Loan Agent to
     receive, out of Net Insurance Proceeds or otherwise, the prepayment
     envisioned under Section 3.04(a) of the Engine Mortgage and Security
     Agreement for Pledged Engines which have suffered an Event of Loss. On each
     subsequent Funding Date, No Event of Loss has occurred with respect to any
     Pledged Engine, or A321 Aircraft subject to an A321 Airbus Financing, with
     respect to which any Obligor or any of its Subsidiaries has not complied in
     all material respects with its applicable obligations under the Collateral
     Documents and the documents related to the A321 Airbus Financings; and no
     circumstance, condition, act or event has occurred that, with the giving of
     notice or lapse of time or both gives rise to or constitutes an Event of
     Loss with respect to any Pledged Engine, of which the Loan Agent has not
     been notified by the Borrowers.

               (h) Outstanding Amount. The outstanding principal amount of
     Indebtedness secured by the Senior Mortgages is $110,563,891 ($75,563,891
     for the Senior Spare Parts Mortgage and $35,000,000 for the Senior Engine
     Mortgage).

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          SECTION 4.14 REPRESENTATIONS AND WARRANTIES OF THE COLLATERAL AGENT.
The Collateral Agent represents and warrants to the other parties hereto, in its
individual capacity, on and as of the Closing Date and on each date as required
by Section 3.1, that:

               (a) Powers and Authorizations. It is a national banking
     association duly organized and validly existing in good standing under the
     laws of the United States and has full power and authority, in its
     individual capacity, to execute and deliver this Agreement and the
     Collateral Documents to which it is a party and (assuming the due
     authorization, execution and delivery of this Agreement by the other
     parties hereto) perform its obligations thereunder. The execution, delivery
     and performance by the Collateral Agent of the Loan Documents to which it
     is or will be a party have been duly authorized by all necessary action on
     its part and do not contravene the Charter or By-laws of the Collateral
     Agent; and the Loan Documents to which the Collateral Agent is or will be a
     party have been duly authorized, executed and delivered by the Collateral
     Agent and constitute the legal, valid and binding obligations, enforceable
     against it in accordance with its terms. This Agreement and the other Loan
     Documents to which the Collateral Agent is or will be a party, upon the due
     execution and delivery hereof, will constitute the legal, valid and binding
     obligations of the Collateral Agent in its individual capacity, and the
     performance by the Collateral Agent (in its individual or trust capacity,
     as the case may be) of any of its obligations hereunder and thereunder does
     not contravene any federal law or regulation or contractual restriction
     binding on or governing the banking or trust powers of the Collateral Agent
     (in its individual or trust capacity, as the case may be);

               (b) Litigation. There are no pending (or, to the Collateral
     Agent's knowledge, threatened) actions, suits, investigations or
     proceedings against or affecting it before any court, arbitrator, or
     administrative or governmental body which, individually or in the
     aggregate, if decided adversely to the interests of the Collateral Agent
     would materially and adversely affect the ability of the Collateral Agent,
     either in its individual capacity or as Collateral Agent, as the case may
     be, to perform its obligations under this Agreement or any other Loan
     Document or which questions or would affect the legality or validity of
     this Agreement or such Loan Document;

               (c) No Legal Bar. Neither the execution and delivery by the
     Collateral Agent of this Agreement or any other Loan Document nor the
     consummation by the Collateral Agent of any of the transactions
     contemplated hereby or thereby requires or will require the consent or
     approval of or the giving of notice to, the registration with, or the
     taking of any other action in respect of, any federal governmental
     authority or agency governing its banking or trust powers.

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                                    ARTICLE V

                                    COVENANTS

          To induce the other parties to enter into this Agreement, each of the
Obligors jointly and severally agrees with the Loan Agent and each Lender that,
as long as any of the Obligations remain outstanding:

          SECTION 5.1 FINANCIAL STATEMENTS AND OTHER INFORMATION. The Obligors
will maintain, and cause each of their respective Subsidiaries to maintain, a
system of accounting established and administered in accordance with sound
business practices to permit preparation of financial statements in conformity
with GAAP. The Obligors will deliver to the Loan Agent:

               (a) Financial Statements.

                    (i) Quarterly Financials: within 60 days after the end of
     each fiscal quarter of each Fiscal Year (other than the last quarter of
     each Fiscal Year), (a) the unaudited consolidated balance sheets of each of
     the Obligors as at the end of such fiscal quarter and the related
     consolidated statements of income and stockholders' equity of each such
     company for such fiscal quarter and consolidated cash flows of each such
     company for the period from the beginning of then current Fiscal Year to
     the end of such fiscal quarter, all such financial statements to be in the
     form prepared for the management of the Borrowers and certified by the
     chief financial officer, controller or treasurer of such company being
     fairly stated in all material respects (subject to normal year-end audit
     adjustments); provided that delivery of such company's Form 10-Q for such
     fiscal quarter shall be deemed to satisfy all of the requirements of this
     Section 5.1(a)(i) and in lieu of actual delivery of such Form 10-Q, the
     Borrowers may notify the Loan Agent that such report has been filed with
     the SEC and that such report is publicly available; and

                    (ii) Year-End Financials: within 105 days after the end of
     each Fiscal Year, (a) the consolidated balance sheets of each of the
     Obligors at the end of such Fiscal Year and the related consolidated
     statements of income, stockholders' equity and cash flows of such company
     for such Fiscal Year, setting forth in each case in comparative form the
     corresponding figures for the previous Fiscal Year, all in reasonable
     detail, and (b) an accountant's report thereon of KPMG LLP or other
     independent certified public accountants of recognized national standing
     selected by such company, which report shall state that such consolidated
     financial statements fairly present the consolidated financial position of
     such company as at the dates indicated and the results of their operations
     and their cash flows for the periods indicated in conformity with GAAP
     applied on a basis consistent with prior years and that the examination by
     such accountants in connection with such consolidated financial statements
     has

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<PAGE>

     been made in accordance with generally accepted auditing standards;
     provided that delivery of such company's Form 10-K for such Fiscal Year
     shall be deemed to satisfy all of the requirements of this Section
     5.1(a)(ii) and in lieu of actual delivery of such Form 10-K, the Borrowers
     may notify the Loan Agent that such report has been filed with the SEC and
     that such report is publicly available.

               (b) Officer's Certificate: together with each delivery of
financial statements of the Obligors pursuant to Section 5.1(a) (or SEC reports
in lieu thereof), an Officer's Certificate of each of the Obligors stating
whether the signer has Actual Knowledge of the existence as at the date of such
Officer's Certificate of any Event of Default or Default, and, if so, specifying
the nature and period of existence thereof and what action the Obligors have
taken, are taking and proposes to take with respect thereto; and

               (c) Certain Notices. The Obligors will:

                    (i) promptly notify the Loan Agent, the Collateral Agent and
     each Lender, upon a Responsible Officer of any Obligor obtaining Actual
     Knowledge of the occurrence of an event of loss or damage to any equipment
     owned or operated by either Borrower that is reasonably expected to result
     in receipt of insurance proceeds to be received by a Borrower which are
     expected to result in a prepayment under Section 2.6;

                    (ii) prior to either Borrower consummating any Asset Sale
     expected to result in a prepayment under Section 2.6; and

                    (iii) promptly notify the Loan Agent of any proposed
     amendment, waiver or consent with respect to an ATSB Loan Agreement or the
     GECC spare parts financing facility of either Borrower, with details of any
     such amendment, waiver or consent.

               (d) Plan Audits and Liabilities: promptly after (A) an Obligor or
any ERISA Affiliate contacts the IRS or the PBGC for the purpose of
participating in a closing agreement or any voluntary resolution program with
respect to a Plan or Multiemployer Plan which could reasonably be expected to
have a Material Adverse Effect, or (B) a Responsible Officer knows or has reason
to know that any event with respect to any Plan or Multiemployer Plan occurred
that could reasonably be expected to have a Material Adverse Effect, notice of
such contact or the occurrence of such event;

               (e) Funding Changes and New Plan Benefits: promptly after the
change, a notification of any increases in the benefits, or change in funding
method, with respect to which an Obligor may have any liability, under any Plan
or Multiemployer Plan or the establishment of any material new Plan or
Multiemployer Plan with respect to which an Obligor may have any liability or
the commencement of contributions to any Plan or Multiemployer Plan to which an
Obligor or any ERISA Affiliate was not

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<PAGE>

previously contributing, except to the extent that such an event could not
reasonably be expected to have a Material Adverse Effect;

               (f) Claims and Proceedings: promptly after receipt of written
notice of commencement thereof, notification of all (A) claims made by
participants or beneficiaries with respect to any Plan and (B) actions, suits
and proceedings before any court or governmental department, commission, board,
bureau, agency or instrumentality, domestic or foreign, affecting an Obligor or
any ERISA Affiliate with respect to any Plan, except those which, in the
aggregate, if adversely determined, could not reasonably be expected to have a
Material Adverse Effect;

               (g) ERISA Event: promptly after the occurrence of any ERISA Event
(A) that could reasonably be expected to have a Material Adverse Effect or (B)
that relates to the occurrence or existence of an event or condition that could
reasonably be expected to have a Material Adverse Effect, notice of such ERISA
Event; and

               (h) Other Information: promptly following request therefor, such
other nonconfidential information regarding the Collateral or the operations,
business affairs, and financial condition of any Obligor, or compliance with the
terms of the Loan Documents, as the Loan Agent or any Lender shall reasonably
request.

          SECTION 5.2 CORPORATE EXISTENCE. Except as permitted under Section
5.8, each of the Obligors will do or cause to be done all things necessary to
preserve and keep in full force and effect its corporate existence and the
corporate, partnership or other existence of each Subsidiary of each Obligor and
the material rights (charter and statutory) and franchises of any of them;
provided, that, subject to Section 5.14, neither the Guarantor nor either
Borrower shall be required to preserve any such corporate, partnership or other
existence of any Subsidiary or any such right or franchise, if the chief
executive officer or the board of directors of the Guarantor shall determine in
the exercise of its business judgment that the preservation thereof is no longer
desirable in the conduct of the business of the Obligors and their respective
Subsidiaries taken as a whole.

          SECTION 5.3 PAYMENT OF TAXES. The Guarantor and the Borrowers will,
and will cause its Subsidiaries to, pay or discharge or cause to be paid or
discharged, before the same shall become delinquent, all taxes, assessments and
governmental charges levied or imposed upon the Guarantor, either Borrower or
any Subsidiary or upon the income profits or property of the Guarantor, either
Borrower or any Subsidiary; provided, however, that the Guarantor and each
Borrower shall not be required to pay or discharge or cause to be paid or
discharged any such tax, assessment or governmental charge the amount,
applicability or validity of which is being contested in good faith by
appropriate proceedings and with respect to which an adequate reserve has been
established by the Guarantor or the Borrowers to the extent required by GAAP.

          SECTION 5.4 MAINTENANCE OF PROPERTIES; INSURANCE. The Guarantor and
the Borrowers will, and will cause each of its Subsidiaries to, maintain all
properties used or useful in the conduct of its business in good condition,
repair and

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<PAGE>

working order and supply such properties with all necessary equipment and make
all necessary repairs, renewals, replacements, betterments and improvements
thereto, all as in the judgment of the Guarantor and the Borrowers may be
necessary so that the business carried on in connection therewith may be
properly and advantageously conducted at all times; provided, however, that
nothing in this Section shall prevent the Guarantor, either Borrower or any
Subsidiary from discontinuing the operation and maintenance of any such
properties if such discontinuance is, in the good faith judgment of the
Guarantor, the Borrowers or such Subsidiary, as the case may be, desirable in
the conduct of its respective business and shall not impair the ability of the
Guarantor or either Borrower to perform their payment or other material
obligations under the Loan Documents. The Guarantor and each Borrower will
insure and keep insured, and will cause each of its Subsidiaries to insure and
keep insured, with reputable insurance companies, such of their respective
properties, to such an extent and against such risks, and will maintain
liability insurance, to the extent (i) that property of a similar character is
usually so insured by companies engaged in a similar business and owning similar
properties in accordance with good business practice and (ii) with respect to
the Collateral or Cross Collateral, required by any of the Collateral Documents
or those relevant to a Cross-Default Obligation, respectively.

          SECTION 5.5 INSPECTION. The Guarantor and each Borrower will, and will
cause its Subsidiaries to, permit any authorized representatives designated by
the Loan Agent to discuss its and their affairs, finances and accounts with its
and their officers upon reasonable notice and at such reasonable times during
normal business hours and as often as may be reasonably requested; provided that
such access to officers shall not be disruptive to the Guarantor or either
Borrower's business, as reasonably determined by the Guarantor and the
Borrowers.

          SECTION 5.6 COMPLIANCE WITH LAWS, ETC. Each Obligor will, and will
cause each of its Subsidiaries to, comply with all applicable statutes, rules,
regulations, orders and restrictions of the United States of America, all states
and municipalities thereof, and of any governmental department, commission,
board, regulatory authority, bureau, agency and instrumentality of the
foregoing, in respect of the conduct of their respective businesses and the
ownership of their respective properties, except such as are being contested in
good faith by appropriate proceedings and except for such noncompliance as could
not reasonably be expected to result in a Material Adverse Effect.

          SECTION 5.7 FURTHER ASSURANCES. At any time or from time to time
following the request of the Loan Agent, the Obligors will, at their expense,
promptly execute, acknowledge and deliver such further documents and do such
other acts and things as the Loan Agent may reasonably request in order to
effect fully the purposes of the Loan Documents. From the date on which the Cape
Town Convention becomes effective, each of the Obligors, at no cost to the
Lenders, shall enter into such documentation, as reasonably requested by the
Loan Agent and is necessary (i) to establish "international interest(s)" under
the Cape Town Convention, (ii) to enhance the enforceability of the agreements
of the parties established under the Loan Documents under the Cape Town
Convention and shall take, any and all steps as reasonably

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requested by the Loan Agent and necessary to register such interest(s) in the
International Registry relating thereto.

          SECTION 5.8 EMPLOYEE BENEFIT PLANS. Each Obligor will ensure that the
Plans and Multiemployer Plans with respect to which the Obligors may have any
liability are operated in compliance with all applicable laws, except to the
extent that the failure to do so could not reasonably be expected to have a
Material Adverse Effect.

          SECTION 5.9 FAA MATTERS; CITIZENSHIP. Each Borrower will at all times
hereunder be an "air carrier" within the meaning of Title 49 and hold a
certificate under 49 U.S.C. Section 41102(a)(1) as currently in effect or as
amended or recodified from time to time. Each Borrower will at all times
hereunder hold an air carrier operating certificate issued pursuant to Chapter
447 of Title 49 for aircraft capable of carrying 10 or more individuals or 6,000
pounds or more of cargo.

          SECTION 5.10 DELIVERY OF POST-RECORDING FAA OPINION. Promptly upon the
recording of the Spare Parts Mortgage and Security Agreement and the Engine
Security Agreement with the FAA, the Borrowers will cause Daugherty, Fowler,
Peregrin & Haught, FAA counsel in Oklahoma City, Oklahoma, to deliver to the
Loan Agent and the Borrowers a favorable opinion addressed to each of them as to
such recordation and the lack of filing of any intervening documents creating a
Lien with respect to the Collateral.

          SECTION 5.11 SOFTWARE. Each Borrower will maintain a spare parts
inventory tracking system at all times prior to payment in full of the
Obligations.

          SECTION 5.12 COMPLIANCE WITH MORTGAGE. The Borrowers will comply with
the terms and provisions of the Collateral Documents.

          SECTION 5.13 PROHIBITION ON LIENS. Neither Borrower shall, nor shall
it permit any of its Subsidiaries (other than Airways Assurance Limited LLC or
FTCHP LLC) to, directly or indirectly create, incur, assume or permit to exist
any Lien on or with respect to any property or asset of any kind (including any
document or instrument in respect of goods or accounts receivable) of any
Borrower or any of its Subsidiaries (other than Airways Assurance Limited LLC or
FTCHP LLC), whether now owned or hereafter acquired, or any income or profits
therefrom, or file or consent to the filing of any financing statement or other
similar notice of any Lien with respect to any such property, asset, income or
profits under the UCC of any state or under any similar recording or notice
statute, except:

               (a) Permitted Encumbrances;

               (b) (A) Liens existing on the Closing Date on Aircraft Related
     Equipment securing Indebtedness used to acquire such Aircraft Related
     Equipment, (B) Liens on Aircraft Related Equipment acquired after the
     Effective Date created or incurred in connection with the financing of such
     Aircraft Related Equipment, (C) Liens on Aircraft Related Equipment and
     related property created or incurred in connection with debt financings of
     such Aircraft Related Equipment, as

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<PAGE>

     contemplated under the A350/A330 Financing Letter Agreement (or any
     financing pursuant thereto), the Senior Mortgages, the GE 2001 Credit
     Agreement (as defined in the ATSB Loan Agreements), and the GECC RJ
     Agreement (as defined in the ATSB Loan Agreements), (D) leases and/or
     subleases of Aircraft Related Equipment to any Obligor or any Subsidiary of
     an Obligor or any US Airways Express affiliate that is not an Obligor (or a
     Subsidiary of an Obligor) and operates such Aircraft Related Equipment for
     an Obligor or a Subsidiary of an Obligor pursuant to a services agreement
     with such Obligor or Subsidiary, which lease or sublease is entered into in
     connection with the debt financing or leasing of such Aircraft Related
     Equipment, as applicable, and the assignment of any such lease or sublease
     and the proceeds thereof, in the case of a lease, to any Person owed
     Indebtedness used to acquire such Aircraft Related Equipment or, in the
     case of a sublease, to any Person leasing such Aircraft Related Equipment
     to such Obligor or Subsidiary, (E) Liens on Aircraft Related Equipment
     securing Permitted Refinancing Indebtedness in respect of Indebtedness
     previously secured by such Aircraft Related Equipment in accordance with
     subclause (A) or (B) above, including in each case, Liens securing special
     facility revenue bonds that finance Aircraft Related Facilities, (F) Liens
     incurred or deposits made in the ordinary course of business to secure the
     performance of contracts for the purchase of aircraft, (G) Liens in
     existence on the Closing Date (1) on aircraft and engines (other than
     Pledged Engines) and (2) securing special facility revenue bonds, and (H)
     Liens on an Obligor's interest as lessee or sublessor in respect of any
     Aircraft Related Equipment or interests related thereto (including without
     limitation subleases, refunds or rebates, security deposits, supplemental
     rent, reserves, or return condition adjustment payments);

               (c) other Liens on assets acquired after the Closing Date
     securing or relating to Indebtedness and other liabilities and obligations
     in each case not otherwise prohibited under this Agreement in an aggregate
     amount not to exceed $5,000,000 at any time outstanding;

               (d) Liens described in Schedule 5.13, except to the extent such
     Liens cover any of the Collateral;

               (e) judgment and attachment Liens not giving rise to an Event of
     Default;

               (f) Liens on the assets of any entity or on any asset existing at
     the time such entity or asset is acquired by an Obligor or a Subsidiary of
     an Obligor, whether by merger, consolidation, purchase of assets or
     otherwise; provided that such Liens (A) are not created, incurred or
     assumed by such entity in contemplation of or in connection with the
     financing of such entity's being acquired by an Obligor or a Subsidiary of
     an Obligor, (B) were created to secure the financing of Aircraft Related
     Equipment or other specific assets, (C) do not extend to any other assets
     of any Obligor or Subsidiary of an Obligor other than the assets acquired
     with such financing and (D) the Indebtedness secured by such Lien is
     permitted pursuant to this Agreement;

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<PAGE>

               (g) leases or subleases of real or personal property granted by
     any Obligor or Subsidiary of an Obligor to other Persons not interfering in
     any material respect with the ordinary conduct of the business of the
     Obligors or their Subsidiaries, taken as a whole;

               (h) Liens on cash and Cash Equivalents securing (A) reimbursement
     obligations in respect of letters of credit issued for the account of any
     Obligor or Subsidiary of an Obligor in the ordinary course of business and
     consistent with past practice, so long as the aggregate amount of such cash
     and Cash Equivalents does not exceed 115% of the maximum available amount
     under the secured letters of credit, and (B) reimbursement or other margin
     requirements in connection with, in the case of Liens contemplated in this
     clause (B), (1) transactions designed to hedge against fluctuations in fuel
     costs, entered into in the ordinary course of business, consistent with
     past business practice or then current industry practice, and not entered
     into for speculative purposes, (2) transactions designed to hedge interest
     rates entered into with respect to notional amounts not to exceed actual or
     anticipated Indebtedness and not entered into for speculative purposes and
     (3) transactions designed to hedge against risks associated with
     fluctuations in currencies entered into in the ordinary course of business,
     and (C) prepaid fuel and healthcare expenses in the ordinary course of
     business and consistent with past practice;

               (i) Liens securing the obligations of the Obligors with respect
     to or relating to the Indebtedness as provided for in the ATSB Loan
     Agreements;

               (j) Liens on assets pledged in connection with a Replacement
     Secured Financing permitted under the ATSB Loan Agreements;

               (k) Liens on assets pledged to secure a Permitted Acquisition
     Financing; provided that the Liens attach only to assets acquired in
     connection with the acquisition financed by such Permitted Acquisition
     Financing;

               (l) any renewal or substitution of any Lien for any of the
     preceding clauses (b), (d) or (f); provided that any such Liens are not
     extended to additional assets; and

               (m) any renewal or substitution or (in the case of Clause (i))
     amendment of any Lien for any of the preceding clauses (b), (d), (f), (h),
     (i), (j) or (k), provided that (i) the Indebtedness secured is not
     increased beyond the outstanding amount of such Indebtedness on the Closing
     Date, if such Indebtedness was outstanding on the Closing Date and (ii) any
     such Lien securing any such Indebtedness outstanding on the Closing Date
     are not extended to assets in addition to those subject to such Lien on the
     Closing Date, or required on the Closing Date under the security agreement
     for such Lien to be subject thereto thereafter, to such Lien;

provided that the Obligors will not create, incur, assume or permit to exist any
Lien permitted under any of clauses (b) through (e) above on any property of an
Obligor

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already constituting Collateral, other than pursuant to the Senior Mortgages and
the Aircraft Mortgages.

          SECTION 5.14 MERGER OR CONSOLIDATION. No Obligor shall consolidate
with or into or merge with or into, or enter into another form of corporate
combination with or into, any Person, or, in one or a series of transactions,
convey, lease or transfer all or substantially all its properties and assets to
any Person, unless: (i) either (A) such Obligor, or, if the transaction involves
more than one Obligor, an Obligor, is the surviving entity, or (B) an Obligor is
not the surviving entity and such surviving entity or the Person that acquires
by conveyance, lease or transfer all or substantially all the properties and
assets of an Obligor, shall be a corporation organized and existing under the
laws of the United States of America or any State or the District of Columbia,
and shall expressly assume, by an agreement executed and delivered to the Loan
Agent, in form and substance reasonably satisfactory to the Loan Agent, all of
such Obligor's obligations under the Loan Documents; (ii) immediately before and
after giving effect to such transaction, no Event of Default or Default shall
have occurred and be continuing; and (iii) the Obligors have delivered to the
Loan Agent an Officer's Certificate and an opinion of counsel from counsel
satisfactory to the Loan Agent, in form and substance satisfactory to the Loan
Agent, stating that such transaction and such agreement comply with this Section
and that all conditions precedent herein provided for relating to such
transaction have been complied with and addressing such other matters as may be
reasonably requested by the Loan Agent; provided, however, that no such
transaction or merger, consolidation, corporate combination, conveyance, lease
or transfer shall involve a manufacturer of aircraft or airframes, or an
Affiliate thereof, other than Airbus.

          SECTION 5.15 CERTAIN APPROVALS UNDER THE ATSB LOAN AGREEMENT. Neither
Borrower will give its approval or consent to a sale of any right, obligation or
interest under an ATSB Loan Agreement, or any note or loan document referred to
therein (i) pursuant to clause (c) of the last sentence of Section 9.2(a)
thereof, or (ii) involving Tranche B-1.

                                   ARTICLE VI

                                EVENTS OF DEFAULT

          SECTION 6.1 EVENTS OF DEFAULT. Each of the following events shall be
an Event of Default:

               (a) Failure by the Borrowers to pay any installment of principal
     of the Loans when due, or in the case of interest, within five Business
     Days after the date due, whether at stated maturity, by acceleration, by
     mandatory prepayment or otherwise; or (ii) failure by the Borrowers to pay
     any other amount due under this Agreement or any other Loan Document within
     ten Business Days after the

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     receipt by the Borrowers of written notice from the Loan Agent that such
     payment is due or overdue; or

               (b) Any representation or warranty by any Obligor in any Loan
     Document or in any statement or certificate at any time given by either
     Obligor in writing pursuant hereto or thereto or in connection herewith or
     therewith shall be false in any material respect on the date as of which
     made, such false representation or warranty is material at the time in
     question, and, if curable, the same shall remain uncured for a period in
     excess of 30 days (or in the case of any representation or warranty as to
     the existence of a Default, 60 days) after the date of written notice
     thereof from the Loan Agent to the Borrowers; or

               (c) Failure by any Obligor to perform or comply in any material
     respect with any term or condition contained in Sections 2.4(f), 5.2 and
     5.9 of this Agreement; or

               (d) Failure by any Obligor to perform or comply in any material
     respect with any term contained in this Agreement or any of the other Loan
     Documents (other than any such term referred to in any other subsection of
     this Section 6.1), such failure to comply is material at the time in
     question, and such failure to comply shall not have been remedied or waived
     within 30 days after receipt by the Borrowers of notice from the Loan Agent
     of such failure to comply; provided that if such failure to comply is
     capable of being corrected and the Borrowers are diligently proceeding to
     correct such failure, then there shall be no Event of Default under this
     clause (c) unless such failure to comply shall not have been remedied or
     waived within 90 days after receipt by the Borrowers of such notice; or

               (e) (i) With respect to any Cross-Default Obligation identified
     in clause (i) of the definition therein, any of the Obligors shall default
     (after the expiration of any applicable grace period) under or in the
     performance of any material term, provision or condition contained in any
     agreement under which any such Cross-Default Obligation was created or is
     governed; or (ii) with respect to any Cross-Default Obligation identified
     in clause (ii) of the definition thereof, any material "event of default"
     (however described) shall occur and be continuing (after the expiration of
     any applicable grace period), and shall not thereafter have been waived,
     remedied or cured, under any agreement (as amended or modified from time to
     time) under which any such Cross-Default Obligation was created or is
     governed; provided, however, that this Section 6.1(e) shall cease to be of
     any further force and effect if at any time prior to payment in full of the
     Obligations, Airbus or its Affiliates cease to hold at least 51% of the
     outstanding principal amount of the Loans.

               (f) (i) A court shall enter a decree or order for relief in
     respect of any Obligor or any of its Subsidiaries in an involuntary case
     under the Bankruptcy Code or under any other applicable bankruptcy,
     insolvency or similar law now or hereafter in effect; or any other similar
     relief shall be granted under any applicable federal or state law; or (ii)
     an involuntary case shall be commenced against any Obligor or any of its
     Subsidiaries under the Bankruptcy Code or under any other

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     applicable bankruptcy, insolvency or similar law now or hereafter in
     effect; or a decree or order of a court for the appointment of a receiver,
     liquidator, sequestrator, trustee, custodian or other officer having
     similar powers over any Obligor or any of its Subsidiaries, or over all or
     a substantial part of its property, shall have been entered; or there shall
     have occurred the involuntary appointment of an interim receiver, trustee
     or other custodian of any Obligor or any of its Subsidiaries for all or a
     substantial part of its property; or a warrant of attachment, execution or
     similar process shall have been issued against any substantial part of the
     property of any Obligor or any of its Subsidiaries, and any such event
     described in clause (i) above or this clause (ii) shall continue for 90
     days unless dismissed, bonded or discharged; or

               (g) (i) Any Obligor or any of its Subsidiaries shall have an
     order for relief entered with respect to it or commence a voluntary case
     under the Bankruptcy Code or under any other applicable bankruptcy,
     insolvency or similar law now or hereafter in effect, or shall consent to
     the entry of an order for relief in an involuntary case, or to the
     conversion of an involuntary case to a voluntary case, under any such law,
     or shall consent to the appointment of or taking possession by a receiver,
     trustee or other custodian of all or a substantial part of its property; or
     any Obligor or any of its Subsidiaries shall make any assignment for the
     benefit of creditors; or (ii) any Obligor or any of its Subsidiaries shall
     be unable, or shall fail generally, or shall admit in writing its
     inability, to pay its debts as such debts become due; or the board of
     directors of any Obligor or any of its Subsidiaries (or any committee
     thereof) shall adopt any resolution or otherwise authorize any action to
     approve any of the actions referred to in clause (i) above or this clause
     (ii); or

               (h) Any order, judgment or decree shall be entered against any
     Obligor decreeing the dissolution or split up of such Obligor and such
     order shall remain undischarged or unstayed for a period in excess of 60
     days; or

               (i) Any of the Collateral Documents shall cease, for any reason,
     other than discharge of the Lien thereof in accordance with its terms, to
     be in full force and effect, or any Borrower or any Affiliate of any
     Borrower shall so assert, or any Lien created by any of the Collateral
     Documents shall cease, for any reason other than discharge of the Lien
     thereof in accordance with its terms, to be in full force and effect, to be
     enforceable and of the same effect and priority purported to be created
     thereby; or

               (j) Any Borrower shall cease to carry and maintain, or cause to
     be carried and maintained, insurance on and in respect of the Collateral in
     accordance with the requirements of any applicable Collateral Document.

          SECTION 6.2 REMEDIES. During the continuance of any Event of Default,
the Loan Agent shall, solely at the request of the Requisite Lenders, by notice
to the Borrowers declare that the Loans, all interest accrued thereon and all
other amounts and Obligations payable under this Agreement and the Loan
Documents to be immediately due and payable, whereupon the Loans, all such
interest and all such amounts and Obligations shall become and be immediately
due and payable, and/or

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<PAGE>

declare the Commitments to be terminated, whereupon the Commitment of each
Lender shall be terminated, all without presentment, demand, protest or further
notice of any kind, all of which are hereby expressly waived by the Borrowers;
provided, however, that upon the occurrence of the Event of Default specified in
Section 6.1(f) or 6.1(g), the Loans, all such interest and all such amounts and
Obligations shall automatically become and be immediately due and payable, and
the Commitments shall terminate, all without presentment, demand, protest or any
notice of any kind, all of which are hereby expressly waived by the Obligors.

                                   ARTICLE VII

                     THE LOAN AGENT AND THE COLLATERAL AGENT

          The parties hereto agree as follows:

          SECTION 7.1 AUTHORIZATION AND ACTION. Each Lender hereby appoints and
authorizes each of the Loan Agent and the Collateral Agent to take such action
as administrative agent and collateral agent, respectively, on its behalf and to
exercise such powers under this Agreement and the other Loan Documents as are
delegated by such Lender to it as Loan Agent or Collateral Agent by the terms
hereof and thereof, together with such powers as are reasonably incidental
thereto, and each of the Loan Agent and the Collateral Agent hereby accepts such
authorization and appointment. As to any matters not expressly provided for by
this Agreement and the other Loan Documents or provided for with specific
reference to this Section 7.1 (including, without limitation, enforcement or
collection of any Note), neither the Loan Agent nor the Collateral Agent shall
be required to exercise any discretion or take any action, but shall be required
to act or to refrain from acting (and shall be fully protected in so acting or
refraining from action) upon the instructions of the Requisite Lenders and such
instructions shall be binding upon all Lenders; provided, however, that neither
the Loan Agent nor the Collateral Agent shall be required to take any action
which exposes either the Loan Agent or the Collateral Agent to liability or
which is contrary to this Agreement, any other Loan Document or applicable law.
As to any provisions of this Agreement under which action may be taken or
approval given by the Requisite Lenders, the action taken or approval given by
the Requisite Lenders, shall be binding upon all Lenders to the same extent and
with the same effect as if each Lender had joined therein. Each of the Loan
Agent and the Collateral Agent shall be entitled to rely upon any note, notice,
consent, certificate, affidavit, letter, telegram, teletype message, facsimile
transmission, statement, order or other document believed by it to be genuine
and correct and to have been signed or sent by the proper person or persons and,
in respect of legal matters, upon the opinion of counsel selected by the Loan
Agent or the Collateral Agent. Each of the Loan Agent and the Collateral Agent
may deem and treat the payee of the Notes as the owner thereof for all purposes
hereof unless and until a written notice of the assignment or transfer thereof
shall have been filed with the Loan Agent. Any request, authority or consent of
any Person who at the time of making such request or giving such authority or
consent is the holder of any Note shall be conclusive and binding on any
subsequent holder, transferee or assignee of such Note. The Lenders agree and
acknowledge that the Collateral Agent, in addition to being appointed by and
acting on behalf of the Lenders

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<PAGE>

hereto, is also (as of the date hereof) being appointed by and acting on behalf
of the lenders party to the Other Loan Agreement. Therefore, the Collateral
Agent is an agent of and is acting for and on behalf of all of the Lenders party
hereto and, in addition, all of the lenders party to the Other Loan Agreement.

          SECTION 7.2 AGENT'S RELIANCE, ETC. Neither the Loan Agent nor the
Collateral Agent nor any of their respective Affiliates, directors, officers,
agents or employees shall be liable to any Lender for any action taken or
omitted to be taken by it or by such directors, officers, agents or employees
under or in connection with this Agreement, the Notes or any other Loan
Document, except for its or their own gross negligence or willful misconduct.
Without limitation of the generality of the foregoing, each of the Loan Agent
and the Collateral Agent: (i) may consult with legal counsel, independent public
accountants and other experts selected by it and shall not be liable to any
Lender for any action taken or omitted to be taken in good faith by it in
accordance with the advice of such experts; (ii) makes no warranty or
representation to any Lender and shall not be responsible to any Lender for any
statements, warranties or representations (whether oral or written) made in or
in connection with this Agreement, the Notes or any other Loan Document; (iii)
shall not have any duty to ascertain or to inquire as to the performance or
observance of any of the terms, covenants or conditions of this Agreement, the
Notes or any other Loan Document on the part of Guarantor or the Borrowers or to
inspect the property (including the books and records) of Guarantor, the
Borrowers or any of their respective Subsidiaries; (iv) shall not be responsible
to any Lender for the due execution, legality, validity, enforceability,
genuineness, sufficiency or value of this Agreement, the Notes or any other Loan
Document, or any other instrument or document furnished pursuant thereto; (v)
shall incur no liability under or in respect to this Agreement, the Notes or any
other Loan Document by acting upon any notice, consent, certificate or other
instrument or writing (which may be by telegram, facsimile transmission, cable
or telex) believed by it to be genuine and signed or sent by the proper party or
parties; and (vi) may deem and treat each Lender which makes a loan hereunder as
the holder of the indebtedness resulting therefrom for all purposes hereof until
the Loan Agent receives and accepts an Assignment and Assumption entered into by
such Lender, as assignor, and an eligible assignee as provided in Section 9.2
hereof.

          SECTION 7.3 AGENT AND AFFILIATES. If and so long as the Loan Agent or
the Collateral Agent shall remain a Lender, the Loan Agent or the Collateral
Agent, as applicable, shall have the same rights and powers under this Agreement
as any other Lender and may exercise the same rights and powers under this
Agreement as any other Lender and may exercise the same as though it were not
the Loan Agent or the Collateral Agent; and the term "Lender" or "Lenders"
shall, unless otherwise expressly indicated, include the Loan Agent and the
Collateral Agent, each in its individual capacity. Unrelated to its role as Loan
Agent or Collateral Agent as set forth herein, the Loan Agent and the Collateral
Agent and their respective Affiliates may accept deposits from, lend money to,
act as trustee under indentures of, and generally engage in any kind of business
with, the Borrowers, Guarantor, any of their respective Subsidiaries and any
Person who may do business with or own securities of the Borrowers, Guarantor,
or any of their respective Subsidiaries, all as if it were not the Loan Agent or
the Collateral Agent, as applicable, hereunder and without any duty to account
therefor to the Lenders.

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          SECTION 7.4 REPRESENTATIONS OF THE LENDERS. Each Lender has actively
engaged in the negotiation of all of the terms of this Agreement. Each of the
Loan Agent and the Collateral Agent has no duty or responsibility, either
initially or on a continuing basis, to provide any Lender with any credit or
other information with respect to the Borrowers whether coming into its
possession as of the date of this Agreement or at any time thereafter, or to
notify any Lender of any Event of Default except as provided in Section 7.5
hereof. This Agreement and all instruments or documents delivered in connection
with this Agreement have been reviewed and approved by each Lender and none of
the Lenders have relied on the Loan Agent or the Collateral Agent as to any
legal or factual matter in connection therewith or in connection with the
transactions contemplated thereunder.

          SECTION 7.5 EVENTS OF DEFAULT. In the event of the occurrence of any
Default or Event of Default, any Lender knowing of such event may (but shall
have no duty to) give the Loan Agent and the Collateral Agent written notice
specifying such Event of Default or other event and expressly stating that such
notice is a "notice of default". Neither the Loan Agent nor the Collateral Agent
shall be deemed to have knowledge of such events unless the Loan Agent or the
Collateral Agent, as applicable, has received such notice, or unless the Event
of Default consists of a failure of payment of principal or interest on the
Note. In the event that the Loan Agent or the Collateral Agent receives such a
notice of the occurrence of an Event of Default, the Loan Agent or the
Collateral Agent, as applicable, shall give written notice thereof to the
Lenders. The Loan Agent and the Collateral Agent shall take such action with
respect to such Default or Event of Default as shall be reasonably directed in
writing by the Requisite Lenders, provided, however, that, unless and until the
Loan Agent or the Collateral Agent shall have received such direction, the Loan
Agent and the Collateral Agent may (but shall not be obligated to) take such
action, or refrain from taking such action, with respect to such Event of
Default as it shall deem advisable and in the best interest of the Lenders.

          SECTION 7.6 LOAN AGENT'S AND COLLATERAL AGENT'S RIGHT TO INDEMNITY.
Except for action expressly required of the Loan Agent or the Collateral Agent
hereunder without instructions from any Person, the Loan Agent and the
Collateral Agent shall be fully justified in failing or refusing to take any
action hereunder on behalf of any Lender unless it shall first be indemnified to
its satisfaction by such Lender against any and all liability and expense which
may be incurred by it by reason of taking or continuing to take any such action.

          SECTION 7.7 INDEMNIFICATION OF LOAN AGENT AND COLLATERAL AGENT. The
Lenders hereby agree to indemnify the Loan Agent and the Collateral Agent and
all of their respective affiliates, directors, officers, employees, advisors and
representatives thereof (to the extent not reimbursed by the Borrowers), ratably
as most recently in effect prior to the date indemnification is sought, from and
against any and all costs, losses, liabilities, claims, damages or expenses
which may be incurred by or asserted or awarded against the Loan Agent or the
Collateral Agent in any way relating to or arising out of this Agreement and/or
the other Loan Documents or any action taken or omitted by the Loan Agent or the
Collateral Agent under this Agreement and/or the other Loan Documents; provided,
however, that no Lender shall be liable for any portion of such

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liabilities, obligations, losses, damages, penalties, actions, judgments, suits,
costs, expenses or disbursements resulting from the Loan Agent's or the
Collateral Agent's gross negligence or willful misconduct. Without limiting the
foregoing, each Lender agrees to reimburse the Loan Agent and the Collateral
Agent promptly upon demand for its ratable share of any out-of-pocket expenses
(including counsel fees) incurred by the Loan Agent or the Collateral Agent in
connection with the administration, or enforcement of, or the preservation of
any rights under, this Agreement and/or the other Loan Documents, to the extent
that the Loan Agent or the Collateral Agent is not reimbursed for such expenses
by the Borrowers.

          SECTION 7.8 SUCCESSOR LOAN AGENT AND COLLATERAL AGENT. Each of the
Loan Agent and the Collateral Agent may with the consent (not to be unreasonably
withheld) of the Lenders and, if no Event of Default has occurred and is
continuing, the Borrowers (or, if an Event of Default has occurred and is
continuing and if legally permissible, upon notice to the Borrowers), resign at
any time by giving written notice thereof to the Lenders and may, at any time,
with or without cause, be removed by the Requisite Lenders acting through the
Loan Agent with, if no Event of Default has occurred and is continuing and if
the Collateral Agent is not in default of any Obligation under the Loan
Documents and if no representation or warranty of the Collateral Agent under the
Loan Documents has proven to be incorrect in any material respect, the consent
(not to be unreasonably withheld) of the Borrowers (or, if an Event of Default
has occurred and is continuing, upon notice to the Borrowers). Upon any such
resignation or removal, the Borrowers shall have the right to appoint a
successor agent, subject to consent of the Lenders. If no successor agent shall
have accepted such appointment within 30 days after (i) the retiring Loan
Agent's or Collateral Agent's, as applicable, giving of notice of resignation or
(ii) the Loan Agent giving notice, if legally permissible, of such removal, the
Loan Agent or the Collateral Agent, as applicable, may, with the consent (not to
be unreasonably withheld) of the Requisite Lenders and, if no Event of Default
has occurred and is continuing, the Borrowers, appoint a successor Loan Agent or
Collateral Agent, as applicable, who shall be willing to accept such
appointment. Upon the acceptance of any appointment as Loan Agent or Collateral
Agent hereunder by a successor Loan Agent or Collateral Agent, such successor
Loan Agent or Collateral Agent shall thereupon succeed to and become vested with
all the rights, powers, privileges and duties of the retiring or removed Loan
Agent or Collateral Agent, and the retiring or removed Loan Agent or Collateral
Agent shall be discharged from its duties and obligations as agent under this
Agreement. After any Loan Agent's or Collateral Agent's resignation or removal
hereunder as Loan Agent or Collateral Agent, as applicable, the provisions of
this Article 9 shall inure to its benefit as to any actions taken or omitted to
be taken by it while it was Loan Agent or Collateral Agent under this Agreement.

          SECTION 7.9 COLLATERAL AND GUARANTEE MATTERS. The Lenders irrevocably
authorize and direct the Collateral Agent to release any Lien on the Collateral
as provided for in the Collateral Documents.

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                                  ARTICLE VIII

                                    GUARANTEE

          SECTION 8.1 GUARANTEE.

               (a) The Guarantor hereby unconditionally and irrevocably
     guarantees to the Loan Agent, for the ratable benefit of the Lenders and
     their respective successors, indorsees, transferees and assigns, the prompt
     and complete payment and performance by the Borrowers when due (whether at
     the stated maturity, by acceleration or otherwise) of the Obligations.

               (b) Anything herein or in any other Loan Document to the contrary
     notwithstanding, the maximum liability of the Guarantor hereunder and under
     the other Loan Documents shall in no event exceed the amount which can be
     guaranteed by the Guarantor under applicable federal and state laws
     relating to the insolvency of debtors.

               (c) The Guarantor agrees that the Obligations may at any time and
     from time to time exceed the amount of the liability of the Guarantor
     hereunder without impairing the guarantee contained in this Article VIII or
     affecting the rights and remedies of the Loan Agent or any Lender
     hereunder.

               (d) The guarantee contained in this Article VIII shall remain in
     full force and effect until all the Obligations (including contingent
     Obligations contained in any Loan Document that survive the termination
     thereof) shall have been satisfied by payment in full and the Commitments
     shall be terminated.

               (e) No payment made by either Borrower or the Guarantor, any
     other guarantor or any other Person or received or collected by the Loan
     Agent or any Lender from either Borrower, the Guarantor, any other
     guarantor or any other Person by virtue of any action or proceeding or any
     set-off or appropriation or application at any time or from time to time in
     reduction of or in payment of the Obligations shall be deemed to modify,
     reduce, release or otherwise affect the liability of the Guarantor
     hereunder which shall, notwithstanding any such payment (other than any
     payment made by the Guarantor in respect of the Obligations or any payment
     received or collected from such Guarantor in respect of the Obligations),
     remain liable for the Obligations up to the maximum liability of the
     Guarantor hereunder until the Obligations are paid in full and the
     Commitments are terminated.

          SECTION 8.2 NO SUBROGATION. Notwithstanding any payment made by the
Guarantor hereunder or any set-off or application of funds of the Guarantor by
the Loan Agent or any Lender, the Guarantor shall not be entitled to be
subrogated to any of the rights of the Loan Agent or any Lender against either
Borrower or any other guarantor or any collateral security or guarantee or right
of offset held by the Loan Agent, the Collateral Agent or any Lender for the
payment of the Obligations, nor shall the Guarantor seek or be entitled to seek
any contribution or reimbursement from either

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Borrower or any other guarantor in respect of payments made by such guarantor
hereunder, until all amounts owing to the Loan Agent and the Lenders by the
Borrower on account of the Obligations (other than contingent obligations
contained in any Loan Document that survive the termination thereof) are paid in
full and the Commitments are terminated. If any amount shall be paid to the
Guarantor on account of such subrogation rights at any time when all of the
Obligations (other than contingent obligations contained in any Loan Document
that survive the termination thereof) shall not have been paid in full, such
amount shall be held by the Guarantor in trust for the Loan Agent and the
Lenders, segregated from other funds of the Guarantor, and shall, forthwith upon
receipt by the Guarantor, be turned over to the Loan Agent in the exact form
received by the Guarantor (duly indorsed by the Guarantor to the Loan Agent, if
required), to be applied against the Obligations, whether matured or unmatured,
in such order as the Loan Agent may determine.

          SECTION 8.3 AMENDMENTS, ETC. WITH RESPECT TO THE OBLIGATIONS. The
Guarantor shall remain obligated hereunder notwithstanding that, without any
reservation of rights against the Guarantor and without notice to or further
assent by the Guarantor, any demand for payment of any of the Obligations made
by the Loan Agent or any Lender may be rescinded by the Loan Agent or such
Lender and any of the Obligations continued, and the Obligations, or the
liability of any other Person upon or for any part thereof, or any collateral
security or guarantee therefor or right of offset with respect thereto, may,
from time to time, in whole or in part, be renewed, extended, amended, modified,
accelerated, compromised, waived, surrendered or released by the Loan Agent or
any Lender, and the Loan Documents and any other documents executed and
delivered in connection therewith may be amended, modified, supplemented or
terminated, in whole or in part, as the Loan Agent (or the Requisite Lenders or
all Lenders, as the case may be) may deem advisable from time to time, and any
collateral security, guarantee or right of offset at any time held by the Loan
Agent or any Lender for the payment of the Obligations may be sold, exchanged,
waived, surrendered or released. Neither the Loan Agent nor any Lender shall
have any obligation to protect, secure, perfect or insure any Lien at any time
held by it as security for the Obligations or for the guarantee contained in
this Section 8.3 or any property subject thereto.

          SECTION 8.4 GUARANTEE ABSOLUTE AND UNCONDITIONAL. The Guarantor waives
any and all notice of the creation, renewal, extension or accrual of any of the
Obligations and notice of or proof of reliance by the Loan Agent or any Lender
upon the guarantee contained in this Article VIII or acceptance of the guarantee
contained in this Article VIII; the Obligations, and any of them, shall
conclusively be deemed to have been created, contracted or incurred, or renewed,
extended, amended or waived, in reliance upon the guarantee contained in this
Article VIII; and all dealings between the Borrower and the Guarantor, on the
one hand, and the Loan Agent, the Collateral Agent and the Lenders, on the other
hand, likewise shall be conclusively presumed to have been had or consummated in
reliance upon the guarantee contained in this Article VIII. The Guarantor waives
diligence, presentment, protest, demand for payment and notice of default or
nonpayment to or upon the Borrower or the Guarantor with respect to the
Obligations. The Guarantor understands and agrees that the guarantee contained
in this Article VIII shall be construed as a continuing, absolute and

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unconditional guarantee of payment without regard to (a) the validity or
enforceability of any other provisions of this Agreement or any other Loan
Document, any of the Obligations or any other collateral security therefor or
guarantee or right of offset with respect thereto at any time or from time to
time held by the Loan Agent, the Collateral Agent or any Lender, (b) any
defense, set-off or counterclaim (other than a defense of payment or
performance) which may at any time be available to or be asserted by the
Borrower or any other Person against the Loan Agent, the Collateral Agent or any
Lender, or (c) any other circumstance whatsoever (with or without notice to or
knowledge of a Borrower or the Guarantor) which constitutes, or might be
construed to constitute, an equitable or legal discharge of the Borrower for the
Obligations, or of the Guarantor under the guarantee contained in this Article
VIII, in bankruptcy or in any other instance. When making any demand hereunder
or otherwise pursuing its rights and remedies hereunder against the Guarantor,
the Loan Agent, the Collateral Agent or any Lender may, but shall be under no
obligation to, make a similar demand on or otherwise pursue such rights and
remedies as it may have against either Borrower, any other guarantor or any
other Person or against any collateral security or guarantee for the Obligations
or any right of offset with respect thereto, and any failure by the Loan Agent,
the Collateral Agent or any Lender to make any such demand, to pursue such other
rights or remedies or to collect any payments from the Borrower, any other
guarantor or any other Person or to realize upon any such collateral security or
guarantee or to exercise any such right of offset, or any release of the
Borrower, any other guarantor or any other Person or any such collateral
security, guarantee or right of offset, shall not relieve the Guarantor of any
obligation or liability hereunder, and shall not impair or affect the rights and
remedies, whether express, implied or available as a matter of law, of the Loan
Agent, the Collateral Agent or any Lender against the Guarantor. For the
purposes hereof "demand" shall include the commencement and continuance of any
legal proceedings.

          SECTION 8.5 REINSTATEMENT. The guarantee contained in this Article
VIII shall continue to be effective, or be reinstated, as the case may be, if at
any time payment, or any part thereof, of any of the Obligations is rescinded or
must otherwise be restored or returned by the Loan Agent, the Collateral Agent
or any Lender upon the insolvency, bankruptcy, dissolution, liquidation or
reorganization of either Borrower or the Guarantor, or upon or as a result of
the appointment of a receiver, intervenor or conservator of, or trustee or
similar officer for, either Borrower or the Guarantor or any substantial part of
its property, or otherwise, all as though such payments had not been made.

          SECTION 8.6 PAYMENTS. The Guarantor hereby guarantees that payments
hereunder will be paid to the Loan Agent without set-off, counterclaim, claim of
recoupment or other defense in Dollars at the office specified in Section
2.9(a).

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                                   ARTICLE IX

                                  MISCELLANEOUS

          SECTION 9.1 AMENDMENTS, WAIVERS, ETC.

               (a) No amendment, modification or waiver of any provision of this
     Agreement or any other Loan Document nor consent to any departure by any
     Obligor therefrom shall in any event be effective unless the same shall be
     in writing and signed by the Requisite Lenders, and then any such waiver or
     consent shall be effective only in the specific instance and for the
     specific purpose for which given; provided, however, that no amendment,
     modification, waiver or consent shall, unless in writing and signed by each
     Lender, do any of the following:

                    (i) subject the Lenders to any additional obligations;

                    (ii) change the scheduled final maturity of the Loans, or
     change the amount or date for payment of any date fixed for the payment or
     reduction of principal;

                    (iii) change the principal amount of any Loan (other than by
     the payment or prepayment thereof);

                    (iv) change the rate of interest on any Loan or any fee,
     indemnity or other amount payable to any Lender;

                    (v) change any date fixed for payment of such interest,
     indemnity or other amount or fees;

                    (vi) amend the definition of "Requisite Lenders" or this
     Section 9.1(a);

                    (vii) modify the application of payments to the Loan under
     Section 2.9; or

                    (viii) release all or substantially all of the Collateral or
     release the Guarantor from the guarantee contained in Article VIII;

and provided, further, that no amendment, modification, waiver or consent shall,
unless in writing and signed by the Loan Agent in addition to the Persons
required above to take such action, affect the rights or duties of the Loan
Agent under this Agreement or the other Loan Documents.

               (b) The Loan Agent may, but shall have no obligation to, with the
     written concurrence of any Lender, execute amendments, modifications,
     waivers or consents on behalf of that Lender. Any waiver or consent shall
     be effective only in the specific instance and for the specific purpose for
     which it was

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     given. No notice to or demand on the Borrowers in any case shall entitle
     the Borrowers to any other or further notice or demand in similar or other
     circumstances.

               (c) In connection with any proposed amendment, modification,
     waiver or termination (a "Proposed Change") requiring the consent of all
     affected Lenders, if the consent of the Loan Agent and of the Requisite
     Lenders is obtained, but the consent of other Lenders whose consent is
     required is not obtained (any such Lender whose consent is not obtained as
     described in this Section 9.1 being referred to as a "Non-Consenting
     Lender"), then (i) at the Borrowers' request, the Loan Agent shall have the
     right in the Loan Agent's sole discretion (but shall have no obligation) to
     purchase from such Non-Consenting Lender, and such Non-Consenting Lender
     agrees that it shall, upon the Loan Agent's request, sell and assign to the
     Lender that is acting as the Loan Agent, all of the portion of the Loan of
     such Non-Consenting Lender for an amount equal to the principal balance of
     such portion of the Loan held by the Non-Consenting Lender and all accrued
     interest and fees with respect thereto through the date of sale, such
     purchase and sale to be consummated pursuant to an executed Assignment and
     Assumption, and (ii) the Borrowers may effect a substitution of the
     Non-Consenting Lender pursuant to Section 2.12.

          SECTION 9.2 SUCCESSORS AND ASSIGNS; PARTICIPATIONS AND ASSIGNMENTS.

               (a) The provisions of this Agreement shall be binding upon and
     inure to the benefit of the parties hereto and their respective successors
     and assigns permitted hereby, except that (i) the Borrowers may not assign
     or otherwise transfer any of their rights or obligations hereunder without
     the prior written consent of each Lender (and any attempted assignment or
     transfer by the Borrowers without such consent shall be null and void) and
     (ii) no Lender may assign or otherwise transfer its rights or obligations
     hereunder except in accordance with this Section.

               (b) (i) Subject to the conditions set forth in paragraph (b)(ii)
     below, any Lender may assign to one or more entities (each, an "Assignee"),
     including by means of a capital markets, private placement or
     securitization transaction, all or a portion of its rights and obligations
     under this Agreement (including all or a portion of its Commitments and the
     Loans at the time owing to it) and subject to the following additional
     conditions:

                         (A) such Assignee shall not be an airline, a commercial
          aircraft operator, an air freight forwarder, an entity engaged in the
          business of parcel transport by air, other similar Person, or a
          holding company Affiliate of any of the foregoing; and

                         (B) prior written notice of any such assignment shall
          be provided to the Borrowers unless an Event of Default has occurred
          and is continuing;

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                         (C) in the event of an assignment involving a
          widespread syndication or offering, if the Guarantor or any Borrower
          indicates that the proposed transaction would interfere with its own
          debt financing efforts, such Lender agrees to cooperate in good faith
          with the Guarantor or such Borrower in order not to hinder the
          Guarantor's or such Borrower's attempt to finalize its financing; and

                         (D) an assignee or participant that acquires its
          interest in the Obligations pursuant to or in connection with a
          capital markets, private placement, or securitization transaction
          pursuant to which ten or more persons acquire interests in the
          Obligations shall not be entitled to the benefits of Section 2.13.

                    (ii) Assignments shall be subject to the additional
     condition that the parties to each assignment shall execute and deliver to
     the Loan Agent an Assignment and Assumption.

                    (iii) Subject to acceptance and recording thereof pursuant
     to paragraph (b)(iv) below, from and after the effective date specified in
     each Assignment and Assumption the Assignee thereunder shall be a party
     hereto and, to the extent of the interest assigned by such Assignment and
     Assumption, have the rights and obligations of a Lender under this
     Agreement, and the assigning Lender thereunder shall, to the extent of the
     interest assigned by such Assignment and Assumption, be released from its
     obligations under this Agreement (and, in the case of an Assignment and
     Assumption covering all of the assigning Lender's rights and obligations
     under this Agreement, such Lender shall cease to be a party hereto but
     shall continue to be entitled to the benefits of Sections 2.10, 2.11, 2.13,
     9.3 and 9.4). Any assignment or transfer by a Lender of rights or
     obligations under this Agreement that does not comply with this Section
     10.2 shall be treated for purposes of this Agreement as a sale by such
     Lender of a participation in such rights and obligations in accordance with
     paragraph (c) of this Section.

                    (iv) Upon its receipt of a duly completed Assignment and
     Assumption executed by an assigning Lender and an Assignee, the Loan Agent
     shall accept such Assignment and Assumption and record the information
     contained therein in the Register. No assignment shall be effective for
     purposes of this Agreement unless it has been recorded in the Register as
     provided in this paragraph.

                    (v) The Initial Lender agrees to notify the Borrowers
     promptly following the date on which it or its Affiliate has fully

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     or partially assigned or sold all or a portion of its rights and
     obligations under this Agreement.

               (c) (i) Any Lender may, without the consent of the Borrowers or
     the Loan Agent, sell participations to one or more banks or other entities
     (a "Participant") in all or a portion of such Lender's rights and
     obligations under this Agreement (including all or a portion of its
     Commitments and the Loans owing to it); provided that (A) such Participant
     shall not be an airline, a commercial aircraft operator, an air freight
     forwarder, an entity engaged in the business of parcel transport by air,
     other similar Person, or a holding company Affiliate of any of the
     foregoing, (B) such Lender's obligations under this Agreement shall remain
     unchanged, (C) such Lender shall remain solely responsible to the other
     parties hereto for the performance of such obligations and (D) the
     Obligors, the Loan Agent, and the Lenders shall continue to deal solely and
     directly with such Lender in connection with such Lender's rights and
     obligations under this Agreement. Any agreement pursuant to which a Lender
     sells such a participation shall provide that such Lender shall retain the
     sole right to enforce this Agreement. Subject to paragraph (c)(ii) of this
     Section, the Borrowers agree that, if its interest is entered in the
     Register, each Participant shall be entitled to the benefits of Sections
     2.10, 2.11, 2.13, 9.3 and 9.4 to the same extent as if it were a Lender and
     had acquired its interest by assignment pursuant to paragraph (b) of this
     Section. To the extent permitted by law, each Participant also shall be
     entitled to the benefits of Section 9.5 as though it were a Lender,
     provided such Participant shall be subject to Section 9.7 as though it were
     a Lender.

                    (ii) Borrowers shall not be required to provide, and a
     Participant shall not be entitled to receive any greater payment under
     Section 2.10, 2.11 or 2.13 than the Borrowers would have been required to
     pay and the applicable Lender would have been entitled to receive with
     respect to the participation sold to such Participant, unless the sale of
     the participation to such Participant is made with the Borrowers' prior
     written consent. Any Participant shall not be entitled to the benefits of
     Section 2.13 unless such Participant complies with Section 2.13(f).

               (d) Any Lender may at any time pledge or assign a security
     interest in all or any portion of its rights under this Agreement to secure
     obligations of such Lender, including any pledge or assignment to secure
     obligations to a Federal Reserve Bank, and this Section shall not apply to
     any such pledge or assignment of a security interest; provided that no such
     pledge or assignment of a security interest shall release a Lender from any
     of its obligations hereunder or substitute any such pledgee or Assignee for
     such Lender as a party hereto.

               (e) The Obligors agree to cooperate with the efforts of the
     Initial Lender to engage in a transfer or sell-down transaction as
     envisioned in this Section 9.2, including by means of restructuring the
     Loan Documents into tranches (not all of which need to be secured by the
     Collateral), restructuring the Loan Documents into a capital markets style
     indenture, cooperating in reasonable due

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     diligence meetings and investor phone calls, providing accountant comfort
     letters and legal opinion reliance letters, and assisting with the
     reasonable requests of rating agencies and investors, all at the cost of
     the Initial Lender for the reasonable out-of-pocket expenses of Borrower in
     cooperating as provided in this subparagraph. Without limiting the
     generality of the foregoing, as part of the cooperation of the Obligors, if
     requested by the Initial Lender in connection with a transfer or sell down
     transaction as envisioned in this Section 9.2, the Loan Documents shall be
     "marked-to-market" and amended accordingly, solely to reflect any
     prepayment premiums or make-whole amounts or other prepayment terms and
     conditions which are at the time customary for comparable financings in the
     relevant markets, as determined in the opinion of two investment banks, one
     selected by the Borrowers and the other by the Loan Agent, and if such
     banks fail to agree on such prepayment premiums or make-whole amounts or
     other prepayment terms and conditions, then a third investment bank
     mutually selected by the Borrowers and the Loan Agent shall make such
     determination.

          SECTION 9.3 COSTS AND EXPENSES. Whether or not the first Funding Date
occurs, the Obligors agree to pay within ten Business Days (or as provided in
Section 3.1(d)) following receipt of a reasonably detailed invoice therefor (i)
all reasonable out-of-pocket costs and expenses (including reasonable legal fees
and expenses of one primary outside counsel and one special FAA counsel)
incurred by the Initial Lender, the Loan Agent and the Collateral Agent in
connection with the negotiation, preparation, execution and delivery of the Loan
Documents, and all documents relating thereto, (ii) all reasonable out-of-pocket
costs and expenses (including reasonable legal fees and expenses of one primary
outside counsel and one special FAA counsel) incurred by the Loan Agent in
connection with any consents, amendments, waivers or other modifications hereto
or thereto, (iii) all reasonable out-of-pocket costs and expenses incurred by
the Loan Agent in connection with the syndication of the Loans (if any), and
(iv) all reasonable out-of-pocket costs and expenses (including reasonable legal
fees and expenses) incurred by the Loan Agent and the Lenders in enforcing any
Obligations of, or in collecting any payments due from, the Borrowers hereunder
or under the other Loan Documents.

          SECTION 9.4 INDEMNITIES. Whether or not the transactions contemplated
hereby shall be consummated, the Obligors agree to defend, indemnify, pay and
hold harmless the Loan Agent, the Lenders, and their respective Affiliates,
officers, directors, employees, agents and controlling Persons (collectively
called the "Indemnitees") from and against any and all liabilities, obligations,
losses, damages, penalties, actions, judgments, suits, claims, costs, expenses
and disbursements of any kind or nature whatsoever (including without limitation
the reasonable fees and disbursements of outside counsel for such Indemnitees,
but excluding Taxes) that may be imposed on, incurred by, or asserted against
any such Indemnitee, in any manner arising out of this Agreement or the other
Loan Documents or the transactions contemplated hereby or thereby (including,
without limitation, the use or intended use of the proceeds of the Loan) or any
breach or default by the Borrowers of any provision of the Loan Documents
(collectively called the "Indemnified Liabilities"); provided that the Obligors
shall not have any obligation to any Indemnitee hereunder with respect to any

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Indemnified Liabilities to the extent such Indemnified Liabilities (i) arise
from the gross negligence or willful misconduct of an Indemnitee, (ii) are
specifically addressed elsewhere in this Agreement (including, without
limitation, Section 2.10, (iii) arise from breaches by an Indemnitee of any Loan
Document to which it is a party, or (iv) constitute ordinary and usual operating
or overhead expenses of an Indemnitee (excluding, without limitation, costs and
expenses of any outside counsel, consultant or agent). To the extent that the
undertaking to defend, indemnify, pay and hold harmless set forth in the
preceding sentence may be unenforceable because it is violative of any law or
public policy, the Obligors shall contribute the maximum portion that it is
permitted to pay and satisfy under applicable law to the payment and
satisfaction of all Indemnified Liabilities incurred by the Indemnitees or any
of them.

          SECTION 9.5 RIGHT OF SET-OFF. In addition to any rights now or
hereafter granted under applicable law and not by way of limitation of any such
rights, upon the occurrence and during the continuance of any Event of Default,
to the fullest extent permitted by law, each Lender is hereby authorized by the
Obligors at any time or from time to time, without notice to the Obligors or to
any other Person, any such notice being hereby expressly waived, to set off and
to appropriate and to apply any and all deposits (general or special, including,
but not limited to, Indebtedness evidenced by certificates of deposit, whether
matured or unmatured) and any other Indebtedness at any time held or owing by
that Lender to or for the credit or the account of any Obligor against and on
account of the Obligations then due.

          SECTION 9.6 JOINT AND SEVERAL LIABILITY; MAXIMUM LIABILITY; WAIVER OF
SUBROGATION.

               (a) Each Borrower shall be liable for all amounts due to the
     Lenders under this Agreement, regardless of which Borrowers actually
     receives the Loans or other extensions of credit hereunder, or the amount
     of such Loans received or the manner in which any Lender accounts for such
     Loans or other extensions of credit on its books and records. Each
     Borrower's liabilities with respect to Loans and extensions of credit made
     to it, and each Borrower's liabilities arising as a result of the joint and
     several liability of the Borrowers hereunder and under the other Loan
     Documents with respect to Loans or other extensions of credit made to any
     other Borrowers hereunder, shall be separate and distinct obligations, but
     all such liabilities shall be primary obligations of each Borrower. The
     joint and several liability of each Borrower shall in all respects be
     continuing, absolute, unconditional and irrevocable, in all events and
     circumstances, and shall continue in full force and effect until all
     Obligations have been paid in full and all Commitments shall have
     terminated, and will be paid strictly in accordance with the terms of this
     Agreement and each other Loan Document under which they arise, regardless
     of any law, regulation or order now or hereafter in effect in any
     jurisdiction affecting any of such terms or the rights of Lender or any
     holder of any Loan or Note with respect thereto.

               (b) Notwithstanding any payment made by either Borrower or the
     Guarantor hereunder or any set-off or application of funds of either
     Borrower or the Guarantor by the Loan Agent or any Lender, neither Borrower
     shall be entitled

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     to be subrogated to any of the rights of the Loan Agent, the Collateral
     Agent or any Lender against either Borrower or the Guarantor or any
     collateral security or guarantee or right of offset held by the Loan Agent,
     the Collateral Agent or any Lender for the payment of the Obligations, nor
     shall either Borrower seek or be entitled to seek any contribution or
     reimbursement from the other Borrower or the Guarantor in respect of
     payments made by the Guarantor hereunder, until all amounts owing to the
     Loan Agent, the Collateral Agent and the Lenders by the Borrowers on
     account of the Obligations are paid in full and the Commitments are
     terminated. If any amount shall be paid to either Borrower on account of
     such subrogation rights at any time when all of the Obligations shall not
     have been paid in full, such amount shall be held by such Borrower in trust
     for the Loan Agent, the Collateral Agent and the Lenders, segregated from
     other funds of such Borrower, and shall, forthwith upon receipt by such
     Borrower, be turned over to the Loan Agent in the exact form received by
     such Borrower (duly indorsed by such Borrower to the Loan Agent, if
     required), to be applied against the Obligations, whether matured or
     unmatured, in such order as the Loan Agent may determine.

               (c) Each Borrower shall remain obligated hereunder
     notwithstanding that, without any reservation of rights against the other
     Borrower or the Guarantor and without notice to or further assent by the
     other Borrower or the Guarantor, any demand for payment of any of the
     Obligations made by the Loan Agent, the Collateral Agent or any Lender may
     be rescinded by the Loan Agent, the Collateral Agent or such Lender and any
     of the Obligations continued, and the Obligations, or the liability of any
     other Person upon or for any part thereof, or any collateral security or
     guarantee therefor or right of offset with respect thereto, may, from time
     to time, in whole or in part, be renewed, extended, amended, modified,
     accelerated, compromised, waived, surrendered or released by the Loan
     Agent, the Collateral Agent or any Lender, and this Agreement and the other
     Loan Documents and any other documents executed and delivered in connection
     therewith may be amended, modified, supplemented or terminated, in whole or
     in part, as the Loan Agent (or the Requisite Lenders or all Lenders, as the
     case may be) may deem advisable from time to time, and any collateral
     security, guarantee or right of offset at any time held by the Loan Agent,
     the Collateral Agent or any Lender for the payment of the Obligations may
     be sold, exchanged, waived, surrendered or released. Neither the Loan
     Agent, the Collateral Agent nor any Lender shall have any obligation to
     protect, secure, perfect or insure any Lien at any time held by it as
     security for the Obligations or for the guarantee contained in Article VIII
     or any property subject thereto.

               (d) Each Borrower waives any and all notice of the creation,
     renewal, extension or accrual of any of the Obligations and notice of or
     proof of reliance by the Loan Agent, the Collateral Agent or any Lender
     upon the joint and several liability of the Borrowers and the guarantee
     contained in Article VIII or acceptance thereof; the Obligations, and any
     of them, shall conclusively be deemed to have been created, contracted or
     incurred, or renewed, extended, amended or waived, in reliance upon the
     joint and several liability of the Borrowers and the guarantee contained in
     Article VIII; and all dealings between the Borrowers and the Guarantor,

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     on the one hand, and the Loan Agent, the Collateral Agent and the Lenders,
     on the other hand, likewise shall be conclusively presumed to have been had
     or consummated in reliance thereupon. Each Borrower waives diligence,
     presentment, protest, demand for payment and notice of default or
     nonpayment to or upon the other Borrower or the Guarantor with respect to
     the Obligations. Each Borrower understands and agrees that its joint and
     several liability hereunder for and with respect to the Obligations of the
     other Borrower is continuing, absolute and unconditional without regard to
     any circumstance whatsoever which constitutes, or might be construed to
     constitute, an equitable or legal discharge of such Borrower for and with
     respect to the Obligations of the other Borrower (or of the Guarantor), in
     bankruptcy or in any other instance. When making any demand hereunder or
     otherwise pursuing its rights and remedies hereunder against either
     Borrower, the Loan Agent, the Collateral Agent or any Lender may, but shall
     be under no obligation to, make a similar demand on or otherwise pursue
     such rights and remedies as it may have against the other Borrower, the
     Guarantor or any other Person or against any collateral security or
     guarantee for the Obligations or any right of offset with respect thereto,
     and any failure by the Loan Agent, the Collateral Agent or any Lender to
     make any such demand, to pursue such other rights or remedies or to collect
     any payments from the other Borrower, the Guarantor or any other Person or
     to realize upon any such collateral security or guarantee or to exercise
     any such right of offset, or any release of the other Borrower, the
     Guarantor or any other Person or any such collateral security, guarantee or
     right of offset, shall not relieve a Borrower of any obligation or
     liability hereunder, and shall not impair or affect the rights and
     remedies, whether express, implied or available as a matter of law, of the
     Loan Agent, the Collateral Agent or any Lender against either Borrower. For
     the purposes hereof "demand" shall include the commencement and continuance
     of any legal proceedings.

               (e) The joint liability of the Borrowers shall continue to be
     effective, or be reinstated, as the case may be, if at any time payment, or
     any part thereof, of any of the Obligations is rescinded or must otherwise
     be restored or returned by the Loan Agent, the Collateral Agent or any
     Lender upon the insolvency, bankruptcy, dissolution, liquidation or
     reorganization of a Borrower or the Guarantor, or upon or as a result of
     the appointment of a receiver, intervenor or conservator of, or trustee or
     similar officer for, a Borrower or the Guarantor or any substantial part of
     its property, or otherwise, all as though such payments had not been made.

          SECTION 9.7 SHARING OF PAYMENTS, ETC. The Lenders hereby agree among
themselves that if any of them shall, whether by voluntary payment, by
realization upon security, through the exercise of any right of set-off or
banker's lien, by counterclaim or cross action or by the enforcement of any
right under the Loan Documents or otherwise, or as adequate protection of a
deposit treated as cash collateral under the Bankruptcy Code, receive payment or
reduction of a proportion of the aggregate amount of principal, interest, fees
and other amounts then due and owing to that Lender hereunder or under the other
Loan Documents (collectively, except as provided in the immediately following
exception clause, the "Aggregate Amounts Due" to each Lender) which is greater
than the proportion received by any other Lender in respect of the Aggregate
Amounts Due to such other Lender, except by reason of

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payments that are individual to a particular Lender under Sections 2.10(c),
2.10(e), 2.11, 2.13, 9.3 and 9.4, then the Lender receiving such proportionately
greater payment shall (i) notify the Loan Agent and each other Lender of the
receipt of such payment and (ii) apply a portion of such payment to purchase
participations (which it shall be deemed to have purchased from each seller of a
participation simultaneously upon the receipt by such seller of its portion of
such payment) in the Aggregate Amounts Due to the other Lenders so that all such
recoveries of Aggregate Amounts Due shall be shared by all Lenders in proportion
to the Aggregate Amounts Due to them, provided that if all or part of such
proportionately greater payment received by such purchasing Lender is thereafter
recovered from such Lender upon the bankruptcy or reorganization of the
Borrowers or otherwise, those purchases shall be rescinded and the purchase
prices paid for such participations shall be returned to such purchasing Lender
ratably to the extent of such recovery, but without interest. The Obligors
expressly consent to the foregoing arrangement and agrees that any holder of a
participation so purchased may exercise any and all rights of banker's lien,
set-off or counterclaim with respect to any and all monies owing by the Obligors
to that holder with respect thereto as fully as if that holder were owed the
amount of the participation held by that holder.

          SECTION 9.8 NOTICES, ETC. Unless otherwise specifically provided
herein, any notice, request or other communication herein required or permitted
to be given shall be in writing and may be personally served or sent by
telefacsimile or United States mail or courier service and shall be deemed to
have been given when delivered in person or by courier service, or upon receipt
of telefacsimile, or five Business Days after depositing it in the United States
mail with postage prepaid and properly addressed; provided that notices shall
not be effective until received. For the purposes hereof, the address of each
party hereto shall be as set forth under such party's name on Annex A, or (i) as
to the Borrowers and the Loan Agent and the Collateral Agent, such other address
as shall be designated by such Person in a written notice delivered to the other
parties hereto and (ii) as to each other party hereto, such other address as
shall be designated by such party in a written notice delivered to the Loan
Agent and the Collateral Agent.

          SECTION 9.9 NO WAIVER; REMEDIES. No failure on the part of any Lender
or the Loan Agent or the Collateral Agent to exercise, and no delay in
exercising, any right hereunder shall operate as a waiver thereof; nor shall any
single or partial exercise of any such right preclude any other or further
exercise thereof or the exercise of any other right. The remedies herein
provided are cumulative and not exclusive of any remedies provided by law.

          SECTION 9.10 GOVERNING LAW. This Agreement and the rights and
obligations of the parties hereto shall be governed by, and construed in
accordance with, the law of the State of New York.

          SECTION 9.11 SUBMISSION TO JURISDICTION; SERVICE OF PROCESS.

               (a) Any legal action or proceeding with respect to this Agreement
     or any other Loan Document may be brought in the courts of the State of New
     York or of the United States of America for the Southern District of New
     York,

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     and, by execution and delivery of this Agreement, each of the parties
     hereto hereby accept for itself and in respect of its property, generally
     and unconditionally, the jurisdiction of the aforesaid courts. The parties
     hereto hereby irrevocably waive any objection, including any objection to
     the laying of venue or based on the grounds of forum non conveniens, which
     any of them may now or hereafter have to the bringing of any such action or
     proceeding in such respective jurisdictions.

               (b) Each of the parties hereto hereby irrevocably consent to the
     service of any and all legal process, summons, notices and documents in any
     suit, action or proceeding brought in the United States of America arising
     out of or in connection with this Agreement or any of the other Loan
     Documents by the mailing (by registered or certified mail, postage prepaid)
     or delivering of a copy of such process to such Person in accordance with
     the provisions of Section 9.8. Each Obligor agrees that a final judgment in
     any such action or proceeding shall be conclusive and may be enforced in
     other jurisdictions by suit on the judgment or in any other manner provided
     by law.

               (c) Nothing contained in this Section 9.12 shall affect the right
     of any party hereto to serve process in any other manner permitted by law
     or commence legal proceedings or otherwise proceed against any other party
     hereto in any other jurisdiction.

          SECTION 9.12 WAIVER OF JURY TRIAL. Each of the parties hereto
irrevocably waives trial by jury in any action or proceeding with respect to
this Agreement or any other Loan Document.

          SECTION 9.13 MARSHALING; PAYMENTS SET ASIDE. Neither the Loan Agent,
the Collateral Agent nor any Lender shall be under any obligation to marshal any
assets in favor of the Obligors or any other party or against or in payment of
any or all of the Obligations. To the extent that an Obligor makes a payment or
payments to the Loan Agent for the account of any Lender (each, a "Payee") or
any Payee receives payment from exercise of their rights of setoff, and such
payment or payments or the proceeds of such setoff or any part thereof are
subsequently invalidated, declared to be fraudulent or preferential, set aside
or required to be repaid to a trustee, receiver or any other party, then (i) to
the extent of such recovery, the obligation or part thereof originally intended
to be satisfied, and all rights and remedies therefor, shall be revived and
continued in full force and effect as if such payment had not been made or such
enforcement or setoff had not occurred, and (ii) each Payee shall pay and return
such amount to the Loan Agent as the Loan Agent may be required to disgorge or
otherwise pay to a trustee, receiver or any other party in respect of the
portion of the payment from the Borrowers distributed by the Loan Agent to such
Payee hereunder.

          SECTION 9.14 SECTION TITLES. The Section titles contained in this
Agreement are and shall be without substantive meaning or content of any kind
whatsoever and are not a part of the agreement between the parties hereto.

                                       80

<PAGE>

          SECTION 9.15 EXECUTION IN COUNTERPARTS. This Agreement may be executed
in any number of counterparts and by different parties in separate counterparts,
each of which when so executed shall be deemed to be an original and all of
which taken together shall constitute one and the same agreement. Signature
pages may be detached from multiple separate counterparts and attached to a
single counterpart so that all signature pages are attached to the same
document. Delivery of an executed signature page of this Agreement by facsimile
transmission shall be as effective as delivery of a manually executed
counterpart hereof. A set of the copies of this Agreement signed by all parties
shall be lodged with the Borrowers, the Loan Agent and the Collateral Agent.

          SECTION 9.16 SEVERABILITY. In case any provision in or obligation
under this Agreement or any Note shall be invalid, illegal or unenforceable in
any jurisdiction the validity, legality and enforceability of the remaining
provisions or obligations, or of such provision or obligation in any other
jurisdiction, shall not in any way be affected or impaired thereby.

          SECTION 9.17 CONFIDENTIALITY. Each party hereto shall, and shall
procure that its respective officers, employees and agents shall, keep
confidential and shall not, without the prior written consent of the other
parties, disclose to any third party this Agreement, any other Loan Document or
any of the information, reports or documents supplied by or on behalf of such
other party not otherwise publicly available, except that a party shall be
entitled to disclose this Agreement, any other Loan Document, and any such
information, reports or documents:

                    (i) in connection with any proceeding arising out of or in
     connection with this Agreement or any of the other Loan Documents, to the
     extent that such party may reasonable consider necessary to protect its
     interest; or

                    (ii) to any potential assignee or transferee of any party's
     rights under this Agreement or any of the Loan Documents (and to rating
     agencies, underwriters, investors, lenders, placement agents, and other
     parties, and their respective counsel, auditors, agents and advisers)
     participating in an assignment or participation transaction under Section
     10.2 or any other person proposing to enter into contractual arrangements
     with any party in relation to this Agreement, any of the other Loan
     Documents subject to the relevant party obtaining, in each case to the
     extent reasonable and customary, an undertaking from such potential
     assignee or transferee or other person in corresponding terms to this
     Section 10.18; or

                    (iii) pursuant to any applicable laws, ordinances,
     judgments, decrees, injunctions, writs, rules, regulations, orders,
     interpretations, licenses, permits and orders of any competent court,
     arbitrator or governmental agency or authority in any relevant
     jurisdiction; or

                                       81

<PAGE>

                    (iv) to bank examiners or any other regulatory authority or
     rating agencies or similar entities, if requested to do so; or

                    (v) to its auditors, legal, tax or to other professional
     advisers; or

                    (vi) to its Affiliates and their respective directors,
     officers, employees and agents.

          SECTION 9.18 APPOINTMENT OF INDENTURE TRUSTEE. The Loan Agent and the
Initial Lender hereby appoint U.S. Bank National Association as Indenture
Trustee under the Aircraft Mortgages. Such appointment to be effected by
delivery of an authorization and direction to the Indenture Trustee.

                                       82

<PAGE>

          IN WITNESS WHEREOF, the parties hereto have caused this Agreement to
be executed by their respective officers thereunto duly authorized, as of the
date first above written.

                                        AMERICA WEST AIRLINES, INC.
                                        US AIRWAYS, INC
                                        US AIRWAYS GROUP, INC.

                                        By:
                                            ------------------------------------
                                        Name: Derek J. Kerr
                                        Title: Chief Financial Officer of
                                               each Person listed above

                                        AIRBUS FINANCIAL SERVICES,
                                        as Initial Lender and Loan Agent

                                        By:
                                            ------------------------------------
                                        Name:
                                              ----------------------------------
                                        Title:
                                               ---------------------------------

                                        WELLS FARGO BANK NORTHWEST,
                                        NATIONAL ASSOCIATION,
                                        as Collateral Agent

                                        By:
                                            ------------------------------------
                                        Name:
                                              ----------------------------------
                                        Title:
                                               ---------------------------------

                                       83

<PAGE>

                                     ANNEX A

                                NOTICE ADDRESSES

If to the Borrowers:

America West Airlines, Inc.
400 E. Sky Harbor Blvd.
Phoenix, AZ 85034
Main Telephone: (480) 693-0800
Fax: (480) 693-5155
Attention: Derek J. Kerr

America West Holdings Corporation
111 West Rio Salado Parkway
Tempe, AZ 85281
Main Telephone: (480) 693-0800
Fax: (480) 693-5155
Attention: Derek J. Kerr

US Airways, Inc.
2345 Crystal Drive
Arlington, Virginia 22227
Main Telephone: (703) 872-5050
Fax: (703) 872-5960
Attention: Derek J. Kerr

If to the Initial Lender:

Airbus Financial Services
5th Floor, 6 Georges Dock
I.F.S.C.
Dublin 1, Ireland
Attention: Managing Director
Telephone: 011 3531 790 5500
Facsimile: 011 3531 670 2020

With a copy to:

Airbus North America Holdings, Inc.
198 Van Buren St. Suite 300
Hendon, Virginia 20170

Attn: Vice President - Sales Finance
Telephone: (703) 834-3400
Facsimile: (703) 834-3547

<PAGE>

If to the Loan Agent:

Airbus Financial Services
5th Floor, 6 Georges Dock
I.F.S.C.
Dublin 1, Ireland
Attention: Managing Director
Telephone: 011 3531 790 5500
Facsimile: 011 3531 670 2020

With a copy to:

Airbus North America Holdings, Inc.
198 Van Buren St. Suite 300
Hendon, Virginia 20170

Attn: Vice President - Sales Finance
Telephone: (703) 834-3400
Facsimile: (703) 834-3547

If to the Collateral Agent:

Wells Fargo Bank Northwest, National Association
MAC: U1228-120
299 South Main Street, 12th Floor
Salt Lake City, Utah 84111
Telephone: (801) 246-5630
Facsimile: (801) 246-5053
Attention: Corporate Trust Services

                                       85

<PAGE>

                                     ANNEX B

                                 LENDING OFFICE

Airbus Financial Services
5th Floor, 6 Georges Dock
I.F.S.C.
Dublin 1
Ireland

<PAGE>

                                     ANNEX C

                               LENDER COMMITMENTS
                                 INITIAL AMOUNTS

<TABLE>
<CAPTION>
                      TOTAL      TRANCHE A    TRANCHE B    TRANCHE C    TRANCHE D    TRANCHE E
 NAME OF LENDER    COMMITMENT   COMMITMENT   COMMITMENT   COMMITMENT   COMMITMENT   COMMITMENT
----------------   ----------   ----------   ----------   ----------   ----------   ----------
<S>                <C>          <C>          <C>          <C>          <C>          <C>
AIRBUS FINANCIAL       $0           $0           $0           $0           $0           $0
    SERVICES

</TABLE>

<PAGE>

                                    EXHIBIT A

                            ASSIGNMENT AND ASSUMPTION

          Reference is made to the Loan Agreement, dated as of September 27,
2005 (as the same may be amended, restated, supplemented or otherwise modified
from time to time, the "Loan Agreement"), among the Borrowers, the Guarantor,
Airbus Financial Services, as Initial Lender and Loan Agent, and Wells Fargo
Bank Northwest, National Association, as Collateral Agent. Unless otherwise
defined herein, terms defined in the Loan Agreement and used herein shall have
the meanings given to them in the Loan Agreement.

          The Assignor identified on Schedule l hereto (the "Assignor") and the
Assignee identified on Schedule l hereto (the "Assignee") agree as follows:

1. The Assignor hereby irrevocably sells and assigns to the Assignee without
recourse to the Assignor, and the Assignee hereby irrevocably purchases and
assumes from the Assignor without recourse to the Assignor, as of the Effective
Date (as defined below), the interest described in Schedule 1 hereto (the
"Assigned Interest") in and to the Assignor's rights and obligations under the
Loan Agreement with respect to those credit facilities contained in the Loan
Agreement as are set forth on Schedule 1 hereto (individually, an "Assigned
Facility"; collectively, the "Assigned Facilities"), in a principal amount for
each Assigned Facility as set forth on Schedule 1 hereto.

2. The Assignor (a) makes no representation or warranty and assumes no
responsibility with respect to any statements, warranties or representations
made in or in connection with the Loan Agreement or with respect to the
execution, legality, validity, enforceability, genuineness, sufficiency or value
of the Loan Agreement, any other Loan Document or any other instrument or
document furnished pursuant thereto, other than that the Assignor has not
created any adverse claim upon the interest being assigned by it hereunder and
that such interest is free and clear of any such adverse claim and (b) makes no
representation or warranty and assumes no responsibility with respect to the
financial condition of the Guarantor, the Borrower, any of its Affiliates or any
other obligor or the performance or observance by the Guarantor, the Borrower,
any of its Affiliates or any other obligor of any of their respective
obligations under the Loan Agreement or any other Loan Document or any other
instrument or document furnished pursuant hereto or thereto.

3. The Assignee (a) represents and warrants that it is legally authorized to
enter into this Assignment and Assumption; (b) confirms that it has received a
copy of the Loan Agreement, together with copies of the financial statements
delivered pursuant to Section 4.3 thereof and such other documents and
information as it has deemed appropriate to make its own credit analysis and
decision to enter into this Assignment and Assumption; (c) agrees that it will,
independently and without reliance upon the Assignor, the Loan Agents, the
Collateral Agent or any Lender and based on such documents and information as it
shall deem appropriate at the time, continue to make its own credit decisions in
taking or not taking action under the Loan Agreement, the other Loan

<PAGE>

Documents or any other instrument or document furnished pursuant hereto or
thereto; (d) appoints and authorizes the Loan Agent or the Collateral Agent to
take such action as agent on its behalf and to exercise such powers and
discretion under the Loan Agreement, the other Loan Documents or any other
instrument or document furnished pursuant hereto or thereto as are delegated to
the Loan Agent and the Collateral Agent by the terms thereof, together with such
powers as are incidental thereto; and (e) agrees that it will be bound by the
provisions of the Loan Agreement and will perform in accordance with its terms
all the obligations which by the terms of the Loan Agreement are required to be
performed by it as a Lender including its obligations pursuant to Section
2.13(f) of the Loan Agreement.

4. The effective date of this Assignment and Assumption shall be the Effective
Date of Assignment described in Schedule 1 hereto (the "Effective Date").
Following the execution of this Assignment and Assumption, it will be delivered
to the Loan Agent for acceptance by it and recording by the Loan Agent pursuant
to the Credit Agreement, effective as of the Effective Date (which shall not,
unless otherwise agreed to by the Loan Agent, be earlier than five Business Days
after the date of such acceptance and recording by the Loan Agent).

5. Upon such acceptance and recording, from and after the Effective Date, the
Loan Agent shall make all payments in respect of the Assigned Interest
(including payments of principal, interest, fees and other amounts) to the
Assignor for amounts which have accrued to the Effective Date and to the
Assignee for amounts which have accrued subsequent to the Effective Date.

6. From and after the Effective Date, (a) the Assignee shall be a party to the
Loan Agreement and, to the extent provided in this Assignment and Assumption,
have the rights and obligations of a Lender thereunder and under the other Loan
Documents and shall be bound by the provisions thereof and (b) the Assignor
shall, to the extent provided in this Assignment and Assumption, relinquish its
rights and be released from its obligations under the Loan Agreement.

7. This Assignment and Assumption shall be governed by and construed in
accordance with the laws of the State of New York.

          IN WITNESS WHEREOF, the parties hereto have caused this Assignment and
Assumption to be executed as of the date first above written by their respective
duly authorized officers on Schedule 1 hereto.

<PAGE>

                                   Schedule 1
                  to Assignment and Assumption with respect to
               the Loan Agreement, dated as of September 27, 2005,
    among the US Airways, Inc. and America West Airlines, Inc., as Borrowers,
the Guarantor, and Airbus Financial Services, as Initial Lender and Loan Agent,
    and Wells Fargo Bank Northwest, National Association, as Collateral Agent

Name of Assignor: ______________________

Name of Assignee: ______________________

Effective Date of Assignment: _________________

<TABLE>
<CAPTION>
Credit Facility       Principal          Commitment
   Assigned       Amount Assigned   Percentage Assigned
---------------   ---------------   -------------------
<S>               <C>               <C>
                  $______________   __________________%
</TABLE>

[Name of Assignee]                      [Name of Assignor]

By:                                     By:
   ----------------------------------       ------------------------------------
Title:                                  Title:
       ------------------------------          ---------------------------------

Accepted for Recordation in the
Register:                               Required Consents (if any):

_____________________________________, as US Airways, Inc.
Loan Agent

By:                                     By:
    ---------------------------------       ------------------------------------
Title:                                  Title:
       ------------------------------          ---------------------------------

                                        America West Airlines, Inc.

                                        By:
                                            ------------------------------------
                                        Title:
                                               ---------------------------------

<PAGE>

                                    EXHIBIT B

                             FORM OF PROMISSORY NOTE
                                  [TRANCHE __]

U.S.$_____________                                            Dated: _____, 2005
Tranche ___

          FOR VALUE RECEIVED, the undersigned, US Airways, Inc., a Delaware
corporation, and America West Airlines, Inc., a Delaware corporation
(collectively, the "Borrowers"), HEREBY, JOINTLY AND SEVERALLY, PROMISE TO PAY
to Airbus Financial Services, Inc., as Loan Agent under the Loan Agreement
referred to below ____________ for the account of the Lenders as defined in the
Loan Agreement referred to below), subject to the provisions of Section 2.3(c)
of the Loan Agreement, the principal sum of U.S.$_________ or, if less, the
aggregate outstanding principal amount of all Tranche [___] Loans made by the
Lender to the Borrowers pursuant to the Loan Agreement dated as of September 27,
2005 among the Borrowers, Guarantor and Airbus Financial Services, as the
Initial Lender and Loan Agent, and Wells Fargo Bank Northwest, National
Association, as Collateral Agent (as amended or modified from time to time, the
"Loan Agreement"; the terms defined therein being used herein as therein
defined), plus the amount of accrued interest hereon capitalized and added to
the principal of the Loans pursuant to Section 2.3(a) of the Loan Agreement. The
outstanding principal amount of this Note shall be payable on the date specified
in Section 2.3(b) of the Loan Agreement, subject to the provisions of Section
2.3(c) of the Loan Agreement. The final payment required to be made on this
Promissory Note, after taking into account Section 2.3(c) of the Loan Agreement,
shall be in an amount sufficient to pay in full the accrued and unpaid interest
hereon.

          The Borrowers, jointly and severally, subject to the provisions of
Section 2.3 of the Loan Agreement, promise to pay interest on the unpaid
principal amount hereof from the date hereof until such principal amount is paid
in full, at such interest rates, and payable at such times, as are specified in
the Loan Agreement.

          Both principal and interest are payable in lawful money of the United
States of America to the Loan Agent, to the account specified in Section 2.9(a)
of the Loan Agreement, in same day funds.

          This Promissory Note is one of the Notes referred to in, and is
entitled to the benefits of, the Loan Agreement. The Loan Agreement, among other
things, contains provisions for acceleration of the maturity hereof upon the
happening of certain stated events and also for prepayments on account of
principal hereof prior to the maturity hereof upon the terms and conditions
therein specified. The obligations of the Borrower under this Promissory Note
and the Loan Agreement are secured by collateral as provided in the Loan
Agreement and in the Collateral Documents.

<PAGE>

          This Promissory Note shall be governed by, and construed in accordance
with, the laws of the State of New York.

                                       3

<PAGE>

          IN WITNESS WHEREOF, the Borrowers, jointly and severally, have caused
this Promissory Note to be executed and delivered by its duly authorized officer
as of the date and at the place set forth above.

                                        AMERICA WEST AIRLINES, INC.

                                        By:
                                            ------------------------------------
                                        Name:
                                              ----------------------------------
                                        Title:
                                               ---------------------------------

                                        US AIRWAYS, INC.

                                        By:
                                            ------------------------------------
                                        Name:
                                              ----------------------------------
                                        Title:
                                               ---------------------------------

                                       4

<PAGE>

                           TRANCHE ___ PROMISSORY NOTE

<TABLE>
<CAPTION>
                                                                                   Aggregate Outstanding
                                                                                  Principal Amount After
                                                                                  Giving Effect to Loans
               Payment   Principal Amount   Principal Amount of   S&P Rating at     Made or Payments of
Funding Date     Date      of Loan Made         Loan Repaid          Funding        Principal Received
------------   -------   ----------------   -------------------   -------------   ----------------------
<S>            <C>       <C>                <C>                   <C>             <C>

</TABLE>

<PAGE>

                                    EXHIBIT C

                               NOTICE OF BORROWING

Airbus Financial Services,
   as Loan Agent under the
   Loan Agreement referred to below
5th Floor, 6 Georges Dock
I.F.S.C.
Dublin 1
Ireland
Telephone: +353 1 790 5500
Facsimile: +353 1 670 2020
Attention: Managing Director

                                                                __________, 2005

          Re:  AMERICA WEST AIRLINES, INC. AND US AIRWAYS, INC. (the
               "Borrowers")

     Reference is made to the $89,000,000 Loan Agreement, dated as of September
27, 2005 (as the same may be amended, restated, supplemented or otherwise
modified from time to time, the "Loan Agreement"), among the Borrowers, the
Guarantor, Airbus Financial Services, as Initial Lender and Loan Agent, and
Wells Fargo Bank Northwest, National Association, as Collateral Agent, and
entitled to the benefits thereof. Capitalized terms used herein and not
otherwise defined herein are used herein as therein defined.

     The Borrowers hereby give you irrevocable notice, pursuant to Section 2.2
of the Loan Agreement, that the undersigned hereby requests a Borrowing under
the Loan Agreement and, in that connection, sets forth below the information
relating to such Borrowing (the "Proposed Borrowing") as required by Section 2.2
of the Loan Agreement:

          (i) The date of the Proposed Borrowing is ________, 200__ (the
     "Funding Date"), a date permitted under the applicable provisions of
     Section 2.1 of the Loan Agreement.

          (ii) The aggregate amount of the Proposed Borrowing is $________.

          (iii) The Proposed Borrowing is for Tranche ___ Loans and such
     proceeds shall be used in accordance with Section 2.4(f) of the Loan
     Agreement.

          (iv) As of the date hereof, the corporate credit rating assigned by
     S&P to the Guarantor and its consolidated subsidiaries, taken together, is
     ____.

<PAGE>

          (v) [For Tranche B Borrowings] [All amounts due and payable under the
     A321 Airbus Financings have been paid in full.]

          (v) [For Tranche B Borrowings] [All amounts due and payable on the
     Funding Date under the A321 Airbus Financings have been, or immediately
     following the application of the proceeds of the Proposed Borrowing will
     have been, paid in full.]

          [(v) [For Tranche C Borrowings] Copies of the invoices for goods and
     services referred to in Section 2.1(c) paid 30 or more days before the date
     of this Proposed Borrowing not used to support prior Borrowings of Tranche
     C Loans, are attached hereto.]

          [(v) [For Tranche D Borrowings] All amounts due and payable on or
     before September 20, 2005, under the Trust 2001 1C Certificates of US
     Airways have been paid in full and received by the holders thereof.]

     The undersigned hereby certifies that the following statements shall be
true on the Funding Date:

          (i) the representations and warranties of each Borrower and the
     Guarantor set forth in Article IV of the Loan Agreement are true and
     correct in all material respects on and as of the Funding Date, before and
     after giving effect to the Proposed Borrowing and to the application of the
     proceeds therefrom as though made on and as of such date, (except to the
     extent such representations and warranties by their terms expressly relate
     to an earlier date, in which case the representations and warranties shall
     have been true and correct in all material respects on and as of such
     earlier date); and

          (ii) no Event of Default or Default has occurred and is, or would
     result from the Proposed Borrowing and the application of the proceeds
     therefrom.

                                        AMERICA WEST AIRLINES, INC.

                                        By:
                                            ------------------------------------
                                        Name:
                                              ----------------------------------
                                        Title: Chief Financial Officer/
                                               President/ Executive Officer

                                        US AIRWAYS, INC.

                                        By:
                                            ------------------------------------
                                        Name:
                                              ----------------------------------
                                        Title: Chief Financial Officer/
                                               President/ Executive Officer<PAGE>

                                                                    Exhibit 10.5

            *** CERTAIN CONFIDENTIAL INFORMATION HAS BEEN OMITTED AND
                FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
                    COMMISSION PURSUANT TO RULE 24B-2 OF THE
                   SECURITIES EXCHANGE ACT OF 1934, AS AMENDED

                         AIRBUS A350 PURCHASE AGREEMENT

                         Dated as of September 27, 2005

                                     between

                                 AVSA, S.A.R.L.,

                                                                          Seller

                                       and

                US AIRWAYS, INC., AMERICA WEST AIRLINES, INC. and
                             US AIRWAYS GROUP, INC.

                                                                          Buyers

AWE/USA - A350 - PA                                                            i
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

                                    CONTENTS

<TABLE>
<CAPTION>
CLAUSES       TITLE
-------       -----
<S>           <C>
   0          DEFINITIONS

   1          SALE AND PURCHASE

   2          SPECIFICATION

   3          PRICE

   4          PRICE REVISION

   5          PAYMENT TERMS

   6          INSPECTION

   7          CERTIFICATION

   8          TECHNICAL ACCEPTANCE

   9          DELIVERY

  10          EXCUSABLE DELAY AND TOTAL LOSS

  11          INEXCUSABLE DELAY

  12          WARRANTIES AND SERVICE LIFE POLICY

  13          PATENT AND COPYRIGHT INDEMNITY

  14          TECHNICAL DATA

  15          SELLER REPRESENTATIVES

  16          TRAINING AND TRAINING AIDS

  17          SUPPLIER PRODUCT SUPPORT

  18          BUYER FURNISHED EQUIPMENT
</TABLE>

AWE/USA - A350 - PA                                                            1
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

<TABLE>
<CAPTION>
CLAUSES       TITLE
-------       -----
<S>           <C>
  19          INDEMNITIES AND INSURANCE

  20          ASSIGNMENTS AND TRANSFERS

  21          TERMINATION EVENTS

  22          MISCELLANEOUS PROVISIONS

  23          CERTAIN REPRESENTATIONS OF THE PARTIES
</TABLE>

<TABLE>
<CAPTION>
EXHIBITS
--------
<S>           <C>
EXHIBIT A-1   A350-800 STANDARD SPECIFICATION

EXHIBIT A-2   A350-900 STANDARD SPECIFICATION

EXHIBIT B-1   SCN FORM

EXHIBIT B-2   MSCN FORM

EXHIBIT C     SELLER SERVICE LIFE POLICY

EXHIBIT D     CERTIFICATE OF ACCEPTANCE

EXHIBIT E     BILL OF SALE

EXHIBIT F     TECHNICAL DATA AND SOFTWARE SERVICES

EXHIBIT G     SELLER PRICE REVISION FORMULA

EXHIBIT H     TERMS AND CONDITIONS FOR LICENSE FOR USE OF SOFTWARE
</TABLE>

AWE/USA - A350 - PA                                                            2
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

                               PURCHASE AGREEMENT

This Agreement is made this 27th day of September 2005

between

            AVSA, S.A.R.L, a societe a responsabilite limitee organized and
            existing under the laws of the Republic of France, having its
            registered office located at

            2, rond-point Maurice Bellonte
            31700 Blagnac, France

            (hereinafter referred to as the "SELLER")

and

            US Airways, Inc., America West Airlines, Inc. and US Airways Group,
            Inc., each a corporation organized and existing under the laws of
            the State of Delaware, United States of America, and each having its
            principal corporate offices located at 4000 East Sky Harbor
            Boulevard, Phoenix, AZ 85034 (each hereinafter referred to as a
            "BUYER" and, collectively, the "BUYERS").

WHEREAS, the Buyers wish to purchase and the Seller is willing to sell twenty
(20) Airbus A350 model aircraft, on the terms and conditions herein provided;
and

WHEREAS, the Seller is a sales subsidiary of Airbus S.A.S. and will purchase
such aircraft from Airbus S.A.S. for resale to the Buyers,

NOW THEREFORE IT IS AGREED AS FOLLOWS:

AWE/USA - A350 - PA                                                            3
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

0     DEFINITIONS

      For all purposes of this Agreement, except as otherwise expressly provided
      or unless the context otherwise requires, the following terms will have
      the following meanings:

      A350 Aircraft - any or all of the Airbus A350-800 Aircraft or A350-900
      Aircraft.

      A350-800 Aircraft - any or all of the Airbus A350-800 model aircraft to be
      purchased by the Seller and sold to the Buyers pursuant to this Agreement,
      together with all components, equipment, parts and accessories installed
      in or on such aircraft and the Propulsion Systems installed thereon.

      A350-900 Aircraft - any or all of the Airbus A350-900 model aircraft to be
      purchased by the Seller and sold to the Buyers pursuant to this Agreement,
      together with all components, equipment, parts and accessories installed
      in or on such aircraft and the Propulsion Systems installed thereon.

      A350-800 Specification - the A350-800 Standard Specification, as amended
      from time to time in accordance with this Agreement.

      A350-800 Standard Specification - the A350-800 standard specification
      document number G.000.08000, Issue B, dated June 30, 2005, published by
      the Manufacturer, which includes a maximum take-off weight ("MTOW") of 245
      metric tons, a copy of which is annexed as Exhibit A-1.

      A350-900 Specification - the A350-900 Standard Specification, as amended
      from time to time in accordance with this Agreement.

      A350-900 Standard Specification - the A350-900 standard specification
      document number G.000.09000, Issue B, dated June 30, 2005, published by
      the Manufacturer, which includes an MTOW of 245 metric tons, a copy of
      which is annexed as Exhibit A-2.

      Affiliate - with respect to any person or entity, any other person or
      entity directly or indirectly controlling, controlled by or under common
      control with such person or entity, but not, in the case of AVSA or the
      Manufacturer, any of the Associated Contractors.

      Agreement - this Airbus A350 purchase agreement dated as of the date
      hereof, including exhibits and appendices attached hereto as the same may
      be amended or modified and in effect from time to time.

      Aircraft - any or all of the A350 Aircraft for which the delivery schedule
      is set forth in Clause 9.1.1 hereof and any or all of any other aircraft
      to be firmly sold by the Seller and firmly purchased by the Buyers
      pursuant to this Agreement, together with all components, equipment, parts
      and accessories installed in or on such aircraft and the Propulsion
      Systems installed thereon upon Delivery.

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      Airframe- any Aircraft, excluding the Propulsion Systems therefor.

      ANACS - Airbus North America Customer Services, Inc., a corporation
      organized and existing under the laws of Delaware, having an office
      located at 198 Van Buren Street, Suite 300, Herndon, VA 20170, or any
      successor thereto.

      Associated Contractors - collectively, the following:

      (1)   Airbus France S.A.S., whose principal office is at
            316, route de Bayonne
            31060 Toulouse, France

      (2)   Airbus UK Ltd, whose principal office is at
            New Filton House, Filton
            Bristol, BS 997AR, Great Britain

      (3)   Airbus Espana S.L., whose principal office is at
            Plaza de John Lennon N degrees 2,
            s/n Getafe
            28096 Madrid, Spain

      (4)   Airbus Deutschland GmbH, whose principal office is at
            Kreetslag 10
            21129 Hamburg, Germany

      ATA Specification 100 - the specification issued by the Air Transport
      Association of America relating to manufacturers' technical data.

      ATA Specification 101 - the specification issued by the Air Transport
      Association of America relating to ground equipment technical data.

      ATA Specification 102 - the specification issued by the Air Transport
      Association of America relating to software programs.

      ATA Specification 200 - the specification issued by the Air Transport
      Association of America relating to integrated data processing.

      ATA Specification 300 - the specification issued by the Air Transport
      Association of America relating to the packaging of spare parts shipments.

      ATA Specification 2000 - the specification issued by the Air Transport
      Association of America relating to an industry-wide communication system
      linking suppliers and users for the purposes of spares provisioning,
      purchasing, order administration, invoicing and information or data
      exchange.

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<PAGE>

      ATA Specification 2100 - the specification issued by the Air Transport
      Association of America relating to the standards for the presentation of
      technical information prepared as digital media (magnetic tape or CD ROM).

      ATA Specification 2200 - the specification issued by the Air Transport
      Association of America relating to the preparation of technical
      documentation in support of aircraft maintenance.

      ATSB - The Air Transportation Stabilization Board.

      Aviation Authority - when used with respect to any jurisdiction, the
      government entity that, under the laws of such jurisdiction, has control
      over civil aviation or the registration, airworthiness or operation of
      civil aircraft in such jurisdiction.

      Balance of the Final Contract Price - means the amount payable by the
      Buyers to the Seller on the Delivery Date for an Aircraft after deducting
      from the Final Contract Price for such Aircraft the amount of all
      Predelivery Payments received by the Seller from the Buyers, or any of
      them, in respect of such Aircraft on or before the Delivery Date for such
      Aircraft.

      Base Price - as defined in Clause 3.1.

      Buyer Furnished Equipment or BFE - for any Aircraft, all the items of
      equipment that will be furnished by the Buyers and installed in the
      Aircraft by the Seller pursuant to Clause 18, as listed in the
      Specification.

      Certificate of Acceptance - as defined in Clause 8.3.

      Change in Law - as defined in Clause 7.3.1.

      Customer Originated Changes or COC - data originating from the Buyers, or
      any of them, that are introduced into Seller's Technical Data and
      Documentation, as more completely set forth in Clause 14.9.

      Delivery - the transfer of title to the Aircraft from the Seller to the
      Designated Buyers.

      Delivery Date - the date on which Delivery occurs.

      Delivery Location - the facilities of the Manufacturer at the location of
      final assembly of the Aircraft, which is currently at the works of Airbus
      France S.A.S. works in Toulouse, France.

      Designated Buyer - as defined in Clause 9.

      Development Changes - as defined in Clause 2.1.4.

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      DGAC - the Direction Generale de l'Aviation Civile of France, or any
      successor agency thereto.

      EASA-European Aviation Safety Agency or any successor agency thereto.

      Excusable Delay - as defined in Clause 10.1.

      Export Certificate of Airworthiness - an export certificate of
      airworthiness issued by the Aviation Authority of the Delivery Location.

      FAA - the U.S. Federal Aviation Administration, or any successor agency
      thereto.

      Final Contract Price - as defined in Clause 3.2.

      Free Carrier or FCA - as defined in Incoterms 2000: ICC Official Rules for
      the Interpretation of Trade Terms, published by the International Chamber
      of Commerce.

      In-house Warranty Labor Rate - as defined in Clause 12.1.8(v).

      In-house Warranty Repair - as referred to in Clause 12.1.8.

      Initial Payment- each of the initial payment amounts described in Clause
      5.3.

      Interface Problem - as defined in Clause 12.4.1.

      LIBOR - the London Interbank Offered Rate determined on the basis of the
      offered rates for deposits in US dollars for each stated interest period
      (or for six-month deposits in US dollars if no interest period is stated),
      which appears on the Reuters Screen LIBO Page as of 11:00 a.m., London
      time, on the second Working Day prior to the start of the relevant
      interest period. If at least two (2) such offered rates appear on the
      Reuters Screen LIBO Page, the rate for that interest period will be the
      arithmetic mean of such offered rates rounded to the nearest one-hundred
      thousandth of a basis point. If fewer than two (2) offered rates appear,
      the rate for that interest period will be "LIBOR" as quoted by National
      Westminster Bank, plc or any successor thereto. "Reuters Screen LIBO Page"
      means the display designated as page "LIBO" on the Reuters Monitor Money
      Rates Service (or any successor to such page or service).

      Manufacturer - Airbus S.A.S., societe par actions simplifiee, of the
      Republic of France.

      Manufacturer Specification Change Notice or MSCN -as defined in Clause
      2.1.3.

      Predelivery Payment - any of the payments made in accordance with Clause
      5.2.

      Predelivery Payment Reference Price - as defined in Clause 5.2.2.

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      Propulsion Systems - the two (2) General Electric GEnx-1A72 powerplants
      installed on an Aircraft or to be installed on an Aircraft at Delivery,
      each composed of the powerplant (as such term is defined in Chapters 70-80
      of ATA Specification 100 (Revision 21), but limited to the equipment,
      components, parts and accessories included in the powerplant, as so
      defined) that have been sold to the Manufacturer by General Electric.

      Ready for Delivery - with respect to any Aircraft, the term applicable to
      such Aircraft when (i) the Technical Acceptance Process has been
      successfully completed for such Aircraft and (ii) the Export Certificate
      of Airworthiness has been issued therefor.

      Resident Customer Support Representative - as set forth in Clause 15.2.1.

      Scheduled Delivery Month - as defined in Clause 9.1.1.

      SCN - as set forth in Clause 2.1.2

      Seller Price Revision Formula - as set forth in Exhibit G.

      Service Life Policy - as set forth to in Clause 12.2.

      Software Products - software, whether bundled with data or not,
      specifically designed to provide the Buyers with certain maintenance and
      operation capabilities further detailed in the ANACS Customer Support
      Catalog.

      Specification - collectively or individually, as applicable, the A350-800
      Specification or A350-900 Specification.

      Specification Change Notice or SCN - as defined in Clause 2.1.2.

      Supplier - any supplier of Supplier Parts.

      Supplier Part - any component, equipment, accessory or part installed in
      an Aircraft at the time of Delivery thereof, not including the Propulsion
      Systems or Buyer Furnished Equipment, for which there exists a Supplier
      Product Support Agreement.

      Supplier Product Support Agreement - an agreement between the Manufacturer
      and a Supplier containing enforceable and transferable warranties (and in
      the case of landing gear suppliers, service life policies for selected
      structural landing gear elements).

      Technical Data - as set forth in Exhibit F.

      Technical Acceptance Process - as defined in Clause 8.1.1.

      Termination Event - as defined in Clause 21.1.

      Training Conference - as defined in Clause 16.4.1.

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<PAGE>

      Type Certificate - as defined in Clause 7.1.

      Warranted Part - as defined in Clause 12.1.1.

      Warranty Claim - as defined in Clause 12.1.7(v).

      Working Day - with respect to any action to be taken hereunder, a day
      other than a Saturday, Sunday or other day designated as a holiday in the
      jurisdiction in which such action is required to be taken.

      The terms "herein," "hereof" and "hereunder" and other words of similar
      import refer to this Agreement, and not a particular Clause thereof. The
      definition of a singular in this Clause will apply to plurals of the same
      words.

      Except for the purposes of and as provided in Clause 22.10, references in
      this Agreement to an exhibit, schedule, article, section, subsection or
      clause refer to the appropriate exhibit or schedule to, or article,
      section, subsection or clause in this Agreement.

      Except for the preceding sentence, each agreement defined in this Clause 0
      will include all appendices, exhibits and schedules to such agreement. If
      the prior written consent of any person is required hereunder for an
      amendment, restatement, supplement or other modification to any such
      agreement and the consent of each such person is obtained, references in
      this Agreement to such agreement will be to such agreement as so amended,
      restated, supplemented or modified.

      References in this Agreement to any statute will be to such statute as
      amended or modified and in effect at the time any such reference is
      operative.

      Technical and trade terms used but not defined herein will be defined as
      generally accepted in the airline and/or aircraft manufacturing industries
      or as otherwise described.

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<PAGE>

1     SALE AND PURCHASE

      The Seller will cause to be manufactured and will sell and deliver, and
      the Buyer will purchase (from the Seller) and take delivery of the
      Aircraft, subject to the terms and conditions in this Agreement.

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<PAGE>

2     SPECIFICATION

2.1   Specification Documents

2.1.1 The Aircraft will be manufactured in accordance with the applicable
      Specification.

2.1.2 Specification Change Notice

      The Specification may be amended in writing by the Buyers and the Seller
      by a Specification Change Notice in substantially the form set out in
      Exhibit B-1 (each, an "SCN"). An SCN will set out the SCN's effectivity
      and the particular change to be made to the Specification and the effect,
      if any, of such change on design, performance, weight, Scheduled Delivery
      Month of the Aircraft affected thereby, interchangeability or
      replaceability requirements of the Specification and text of the
      Specification. An SCN may result in an adjustment of the Base Price of the
      Aircraft, which adjustment, if any, will be specified in the SCN. SCNs
      will not be binding on either party until signed by persons duly
      authorized by each of the Buyers and the Seller, but upon being so signed,
      will constitute amendments to this Agreement.

2.1.3 [...***...]

2.1.4 Development Changes

      As stated in Clause 2.1.3, changes may be made by the Seller without the
      Buyers' consent when changes to the Aircraft that do not adversely affect
      price, Scheduled Delivery Month, weight of the Aircraft affected thereby,
      performance, interchangeability requirements or replaceability
      requirements of the Specifications of the Aircraft affected thereby are
      deemed by the Seller to be necessary to improve the Aircraft affected
      thereby, prevent delay or ensure compliance with this Agreement
      ("DEVELOPMENT Changes"). Development Changes will be made by either an
      MSCN or a manufacturer's information document prior to Delivery of the
      relevant Aircraft.

***   Confidential Treatment Requested

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<PAGE>

2.2   Customization Milestones Chart

      Within a reasonable period after signature of this Agreement, the Seller
      will provide the Buyers with a chart called the "Customization Milestones
      Chart," defining the lead times before Delivery needed for agreeing on
      items requested by the Buyers from the Standard Specifications and
      Configuration Guides CD-ROM.

2.3   Propulsion Systems

      Each Airframe will be equipped with a set of Propulsion Systems. Each
      Airframe will be equipped with nacelles and thrust reversers.

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<PAGE>

3     PRICE

3.1   Base Price of the Aircraft

3.1.1 Aircraft

3.1.1. The Base Price of each A350-800 Aircraft is the sum of

      (i)   [...***...]

      (ii)  [...***...]

3.1.2 The Base Price of each A350-900 Aircraft is the sum of

      (i)   [...***...]

      (ii)  [...***...]

3.2   The Final Contract Price of an Aircraft will be the sum of:

      (i)   the Base Price of the applicable Aircraft, adjusted to the Delivery
            Date of such Aircraft in accordance with the Seller Price Revision
            Formula, [...***...];

      (ii)  the price of any SCNs for the Aircraft entered into after the date
            of signature of this Agreement, as adjusted to the Delivery Date in
            accordance with the Seller Price Revision Formula; and

      (iii) any other amount resulting from any other provisions of this
            Agreement and/or any other written agreement between the Buyers and
            the Seller relating to the Aircraft.

***  Confidential Treatment Requested

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<PAGE>

3.3   Taxes, Duties and Imposts

3.3.1 [...***...]

3.3.2 [...***...]

*** Confidential Treatment Requested

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<PAGE>

3.3.3 [...***...]

3.3.4 [...***...]

*** Confidential Treatment Requested

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<PAGE>

4     PRICE REVISION

      [...***...], the Base Price of the Aircraft is subject to revision up to
      and including the Delivery Date, in accordance with the Seller Price
      Revision Formula.

***  Confidential Treatment Requested

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<PAGE>

5     PAYMENT TERMS

5.1   The Buyers will, jointly and severally, pay the Predelivery Payments, the
      Balance of the Final Contract Price and any other amount due hereunder in
      immediately available funds in United States dollars to the Seller's
      account with CALYON New York, 1301 Avenue of the Americas, New York, or to
      such other account within the United States as may be designated by the
      Seller.

5.2   Predelivery Payments

5.2.1 Predelivery Payments are nonrefundable and will be paid by the Buyers,
      jointly and severally, to the Seller for each Aircraft. [...***...] The
      aggregate Predelivery Payment amount is thirty percent (30%) of the
      Predelivery Payment Reference Price.

5.2.2 The Predelivery Payment Reference Price is:

           A =    Pb (1 + 0.04N)

           where

           A =    the Predelivery Payment Reference Price
                  for an Aircraft to be delivered in calendar
                  year T.

           Pb =   the Base Price of the Aircraft.

           N  =   (T - 2005).

           T  =   the year of delivery of the relevant Aircraft.

5.2.3 Predelivery Payments will be paid according to the following schedule.

<TABLE>
<CAPTION>
                                                                            Percentage of Predelivery
                                                                                     Payment
Payment Date                                                                     Reference Price
------------                                                                -------------------------
<S>           <C>                                                           <C>
1st Payment   On signature of this Agreement                                        [...***...]

              No later than the first Working Day of the
              following months:

2d Payment    The thirty-sixth (36th) month before the                              [...***...]
              Scheduled Delivery Month of each Aircraft as set
              forth in this Agreement

</TABLE>

*** Confidential Treatment Requested

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<PAGE>

<TABLE>
<S>           <C>                                                            <C>
3d Payment    The twenty-fourth (24th) month before the
              Scheduled Delivery Month of each Aircraft as set                5%
              forth in this Agreement

4th Payment   The eighteenth (18th) month before the Scheduled                5%
              Delivery Month of each Aircraft as set forth in
              this Agreement

5th Payment   The twelfth (12th) month before the Scheduled                   5%
              Delivery Month of each Aircraft as set forth in
              this Agreement

6th Payment   The sixth (6th) month before the Scheduled                      5%
              Delivery Month of each Aircraft as set forth in
              this Agreement

TOTAL PAYMENT PRIOR TO DELIVERY                                              30%
</TABLE>

      All Predelivery Payments that are past due on signature of this Agreement
      will be paid at signature of this Agreement.

5.2.4 The Seller will be entitled to hold and use any Predelivery Payment as
      absolute owner thereof, subject only to the obligation to deduct
      Predelivery Payments from the Final Contract Price when calculating the
      Balance of the Final Contract Price. The Seller will be under no
      obligation to segregate any Predelivery Payment, or any amount equal
      thereto, from the Seller's funds.

5.2.5 SCN Predelivery Payment

      [...***...]

      (i)   For each such SCN executed before the first day of the eighteenth
            (18th) month before the Scheduled Delivery Month, the Buyers will,
            jointly and severally, make a Predelivery Payment equal to fifteen
            percent (15%) of the SCN price. This Predelivery Payment will be
            paid on the first day of the twelfth (12th) month before the
            Scheduled Delivery Month.

      (ii)  For each such SCN executed after the first day of the eighteenth
            month (18th) and before the first day of the twelfth (12th) month
            before the Scheduled Delivery Month, this Predelivery Payment will
            amount to thirty percent (30%) of the SCN price, and for each SCN
            executed after the first day of the twelfth (12th) month and before
            the first day of the ninth (9th) month before the Scheduled Delivery
            Month

*** Confidential Treatment Requested

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<PAGE>

            this payment will amount to fifty percent (50%) of the SCN price.
            These payments will be paid on the first day of the sixth (6th)
            month before the Scheduled Delivery Month.

5.3   Initial Payment

      [...***...]

5.4   Payment of Balance of the Final Contract Price

      Concurrent with each Delivery, the Buyers will, jointly and severally, pay
      to the Seller the Balance of the Final Contract Price for the applicable
      Aircraft. The Seller's receipt of the full amount of all Predelivery
      Payments and of the Balance of the Final Contract Price, including any
      amounts due under Clause 5.6, will be a condition precedent to the
      Seller's obligation to deliver such Aircraft to the Designated Buyer.

5.5   Payment Setoff

      Notwithstanding any other rights the Seller may have at contract or at
      law, the Buyers and the Seller hereby agree that should any amount
      (whether under this Agreement or under any other agreement between any
      Buyer or any of their respective Affiliates and the Seller or any of its
      Affiliates and whether at the stated maturity of such amount, by
      acceleration or otherwise) become due and payable by such Buyer or its
      Affiliates, and not be paid in full in immediately available funds on the
      date due, then the Seller will have the right to debit and apply, in whole
      or in part, the Predelivery Payments paid to the Seller by the Buyers
      hereunder against such unpaid amount. The Seller will promptly notify the
      Buyers in writing after such debiting and application.

5.6   Overdue Payments

      If any payment due the Seller is not received by the Seller on the date or
      dates agreed on between the Buyers and the Seller, the Seller will have
      the right to claim from the Buyers and the Buyers will promptly pay to the
      Seller on receipt of such claim [...***...] per annum on the amount of
      such overdue payment, to be calculated from and including the due date of
      such payment to (but excluding) the date such payment is received by the
      Seller, on the basis of a 360-day year and the actual number of days
      elapsed. The Seller's right to receive such interest will be in addition
      to any other rights of the Seller hereunder or at law.

*** Confidential Treatment Requested

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<PAGE>

5.7   Proprietary Interest

      Notwithstanding any provision of law to the contrary, none of the Buyers
      will, by virtue of anything contained in this Agreement (including,
      without limitation, the making of any Predelivery Payments hereunder, or
      any designation or identification by the Seller of a particular Aircraft
      as an Aircraft to which any of the provisions of this Agreement refer)
      acquire any proprietary, insurable or other interest whatsoever in any
      Aircraft before Delivery of and payment for such Aircraft, as provided in
      this Agreement.

5.8   Payment in Full

      The Buyers' obligation to make payments to the Seller hereunder will not
      be affected by and will be determined without regard to any setoff,
      counterclaim, recoupment, defense or other right that any Buyer may have
      against the Seller or any other person and all such payments will be made
      without deduction or withholding of any kind. Each Buyer will ensure that
      the sums received by the Seller under this Agreement will be equal to the
      full amounts expressed to be due the Seller hereunder, without deduction
      or withholding on account of and free from any and all taxes, levies,
      imposts, duties or charges of whatever nature, except that if any Buyer is
      compelled by law to make any such deduction or withholding, the Buyers
      will, jointly and severally, pay such additional amounts to the Seller as
      may be necessary so that the net amount received by the Seller after such
      deduction or withholding will equal the amounts that would have been
      received in the absence of such deduction or withholding.

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<PAGE>

6     INSPECTION

6.1   Inspection Procedures

6.1.1 All work to be carried out on the Aircraft and all materials and parts
      thereof will be open to inspection during business hours by duly
      authorized representatives of the Buyers or their designee at the
      respective works of the Associated Contractors and, if possible, at the
      works of their respective subcontractors. These representatives will have
      access to such relevant technical data as are reasonably necessary for
      this purpose (except that, if access to any part of the respective works
      where construction is in progress or materials or parts are stored is
      restricted for security reasons, the Associated Contractors will be
      allowed a reasonable time to make the items available for inspection
      elsewhere). The actual detailed inspection of the Aircraft, materials and
      parts thereof will take place only in the presence of the respective
      inspection department personnel of the Associated Contractors or their
      subcontractors. The procedures for such inspections will be agreed on with
      the Buyers before any inspection. The Seller will ensure that such
      personnel will be available at all reasonable times during business hours
      as described above.

6.1.2 All inspections, examinations and discussions with the Seller's, the
      Associated Contractors' or their respective subcontractors' engineering or
      other personnel by the Buyers and their representatives will be performed
      in such a manner as not to delay or hinder either the work to be carried
      out on the Aircraft or the proper performance of this Agreement. In no
      event will any of the Buyers or the representatives of any of them be
      permitted to inspect any aircraft other than the Aircraft. The Seller will
      not permit and will cause the Manufacturer not to permit, any
      representatives, employees, agents or personnel of any airline or customer
      of the Seller other than the Buyers to inspect, or to have access to the
      Aircraft or any designs or specifications relating thereto, without the
      prior written consent of the Buyers.

6.2   Representatives

      For the purposes of Clause 6.1, starting at a mutually agreed date until
      Delivery of the last Aircraft, the Seller will furnish free-of-charge
      secretarial assistance and suitable space, office equipment and facilities
      in or conveniently located with respect to the Delivery Location for the
      use of not more than four (4) representatives of the Buyers during the
      aforementioned period. The Seller will provide internet access, electronic
      mail, facsimile and a telephone at the Buyers' cost to be invoiced on a
      monthly basis.

6.3   The Seller will or will cause the Manufacturer to correct or otherwise
      resolve any deviations from the Specification discovered during any
      inspection or examination conducted under this Clause 6.

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7     CERTIFICATION

      Except as set forth in this Clause 7, the Seller will not be required to
      obtain any certificate or approval with respect to the Aircraft.

7.1   Type Certification

      A type certificate will have been issued by each of EASA and the FAA in
      the transport category (each, a "TYPE CERTIFICATE") prior to Delivery of
      the first Aircraft.

7.2   Export Certificate of Airworthiness

      Subject to the provisions of Clause 7.3, each Aircraft will be delivered
      to the Buyers with an Export Certificate of Airworthiness issued by the
      DGAC or EASA, as applicable, and in a condition enabling the Buyers (or an
      eligible person under then applicable law) to obtain at the time of
      Delivery a Standard Airworthiness Certificate issued pursuant to Part 21
      of the US Federal Aviation Regulations and a Certificate of Sanitary
      Construction issued by the U.S. Public Health Service Food and Drug
      Administration. However, the Seller will have no obligation to make and
      will not be responsible for any costs of alterations or modifications to
      any Aircraft to enable such Aircraft to meet FAA or U.S. Department of
      Transportation requirements for specific operation on the Buyers' routes,
      except as may be provided pursuant to Clause 7.3, whether before, at or
      after Delivery of any Aircraft.

7.3   Additional FAA Requirements

      [...***...]

7.4   Additional EASA Requirements

7.4.1 [...***...]

7.4.2 [...***...]

*** Confidential Treatment Requested

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<PAGE>

7.4.3 [...***...]

7.4.4 Notwithstanding the provisions of Clauses 7.4.3, if a Change in Law
      relates to an item of BFE or to the Propulsion Systems (including to
      engine accessories, quick engine change units or thrust reversers) the
      costs relating thereto will be borne in accordance with such arrangements
      as may be made separately between the Buyers and the manufacturer of the
      BFE or the Propulsion Systems, as applicable, and the Seller will have no
      obligation with respect thereto.

7.5   Specification Changes After Delivery

      Nothing in Clause 7.4 will require the Seller to make any changes or
      modifications to, or to make any payments or take any other action with
      respect to, any Aircraft that is Ready for Delivery before the compliance
      date of any law or regulation referred to in Clause 7.4. Any such changes
      or modifications made to an Aircraft after it is Ready for Delivery will
      be at the Buyers' expense.

*** Confidential Treatment Requested

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<PAGE>

8     BUYER'S TECHNICAL ACCEPTANCE

8.1   Technical Acceptance Process

8.1.1 Prior to Delivery, the Aircraft will undergo a technical acceptance
      process developed by the Seller, [...***...] (the "TECHNICAL ACCEPTANCE
      PROCESS"). Completion of the Technical Acceptance Process will demonstrate
      the satisfactory functioning of the Aircraft and will be deemed to
      demonstrate compliance with the applicable Specification. Should it be
      established that the Aircraft fails to complete the Technical Acceptance
      Process satisfactorily, the Seller will without hindrance from the Buyers
      be entitled to and will carry out any necessary changes to correct the
      reason for such failure and, as soon as practicable thereafter, resubmit
      the Aircraft in order to complete the Technical Acceptance Process.

8.1.2 The Technical Acceptance Process will

      (i)   start on a date notified by the Seller to the Buyers at least ten
            (10) days in advance,

      (ii)  take place at the Delivery Location,

      (iii) be carried out by the personnel of the Seller,

      (iv)  include a technical acceptance flight that will not exceed three (3)
            hours, and

      (v)   conclude in nine (9) Working Days.

8.2   Buyers' Attendance

8.2.1 The Buyers are entitled to attend and observe the Technical Acceptance
      Process.

8.2.2 If any of the Buyers attend the Technical Acceptance Process, each of them

      (i)   will comply with the reasonable requirements of the Seller, with the
            intention of completing the Technical Acceptance Process within nine
            (9) Working Days, and

      (ii)  may, collectively, have a maximum of four (4) representatives (no
            more than three (3) of whom will have access to the cockpit at any
            one time) accompany the Seller's representatives on the technical
            acceptance flight, during which such Buyers' representatives will
            comply with the instructions of the Seller's representatives.

8.2.3 If none of the Buyers attends or any of them fails to cooperate in the
      Technical Acceptance Process, the Seller will be entitled to complete the
      Technical Acceptance Process in compliance with Clause 8.1.1, without such
      Buyer's attendance, and each of

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      the Buyers will be deemed to have accepted that the Aircraft is
      functioning satisfactorily and is in compliance with the Specification, in
      all respects.

8.3   Certificate of Acceptance

      Upon successful completion of the Technical Acceptance Process, each of
      the Buyers will, on or before the Delivery Date, sign and deliver to the
      Seller a certificate of acceptance in respect of the Aircraft in the form
      of Exhibit D (the "CERTIFICATE OF ACCEPTANCE"). [...***...]

8.4   Finality of Acceptance

      The Buyers' signature of the Certificate of Acceptance for the Aircraft
      will constitute waiver by each of the Buyers of any right any of them may
      have under the Uniform Commercial Code as adopted by the State of New York
      or otherwise to revoke acceptance of the Aircraft for any reason, whether
      known or unknown to any of the Buyers at the time of acceptance.

8.5   Aircraft Utilization

      The Seller will, without payment or other liability, be entitled to use
      the Aircraft [...***...] before Delivery to obtain
      the certificates required under Clause 7. Such use will not limit the
      Buyers' obligation to accept Delivery.

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9         DELIVERY

9.1       Delivery Schedule

9.1.1     Subject to any delay contemplated by Clauses 2, 7, 8, 10 and 18, the
          Seller will have the Aircraft Ready for Delivery at the Delivery
          Location within the following months (each a "SCHEDULED DELIVERY
          MONTH").

<TABLE>
<CAPTION>
Scheduled Delivery Month                  Year                 Quantity
------------------------                  ----                 --------
<S>                                       <C>                  <C>

[...***...]
         Total
</TABLE>

9.1.2
9.1.2.1   [...***...]

9.1.2.2   [...***...]
9.1.2.3   [...***...]

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9.1.2.4   [...***...]

9.2.      The Buyers will send their representatives to the Delivery Location to
          take Delivery within seven (7) days after the date on which the
          Aircraft is Ready for Delivery.

9.2.1     The Seller will transfer title to the Aircraft to [...***...] free and
          clear of all encumbrances, provided that the Balance of the Final
          Contract Price has been paid by the Buyers, or any of them, pursuant
          to Clause 5.4 and that the Certificate of Acceptance has been signed
          and delivered to the Seller pursuant to Clause 8.3. [...***...]

9.2.2     If (i) any Buyer fails to deliver the signed Certificate of Acceptance
          to the Seller on or before the Delivery Date, or (ii) the Buyers fail
          pay the Balance of the Final Contract Price for the Aircraft to the
          Seller on the Delivery Date, then each of the Buyers will be deemed to
          have rejected Delivery wrongfully when the Aircraft was duly tendered
          pursuant to this Agreement. If such a deemed rejection arises, the
          Seller will retain title to the applicable Aircraft and the Buyers
          will, jointly and severally, indemnify and hold the Seller harmless
          against any and all costs (including but not limited to any parking,
          storage, and insurance costs) and consequences resulting from the
          Buyers' rejection, it being understood that the Seller will be under
          no duty to store, park, or otherwise protect the Aircraft. These
          rights of the Seller will be in addition to the Seller's other rights
          and remedies in this Agreement.

9.3       Flyaway

9.3.1     The Buyers and the Seller will cooperate to obtain any licenses that
          may be required by the relevant Aviation Authority for the purpose of
          exporting the Aircraft.

9.3.2     All expenses of, or connected with, flying the Aircraft from the
          Delivery Location after Delivery will be borne by the Buyers. The
          Buyers will make direct arrangements with the supplying companies for
          the fuel and oil required for all delivery flights.

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10        EXCUSABLE DELAY AND TOTAL LOSS

10.1      Scope of Excusable Delay

          Neither the Seller, the Manufacturer, the Associated Contractors, nor
          any Affiliate of any of the foregoing, will be responsible for or be
          deemed to be in default on account of delays in delivery or failure to
          deliver or otherwise in the performance of this Agreement or any part
          hereof due to causes reasonably beyond the Seller's, the
          Manufacturer's or any Associated Contractor's control or not
          occasioned by the Seller's, the Manufacturer's or any Associated
          Contractor's fault or negligence ("EXCUSABLE DELAY"), including, but
          not limited to: (i) acts of God or the public enemy, natural
          disasters, fires, floods, storms beyond ordinary strength, explosions
          or earthquakes; epidemics or quarantine restrictions; serious
          accidents; total or constructive total loss; any law, decision,
          regulation, directive or other act (whether or not having the force of
          law) of any government or of the Council of the European Union or the
          Commission of the European Union or of any national, Federal, State,
          municipal or other governmental department, commission, board, bureau,
          agency, court or instrumentality, domestic or foreign; governmental
          priorities, regulations or orders affecting allocation of materials,
          facilities or a completed Aircraft; war, civil war or warlike
          operations, terrorism, insurrection or riots; failure of
          transportation; strikes or labor troubles causing cessation, slow down
          or interruption of work; inability after due and timely diligence to
          procure materials, accessories, equipment or parts or to cause a
          subcontractor or Supplier to furnish materials, components,
          accessories, equipment or parts; general hindrance in transportation;
          (ii) [...***...]; and
          (iii) any delay caused directly or indirectly by the action or
          inaction of any Buyer.

10.2      Consequences of Excusable Delay

10.2.1    If an Excusable Delay occurs,

         (a)   the Seller will

                  (i)   notify the Buyers of such Excusable Delay as soon as
                        practicable after becoming aware of the same;

                  (ii)  not be deemed to be in default in the performance of its
                        obligations hereunder as a result of such Excusable
                        Delay;

                  (iii) not be responsible for any damages arising from or in
                        connection with such Excusable Delay suffered or
                        incurred by any of the Buyers; and

                  (iv)  subject to the provisions of Subclause 10.3 below, as
                        soon as practicable after the removal of the cause of
                        such Excusable Delay, resume performance of its
                        obligations under this Agreement and notify the Buyers
                        of the revised Scheduled Delivery Month; and

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          (b)     [...***...]

10.3      Termination on Excusable Delay

10.3.1    If any Delivery is delayed as a result of an Excusable Delay for a
          period of [...***...] after the last day of the Scheduled Delivery
          Month, then either party may terminate this Agreement with respect to
          the affected Aircraft, by giving written notice the other party
          [...***...] after the expiration of such [...***...] period.

10.3.2    If the Seller has not exercised its right to terminate pursuant to
          Subclause 10.3.1 herein and if the Seller notifies the Buyers of a
          revised Scheduled Delivery Month pursuant to Clause 10.2.1(iv), in
          respect of a delay in Delivery of an Aircraft of [...***...], then the
          Buyers may terminate this Agreement with respect to the affected
          Aircraft. Termination will be made by giving written notice to the
          other party [...***...] after the Buyers' receipt of the notice of a
          revised Scheduled Delivery Month. Any termination pursuant to this
          Clause 10.3.2 as to an Aircraft will discharge the obligations and
          liabilities of the parties hereunder with respect to such Aircraft,
          except that the Seller will [...***...] of such termination pay to an
          account designated by each of the Buyers in writing an amount equal to
          all Predelivery Payments made by the Buyers, or any of them, in
          respect of such Aircraft, provided that none of the Buyers is in
          default under this Agreement or any other agreement with the Seller
          and/or its Affiliates.

10.3.3    If this Agreement is not terminated under the terms of Clause 10.3.1
          or 10.3.2, then the Seller and the Buyers will mutually agree upon a
          new Scheduled Delivery Month after the [...***...] period referred to
          in Clause 10.3.1 or 10.3.2, and this new Scheduled Delivery Month will
          be deemed to be an amendment to the applicable Scheduled Delivery
          Month in Clause 9.1.1.

10.4      Total Loss, Destruction or Damage

          If prior to Delivery, any Aircraft is lost, destroyed or in the
          reasonable opinion of the Seller is damaged beyond economic repair
          ("TOTAL LOSS"), the Seller will notify the Buyers to this effect
          within [...***...] of such occurrence. The Seller will include in said
          notification (or as soon after the issue of the notice as such
          information becomes available to the Seller) the earliest date
          consistent with the Seller's other commitments and production
          capabilities that an aircraft to replace the Aircraft may be delivered
          to the Buyers and the Scheduled Delivery Month will be extended as
          specified in the Seller's notice to accommodate the delivery of the
          replacement aircraft. However, if the Scheduled Delivery Month is
          extended to a month [...***...], then this Agreement will terminate
          with respect to said Aircraft unless:

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          (i)       each of the Buyers notifies the Seller within [...***...]
                    of the date of receipt of the Seller's notice that it
                    desires the Seller to provide a replacement aircraft during
                    the month quoted in the Seller's notice; and

          (ii)      the parties execute an amendment to this Agreement recording
                    the variation in the Scheduled Delivery Month.

          Nothing herein will require the Seller to manufacture and deliver a
          replacement aircraft if such manufacture would require the
          reactivation of its production line for the model or series of
          aircraft that includes the Aircraft. Any termination pursuant to this
          Clause 10.4 as to a particular Aircraft will discharge the obligations
          and liabilities of the parties hereunder with respect to such
          Aircraft, except that the Seller will [...***...] of such
          termination pay to an account designated by each of the Buyers in
          writing an amount equal to all Predelivery Payments made by the
          Buyers, or any of them, in respect of such Aircraft, provided that
          none of the Buyers is in default under this Agreement or any other
          agreement with the Seller and/or its Affiliates.

10.5      REMEDIES

          THIS CLAUSE 10 SETS FORTH THE SOLE AND EXCLUSIVE REMEDY OF THE BUYERS
          FOR DELAYS IN DELIVERY OR FAILURE TO DELIVER, OTHER THAN SUCH DELAYS
          AS ARE COVERED BY CLAUSE 11, AND THE BUYER HEREBY WAIVES ALL RIGHTS TO
          WHICH IT WOULD OTHERWISE BE ENTITLED IN RESPECT THEREOF, INCLUDING,
          WITHOUT LIMITATION, ANY RIGHTS TO INCIDENTAL AND CONSEQUENTIAL DAMAGES
          OR SPECIFIC PERFORMANCE. NONE OF THE BUYERS WILL BE ENTITLED TO CLAIM
          THE REMEDIES AND RECEIVE THE BENEFITS PROVIDED IN THIS CLAUSE 10 WHERE
          THE DELAY REFERRED TO IN THIS CLAUSE 10 IS CAUSED DIRECTLY OR
          INDIRECTLY BY THE NEGLIGENCE OR FAULT OF ANY BUYER OR ITS
          REPRESENTATIVES.

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11        INEXCUSABLE DELAY

11.1      Liquidated Damages

11.1.1    If

          [...***...]

          then such delay will be termed an "INEXCUSABLE DELAY." In the event of
          an Inexcusable Delay, [...***...]

11.1.2    If

          (i)       an Aircraft is not Ready for Delivery [...***...]

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11.2      Renegotiation

          If, as a result of an Inexcusable Delay, Delivery does not occur
          [...***...] after the last day of the Scheduled Delivery Month, the
          Buyers will have the right, exercisable by written notice given by
          each of them to the Seller [...***...] to require from the Seller a
          renegotiation of the Scheduled Delivery Month for the affected
          Aircraft. Unless otherwise agreed between the Seller and the Buyers
          during such renegotiation, the said renegotiation will not prejudice
          the Buyers' right to receive liquidated damages in accordance with
          Clause 11.1.

11.3      Termination

          If, as a result of an Inexcusable Delay, Delivery does not or cannot
          occur [...***...] and the parties have not renegotiated the Delivery
          Date pursuant to Clause 11.2, then the Buyers collectively, on the one
          hand, and the Seller, on the other, will have the right, exercisable
          by written notice to the other party, given [...***...] to terminate
          this Agreement in respect of the affected Aircraft. In the event of
          termination, neither party will have any claim against the other,
          except that the Seller will pay to an account designated in a writing
          signed by each of the Buyers any amounts due pursuant to Clause 11.1
          and will pay such account [...***...]

11.4      Setoff Payments

          Notwithstanding anything to the contrary contained herein, before
          being required to make any payments under Clauses 11.1 or 11.3 above,
          the Seller will have the right to apply any and all sums previously
          paid by the Buyers, or any of them, to the Seller with respect to an
          Aircraft as to which this Agreement has been terminated to the payment
          of any other amounts that any Buyer or any Affiliate of a Buyer owes
          to the Seller or any Affiliate thereof under any agreement between
          them.

11.5      REMEDIES

          THIS CLAUSE 11 SETS FORTH THE SOLE AND EXCLUSIVE REMEDY OF THE BUYERS
          FOR DELAYS IN DELIVERY OR FAILURE TO DELIVER, OTHER THAN SUCH DELAYS
          AS ARE COVERED BY CLAUSE 10, AND EACH OF THE BUYERS HEREBY WAIVES ALL
          RIGHTS TO WHICH IT WOULD OTHERWISE BE ENTITLED IN RESPECT THEREOF,
          INCLUDING WITHOUT LIMITATION ANY RIGHTS TO INCIDENTAL AND
          CONSEQUENTIAL DAMAGES OR SPECIFIC PERFORMANCE. NONE OF THE BUYERS WILL
          BE ENTITLED TO CLAIM THE REMEDIES AND RECEIVE THE BENEFITS PROVIDED IN
          THIS

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          CLAUSE 11 WHERE THE DELAY REFERRED TO IN THIS CLAUSE 11 IS CAUSED BY,
          DIRECTLY OR INDIRECTLY, THE NEGLIGENCE OR FAULT OF ANY BUYER OR ITS
          REPRESENTATIVES.

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12        WARRANTIES AND SERVICE LIFE POLICY

          The Seller represents and warrants that the Manufacturer has provided
          to the Seller the Warranty, Service Life Policy, Supplier Warranties
          and Interface Commitment with respect to the Aircraft that are
          reproduced below between the words QUOTE and UNQUOTE, subject to the
          terms, conditions, limitations and restrictions (including, but not
          limited to, the Exclusivity of Warranties and General Limitations of
          Liability and Duplicate Remedies provisions) set forth below. The
          Seller hereby assigns to the Buyers, and each of the Buyers hereby
          accepts, all of the Seller's rights and obligations as the "Buyer"
          under the said Warranty, Service Life Policy, Supplier Warranties and
          Interface Commitment, and the Seller subrogates the Buyers to all such
          rights and obligations in respect of the Aircraft. The Seller hereby
          warrants to the Buyers that (i) it has all requisite authority to make
          the foregoing assignment to and to effect the foregoing subrogation in
          favor of the Buyers, (ii) such assignment and subrogation are
          effective to confer on the Buyers all of the foregoing rights and
          obligations of the Seller, (iii) the provisions so assigned are in
          full force and effect and have not been amended prior to the date
          hereof, and (iv) the Seller will not enter into any amendment of the
          provisions so assigned without the prior written consent of each of
          the Buyers.

QUOTE

12.1      WARRANTY

12.1.1    Nature of Warranty

          Subject to the limitations and conditions hereinafter provided, and
          except as provided in Clause 12.1.2, the Seller warrants to the Buyers
          that each Aircraft and each Warranted Part will at the time of
          Delivery hereunder be free from defects:

          (i)       in material,

          (ii)      in workmanship, including, without limitation, processes of
                    manufacture,

          (iii)     in design (including, without limitation, selection of
                    materials parts and components) having regard to the state
                    of the art at the date of such design, and

          (iv)      arising from failure to conform to the Specification, except
                    as to immaterial deviations from those portions of the
                    Specification that are expressly stated in the Specification
                    to be estimates or approximations or design aims.

          For the purposes of this Agreement, the term "WARRANTED PART" will
          mean any Seller proprietary component, equipment, accessory or part
          that (a) is installed on or incorporated into an Aircraft at Delivery,
          (b) is manufactured to the detail

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          design of the Seller or a subcontractor of the Seller and (c) bears a
          part number of the Seller at the time of Delivery.

12.1.2    Exceptions

          The warranties set forth in Clause 12.1.1 will not apply to Buyer
          Furnished Equipment, Propulsion Systems, or to any component,
          accessory, equipment or part purchased by any Buyer or the Seller
          [...***...] that is not a Warranted Part, provided, however, that:

     (i)  any defect in the Seller's workmanship in respect of the installation
          of such items in or on the Aircraft, including any failure by the
          Seller to conform to the installation instructions of the
          manufacturers of such items that invalidates any applicable warranty
          from such manufacturers, will constitute a defect in workmanship for
          the purpose of this Clause 12.1 and be covered by the warranty set
          forth in Clause 12.1.1(ii), and

     (ii) any defect inherent in the Seller's design of the installation,
          considering the state of the art at the date of such design, that
          impairs the use or function of such items will constitute a defect in
          design for the purposes of this Clause 12.1 and be covered by the
          warranty set forth in Clause 12.1.1(iii).

12.1.3    Warranty Periods

          The warranties described in Clauses 12.1.1 and 12.1.2 hereinabove will
          be limited to those defects that become apparent within [...***...]
          after Delivery of the affected Aircraft, (the "WARRANTY PERIOD").

12.1.4.1  Limitations of Warranty

          (i)  The Buyers' remedy and the Seller's obligation and liability
               under Clauses 12.1.1 and 12.1.2 are limited to, at the Seller's
               expense and option, the repair, replacement or correction of, or
               the supply of modification kits rectifying the defect to any
               defective Warranted Part, [...***...] However, the Seller may
               furnish a credit to the Buyers, jointly, for the future purchase
               of goods and services (not including Aircraft) equal to the price
               at which the Buyers are then entitled to acquire a replacement
               for the defective Warranted Part.

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            (ii)  [...***...]

            (iii) [...***...]

12.1.5      Cost of Inspection

            (i)   In addition to the remedies set forth in Clauses 12.1.4(i) and
                  12.1.4(ii), the Seller will reimburse the direct labor costs
                  spent by the Buyers in performing inspections of the Aircraft
                  that are conducted:

                  (a)   to determine whether a defect exists in any Warranted
                        Part within the Warranty Period; or

                  (b)   pending the Seller's provision of a corrective technical
                        solution.

            (ii)  The Seller's liability under Clause 12.1.5(i) is subject to
                  the following conditions:

                  (a)   such inspections are recommended by a Seller Service
                        Bulletin to be performed within the Warranty Period;

                  (b)   the inspections are not performed during a scheduled
                        maintenance check recommended by the Seller's
                        Maintenance Planning Document; the labor rate for the
                        reimbursements will be the In-House Warranty Labor Rate,
                        and

            (iii) [...***...]

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12.1.5      Warranty Claim Requirements

            The Buyers' remedy and the Seller's obligation and liability under
            this Clause 12.1, with respect to each claimed defect, are subject
            to the following conditions precedent:

            (i)   the existence of a defect covered by the provisions of this
                  Clause 12.1,

            (ii)  the defect becomes apparent within the Warranty Period, except
                  as provided in Clause 12.1.4(iii),

            (iii) a Buyer submits to the Seller evidence reasonably satisfactory
                  to the Seller that the claimed defect is due to a matter
                  covered under the provisions of this Clause 12, and that such
                  defect did not result from any act or omission of any of the
                  Buyers, including but not limited to, any failure to operate
                  and maintain the affected Aircraft or part thereof in
                  accordance with the standards set forth in Clause 12.1.11 or
                  from any act or omission of any third party,

            (iv)  a Buyer returns as soon as practicable the Warranted Part
                  claimed to be defective to the repair facilities designated by
                  the Seller, unless the Buyers elect to repair a defective
                  Warranted Part in accordance with the provisions of Clause
                  12.1.8,

            (v)   the Seller receives a "WARRANTY CLAIM" complying with the
                  provisions of Clause 12.1.7(v).

12.1.7      Warranty Administration

            The warranties set forth in Clause 12.1 will be administered as
            hereinafter provided:

            (i)   Claim Determination. Determination as to whether any claimed
                  defect in any Warranted Part entitles the Buyers to a remedy
                  under this Clause 12.1 will be made by the Seller, in
                  consultation with the Buyers, and will be based on claim
                  details, reports from the Seller's regional representative,
                  historical data logs, inspections, tests, findings during
                  repair, defect analysis and other relevant documents and
                  information.

            (ii)  Transportation Costs. [...***...]

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                  [...***...]

            (iii) [...***...]

                  [...***...]

            (iv)  [...***...]

                  [...***...]

            (v)   [...***...]

                  (a)   Description of the defect and any action taken

                  (b)   Date of incident and/or removal

                  (c)   Description of the Warranted Part claimed to be
                        defective

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                  (d)   Part number

                  (e)   Serial number (if applicable)

                  (f)   Position on Aircraft, according to Catalog Sequence
                        Number of the Illustrated Parts Catalog, Aircraft
                        Maintenance Manual, Component Maintenance Manual or
                        Structural Repair Manual, as applicable

                  (g)   Total flying hours or calendar times, as applicable, at
                        the date of appearance of a defect

                  (h)   Time since last shop visit at the date of appearance of
                        defect

                  (i)   Manufacturer's serial number (MSN) of the Aircraft
                        and/or its registration number

                  (j)   Aircraft total flying hours and/or number of landings at
                        the date of appearance of defect

                  (k)   Claim number

                  (l)   Date of claim

                  (m)   Date of delivery of an Aircraft or Warranted Part to the
                        Buyer

            Warranty Claims are to be addressed as follows:

            Airbus
            Customer Services Directorate
            Warranty Administration
            Rond-Point Maurice Bellonte
            B.P. 33
            F-31707 Blagnac Cedex, France

      (vi)  Replacements. Replacements made pursuant to this Clause 12.1 will be
            made within the lead time defined in the Seller's Spare Parts Price
            Catalog. [...***...]. Replaced components, equipment,
            accessories or parts will become the Seller's property.

            Title to and risk of loss of any Aircraft, component, accessory,
            equipment or part returned by any of the Buyers to the Seller will
            at all times remain with such Buyer, except that (i) when the Seller
            has possession of a returned Aircraft, component, accessory,
            equipment or part to which any of the Buyers has title, the Seller
            will have such responsibility therefor as is chargeable by law to a
            bailee for hire, but the Seller will not be liable for loss of use,
            and (ii) title to and risk of loss of a returned component,
            accessory, equipment or part will pass to the Seller on shipment by
            the Seller to a Buyer of any item furnished by the Seller to such
            Buyer as a replacement therefor or on the Seller's issuance of a
            credit with respect thereto. Upon the Seller's shipment to a Buyer
            of any replacement component, accessory, equipment or part provided
            by the Seller pursuant to this Clause 12.1,

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        title to and risk of loss of such component, accessory, equipment or
        part will pass to such Buyer.

        (vii)   Seller's Acceptance and Rejection. [...***...] The Seller will
                provide reasonable written substantiation in case of rejection
                of a Warranty Claim. The Buyers will pay the Seller (a)
                reasonable inspection and test charges incurred by the Seller in
                connection with the investigation and processing of a rejected
                Warranty Claim, [...***...] and (b) all costs incurred by the
                Seller including transportation to the ANACS Spares Center in
                Ashburn, VA, insurance, and any other associated costs.
                [...***...]

        (viii)  Inspection. The Seller will have the right to inspect the
                affected Aircraft and documents and other records relating
                thereto in the event of any claim under this Clause 12.1 on
                reasonable prior written notice to the Buyers and such
                inspection will not unreasonably interfere with the Buyers'
                operation and personnel.

12.1.8  In-house Warranty

        (i)     Authorization. Each of the Buyers is hereby authorized to repair
                Warranted Parts, subject to the terms of this Clause 12.1.8
                ("IN-HOUSE WARRANTY REPAIR"). [...***...], such Buyer will
                notify the Resident Customer Support Representative of its
                decision to perform any In-house Warranty Repairs before such
                repairs are commenced. Such Buyer's notice will include
                sufficient detail regarding the defect, estimated or actual
                labor hours and material, as applicable, to allow the Seller to
                ascertain the reasonableness of the estimate. [...***...] The
                Seller will use reasonable efforts to ensure a prompt response
                and will not unreasonably withhold authorization.

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        (ii)    Conditions of Authorization. The Buyers will be entitled to the
                benefits under this Clause 12.1.8 for repair of Warranted Parts:

                [...***...]

        (iii)   Seller's Rights. The Seller will have the right to require the
                delivery to it of any Warranted Part, or any part removed
                therefrom that is claimed to be defective, if, in the Seller's
                judgment, the nature of the claimed defect requires technical
                investigation. Such delivery will be subject to the provisions
                of Clause 12.1.7(ii).

        Subject to applicable safety rules, the Seller will have the right to
        have a representative present as an observer during the disassembly,
        inspection and testing of any Warranted Part claimed to be defective.
        Such representatives will not unreasonably interfere with the Buyers'
        operation and personnel.

        (iv)    In-house Warranty Claim Substantiation. Claims for In-house
                Warranty Repair credit will comply with the requirements in
                Warranty Claims under Clause 12.1.6(v) and in addition, to the
                extent ascertainable, will include:

                (a)     A report of technical findings with respect to the
                        defect

                (b)     For parts required to remedy the defect

                        -       part numbers,

                        -       serial numbers (if applicable),

                        -       description of the parts,

                        -       quantity of parts,

                        -       unit price of parts,

                        -       related Seller's or third party's invoices (if
                                applicable),

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                        -       total price of parts

                (c)     Detailed number of labor hours

                (d)     In-house Warranty Labor Rate

                (e)     Total claim amount

        (v)     Credit. The Buyers' sole remedy, and the Seller's sole
                obligation and liability, in respect of In-house Warranty Repair
                claims, will be a credit to the Buyers' account. Such credit
                will be equal to the sum of the direct labor cost expended in
                performing such repair and the direct cost of materials
                incorporated in the repair. Such costs will be determined as set
                forth below.

                (a)     To determine direct labor costs, only the labor hours
                        spent on access, disassembly, inspection, repair,
                        reassembly, and final inspection and test (including
                        flight tests necessary to complete such repair) of the
                        Warranted Part alone will be counted. The hours required
                        for maintenance work concurrently being carried out on
                        the Aircraft or Warranted Part will not be included.

                (b)     [...***...]

                        The In-house Warranty Labor Rate is subject to
                        adjustment annually by multiplying the same by the ratio
                        ECIn/ECIb. For the purposes of this Clause 12.1.8(v)
                        only, ECIn is equal to the Labor Index defined in the
                        Seller Price Revision Formula for January of the year in
                        which the hours are spent and ECIb is equal to such
                        Labor Index for January 2005.

                (c)     Direct material costs are determined by the prices at
                        which the Buyers, or any of them, acquired such
                        replacement material, excluding any parts and materials
                        used for overhaul furnished free of charge by the
                        Seller.

        (vi)    Limitation on Credit. The Buyers will in no event be credited
                for repair costs (including labor and material) for any
                Warranted Part if such repair

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                costs exceed, in the aggregate, (x) [...***...] of
                the Seller's then current catalog price for a replacement of
                such Warranted Part or (y) those costs that would have resulted
                if repairs had been carried out at the Seller's facilities.

        The Seller will substantiate the costs referred to in Clause
        12.1.8(vi)(y) in writing on reasonable request by the Buyers.

        (vii)   Scrapped Material. Each of the Buyers may, with the agreement of
                the Resident Customer Support Representative, scrap any
                defective Warranted Parts that are beyond economic repair and
                not required for technical evaluation. If such Buyer does not
                obtain the written agreement of the Resident Customer Support
                Representative to scrap a Warranted Part, then such Buyer will
                retain such Warranted Part and any defective part removed from a
                Warranted Part during repair for a period of either one hundred
                and [...***...] after the date of completion of repair or
                [...***...] after submission of a claim for In-house Warranty
                Repair credit relating thereto, whichever is longer. Such parts
                will be returned to the Seller within [...***...] of receipt of
                the Seller's request therefor, at the Seller's expense
                (including costs relating to the fabrication of a shipping
                container specifically required for this shipment only.)

        (viii)  DISCLAIMER OF SELLER LIABILITY FOR BUYER'S REPAIR

                THE SELLER WILL NOT BE LIABLE FOR, AND EACH OF THE BUYERS WILL,
                JOINTLY AND SEVERALLY, INDEMNIFY THE SELLER AGAINST, CLAIMS OF
                ANY THIRD PARTIES FOR LOSSES DUE TO ANY DEFECT, NONCONFORMANCE
                OR PROBLEM OF ANY KIND, ARISING OUT OF OR IN CONNECTION WITH ANY
                REPAIR OF WARRANTED PARTS UNDERTAKEN BY ANY OF THE BUYERS UNDER
                THIS CLAUSE 12.1.8 OR ANY OTHER ACTIONS UNDERTAKEN BY ANY OF THE
                BUYERS UNDER THIS CLAUSE 12.1.8, WHETHER SUCH CLAIM IS ASSERTED
                IN CONTRACT OR IN TORT, OR IS PREMISED ON ALLEGED, ACTUAL,
                IMPUTED, ORDINARY OR INTENTIONAL ACTS OR OMISSIONS OF ANY BUYER
                OR THE SELLER.

12.1.9  Warranty Transferability

        The warranties provided for in this Clause 12.1 for any Warranted Part
        will accrue to the benefit of any operator other than a Buyer if the
        Warranted Part enters into the possession of such operator as a result
        of a pooling agreement between such operator and a Buyer, in accordance
        with the terms and subject to the limitations and exclusions of the
        foregoing warranties and to applicable laws or regulations.

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12.1.10 Warranty for Corrected, Replacement or Repaired Warranted Parts

        Whenever any Warranted Part that contains a defect for which the Seller
        is liable under this Clause 12.1 has been corrected, repaired or
        replaced pursuant to the terms of this Clause 12, the period of the
        Seller's warranty with respect to such corrected, repaired or
        replacement Warranted Part, will be the remaining portion of the
        original Warranty Period in respect of such corrected, repaired or
        replaced Warranted Part. If a defect is attributable to a defective
        repair or replacement by any of the Buyers, a Warranty Claim with
        respect to such defect will be rejected, notwithstanding any subsequent
        correction or repair, and will immediately terminate the remaining
        warranties under this Clause 12.1 in respect of the affected Warranted
        Part.

12.1.11 Standard Airline Operation - Normal Wear and Tear

        The Buyers' rights under this Clause 12.1 are subject to the Aircraft
        and each component, equipment, accessory and part thereof being
        maintained, overhauled, repaired and operated in accordance with FAA
        regulations and the Buyers' FAA-approved maintenance program and
        operating procedures.

        The Seller's liability under this Clause 12.1 will not extend to normal
        wear and tear nor, to the extent caused by any of the following, to:

        (i)     any Aircraft or component, equipment, accessory or part thereof
                that has been repaired, altered or modified after Delivery in a
                manner inconsistent with the requirements of the applicable
                Aviation Authority or the aircraft repair manuals, as
                applicable;

        (ii)    any Aircraft or component, equipment, accessory or part thereof
                that has been operated in a damaged state; or

        (iii)   any component, equipment, accessory or part from which the
                trademark, trade name, part or serial number or other
                identification marks have been removed.

        The limitations of the Seller's liability under this Clause 12.1.11
        resulting from causes described in Clauses 12.1.11(i) and 12.1.11(ii)
        will apply only to the extent the Seller submits reasonable evidence
        that the defect arose from or was contributed to by such causes.

12.2    SELLER SERVICE LIFE POLICY

12.2.1  Scope and Definitions

        In addition to the warranties set forth in Clause 12.1, the Seller
        agrees that, should a Failure occur in any Item (as such terms are
        defined below), then, subject to the

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        general conditions and limitations set forth in Clause 12.2.4, the
        provisions of this Clause 12.2 will apply.

        For the purposes of this Clause 12.2,

        (i)     "ITEM" means any of the Seller components, equipment,
                accessories or parts listed in Exhibit C that are installed on
                an Aircraft at any time during the period of effectiveness of
                the Service Life Policy as defined below in Clause 12.2.2;

        (ii)    "FAILURE" means any breakage of, or defect in, an Item that

                (x)     materially impairs the utility or safety of the Item,

                (y)     did not result from any breakage or defect in any other
                        Aircraft part or component or from any other extrinsic
                        force, and

                (z)     has occurred or can reasonably be expected to occur, but
                        does not necessarily occur, on a repetitive or fleetwide
                        basis.

        The Seller's obligations under this Clause 12.2 are referred to as the
        ("SERVICE LIFE POLICY")

12.2.2  Periods and Seller's Undertaking

        Subject to the general conditions and limitations set forth in Clause
        12.2.4, the Seller agrees that if a Failure occurs in an Item within
        [...***...] after the Delivery of the Aircraft on which such Item
        is installed, the Seller will, at its discretion, as promptly as
        practicable and for a price that reflects the Seller's financial
        participation as hereinafter provided:

        (i)     design and furnish to the Buyers a terminating correction for
                such Item and provide any parts required for such correction
                (including Seller designed standard parts but excluding industry
                standard parts), or

        (ii)    replace such Item.

12.2.3  Seller's Participation in the Cost

        Any part or Item that the Seller is required to furnish to the Buyers
        under this Service Life Policy will be furnished at the Seller's current
        sales price therefor, less the Seller's financial participation, which
        will be determined in accordance with the following formula:

        P =      C ( N - T ) /  N

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          where

          P:  financial participation of the Seller,

          C:  the Seller's then current sales price for the required Item or
              required Seller designed parts,

          T:  total time in months since Delivery of the Aircraft in which the
              Item subject to a Failure was originally installed, and

          N:  [...***...]

12.2.4    General Conditions and Limitations

12.2.4.1  Notwithstanding any provision of this Clause 12.2, during the Warranty
          Period, all Items will be covered by the provisions of Clause 12.1 and
          not by the provisions of this Clause 12.2.

12.2.4.2  The Buyers' remedies and the Seller's obligations and liabilities
          under this Service Life Policy are subject to compliance by the Buyers
          with the following conditions:

          (i)       The Buyers will generate maintain log books and other
                    historical records as required by the FAA, and will retain
                    the same for the duration of this Service Life Policy, with
                    respect to each Item adequate to enable the determination as
                    to whether the alleged Failure is covered by this Service
                    Life Policy and, if so, to allocate the portion of the cost
                    to be borne by the Seller in accordance with Clause 12.2.3.

          (ii)      The Buyers will keep the Seller informed, by making
                    available any relevant records upon request, of any
                    significant incidents relating to an Aircraft, howsoever
                    occurring or recorded.

          (iii)     The conditions of Clause 12.1.11 will have been complied
                    with.

          (iv)      The Buyers will implement specific structural inspection
                    programs for monitoring purposes as may be established from
                    time to time by the Seller and the Buyers. Such programs
                    will be, to the extent possible, compatible with the Buyers'
                    operational requirements and will be carried out at the
                    Buyers' expense. Reports relating thereto will be regularly
                    furnished to the Seller on a reasonable request.

          (v)       The Buyers will report in writing any breakage or defect
                    that may be covered by the Service Life Policy to the Seller
                    within [...***...] after such breakage or defect
                    becomes apparent, whether or not the same can reasonably be
                    expected to occur in any other Aircraft, and the Buyers

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                    will inform the Seller in sufficient detail about such
                    breakage or defect to enable the Seller to determine whether
                    the same is subject to this Service Life Policy.

12.2.4.3  Except as otherwise provided in this Clause 12.2, any claim under this
          Service Life Policy will be administered as provided in, and will be
          subject to the terms and conditions of, Clause 12.1.6.

12.2.4.4  If the Seller has issued a service bulletin modification applicable to
          an Aircraft, the purpose of which is to avoid a Failure, the Seller
          will offer the necessary modification kit free of charge or under a
          pro rata formula established by the Seller. If such a kit is so
          offered to the Buyers, then, in respect of such Failure and any
          Failures that could ensue therefrom, the Seller's commitment under
          this Clause 12.2 will be subject to the Buyers' incorporating such
          modification in the relevant Aircraft, within a reasonable time, as
          promulgated by the Seller and in accordance with the Seller's
          instructions.

12.2.4.5  THIS SERVICE LIFE POLICY IS NEITHER A WARRANTY, PERFORMANCE GUARANTEE,
          NOR AN AGREEMENT TO MODIFY ANY AIRCRAFT OR AIRFRAME COMPONENTS TO
          CONFORM TO NEW DEVELOPMENTS OCCURRING IN THE STATE OF AIRFRAME DESIGN
          AND MANUFACTURING ART. THE SELLER'S OBLIGATION UNDER THIS CLAUSE 12.2
          IS TO MAKE ONLY THOSE CORRECTIONS TO THE ITEMS OR FURNISH REPLACEMENTS
          THEREFOR AS PROVIDED IN THIS CLAUSE 12.2. THE BUYERS' SOLE REMEDY AND
          RELIEF FOR THE NONPERFORMANCE OF ANY OBLIGATION OR LIABILITY OF THE
          SELLER ARISING UNDER OR BY VIRTUE OF THIS SERVICE LIFE POLICY WILL BE
          IN MONETARY DAMAGES, LIMITED TO THE AMOUNT THE BUYERS REASONABLY
          EXPEND IN PROCURING A CORRECTION OR REPLACEMENT FOR ANY ITEM THAT IS
          THE SUBJECT OF A FAILURE COVERED BY THIS SERVICE LIFE POLICY AND TO
          WHICH SUCH NONPERFORMANCE IS RELATED, LESS THE AMOUNT THAT THE BUYERS
          OTHERWISE WOULD HAVE BEEN REQUIRED TO PAY UNDER THIS CLAUSE 12.2 IN
          RESPECT OF SUCH CORRECTED OR REPLACEMENT ITEM. WITHOUT LIMITING THE
          EXCLUSIVITY OF WARRANTIES AND GENERAL LIMITATIONS OF LIABILITY
          PROVISIONS SET FORTH IN CLAUSE 12.5, EACH OF THE BUYERS HEREBY WAIVES,
          RELEASES AND RENOUNCES ALL CLAIMS TO ANY FURTHER DIRECT, INCIDENTAL OR
          CONSEQUENTIAL DAMAGES, INCLUDING LOSS OF PROFITS AND ALL OTHER RIGHTS,
          CLAIMS AND REMEDIES, ARISING UNDER OR BY VIRTUE OF THIS SERVICE LIFE
          POLICY.

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12.2.5    Transferability

          The Buyers' rights under this Clause 12.2 will not be assigned, sold,
          transferred or otherwise alienated by operation of law or otherwise,
          without the Seller's prior written consent.

          Any unauthorized assignment, sale, transfer or other alienation of any
          Buyer's rights under this Service Life Policy will, as to the Aircraft
          involved, immediately void this Service Life Policy in its entirety.

12.3      SUPPLIER WARRANTIES AND SERVICE LIFE POLICIES

12.3.1    Seller's Support

          Before Delivery of the first Aircraft, the Seller will provide the
          Buyers with the warranties and service life policies that the Seller
          has obtained pursuant to the Supplier Product Support Agreements.

12.3.2.1  Supplier's Default

12.3.2.1  If any Supplier under any warranty referred to in Clause 12.3.1
          defaults in the performance of any material obligation under such
          warranty with respect to a Supplier Part, each Buyer has used its best
          efforts to enforce its rights under such warranty, and the Buyers
          submit reasonable evidence, within a reasonable time, that such
          default has occurred, then Clause 12.1 of this Agreement will apply to
          the extent it would have applied had such Supplier Part been a
          Warranted Part, to the extent the Seller can reasonably perform said
          Supplier's obligations, except that the Supplier's warranty period
          indicated in the applicable Supplier Product Support Agreement will
          apply.

12.3.2.2  If any Supplier under any service life policy referred to in Clause
          12.3.1 defaults in the performance of any material obligation under
          such service life policy with respect to a Supplier Part, each Buyer
          has used best efforts to enforce its rights under such service life
          policy, and such Buyer submits within reasonable time to the Seller
          reasonable evidence that such default has occurred, then Clause 12.2
          will apply to the extent the same would have applied had such Supplier
          Part been listed in Exhibit C, to the extent that the Seller can
          reasonably perform said Supplier's service life policy.

12.3.2.3  At the Seller's request, each Buyer will assign to the Seller, and the
          Seller will be subrogated to, all of the Buyers' rights against the
          relevant Supplier with respect to, and arising by reason of, such
          default and the Buyers will provide reasonable assistance to enable
          the Seller to enforce the rights so assigned.

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12.4      INTERFACE COMMITMENT

12.4.1    Interface Problem

          If any Buyer experiences any technical problem in the operation of an
          Aircraft or its systems, the cause of which, after due and reasonable
          investigation, is not readily identifiable by such Buyer, but which
          such Buyer reasonably believes to be attributable to the design
          characteristics of one or more components of the Aircraft and/or its
          systems (an "INTERFACE PROBLEM"), the Seller will, if requested by
          such Buyer, and without additional charge to any Buyer, promptly
          conduct or have conducted an investigation and analysis of such
          problem to determine, if possible, the cause or causes of the problem
          and to recommend such corrective action as may be feasible, provided,
          however, that if the Seller determines, after such investigation, that
          the Interface Problem was due to or caused by any act or omission of
          any Buyer in its performance of its obligations hereunder, the Buyers
          will, jointly and severally, pay to the Seller all reasonable costs
          and expenses incurred by the Seller during such investigation. The
          Buyers will furnish to the Seller all data and information in the
          possession of any of them relevant to the Interface Problem and will
          reasonably cooperate with the Seller in the conduct of the Seller's
          investigations and such tests as may be required. At the conclusion of
          such investigation the Seller will promptly advise the Buyers in
          writing of the Seller's opinion as to the cause or causes of the
          Interface Problem and the Seller's recommendations as to corrective
          action.

12.4.2    Seller's Responsibility

          If the Seller determines that the Interface Problem is primarily
          attributable to the design of a Warranted Part, the Seller will, if
          requested by a Buyer, take prompt action to correct the design of such
          Warranted Part, pursuant to the terms and conditions of Clause 12.1.

12.4.3    Supplier's Responsibility

          If the Seller determines that the Interface Problem is primarily
          attributable to the design of any Supplier Part, the Seller will at
          any Buyer's request, assist such Buyer in processing any warranty
          claim such Buyer may have against the manufacturer of such Supplier
          Part. [...***...]

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12.4.4    Joint Responsibility

          If the Seller determines that the Interface Problem is attributable
          partially to the design of a Warranted Part and partially to the
          design of any Supplier Part, the Seller will, if requested by a Buyer,
          seek a solution to the Interface Problem through cooperative efforts
          of the Seller and any Supplier(s) involved. The Seller will promptly
          advise the Buyers of any corrective action proposed by the Seller and
          any such Supplier(s). Such proposal will be consistent with any then
          existing obligations of the Seller hereunder and of any such Supplier
          to the Buyers. Such corrective action, unless reasonably rejected by
          the Buyers, will constitute full satisfaction of any claim any of the
          Buyers may have against either the Seller or any such Supplier(s) with
          respect to such Interface Problem, unless such corrective action does
          not resolve the Interface Problem.

12.4.5    General

12.4.5.1  All requests under this Clause 12.4 will be directed both to the
          Seller and the affected Suppliers.

12.4.5.2  Except as specifically set forth in this Clause 12.4, this Clause 12.4
          will not be deemed to impose on the Seller any obligations not
          expressly set forth elsewhere in this Agreement.

12.4.5.3  All reports, recommendations, data and other documents furnished by
          the Seller to a Buyer pursuant to this Clause 12.4 will be deemed to
          be delivered under this Agreement and will be subject to the terms,
          covenants and conditions set forth in this Clause 12 and in Clause
          22.7.

12.5      EXCLUSIVITY OF WARRANTIES

          THIS CLAUSE 12 (INCLUDING ITS SUBPROVISIONS) SETS FORTH THE EXCLUSIVE
          WARRANTIES, EXCLUSIVE LIABILITIES AND EXCLUSIVE OBLIGATIONS OF THE
          SELLER, AND THE EXCLUSIVE REMEDIES AVAILABLE TO ANY BUYER, WHETHER
          UNDER THIS AGREEMENT OR OTHERWISE, ARISING FROM ANY DEFECT OR
          NONCONFORMITY OR PROBLEM OF ANY KIND IN ANY AIRCRAFT, COMPONENT,
          EQUIPMENT, ACCESSORY, PART, SOFTWARE, DATA OR SERVICE DELIVERED BY THE
          SELLER UNDER THIS AGREEMENT.

          EACH OF THE BUYERS RECOGNIZES THAT THE RIGHTS, WARRANTIES AND REMEDIES
          IN THIS CLAUSE 12 ARE ADEQUATE AND SUFFICIENT TO PROTECT THE BUYERS
          FROM ANY DEFECT OR NONCONFORMITY OR PROBLEM OF ANY KIND IN THE GOODS
          AND SERVICES SUPPLIED UNDER THIS AGREEMENT. EACH OF THE BUYERS HEREBY
          WAIVES, RELEASES AND RENOUNCES ALL OTHER WARRANTIES, OBLIGATIONS,
          GUARANTEES AND LIABILITIES OF

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          THE SELLER AND ALL OTHER RIGHTS, CLAIMS AND REMEDIES OF ANY BUYER
          AGAINST THE SELLER, WHETHER EXPRESS OR IMPLIED BY CONTRACT, TORT, OR
          STATUTORY LAW OR OTHERWISE, WITH RESPECT TO ANY NONCONFORMITY OR
          DEFECT OR PROBLEM OF ANY KIND IN ANY AIRCRAFT, COMPONENT, EQUIPMENT,
          ACCESSORY, PART, SOFTWARE, DATA OR SERVICE DELIVERED BY THE SELLER
          UNDER THIS AGREEMENT, INCLUDING BUT NOT LIMITED TO:

          (1)       ANY IMPLIED WARRANTY OF MERCHANTABILITY AND/OR FITNESS FOR
                    ANY GENERAL OR PARTICULAR PURPOSE;

          (2)       ANY IMPLIED OR EXPRESS WARRANTY ARISING FROM COURSE OF
                    PERFORMANCE, COURSE OF DEALING OR USAGE OF TRADE;

          (3)       ANY RIGHT, CLAIM OR REMEDY FOR BREACH OF CONTRACT;

          (4)       ANY RIGHT, CLAIM OR REMEDY FOR TORT, UNDER ANY THEORY OF
                    LIABILITY, HOWEVER ALLEGED, INCLUDING, BUT NOT LIMITED TO,
                    ACTIONS AND/OR CLAIMS FOR NEGLIGENCE, GROSS NEGLIGENCE,
                    INTENTIONAL ACTS, WILLFUL DISREGARD, IMPLIED WARRANTY,
                    PRODUCT LIABILITY, STRICT LIABILITY OR FAILURE TO WARN;

          (5)       ANY RIGHT, CLAIM OR REMEDY ARISING UNDER THE UNIFORM
                    COMMERCIAL CODE OR ANY OTHER STATE OR FEDERAL STATUTE;

          (6)       ANY RIGHT, CLAIM OR REMEDY ARISING UNDER ANY REGULATIONS OR
                    STANDARDS IMPOSED BY ANY INTERNATIONAL, NATIONAL, STATE OR
                    LOCAL STATUTE OR AGENCY;

          (7)       ANY RIGHT, CLAIM OR REMEDY TO RECOVER OR BE COMPENSATED FOR:

                        (a)   LOSS OF USE OR REPLACEMENT OF ANY AIRCRAFT,
                              COMPONENT, EQUIPMENT, ACCESSORY OR PART PROVIDED
                              UNDER THIS AGREEMENT;

                        (b)   LOSS OF, OR DAMAGE OF ANY KIND TO, ANY AIRCRAFT,
                              COMPONENT, EQUIPMENT, ACCESSORY OR PART PROVIDED
                              UNDER THIS AGREEMENT;

                        (c)   LOSS OF PROFITS AND/OR REVENUES;

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                        (d)   ANY OTHER INCIDENTAL OR CONSEQUENTIAL DAMAGE.

          THE WARRANTIES AND SERVICE LIFE POLICY PROVIDED BY THIS AGREEMENT WILL
          NOT BE EXTENDED, ALTERED OR VARIED EXCEPT BY A WRITTEN INSTRUMENT
          SIGNED BY THE SELLER AND THE BUYERS. IF ANY PROVISION OF THIS CLAUSE
          12 SHOULD FOR ANY REASON BE HELD UNLAWFUL, OR OTHERWISE UNENFORCEABLE,
          THE REMAINDER OF THIS CLAUSE 12 WILL REMAIN IN FULL FORCE AND EFFECT.

          FOR THE PURPOSE OF THIS CLAUSE 12.5, "SELLER" WILL BE UNDERSTOOD TO
          INCLUDE THE SELLER, ITS AFFILIATES, SUPPLIERS AND ASSOCIATED
          CONTRACTORS.

          [...***...]

12.6      DUPLICATE REMEDIES

          The remedies provided to the Buyers under this Clause 12 as to any
          defect in respect of the Aircraft or any part thereof are mutually
          exclusive and not cumulative. The Buyers will be entitled to the
          remedy that provides the maximum benefit to them, as the Buyers may
          elect, pursuant to the terms and conditions of this Clause 12 for any
          defect for which remedies are provided under this Clause 12 provided,
          however, that none of the Buyers will be entitled to elect a remedy
          under more than one part of this Clause 12 for the same defect. The
          Buyers' rights and remedies herein for the nonperformance of any
          obligations or liabilities of the Seller arising under these
          warranties will be in monetary damages limited to the amount the
          Buyers expend in procuring a correction or replacement for any covered
          part subject to a defect or nonperformance covered by this Clause 12,
          and none of the Buyers will have any right to require specific
          performance by the Seller.

UNQUOTE

          In consideration of the assignment and subrogation by the Seller under
          this Clause 12 in favor of the Buyers in respect of the Seller's
          rights against and obligations to the Manufacturer under the
          provisions quoted above, each of the Buyers hereby accepts such
          assignment and subrogation and agrees to be bound by all of the terms,
          conditions and limitations therein contained, specifically including,
          without

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          limitation, the Exclusivity of Warranties and General Limitations of
          Liability provisions and Duplicate Remedies provisions.

          THIS CLAUSE 12 (INCLUDING ITS SUBPROVISIONS) SETS FORTH THE EXCLUSIVE
          WARRANTIES, EXCLUSIVE LIABILITIES AND EXCLUSIVE OBLIGATIONS OF THE
          SELLER, AND THE EXCLUSIVE REMEDIES AVAILABLE TO THE BUYERS, WHETHER
          UNDER THIS AGREEMENT OR OTHERWISE, ARISING FROM ANY DEFECT OR
          NONCONFORMITY OR PROBLEM OF ANY KIND IN ANY AIRCRAFT, COMPONENT,
          EQUIPMENT, ACCESSORY, PART, SOFTWARE, DATA OR SERVICE DELIVERED BY THE
          SELLER UNDER THIS AGREEMENT.

          EACH OF THE BUYERS RECOGNIZES THAT THE RIGHTS, WARRANTIES AND REMEDIES
          IN THIS CLAUSE 12 ARE ADEQUATE AND SUFFICIENT TO PROTECT THE BUYERS
          FROM ANY DEFECT OR NONCONFORMITY OR PROBLEM OF ANY KIND IN THE GOODS
          AND SERVICES SUPPLIED UNDER THIS AGREEMENT. EACH OF THE BUYERS HEREBY
          WAIVES, RELEASES AND RENOUNCES ALL OTHER WARRANTIES, OBLIGATIONS,
          GUARANTEES AND LIABILITIES OF THE SELLER AND ALL OTHER RIGHTS, CLAIMS
          AND REMEDIES OF ANY BUYER AGAINST THE SELLER, WHETHER EXPRESS OR
          IMPLIED BY CONTRACT, TORT, OR STATUTORY LAW OR OTHERWISE, WITH RESPECT
          TO ANY NONCONFORMITY OR DEFECT OR PROBLEM OF ANY KIND IN ANY AIRCRAFT,
          COMPONENT, EQUIPMENT, ACCESSORY, PART, SOFTWARE, DATA OR SERVICE
          DELIVERED BY THE SELLER UNDER THIS AGREEMENT, INCLUDING BUT NOT
          LIMITED TO:

          (1)       ANY IMPLIED WARRANTY OF MERCHANTABILITY AND/OR FITNESS FOR
                    ANY GENERAL OR PARTICULAR PURPOSE;

          (2)       ANY IMPLIED OR EXPRESS WARRANTY ARISING FROM COURSE OF
                    PERFORMANCE, COURSE OF DEALING OR USAGE OF TRADE;

          (3)       ANY RIGHT, CLAIM OR REMEDY FOR BREACH OF CONTRACT;

          (4)       ANY RIGHT, CLAIM OR REMEDY FOR TORT, UNDER ANY THEORY OF
                    LIABILITY, HOWEVER ALLEGED, INCLUDING, BUT NOT LIMITED TO,
                    ACTIONS AND/OR CLAIMS FOR NEGLIGENCE, GROSS NEGLIGENCE,
                    INTENTIONAL ACTS, WILLFUL DISREGARD, IMPLIED WARRANTY,
                    PRODUCT LIABILITY, STRICT LIABILITY OR FAILURE TO WARN;

          (5)       ANY RIGHT, CLAIM OR REMEDY ARISING UNDER THE UNIFORM
                    COMMERCIAL CODE OR ANY OTHER STATE OR FEDERAL STATUTE;

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          (6)       ANY RIGHT, CLAIM OR REMEDY ARISING UNDER ANY REGULATIONS OR
                    STANDARDS IMPOSED BY ANY INTERNATIONAL, NATIONAL, STATE OR
                    LOCAL STATUTE OR AGENCY;

          (7)       ANY RIGHT, CLAIM OR REMEDY TO RECOVER OR BE COMPENSATED FOR:

                       (a)    LOSS OF USE OR REPLACEMENT OF ANY AIRCRAFT,
                              COMPONENT, EQUIPMENT, ACCESSORY PART, SOFTWARE OR
                              DATA PROVIDED UNDER THIS AGREEMENT;

                       (b)    LOSS OF, OR DAMAGE OF ANY KIND TO, ANY AIRCRAFT,
                              COMPONENT, EQUIPMENT, ACCESSORY, PART, SOFTWARE OR
                              DATA PROVIDED UNDER THIS AGREEMENT;

                       (c)    LOSS OF PROFITS AND/OR REVENUES;

                       (d)    ANY OTHER INCIDENTAL OR CONSEQUENTIAL DAMAGE.

          THE WARRANTIES AND SERVICE LIFE POLICY PROVIDED BY THIS AGREEMENT WILL
          NOT BE EXTENDED, ALTERED OR VARIED EXCEPT BY A WRITTEN INSTRUMENT
          SIGNED BY THE SELLER AND THE BUYERS. IN THE EVENT THAT ANY PROVISION
          OF THIS CLAUSE 12 SHOULD FOR ANY REASON BE HELD UNLAWFUL, OR OTHERWISE
          UNENFORCEABLE, THE REMAINDER OF THIS CLAUSE 12 WILL REMAIN IN FULL
          FORCE AND EFFECT.

          The remedies provided to the Buyers under this Clause 12 as to any
          defect in respect of the Aircraft or any part thereof are mutually
          exclusive and not cumulative. The Buyers will be entitled to the
          remedy that provides the maximum benefit to them, as the Buyers may
          elect, pursuant to the terms and conditions of this Clause 12 for any
          defect for which remedies are provided under this Clause 12, provided,
          however, that the none of the Buyers will be entitled to elect a
          remedy under more than one part of this Clause 12 for the same defect.
          The Buyers' rights and remedies herein for the nonperformance of any
          obligations or liabilities of the Seller arising under these
          warranties will be in monetary damages limited to the amount the
          Buyers expend in procuring a correction or replacement for any covered
          part subject to a defect or nonperformance covered by this Clause 12,
          and none of the Buyers will have any right to require specific
          performance by the Seller.

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12.7        NEGOTIATED AGREEMENT

            Each of the Buyers specifically recognizes that:

            (i)   the Specification has been agreed upon after careful
                  consideration by the Buyers using their judgment as
                  professional operators of, and maintenance providers with
                  respect to, aircraft used in public transportation and as such
                  is are professionals within the same industry as the Seller;

            (ii)  this Agreement, and in particular this Clause 12, has been the
                  subject of discussion and negotiation and is fully understood
                  by the Buyers;

            (iii) the price of the Aircraft and the other mutual agreements of
                  the Buyers set forth in this Agreement were arrived at in
                  consideration of, inter alia, the provisions of this Clause
                  12, specifically including the Exclusivity of Warranties set
                  forth in Clause 12.5.

12.8        SURVIVABILITY

            [...***...]

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13.         PATENT AND COPYRIGHT INDEMNITY

            The Seller represents and warrants that the Manufacturer has
            provided to the Seller the following indemnity against patent and
            copyright infringements with respect to the Aircraft that are
            reproduced below between the words QUOTE and UNQUOTE, subject to the
            terms, conditions, limitations and restrictions (including, but not
            limited to, the Exclusivity of Warranties and General Limitations of
            Liability and Duplicate Remedies provisions) set forth below. The
            Seller hereby assigns to the Buyers, and each of the Buyers hereby
            accepts, all of the Seller's rights and obligations as the "Buyer"
            under the said indemnity against patent and copyright infringements,
            and the Seller subrogates the Buyers to all such rights and
            obligations in respect of the Aircraft. The Seller hereby warrants
            to the Buyers that (i) it has all requisite authority to make the
            foregoing assignment to and to effect the foregoing subrogation in
            favor of the Buyers, (ii) such assignment and subrogation are
            effective to confer on the Buyers all of the foregoing rights and
            obligations of the Seller, (iii) the provisions so assigned are in
            full force and effect and have not been amended prior to the date
            hereof, and (iv) the Seller will not enter into any amendment of the
            provisions so assigned without the prior written consent of each of
            the Buyers.

QUOTE

13.1        Indemnity

13.1.1      Subject to the provisions of Clause 13.2.3, the Seller will
            indemnify the Buyers from and against any damages, costs and
            expenses including legal costs (excluding damages, costs, expenses,
            loss of profits and other liabilities in respect of or resulting
            from loss of use of the Aircraft) resulting from any infringement or
            claim of infringement by the Airframe or any part or software
            installed therein at Delivery of

            (i)   any British, French, German, Spanish or U.S. patent;

            (ii)  any patent issued under the laws of any other country in which
                  any of the Buyers may lawfully operate the Aircraft, provided
                  that from the time of design of such Airframe or any part or
                  software installed therein at Delivery and until infringement
                  claims are resolved, the country of the patent and the flag
                  country of the Aircraft are both parties to:

                  (1)   the Chicago Convention on International Civil Aviation
                        of December 7, 1944, and are each fully entitled to all
                        benefits of Article 27 thereof, or,

                  (2)   the International Convention for the Protection of
                        Industrial Property of March 20, 1883; and

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            (iii) in respect of computer software installed on the Aircraft, any
                  copyright, provided that the Seller's obligation to indemnify
                  will be limited to infringements in countries which, at the
                  time of infringement, are members of The Berne Union and
                  recognize computer software as a "work" under the Berne
                  Convention.

13.1.2      Clause 13.1.1 will not apply to

            (i)   Buyer Furnished Equipment;

            (ii)  the Propulsion Systems;

            (iii) Supplier Parts; or

            (iv)  software not developed by the Seller.

13.1.3      If any of the Buyers is, due to circumstances contemplated in Clause
            13.1.1, prevented from using the Aircraft (whether by a valid
            judgment of a court of competent jurisdiction or by a settlement
            arrived at among the claimant, the Seller and any Buyer), the Seller
            will at its expense either

            (i) procure for the Buyers the right to use the affected Airframe,
            part or software free of charge; or

            (ii) replace the infringing part or software as soon as possible
            with a non-infringing substitute.

13.2        Administration of Patent and Copyright Indemnity Claims

13.2.1      If any Buyer receives a written claim or a suit is threatened or
            begun against such Buyer for infringement of a patent or copyright
            referred to in Clause 13.1, such Buyer will

            (i)   forthwith notify the Seller, giving particulars thereof;

            (ii)  furnish to the Seller all data, papers and records within the
                  Buyers' control or possession relating to such patent or
                  claim;

            (iii) refrain from admitting any liability or making any payment, or
                  assuming any expenses, damages, costs or royalties, or
                  otherwise acting in a manner prejudicial to the defense or
                  denial of the suit or claim, it being agreed that nothing in
                  this Clause 13.2.1(iii) will prevent a Buyer from paying the
                  sums that may be required to obtain the release of the
                  Aircraft, provided that payment is accompanied by a denial of
                  liability and is made without prejudice;

            (iv)  fully cooperate with, and render all assistance to, the Seller
                  as may be pertinent to the defense or denial of the suit or
                  claim; and

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            (v)   act to mitigate damages and/or to reduce the amount of
                  royalties that may be payable, and act to minimize costs and
                  expenses.

13.2.2.1    The Seller will be entitled either in its own name or on behalf of
            each of the Buyers to conduct negotiations with the party or parties
            alleging infringement and may assume and conduct the defense or
            settlement of any suit or claim in the manner that, in the Seller's
            opinion, it deems proper.

13.2.3      The Seller's liability hereunder will be conditional on the strict
            and timely compliance by each of the Buyers with the terms of this
            Clause and is in lieu of any other liability to any Buyer, whether
            express or implied, that the Seller might incur at law as a result
            of any infringement or claim of infringement of any patent or
            copyright.

UNQUOTE

      In consideration of the assignment and subrogation by the Seller under
      this Clause 13 in favor of the Buyers in respect of the Seller's rights
      against and obligations to the Manufacturer under the provisions quoted
      above, each of the Buyers hereby accepts such assignment and subrogation
      and agrees to be bound by all of the terms, conditions and limitations
      therein contained (specifically including, without limitation, the waiver,
      release and renunciation provision).

      THE INDEMNITY PROVIDED IN THIS CLAUSE 13 AND THE OBLIGATIONS AND
      LIABILITIES OF THE SELLER UNDER THIS CLAUSE 13 ARE EXCLUSIVE AND IN
      SUBSTITUTION FOR, AND EACH OF THE BUYERS HEREBY WAIVES, RELEASES AND
      RENOUNCES ALL OTHER INDEMNITIES, WARRANTIES, OBLIGATIONS, GUARANTEES AND
      LIABILITIES ON THE PART OF THE SELLER AND RIGHTS, CLAIMS AND REMEDIES OF
      ANY BUYER AGAINST THE SELLER, EXPRESS OR IMPLIED, ARISING BY LAW OR
      OTHERWISE (INCLUDING WITHOUT LIMITATION ANY OBLIGATION, LIABILITY, RIGHT,
      CLAIM OR REMEDY ARISING FROM OR WITH RESPECT TO LOSS OF USE OR REVENUE OR
      CONSEQUENTIAL DAMAGES), WITH RESPECT TO ANY ACTUAL OR ALLEGED PATENT
      INFRINGEMENT OR THE LIKE BY ANY AIRFRAME, PART OR SOFTWARE INSTALLED
      THEREIN AT DELIVERY, OR THE USE OR SALE THEREOF, PROVIDED THAT, IN THE
      EVENT THAT ANY OF THE AFORESAID PROVISIONS SHOULD FOR ANY REASON BE HELD
      UNLAWFUL OR OTHERWISE INEFFECTIVE, THE REMAINDER OF THIS CLAUSE WILL
      REMAIN IN FULL FORCE AND EFFECT. THIS INDEMNITY AGAINST PATENT AND
      COPYRIGHT INFRINGEMENTS WILL NOT BE EXTENDED, ALTERED OR VARIED EXCEPT BY
      A WRITTEN INSTRUMENT SIGNED BY THE SELLER AND THE BUYERS.

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14          TECHNICAL DATA AND SOFTWARE SERVICES

            The Seller will make available or will cause the Seller's designee
            ANACS to make available to the Buyers the Technical Data and certain
            additional services under the terms and conditions set forth in this
            Clause 14.

14.1        Supply

            The Technical Data will be supplied in the English language using
            the aeronautical terminology in common use.

            Range, form, type, format, Air Transport Association ("ATA")
            compliance or non-compliance, quantity and delivery schedule of the
            Technical Data to be provided under this Agreement are covered in
            Exhibit F. [...***...]

            The Buyers will not receive compensation or credits of any kind for
            return of unused or partially used Technical Data.

14.2        Aircraft Identification for Technical Data

14.2.1      For Technical Data customized to the Aircraft, the Buyers agree to
            the allocation of fleet serial numbers ("FSN(S)") in the form of
            block of numbers selected in the range from 001 to 999.

14.2.2      The sequence will not be interrupted except if two (2) different
            Propulsion Systems or two (2) different Aircraft models are
            selected.

14.2.3      The Buyers will indicate to the Seller the FSNs allocated to each
            Aircraft corresponding to the Aircraft rank in the delivery schedule
            set forth in Clause 9.1.1 not later than twenty-four (24) months
            prior to the Scheduled Delivery Month for the first Aircraft to be
            delivered hereunder. The allocation of such FSNs to such Aircraft
            will not constitute any proprietary, insurable or other interest of
            any Buyer in any Aircraft prior to its Delivery.

14.3        Integration of Equipment Data

14.3.1      Supplier Equipment

            If necessary for the understanding of the affected systems,
            information relating to Supplier Equipment that is installed on the
            Aircraft by the Seller, will be introduced free of charge into the
            first issue, subsequent to the installation of the Supplier
            equipment of the customized Technical Data supplied to the Buyers,
            provided Clause 14.3.2.2 is complied with (the "FIRST ISSUE").

*** Confidential Treatment Requested

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14.3.2      Buyer Furnished Equipment

14.3.2.1    The Seller will introduce BFE data, for equipment installed on the
            Aircraft by the Seller, into the customized Technical Data at no
            additional charge to the Buyers for the First Issue, provided such
            data are provided in accordance with the conditions set forth in
            Clauses 14.3.2.2 through 14.3.2.5.

14.3.2.2    [...***...]

14.3.2.3    The BFE data will comply with applicable revision of the ATA 2200
            Specification applicable to the corresponding aircraft type.
            Subsequent revisions of the ATA specification will be considered as
            applicable.

14.3.2.4    The Buyers and the Seller will agree on the requirements for the
            provision to the Seller of BFE data for "on-aircraft maintenance."
            These requirements include but are not limited to timeframe, media
            and format, to facilitate the efficient, expedited and economic
            integration of BFE data into Technical Data.

14.3.2.5    The BFE data will be delivered in digital format and/or in Portable
            Document Format, as agreed between the Buyers and the Seller.

14.3.2.6    All costs related to the delivery to the Seller of BFE data will be
            borne by the Buyers.

14.3.2.7    Clause 14.3.2 will apply to the BFE data provided by the Seller
            under the terms of Clause 18.1.3.

14.4        Delivery

14.4.1      The Technical Data are delivered on-line and/or off-line, as set
            forth in Exhibit F.

14.4.2      For Technical Data delivered off-line, the Technical Data and
            corresponding revisions will be sent to one address only. The Buyers
            will specify such address.

14.4.3      Packing and shipment of the Technical Data and their revisions will
            be carried out by the quickest transportation methods. Shipment will
            be FCA Toulouse, France, FCA Hamburg, Germany, and/or FCA Ashburn,
            VA, USA.

14.4.4      The delivery schedule of the First Issue will be phased as mutually
            agreed to correspond with Aircraft deliveries. The Buyers agree to
            provide forty (40) days' notice when requesting a change to the
            delivery schedule.

***         Confidential Treatment Requested

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14.4.5      The Buyers will be responsible for coordinating with and satisfying
            the requirements of the FAA for Technical Data. Reasonable
            quantities of Technical Data will be supplied by the Seller for
            delivery to the FAA at no charge to the Buyer, FCA Toulouse, France,
            FCA Hamburg, Germany, and/or FCA Ashburn, VA, USA.

14.4.6      [...***...]

14.5        Revision Service

            Unless otherwise specifically stated, revision service will be
            provided on a free-of-charge basis for a period of one (1) year
            after Delivery of the last Aircraft. Thereafter revision service
            will be provided at the standard conditions set forth in the then
            current ANACS Customer Services Catalog.

14.6        Service Bulletins Incorporation

            During the period of revision service and upon the Buyers' request
            for incorporation, which will be made [...***...] after issuance of
            a Service Bulletin, Seller's Service Bulletin information will be
            incorporated into the Technical Data for the Aircraft after formal
            notification by any Buyer of its intention to accomplish a Service
            Bulletin. The split effectivity for a Service Bulletin will remain
            in the Technical Data until notification from the Buyers that
            accomplishment has been completed on all the applicable Aircraft,
            except that for the Flight Manual, Configuration Deviation List,
            Weight and Balance Manual and the MMEL only the pre- or post-Service
            Bulletin status will be shown.

14.7        Future Developments

            The Seller will continuously monitor technological developments and
            apply them to data and document production and methods of
            transmission where beneficial and economical. The Buyers agree to
            give reasonable consideration to any new development proposed by the
            Seller for implementation.

14.8        Technical Data Familiarization

            Upon request by the Buyers, the Seller will provide a one (1) week
            Technical Data familiarization training at the Seller's or at the
            facilities of one of the Buyers. If such familiarization is
            conducted at a Buyer's facilities, the Buyers will reimburse the
            Seller for all air travel or will provide free of charge air travel

*** Confidential Treatment Requested

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            (business class for international travel and coach for domestic) to
            and from the nearest point on any Buyer's network and living
            expenses of the representatives of the Seller conducting such
            familiarization training.

14.9        Customer Originated Changes

14.9.1      Data on Customer Originated Changes may be incorporated into the
            following Technical Data when customized to the Buyers:

            -     Aircraft Maintenance Manual

            -     Illustrated Parts Catalog

            -     Trouble Shooting Manual

            -     Aircraft Wiring Manual

            -     Aircraft Schematics Manual

            -     Aircraft Wiring Lists

            -     Flight Crew Operating Manual

            -     Quick Reference Handbook

14.9.2      COC data will be developed by the Buyers according to the "Customer
            Guide for Customer Originated Changes" issued by the Manufacturer.
            The Buyers will ensure that any such COC data is in compliance with
            the requirements of the FAA.

            COC data will be incorporated by the Seller into all affected
            customized Technical Data unless the Buyers specify in writing the
            documents into which the Buyers desire the COC to be incorporated.
            Following incorporation of the COC into the customized Technical
            Data, the relevant Technical Data will show only the aircraft
            configuration that reflects the COC data and not the configuration
            before such COC data are incorporated.

14.9.3.

            (a)   Each of the Buyers hereby acknowledges and accepts that the
                  incorporation of any COC data into the Technical Data issued
                  by the Seller will be at the Buyers' sole risk, that the
                  Seller will have no obligation to check the COC data for
                  accuracy or validity, and that the Seller will have no
                  liability whatsoever with respect to (a) the contents of any
                  COC data (including omissions or inaccuracies therein) (b) any
                  effect that the incorporation of such COC data may have on the
                  Technical Data or (c) any costs of any nature that the COC
                  data may add to subsequent Service Bulletins or modifications.

            (b)   THE SELLER HEREBY EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES
                  OR LIABILITIES, EXPRESSED OR IMPLIED, ORAL OR WRITTEN, ARISING
                  BY LAW, COURSE OF DEALING OR OTHERWISE, AND WITHOUT LIMITATION
                  ALL WARRANTIES AS TO QUALITY, OPERATION, MERCHANTABILITY,
                  FITNESS FOR ANY INTENDED PURPOSE, AND ALL OTHER

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                  CHARACTERISTICS WHATSOEVER, INCLUDING ANY OMISSIONS OR
                  INACCURACIES THEREIN, OF ANY COC DATA INCORPORATED INTO THE
                  TECHNICAL DATA ISSUED BY THE SELLER.

            (c)   Each of the Buyers will indemnify and hold the Seller harmless
                  from and against any losses (including reasonable attorneys'
                  fees) arising from claims by any third party for injury, loss
                  or damage incurred directly or indirectly as a result of the
                  incorporation of any COC data into the Technical Data issued
                  by the Seller.

            (d)   If any Buyer sells, leases or otherwise transfers any Aircraft
                  to which the COC data apply:

            (i)   the Buyers will remain fully liable for the COC data and any
                  and all effects of their incorporation, as set forth in this
                  Clause 14.9;

                  (ii)  the Seller may disclose the COC data to the subsequent
                        owner(s) or operator(s) of the transferred Aircraft;

                  (iii) it will be the sole responsibility of the Buyers to
                        notify, or cause notification to be made to, the
                        subsequent owner(s) or operator(s) of the existence of
                        the such COC data in the Technical Data applicable to
                        the corresponding Aircraft.

            The Seller hereby disclaims any and all liabilities whatsoever for
            the COC data in the event of transfer, sale or lease of any Aircraft
            to which COC data apply.

14.9.4      The incorporation of any COC will be performed under the conditions
            specified in the Seller's then current Customer Services Catalog.

14.10       Software Products

            Software Products are available to the Buyers exclusively from ANACS
            and may be licensed under the General Terms and Conditions of
            Licensing set forth in Exhibit H.

14.10.1     Performance Engineer's Programs

            (i)   In addition to the standard operational manuals, the Seller
                  will provide to the Buyers software components and databases
                  composing the Performance Engineer's Programs ("PEP") for the
                  Aircraft.

            (ii)  The license to use the PEP will be granted free of charge for
                  as long as the revisions of the PEP are free of charge in
                  accordance with Clause 14.5. At the end of such period,
                  license fees may be charged and yearly revision

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                  service for the PEP will be provided to the Buyers at the
                  standard commercial conditions set forth in the then current
                  ANACS Customer Services Catalog.

14.10.2     [...***...]

14.10.3     Airbus|World Customer Portal

14.10.3.1   The Buyers will be entitled to obtain access to a wide range of
            information and services, including Technical Data, available in the
            secure zone of Airbus's Customer Portal Airbus|World
            ("AIRBUS|WORLD"). Access will be free of charge for as long as any
            Buyer operates the Aircraft.

            Access to the secure zone of Airbus|World (the "SECURE ZONE") is
            reserved to Airbus owners and operators and is subject to the prior
            signature by each of the Buyers of the "General Terms and Conditions
            of Access to and Use of Airbus Secure Area of Customer Portal."

***  Confidential Treatment Requested

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            A description of the basic services available to the Buyers in the
            Secure Zone is set forth in the ANACS Customer Services Catalog.

14.10.3.2   On-Line Technical Data

            (i)   The Technical Data specified in Exhibit F as being provided
                  on-line will be made available to the Buyers through the
                  Secure Zone at no cost as long as revision service for such
                  Technical Data is free of charge in accordance with Clause
                  14.5.

            (ii)  The list of the Technical Data available on-line may be
                  amended from time to time.

                  For any Technical Data that are or become available on-line,
                  the Seller will notify the Buyers thereof and the Seller
                  reserves the right to discontinue other formats for such
                  Technical Data. On-line and old formats of such Technical Data
                  are to be available in parallel for a period of six (6) months
                  or one (1) revision cycle, whichever is shorter.

14.10.3.3   [...***...]

14.11       Warranties

            The Seller represents and warrants that the Manufacturer has
            provided to the Seller a warranty with respect to the Technical Data
            that is reproduced below between the words QUOTE and UNQUOTE,
            subject to the terms, conditions, limitations and restrictions
            (including, but not limited to, the Exclusivity of Warranties and
            General Limitations of Liability and Duplicate Remedies provisions)
            set forth below. The Seller hereby assigns to the Buyers, and the
            Buyers hereby accept, all of the Seller's rights and obligations as
            the "Buyer" under the said warranty, and the Seller subrogates the
            Buyers to all such rights and obligations in respect of the
            Aircraft. The Seller hereby warrants to the Buyers that (i) it has
            all requisite authority to make the foregoing assignment to and to
            effect the foregoing subrogation in favor of the Buyers, (ii) such
            assignment and subrogation are effective to confer on the Buyers all
            of the foregoing rights and obligations of the Seller, (iii) the
            provisions so assigned are in full force and effect and have not
            been amended prior to the date hereof and (iv) the Seller will not
            enter into any amendment of the provisions so assigned without the
            prior written consent of each of the Buyers.

QUOTE

14.11.1     The Seller warrants that the Technical Data (exclusive of COC) are
            prepared in accordance with the state of art at the date of their
            conception. SHOULD ANY

*** Confidential Treatment Requested

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            TECHNICAL DATA PREPARED BY THE SELLER CONTAIN ANY NONCONFORMITY OR
            DEFECT, THE SOLE AND EXCLUSIVE LIABILITY OF THE SELLER WILL BE TO
            TAKE ALL REASONABLE AND PROPER STEPS, AT ITS OPTION, TO CORRECT OR
            REPLACE SUCH TECHNICAL DATA.

14.11.2     THE WARRANTIES, OBLIGATIONS AND LIABILITIES OF THE SELLER AND/OR ITS
            SUPPLIERS AND REMEDIES OF THE BUYERS SET FORTH IN THIS CLAUSE 14 ARE
            EXCLUSIVE AND IN SUBSTITUTION FOR, AND EACH OF THE BUYERS HEREBY
            WAIVES, RELEASES AND RENOUNCES ALL OTHER WARRANTIES, OBLIGATIONS AND
            LIABILITIES OF THE SELLER AND/OR ITS SUPPLIERS AND RIGHTS, CLAIMS
            AND REMEDIES OF ANY OF THE BUYERS AGAINST THE SELLER, ITS SUPPLIERS
            AND/OR THEIR INSURERS, EXPRESS OR IMPLIED, ARISING BY LAW OR
            OTHERWISE, WITH RESPECT TO ANY NONCONFORMITY OR DEFECT IN ANY
            TECHNICAL DATA DELIVERED UNDER THIS AGREEMENT, INCLUDING BUT NOT
            LIMITED TO:

            (A)   ANY WARRANTY AGAINST HIDDEN DEFECTS

            (B)   ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS;

            (C)   ANY IMPLIED WARRANTY ARISING FROM COURSE OF PERFORMANCE,
                  COURSE OF DEALING OR USAGE OF TRADE;

            (D)   ANY OBLIGATION, LIABILITY, RIGHT, CLAIM OR REMEDY, WHETHER
                  CONTRACTUAL OR DELICTUAL AND WHETHER OR NOT ARISING FROM THE
                  SELLER'S AND/OR ITS SUPPLIERS' NEGLIGENCE, ACTUAL OR IMPUTED;
                  AND

            (E)   ANY OBLIGATION, LIABILITY, RIGHT, CLAIM OR REMEDY FOR LOSS OR
                  DAMAGE TO ANY AIRCRAFT, COMPONENT, EQUIPMENT, ACCESSORY OR
                  PART THEREOF OR ANY TECHNICAL DATA DELIVERED HEREUNDER.

            THE SELLER AND/OR ITS SUPPLIERS WILL HAVE NO OBLIGATION OR
            LIABILITY, HOWSOEVER ARISING, FOR LOSS OF USE, REVENUE OR PROFIT OR
            FOR ANY OTHER DIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES WITH
            RESPECT TO ANY NON-CONFORMITY OR DEFECT IN ANY TECHNICAL DATA
            DELIVERED UNDER THIS AGREEMENT.

            FOR THE PURPOSES OF THIS CLAUSE 14.11.2, "THE SELLER" WILL INCLUDE
            THE SELLER, ITS AFFILIATES AND ANY OF THEIR RESPECTIVE INSURERS.

UNQUOTE

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14.12       Proprietary Rights

            All proprietary rights, including but not limited to patent, design
            and copyrights, relating to Technical Data will remain with the
            Seller and/or its Affiliates as the case may be. All Technical Data
            are supplied for the sole use by the Buyers in maintaining and
            operating the Aircraft and each of the Buyers undertakes not to
            modify, copy the contents of, or use the Technical Data to
            manufacture any parts or components of the Aircraft, save as
            explicitly permitted herein, in the Technical Data itself, or as
            otherwise expressly authorized by the Seller. These proprietary
            rights will also apply to any translation of Technical Data into a
            language or languages or medium or media that may have been
            performed or caused to be performed by any of the Buyers.

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15          SELLER REPRESENTATIVES

15.1        The Seller will provide or cause to be provided at no charge to the
            Buyers the services described in this Clause 15, at the main base of
            any of the Buyers or at other locations to be mutually agreed.

15.2        Resident Customer Support Representatives

15.2.1      The Seller will provide representatives to act in an advisory
            capacity ("RESIDENT CUSTOMER SUPPORT REPRESENTATIVE") as follows:

            (i)   The Seller will provide one or more dedicated Resident
                  Customer Support Representatives for pre-entry-into-service
                  support of the Aircraft, commencing at or prior to
                  entry-into-service of the first Aircraft for a total of
                  [...***...] man-months;

            (ii)  In addition, the Seller will provide a total of [...***...]
                  man-months of Resident Customer Support Representatives for
                  support of the A350 aircraft in the Buyers' fleet; and

            (iii) The actual number of Customer Support Representatives assigned
                  to the Buyers at any one time will not exceed [...***...].

15.2.2      The Seller will provide to the Buyers an annual written account of
            the consumed months and any remaining balance of months.

15.2.3      Should any Buyer request additional services that exceed the amounts
            set forth in Clause 15.2.1(ii), the Seller may provide additional
            service subject to the terms and conditions agreed by such Buyer and
            the Seller at the time of such request.

15.2.4      The Seller will cause similar services to be provided by the
            representatives of the Propulsion System manufacturer and by
            representatives of the Suppliers when necessary and applicable.

15.3        Customer Support Director

            The Seller will assign the services of one (1) Customer Support
            Director based in Herndon, Virginia, to liaise between the
            Manufacturer and the Buyers on product support matters after
            signature of this Agreement for as long as any Buyer operates at
            least one (1) Aircraft.

15.4        [...***...]

*** Confidential Treatment Requested

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15.5        Buyers' Service

15.5.1      From the date of arrival of the first Resident Customer Support
            Representative and Spare Parts Field Representative and until the
            duration of the assignment, the Buyers will provide free of charge,
            suitable office space, office equipment and facilities for the sole
            use of the Resident Customer Support Representative(s) in or
            conveniently near the maintenance facilities of one of the Buyers.
            The Buyers will also provide internet access, telephone, and
            facsimile connections at the Seller's cost to be invoiced on a
            monthly basis.

15.5.2      In accordance with the Buyers' regulations, the Buyers will provide
            at no charge to the Seller

            (i)   airline tickets in economy class, confirmed and guaranteed
                  between the locations mentioned above in Clause 15.1 and the
                  international airport nearest Toulouse, France, that is on any
                  Buyer's network for the Resident Customer Support
                  Representative(s) and the Spare Parts Field Representative
                  mentioned in Clause 15.2.1 and 15.4, for travel at the
                  beginning and end of the applicable assignment; and

            (ii)  when said Resident Customer Support Representative(s) are
                  assigned away from the locations mentioned above in Clause
                  15.2.1 at the Buyers' request, transportation on similar basis
                  between the said locations and the place of assignment.

15.5.3      The parties will give each other all necessary reasonable assistance
            with general administrative functions specific to their respective
            countries and procurement of the documents necessary to live and
            work there.

15.6        Temporary Assignment and Withdrawal of Resident Customer Support
            Representative

            The Seller will have the right, upon written notice to and
            communication with the Buyers, to transfer or recall any Resident
            Customer Support Representative(s) on a temporary or permanent basis
            if, in the Seller's opinion, conditions are dangerous to the
            Resident Customer Support Representative's safety or health or
            prevent the fulfillment of such Resident Customer Support
            Representative's contractual tasks. The Buyers will receive credit
            for the man-days during which any Resident Customer Support
            Representative is absent from the Buyers' facility pursuant to this
            Clause 15.

15.7        Representatives' Status

            In providing the above technical service, the Seller's employees,
            including Resident Customer Support Representative(s), the Spare
            Parts Field Representative and the Customer Support Director, are
            deemed to be acting in an

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            advisory capacity only and at no time will they be deemed to be
            acting, either directly or indirectly, as the employees or agents of
            any of the Buyers.

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16          TRAINING AND TRAINING AIDS

16.1.       General

            This Clause 16 covers the terms and conditions for the supply of
            training and training aids for the Buyers' personnel to support the
            Aircraft operation.

16.2.       Scope

16.2.1      The range and quantity of training and training aids to be provided
            free of charge under this Agreement are covered in Appendix A to
            this Clause 16. The Seller will arrange availability of such
            training and training aids in relation to the delivery schedule for
            the Aircraft set forth in Clause 9.1.1.

16.2.2      The Maintenance Training and Flight Training courses described in
            Appendix A to this Clause 16 will be provided up to two (2) years
            after Delivery of the last Aircraft.

16.2.3      Except as set forth in Appendix A to this Clause 16, no compensation
            or credit of any sort will be provided for unused or partially used
            training or training aids offered pursuant to this Clause 16.

16.3.       Training Organization / Location

16.3.1      The Seller will provide the training at the Airbus Training Center
            in Miami, Florida (the "SELLER'S TRAINING CENTER"), and/or at its
            affiliated training center in Blagnac, France (the "AFFILIATED
            TRAINING CENTER").

16.3.2      If unavailability of facilities or scheduling difficulties make
            training by the Seller impractical at the training centers listed in
            Clause 16.3.1, the Seller will ensure that the Buyers are provided
            such training at locations other than those named in Clause 16.3.1.

16.3.3      Upon the Buyers' request, the Seller may also provide certain
            training at one of the Buyers' bases, if and when practicable for
            the Seller, under terms and conditions to be mutually agreed upon.
            In this event, all additional charges listed in Clause 16.6.2 will
            be borne by the Buyers.

16.4        Training Courses

16.4.1      Training courses, as well as the minimum and maximum numbers of
            trainees per course provided for the Buyer's personnel, are defined
            in the applicable training course catalog (the "TRAINING COURSE
            CATALOG") and will be scheduled as mutually agreed upon during a
            training conference (the "TRAINING CONFERENCE") that will be held as
            soon as practicable after signature of this Agreement and no later
            than six (6) months prior to delivery of the first Aircraft.

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16.4.2      The following terms will apply when training is performed by the
            Seller:

            (i)   Training courses will be the Seller's standard courses as
                  described in the Seller's applicable Training Course Catalog
                  valid at the time of execution of the course. The Seller will
                  be responsible for all training course syllabi, training aids
                  and training equipment necessary for the organization of the
                  training courses.

            (ii)  The training curricula and the training equipment may not be
                  fully customized. However, they may be modified to include the
                  most significant aspects of the Specification as known, at the
                  latest, six (6) months prior to the date of the first training
                  course planned for the Buyers and will be configured in order
                  to obtain the relevant Aviation Authority's approval and to
                  support the Seller's training programs.

            (iii) Training data and documentation necessary for training
                  detailed in Appendix A to this Clause 16 will be
                  free-of-charge and will not be revised. Training data and
                  documentation will be marked "FOR TRAINING ONLY" and as such
                  will be supplied for the sole and express purpose of training.

            (iv)  Upon the request of the Buyers and at no charge to the Buyers,
                  the Seller will collect and pack for consolidated shipment to
                  the facility of one of the Buyers, all training data and
                  documentation of the Buyers' trainees attending training at
                  the Airbus Training Center in Miami, Florida or Blagnac,
                  France, as applicable. This training data and documentation
                  will be delivered FCA Miami International Airport. The Buyers
                  will designate in writing one Buyer to receive title to such
                  training data and documentation and title to and risk of loss
                  of the training data and documentation will pass to such Buyer
                  upon delivery.

16.4.3      If the Buyers decide to cancel or reschedule a training course, a
            minimum advance notice of sixty (60) calendar days will be required.
            Any later cancellation or change from the Buyers, when courses
            cannot be allocated to other customers, will be deducted from the
            training allowances defined herein or will be charged to the Buyers,
            as applicable.

16.4.4      The Seller will deliver, or will cause any third party training
            provider to deliver, to the trainees a certificate of completion at
            the end of any such training course. No such certificate will
            represent authority or qualification by any Aviation Authority but
            may be presented to such officials in order to obtain relevant
            formal qualification.

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16.5        Prerequisites

16.5.1      Training will be conducted in English and all training aids are
            written in English using common aeronautical terminology. Trainees
            must have the prerequisite experience set forth in Appendix B to
            this Clause 16.

            The Seller's training courses are "TRANSITION TRAINING COURSES" and
            not "AB INITIO TRAINING COURSES."

            The Buyers will be responsible for the selection of the trainees and
            for any liability with respect to the entry knowledge level of the
            trainees.

16.5.2      The Buyers will provide the Seller with an attendance list of the
            trainees for each course with the validated qualification of each
            trainee. The Seller reserves the right to verify the trainees'
            proficiency and previous professional experience. The Seller will in
            no case warrant or otherwise be held liable for any trainee's
            performance as a result of any training services provided.

16.5.3      The Seller will provide to the Buyers an "Airbus Pre-Training
            Survey", and/or the "Maintenance Training Survey", as applicable, to
            obtain the trainee's associated background. The Buyers will complete
            such survey(s) and return them to the Seller at least two (2) months
            prior to the start of the training course.

16.5.4      If the Buyers make a change to any trainee attendance list within
            the two (2) month period stated in Clause 16.5.3, the Buyers will
            immediately inform the Seller thereof and send the Seller on updated
            Airbus Pre-Training Survey and/or Maintenance Training Survey
            reflecting requested information for the replacement trainee(s).

16.6.       Logistics

16.6.1      Trainees

            (a)   When training is done at the Airbus Training Center in Miami,
                  Florida, the Seller will provide a free-of-charge rental car
                  for all of the Buyers' trainees for the duration of the
                  training course on the basis of one (1) rental car per four
                  (4) maintenance, operations and cabin attendant trainees and
                  one (1) rental car per each flight crew.

                  The Seller will provide rental cars with unlimited mileage,
                  and the Buyers will pay for gas, and fines, if any. However,
                  the Buyers will indemnify and hold the Seller harmless from
                  and against all liabilities, claims, damages, costs and
                  expenses for any injury to or death of any of the Buyer's
                  trainees occasioned during the course of such transportation.

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            (b)   When training is done at the Airbus Training Center in
                  Blagnac, France, the Seller will provide free local
                  transportation by bus for the Buyer's trainees to and from
                  designated pick up points and the training center

            (c)   Living expenses for the Buyer's trainees are to be borne by
                  the Buyers.

16.6.2      Training at External Location

            (a)   Seller's Instructors

                  If at any Buyer's request, training is provided by the
                  Seller's instructors at any location other than the Seller's
                  training centers, the Buyers will reimburse the Seller for all
                  expenses set forth in Clauses 16.6.2(b) 16.6.2(c), 16.6.2(d)
                  and 16.6.2(e) related to the assignment of such instructors
                  and their performance of the duties as aforesaid.

            (b)   Living Expenses for the Seller's Instructors

                  Such expenses, covering the entire period from day of
                  secondment to day of return to the Seller's base, will include
                  but will not be limited to lodging, food and local
                  transportation to and from the place of lodging and the
                  training course location. The Buyers will reimburse the Seller
                  for such expenses on the basis of a per diem rate
                  corresponding to the current per diem rate used by the Seller
                  for its personnel.

            (c)   Air Travel

                  The Buyers will reimburse the Seller for the transportation
                  costs of the Seller's instructors in confirmed business class
                  or in confirmed coach class, where business class is not
                  available, to and from the Buyers' designated training site
                  and the Seller's training center.

            (d)   Training Material

                  The Buyers will reimburse the Seller for the cost of shipping
                  the training material needed to conduct such courses.

            (e)   Buyers' Indemnity

                  The Buyers will be solely liable for any and all cancellation
                  or delay in the performance of the training outside of the
                  Seller's training centers that is associated with the
                  transportation provided under Clause 16.6.2(c) and will,
                  jointly and severally, indemnify and hold the Seller harmless
                  from such delay and any consequences arising there from.

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            (f)   Training Equipment Availability

                  Training equipment necessary for course performance at any
                  course location other than the Seller's training centers or
                  the facilities of the training provider selected by the Seller
                  will be provided by the Buyers in accordance with the Seller's
                  specifications.

16.7        Flight Operations Training

16.7.1      Flight Crew Training Course

            (a)   The Seller will perform a flight crew training course program
                  for the Buyers' flight crews. [...***...] The training manual
                  used will be the Seller's Flight Crew Operating Manual
                  ("FCOM"), except for the base flight training, for which the
                  Buyer's Customized FCOM will be used.

            (b)   The Buyers will use delivered Aircraft for any required
                  in-flight training. This training will not exceed one (1)
                  session of forty-five (45) minutes per pilot. When in-flight
                  crew training is performed in Blagnac, France, the Seller will
                  provide free-of-charge line maintenance, including servicing,
                  preflight checks and changing of minor components, subject to
                  conditions agreed in this Agreement.

            (c)   The Buyers will provide mutually agreed spare parts as
                  required to support said in-flight training and will provide
                  evidence of insurance coverage required under Clause 19.

            (d)   In all cases, the Buyers will bear the expenses of fuel, oil
                  and landing fees.

16.7.2      Flight Crew Line Initial Operating Experience

            (a)   In order to assist the Buyers with initial operating
                  experience after Delivery of the first Aircraft, the Seller
                  will provide to the Buyers pilot instructor(s) as described in
                  Exhibit A to this Clause 16.

            (b)   Additional pilot instructors can be provided at the Buyers'
                  expense upon conditions to be mutually agreed.

            (c)   Prior to any flight training to be performed by the Seller on
                  the Buyers' Aircraft, the Buyers will provide to the Seller
                  evidence of insurance coverage as required under Clause 19.

*** Confidential Treatment Requested

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16.7.3      Instructor Cabin Attendants' Familiarization Course

            The Seller will provide instructor cabin attendant's course(s) to
            the Buyers' cabin attendants, as described in Exhibit A to this
            Clause 16, at the Seller's Training Center.

            The instructor cabin attendants familiarization course, when
            incorporating the features of the Aircraft, will be given no earlier
            than six (6) months and no later than ninety (90) days before the
            Delivery of the first Aircraft. The instructor cabin attendants'
            familiarization course material will be provided no later than six
            (6) months before the Delivery of the first Aircraft.

16.7.4      Performance / Operations Course

            The Seller will provide performance/operations training for the
            Buyers' personnel as described in Exhibit A to this Clause 16.

            The available courses are listed in the Seller's applicable Training
            Courses Catalog.

16.7.5      Transition Type Rating Instructor Course

            The Seller will provide transition type rating instructor training
            for the Buyer's flight crew instructors as described in Exhibit A to
            this Clause 16. This course provides the Buyers' instructors with
            the training in flight instruction and synthetic instruction
            required to instruct on Airbus aircraft.

16.7.6      During any and all flights performed in accordance with this Clause
            16.7, the Buyers will bear full responsibility for the aircraft upon
            which the flight is performed, including but not limited to any
            required maintenance, all expenses such as fuel, oil or landing fees
            and the provision of insurance required under Clause 19.

16.8        Maintenance Training

16.8.1      The Seller will provide maintenance training for the Buyers' ground
            personnel as described in Exhibit A to this Clause 16. The available
            courses are listed in the Seller's applicable Training Course
            Catalog. The practical training provided in the frame of maintenance
            training is performed exclusively on the training devices in use in
            the Seller's Training Center or the Affiliated Training Center. If
            additional practical training is required, such additional practical
            training can be organized with the assistance of the Seller, in
            accordance with Clause 16.8.2.

16.8.2      Practical Training

            If the Buyers require practical training to be organized at another
            airline's facilities, then the Seller will assist the Buyers in
            organizing this training without guaranteeing the availability of
            any other airline's facilities. The provision of an

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            instructor by the Seller for such practical training will be
            deducted from the trainee-day allowance set forth in Paragraph 2.1
            of Exhibit A to this Clause 16 in the manner described in Paragraph
            3 of such Exhibit A. The Buyers will reimburse the Seller the
            expenses for said instructor in accordance with Clause 16.6.2.

16.8.3      Line Maintenance Initial Operating Experience Training

            In order to assist the Buyers during the entry into service of the
            Aircraft, the Seller will provide to the Buyers maintenance
            instructor(s) at the Buyers' main A350 base as set forth in Appendix
            A to this Clause 16.

            (a)   Line maintenance initial operating experience training will
                  cover training in handling and servicing of Aircraft, flight
                  crew and maintenance coordination, use of Technical Data
                  and/or any other activities which may be deemed necessary
                  after Delivery of the first Aircraft.

            (b)   The Buyers will reimburse the expenses for said instructor(s)
                  in accordance with Clause 16.6.2. Additional maintenance
                  instructors can be provided at the Buyers' expense.

16.9        Supplier and Engine Manufacturer Training

            The Seller will ensure that major Suppliers and the Propulsion
            System manufacturer provide maintenance training and overhaul
            training on their products at appropriate times. A copy of the
            Supplier Training Catalog, listing the suppliers that provide
            training, will be supplied to the Buyers on request.

16.10       Training Aids for the Buyers' Training Organization

16.10.1     The Seller will provide to the Buyers Airbus computer based training
            ("AIRBUS CBT"), training aids, as used in the Seller's Training
            Centers and the Virtual Aircraft (Walk Around and Component
            Location), free of charge as set forth in Exhibit A to this Clause
            16.

            The Airbus CBT and training aids supplied to the Buyers will be
            similar to those used at the Airbus Training Centers for training.
            The Seller has no obligation to cause the Manufacturer to revise the
            Airbus CBT. The Airbus CBT in use at the Seller's Training Center
            may be revised on a regular basis, and such revisions, if any, will
            be provided to the Buyers until the expiration of the period when
            training courses provided under this Clause 16 are performed for the
            Buyers, or up to one (1) year after delivery of the Airbus CBT or
            Virtual Aircraft to the Buyers, whichever occurs first.

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16.10.2     Delivery

            (a)   The Seller will deliver to the Buyers the Airbus CBT and
                  training aids, at a date to be mutually agreed during the
                  Training Conference, but no later than six (6) months before
                  the Delivery Date of the first Aircraft.

            (b)   Those items supplied to the Buyers pursuant to Clause 16.10.1
                  will be delivered FCA Toulouse, France, and/or FCA Hamburg,
                  Germany. Title to and risk of loss of said items will pass to
                  the Buyer selected pursuant to Clause 16.4.2(iv) upon
                  delivery.

16.10.3     Installation of Airbus CBT System

            (a)   Before the initial delivery of the Airbus CBT, the Seller will
                  provide an "Airbus CBT Administrator Course" to up to six (6)
                  trainees of the Buyers, at the facilities of one of the
                  Buyers. To conduct the course, the workstations and/or
                  servers, as applicable, will be ready for use and will comply
                  with the latest "Airbus CBT Workstation Technical
                  Specification" or "Airbus CBT Server Technical Specification",
                  as applicable.

            (b)   The Buyers will provide any and all the necessary hardware on
                  which the Airbus CBT will be installed and Seller will not be
                  responsible for any incompatibility of such hardware with the
                  Airbus CBT.

            (c)   The Airbus CBT will be installed by the Buyers' personnel who
                  have completed the Airbus CBT training, and the Seller will be
                  held harmless from any damage to person and/or to property
                  caused by or in any way connected with the handling and/or
                  installation of the Airbus CBT by the Buyers' personnel.

            (d)   In accordance with Clause 16.6.2, the Buyers will reimburse
                  the expenses for the Seller's personnel required at any
                  Buyer's facility to conduct Airbus CBT Training and/or provide
                  installation assistance.

16.10.4     License

            (a)   The Seller will grant the Buyers a license to use the Airbus
                  CBT and the Virtual Aircraft that will incorporate the Terms
                  and Conditions for License for Use of Software set forth in
                  Exhibit H.

            (b)   Supply of additional sets of Virtual Aircraft Software and
                  courseware supports, as well as any extension to the license
                  for such courseware, will be subject to terms and conditions
                  to be mutually agreed.

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16.10.5     The Seller will not be responsible for, and hereby disclaims any and
            all liabilities resulting from or in connection with the use by the
            Buyers of the Airbus CBT, the Virtual Aircraft and any other
            training aids at the Buyers' facilities.

16.11       Proprietary Rights

            The Seller's training data and documentation, Airbus CBT and
            training aids are proprietary to the Manufacturer and its suppliers.
            All such training materials are supplied for the sole use by the
            Buyers in training its personnel to maintainand operate the
            Aircraft. These proprietary rights will also apply to any
            translation of such Material into a language or languages or medium
            or media that may have been performed or caused to be performed by
            the Buyer.

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                                                         APPENDIX A TO CLAUSE 16

                               TRAINING ALLOWANCES

[...***...]

*** Confidential Treatment Requested

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[...***...]

*** Confidential Treatment Requested

AWE/USA - A350 - PA                                                           81

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      [...***...]

***   Confidential Treatment Requested

AWE/USA - A350 - PA                                                           82

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                                                         APPENDIX B TO CLAUSE 16

                        MINIMUM RECOMMENDED QUALIFICATION
                      IN RELATION TO TRAINING REQUIREMENTS

                          (Standard Transition Courses)

The prerequisites listed below are the minimum recommended requirements
specified for Airbus training. If the appropriate Aviation Authority or the
specific airline policy of the trainee demands greater or additional
requirements, such requirements will be prerequisites.

-     CAPTAIN prerequisites

            -     Previously qualified on JAR/FAR/CS 25 aircraft and commercial
                  operations

            -     Valid and current Airlines Transport License (ATPLY)

            -     Previous command experience

            -     Fluency in English

            -     Jet experience

            -     1500 hours minimum flying experience as pilot

            -     1000 hours experience on FAR/JAR 25/CS 25 aircraft

            -     200 hours experience as airline, corporate pilot or military
                  transport pilot

            -     Must have flown transport type aircraft, as flying pilot,
                  within the last 12 months.

-     FIRST OFFICER prerequisites

            -     Previously qualified on JAR/FAR/CS 25 aircraft and commercial
                  operations

            -     Aircraft and commercial operations valid and current
                  commercial pilot license with instrument rating

            -     Fluency in English

            -     Jet experience

            -     500 hours minimum flying experience as pilot of fixed wing
                  aircraft

            -     300 hours experience on FAR/JAR/CS 25 aircraft

            -     200 hours flying experience as airline pilot or a corporate
                  pilot or military transport pilot

      For both CAPTAIN and FIRST OFFICER, if one or several of the above
      criteria are not met, the trainee must follow

            (i)   an adapted course or

            (ii)  an entry level training program before entering the regular or
                  the adapted course.

      Such course(s), if required, will be at the Buyers' expense.

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                                                         APPENDIX B TO CLAUSE 16

-     FIRST TYPE RATING COURSE

This course is designed for ab initio pilots who do not hold an aircraft type
rating on their pilot license

      PILOT PREREQUISITES

      -     Valid and current commercial pilot license

      -     Valid and current instrument rating on multi engine aircraft

      -     Airlines Transport License (ATPLY) written examination

      -     Fluency in English

      -     Flight experience:

                  -     220 hours as pilot

                  -     100 hours as pilot in command

                  -     25 hours on multi engine aircraft (up to 10 hours can be
                        completed in a simulator)

In addition to the above conditions and in accordance to the JAR Flight Crew
Licensing and the Airbus Training Policy, a pilot applying for a first type
rating must have followed either an approved JAR Multi Crew Cooperation ("MCC")
program or regulatory equivalent or the "Airbus Entry Level Training program"
(combined MCC and jet familiarization course). Such course, if required, will be
at the Buyers' expense.

-     CQ ADDITIONAL prerequisites

In addition to the prerequisites set forth for the Flight Crew Standard
Transition Course, both CAPTAIN and FIRST OFFICER must:

            -     be qualified and current on the base aircraft type

            -     have 150 hours minimum and 3 months minimum of operations on
                  the base aircraft type.

-        TRI COURSE ADDITIONAL prerequisites

In addition to the prerequisites set forth for the Flight Crew Standard
Transition Course, it is the responsibility of the Buyers to:

            -     select instructor candidate(s) with airmanship and behavior
                  corresponding to the role and responsibility of an airline
                  instructor, and

            -     designate instructor candidate(s) with the Airbus
                  prerequisite, which corresponds to the JAR requirements (ref
                  JAR - FCL 1 - Requirements/ Subparts H - Instructor rating
                  (Aeroplane) C.

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                                                         APPENDIX B TO CLAUSE 16

      MAINTENANCE PERSONNEL prerequisites

      (i)   For all maintenance courses:

                  Fluency in English
                  Experience on first or second generation jet transport
                  category aircraft

      (ii)  Additional prerequisites for Aircraft Rigging Engine Run-Up and
                  Maintenance Initial Operating Course:

                  -     Qualified as line or line and base mechanic on the
                  concerned Airbus aircraft type (for Maintenance Initial
                  Operating Experience Course).

      (iii) Additional prerequisites - Maintenance Initial Operating Experience

                  Be currently qualified as line or base mechanic on the base
                  Aircraft

      (iv)  Additional prerequisites - MAINTENANCE TRAINING DIFFERENCE COURSE

                  Be current and operating on the base Aircraft.

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17 -        SUPPLIER PRODUCT SUPPORT

17.1        Equipment Supplier Product Support Agreements

17.1.1      The Seller will, at no charge to the Buyers, transfer to the Buyers
            the Supplier Product Support Agreements transferable to the Buyers
            from Suppliers of Seller Furnished Equipment listed in the
            Specification on Delivery. These agreements are based on the "World
            Airlines and Suppliers Guide" and include Supplier commitments
            contained in the Supplier Product Support Agreements, which include
            the following:

            (i)   Technical data and manuals required to operate, maintain,
                  service and overhaul the Supplier items will (a) be prepared
                  in accordance with the applicable provisions of ATA
                  Specification 100 and 101 in accordance with Clause 14, (b)
                  include revision service, and (c) be published in the English
                  language. The Seller will make reasonable efforts to ensure
                  that software data, supplied in the form of an appendix to the
                  Component Maintenance Manual, be provided in compliance with
                  ATA Specification 102 up to level 3 to protect Suppliers'
                  proprietary interests,

            (ii)  Warranties and guarantees, including Suppliers' standard
                  warranties, and in the case of Suppliers of landing gear,
                  service life policies for selected landing gear structures,

            (iii) Training to ensure efficient operation, maintenance and
                  overhaul of the Suppliers' items for the Buyers' instructors,
                  shop and line service personnel.

            (iv)  Spares data in compliance with ATA Specification 200 or 2000,
                  initial provisioning recommendations, spares and logistics
                  service, including routine and emergency deliveries, and

            (v)   Technical service to assist the Buyers with maintenance,
                  overhaul, repair, operation and inspection of Supplier items
                  as well as required tooling and spares provisioning.

17.2        Supplier Compliance

            The Seller will monitor Supplier compliance with support commitments
            defined in the Supplier Product Support Agreements and will take
            action together with the Buyers, if necessary.

17.3        Supplier Part Repair Stations

            The Seller has developed with the Suppliers a comprehensive network
            of repair stations in the United States of America and Canada for
            those Supplier Parts originating from outside these countries.
            [...***...]

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AWE/USA - A350 - PA                                                           86

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18          BUYER FURNISHED EQUIPMENT

18.1        Administration

18.1.1      Without additional charge and in accordance with the Specification,
            the Seller will cause the Manufacturer to provide for the
            installation of the Buyer Furnished Equipment, provided that the BFE
            is referred to in the Airbus BFE Catalog of Approved Suppliers by
            Products valid at the time the BFE is ordered.

            The Seller will cause the Manufacturer to advise the Buyers of the
            dates by and location to which, in the planned release of
            engineering for the Aircraft, the Seller requires a written detailed
            engineering definition. This description will include the definition
            of the dimensions and weight of BFE, the information related to its
            certification and information necessary for the installation and
            operation thereof. The Buyers will furnish such detailed description
            and information by the dates specified. Thereafter, no information,
            dimensions or weights will be revised unless authorized by an SCN.

            The Seller will also provide the Buyers in due time with a schedule
            of dates and shipping addresses for delivery of BFE and (when
            requested by the Seller) additional spare BFE in order permit
            installation of the BFE in the Aircraft and delivery of the Aircraft
            in accordance with the delivery schedule. The Buyers will provide
            the BFE by such dates in a serviceable condition, to allow
            performance of any assembly, test, or acceptance process in
            accordance with the Seller's industrial schedule.

            The Buyers will also provide, when requested by the Manufacturer, at
            Airbus France S.A.S. works and/or at Airbus Deutschland GmbH works,
            as applicable and needed, adequate field service, including support
            from BFE suppliers to act in a technical advisory capacity to the
            Seller in the installation, calibration and possible repair of any
            BFE.

18.1.2      The BFE will be imported into France or into Germany by the Buyers
            under a suspensive customs system ("Regime de l'entrepot industriel
            pour fabrication coordonnee" or "Zollverschluss") without
            application of any French or German tax or customs duty, and will be
            Delivered Duty Unpaid (DDU) (as defined in Incoterms 2000:ICC
            Official Rules for the Interpretation of Trade Terms, published by
            the International Chamber of Commerce), to

                  Airbus France S.A.S.
                  316 Route de Bayonne
                  31300 Toulouse, France
                  or
                  Airbus Deutchland GmbH
                  Division Hamburger Flugzeugbau
                  Kreetslag 10
                  21129 Hamburg
                  Federal Republic of Germany
                  as provided in Clause 18.1.1.

AWE/USA - A350 - PA                                                           87

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18.1.3      If any of the Buyers requests the Seller to supply directly certain
            items that are considered BFE according to the Specification, and if
            such request is notified to the Seller in due time in order not to
            affect the Delivery Date of the Aircraft, the Seller may agree to
            order such items subject to the execution of an SCN reflecting the
            effect on price, escalation adjustment, and any other conditions of
            the Agreement. In such a case the Seller will be entitled to the
            payment of a reasonable handling charge and will bear no liability
            in respect of delay and product support commitments for such items.

18.2        Requirements

            Each of the Buyers is responsible for assuring and warranting, at
            its expense, that BFE will (i) be manufactured by a qualified
            supplier in accordance with the provisions of Clause 18.1.1, (ii)
            meet the requirements of the applicable Specification, (iii) comply
            with applicable requirements incorporated by reference to the Type
            Certificate and listed in the Type Certificate Data Sheet, and (iv)
            be approved by the applicable Aviation Authority delivering the
            Export Certificate of Airworthiness and by the FAA for installation
            and use on the Aircraft at the time of Delivery of such Aircraft.
            The Seller will be entitled to refuse any item of BFE that it
            considers incompatible with the Specification, the engineering
            definition mentioned above in Clause 18.1.1 or the certification
            requirements.

18.3        Buyers' Obligation and Seller's Remedies

18.3.1      Any delay or failure in

            (i)   furnishing the BFE in serviceable condition at the requested
                  delivery date,

            (ii)  complying with the warranty in Clause 18.2 or in providing the
                  descriptive information or service representatives mentioned
                  in Clause 18.1.1, or

            (iii) in obtaining any required approval for such equipment under
                  the above mentioned Aviation Authorities regulations

            may delay the performance of any act to be performed by the Seller,
            and cause the Final Contract Price of the Aircraft to be adjusted in
            accordance with the updated delivery schedule, including, in
            particular, the costs the Seller incurs that are attributable to the
            delay or failure described above, such as storage, taxes, insurance
            and costs of out-of sequence installation.

18.3.2      In addition to the consequences outlined in Clause 18.3.1, in the
            event of a delay or failure described in Clause 18.3.1,

            (i)   the Seller may select, purchase and install equipment similar
                  to the BFE at issue, in which event the Final Contract Price
                  of the affected Aircraft will also be increased by the
                  purchase price of such equipment, plus reasonable costs and
                  expenses incurred by the Seller for handling charges,
                  transportation, insurance, packaging and, if required and not
                  already provided for in the price of the Aircraft, for
                  adjustment and calibration; or

AWE/USA - A350 - PA                                                           88

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            (ii)  if the BFE is delayed more than thirty (30) days beyond, or
                  unapproved within thirty (30) days of the date specified in
                  Clause 18.1.1, then the Seller may deliver or the Buyers may
                  elect to have the Aircraft delivered without the installation
                  of such equipment, notwithstanding the terms of Clause 7.2
                  insofar as it may otherwise have applied, whereon the Seller
                  will be relieved of all obligations to install such equipment.

18.4        Title and Risk of Loss

            Title to (subject to Clause 18.5.5) and risk of loss of BFE will at
            all times remain with the Buyer that is the owner thereof, except
            that risk of loss (limited to cost of replacement of said BFE and
            excluding in particular loss of use) will be with the Seller for as
            long as the BFE is in the care, custody and control of the Seller.

18.5        Disposition of BFE Following Termination

18.5.1      If a termination of this Agreement pursuant to the provisions of
            Clause 21 occurs with respect to an Aircraft in which all or any
            part of the BFE has been installed prior to the date of such
            termination, the Seller will be entitled, but not required, to
            remove all items of BFE that can be removed without damage to the
            Aircraft and to undertake commercially reasonable efforts to
            facilitate the sale of such items of BFE to other customers,
            retaining and applying the proceeds of such sales to reduce Seller's
            damages resulting from the termination.

18.5.2      The Buyers will cooperate with the Seller in facilitating the sale
            of BFE pursuant to Clause 18.5.1 and will, jointly and severally, be
            responsible for all costs incurred by the Seller in removing and
            facilitating the sale of such BFE. The Buyers will, jointly and
            severally, reimburse the Seller for all such costs within five (5)
            Working Days of receiving documentation of such costs from the
            Seller.

18.5.3      The Seller will notify the Buyers as to those items of BFE not sold
            by the Seller pursuant to Clause 18.5.1 and, at the Seller's
            request, the Buyers will remove such items from the Seller' facility
            within thirty (30) days of the date of such notice. The Buyers will
            have no claim against the Seller for damage or destruction of any
            item of BFE removed from the Aircraft and not removed from Seller's
            facility within such period.

18.5.4      The Buyers will have no claim against the Seller for damage to or
            destruction of any item of BFE damaged or destroyed in the process
            of being deinstalled from the Aircraft, provided that the Seller
            will use reasonable care in such deinstallation.

18.5.5      The Buyers will grant title to the Seller for any BFE items that
            cannot be removed from the Aircraft without causing damage to the
            Aircraft or rendering any system in the Aircraft unusable.

AWE/USA - A350 - PA                                                           89

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19          Indemnities and Insurance

19.1        Seller's Indemnities

            The Seller will, except in the case of gross negligence or willful
            misconduct of any Buyer, it's directors, officers, agents, or
            employees, be solely liable for and will indemnify and will hold the
            Buyers and their respective directors, officers, agents or
            employees, Affiliates and Suppliers harmless against all losses,
            liabilities, claims, damages, costs and expenses, including court
            costs and reasonable attorneys' fees ("LOSSES"), arising from claims
            for

            (a)   injuries to, or deaths of, the Seller's, Manufacturer's or any
                  Associated Contractor's respective directors, officers, agents
                  or employees, or loss or damage to property of the Seller,
                  Manufacturer or any Associated Contractor or their respective
                  employees or agents when such losses occur during or are
                  incidental to (i) the exercise by any of the Buyers of its
                  inspection rights under Clause 6, (ii) the Technical
                  Acceptance Process described in Clause 8, (iii) the provision
                  of Resident Customer Support pursuant to Clause 15 or (iv) the
                  provision of training pursuant to Clause 16; and

            (b)   injuries to or deaths of third parties, or loss of property of
                  third parties, occurring during, or incidental to (i) the
                  exercise by any Buyer of its inspection rights pursuant to
                  Clause 6 or (ii) the Technical Acceptance Process described in
                  Clause 8.

19.2        Buyers' Indemnities

            The Buyers will, jointly and severally, except in the case of gross
            negligence or willful misconduct of the Seller, its directors,
            officers, agents and employees, be solely liable for and will
            indemnify and will hold the Seller, the Manufacturer, each of the
            Associated Contractors and their respective subcontractors,
            Affiliates and Suppliers of the Seller, the Seller's
            representatives, and the respective assignees, directors, officers,
            agents and employees of each of the foregoing, harmless against all
            Losses arising from:

            (a)   injuries to or deaths of the directors, officers, agents or
                  employees of any Buyer, or loss or damage to property of any
                  Buyer or the employees or agents of any of them, when such
                  losses occur during or are incidental to (i) the exercise by
                  any Buyer of its inspection rights under Clause 6; (ii) the
                  Technical Acceptance Process described in Clause 8, (iii) the
                  provision of Field Assistance pursuant to Clause 15, or (iv)
                  the provision of training pursuant to Clause 16; and

            (b)   claims for injuries to or deaths of third parties, or loss of
                  property of third parties, where such losses occur during or
                  incidental to (i) the provision of Field Services under Clause
                  15 or (ii) arise out of the provision of training pursuant to
                  Clause 16 and are not caused by a defect of the type specified
                  in Clause 12.1.1 that is not excluded under Clause 12.1.2.

AWE/USA - A350 - PA                                                           90

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19.3        Notice and Defense of Claims

            (a)   If any claim is made or suit is brought against a party or
                  entity entitled to indemnification under this Clause 19 (the
                  "INDEMNITEE") for damages for which liability has been assumed
                  by the other party under this Clause 19, (the "INDEMNITOR"),
                  the Indemnitee will promptly give notice to the Indemnitor and
                  the Indemnitor (unless otherwise requested by the Indemnitee)
                  will assume and conduct the defense, or settlement, of such
                  suit, as the Indemnitor will deem prudent. Notice of the claim
                  or suit will be accompanied by all information pertinent to
                  the matter as is reasonably available to the Indemnitee and
                  will be followed by such cooperation by the Indemnitee as the
                  Indemnitor or its counsel may reasonably request at the
                  expense of the Indemnitor.

            (b)   If the Indemnitor fails or refuses to assume the defense of
                  any claim or lawsuit notified to it under this Clause 19, the
                  Indemnitee will have the right to proceed with the defense or
                  settlement of the claim or lawsuit as it deems prudent and
                  will have a claim over against the Indemnitor for any
                  judgments, settlements, costs or expenses, including
                  reasonable attorneys' fees. Further, in such event, the
                  Indemnitor will be deemed to have waived any objection or
                  defense to the Indemnitee's claim based on the reasonableness
                  of any settlement.

19.4        Insurance

            [...***...]

            [...***...]

            [...***...]

            [...***...]

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AWE/USA - A350 - PA                                                           91

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            [...***...]

            [...***...]

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AWE/USA - A350 - PA                                                           92

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20          ASSIGNMENTS AND TRANSFERS

20.1        Assignments by Buyers

            Except as hereinafter provided, none of the Buyers may sell, assign
            or transfer its rights or obligations under this Agreement to any
            person without the prior written consent of the Seller.

20.2        Assignments on Sale, Merger or Consolidation

            The Buyers will be entitled to assign their rights under this
            Agreement at any time due to a merger or consolidation, provided the
            Buyers first obtains the written consent of the Seller. The Seller
            will provide its consent if:

            (i)   the surviving or acquiring entity is organized and existing
                  under the laws of the United States;

            (ii)  the surviving or acquiring entity has executed an assumption
                  agreement, in form and substance reasonably acceptable to the
                  Seller, agreeing to assume all of the Buyers' obligations
                  under this Agreement;

            (iii) at the time, and immediately following the consummation, of
                  the merger, consolidation or sale, no event of default exists
                  or will have occurred and be continuing;

            (iv)  there exists with respect to the surviving or acquiring entity
                  no basis for a Termination Event within the meaning of Clause
                  21;

            (v)   the surviving or acquiring entity holds an air carrier
                  operating certificate issued by the FAA at the time, and
                  immediately following the consummation, of such sale, merger
                  or consolidation; and

            (vi)  following the sale, merger or consolidation, the surviving or
                  acquiring entity in a financial condition at least equal to
                  that of the Buyers, collectively, at time of execution of this
                  Agreement.

20.3        Designations by Seller

            The Seller may at any time by notice to the Buyers designate
            facilities or personnel of the Manufacturer, ANACS, any of the
            Associated Contractors or any Affiliate of the Manufacturer or any
            Affiliate of an Associated Contractor at which or by whom the
            services to be performed under this Agreement will be performed. The
            Seller may also designate the Manufacturer or any Affiliate of an
            Associated Contractor as the party responsible on behalf of the
            Seller for providing to the Buyers all or any of the Agreement.
            Notwithstanding such designation, the Seller will remain ultimately
            responsible for fulfillment of all obligations undertaken by the
            Seller in this Agreement.

AWE/USA - A350 - PA                                                           93

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20.4        Transfer of Rights and Obligations upon Reorganization

            If at any time until the date upon which all the obligations and
            liabilities of the Seller under this Agreement have been discharged,
            the legal structure, the membership or the business of the Seller is
            reorganized or the legal form of the Seller is changed and as a
            consequence thereof the Seller wishes the Buyers to accept the
            substitution of the Seller by another entity within the restructured
            Airbus group (or the Seller in its new legal form) ("NEWCO") as
            contemplated below, the Seller will promptly notify the Buyers of
            its wish.

            In such event, the Seller may request the Buyers to enter into a
            novation agreement and/or other agreement having the same effect
            whereby the Seller's rights and obligations under this Agreement are
            novated or transferred in favor of Newco. Upon receipt of such
            request, the Buyers will enter into a novation agreement and/or
            other appropriate agreement, provided that the Buyers' rights and
            obligations under this Agreement are not materially adversely
            affected by such novation and/or other agreement.

            Until any such novation agreement/other appropriate documentation
            has come into effect, this Agreement will remain in full force and
            effect, and each party will act diligently and in good faith to
            implement the novation agreement and/or other appropriate
            documentation as soon as practicable after Newco has come into
            existence.

20.5        [...***...]

            [...***...]

20.6        [...***...]

            [...***...]

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AWE/USA - A350 - PA                                                           94

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            [...***...]

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AWE/USA - A350 - PA                                                           95

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21.         TERMINATION

21.1        Termination Events

            Each of the following will constitute a "TERMINATION EVENT

            [...***...]

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AWE/USA - A350 - PA                                                           96

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                  [...***...]

21.2        If a Termination Event occurs, each of the Buyers will be in
            material breach of this Agreement, and the Seller will have the
            right to receive payment from the Buyers, jointly and severally, as
            liquidated damages and not as a penalty, an amount equal to, for
            each Affected Aircraft (as defined in Clause 21.2(2) below), and
            may, without limitation, by written notice to the Buyers,
            immediately:

            [...***...]

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AWE/USA - A350 - PA                                                           97

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                  [...***...]

                  [...***...]

                  [...***...]

            (3)   Liquidated damages will be payable by the Buyers promptly, and
                  in any event within ten (10) days of the date of written
                  notice and demand therefor from Seller, such demand to set
                  forth in reasonable detail the calculation of such liquidated
                  damages and will identify the Termination Event upon which the
                  Seller is relying. The parties agree that the remedy of
                  liquidated damages is not to be denied to the Seller due to
                  the inability of Seller to deliver a notice and demand for
                  payment thereof due to the operation of law following a
                  bankruptcy or other Termination Event under Clauses 21.1.1(1)
                  - (4). The parties further agree that in circumstances where a
                  Termination Event has occurred and the Seller does not cancel
                  this Agreement as to any or all Aircraft, but instead seeks to
                  recover its actual damages resulting therefrom, the amount of
                  actual damages payable by the Buyers will not exceed the
                  amount of liquidated damages that could have been claimed by
                  Seller pursuant to Clause 21.1.2(2) had the Seller elected to
                  claim, as a result of such Termination Event, liquidated
                  damages pursuant to Clause 21.2(2).

            (4)   The parties to this Agreement are commercially sophisticated
                  parties represented by competent counsel. The parties
                  expressly agree and declare that damages for material breach
                  of this Agreement by the Buyers resulting in a termination of
                  this Agreement pursuant to Clause 21.1.2(1)(iv) as to any or
                  all Aircraft have been liquidated at amounts which are
                  reasonable in light of the anticipated or actual harm caused
                  by any Buyer's breach, the difficulties of proof of loss and
                  the nonfeasibility of otherwise obtaining an adequate remedy.
                  It is understood and agreed by the parties that the amount of
                  liquidated damages set forth herein is the total amount of
                  monetary damages, no more and no less, to which the Seller
                  will be entitled for and with respect to any Aircraft as
                  recovery for material breach of this Agreement by any Buyer
                  resulting in a Termination by the Seller of this Agreement as
                  to such Aircraft.

21.3        For purposes of this Clause 21

            (i)   "Affected Aircraft" - means any or all Aircraft with respect
                  to which the Seller has cancelled or terminated this Agreement
                  pursuant to Clause 21.1.2(1)(iv),

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AWE/USA - A350 - PA                                                           98

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            (ii)  "Applicable Date" - for any Affected Aircraft means the date
                  of the Termination Event that the Seller specifies in its
                  notice and demand for payment of liquidated damages delivered
                  under Clause 21.1(3), and

            (iii) "Escalated Price" - means the sum of (i) the Base Price of the
                  Aircraft and (ii) the Base Price of SCNs and MSCNs entered
                  into after the date of this Agreement, both as escalated to
                  the Applicable Date in accordance with the provisions of
                  Clause 4.

21.         4. Promptly upon obtaining knowledge of the occurrence of a
            Termination Event by any Buyer, such Buyer will notify the Seller of
            such occurrence in writing, provided, that any failure by any Buyer
            to notify the Seller will not prejudice the Seller's rights or
            remedies hereunder.

21.5        If at any time prior to Scheduled Delivery Date of an Aircraft, the
            Seller has reasonable grounds for insecurity as to the ability of
            any Buyer to perform its obligation to take Delivery of such
            Aircraft, then the Seller will send the Buyers a written demand for
            adequate assurance of performance. If adequate assurance acceptable
            to the Seller is not received within thirty (30) days following the
            date of such written demand, then the Seller will have the right to
            either (a) exercise the remedies provided under Section 2-609 of the
            Uniform Commercial Code or (b) exercise any of its remedies under
            Clause 21.2.

21.6        Information Covenants

            Each of the Buyers hereby covenants and agrees that, from the date
            of this Agreement until no further Aircraft are to be delivered
            hereunder, the Buyers will furnish or cause to be furnished to the
            Seller the following:

            (a)   Annual Financial Statements. As soon as available and in any
                  event no later than the date that the Buyers furnish such
                  annual statements to the Securities and Exchange Commission or
                  successor thereto (the "SEC") (i) a copy of the SEC Form 10-K
                  filed by the Buyers, as a group, with the SEC for such fiscal
                  year, or, if no such Form 10-K was filed by the Buyers for
                  such fiscal year, no later than the 90th day following the
                  close of such fiscal year of the Buyers, the consolidated
                  balance sheet of the Buyers and their Subsidiaries, as at the
                  end of such fiscal year and the related consolidated
                  statements of operations, of common stockholders' equity
                  (deficit) (in the case of the Buyers and their Subsidiaries)
                  and of cash flows for such fiscal year, setting forth
                  comparative consolidated figures as of the end of and for the
                  preceding fiscal year, and examined by any firm of independent
                  public accountants of recognized standing selected by the
                  Buyers and reasonably acceptable to the Seller, whose opinion
                  will not be qualified as to the scope of audit or as to the
                  status of the Buyers as a going concern, and (ii) a
                  certificate of such accounting firm stating that its audit of
                  the business of the Buyers was conducted in accordance with
                  generally accepted auditing standards. In lieu of actual
                  delivery of such Form 10-K, the Buyers may notify the Seller
                  that such report has been filed with the SEC and is publicly
                  available on EDGAR (or any successor online resource).

AWE/USA - A350 - PA                                                           99

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            (b)   Quarterly Financial Statements. As soon as available and in
                  any event no later than the date that the Buyers furnish such
                  quarterly statements to the SEC, a copy of the SEC Form 10-Q
                  filed by the Buyers, as a group, with the SEC for such
                  quarterly period, or, if no such Form 10-Q was filed by the
                  Buyers with respect to any such quarterly period, no later
                  than the forty-fifth (45th) day following the close of such
                  quarterly period, the consolidated balance sheet of the Buyers
                  and their Subsidiaries, as at the end of such quarterly period
                  and the related consolidated statements of operations for such
                  quarterly period and for the elapsed portion of the fiscal
                  year ended with the last day of such quarterly period and in
                  each case setting forth comparative consolidated figures as of
                  the end of and for the related periods in the prior fiscal
                  year, all of which will be certified by an Authorized Officer
                  of each of the Buyers, subject to changes resulting from audit
                  and normal year-end audit adjustments. In lieu of actual
                  delivery of such Form 10-Q, the Buyers may notify the Seller
                  that such report has been filed with the SEC and is publicly
                  available on EDGAR (or any successor online resource).

            (c)   Debt Rescheduling. (i) Promptly upon the commencement by any
                  of the Buyers of negotiations with one or more of its
                  significant creditors with a view to general readjustment or
                  rescheduling of all or any material part of its indebtedness
                  under circumstances in which a reasonable business person, in
                  the exercise of prudent business judgment, would conclude that
                  such Buyer would otherwise not be able to pay such
                  indebtedness as it falls due, notice of commencement of such
                  negotiations, and (ii) thereafter timely advice of the
                  progress of such negotiations until such negotiations are
                  terminated or completed.

            (d)   Acceleration of other indebtedness. Immediately upon knowledge
                  by any Buyer that the holder of any bond, debenture,
                  promissory note or any similar evidence of indebtedness of
                  such Buyer or Affiliate thereof ("OTHER INDEBTEDNESS") has
                  demanded payment, given notice or exercised its right to a
                  remedy having the effect of acceleration with respect to a
                  claimed event of default under any Other Indebtedness, where
                  the impact of the acceleration is likely to have a material
                  adverse effect on such Buyer's ability to perform its
                  obligations under or in connection with the transactions
                  contemplated by this Agreement, notice of the demand made,
                  notice given or action taken by such holder and the nature and
                  status of the claimed event of default and what the action
                  such Buyer is taking with respect thereto.

            (e)   Other Information. Promptly upon transmission thereof, copies
                  of any filings and registrations with, and reports to, the SEC
                  by any Buyer or any of its Affiliates, and, with reasonable
                  promptness, such other information or documents (financial or
                  otherwise) as the Seller may reasonably request from time to
                  time. In lieu of actual delivery of any such filing or
                  registration, the Buyers may notify the Seller that the same
                  has been filed with the SEC and is publicly available on EDGAR
                  (or any successor online resource).

            For the purposes of this Subclause 21.2, (x) an "AUTHORIZED OFFICER"
            of any Buyer will mean the Chief Executive Officer, the Chief
            Financial Officer or any Vice President and above thereof who
            reports directly or indirectly to the Chief Financial Officer and
            (y) "SUBSIDIARIES"

AWE/USA - A350 - PA                                                          100

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            will mean, as of any date of determination, those companies owned by
            any Buyer whose financial results the Buyers are required to include
            in their statements of consolidated operations and consolidated
            balance sheets.

AWE/USA - A350 - PA                                                          101

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22          MISCELLANEOUS PROVISIONS

22.1        Data Retrieval

            On the Seller's reasonable request, each Buyer will provide the
            Seller with all the necessary data, as customarily compiled by it
            and pertaining to the operation of the Aircraft, to assist the
            Seller in making an efficient and coordinated survey of all
            reliability, maintenance, operational and cost data with a view to
            improving the safety, availability and operational costs of the
            Aircraft.

22.2        Notices

            All notices and requests required or authorized hereunder will be
            given in writing either by personal delivery to a responsible
            officer of the party to whom the same is given or by commercial
            courier, certified air mail (return receipt requested) or facsimile
            at the addresses and numbers set forth below. The date on which any
            such notice or request is so personally delivered, or if such notice
            or request is given by commercial courier, certified air mail or
            facsimile the date on which it is given, will be deemed to be the
            effective date of such notice or request.

            The Seller will be addressed at:

                  2, rond-point Maurice Bellonte
                  31700 Blagnac France
                  Attention: Director - Contracts

                  Telephone: 33 05 61 30 40 12
                  Telecopy: 33 05 61 30 40 11

            Each of the Buyers will be addressed, in the case of any item to be
            delivered other than via courier or personal service or delivery,
            at:

                  4000 East Sky Harbor Blvd.
                  Phoenix, AZ 85034
                  Attention: Senior Vice President and Chief Financial Officer

                  Telephone: (480) 693-5710
                  Fax: (480) 693-2899

            And, in the case of any item to be delivered via courier or personal
            service or delivery,

                  111 Rio Salado
                  Tempe, AZ 85281
                  Attention: Senior Vice President and Chief Financial Officer

AWE/USA - A350 - PA                                                          102

                          PRIVILEGED AND CONFIDENTIAL

<PAGE>

            From time to time, the party receiving the notice or request may
            designate another address or another person.

22.3        Waiver

            The failure of either party to enforce at any time any of the
            provisions of this Agreement, to exercise any right herein provided
            or to require at any time performance by the other party of any of
            the provisions hereof will in no way be construed to be a present or
            future waiver of such provisions nor in any way to affect the
            validity of this Agreement or any part hereof or the right of the
            other party thereafter to enforce each and every such provision. The
            express waiver by either party of any provision, condition or
            requirement of this Agreement will not constitute a waiver of any
            future obligation to comply with such provision, condition or
            requirement.

22.4        INTERPRETATION AND LAW

            THIS AGREEMENT WILL, PURSUANT TO NEW YORK GENERAL OBLIGATIONS LAW
            SECTION 5-1401, BE GOVERNED BY AND CONSTRUED AND THE PERFORMANCE
            THEREOF WILL BE DETERMINED IN ACCORDANCE WITH THE LAWS OF THE STATE
            OF NEW YORK, WITHOUT GIVING EFFECT TO ITS CONFLICTS OF LAWS
            PROVISIONS THAT WOULD RESULT IN THE APPLICATION OF THE LAW OF ANY
            OTHER JURISDICTION.

            [...***...]

            Each party (i) hereby irrevocably submits itself to the nonexclusive
            jurisdiction of the courts of the state of New York in New York
            County and, to the extent permitted by applicable law, of the United
            States District Court for the Southern District of New York, for the
            purposes of any suit, action or other proceeding arising out of this
            Agreement or any of the transactions contemplated hereby brought by
            any party or parties hereto, and (ii) hereby waives, and agrees not
            to assert, by way of motion, as a defense, counterclaim or
            otherwise, in any such suit, action or proceeding, to the extent
            permitted by applicable law, the defense of sovereign immunity, any
            claim that it is not personally subject to the jurisdiction of the
            above-named courts by reason of sovereign immunity or otherwise or
            that it or its property is exempt or immune from jurisdiction of
            such court or from legal process (whether through service of notice,
            attachment prior to judgment, attachment in aid of execution or
            judgment, execution of judgment or otherwise) and to the extent
            permitted by applicable law, that the suit, action or proceeding
            which is referred to in clause (i) above is brought in an
            inconvenient forum, that the venue of such suit, action or
            proceeding is improper, or that this Agreement or the subject matter
            hereof or any of the transactions contemplated hereby may not be
            enforced in or by these courts.

*** Confidential Treatment Requested

AWE/USA - A350 - PA                                                          103

                          PRIVILEGED AND CONFIDENTIAL

<PAGE>

22.4.1      Service of process in any suit, action or proceeding in respect of
            any matter as to which a Buyer has submitted to jurisdiction under
            Clause 22.4 may be made on such Buyer by delivery of the same
            personally or by dispatching the same via Federal Express, UPS, or
            similar international air courier, service prepaid to, CT
            Corporation, 111 Hudson St., New York, NY (or such other office in
            the City of New York as such agent will then be occupying), as agent
            for each of the Buyers, it being agreed that service upon CT
            Corporation will constitute valid service upon such Buyer or by any
            other method authorized by the laws of the State of New York.

22.5        Waiver of Jury Trial

            EACH OF THE PARTIES HERETO WAIVES ITS RIGHT TO TRIAL BY JURY IN ANY
            LITIGATION ARISING OUT OF OR RELATING TO THIS AGREEMENT AND FOR ANY
            COUNTERCLAIM OR CROSS-CLAIM THEREIN.

22.6        No Representations outside of this Agreement.

            The parties declare that, prior to the execution of this Agreement,
            they, with the advice of their respective counsel, apprised
            themselves of sufficient relevant data in order that they might
            intelligently exercise their own judgments in deciding whether to
            execute this Agreement and in deciding on the contents of this
            Agreement. Each party further declares that its decision to execute
            this Agreement is not predicated on or influenced by any
            declarations or representations by any other person, party, or any
            predecessors in interest, successors, assigns, officers, directors,
            employees, agents or attorneys of any said person or party, except
            as set forth in this Agreement. This Agreement resulted from
            negotiation involving counsel for all of the parties hereto and no
            term herein will be construed or interpreted against any party under
            the contra proferentum or any related doctrine.

22.7        Confidentiality

            [...***...]

*** Confidential Treatment Requested

AWE/USA - A350 - PA                                                          104

                          PRIVILEGED AND CONFIDENTIAL

<PAGE>

            [...***...]

            [...***...]

            [...***...]

22.8        Severability

            If any provision of this Agreement should for any reason be held to
            be without effect, the remainder of this Agreement will remain in
            full force and effect. To the extent permitted by applicable law,
            each party hereto hereby waives any provision of law, which renders
            any provision of this Agreement prohibited or unenforceable in any
            respect.

22.9        Alterations to Contract

            This Agreement, including its Exhibits and Appendices, contains the
            entire agreement between the parties with respect to the subject
            matter hereof and thereof and supersedes any previous understanding,
            commitments or representations whatsoever, whether oral or written
            including that certain MOU, AVSA No. 5343 between the Seller and the
            Buyers dated May 18, 2005. This Agreement will not be amended or
            modified except by an instrument in writing of even date herewith or
            subsequent hereto executed by both parties or by their fully
            authorized representatives.

22.10       Inconsistencies

            [...***...]

*** Confidential Treatment Requested

AWE/USA - A350 - PA                                                          105

                          PRIVILEGED AND CONFIDENTIAL

<PAGE>

22.11       Language

            All correspondence, documents and any other written matters in
            connection with this Agreement will be in English.

22.12       Headings

            All headings in this Agreement are for convenience of reference only
            and do not constitute a part of this Agreement.

22.13       Counterparts

            This Agreement may be executed by the parties hereto in separate
            counterparts, each of which when so executed and delivered will be
            an original, but all such counterparts will together constitute but
            one and the same instrument.

AWE/USA - A350 - PA                                                          106

                          PRIVILEGED AND CONFIDENTIAL

<PAGE>

23.         CERTAIN REPRESENTATIONS OF THE PARTIES

23.1.       Buyers' Representations

            Each of the Buyers represents and warrants to the Seller:

            (i)   it is a corporation organized and existing in good standing
                  under the laws of the State of Delaware and has the corporate
                  power and authority to enter into and perform its obligations
                  under this Agreement;

            (ii)  neither the execution and delivery by it of this Agreement,
                  nor the consummation of any of the transactions by it
                  contemplated hereby, nor the performance by it of the
                  obligations hereunder, constitutes a breach of any agreement
                  to which it is a party or by which its assets are bound;

            (iii) this Agreement has been duly authorized, executed and
                  delivered by it and constitutes its legal, valid and binding
                  obligation, enforceable against it in accordance with its
                  terms.

23.2        Seller's Representations

            The Seller represents and warrants to each of the Buyers:

            (i)   the Seller is a societe a responsabilite limitee organized and
                  existing in good standing under the laws of the Republic of
                  France and has the corporate power and authority to enter into
                  and perform its obligations under this Agreement;

            (ii)  neither the execution and delivery by the Seller of this
                  Agreement, nor the consummation of any of the transactions by
                  the Seller contemplated hereby, nor the performance by the
                  Seller of the obligations hereunder, constitutes a breach of
                  any agreement to which the Seller is a party or by which its
                  assets are bound;

            (iii) this Agreement has been duly authorized, executed and
                  delivered by the Seller and constitutes the legal, valid and
                  binding obligation of the Seller enforceable against the
                  Seller in accordance with its terms.

AWE/USA - A350 - PA                                                          107

                          PRIVILEGED AND CONFIDENTIAL

<PAGE>

IN WITNESS WHEREOF, these presents were entered into as of the day and year
first above written.

AVSA, S.A.R.L.

By: ___________________________

Title: ________________________

US AIRWAYS, INC.

By: ___________________________

Title: ________________________

AMERICA WEST AIRLINES, INC.

By: ___________________________

Title: ________________________

US AIRWAYS GROUP, INC.

By: ___________________________

Title: ________________________

AWE/USA - A350 - PA                                                          108

                          PRIVILEGED AND CONFIDENTIAL
<PAGE>
                                                                     EXHIBIT A-1

The A350-800 Standard Specification is contained in a separate folder.

BARBELL -A350 - PA Draft 1                                              Exh. A-1
DRAFT WITHOUT PREJUDICE                            PRIVILEGED AND CONFIDENTIAL
<PAGE>
                                                                     EXHIBIT A-2

The A350-900 Standard Specification is contained in a separate folder.

BARBELL -A350 - PA Draft 1                                              Exh. A-2
DRAFT WITHOUT PREJUDICE                            PRIVILEGED AND CONFIDENTIAL
<PAGE>

                                                                     EXHIBIT B-1

                      AVSA                        SCN No.
            SPECIFICATION CHANGE NOTICE           Issue
                     (SCN)                        Dated
                                                  Page No.

TITLE

DESCRIPTION

EFFECT ON WEIGHT
Manufacturer's Weight Empty Change:

Operational Weight Empty Change:

Allowable Payload Change:

REMARKS/REFERENCES
Response to RFC

SPECIFICATION CHANGED BY THIS SCN

THIS SCN REQUIRES PRIOR OR CONCURRENT ACCEPTANCE OF THE FOLLOWING SCN(s)

PRICE PER AIRCRAFT

US DOLLARS:

AT DELIVERY CONDITIONS:

This change will be effective on___________Aircraft No.___________and subsequent
provided approval is received by_____________________________.

BUYER APPROVAL                                     SELLER APPROVAL

By:                                                By:

Title: (Authorized Officer)             Date:

Date:

AWE/USA-A350                                                             Exh B-1
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

                                                                     EXHIBIT B-1

                      AVSA                        SCN No.
            SPECIFICATION CHANGE NOTICE           Issue
                     (SCN)                        Dated
                                                  Page No.

SCOPE OF CHANGE (FOR INFORMATION ONLY)

AWE/USA-A350                                                             Exh B-1
                           PRIVILEGED AND CONFIDENTIAL
<PAGE>

                                                                     EXHIBIT B-2

(AVSA LOGO)                     AIRLINE

MANUFACTURER'S SPECIFICATION    MSCN Number
       CHANGE NOTICE            Issue
                                Dated
           (MSCN)               Page          1 of 3
--------------------------------------------------------------------------------

    TITLE:

    DESCRIPTION

      EFFECT ON WEIGHT

                Manufacturer's Weight Empty Change :
                Operational Weight Empty Change    :
                Allowable Payload Change           :

    REMARKS / REFERENCES

    SPECIFICATION CHANGED BY THIS MSCN

================================================================================
PRICE PER AIRCRAFT

  US DOLLARS :

  AT DELIVERY CONDITIONS :.

  This change will be effective on      AIRCRAFT N(degrees)     and subsequent.

  Provided MSCN is not rejected by

  BUYER APPROVAL                          SELLER APPROVAL

  By   :                                  By  :

  Date :                                  Date :

AWE/USA -A350                                                            Exh B-2
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

                                                                     EXHIBIT B-2

(AVSA LOGO)                     AIRLINE

MANUFACTURER'S SPECIFICATION    MSCN Number
       CHANGE NOTICE            Issue
                                Dated
           (MSCN)               Page          2 of 3
--------------------------------------------------------------------------------

SPECIFICATION REPERCUSSION:

   After contractual agreement with respect to weight, performance, delivery,
   etc, the indicated part of the specification wording will read as follows:

AWE/USA -A350                                                            Exh B-2
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

                                                                     EXHIBIT B-2

(AVSA LOGO)                     AIRLINE

MANUFACTURER'S SPECIFICATION    MSCN Number
       CHANGE NOTICE            Issue
                                Dated
           (MSCN)               Page          3 of 3
--------------------------------------------------------------------------------

SCOPE OF CHANGE (FOR INFORMATION ONLY)

AWE/USA -A350                                                            Exh B-2
                           PRIVILEGED AND CONFIDENTIAL
<PAGE>
                                                                       EXHIBIT C

            ***CERTAIN CONFIDENTIAL INFORMATION HAS BEEN OMITTED AND
               FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
                    COMMISSION PURSUANT TO RULE 24B-2 OF THE
                  SECURITIES EXCHANGE ACT OF 1934, AS AMENDED

                           SELLER SERVICE LIFE POLICY

[...***...]

                                                                        Exh. C-1

***Confidential Treatment Requested

AWE/USA-A350
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

                                                                       EXHIBIT D

                            CERTIFICATE OF ACCEPTANCE
                                FOR A350 AIRCRAFT

In accordance with the terms of that certain A350 Purchase Agreement dated as of
____________, between __________, ("Designated Buyer") and AVSA, S.A.R.L.
("AVSA") (the "Purchase Agreement"), the acceptance inspections relating to the
Airbus A350 aircraft, Manufacturer's Serial Number: _____, U.S. Registration
Number: ______ with two (2) General Electric GEnx series propulsion systems
installed thereon, serial nos. ______ (position #1) and _______ (position #2)
(the "A350 Aircraft"), have taken place at Toulouse, France on the ____ day of
_____________, ____.

In view of said inspections having been carried out with satisfactory results,
and with any remaining discrepancies note separately, [Designated Buyer] hereby
approves the A350 Aircraft as being in conformity with the provisions of the
Purchase Agreement.

This acceptance does not impair the rights of [buyers] that may be derived from
the warranties relating to the A350 Aircraft set forth in the Purchase
Agreement.

                                   RECEIPT AND ACCEPTANCE OF THE ABOVE-
                                   DESCRIBED A350 AIRCRAFT ACKNOWLEDGED

                                   [BUYERS]

                                   By: ___________________________

                                   Its: __________________________

                                                                          Exh. D
AWE/USA-A350
                           PRIVILEGED AND CONFIDENTIAL
<PAGE>

                                                                       EXHIBIT E

                                  BILL OF SALE
                              FOR A350-800 AIRCRAFT

Know all persons by these presents that AVSA, S.A.R.L. ("AVSA"), a societe a
responsabilite limitee organized and existing under the laws of the Republic of
France, whose address is 2 rond-point Maurice Bellonte, 31700 Blagnac, FRANCE,
is the owner of the full legal and beneficial title to the following airframe
(the "AIRFRAME"), the attached engines as specified (the "ENGINES") and all
appliances, components, parts, instruments, accessories, furnishings, modules
and other equipment of any nature, excluding buyer furnished equipment,
incorporated therein, installed thereon or attached thereto on the date hereof
(the "PARTS"):

MANUFACTURER OF AIRFRAME:                        MANUFACTURER OF ENGINES:

AIRBUS S.A.S                                     [GENERAL ELECTRIC]

MODEL:     A350-800                              MODEL:    GEnx

MANUFACTURER'S                                   SERIAL NUMBERS:
SERIAL NUMBER:       [     ]                     LH :      [     ]
REGISTRATION NO:     [     ]                     RH :      [     ]

The Airframe, Engines and Parts are hereafter together referred to as the
aircraft (the "A350 AIRCRAFT").

AVSA does this ___ day of _______________ sell, transfer and deliver all of its
above described rights, title and interest to the A350 Aircraft to the following
company forever, said A350 Aircraft to be the property thereof:

[BUYERS]

AVSA hereby warrants to the "Buyers" its successors and assigns that it has on
the date hereof good and lawful right to sell, deliver and transfer title to the
A350 Aircraft to the Buyers and that there is hereby conveyed to the Buyers on
the date hereof good, legal and valid title to the A350 Aircraft, free and clear
of all liens, claims, charges, encumbrances and rights of others, and that it
will warrant and defend such title forever against all claims and demands
whatsoever.

IN WITNESS WHEREOF, the undersigned has caused this instrument to be executed by
its duly authorized representative this ______ day of [         ]

AVSA, S.A.R.L.
By:
Title:
Signature:
Location:

                                                                        Exh. E-1

AWE/USA-A350

                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

                                                                       EXHIBIT E

                                  BILL OF SALE
                              FOR A350-900 AIRCRAFT

Know all persons by these presents that AVSA, S.A.R.L. ("AVSA"), a societe a
responsabilite limitee organized and existing under the laws of the Republic of
France, whose address is 2 rond-point Maurice Bellonte, 31700 Blagnac, FRANCE,
is the owner of the full legal and beneficial title to the following airframe
(the "AIRFRAME"), the attached engines as specified (the "ENGINES") and all
appliances, components, parts, instruments, accessories, furnishings, modules
and other equipment of any nature, excluding buyer furnished equipment,
incorporated therein, installed thereon or attached thereto on the date hereof
(the "PARTS"):

MANUFACTURER OF AIRFRAME:                        MANUFACTURER OF ENGINES:

AIRBUS S.A.S                                     [GENERAL ELECTRIC]

MODEL:     A350-900                              MODEL:    GEnx

MANUFACTURER'S                                   SERIAL NUMBERS:
SERIAL NUMBER:       [     ]                     LH :      [     ]
REGISTRATION NO:     [     ]                     RH :      [     ]

The Airframe, Engines and Parts are hereafter together referred to as the
aircraft (the "A350 AIRCRAFT").

AVSA does this ___ day of _______________ sell, transfer and deliver all of its
above described rights, title and interest to the A350 Aircraft to the following
company forever, said A350 Aircraft to be the property thereof:

[BUYERS]

AVSA hereby warrants to the "Buyers" its successors and assigns that it has on
the date hereof good and lawful right to sell, deliver and transfer title to the
A350 Aircraft to the Buyer and that there is hereby conveyed to the Buyers on
the date hereof good, legal and valid title to the A350 Aircraft, free and clear
of all liens, claims, charges, encumbrances and rights of others and that it
will warrant and defend such title forever against all claims and demands
whatsoever.

IN WITNESS WHEREOF, the undersigned has caused this instrument to be executed by
its duly authorized representative this ______ day of [          ]

AVSA, S.A.R.L.
By:
Title:
Signature:
Location:

                                                                        Exh. E-2

AWE/USA-A350

                           PRIVILEGED AND CONFIDENTIAL
<PAGE>

                                                                       EXHIBIT F

                                    EXHIBIT F

                              TECHNICAL DATA INDEX

AWE/USA -A350                                                           Exh. F-1
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

                                                                       EXHIBIT F

                              TECHNICAL DATA INDEX

Where applicable, data will be established in general compliance with ATA
Specification 2200 (iSpec2200), Information Standards for Aviation Maintenance
(Revision 2003).

The following index identifies the Technical Data provided in support of the
Aircraft.

The explanation of the table is as follows:

NOMENCLATURE                              Self-explanatory.

ABBREVIATED DESIGNATION (Abbr)            Self-explanatory.

AVAILABILITY (Avail)

Technical Data can be available :

-     ON-LINE (ON) through the relevant Service on Airbus Customer Portal

      and / or

-     OFF-LINE (OFF) through the most suitable means applicable to the size of
      the concerned document (e.g CD or DVD).

FORMAT (Form)

Following formats can be used :

-     SGML - Standard Generalized Mark-up Language, which allows further data
      processing by the Buyer.

-     XML - Evolution of the SGML format to cope with WEB technology
      requirements.

-     PDF (Portable Document Format) -Adobe format allowing data consultation.

The Standard functions of PDF are as follows:

  -     Viewing: Page based presentation identical to paper and film,

  -     Functions like zooming, 'full page'/'fit screen' layouts are available,

AWE/USA -A350                                                           Exh. F-2
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

                                                                       EXHIBIT F

  -     Output: Copy/paste function and printing,

  -     Search functions: Bookmarks, and word search (full text search),

  -     Requires standard PC and Acrobat Reader.

-     Advanced Consultation Tool, which comes with the relevant consultation and
      navigation system.

-     Advanced Customization Tool - FOSP (Flight Operations Standard Package) is
      the advanced customization tool to be used by the Buyer to browse a
      manual, customize a manual in accordance with its own operational or
      regulatory requirements and/or publish a manual in OIS format.

TYPE     C    CUSTOMIZED. Refers to manuals that are applicable to an
              individual Airbus customer/operator fleet or aircraft.

         G    GENERIC. Refers to manuals that are applicable for all
              Airbus aircraft types/models/series.

         E    ENVELOPE. Refers to manuals that are applicable to a whole
              group of Airbus customers for a specific aircraft
              type/model/series.

QUANTITY (Qty)    Self-explanatory for physical media.

DELIVERY (Deliv)  Delivery refers to scheduled delivery dates and is expressed
                  in either the number of corresponding days prior to first
                  Aircraft Delivery, or nil (0) corresponding to the first
                  Delivery day.

                  The number of days indicated shall be rounded up to the next
                  regular revision release date.

AWE/USA -A350                                                           Exh. F-3
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

                                                                       EXHIBIT F
<TABLE>
<CAPTION>
              NOMENCLATURE                     ABBR  AVAIL      FORM      TYPE  QTY DELIV                    COMMENTS
----------------------------------------      ------ -----  ------------- ----  --- -----  -----------------------------------------
<S>                                           <C>    <C>    <C>           <C>   <C> <C>    <C>
  OPERATIONAL MANUALS AND DATA

Flight Crew Operating Manual /                FCOM   OFF      Advanced     C         180   Preliminary Customized FCOM reflecting
Quick Reference Leaflet (QRL)                               Customization                  the status of Aircraft as known to Airbus
                                                                Tool                       at thattime/a final customized version
                                                                                           will be made available through revision
                                                                                           service prior to Aircraft delivery.

                                              FCOM   ON        Advanced    C    N/A  90
                                                            Customization
                                                                Tool

                                              FCOM   ON         XML        C    N/A  90

                                              FCOM   OFF        XML        C     1   90

                                              QRL    OFF       Paper       C     *   90    * Two per Aircraft at Delivery + 20
                                                                                           copies per Aircraft

                                              QRL    ON         XML        C    N/A  90

                                              QRL    OFF        XML        C     1   90

Cabin Crew Operating Manual                   CCOM   OFF      Advanced     C         90
                                                            Customization
                                                                Tool

                                              CCOM   ON       Advanced     C    N/A  90
                                                            Customization
                                                                Tool

                                              CCOM   ON        XML         C    N/A  90

                                              CCOM   OFF       XML         C     1   90

Flight Manual / Configuration Deviation       FM/CDL OFF     (PDF*)        C          0    (*) plus one copy per Aircraft at
List                                                                                       Delivery under PDF or securised format,
                                                                                           as agreed with the Airworthiness
                                                                                           Authorities

                                              FM/CDL ON       Advanced     C    N/A   0
                                                            Customization
                                                                Tool

                                              FM/CDL ON         XML        C    N/A   0

                                              FM/CDL OFF        XML        C     1    0
</TABLE>

AWE/USA -A350                                                           Exh. F-4
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

                                                                       EXHIBIT F
<TABLE>
<CAPTION>
               NOMENCLATURE                    ABBR  AVAIL       FORM     TYPE  QTY DELIV                 COMMENTS
----------------------------------------      ------ -----  ------------- ----  --- -----  -----------------------------------------
<S>                                           <C>    <C>    <C>           <C>   <C> <C>    <C>
  OPERATIONAL MANUALS AND DATA  (CONT'D)

Master Minimum Equipment List                 MMEL   OFF       (PDF *)      C        0     (*) plus one copy per Aircraft at
                                                                                           Delivery under PDF or securised format,
                                                                                           as agreed with the Airworthiness
                                                                                           Authorities

                                              MMEL   OFF      Advanced      C       180
                                                            Customization
                                                                Tool

                                              MMEL   ON       Advanced      C   N/A 180
                                                            Customization
                                                                Tool

                                              MMEL   ON          XML        C   N/A 180

                                              MMEL   OFF         XML        C    1  180

Trim Sheet                                    TS     OFF       WordDoc      C        0     Office Automation format (.doc) for
                                                                                           further processing by the Buyer

                                              TS     ON        WordDoc      C   N/A  0

Weight and Balance Manual                     WBM    OFF       (PDF *)      C        0     (*) plus one copy per Aircraft at
                                                                                           Delivery under PDF or securised format,
                                                                                           as agreed with the Airworthiness
                                                                                           Authorities

                                              WBM    OFF      Advanced      C       90
                                                            Customization
                                                                Tool

                                              WBM    ON       Advanced      C   N/A 90
                                                            Customization
                                                                Tool

                                              WBM    ON          XML        C   N/A 90

                                              WBM    OFF         XML        C    1  90
</TABLE>

AWE/USA -A350                                                           Exh. F-5
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

                                                                       EXHIBIT F
<TABLE>
<CAPTION>
                 NOMENCLATURE                 ABBR   AVAIL     FORM       TYPE  QTY DELIV  COMMENTS
----------------------------------------      ------ -----  ------------- ----  --- -----  --------
<S>                                           <C>    <C>    <C>           <C>   <C> <C>    <C>
 OPERATIONAL MANUALS AND DATA (CONT'D)

Performance Engineer's Programs               PEP    OFF      Advanced     C         90
                                                            Consultation
                                                                Tool

                                              PEP     ON      Advanced     C    N/A  90
                                                            Consultation
                                                                Tool

Performance Programs Manual                   PPM    OFF      Advanced     C         90
                                                            Consultation
                                                                Tool

                                              PPM     ON      Advanced     C    N/A 90
                                                            Consultation
                                                               Tool
</TABLE>

AWE/USA -A350                                                           Exh. F-6
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

                                                                       EXHIBIT F
<TABLE>
<CAPTION>
              NOMENCLATURE                   ABBR    AVAIL    FORM        TYPE  QTY DELIV               COMMENTS
---------------------------------------- ----------- -----  ------------- ----  --- -----  -----------------------------------------
<S>                                      <C>         <C>    <C>           <C>   <C> <C>    <C>
  MAINTENANCE AND ASSOCIATED MANUALS

AirN@v MAINTENANCE, including :          AirN@v       ON      Advanced     C     N/A  90
Aircraft Maintenance Manual              Maintenance        Consultation
Illustrated Parts Catalog (Airframe)                             Tool
Illustrated Parts Catalog (Powerplant)
Trouble Shooting Manual                  AirN@v      OFF      Advanced     C      20  90   Recommended basic delivery quantity
Aircraft Schematics Manual               Maintenance        Consultation
Aircraft Wiring Lists                                         Tool on
Aircraft Wiring Manual                                          DVD
Electrical Standard Practices Manual
+ Associated Data >
Consumable Material List
Standards Manual

Aircraft Maintenance Manual              AMM          ON        SGML       C     N/A  90

                                         AMM         OFF        SGML       C          90   If selected by the Buyer, SGML format
                                                                                           will not be automatically supplied.
                                                                                           Effective delivery will only take place
                                                                                           upon explicit request from the Buyer

Aircraft Schematics Manual               ASM          ON        SGML       C     N/A  90

                                         ASM         OFF        SGML       C          90   See comments under AMM SGML

Aircraft Wiring Lists                    AWL          ON        SGML       C     N/A  90

                                         AWL         OFF        SGML       C          90   See comments under AMM SGML

Aircraft Wiring Manual                   AWM          ON        SGML       C     N/A  90

                                         AWM         OFF        SGML       C          90   See comments under AMM SGML

Consumable Material List                 CML          ON        SGML       G     N/A 180

                                         CML         OFF        SGML       G         180   See comments under AMM SGML
</TABLE>

AWE/USA -A350                                                           Exh. F-7
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

                                                                       EXHIBIT F
<TABLE>
<CAPTION>
            NOMENCLATURE                       ABBR  AVAIL      FORM      TYPE  QTY DELIV                 COMMENTS
----------------------------------------      ------ -----  ------------- ----  --- -----  -----------------------------------------
<S>                                           <C>    <C>    <C>           <C>   <C> <C>    <C>
 MAINTENANCE AND ASSOCIATED
   MANUALS (CONT'D)

AirN@v ENGINEERING, including                 EDCI*  ON       Advanced     C    N/A  90    AirN@v Engineering is an  "Engineering
Airworthiness Directives / AD                               Consultation                   Documentation Combined Index" providing
Consignes de Navigabilite / CN                                   Tool                      an access to some document indexes and
 (French DGAC)                                                                             contents and cross-references between
All Operator Telex / AOT                                                                   such documents
Operator Information Telex / OIT
Flight Operator Telex / FOT                   EDCI*  OFF      Advanced     C    20   90
Modification / MOD                                          Consultation
Modification Proposal / MP                                      Tool
Service Bulletin / SB
Service Information Letter / SIL
Technical Follow-Up / TFU
Vendor Service Bulletin / VSB

Electrical Load Analysis                      ELA    OFF      PDF/RTF/     C        +30    One ELA supplied for each Aircraft,
                                                                 XLS                       delivered one month after Aircraft
                                                                                           Delivery PDF File + Office automation
                                                                                           format RTF & Excel file delivered on one
                                                                                           single CD for ELA updating by the Buyer

Electrical Standard Practices Manual          ESPM   ON         SGML       G    N/A  90

                                              ESPM   OFF        SGML       G         90    See  comments under AMM SGML

                                              ESPM   ON          PDF       G    N/A  90

                                              ESPM   OFF        CD-P       G         90

Electrical Standard Practices booklet         ESP    OFF         P2*       G         90    *Refers to a two-side printed document

Illustrated Parts Catalog (Airframe)          IPC    ON         SGML       C    N/A  90

                                              IPC    OFF        SGML       C         90    See comments under AMM SGML

Illustrated Parts Catalog  (Powerplant)       PIPC   ON         SGML       C    N/A  90

                                              PIPC   OFF        SGML       C         90    See comments under AMM SGML
</TABLE>

AWE/USA -A350                                                           Exh. F-8
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

                                                                       EXHIBIT F
<TABLE>
<CAPTION>
             NOMENCLATURE                   ABBR     AVAIL       FORM           QTY DELIV               COMMENTS
---------------------------------------- ----------- -----  -------------       --- -----  --------------------------------------
<S>                                      <C>         <C>    <C>            <C>  <C> <C>    <C>
  MAINTENANCE AND ASSOCIATED
   MANUALS (CONT'D)

AirN@v PLANNING, including:              AirN@v       ON      Advanced     E    N/A   90*  With first AMM issue
Maintenance Planning Document            Planning           Consultation                   Upon Customer's request, the MPD may
                                                               Tool                        be supplied

                                         AirN@v      OFF      Advanced     E    20    90*
                                         Planning           Consultation
                                                            Tool on DVD

Maintenance Planning Document            MPD          ON        SGML       E    N/A  360

                                         MPD         OFF        SGML       E         360   See comments under AMM SGML

                                         MPD         OFF        PDF        E     *   360   * Supplied upon Buyer's request only
                                                                                           Contains PDF , Excel  File and TSDF /
                                                                                           Task Structured Data File for further
                                                                                           processing

Maintenance Review Board Report          MRBR         ON        PDF        E    N/A  360   MRB Report ocument includes the
                                                                                           Certification Maintenance Requirements
                                                                                           (CMR) and Airworthiness Limitation
                                                                                           Items (ALI) documents.

                                         MRBR        OFF        CD-P       E         360

Support Equipment Summary                SES          ON        PDF        G    N/A  360

                                         SES         OFF*       CD-P       G         360   * Contained on one single CD with TEI/
                                                                                            TEM

Tool and Equipment Drawings              TED          ON      Advanced     E    N/A  360   On-line Consultation from Engineering
                                                            Consultation                   Drawings Service
                                                                Tool

Tool and Equipment Index                 TEI          ON        PDF        E    N/A  360

                                         TEI         OFF*       CD-P       E         360   *Contained on one single CD with TEM
                                                                                            & SES

Illustrated Tool and Equipment Manual    TEM          ON        PDF        E    N/A  360

                                         TEM         OFF*       CD-P       E         360   * Contained on one single CD with TEI
                                                                                            & SES

Trouble Shooting Manual                  TSM          ON        SGML       C    N/A   90

                                         TSM         OFF        SGML       C          90   See comments under AMM SGML
</TABLE>

AWE/USA -A350                                                           Exh. F-9
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

                                                                       EXHIBIT F
<TABLE>
<CAPTION>
            NOMENCLATURE                  ABBR       AVAIL     FORM       TYPE  QTY DELIV               COMMENTS
---------------------------------------- -------     -----  ----------    ----  --- -----  --------------------------------------
<S>                                      <C>         <C>    <C>           <C>   <C> <C>    <C>
  STRUCTURAL MANUALS

AirN@v REPAIR , including :              AirN@v       ON     Advance       E    N/A  90.
Structural Repair Manual                 Repair             Consultati
Nacelle Structural Repair Manual                             on Tool
 ( integrated in Airbus SRM )
Non Destructive Testing Manual           AirN@v      OFF      Advance      E    20*  90.
+ Associated Data >                      Repair              Consultati
Consumable Material List                                      on Tool
Standards Manual                                               On DVD                      *Recommended basic delivery quantity

Structural Repair Manual                 SRM          ON       SGML        E    N/A   90

                                         SRM         OFF       SGML        E          90   If selected by the Buyer, SGML format
                                                                                           will not be automatically supplied.
                                                                                           Effective delivery will only take place
                                                                                           upon explicit request from the Buyer

Nacelle Structural Repair Manual         NSRM         ON       SGML        E    N/A   90
(integrated in Airbus SRM)

                                         NSRM        OFF       SGML        E          90   See comments under SRM SGML

Nondestructive Testing Manual            NTM          ON       SGML        E    N/A   90

                                         NTM         OFF       SGML        E          90   See comments under SRM SGML
</TABLE>

AWE/USA -A350                                                          Exh. F-10
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

                                                                       EXHIBIT F
<TABLE>
<CAPTION>
          NOMENCLATURE                    ABBR       AVAIL      FORM      TYPE  QTY DELIV               COMMENTS
---------------------------------------- ------      -----  ------------- ----  --- -----  -----------------------------------------
<S>                                      <C>         <C>    <C>           <C>   <C> <C>    <C>
   OVERHAUL DATA

AirN@v SHOP , including :                AirN@v       ON      Advance      E    N/A  90
Component Maintenance Manual -            Shop              Consultation
 Manufacturer                                                  Tool
Duct Repair Manual
+ Associated Data >                      AirN@v      OFF      Advance      E    20
Consumable Material List                  Shop              Consultation
Standards Manual                                               Tool
                                                              On DVD

Component Maintenance Manual -           CMMM         ON        PDF        E    N/A  90
Manufacturer                                                                               Supplied upon Buyer's request

                                         CMMM        OFF       CD-P        E         90

Component Maintenance Manual -           CMMM         ON       SGML        E    N/A  90
Manufacturer

                                         CMMM        OFF       SGML        E         90    If selected by the Buyer, SGML format
                                                                                           will not be automatically supplied.
                                                                                           Effective delivery will only take place
                                                                                           upon explicit request from the Buyer

Duct Repair Manual                       DRM          ON        PDF        E    N/A  90
                                                                                           Supplied upon Buyer's request

                                         DRM         OFF       CD-P        E         90

Duct Repair Manual                       DRM          ON       SGML        E    N/A  90

                                         DRM         OFF       SGML        E         90    If selected by the Buyer, SGML format
                                                                                           will not be automatically supplied.
                                                                                           Effective delivery will only take place
                                                                                           upon explicit request from the Buyer

Fuel Pipe Repair Manual                  FPRM         ON        PDF        G    N/A  90

                                         FPRM        OFF       CD-P        G         90

Component Documentation Status           CDS          ON      Advanced     C    N/A  90    Revised until 180 days after Aircraft
                                                            Consultation                     Delivery
                                                               Tool

                                         CDS         OFF     Advanced      C         90
                                                            Consultation
                                                                Tool
</TABLE>

AWE/USA -A350                                                          Exh. F-11
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

                                                                       EXHIBIT F

<TABLE>
<CAPTION>
             NOMENCLATURE                      ABBR  AVAIL   FORM         TYPE  QTY DELIV                    COMMENTS
----------------------------------------       ----- -----   ----         ----  --- -----  ----------------------------------------
<S>                                            <C>   <C>     <C>          <C>   <C> <C>    <C>
   OVERHAUL DATA CONT'D

Component Evolution List                       CEL    ON     PDF           G    N/A   -    Available on-line through Airbus Portal

                                               CEL   OFF     CD-P          G          -
</TABLE>

AWE/USA -A350                                                          Exh. F-12
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

                                                                       EXHIBIT F
<TABLE>
<CAPTION>
             NOMENCLATURE                 ABBR       AVAIL     FORM       TYPE  QTY DELIV                COMMENTS
----------------------------------------  ----       -----  ------------- ----  --- -----  --------------------------------
<S>                                       <C>        <C>    <C>           <C>   <C> <C>    <C>
  ENGINEERING DOCUMENTS

Installation and Assembly Drawings        IAD         ON     Advanced       C   N/A   0    On-line Consultation from
(mechanical)                                                Consultation                   Engineering Drawings Service
                                                               Tool

Parts Usage (Effectivity)                 PU          ON      Advanced      C   N/A   0    On-line Consultation from
                                                            Consultation                   Engineering Drawings Service
                                                               Tool

Parts List                                PL          ON      Advanced      C   N/A   0    On-line Consultation from
                                                            Consultation                   Engineering Drawings Service
                                                               Tool

Standards Manual                          SM          ON       SGML         E   N/A  90

                                          SM         OFF       SGML         E        90    If selected by the Buyer, SGML
                                                                                           format will not be automatically
                                                                                           supplied. Effective delivery will
                                                                                           only take place upon explicit
                                                                                           request from the Buyer

Process and Material Specification        PMS         ON      PDF          G    N/A   0

                                          PMS        OFF      CD-P         G          0
</TABLE>

AWE/USA -A350                                                          Exh. F-13
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

                                                                       EXHIBIT F

<TABLE>
<CAPTION>
              NOMENCLATURE                 ABBR      AVAIL      FORM      TYPE  QTY DELIV                  COMMENTS
---------------------------------------- --------    -----  ------------- ----  --- -----  -----------------------------------------
<S>                                      <C>         <C>    <C>           <C>   <C> <C>    <C>
MISCELLANEOUS PUBLICATIONS

Aircraft Characteristics for Airport     AC/MFP        ON       PDF         E   N/A 360
and Maintenance Facility Planning

ATA Index                                ATI           ON       PDF         E   N/A 360

CADETS (Technical Publications           CADETS        OFF    Advanced      G    20 360
Training)                                                   Consultation
                                                                Tool

Aircraft Recovery Manual                 ARM           ON       PDF         E   N/A  90

                                         ARM           OFF      CD-P        E        90

Aircraft Rescue & Firefighting Chart     ARFC          ON       PDF         E       180

                                         ARFC          OFF      P1*         E   N/A 180    *Refers to a one-side printed document

Cargo Loading System Manual              CLS           ON       PDF         E   N/A 180

List of Applicable Publications          LAP           ON       PDF         C   N/A  90

List of Radioactive and Hazardous
 Elements                                LRE           ON       PDF         G   N/A  90

                                         LRE           OFF      CD-P        G        90

Livestock Transportation Manual          LTM           ON     Advanced      E   N/A  90
                                                            Consultation                   Includes a Livestock Transportation and
                                                                Tool                       Calculation Tool

                                         LTM           OFF    Advanced      E        90
                                                            Consultation
                                                                Tool

Service Bulletins                        SB            ON     Advanced      C   N/A  0
                                                              Cons.Tool

                                         SB            ON       SGML        C   N/A  0

                                         SB            OFF      SGML        C        0

                                         SB            ON       PDF         C   N/A  0

                                         SB            OFF      CD-P        C        0
</TABLE>

AWE/USA -A350                                                          Exh. F-14
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

                                                                       EXHIBIT F
<TABLE>
<CAPTION>
                NOMENCLATURE             ABBR        AVAIL     FORM       TYPE  QTY DELIV            COMMENTS
---------------------------------------- ----        -----  ------------- ----  --- -----  -------------------------------
<S>                                      <C>         <C>    <C>           <C>   <C> <C>    <C>
   MISCELLANEOUS PUBLICATIONS

Supplier Product Support Agreements 2000 SPSA         ON        PDF        G    N/A  360   Based on General Conditions of
                                                                                           Purchase (GCP) 2000 Issue 5

                                         SPSA        OFF        CD-P       G         360

Transportability Manual                  TM           ON        PDF        G    N/A  180

                                         TM          OFF        CD-P       G         180

Vendor Information Manual                VIM          ON      Advanced     G    N/A  360
                                                            Consultation
                                                                Tool

                                         VIM         OFF      Advanced     G         360
                                                            Consultation
                                                                Tool

                                         VIM/GSE      ON      Advanced     G    N/A  360
                                                            Consultation
                                                                Tool
</TABLE>

AWE/USA -A350                                                          Exh. F-15
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>
                                                                       EXHIBIT G

            *** CERTAIN CONFIDENTIAL INFORMATION HAS BEEN OMITTED AND
                FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
                    COMMISSION PURSUANT TO RULE 24b-2 OF THE
                   SECURITIES EXCHANGE ACT OF 1934, AS AMENDED

                          SELLER PRICE REVISION FORMULA

1     BASE PRICE

      The Base Price of the A350-800 Aircraft is quoted in Clause 3.1.1 and of
      the A350-900 Aircraft in clause 3.1.2 of the Agreement. Each Base Price is
      subject to adjustment for changes in economic conditions as measured by
      data obtained from the US Department of Labor, Bureau of Labor Statistics,
      and in accordance with the provisions hereof.

2     BASE PERIOD

      The Base Price of the Aircraft has been established in accordance with the
      average economic conditions prevailing in December 2003, January 2004,
      February 2004 and corresponding to a theoretical delivery in January 2005
      as defined by [...***...] and [...***...] index values indicated
      hereafter.

      [...***...] and [...***...] index values indicated herein will not be
      subject to any revision.

3     INDEXES

      Labor Index: [...***...]

      Material Index: [...***...]

***Confidential Treatment Requested

AWE/USA-A350                                                             Exh G-1

                          PRIVILEGED AND CONFIDENTIAL

<PAGE>

                                                                       EXHIBIT G

4     REVISION FORMULA

      [...***...]

5     GENERAL PROVISIONS

5.1   Roundings

      The [...***...] average and the [...***...] average will be computed to
      the first decimal. If the next succeeding place is five (5) or more, the
      preceding decimal place shall be raised to the next higher figure.

      Each quotient shall be rounded to the nearest ten-thousandth (4 decimals).
      If the next succeeding place is five (5) or more, the preceding decimal
      place shall be raised to the next higher figure.

***Confidential Treatment Requested

AWE/USA-A350                                                             Exh G-2

                          PRIVILEGED AND CONFIDENTIAL

<PAGE>

                                                                       EXHIBIT G

      The final factor will be rounded to the nearest ten-thousandth
      (4 decimals).

      The final price will be rounded to the nearest whole number (0.5 or more
      rounded to 1).

5.2   Substitution of Indexes for Aircraft Price Revision Formula

      If;

      (i)   the United States Department of Labor substantially revises the
            methodology of calculation of the labor index [...***...] or
            material index [...***...] as used in this Exhibit G, or

      (ii)  the United States Department of Labor discontinues, either
            temporarily or permanently, such labor index [...***...] or
            material index [...***...] index, or

      (iii) the data samples used to calculate such labor index [...***...] or
            material index [...***...] are substantially changed;

      the Seller will select a substitute index for inclusion in the Seller
      Price Revision Formula (the "Substitute Index").

      The Substitute Index will reflect as closely as possible the actual
      variance of the labor costs or of the material costs used in the
      calculation of the original labor index [...***...] or material index
      [...***...] as the case may be.

      As a result of the selection of the Substitute Index, the Seller will make
      an appropriate adjustment to the Seller Price Revision Formula to combine
      the successive utilization of the original labor index [...***...] or
      material index [...***...] (as the case may be) and of the Substitute
      Index.

5.3   Final Index Values

      The Index values as defined in Paragraph 4 above will be considered final
      and no further adjustment to the basic prices as revised at delivery of
      the applicable Aircraft will be made after delivery of the applicable
      Aircraft for any subsequent changes in the published index values.

***Confidential Treatment Requested

AWE/USA-A350                                                             Exh G-3

                          PRIVILEGED AND CONFIDENTIAL
<PAGE>
                                                                      EXHIBIT H

              TERMS AND CONDITIONS FOR LICENSE FOR USE OF SOFTWARE

These Terms and Conditions for License for Use of Software (the "LICENSE
CONDITIONS") will govern the license granted by AIRBUS NORTH AMERICA CUSTOMER
SERVICES, INC. a Delaware incorporated company whose registered office is at 198
Van Buren Street, Suite 300, Herndon, VA 20170 ("ANACS" or "LICENSOR") to, a [ ]
corporation whose principal office is located at [_______________________] (the
"LICENSEE") under a separate Software License and Product Supply Agreement (the
"SLPA").

WHEREAS ANACS is engaged in the business of supplying products and services to
North American and South American owners and operators of aircraft manufactured
by Airbus and the designees of such owners and operators, and

WHEREAS Airbus has developed and owns certain software and ANACS was granted a
license to use such Software and to sublicense the same, under the License
Conditions, to qualified entities who have entered into a SLPA with ANACS, and

WHEREAS, the Licensee has entered, or intends to enter into a SLPA and is
willing to accept the License Conditions,

NOW THEREFORE IT IS AGREED AS FOLLOWS:

[...***...]

*** Confidential Treatment Requested

AWE/USA -A350                                                          Exh H - 1

                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

            ***CERTAIN CONFIDENTIAL INFORMATION HAS BEEN OMITTED AND
                FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
                    COMMISSION PURSUANT TO RULE 24b-2 OF THE
                   SECURITIES EXCHANGE ACT OF 1934, AS AMENDED

                             LETTER AGREEMENT NO. 1

                                                        As of September 27, 2005

US Airways Group, Inc.
US Airways, Inc.
America West Airlines, Inc.
4000 East Sky Harbor Boulevard
Phoenix, AZ 85034

Re: SPARE PARTS PROCUREMENT

Ladies and Gentlemen,

US Airways, Inc., America West Airlines, Inc. and US Airways Group, Inc. (the
"Buyers"), and AVSA, S.A.R.L. (the "Seller"), have entered into an Airbus A350
Purchase Agreement dated as of the date hereof (the "Agreement"), which covers,
among other things, the sale by the Seller and the purchase by the Buyers of
certain Aircraft, under the terms and conditions set forth in said Agreement.
The Buyers and the Seller have agreed to set forth in this Letter Agreement No.
1 (the "Letter Agreement") certain additional terms and conditions regarding the
sale of the Aircraft. Capitalized terms used herein and not otherwise defined in
this Letter Agreement will have the meanings assigned thereto in the Agreement.
Technical and trade terms used but not defined herein or in the Agreement will
be defined as generally accepted in the airline and/or aircraft manufacturing
industries. The terms "herein," "hereof" and "hereunder" and words of similar
import refer to this Letter Agreement.

All of the parties agree that this Letter Agreement will constitute an integral,
nonseverable part of said Agreement, that the provisions of said Agreement are
hereby incorporated herein by reference, and that this Letter Agreement will be
governed by the provisions of said Agreement, except that if the Agreement and
this Letter Agreement have specific provisions which are inconsistent, the
specific provisions contained in this Letter Agreement will govern.

                                                                           LA1-1

AWE/USA-A350

                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

                                    CONTENTS

PARAGRAPHS

1  -  GENERAL

2  -  INITIAL PROVISIONING

3  -  STORES

4  -  DELIVERY

5  -  PRICE

6  -  PAYMENT PROCEDURES AND CONDITIONS

7  -  TITLE

8  -  PACKAGING

9  -  DATA RETRIEVAL

10 -  BUY-BACK

11 -  WARRANTIES

12 -  LEASING

[...***...]

14 -  TERMINATION

15 -  ASSIGNMENT

16 -  COUNTERPARTS

                                                                           LA1-2
***Confidential Treatment Requested

AWE/USA-A350

                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

1. GENERAL

1.1   Material

      This Letter Agreement covers the terms and conditions for the services
      offered by the Seller to the Buyers in respect of the Aircraft spare parts
      and other equipment ("Material Support") listed below in Paragraphs 1.1(a)
      through 1.1(f) ("Material") and is intended by the parties to be and will
      constitute an agreement of sale of all Material furnished to the Buyers by
      the Seller pursuant hereto, except as to Material leased to the Buyers
      pursuant to Paragraph 12 of this Letter Agreement.

      The Material will comprise:

      (a)   Seller Parts (defined as industrial proprietary components,
            equipment, accessories or parts of the Manufacturer manufactured to
            the detailed design of the Manufacturer or a subcontractor of it and
            bearing official part numbers of the Manufacturer or material for
            which the Seller has exclusive sales rights in the United States).

      (b)   Supplier Parts classified as Repairable Line Maintenance Parts in
            accordance with SPEC 2000.

      (c)   Supplier Parts classified as Expendable Line Maintenance Parts in
            accordance with SPEC 2000.

      (d)   Ground Support Equipment (GSE) and Specific (To-Type) tools.

      (e)   Hardware and standard material.

      (f)   Consumables and raw material as a package.

      It is expressly understood that Seller Parts will not include parts
      manufactured pursuant to a parts manufacturing authority.

      Material covered under Paragraphs 1.1(e) and 1.1(f) is available only as a
      package when supplied as part of the Initial Provisioning defined in
      Paragraph 1.2.1(a).

                                                                           LA1-3

AWE/USA-A350

                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

1.2   Scope of Material Support

1.2.1 The Material Support to be provided by the Seller hereunder covers the
      following:

      (a)   all Material purchased by the Buyers from the Seller during the
            Initial Provisioning Period (defined below in Paragraph 2) (the
            "Initial Provisioning") and all items in Paragraphs 1.1(a) through
            1.1(d) for purchases additional to the Initial Provisioning, and

      (b)   the Seller's leasing of Seller Parts to the Buyers for the Buyers'
            use on its Aircraft in commercial air transport service as set forth
            in Paragraph 12 of this Letter Agreement.

1.2.2 Propulsion Systems, including associated parts and spare parts therefore,
      are not covered under this Letter Agreement and will be subject to direct
      negotiations between the Buyers and the Propulsion Systems
      manufacturer(s). [...***...]

1.2.3 During a period commencing on the date hereof and continuing as long as at
      least five (5) aircraft of the type of the Aircraft are operated in
      commercial air transport service of which, at least one (1) is operated by
      the Buyers (the "Term"), the Seller will maintain or cause to be
      maintained such stock of Seller Parts as the Seller deems reasonable and
      will furnish at reasonable prices Seller Parts adequate to meet the
      Buyers' needs for maintenance of the Aircraft. Such Seller Parts will be
      sold and delivered in accordance with Paragraphs 4 and 5 of this Letter
      Agreement, upon receipt of the Buyers' orders.

      The Seller will use its reasonable efforts to obtain a similar service
      from all Suppliers of parts that are originally installed on the Aircraft
      and not manufactured by the Seller.

1.3   Purchase Source of Material

      The Buyers agree to purchase from the Seller's designee, ANACS, the Seller
      Parts required for the Buyers' own needs during the Term, provided that
      this Paragraph 1.3 will not in any way prevent the Buyers from resorting
      to the stocks of Seller Parts of other operators using A350 aircraft or
      from purchasing items equivalent to Seller Parts from said operators or
      from distributors, on the condition that said Seller Parts

***Confidential Treatment Requested                                        LA1-4

AWE/USA-A350

                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

      have been designed and manufactured by, or obtained from the Seller, and,
      provided further that this Paragraph 1.3 will not prevent the Buyers from
      exercising its rights under Paragraph 1.4 of this Letter Agreement.

1.4   Manufacture of Material by the Buyer

1.4.1 The provisions of Paragraph 1.3 of this Letter Agreement notwithstanding,
      the Buyers may manufacture or have manufactured Seller Parts for its own
      use or may purchase for its own use Seller Parts from any source other
      than those listed in Paragraph 1.3.1 in the following cases:

      (a)   after expiration of the Term, provided that at such time the Seller
            is out of stock of a required Seller Part;

      (b)   at any time, to the extent Seller Parts are needed to effect AOG
            repairs on any Aircraft and are not available from the Seller within
            a lead time shorter than or equal to the time in which the Buyers
            can procure said Seller Parts from another source, provided the
            Buyers will sell or lease such Seller Parts only if they are
            assembled in an Aircraft that is sold or leased;

      (c)   at any time, if the Seller fails to fulfill its obligations with
            respect to any Seller Parts pursuant to Paragraph 1.2 above within a
            reasonable period after written notice thereof from the Buyers; and

      (d)   at any time, if with respect to certain Seller Parts, the Seller has
            granted, under the Illustrated Parts Catalog supplied in accordance
            with this Letter Agreement, the right of local manufacture of Seller
            Parts.

1.4.2 The Buyers may manufacture the Seller's proprietary tooling from drawings
      and other data supplied by the Seller or the manufacturer.

1.4.3 The rights granted to the Buyers in Paragraph 1.4.1 will not in any way be
      construed as a license, nor will they in any way obligate the Buyers to
      pay any license fee, royalty or obligation whatsoever, nor will they in
      any way be construed to affect the rights of third parties.

1.4.4 The Seller will provide the Buyers with all technical data reasonably
      necessary to manufacture Seller Parts and the Seller's proprietary
      tooling, in the event the Buyers are entitled to do so pursuant to
      Paragraphs 1.4.1 and 1.4.2. The proprietary rights to such technical data
      will be subject to the terms of Clause 14.12 of the Agreement.

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2.    INITIAL PROVISIONING

      The period up to and including the [...***...] day after delivery of
      the last Aircraft will hereinafter be referred to as the Initial
      Provisioning Period.

2.1   Seller-Supplied Data

      The Seller will prepare and supply to the Buyers the following data:

2.1.1 Initial Provisioning Data - Seller

      The Seller will provide to the Buyers initial provisioning data provided
      for in Chapter 1 of ATA 2000 ("Initial Provisioning Data") in a form,
      format and within a time period to be mutually agreed upon.

      A free of charge revision service will be effected every ninety (90) days,
      up to the end of the Initial Provisioning Period.

      The Seller will ensure that Initial Provisioning Data is released to the
      Buyers in time to allow the necessary evaluation time by the Buyers and
      the on-time delivery of ordered Material.

2.1.2 Supplementary Data

      The Seller will provide the Buyers with Local Manufacture Tables (X-File),
      as part of the Illustrated Parts Catalog (Additional Cross-Reference
      Tables), which will be a part of the Initial Provisioning Data package.

2.1.3 Data for Standard Hardware

      The Initial Provisioning Data provided to the Buyers shall include data
      for hardware and standard material.

2.2   Supplier-Supplied Data

2.2.1 General

      Suppliers will prepare and issue CMM parts and IPL parts (T-files) in the
      English language for those Supplier components for which the Buyers has
      elected to receive data and the Seller will make reasonable efforts to
      ensure that the Suppliers take such actions.

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      Said data (initial issue and revisions) will be transmitted to the Buyers
      through the Suppliers and/or the Seller. The Seller will [...***...] not
      be responsible for the substance of such data [...***...]

      The Seller will exert its reasonable efforts to supply Initial
      Provisioning Data to the Buyers in time to allow the necessary evaluations
      by the Buyers and on-time deliveries.

2.2.2 Initial Provisioning Data - Supplier

      Initial Provisioning Data for Supplier products provided for in Chapter 1
      of ATA 2000 will be furnished as mutually agreed upon during a
      Preprovisioning Meeting (defined below), with free of charge revision
      service assured up to the end of the Initial Provisioning Period, or until
      it reflects the configuration of the delivered Aircraft.

2.3   Preprovisioning Meeting

2.3.1 The Seller will organize a meeting (i) at the Manufacturer's spares center
      in Hamburg, Germany ("MSC"), (ii) at ANACS or (iii) at a place to be
      mutually agreed, in order to formulate an acceptable schedule and working
      procedure to accomplish the Initial Provisioning of Material (the
      "Preprovisioning Meeting").

2.3.2 The date of the Preprovisioning Meeting will be mutually agreed upon, but
      it will take place no earlier than three (3) months after the Agreement
      will have taken effect and no later than eighteen (18) months before
      delivery of the Buyers' first Aircraft.

2.4   Initial Provisioning Training

      The Seller will furnish, at the Buyers' request and at no charge to the
      Buyers, training courses related to the Seller's provisioning documents,
      purchase order administration and handling at MSC or at a mutually agreed
      location. The areas covered in these training courses are (i)
      familiarization of the Buyers with the provisioning; (ii)

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      explanation of the technical function as well as the necessary technical
      and commercial Initial Provisioning Data; and (iii) familiarization with
      the Seller's purchase order administration system.

2.5   Initial Provisioning Conference

      The Seller will organize an Initial Provisioning conference at MSC, ANACS
      or a location to be mutually agreed upon that will include participation
      of major Suppliers, as agreed upon during the Pre-provisioning Meeting
      (the "Initial Provisioning Conference").

      Such Initial Provisioning Conference will take place no earlier than eight
      (8) weeks after Buyer Furnished Equipment (BFE) selection or Customer
      Definition Freeze (CDF), whichever last occurs.

2.6   Initial Provisioning Data Compliance

2.6.1 Initial Provisioning Data generated by the Seller and supplied to the
      Buyers will comply with the latest configuration of the Aircraft to which
      such data relate, as known three (3) months before the data are issued.
      Said data will enable the Buyers to order Material conforming to its
      Aircraft as required for maintenance and overhaul.

      This provision will not cover Buyers modifications unknown to the Seller,
      or modifications not agreed to or designed by the Seller.

2.7   Delivery of Initial Provisioning Material

2.7.1 During the Initial Provisioning Period, Material will conform with the
      latest configuration standard of the affected Aircraft and with the
      Initial Provisioning Data transmitted by the Seller. The Seller, in
      addition, will use its reasonable efforts to cause Suppliers to provide a
      similar service for their items. Should the Seller default in this
      obligation, it will immediately replace such Seller parts and/or authorize
      return shipment at no transportation cost to the Buyers. The Buyers will
      make reasonable efforts to minimize such cost.

2.7.2 The Seller will use its reasonable efforts to deliver Initial Provisioning
      Material in Paragraph 1.1(a) of this Letter Agreement against the Buyers'
      orders from the Seller and according to the following schedule, provided
      the orders are received by the Seller in accordance with published
      leadtime.

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      Initial Provisioning Material will be delivered as provided below:

      (a)   At least fifty percent (50%) of the ordered quantity of each Line
            Replacement or Line Maintenance item three (3) months before
            delivery of the first Aircraft of each block of Aircraft for which
            the Buyers have placed Initial Provisioning orders for Material
            defined above in Paragraph 1.1(a).

      (b)   At least seventy-five percent (75%) of the ordered quantity of each
            Line Replacement or Line Maintenance item: one (1) month (for items
            identified as line station items, two (2) months) before delivery of
            the first Aircraft of each block of Aircraft for which the Buyers
            have placed Initial Provisioning orders for Material defined above
            in Paragraph 1.1(a).

      (c)   Fifty percent (50%) of the ordered quantity of each item except as
            specified in Paragraphs 2.7.1 (a) and 2.7.1 (b) above: at delivery
            of the first Aircraft of each block of Aircraft for which the Buyers
            have placed Initial Provisioning orders for Material defined above
            in Paragraph 1.1(a).

      (d)   One hundred percent (100%) of the ordered quantity of each item,
            including line station items: three (3) months after delivery of the
            first Aircraft of each block of Aircraft for which the Buyers have
            placed Initial Provisioning orders for Material, as defined above in
            Paragraph 1.1(a). If said one hundred percent (100%) cannot be
            accomplished, the Seller will endeavor to have such items available
            at its facilities for immediate supply, in case of an AOG.

      The size of each block of Aircraft referred to in the schedule above will
      be defined at the Pre-Provisioning Conference and the Material will be
      delivered in sequence.

2.7.3 [...***...]

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2.7.4 The Buyers may cancel or modify Initial Provisioning orders placed with
      the Seller with no cancellation charge as follows:

      (a)   "Long Lead-Time Material" (lead time exceeding [...***...], not
            later than [...***...] before scheduled delivery of said Material.

      (b)   Normal lead time Material, not later than [...***...] before
            scheduled delivery of said Material, provided however, that for
            Material that has a lead time of [...***...] or less, the published
            lead time for the Buyers' right to cancel or modify orders will be
            equal to the published lead time for such Material plus [...***...].

      (c)   Buyers-specific Material and Material described in Paragraphs 1.1(b)
            through 1.1(f), not later than the quoted lead time before scheduled
            delivery of said Material.

2.7.5 Should the Buyers cancel or modify any orders for Material outside the
      time limits defined above in Paragraph 2.7.4, the Seller will have no
      liability for the cancellation or modification, and the Buyers will
      reimburse the Seller for any direct cost incurred in connection therewith.

2.7.6 Except as otherwise set forth herein, all transportation costs for the
      return of Material under this Paragraph 2, including any insurance and
      customs duties applicable or other related expenditures, will be borne by
      the Buyers.

3.    STORES

3.1   ANACS Spares Center

      The Seller has established and will maintain or cause to be maintained, as
      long as at least five (5) aircraft of the type of the Aircraft are
      operated by [...***...] airlines in commercial air transport service of
      which at least one (1) is operated by the Buyers (the "US Term"), a US
      store located near Dulles International Airport, Washington, DC, known as
      the ANACS Spares Center - Washington ("ANACS Spares Center"). The ANACS
      Spares Center will be operated twenty-four (24) hours/day, seven (7)
      days/week, all year for the handling of AOG and critical orders for Seller
      Parts. [...***...]

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      [...***...]

3.2   Material Support Center, Germany

      The Manufacturer has established and will maintain or cause to be
      maintained during the Term a store of Seller Parts at MSC. MSC will be
      operated twenty-four (24) hours per day, seven (7) days per week, twelve
      months a year.

3.3   Other Points of Shipment

      The Seller reserves the right to effect deliveries from distribution
      centers other than the ANACS Spares Center or MSC and from any of the
      production facilities of the Associated Contractors.

4.    DELIVERY

4.1   General

      The Buyers' purchase orders will be administered in accordance with ATA
      Specification 2000.

      The provisions of Paragraph 4.2 of this Letter Agreement do not apply to
      Initial Provisioning Data or Material as described in Paragraph 2 of this
      Letter Agreement.

4.2   Lead Times

4.2.1 In general, the lead times are (and, unless otherwise agreed, will at all
      times be) in accordance with the definition in the "World Airline and
      Suppliers Guide" (latest edition).

4.2.2 Material will be dispatched within the lead times quoted in the published
      Seller's price catalog for Material described in Paragraph 1.1(a), and
      within the Supplier's or supplier's lead time augmented by the Seller's
      own order and delivery processing time (such in-house processing time not
      to exceed fifteen (15) days) for Material described in Paragraphs 1.1(b)
      through 1.1(d). The Seller will endeavor to improve its lead times and
      neither the Seller, the Manufacturer nor any of their Affiliates will
      discriminate against the Buyers in delivery processing time.

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4.2.3 Expedite Service

      The Seller operates a twenty-four (24) hour-a-day, seven (7) day-a-week
      expedite service to supply the relevant Seller Parts available in the
      Seller's stock, workshops and assembly line, including high-cost/long-
      lead-time items, to the international airport nearest the location of such
      items (the "Expedite Service").

      The Expedite Service is operated in accordance with the "World Airlines
      and Suppliers Guide." Accordingly, the Seller will notify the Buyer of the
      action taken to effect the Expedite Service as follows:

      (a)   four (4) hours after receipt of an AOG order,

      (b)   twenty-four (24) hours after receipt of a critical order (imminent
            AOG or work stoppage),

      (c)   five (5) days after receipt of an expedite order from the Buyers
            (nil stock at the Buyers' for no-go items).

      The Seller and its subcontractors will deliver Seller Parts requested on
      expedite basis against normal orders previously placed by the Buyers or
      upon requests by telephone or facsimile by the Buyers' representatives,
      such requests to be confirmed by the Buyers' subsequent order for such
      Seller Parts within a reasonable time.

4.3   Delivery Status

      The Seller agrees to report to the Buyers the status of supplies against
      orders on a monthly basis or on a mutually agreed timeframe.

4.4   Excusable Delay

      Clause 10.1 of the Agreement will apply to the Material support as defined
      in Paragraph 1 of this Letter Agreement.

4.5   Shortages, Overshipments, Nonconformance in Orders

4.5.1 Within thirty (30) days after receipt of Material delivered pursuant to a
      purchase order, the Buyers will advise the Seller of any alleged shortages
      or overshipments with respect to such purchase order and of all claimed
      nonconformance to specification of parts in such order.

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      In the event that the Buyers have not reported such alleged shortages,
      overshipments or nonconformance within such period, the Buyers will be
      deemed to have accepted the deliveries unless, in the case of shortages,
      the Buyers can prove within a reasonable period of time that it did not
      receive the Material.

4.5.2 In the event that the Buyers report over-shipments or nonconformance to
      the specifications within the period specified in Paragraph 4.5.1, the
      Seller will, if such report is accepted, either replace the Material
      concerned or credit the Buyers for Material paid for but returned to the
      Seller. In such case, transportation charges will be borne by the Seller.

      The Buyers will endeavor to minimize such costs.

4.6   [...***...]

4.7   [...***...]

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4.8   Cessation of Deliveries

      The Seller reserves the right to stop or otherwise suspend deliveries if
      the Buyers fail to meet its obligations under Paragraph 6.

5.    PRICE

5.1   The Material prices will be:

5.1.1 [...***...]

5.1.2 [...***...]

5.2   Validity of Prices

5.2.1 The Material prices are the Seller's published prices in effect on the
      date of receipt of the purchase order (subject to reasonable quantities
      and delivery time) and will be expressed in US dollars. Payment will be
      made by the Buyers to the Seller in US dollars as set forth below in
      Paragraph 6.1.

5.2.2 Prices of Seller Parts will be in accordance with the then current ANAC's
      Spare Parts Price List. Prices will be firm for each calendar year, except
      that the Seller reserves the right to revise the prices of Seller Parts
      during the course of the calendar year in the following cases:

      -     significant revision in manufacturing costs,

      -     significant revision in Manufacturer's purchase price of materials
            (including significant variation of exchange rates),

      -     significant error in estimation of expression of any price.

      [...***...]

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5.2.3 [...***...]

5.2.4 The Seller warrants that, should the Buyers purchase from the Seller one
      hundred percent (100%) of the recommended Initial Provisioning of Material
      identified in Paragraphs 1.1(b) through 1.1(d), above, the average
      handling charge on the total package will not exceed fifteen percent
      (15%). This average handling charge will be increased to eighteen percent
      (18%) on any orders placed less than six (6) months prior to delivery of
      the first Aircraft.

6.    PAYMENT PROCEDURES AND CONDITIONS

6.1   Currency

      Payment will be made in US dollars.

6.2   Time and Means of Payment

      Payment will be made by transfer of immediately available funds from the
      Buyers to the Seller within thirty (30) days from the date of invoice.
      [...***...]

6.3   Bank Accounts

      The Buyers will make all payments hereunder in full without setoff,
      counterclaim, deduction or withholding of any kind to the accounts listed
      below, unless otherwise directed by the Seller:

      (a)   For wire transfer, in favor of Airbus North America Customer
            Services, Inc.:

            [...***...]
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      (b)   For direct deposit (lockbox), in favor of Airbus North America
            Customer Services, Inc.:

            Airbus North America Customer Services, Inc.:
            PO Box 8500
            Lock Box No. 4555
            Philadelphia, PA 19178-4555

6.4   Taxes

      All payments due the Seller hereunder will be made in full without setoff
      or counterclaim and without deduction or withholding of any kind.
      Consequently, the Buyers will assure that the sums received by the Seller
      under this Letter Agreement are equal to the full amounts expressed to be
      due the Seller hereunder, without deduction or withholding on account of
      and free from any and all taxes, levies, imposts, dues or charges of
      whatever nature except that if the Buyers are compelled by law to make any
      such deduction or withholding the Buyers will pay such additional amounts
      as may be necessary in order that the net amount received by the Seller
      after such deduction or withholding will equal the amounts that would have
      been received in the absence of such deduction or withholding.

6.5   If any payment due the Seller is not received in accordance with the time
      period provided in Paragraph 6.2, the Seller will have the right to claim
      from the Buyers and the Buyers will promptly pay to the Seller interest on
      the unpaid amount at an annual rate equal to [...***...] per month to be
      calculated from (and including) the due date to (but excluding) the date
      payment is received by the Seller, on the basis of a 360-day year and
      actual number of days elapsed. The Seller's claim to such interest will
      not prejudice any other rights the Seller may have under this Letter
      Agreement or applicable law.

7.    TITLE

      Title to any Material purchased under this Letter Agreement will remain
      with the Seller until full payment of the invoices therefore and any
      interest thereon has been received by the Seller.

      The Buyers will undertake that Material to which title has not passed to
      the Buyers will be kept free from any lien, security interest mortgage or
      other charge or claim in favor of any third party.

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8.    PACKAGING

      All material will be packaged in accordance with ATA 300 specification,
      Category III for consumable/expendable Material and Category II for
      rotables. Category I containers will be used if requested by the Buyers
      and the difference between Category I and Category II packaging costs will
      be paid by the Buyers together with payment for the respective Material.

9.    DATA RETRIEVAL

      The Buyers undertake to provide periodically to the Seller, as the Seller
      may reasonably request, during the Term, a quantitative list of the parts
      used for maintenance and overhaul of the Aircraft. The range and contents
      of this list will be established by mutual agreement between the Seller
      and the Buyers.

10.   BUY-BACK

10.1  Buy-Back of Obsolete Material

      The Seller agrees to buy back unused Seller Parts that may become obsolete
      for the Buyers' fleet [...***...] as a result of mandatory modifications
      required by the Buyers' or Seller's Aviation Authorities, subject to the
      following:

      (a)   the Seller Parts involved will be those which the Seller directs the
            Buyers to scrap or dispose of and which cannot be reworked or
            repaired to satisfy the revised standard;

      (b)   the Seller will grant the Buyers a credit equal to the purchase
            price paid by the Buyers for any such obsolete parts, such credit
            will not exceed the value of the provisioning quantities recommended
            by the Seller in the Initial Provisioning recommendation as mutually
            agreed upon at the Initial Provisioning Conference;

      (c)   the Seller will use its reasonable efforts to obtain for the Buyers
            the same protection from Suppliers and will promptly assist the
            Buyers if so requested by the Buyers.

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10.2   Buy-Back of Surplus Material

10.2.1 The Seller agrees that at any time after one (1) year and within three
       (3) years after delivery of the first Aircraft to the Buyers, Buyers
       will have the right to return to the Seller, [...***...], unused
       and undamaged Material described in Paragraphs 1.1(a) and 1.1(b)
       originally purchased from the Seller under the terms hereof, provided (i)
       that the selected protection level does not exceed ninety-six percent
       (96%) with a turnaround time of forty-five (45) days, (ii) that said
       Material does not exceed the provisioning quantities recommended by the
       Seller in the Initial Provisioning recommendations, does not have a
       limited shelf life nor contain any shelf-life limited components with
       less than [...***...] of their shelf life remaining when
       returned to the Seller, and (iii) that the Material is returned with the
       Seller's original documentation and any such documentation (including
       tags, certificates) required to identify, substantiate the condition of
       and enable the resale of such Material.

10.2.2 The Seller's agreement in writing is necessary before any Material in
       excess of the Seller's recommendation may be considered for buy-back.

10.2.3 It is expressly understood and agreed that the rights granted to the
       Buyers under this Paragraph 10.2 will not apply to Material that may
       become obsolete at any time or for any reason other than as set forth in
       Paragraph 10.1.

10.2.4 [...***...]

10.3   Except as otherwise set forth herein, all transportation costs for the
       return of surplus Material under this Paragraph 10, including any
       applicable insurance and customs duties or other related expenditures,
       will be borne by the Seller.

10.4   The Seller's obligation to repurchase surplus and obsolete Material
       depends upon the Buyers' demonstration, by the Buyers' compliance with
       the requirements set forth in Paragraph 9 of this Letter Agreement, that
       such Material exceeds the Initial Provisioning requirements.

11.1   WARRANTIES ON SELLER PARTS

       The Seller represents and warrants that the Manufacturer has provided to
       the Seller the following Warranty, Supplier Warranties and Interface
       Commitment with respect to Seller Parts, that are reproduced below
       between the words QUOTE and

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       UNQUOTE and are subject to the terms, conditions, limitations and
       restrictions (including, but not limited to, the Exclusivity of
       Warranties and General Limitations of Liability and Duplicate Remedies
       provisions) set forth below. The Seller hereby assigns to the Buyers, and
       the Buyers hereby accept, all of the Seller's rights and obligations as
       "Buyers" under the said Warranty, Supplier Warranties and Interface
       Commitment, and the Seller subrogates the Buyers to all such rights and
       obligations in respect of the Seller Parts. The Seller hereby warrants to
       the Buyers that (i) it has all requisite authority to make the foregoing
       assignment to and to effect the foregoing subrogation in favor of the
       Buyers, (ii) such assignment and subrogation are effective to confer on
       the Buyers all of the foregoing rights and obligations of the Seller,
       (iii) the provisions so assigned are in full force and effect and have
       not been amended prior to the date hereof, and (iv) the Seller will not
       enter into any amendment of the provisions so assigned without the prior
       written consent of the Buyers.

QUOTE

11.1   WARRANTY

11.1.1 Nature of Warranty

       Subject to the limitations and conditions hereinafter provided, and
       except as provided in Paragraph 11.1.2, the Seller warrants to the Buyers
       that each Seller Part will at the time of Delivery to the Buyer be free
       from defects:

       (i)    in material,

       (ii)   in workmanship, including, without limitation, processes of
              manufacture,

       (iii)  in design (including, without limitation, selection of materials)
              having regard to the state of the art at the date of such design,
              and

       (iv)   arising from failure to conform to the Specification, except as to
              those portions of the Specification that are expressly stated in
              the Specification to be estimates or approximations or design
              aims.

11.1.2 [...***...]

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11.1.3 Exceptions

       The warranties set forth in Paragraph 11.1.1 will not apply to Buyer
       Furnished Equipment, Propulsion Systems, or to any component, accessory,
       equipment or part purchased by the Buyers that is not a Seller Part,
       provided, however, that any defect inherent in the Seller's design of the
       installation, considering the state of the art at the date of such
       design, that impairs the use of such items will constitute a defect in
       design for the purposes of this Paragraph 11.1 and be covered by the
       warranty set forth in Paragraph 11.1.1(iii).

11.1.4 Warranty Period

       The warranties described in Paragraphs 11.1.1 will be limited to those
       defects that become apparent within [...***...] after delivery of the
       Seller Part (the "SELLER PART WARRANTY PERIOD").

11.1.5 Buyer's Remedy and Seller's Obligation

       The Buyers' remedy and the Seller's obligation and liability under
       Paragraph 11.1 are limited to, at the Seller's expense, the repair,
       replacement or correction of, or the supply of modification kits
       rectifying the defect to any defective Warranted Part, [...***...].

       [...***...]

       The provisions of Subclauses 12.1.6, 12.1.7, 12.1.8 and 12.1.9 of the
       Agreement will, as applicable, also apply to this Paragraph 11.

11.2   EXCLUSIVITY OF WARRANTIES

       THIS PARAGRAPH 11 (INCLUDING ITS SUBPARTS) SETS FORTH THE EXCLUSIVE
       WARRANTIES, EXCLUSIVE LIABILITIES AND EXCLUSIVE OBLIGATIONS OF THE
       SELLER, AND THE EXCLUSIVE REMEDIES AVAILABLE TO THE BUYERS, WHETHER UNDER
       THIS LETTER AGREEMENT OR OTHERWISE, ARISING FROM ANY DEFECT OR
       NONCONFORMITY OR PROBLEM OF ANY KIND IN ANY SELLER PART DELIVERED BY THE
       SELLER UNDER THIS AGREEMENT.

       THE BUYERS RECOGNIZE THAT THE RIGHTS, WARRANTIES AND

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       REMEDIES IN THIS PARAGRAPH 11 ARE ADEQUATE AND SUFFICIENT TO PROTECT THE
       BUYER FROM ANY DEFECT OR NONCONFORMITY OR PROBLEM OF ANY KIND IN THE
       SELLER PARTS SUPPLIED UNDER THIS LETTER AGREEMENT. THE BUYERS HEREBY
       WAIVE, RELEASE AND RENOUNCE ALL OTHER WARRANTIES, OBLIGATIONS, GUARANTEES
       AND LIABILITIES OF THE SELLER AND ALL OTHER RIGHTS, CLAIMS AND REMEDIES
       OF THE BUYERS AGAINST THE SELLER, WHETHER EXPRESS OR IMPLIED BY CONTRACT,
       TORT, OR STATUTORY LAW OR OTHERWISE, WITH RESPECT TO ANY NONCONFORMITY OR
       DEFECT OR PROBLEM OF ANY KIND IN ANY SELLER PART DELIVERED BY THE SELLER
       UNDER THIS LETTER AGREEMENT, INCLUDING BUT NOT LIMITED TO:

       (1)    ANY IMPLIED WARRANTY OF MERCHANTABILITY AND/OR FITNESS FOR ANY
              GENERAL OR PARTICULAR PURPOSE;

       (2)    ANY IMPLIED OR EXPRESS WARRANTY ARISING FROM COURSE OF
              PERFORMANCE, COURSE OF DEALING OR USAGE OF TRADE;

       (3)    ANY RIGHT, CLAIM OR REMEDY FOR BREACH OF CONTRACT;

       (4)    ANY RIGHT, CLAIM OR REMEDY FOR TORT, UNDER ANY THEORY OF
              LIABILITY, HOWEVER ALLEGED, INCLUDING, BUT NOT LIMITED TO, ACTIONS
              AND/OR CLAIMS FOR NEGLIGENCE, GROSS NEGLIGENCE, INTENTIONAL ACTS,
              WILLFUL DISREGARD, IMPLIED WARRANTY, PRODUCT LIABILITY, STRICT
              LIABILITY OR FAILURE TO WARN;

       (5)    ANY RIGHT, CLAIM OR REMEDY ARISING UNDER THE UNIFORM COMMERCIAL
              CODE OR ANY OTHER STATE OR FEDERAL STATUTE;

       (6)    ANY RIGHT, CLAIM OR REMEDY ARISING UNDER ANY REGULATIONS OR
              STANDARDS IMPOSED BY ANY INTERNATIONAL, NATIONAL, STATE OR LOCAL
              STATUTE OR AGENCY;

       (7)    ANY RIGHT, CLAIM OR REMEDY TO RECOVER OR BE COMPENSATED FOR:

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              (a)    LOSS OF USE OR REPLACEMENT OF ANY AIRCRAFT, OR PART
                     PROVIDED UNDER THE AGREEMENT DUE TO A DEFECT, NONCONFORMITY
                     OR OTHER PROBLEM IN ANY SELLER PART;

              (b)    LOSS OF, OR DAMAGE OF ANY KIND TO, ANY AIRCRAFT, COMPONENT,
                     EQUIPMENT, ACCESSORY OR PART DUE TO A DEFECT, NONCONFORMITY
                     OR OTHER PROBLEM IN ANY SELLER PART;

              (c)    LOSS OF PROFITS AND/OR REVENUES;

              (d)    ANY OTHER INCIDENTAL OR CONSEQUENTIAL DAMAGE.

       THE WARRANTIES PROVIDED BY THIS LETTER AGREEMENT WILL NOT BE EXTENDED,
       ALTERED OR VARIED EXCEPT BY A WRITTEN INSTRUMENT SIGNED BY THE SELLER AND
       THE BUYERS. IN THE EVENT THAT ANY PROVISION OF THIS PARAGRAPH 11 SHOULD
       FOR ANY REASON BE HELD UNLAWFUL, OR OTHERWISE UNENFORCEABLE, THE
       REMAINDER OF THIS PARAGRAPH 11 WILL REMAIN IN FULL FORCE AND EFFECT.

       FOR THE PURPOSE OF THIS PARAGRAPH 11.2, "SELLER" WILL BE UNDERSTOOD TO
       INCLUDE THE SELLER, ITS AFFILIATES, SUPPLIERS AND ASSOCIATED CONTRACTORS.

       [...***...]

11.3   DUPLICATE REMEDIES

       The remedies provided to the Buyers under Paragraph 11 as to any part
       thereof are mutually exclusive and not cumulative. The Buyers will be
       entitled to the remedy that provides the maximum benefit to it, as the
       Buyer may elect, pursuant to the terms and conditions of this Paragraph
       11 for any such particular defect for which remedies are provided under
       this Paragraph 11, provided, however, that the Buyers will not be

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       entitled to elect a remedy under more than one part of this Paragraph 11
       for the same defect. [...***...]

    UNQUOTE

       In consideration of the foregoing assignment and subrogation by the
       Seller in favor of the Buyers in respect of the Seller's rights against
       and obligations to the Manufacturer under the provisions quoted above,
       the Buyers hereby accepts such assignment and subrogation and agrees to
       be bound by all of the terms, conditions and limitations therein
       contained.

11.4   NEGOTIATED AGREEMENT

       The Buyers and Seller agree that this Paragraph 11 has been the subject
       of discussion and negotiation and is fully understood by the parties, and
       that the price of the Aircraft and the other mutual agreements of the
       parties set forth in the Agreement were arrived at in consideration of,
       inter alia, the Exclusivity of Warranties and General Limitations of
       Liability provisions and Duplicate Remedies provisions set forth in this
       Paragraph 11.

12.    LEASING OF SPARE PARTS

12.1   Applicable Terms

       The terms and conditions of this Paragraph 12 will apply to the Lease of
       Seller Parts listed in Appendix "A" to this Paragraph 12 ("Leased Parts")
       and will form a part of each lease of any Leased Part by the Buyers from
       the Seller after the date hereof. Except for the description of the
       Leased Part, the Lease Term, the Leased Part delivery and return
       locations and the Lease Charges (defined below in Paragraph 12.4), all
       other terms and conditions appearing on any order form or other document
       pertaining to Leased Parts will be deemed inapplicable, and in lieu
       thereof the terms and conditions of this Paragraph 12 will prevail. For
       purposes of this Paragraph 12, the term "Lessor" refers to the Seller and
       the term "Lessees" refers to the Buyers. Parts not included in Appendix
       "A" to this Paragraph 12 may be supplied under a separate lease agreement
       between the Seller and the Buyers.

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12.2   Lease Procedure: Spare Parts Leased

       At the Lessees' request by telephone (to be confirmed promptly in
       writing), facsimile, letter or other written instrument, the Lessor will
       lease Leased Parts, which will be made available in accordance with
       Paragraph 4.2.3, to the Lessees as substitutes for parts withdrawn from
       an Aircraft for repair or overhaul. Each lease of Leased Parts will be
       evidenced by a lease document ("Lease") issued by the Lessor to the
       Lessees no later than seven (7) business days after delivery of the
       Leased Part.

12.3   Lease Term: Return

       The term of the lease ("Lease Term") will commence on the date of
       dispatch of the Leased Part to the Lessees or its agent at the Lessor's
       facility and will end on the date of receipt at the Lessor's facility of
       the Leased Part or in a serviceable condition. The Lease Term will not
       exceed thirty (30) days after such date of dispatch, unless extended by
       written agreement between Lessor and Lessees within such thirty (30)-day
       period (such extension not to exceed an additional thirty (30) days).
       Notwithstanding the foregoing, the Lease Term will end in the event, and
       upon the date, of exercise of the Lessees' option to either purchase or
       exchange the Leased Part, as provided herein.

12.4   Lease Charges and Taxes

       The Lessees will pay the Lessor (a) a daily rental charge for the Lease
       Term in respect of each Leased Part equal to
       one-three-hundred-sixty-fifth (1/365) of the Catalog Price of such Leased
       Part, as set forth in the Seller's Spare Parts Price List in effect on
       the date of commencement of the Lease Term, (b) any reasonable additional
       costs which may be incurred by the Lessor as a direct result of such
       Lease, such as inspection, test, repair, overhaul and repackaging costs
       as required to place the Leased Part in satisfactory condition for lease
       to a subsequent customer, (c) all transportation and insurance charges
       and (d) any taxes, charges or customs duties imposed upon the Lessor or
       its property as a result of the lease, sale, delivery, storage or
       transfer of any Leased Part (the "Lease Charges"). All payments due
       hereunder will be made in accordance with Paragraph 6.

       In the event that the Leased Part has not been returned to the Lessor's
       designated facilities by the last day of the Lease Term, the Lessor will
       be entitled, in addition to any other remedy it may have at law or under
       this Paragraph 12, to charge to the Lessees, and the Lessees will pay,
       all of the charges referred to in this Paragraph 12.4 accruing for each
       day after the end of the Lease Term and for as long as such Leased Part
       is not returned to the Lessor and as though the Lease Term were extended
       to the

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       period of such delay.

       Should the Lessees fail to return the Leased Part of the Lessor at the
       end of the lease Term, such failure will be deemed to be an election by
       the Lessees to purchase the Leased Part and the Lessees will pay the
       price set forth in Paragraph 12.8.

12.5   Title

       Title to each Leased Part will remain with the Lessor at all times unless
       the Lessees exercises its option to purchase it in accordance with
       Paragraph 12.8 of this Letter Agreement, in which case title will pass to
       the Lessees in accordance with Paragraph 7 of this Letter Agreement.

12.6   Risk of Loss

       Except for normal wear and tear, each Leased Part will be returned to the
       Lessor in the same condition as when delivered to the Lessees. However,
       the Lessees will not without the Lessors' prior written consent repair,
       modify or alter any Leased Part. Risk of loss or damage to each Leased
       Part will remain with the Lessees until such Leased Part is redelivered
       to the Lessor at the return location specified in the applicable Lease.
       If a Leased Part is lost or damaged beyond repair, the Lessees will be
       deemed to have exercised its option to purchase the part in accordance
       with Paragraph 12.8, as of the date of such loss or damage.

12.7   Record of Flight Hours

       All flight hours accumulated by the Lessees on each Leased Part during
       the Lease Term will be documented by the Lessees. Records will be
       delivered to the Lessor upon return of such Leased Part to the Lessor
       include all documentation pertinent to inspection, maintenance and/or
       rework of the Leased Part and evidence of incidents such as hard landings
       of aircraft on which such Leased Part was installed from time to time
       during the Lease term, abnormalities of operation and corrective action
       taken by the Lessees as a result of such incidents.

12.8   Option to Purchase

12.8.1 Option to Purchase

       The Lessees may at its option, exercisable by written notice given to the
       Lessor, elect during or at the end of the Lease Term to purchase each
       Leased Part, in which case the then current purchase price for such
       Leased Part as set forth in the Seller's Spare

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       Parts Price List will be paid by the Lessees to the Lessor. The
       immediately preceding sentence will apply to new Leased Parts only. In
       the event the Leased Part is used, [...***...] of the then current
       purchase price for such Leased Part will be paid by the Lessees to the
       Lessor. Such option will be contingent upon the Lessees' providing the
       Lessor with evidence satisfactory to the Lessor that the original part
       fitted to the Aircraft is beyond economical repair. [...***...]

12.8.2 In the event of purchase, the Leased Part will be warranted in accordance
       with Paragraph 11 as though such Leased Part were a Seller Part;
       provided, however, that (i) the Seller will prorate the full Seller Part
       Warranty Period granted to the Buyer according to the actual usage of
       such Leased Part and (ii) in no event will such Seller Part Warranty
       Period be less than six (6) months from the date of purchase of such
       Leased Part. A warranty granted under this Paragraph 12.8.2 will be in
       substitution for the warranty granted under Paragraph 12.9 at the
       commencement of the Lease Term.

12.9   Warranties on Leased Parts

       The Lessor, in its capacity as "Lessees," under its arrangements with the
       Manufacturer, in its capacity as "Lessor," has negotiated and obtained
       the following warranties from the Manufacturer with respect to the Leased
       Parts, subject to the terms, conditions, limitations and restrictions all
       as hereinafter set out. The Lessor hereby assigns to the Lessees, and the
       Lessee hereby accepts, all of the rights and obligations of the Lessor in
       its capacity as "Lessees" as aforesaid under the said warranties and the
       Lessor subrogates the Lessee as to all such rights and obligations in
       respect of Leased Parts during the Lease Term with respect thereto. The
       Lessor hereby warrants to the Lessees that it has all requisite authority
       to make the foregoing assignment and effect the foregoing subrogation to
       and in favor of the Lessees and that it will not enter into any amendment
       of the provisions so assigned or subrogated without the prior written
       consent of the Lessees. Capitalized terms utilized in the following
       provisions have the meanings assigned thereto in this Letter Agreement,
       except that the term "Lessor" refers to the Manufacturer and the term
       "Lessees" refers to the Lessor.

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QUOTE

12.9.1 The Lessor warrants that each Leased Part will at the time of delivery
       thereof:

       (a)    conform to the applicable specification for such part,

       (b)    be free from defects in material,

       (c)    be free from defects in workmanship, including without limitation
              processes of manufacture, and

       (d)    be free from defects in design (including, without limitation,
              selection of materials) having regard to the state of the art at
              the date of such design.

12.9.2 Survival of Warranties

       With respect to each Leased Part, the warranty set forth above in
       Paragraph 12.9.1(a) will not survive delivery, and the warranties set
       forth above in Paragraphs 12.9.1(b), 12.9.1(c) and 12.9.1 (d) will
       survive delivery only upon the conditions and subject to the limitations
       set forth below in Paragraphs 12.9.3 through 12.9.8.

12.9.3 Warranty and Notice Periods

       The Lessees' remedy and the Lessor's obligation and liability under this
       Paragraph 12.9, with respect to each defect, are conditioned upon (i) the
       defect having become apparent to the Lessees within the Lease Term and
       (ii) the Lessor's warranty administrator having received written notice
       of the defect from the Lessees within [...***...] after the defect
       became apparent to the Lessees.

12.9.4 Return and Proof

       The Lessees' remedy and the Lessor's obligation and liability under this
       Paragraph 12.9, with respect to each defect, are also conditioned upon:

       (a)    the return by the Lessees as soon as practicable to the return
              location specified in the applicable Lease, or such other place as
              may be mutually agreeable, of the Leased Part claimed to be
              defective, and

       (b)    the submission by the Lessees to the Lessor's warranty
              administrator of reasonable proof that the claimed defect is due
              to a matter embraced within

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              the Lessor's warranty under this Paragraph 12.9 and that such
              defect did not result from any act or omission of the Lessees,
              including but not limited to any failure to operate or maintain
              the Leased Part claimed to be defective or the Aircraft in which
              it was installed in accordance with applicable governmental
              regulations and the Lessor's applicable written instructions.

12.9.5   Limitation of Warranty

         The Lessees' remedy and the Lessor's obligation and liability under
         this Paragraph 12.9 with respect to each defect are limited to the
         repair of such defect in the Leased Part in which the defect appears,
         or, as mutually agreed, to the replacement of such Leased Part with a
         similar part free from defect.

         Any replacement part furnished under this Paragraph 12.9.5 will for the
         purposes of this Letter Agreement be deemed to be the Leased Part so
         replaced.

12.9.6   Suspension and Transportation Costs

12.9.6.1 If a Leased Part is found to be defective and is covered by this
         warranty, the Lease Term and the Lessees' obligation to pay rental
         charges as provided in Paragraph 12.4(a) of this Letter Agreement will
         be suspended from the date on which the Lessees notify the Lessor of
         such defect until the date on which the Lessor has repaired, corrected
         or replaced the defective Leased Part, provided, however, that the
         Lessees have withdrawn such defective Leased Part from use, promptly
         after giving such notice to the Lessor. If the defective Leased Part is
         replaced, such replacement will be deemed to no longer be a Leased Part
         under the Lease as of the date on which such part was received by the
         Lessor at the return location specified in the applicable Lease.

         If a Leased Part is found to be defective on first use by the Lessees
         and is covered by this warranty, rental charges as provided in
         Paragraph 12.4(a) will not accrue and will not be payable by the
         Lessees until the date on which the Lessor has repaired, corrected or
         replaced the defective Leased Part.

12.9.6.2 All transportation and insurance costs associated with the return of
         the defective Leased Part to the Lessor and the return of the repaired,
         corrected or replacement part to the Lessees will be borne by the
         Lessor.

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12.9.7   Wear and Tear

         Normal wear and tear and the need for regular maintenance and overhaul
         will not constitute a defect or nonconformance under this Paragraph
         12.9.

12.9.8.  EXCLUSIVITY OF WARRANTIES

         THIS PARAGRAPH 12.9.8 (INCLUDING ITS SUBPARTS) SETS FORTH THE EXCLUSIVE
         WARRANTIES, EXCLUSIVE LIABILITIES AND EXCLUSIVE OBLIGATIONS OF THE
         SELLERS, AND THE EXCLUSIVE REMEDIES AVAILABLE TO THE BUYER, WHETHER
         UNDER THIS LETTER AGREEMENT OR OTHERWISE, ARISING FROM ANY DEFECT OR
         NONCONFORMITY OR PROBLEM OF ANY KIND IN ANY LEASED PART.

         THE BUYERS RECOGNIZE THAT THE RIGHTS, WARRANTIES AND REMEDIES IN THIS
         PARAGRAPH 12.9.8 ARE ADEQUATE AND SUFFICIENT TO PROTECT THE BUYERS FROM
         ANY DEFECT OR NONCONFORMITY OR PROBLEM OF ANY KIND IN THE LEASED PARTS.
         THE BUYERS HEREBY WAIVE, RELEASE AND RENOUNCE ALL OTHER WARRANTIES,
         OBLIGATIONS, GUARANTEES AND LIABILITIES OF THE SELLER AND ALL OTHER
         RIGHTS, CLAIMS AND REMEDIES OF THE BUYERS AGAINST THE SELLER, WHETHER
         EXPRESS OR IMPLIED BY CONTRACT, TORT, OR STATUTORY LAW OR OTHERWISE,
         WITH RESPECT TO ANY NONCONFORMITY OR DEFECT OR PROBLEM OF ANY KIND IN
         ANY LEASED PART, INCLUDING BUT NOT LIMITED TO:

         (1)      ANY IMPLIED WARRANTY OF MERCHANTABILITY AND/OR FITNESS FOR ANY
                  GENERAL OR PARTICULAR PURPOSE;

         (2)      ANY IMPLIED OR EXPRESS WARRANTY ARISING FROM COURSE OF
                  PERFORMANCE, COURSE OF DEALING OR USAGE OF TRADE;

         (3)      ANY RIGHT, CLAIM OR REMEDY FOR BREACH OF CONTRACT;

         (4)      ANY RIGHT, CLAIM OR REMEDY FOR TORT, UNDER ANY THEORY OF
                  LIABILITY, HOWEVER ALLEGED, INCLUDING, BUT NOT LIMITED TO,
                  ACTIONS AND/OR CLAIMS FOR NEGLIGENCE, GROSS NEGLIGENCE,
                  INTENTIONAL ACTS, WILLFUL DISREGARD, IMPLIED WARRANTY, PRODUCT
                  LIABILITY, STRICT LIABILITY OR FAILURE TO WARN;

         (5)      ANY RIGHT, CLAIM OR REMEDY ARISING UNDER THE UNIFORM

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                  COMMERCIAL CODE OR ANY OTHER STATE OR FEDERAL STATUTE;

         (6)      ANY RIGHT, CLAIM OR REMEDY ARISING UNDER ANY REGULATIONS OR
                  STANDARDS IMPOSED BY ANY INTERNATIONAL, NATIONAL, STATE OR
                  LOCAL STATUTE OR AGENCY;

         (7)      ANY RIGHT, CLAIM OR REMEDY TO RECOVER OR BE COMPENSATED FOR:

                  (a)      LOSS OF USE OR REPLACEMENT OF ANY AIRCRAFT, OR
                           LEASED;

                  (b)      LOSS OF, OR DAMAGE OF ANY KIND TO, ANY AIRCRAFT OR
                           LEASED PART;

                  (c)      LOSS OF PROFITS AND/OR REVENUES;

                  (d)      ANY OTHER INCIDENTAL OR CONSEQUENTIAL DAMAGE.

         THE WARRANTIES PROVIDED BY THIS LETTER AGREEMENT WILL NOT BE EXTENDED,
         ALTERED OR VARIED EXCEPT BY A WRITTEN INSTRUMENT SIGNED BY THE SELLER
         AND THE BUYERS. IN THE EVENT THAT ANY PROVISION OF THIS PARAGRAPH
         12.9.8 SHOULD FOR ANY REASON BE HELD UNLAWFUL, OR OTHERWISE
         UNENFORCEABLE, THE REMAINDER OF THIS PARAGRAPH 12.9.8 WILL REMAIN IN
         FULL FORCE AND EFFECT.

         FOR THE PURPOSE OF THIS PARAGRAPH 12.9.8, "SELLER" WILL BE UNDERSTOOD
         TO INCLUDE THE SELLER, ITS AFFILIATES, SUPPLIERS AND ASSOCIATED
         CONTRACTORS.

         [...***...]

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12.9.9 DUPLICATE REMEDIES

       The remedies provided to the Buyers under Paragraph 12 as to any part
       thereof are mutually exclusive and not cumulative. The Buyers will be
       entitled to the remedy that provides the maximum benefit to it, as the
       Buyers may elect, pursuant to the terms and conditions of this Paragraph
       12 for any such particular defect for which remedies are provided under
       this Paragraph 12, provided, however, that the Buyers will not be
       entitled to elect a remedy under more than one part of this Paragraph 12
       for the same defect. [...***...]

     UNQUOTE

       In consideration of the assignment and subrogation by the Seller under
       this Paragraph 12 in favor of the Buyers in respect of the Seller's
       rights against and obligations to the Manufacturer under the provisions
       quoted above, the Buyers hereby accepts such assignment and subrogation
       and agrees to be bound by all of the terms, conditions and limitations
       therein contained.

12.10. NEGOTIATED AGREEMENT

       The Buyers and Seller agree that this Paragraph 12 has been the subject
       of discussion and negotiation and is fully understood by the parties, and
       that the price of the Aircraft and the other mutual agreements of the
       parties set forth in the Agreement were arrived at in consideration of,
       inter alia, the Exclusivity of Warranties and General Limitations of
       Liability provisions and Duplicate Remedies provisions set forth in
       Paragraph 12.

13.    [...***...]

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14.    TERMINATION

       Any termination under Paragraph 10, 11 or 21 of the Agreement or under
       the Letter Agreements thereto will discharge all obligations and
       liabilities of the parties hereunder with respect to undelivered
       Material, services, data or other items to be purchased hereunder that
       are applicable to those Aircraft as to which the Agreement has been
       terminated, provided that the Seller will nevertheless repurchase new and
       unused Material in excess of the Buyers' requirements due to an Aircraft
       cancellation pursuant to Paragraph 10 or 11 of the Agreement, as provided
       in Paragraph 10.2. In the case of any termination of this Letter
       Agreement in connection with a termination under Clause 21 of the
       Agreement, the Seller will not have any obligation to repurchase Material
       delivered in respect of any undelivered Aircraft and the Seller's rights
       to payment for services or spare parts actually delivered to the Buyers
       or, in the case of spare parts, the return thereof in new and unused
       condition, in their original packaging with all applicable documentation
       will not be limited by the liquidated damages provision included in
       Clause 21 of the Agreement.

15.    MISCELLANEOUS

      [...***...]

16.    ASSIGNMENT

       This Letter Agreement may be assigned in accordance with Clause 20 of the
       Agreement. This Letter Agreement is otherwise not assignable.

17.    COUNTERPARTS

       This Letter Agreement may be signed in any number of separate
       counterparts. Each counterpart, when signed and delivered (including
       counterparts delivered by facsimile transmission), will be an original,
       and the counterparts will together constitute one same instrument.

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IN WITNESS WHEREOF, these presents were entered into as of the day and year
first above written.

                                Very truly yours,

                                AVSA, S.A.R.L.

                                By: __________________________

                                Its: _________________________

Accepted and Agreed

US AIRWAYS GROUP, INC.

By: _________________________
Its:

AMERICA WEST AIRLINES, INC.

By: _________________________
Its:

US AIRWAYS, INC.

By: _________________________
Its:

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APPENDIX "A" TO PARAGRAPH 12

SELLER PARTS LEASING LIST

(Leased Parts)

AILERONS

AUXILIARY POWER UNIT (APU) DOORS

CARGO DOORS

PASSENGER DOORS

ELEVATORS

FLAPS

LANDING GEAR DOORS

RUDDER

TAIL CONE

WING SLATS

SPOILERS

AIRBRAKES

WING TIPS

[...***...]

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            ***CERTAIN CONFIDENTIAL INFORMATION HAS BEEN OMITTED AND
                FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
                    COMMISSION PURSUANT TO RULE 24b-2 OF THE
                   SECURITIES EXCHANGE ACT OF 1934, AS AMENDED

                             LETTER AGREEMENT NO. 2

                                                        As of September 27, 2005

US Airways Group, Inc.
US Airways, Inc.
America West Airlines, Inc.
4000 East Sky Harbor Boulevard
Phoenix, AZ  85034

Re:  OTHER MATTERS

Ladies and Gentlemen,

US Airways, Inc., America West Airlines, Inc. and US Airways Group, Inc. (the
"Buyers"), and AVSA, S.A.R.L. (the "Seller"), have entered into an Airbus A350
Purchase Agreement dated as of even date herewith (the "Agreement"), which
covers, among other things, the sale by the Seller and the purchase by the
Buyers of certain Aircraft, under the terms and conditions set forth in said
Agreement. The Buyers and the Seller have agreed to set forth in this Letter
Agreement No. 2 (the "Letter Agreement") certain additional terms and conditions
regarding the sale of the Aircraft. Capitalized terms used herein and not
otherwise defined in this Letter Agreement will have the meanings assigned
thereto in the Agreement. Technical and trade terms used but not defined herein
or in the Agreement will be defined as generally accepted in the airline and/or
aircraft manufacturing industries. The terms "herein," "hereof" and "hereunder"
and words of similar import refer to this Letter Agreement.

All of the parties agree that this Letter Agreement will constitute an integral,
nonseverable part of said Agreement, that the provisions of said Agreement are
hereby incorporated herein by reference, and that this Letter Agreement will be
governed by the provisions of said Agreement, except that if the Agreement and
this Letter Agreement have specific provisions which are inconsistent, the
specific provisions contained in this Letter Agreement will govern.

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1.   [...***...]

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2.    [...***...]

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3.    ASSIGNMENT

      Except as set forth in Clause 20.2 of the Agreement, this Letter Agreement
      and the rights and obligations of the Buyer hereunder will not be assigned
      or transferred in any manner without the prior written consent of the
      Seller, and any attempted assignment or transfer in contravention of the
      provisions of this Paragraph 3 will be void and of no force or effect.

4.    COUNTERPARTS

      This Letter Agreement may be signed in any number of separate
      counterparts. Each counterpart, when signed and delivered (including
      counterparts delivered by facsimile transmission), will be an original,
      and the counterparts will together constitute one same instrument.

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      IN WITNESS WHEREOF, these presents were entered into as of the day and
      year first above written.

                                                     Very truly yours,

                                                     AVSA, S.A.R.L.

                                                     By:  ______________________

                                                     Its:

      Accepted and Agreed

      US AIRWAYS GROUP, INC.

      By:   _________________________
      Its:

      AMERICA WEST AIRLINES, INC.

      By:   _________________________
      Its:

      US AIRWAYS, INC.

      By:   _________________________
      Its:

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            *** CERTAIN CONFIDENTIAL INFORMATION HAS BEEN OMITTED AND
                FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
                    COMMISSION PURSUANT TO RULE 24b-2 OF THE
                   SECURITIES EXCHANGE ACT OF 1934, AS AMENDED

                             LETTER AGREEMENT NO. 3

                                                        As of September 27, 2005

US Airways Group, Inc.
US Airways, Inc.
America West Airlines, Inc.
4000 East Sky Harbor Boulevard
Phoenix, AZ  85034

Re: ADDITIONAL AIRCRAFT

Ladies and Gentlemen,

US Airways, Inc., America West Airlines, Inc. and US Airways Group, Inc. (the
"Buyers"), and AVSA, S.A.R.L. (the "Seller"), have entered into an Airbus A350
Purchase Agreement dated as of the date hereof (the "Agreement"), which covers,
among other things, the sale by the Seller and the purchase by the Buyers of
certain Aircraft under the terms and conditions set forth in said Agreement. The
Buyers and the Seller have agreed to set forth in this Letter Agreement No. 3
(the "Letter Agreement") certain additional terms and conditions regarding the
sale of the Aircraft. Capitalized terms used herein and not otherwise defined in
this Letter Agreement will have the meanings assigned thereto in the Agreement.
Technical and trade terms used but not defined herein or in the Agreement will
be defined as generally accepted in the airline and/or aircraft manufacturing
industries. The terms "herein," "hereof" and "hereunder" and words of similar
import refer to this Letter Agreement.

All of the parties agree that this Letter Agreement will constitute an integral,
nonseverable part of said Agreement, that the provisions of said Agreement are
hereby incorporated herein by reference, and that this Letter Agreement will be
governed by the provisions of said Agreement, except that if the Agreement and
this Letter Agreement have specific provisions which are inconsistent, the
specific provisions contained in this Letter Agreement will govern.

                                                                         LA3-1

AWE/USA--A350
                          PRIVILEGED AND CONFIDENTIAL

<PAGE>

1.    PURCHASE RIGHTS

1.1   The Seller hereby grants the Buyers, acting jointly, the right to purchase
      up to [...***...] A350 aircraft, either as A350-800 aircraft or as
      A350-900 aircraft (the "Additional Aircraft") in addition to the Aircraft.
      The terms and conditions set out in the Agreement will apply to the
      Additional Aircraft, as applicable, [...***...].

1.2   Upon any written request made by the Buyers to the Seller specifying a
      number of Additional Aircraft that the Buyers wish to purchase, the last
      such request to be made not later than [...***...], the Seller will
      promptly provide the Buyers with a proposal for scheduled delivery months
      to be applicable to such Additional Aircraft. Such scheduled delivery
      months will be held for the Buyers during the [...***...] period
      following the date of the Seller's proposal. The Buyers may exercise their
      right to purchase any such Additional Aircraft by written notice to the
      Seller, executed by each Buyer, and by making the Initial Payment and any
      other then due Predelivery Payments applicable under Letter Agreement No.
      11, in respect of such Additional Aircraft, which Additional Aircraft
      shall then become firmly ordered Aircraft with immediate effect. The
      parties will thereafter conclude as soon as possible definitive
      documentation to amend the Agreement accordingly.

1.3   [...***...]

2.    ASSIGNMENT

      Except as set forth in Clause 20.2 of the Agreement, this Letter Agreement
      and the rights and obligations of the Buyers hereunder will not be
      assigned or transferred in any manner without the prior written consent of
      the Seller, and any attempted assignment or transfer in contravention of
      the provisions of this Paragraph 2 will be void and of no force or effect.

3.    COUNTERPARTS

      This Letter Agreement may be signed in any number of separate
      counterparts. Each counterpart, when signed and delivered (including
      counterparts delivered by facsimile transmission), will be an original,
      and the counterparts will together constitute one same instrument.

                                                                           LA3-2
***Confidential Treatment Requested

AWE/USA-A350
                          PRIVILEGED AND CONFIDENTIAL

<PAGE>

      IN WITNESS WHEREOF, these presents were entered into as of the day and
      year first above written.

                                      Very truly yours,

                                      AVSA, S.A.R.L.

                                      By:  _________________________
                                      Its:

      Accepted and Agreed:

      US AIRWAYS GROUP, INC.

      By:  _________________________
      Its:

      AMERICA WEST AIRLINES, INC.

      By:  _________________________
      Its:

      US AIRWAYS, INC.

      By:  _________________________
      Its:

                                                                           LA3-3

AWE/USA--A350
                          PRIVILEGED AND CONFIDENTIAL
<PAGE>

            *** CERTAIN CONFIDENTIAL INFORMATION HAS BEEN OMITTED AND
                FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
                    COMMISSION PURSUANT TO RULE 24b-2 OF THE
                   SECURITIES EXCHANGE ACT OF 1934, AS AMENDED

                             LETTER AGREEMENT NO. 4

                                                        As of September 27, 2005

US Airways Group, Inc.
US Airways, Inc.
America West Airlines, Inc.
4000 East Sky Harbor Boulevard
Phoenix, AZ  85034

Re: CONVERSION RIGHTS

Ladies and Gentlemen,

US Airways, Inc., America West Airlines, Inc., US Airways Group, Inc. (the
"Buyers"), and AVSA, S.A.R.L. (the "Seller"), have entered into an Airbus A350
Purchase Agreement dated as of even date herewith (the "Agreement"), which
covers, among other things, the sale by the Seller and the purchase by the
Buyers of certain Aircraft, under the terms and conditions set forth in said
Agreement. The Buyers and the Seller have agreed to set forth in this Letter
Agreement No. 4 (the "Letter Agreement") certain additional terms and conditions
regarding the sale of the Aircraft. Capitalized terms used herein and not
otherwise defined in this Letter Agreement will have the meanings assigned
thereto in the Agreement. Technical and trade items used but not defined herein
or in the Agreement will be defined as generally accepted in the airline and/or
aircraft manufacturing industries. The terms "herein," "hereof" and "hereunder"
and words of similar import refer to this Letter Agreement.

The parties agree that this Letter Agreement will constitute an integral,
nonseverable part of the Agreement, that the provisions of said Agreement are
hereby incorporated herein by reference, and that this Letter Agreement will be
governed by the provisions of said Agreement, except that if the Agreement and
this Letter Agreement have specific provisions which are inconsistent, the
specific provisions contained in this Letter Agreement will govern.

AWE/USA--A350                                                              LA4-1
                          PRIVILEGED AND CONFIDENTIAL

<PAGE>

1.    [...***...]

2.    [...***...]

***Confidential Treatment Requested
AWE/USA--A350                                                              LA4-2
                          PRIVILEGED AND CONFIDENTIAL

<PAGE>
3.    ASSIGNMENT

      Except as set forth in Clause 20.2 of the Agreement, this Letter Agreement
      and the rights and obligations of the Buyers hereunder will not be
      assigned or transferred in any manner without the prior written consent of
      the Seller, and any attempted assignment or transfer in contravention of
      the provisions of this Paragraph 3 will be void and of no force or effect.

4.    COUNTERPARTS

      This Letter Agreement may be signed in any number of separate
      counterparts. Each counterpart, when signed and delivered (including
      counterparts delivered by facsimile transmission), will be an original,
      and the counterparts will together constitute one same instrument.

AWE/USA--A350                                                              LA4-3
                          PRIVILEGED AND CONFIDENTIAL

<PAGE>

      IN WITNESS WHEREOF, these presents were entered into as of the day and
      year first above written.

                                        Very truly yours,

                                        AVSA, S.A.R.L.

                                        By:  _________________________

                                        Its:

      Accepted and Agreed

      US AIRWAYS GROUP, INC.

      By:  _________________________
      Its:

      AMERICA WEST AIRLINES, INC.

      By:  _________________________
      Its:

      US AIRWAYS, INC.

      By:  _________________________
      Its:

AWE/USA--A350                                                              LA4-4
                          PRIVILEGED AND CONFIDENTIAL
<PAGE>

            ***CERTAIN CONFIDENTIAL INFORMATION HAS BEEN OMITTED AND
                FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
                    COMMISSION PURSUANT TO RULE 24b-2 OF THE
                   SECURITIES EXCHANGE ACT OF 1934, AS AMENDED

                             LETTER AGREEMENT NO. 5

                                                        As of September 27, 2005

US Airways Group, Inc.
US Airways, Inc.
America West Airlines, Inc.
4000 East Sky Harbor Boulevard
Phoenix, AZ  85034

Re: PURCHASE INCENTIVES

Ladies and Gentlemen,

US Airways, Inc., America West Airlines, Inc. and US Airways Group, Inc. (the
"Buyers"), and AVSA, S.A.R.L. (the "Seller"), have entered into an Airbus A350
Purchase Agreement dated as of the date hereof (the "Agreement"), which covers,
among other things, the sale by the Seller and the purchase by the Buyers of
certain Aircraft, under the terms and conditions set forth in said Agreement.
The Buyers and the Seller have agreed to set forth in this Letter Agreement No.
5 (the "Letter Agreement") certain additional terms and conditions regarding the
sale of the Aircraft. Capitalized terms used herein and not otherwise defined in
this Letter Agreement will have the meanings assigned thereto in the Agreement.
Technical and trade terms used but not defined herein or in the Agreement will
be defined as generally accepted in the airline and/or aircraft manufacturing
industries. The terms "herein," "hereof" and "hereunder" and words of similar
import refer to this Letter Agreement.

All of the parties agree that this Letter Agreement will constitute an integral,
nonseverable part of said Agreement, that the provisions of said Agreement are
hereby incorporated herein by reference, and that this Letter Agreement will be
governed by the provisions of said Agreement, except that if the Agreement and
this Letter Agreement have specific provisions which are inconsistent, the
specific provisions contained in this Letter Agreement will govern.

                                                                           LA5-1

AWE/USA-A350

                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

1.    [...***...]

2.    [...***...]

                                                                           LA5-2

*** Confidential Treatment Requested

AWE/USA-A350

                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

3.    ASSIGNMENT

      Except as set forth in Clause 20.2 of the Agreement, this Letter Agreement
      and the rights and obligations of the Buyers hereunder will not be
      assigned or transferred in any manner without the prior written consent of
      the Seller, and any attempted assignment or transfer in contravention of
      the provisions of this Paragraph 3 will be void and of no force or effect.

4.    COUNTERPARTS

      This Letter Agreement may be signed in any number of separate
      counterparts. Each counterpart, when signed and delivered (including
      counterparts delivered by facsimile transmission), will be an original,
      and the counterparts will together constitute one same instrument.

                                                                           LA5-3

AWE/USA-A350

                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

      IN WITNESS WHEREOF, these presents were entered into as of the day and
      year first above written.

                                              Very truly yours,

                                              AVSA, S.A.R.L.

                                              By: ______________________________

                                              Its:

      Accepted and Agreed

      US AIRWAYS GROUP, INC.

      By: ______________________________
      Its:

      AMERICA WEST AIRLINES, INC.

      By: ______________________________
      Its:

      US AIRWAYS, INC.

      By: ______________________________
      Its:

                                                                           LA5-4

AWE/USA-A350

                           PRIVILEGED AND CONFIDENTIAL
<PAGE>

            ***CERTAIN CONFIDENTIAL INFORMATION HAS BEEN OMITTED AND
                FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
                    COMMISSION PURSUANT TO RULE 24b-2 OF THE
                   SECURITIES EXCHANGE ACT OF 1934, AS AMENDED

                             LETTER AGREEMENT NO. 6

                                                        As of September 27, 2005

US Airways Group, Inc.
US Airways, Inc.
America West Airlines, Inc.
4000 East Sky Harbor Boulevard
Phoenix, AZ  85034

Re: SPECIFICATION MATTERS

Ladies and Gentlemen,

US Airways, Inc., America West Airlines, Inc. and US Airways Group, Inc. (the
"Buyers"), and AVSA, S.A.R.L. (the "Seller"), have entered into an Airbus A350
Purchase Agreement dated as of the date hereof (the "Agreement"), which covers,
among other things, the sale by the Seller and the purchase by the Buyers of
certain Aircraft, under the terms and conditions set forth in said Agreement.
The Buyer and the Seller have agreed to set forth in this Letter Agreement No. 6
(the "Letter Agreement") certain additional terms and conditions regarding the
sale of the Aircraft. Capitalized terms used herein and not otherwise defined in
this Letter Agreement will have the meanings assigned thereto in the Agreement.
Technical and trade terms used but not defined herein or in the Agreement will
be defined as generally accepted in the airline and/or aircraft manufacturing
industries. The terms "herein," "hereof" and "hereunder" and words of similar
import refer to this Letter Agreement.

All of the parties agree that this Letter Agreement will constitute an integral,
nonseverable part of said Agreement, that the provisions of said Agreement are
hereby incorporated herein by reference, and that this Letter Agreement will be
governed by the provisions of said Agreement, except that if the Agreement and
this Letter Agreement have specific provisions which are inconsistent, the
specific provisions contained in this Letter Agreement will govern.

                                                                           LA6-1

AWE/USA-A350

                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

1.    SPECIFICATION

      Up to and including the date on which Issue 1 of the Standard
      Specification is published (the "First Production Standard
      Specification"), the Seller and the Buyers agree that the A350-800
      Standard Specification and A350-900 Standard Specification of the A350
      Aircraft will incorporate all development changes reflected in updated
      versions of such standard specification from time to time. [...***...]

      [...***...]

      The Buyers will be invited by the Seller to attend all customer focus
      group meetings ("CFGs") and program progress reviews ("PPRs") with respect
      to the A350 aircraft from the date hereof. The Buyers may, during the CFGs
      and/or the PPRs, make suggestions from time to time with respect to the
      A350-800 Standard Specification or A350-900 Standard Specification as
      applicable with respect to any changes contemplated by the Seller. The
      Seller will make reasonable efforts to accommodate any such suggestions.
      However, any and all changes to any standard specification will be at the
      Seller's sole discretion.

2.    PROPULSION SYSTEMS

2.1   [...***...]

***Confidential Treatment Requested
                                                                           LA6-2

AWE/USA-A350

                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

2.2   [...***...]

3.    MTOW INCREASE

      [...***...]

4.    ASSIGNMENT

      Except as set forth in Clause 20.2 of the Agreement, this Letter Agreement
      and the rights and obligations of the Buyers hereunder will not be
      assigned or transferred in any manner without the prior written consent of
      the Seller, and any attempted assignment or transfer in contravention of
      the provisions of this Paragraph 4 will be void and of no force or effect.

5.    COUNTERPARTS

      This Letter Agreement may be signed in any number of separate
      counterparts. Each counterpart, when signed and delivered (including
      counterparts delivered by facsimile transmission), will be an original,
      and the counterparts will together constitute one same instrument.

***Confidential Treatment Requested
                                                                           LA6-3

AWE/USA-A350

                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

      IN WITNESS WHEREOF, these presents were entered into as of the day and
      year first above written.

                                              Very truly yours,

                                              AVSA, S.A.R.L.

                                              By: ______________________________
                                              Its:

      Accepted and Agreed

      US AIRWAYS, INC.

      By: ______________________________
      Its:

      AMERICA WEST AIRLINES, INC.

      By: ______________________________
      Its:

      US AIRWAYS GROUP, INC.

      By: ______________________________
      Its:

                                                                           LA6-4

AWE/USA-A350

                           PRIVILEGED AND CONFIDENTIAL
<PAGE>

            ***CERTAIN CONFIDENTIAL INFORMATION HAS BEEN OMITTED AND
               FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
                    COMMISSION PURSUANT TO RULE 24b-2 OF THE
                  SECURITIES EXCHANGE ACT OF 1934, AS AMENDED

                             LETTER AGREEMENT NO. 7

                                                        As of September 27, 2005

US Airways Group, Inc.
US Airways, Inc.
America West Airlines, Inc.
4000 East Sky Harbor Boulevard
Phoenix, AZ 85034

Re: PRODUCT SUPPORT

Ladies and Gentlemen,

US Airways, Inc., America West Airlines, Inc., US Airways Group, Inc. (the
"Buyers"), and AVSA, S.A.R.L. (the "Seller"), have entered into an Airbus A350
Purchase Agreement dated as of even date herewith (the "Agreement"), which
covers, among other things, the sale by the Seller and the purchase by the
Buyers of certain Aircraft, under the terms and conditions set forth in said
Agreement. The Buyers and the Seller have agreed to set forth in this Letter
Agreement No. 7 (the "Letter Agreement") certain additional terms and conditions
regarding the sale of the Aircraft. Capitalized terms used herein and not
otherwise defined in this Letter Agreement will have the meanings assigned
thereto in the Agreement. Technical and trade terms used but not defined herein
or in the Agreement will be defined as generally accepted in the airline and/or
aircraft manufacturing industries. The terms "herein," "hereof" and "hereunder"
and words of similar import refer to this Letter Agreement.

All of the parties agree that this Letter Agreement will constitute an integral,
nonseverable part of said Agreement, that the provisions of said Agreement are
hereby incorporated herein by reference, and that this Letter Agreement will be
governed by the provisions of said Agreement, except that if the Agreement and
this Letter Agreement have specific provisions which are inconsistent, the
specific provisions contained in this Letter Agreement will govern.

                                                                           LA7-1

AWE/USA--A350

                          PRIVILEGED AND CONFIDENTIAL

<PAGE>

1.      TRAINING SUPPORT

1.1     [...***...]

1.2     [...***...]

1.3     [...***...]

2.      TECHNICAL DATA AND SOFTWARE SERVICES

2.1     The first sentence of Clause 14.5 of the Agreement is superseded and
        replaced by the following:

     QUOTE

        Revision service will be provided [...***...] for a period
        of [...***...] after Delivery of the last Aircraft.

     UNQUOTE

2.2     ELOGBOOK

        The Buyers will be entitled to obtain the Airbus eLogbook under the
        license conditions as set forth in Exhibit H to the Agreement. The
        Airbus eLogbook tool allows the airline pilots to enter standardized
        pilot reports. [...***...]

***Confidential Treatment Requested
                                                                           LA7-2

AWE/USA--A350

                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

        [...***...]

2.3     ADOC Job Card Publisher

        The Buyers will be entitled to one (1) license of the ADOC Job Card
        Publisher. With this package, which is based on the ADOC Job Card
        Publisher software module, the Buyers will be able to build their own
        database from their SGML documentation (including in-house
        modifications) using one (1) customized job card model developed by
        Airbus and based on specifications of the content and structure of the
        job cards provided by the Airline.

        ADOC Job Card Publisher integrates with the Buyers' Maintenance
        Information Systems. The Buyers are responsible to integrate the
        Maintenance Information System with ADOC Job Card Publisher.

        [...***...]

3.      OPERATION SUPPORT

        The Seller will provide to the Buyers the following software tools
        during the [...***...] period preceding delivery of the first Aircraft
        and revision service therefor [...***...], including:

        (i)     [...***...]

        (ii)    [...***...]

                                                                           LA7-3

***Confidential Treatment Requested

AWE/USA--A350

                          PRIVILEGED AND CONFIDENTIAL

<PAGE>

        (iii)   [...***...]

        (iv)    [...***...]

        [...***...]

4.      [...***...]

4.1     [...***...]

     QUOTE

        [...***...]

     UNQUOTE

4.2     [...***...]

     QUOTE

        [...***...]

     UNQUOTE

                                                                           LA7-4

***Confidential Treatment Requested

AWE/USA--A350

                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

5.      AIRCRAFT MAINTENANCE MANUAL LIMITS

        The Seller endeavors to harmonize all relevant production limits with
        the relevant limits specified in the Aircraft Maintenance Manual
        provided to the Buyers pursuant to Clause 14 of the Agreement.

6.      ETOPS SUPPORT

        [...***...] The Seller will support the Buyers' efforts to obtain FAA
        approval for ETOPS operation of the A350-800 Aircraft.

7.      [...***...]

8.      [...***...]

                                                                           LA7-5

***Confidential Treatment Requested

AWE/USA--A350

                          PRIVILEGED AND CONFIDENTIAL

<PAGE>

     QUOTE

        [...***...]

     UNQUOTE

9.      AIRBUS ONLINE CONTENT MANAGEMENT

        On Line Content Management enables the Buyers to access from the Airbus
        on-line portal Airbus Technical Data (AMM, IPC, TSM, ASM, AWL, AWM, SRM,
        NTM) in order to perform modifications to this Technical Data prior to
        producing the AirN@v consultation database used by the Buyers'
        operations.

        Tasks regarding administration of the hardware and software will be
        performed by the Seller. Modification of the Technical Data carried out
        by the Buyers authors remains under the full responsibility of the
        Buyers.

        [...***...]
                                                                           LA7-6
***Confidential Treatment Requested
AWE/USA--A350

                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

10.     [...***...]

11.     ASSIGNMENT

        Except as set forth in Clause 20.2 of the Agreement, this Letter
        Agreement and the rights and obligations of the Buyers hereunder will
        not be assigned or transferred in any manner without the prior written
        consent of the Seller, and any attempted assignment or transfer in
        contravention of the provisions of this Paragraph 11 will be void and of
        no force or effect.

12.     COUNTERPARTS

        This Letter Agreement may be signed in any number of separate
        counterparts. Each counterpart, when signed and delivered (including
        counterparts delivered by facsimile transmission), will be an original,
        and the counterparts will together constitute one same instrument.

                                                                           LA7-7

*** Confidential Treatment Requested

AWE/USA--A350

                          PRIVILEGED AND CONFIDENTIAL

<PAGE>

IN WITNESS WHEREOF, these presents were entered into as of the day and year
first above written.

                                                  Very truly yours,

                                                  AVSA, S.A.R.L.

                                                  By: __________________________
                                                  Its:

 Accepted and Agreed

 US AIRWAYS GROUP, INC.

 By: _________________________
 Its:

 AMERICA WEST AIRLINES, INC.

 By: _________________________
 Its:

 US AIRWAYS, INC.

 By: _________________________
 Its:

                                                                           LA7-8

AWE/USA--A350

                          PRIVILEGED AND CONFIDENTIAL
<PAGE>

            *** CERTAIN CONFIDENTIAL INFORMATION HAS BEEN OMITTED AND
                FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
                    COMMISSION PURSUANT TO RULE 24b-2 OF THE
                   SECURITIES EXCHANGE ACT OF 1934, AS AMENDED

                             LETTER AGREEMENT NO. 8A

                                                        As of September 27, 2005

 US Airways Group, Inc.
 US Airways, Inc.
 America West Airlines, Inc.
 4000 East Sky Harbor Boulevard
 Phoenix, AZ  85034

Re: A350-800 with GEnx-1A72 PERFORMANCE GUARANTEES

Dear  Ladies and Gentlemen:

US Airways, Inc., America West Airlines, Inc. and US Airways Group, Inc. (the
"Buyers"), and AVSA, S.A.R.L. (the "Seller"), have entered into an Airbus A350
Purchase Agreement dated as of even date herewith (the "Agreement"), which
covers, among other things, the sale by the Seller and the purchase by the
Buyers of certain A350-800 Aircraft, under the terms and conditions set forth in
said Agreement. The Buyers and the Seller have agreed to set forth in this
Letter Agreement No. 8A (the "Letter Agreement") certain additional terms and
conditions regarding the sale of the A350-800 Aircraft. Capitalized terms used
herein and not otherwise defined in this Letter Agreement will have the meanings
assigned thereto in the Agreement. Technical and trade terms used but not
defined herein or in the Agreement will be defined as generally accepted in the
airline and/or aircraft manufacturing industries. The terms "herein," "hereof"
and "hereunder" and words of similar import refer to this Letter Agreement.

All of the parties agree that this Letter Agreement will constitute an integral,
nonseverable part of said Agreement, that the provisions of said Agreement are
hereby incorporated herein by reference, and that this Letter Agreement will be
governed by the provisions of said Agreement, except that if the Agreement and
this Letter Agreement have specific provisions which are inconsistent, the
specific provisions contained in this Letter Agreement will govern.

                                                                         LA 8A-1
AWE/USA - A350
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

      The Seller represents and warrants that the Manufacturer has provided to
      the Seller the performance, noise and weight guarantees (the "Guarantees")
      that are reproduced below between the words QUOTE and UNQUOTE, subject to
      the terms, conditions, limitations and restrictions set forth below. The
      Seller hereby assigns to the Buyers, and the Buyers hereby accept, as to
      each A350-800 Aircraft delivered to the Buyers under the Agreement, all of
      the Seller's rights and obligations with respect to such A350-800 Aircraft
      in its capacity as "Buyers" as aforesaid under the said Guarantees, and
      the Seller subrogates the Buyers into all such rights and obligations in
      respect of the A350-800 Aircraft. The Seller hereby warrants to the Buyers
      that (i) it has all requisite authority to make the foregoing assignment
      to and to effect the foregoing subrogation in favor of the Buyers, (ii)
      such assignment and subrogation are effective to confer on the Buyers all
      of the foregoing rights and obligations of the Seller, (iii) the
      provisions so assigned are in full force and effect and have not been
      amended prior to the date hereof, and (iv) the Seller will not enter into
      any amendment of the provisions so assigned without the prior written
      consent of the Buyers.

QUOTE

1     AIRCRAFT CONFIGURATION

1.1   The Guarantees defined below are applicable to the A350-800 Aircraft
      powered by General Electric GEnx-1A72 engines, as described in the
      Standard Specification Ref. G.000.08000 Issue B dated 30th June 2005,
      without taking into account any further changes thereto as provided in the
      Agreement, herein after referred as "the Specification" without taking
      into account any further changes thereto as provided in the Agreement.

2     GUARANTEED PERFORMANCE

2.1   Take-off Field Length

      FAR take-off field length ("TOFL") at an Aircraft gross weight of 540,133
      lb (245,000 kg) at the start of Take-Off Distance Available (TODA) at Sea
      Level pressure altitude in ISA+15 degrees C conditions will be not more
      than a guaranteed value of [...***...].

2.2   Second Segment Climb

     The Aircraft will meet FAR 25 regulations for one engine inoperative climb
      after take-off, undercarriage retracted, at a weight corresponding to the
      stated weight at the start of ground run, at the altitude and temperature,
      and in the configuration of flap angle and safety speed required to comply
      with the performance guaranteed in paragraph 2.1 and 2.3.

                                                                         LA 8A-2
***Confidential Treatment Requested
AWE/USA - A350
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

2.3   Take-off Weight

2.3.1 When operated under the following conditions (representative of FRA 25R)

<TABLE>
<S>                                                      <C>
Pressure altitude                                        : 364 ft
Ambient temperature                                      : 24 degrees C
Take-off run available                                   : 13,123 ft
Take-off distance available                              : 13,123 ft
Accelerate-stop distance available                       : 13,123 ft
Slope                                                    : -0.26% (downhill)
Wind                                                     : Zero
Line-up allowance TOD                                    : 80 ft
Line-up allowance ASD                                    : 153 ft
Obstacles (Height/Distance above/from start of TODA):      -28ft/13,488ft
                                                           -23ft/13,980ft
                                                           -21ft/14,236ft
                                                           59ft/17,388ft
                                                           60ft/17,598ft
                                                           61ft/17,795ft
                                                           62ft/18,035ft
                                                           65ft/18,848ft
                                                           67ft/19,918ft
                                                           76ft/23,402ft
</TABLE>

      the maximum permissible take-off weight at the start of Take-off Distance
      Available will be not less than a guaranteed value of [...***...]

2.3.2 When operated under the following conditions (representative of PHL 27L)

<TABLE>
<S>                                                      <C>
Pressure altitude                                        : 10 ft
Ambient temperature                                      : 30 degrees C
Take-off run available                                   : 10,506 ft
Take-off distance available                              : 10,506 ft
Accelerate-stop distance available                       : 10,506 ft
Slope                                                    : 0.11% (uphill)
Wind                                                     : Zero
Line-up allowance TOD                                    : 80 ft
Line-up allowance ASD                                    : 153 ft
Obstacles (Height/Distance above/from start of TODA):      33ft/11,312ft
                                                           38ft/12,036ft
</TABLE>

      the maximum permissible take-off weight at the start of Take-off Distance
      Available will be

                                                                         LA 8A-3
***Confidential Treatment Requested
AWE/USA - A350
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

      not less than a guaranteed value of [...***...].

2.3.3 When operated under the following conditions (representative of PHX 26)

<TABLE>
<S>                                                      <C>
Pressure altitude                                        : 1,135 ft
Take-off run available                                   : 11,490 ft
Take-off distance available                              : 11,490 ft
Accelerate-stop distance available                       : 11,490 ft
Slope                                                    : -0.21% (downhill)
Wind                                                     : Zero
Line-up allowance TOD                                    : 80 ft
Line-up allowance ASD                                    : 153 ft
Obstacles (Height/Distance above/from start of TODA):     -13ft/12,506ft
                                                          -5ft/12,852ft
                                                          36ft/13,792ft
                                                          42ft/14,510ft
                                                          195ft/22,434ft
</TABLE>

      the maximum permissible take-off weight at the start of Take-off Distance
      Available will be not less than a guaranteed value of

<TABLE>
<S>                                      <C>
Ambient temperature of 41 degrees C:     [...***...]
Ambient temperature of 46 degrees C:     [...***...]
</TABLE>

2.3.4 When operated under the following conditions (representative of TLV 26)

<TABLE>
<S>                                                          <C>
Pressure altitude                                            : 135 ft
Ambient temperature                                          : 32 degrees C
Take-off run available                                       : 11,998 ft
Take-off distance available                                  : 12,392 ft
Accelerate-stop distance available                           : 12,293 ft
Slope                                                        : -0.32% (downhill)
Wind                                                         : Zero
Line-up allowance TOD                                        : 80 ft
Line-up allowance ASD                                        : 153 ft
Obstacles (Height/Distance above/from start of TODA)         : none
</TABLE>

      the maximum permissible take-off weight at the start of Take-off Distance
      Available will be not less than a guaranteed value of [...***...].

2.3.5 When operated under the following conditions (representative of NRT 34L)

                                                                         LA 8A-4
***Confidential Treatment Requested
AWE/USA - A350
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

<TABLE>
<S>                                                                     <C>
Pressure altitude                                                       : 139 ft
Ambient temperature                                                     : 29 degrees C
Take-off run available                                                  : 13,123 ft
Take-off distance available                                             : 13,123 ft
Accelerate-stop distance available                                      : 13,123 ft
Slope                                                                   : -0.07% (downhill)
Wind                                                                    : Zero
Line-up allowance TOD                                                   : 80 ft
Line-up allowance ASD                                                   : 153 ft
Obstacles (Height/Distance above/from start of TODA):                    -2ft/13,905ft
                                                                         4ft/14,541ft
                                                                         8ft/14,780ft
                                                                         25ft/15,892ft
                                                                         28ft/16,030ft
                                                                         29ft/16,269ft
                                                                         30ft/16,303ft
                                                                         32ft/16,967ft
                                                                         53ft/18,187ft
                                                                         57ft/19,378ft
                                                                         65ft/20,659ft
</TABLE>

      the maximum permissible take-off weight at the start of Take-off Distance
      Available will be not less than a guaranteed value of [...***...].

2.4   Landing Field Length

      FAR certified dry landing field length ("LFL") at an Aircraft gross weight
      of 401,241 lb (182,000 kg) at Sea Level pressure altitude will not be more
      than a guaranteed value of [...***...].

2.5   En-route One Engine Inoperative

      The A350-800 Aircraft will meet the FAR regulations minimum en-route climb
      one engine inoperative and the other operating at the maximum continuous
      thrust with anti-icing off at an A350-800 Aircraft gross weight of 500,000
      lb in the cruise configuration in ISA+10C conditions at a guaranteed
      pressure altitude of not less than [...***...]

2.6   Approach Climb

2.6.1 The A350-800 Aircraft will meet FAR regulations approach climb gradient
      one engine inoperative and the other operating at the maximum go-round
      thrust with air conditioning on and anti-icing off at sea level pressure
      altitude at an A350-800 Aircraft gross weight of 401,241

***Confidential Treatment Requested

                                                                         LA 8A-5
AWE/USA - A350
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

      lb at a temperature of not less than the guarantee value of [...***...].

2.6.2 The A350-800 Aircraft will meet FAR regulations approach climb gradient
      one engine inoperative and the other operating at the maximum go-round
      thrust with air conditioning on and anti-icing off at a pressure altitude
      of 5,000 feet at an A350-800 Aircraft gross weight of 401,241 lb at a
      temperature of not less than the guarantee value of [...***...] and a
      nominal value of [...***...].

2.7   Specific Range

      The nautical miles per pound of fuel at an A350-800 Aircraft gross weight
      of 500,000 lb at a pressure altitude of 33,000 ft in ISA+10C conditions at
      a true Mach number of 0.82 will not be less than a guaranteed value of
      [...***...].

      The nautical miles per pound of fuel at an A350-800 Aircraft gross weight
      of 490,000 lb at a pressure altitude of 35,000 ft in ISA+10C conditions at
      a true Mach number of 0.82 will not be less than a guaranteed value of
      [...***...].

      The nautical miles per pound of fuel at an A350-800 Aircraft gross weight
      of 480,000 lb at a pressure altitude of 33,000 ft in ISA+10C conditions at
      a true Mach number of 0.84 will not be less than a guaranteed value of
      [...***...].

      The nautical miles per pound of fuel at an A350-800 Aircraft gross weight
      of 470,000 lb at a pressure altitude of 35,000 ft in ISA+10C conditions at
      a true Mach number of 0.84 will not be less than a guaranteed value of
      [...***...].

2.8   Initial Cruise Altitude

      At an A350-800 gross weight of 527,000 lb (representing the estimated
      weight at start of cruise following a take-off at sea level at Maximum
      Take-off Weight) in ISA+10C conditions the pressure altitude for:

            1.    Level flight at a true Mach number of 0.82 using a thrust not
                  exceeding maximum cruise thrust

            2.    A rate of climb of not less than then 300 ft/min at a true
                  Mach number of 0.82 using a thrust not exceeding maximum climb
                  thrust

            3.    A buffet maneuver margin of not less than 0.3g at a true Mach
                  number of 0.82

      will be not less than [...***...].

***Confidential Treatment Requested

                                                                         LA 8A-6
AWE/USA - A350
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

2.9   Speed

      Level flight speed at an A350-800 Aircraft gross weight of 527,000 lb at a
      pressure altitude of 33,000 ft in ISA+10C conditions using a thrust not
      exceeding maximum cruise thrust will be not less than a guaranteed true
      Mach number of [...***...].

3     MISSION GUARANTEES

3.1   Mission Usable Load: TLV - PHL

      The A350-800 Aircraft will be capable of carrying a guaranteed Usable Load
      (as defined in Paragraph 3.11 below) of not less than [...***...] over a
      still air stage distance of 5,849 nautical miles (representative of TLV to
      PHL mission with a 58 knots headwind) when operated under the conditions
      defined below:

3.1.1 The departure airport conditions are such to allow the required Takeoff
      Weight to be used without any restriction. Pressure altitude is 135 ft.

      The destination airport conditions are such to allow the required Landing
      Weight to be used without any restriction. Pressure altitude is 10 ft.

3.1.2 An allowance of 570 lb of fuel and 9 minutes is considered for engine
      start-up and taxi-out.

3.1.3 An allowance of 1,840 lb of fuel and 3 minutes is included for take-off
      and climb to 1,635 ft pressure altitude with acceleration to climb speed
      at a temperature of 29 degrees C. No credit is taken for the distance
      covered in these segments.

3.1.4 Climb from 1,635 ft pressure altitude up to cruise altitude using maximum
      climb thrust, cruise at a fixed Mach number of M=0.82 at pressure
      altitudes of 31,000 ft, 35,000 ft and 39,000 ft and descent to 1,510 ft
      pressure altitude are conducted in ISA+10 degrees C conditions. Climb and
      descent speeds below 10,000 ft will be 250 knots CAS. A wind component of
      70% of cruise wind has been considered during climb and descent.

3.1.5 An allowance of 430 lb of fuel and 4 minutes is considered for approach
      and landing at the destination airport. No credit is taken for the
      distance covered in these segments.

3.1.6 Trip fuel is defined as the fuel used during engine start-up and taxi-out,
      take-off, climb, cruise, descent, approach and landing as defined in
      paragraphs 3.1.2 to 3.1.5 above. Stage distance is defined as the distance
      covered during climb, cruise and descent as described in paragraph 3.1.4
      above.

***Confidential Treatment Requested
                                                                         LA 8A-7
AWE/USA - A350
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

3.1.7 At the end of approach and landing 14,800 lb of usable fuel will remain in
      the tanks. This represents the estimated fuel required for:

      1)    En-route reserves: 4% of trip time representing use of re-dispatch
            procedures

      2)    Missed approach at destination

      3)    Diversion in ISA+10 degrees C conditions over a still air distance
            of 150 nautical miles starting and ending at 1,500 ft pressure
            altitude and using long range procedures

      4)    Holding for 30 minutes at 1,500 ft pressure altitude in
            ISA+10 degrees C conditions

      5)    An allowance of fuel for approach and landing at alternate airport

3.2   Mission fuel burn: TLV - PHL

      In carrying a fixed Usable Load of 136,780 lb over a still air stage
      distance of 5,849 nautical miles (representative of TLV to PHL mission
      with a 58 knots headwind) the trip fuel burnt when operated under the
      conditions defined in paragraphs 3.1.1 to 3.1.7 inclusive above will be
      not more than a guaranteed value of [...***...] and the block time will
      not be more than a guaranteed value of [...***...]. Block time is defined
      as the time for engine start-up and taxi-out, take-off, climb, cruise,
      descent, approach and landing as defined in paragraphs 3.1.2 to 3.1.5
      above.

3.3   Mission Usable Load: FRA - PHX

      The A350-800 Aircraft will be capable of carrying a guaranteed Usable Load
      of not less than [...***...] over a still air stage distance of 5,482
      nautical miles (representative of FRA to PHX mission with a 40 knots
      headwind) when operated under the conditions defined below:

3.3.1 The departure airport conditions are such to allow the required Takeoff
      Weight to be used without any restriction. Pressure altitude is 364 ft.

      The destination airport conditions are such to allow the required Landing
      Weight to be used without any restriction. Pressure altitude is 1,135 ft.

3.3.2 An allowance of 570 lb of fuel and 9 minutes is considered for engine
      start-up and taxi-out.

3.3.3 An allowance of 1,750 lb of fuel and 3 minutes is included for take-off
      and climb to 1,864 ft pressure altitude with acceleration to climb speed
      at a temperature of 21 degrees C. No credit is taken for the distance
      covered in these segments.

3.3.4 Climb from 1,864 ft pressure altitude up to cruise altitude using maximum
      climb thrust, cruise at a fixed Mach number of M=0.82 at pressure
      altitudes of 31,000 ft, 35,000 ft and 39,000 ft and descent to 2,635 ft
      pressure altitude are conducted in ISA+10 degrees C conditions.

***Confidential Treatment Requested

                                                                         LA 8A-8
AWE/USA - A350
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

      Climb and descent speeds below 10,000 ft will be 250 knots CAS. A wind
      component of 70% of cruise wind has been considered during climb and
      descent.

3.3.5 An allowance of 440 lb of fuel and 4 minutes is considered for approach
      and landing at the destination airport. No credit is taken for the
      distance covered in these segments.

3.3.6 Trip fuel is defined as the fuel used during engine start-up and taxi-out,
      take-off, climb, cruise, descent, approach and landing and manoeuvre as
      defined in paragraphs 3.3.2 to 3.3.5 above. Stage distance is defined as
      the distance covered during climb, cruise and descent as described in
      paragraph 3.3.4 above.

3.3.7 At the end of approach and landing 14,600 lb of usable fuel will remain in
      the tanks. This represents the estimated fuel required for:

      1)    En-route reserves: 4% of trip time representing use of re-dispatch
            procedures

      2)    Missed approach at destination

      3)    Diversion in ISA+10 degrees C conditions over a still air distance
            of 150 nautical miles starting and ending at 1,500 ft pressure
            altitude and using long range procedures

      4)    Holding for 30 minutes at 1,500 ft pressure altitude in
            ISA+10 degrees C conditions

      5)    An allowance of fuel for approach and landing at alternate airport

3.4   Mission fuel burn: FRA - PHX

      In carrying a fixed Usable Load of 140,630 lb over a still air stage
      distance of 5,482 nautical miles (representative of FRA to PHX mission
      with a 40 knots headwind) the trip fuel burnt when operated under the
      conditions defined in paragraphs 3.3.1 to 3.3.7 inclusive above will be
      not more than a guaranteed value of [...***...] and the block time will
      not be more than a guaranteed value of [...***...].

      Block time is defined as the time for engine start-up and taxi-out,
      take-off, climb, cruise, descent, approach and landing as defined in
      paragraphs 3.3.2 to 3.3.5 above.

3.5   Mission Usable Load: PHX - FRA (41 degrees C at PHX)

      The A350-800 Aircraft will be capable of carrying a guaranteed Usable Load
      of not less than [...***...] over a still air stage distance of 4,980
      nautical miles (representative of PHX to FRA mission with a 5 knots
      tailwind) when operated under the conditions defined below:

3.5.1 The departure airport conditions (representative of PHX runway 26) are as
      defined in paragraph 2.3.3 above (ambient temperature of 41 degrees C).
      The destination airport conditions are such to allow the required Landing
      Weight to be used without any restriction. Pressure altitude is 364 ft.

***Confidential Treatment Requested

                                                                         LA 8A-9
AWE/USA - A350
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

3.5.2 An allowance of 570 lb of fuel and 9 minutes is considered for engine
      start-up and taxi-out.

3.5.3 An allowance of 1,730 lb of fuel and 3 minutes is included for take-off
      and climb to 2,635 ft pressure altitude with acceleration to climb speed
      at a temperature of 38 degrees C. No credit is taken for the distance
      covered in these segments.

3.5.4 Climb from 2,635 ft pressure altitude up to cruise altitude using maximum
      climb thrust, cruise at a fixed Mach number of M=0.82 at pressure
      altitudes of 33,000 ft, 37,000 ft and 41,000 ft and descent to 1,864 ft
      pressure altitude are conducted in ISA+10 degrees C conditions. Climb and
      descent speeds below 10,000 ft will be 250 knots CAS. A wind component of
      70% of cruise wind has been considered during climb and descent.

3.5.5 An allowance of 410 lb of fuel and 4 minutes is considered for approach
      and landing at the destination airport. No credit is taken for the
      distance covered in these segments.

3.5.6 Trip fuel is defined as the fuel used during engine start-up and taxi-out,
      take-off, climb, cruise, descent, approach and landing and manoeuvre as
      defined in paragraphs 3.5.2 to 3.5.5 above.

      Stage distance is defined as the distance covered during climb, cruise and
      descent as described in paragraph 3.5.4 above.

3.5.7 At the end of approach and landing 13,320 lb of usable fuel will remain in
      the tanks. This represents the estimated fuel required for:

      1)    En-route reserves: 4% of trip time representing use of re-dispatch
            procedures

      2)    Missed approach at destination

      3)    Diversion in ISA+10 degrees C conditions over a still air distance
            of 150 nautical miles starting and ending at 1,500 ft pressure
            altitude and using long range procedures

      4)    Holding for 30 minutes at 1,500 ft pressure altitude in
            ISA+10 degrees C conditions

      5)    An allowance of fuel for approach and landing at alternate airport

3.6   Mission fuel burn: PHX - FRA (41 degrees C at PHX)

      In carrying a fixed Usable Load of 113,760 lb over a still air stage
      distance of 4,980 nautical miles (representative of PHX to FRA mission
      with a 5 knots tailwind) the trip fuel burnt when operated under the
      conditions defined in paragraphs 3.5.1 to 3.5.7 inclusive above will be
      not more than a guaranteed value of [...***...] and the block time will
      not be more than a guaranteed value of [...***...]. Block time is defined
      as the time for engine start-up and taxi-out, take-off, climb, cruise,
      descent, approach and landing as defined in paragraphs 3.5.2 to 3.5.5
      above.

***Confidential Treatment Requested

                                                                        LA 8A-10
AWE/USA - A350
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

3.7   Mission Usable Load: PHL - NRT

      The A350-800 Aircraft will be capable of carrying a guaranteed Usable Load
      of not less than [...***...] over a still air stage
      distance of 6,542 nautical miles (representative of PHL to NRT mission
      with a 38 knots headwind) when operated under the conditions defined
      below:

3.7.1 The departure airport conditions (representative of PHL runway 27L) are as
      defined in paragraph 2.3.2 above.

      The destination airport conditions are such to allow the required Landing
      Weight to be used without any restriction. Pressure altitude is 139 ft.

3.7.2 An allowance of 570 lb of fuel and 9 minutes is considered for engine
      start-up and taxi-out.

3.7.3 An allowance of 1,800 lb of fuel and 3 minutes is included for take-off
      and climb to 1,510 ft pressure altitude with acceleration to climb speed
      at a temperature of 27 degrees C. No credit is taken for the distance
      covered in these segments.

3.7.4 Climb from 1,510 ft pressure altitude up to cruise altitude using maximum
      climb thrust, cruise at a fixed Mach number of M=0.82 at pressure
      altitudes of 31,000 ft, 35,000 ft and 39,000 ft and descent to 1,639 ft
      pressure altitude are conducted in ISA+10 degrees C conditions. Climb and
      descent speeds below 10,000 ft will be 250 knots CAS. A wind component of
      70% of cruise wind has been considered during climb and descent.

3.7.5 An allowance of 420 lb of fuel and 4 minutes is considered for approach
      and landing at the destination airport. No credit is taken for the
      distance covered in these segments.

3.7.6 Trip fuel is defined as the fuel used during engine start-up and taxi-out,
      take-off, climb, cruise, descent, approach and landing and manoeuvre as
      defined in paragraphs 3.7.2 to 3.7.5 above. Stage distance is defined as
      the distance covered during climb, cruise and descent as described in
      paragraph 3.7.4 above.

3.7.7 At the end of approach and landing 14,800 lb of usable fuel will remain in
      the tanks. This represents the estimated fuel required for:

      1)    En-route reserves: 4% of trip time representing use of re-dispatch
            procedures

      2)    Missed approach at destination

      3)    Diversion in ISA+10 degrees C conditions over a still air distance
            of 150 nautical miles starting and ending at 1,500 ft pressure
            altitude and using long range procedures

      4)    Holding for 30 minutes at 1,500 ft pressure altitude in
            ISA+10 degrees C conditions

      5)    An allowance of fuel for approach and landing at alternate airport

                                                                        LA 8A-11
***Confidential Treatment Requested
AWE/USA - A350
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

3.8   Mission fuel burn: PHL - NRT

      In carrying a fixed Usable Load of 120,290 lb over a still air stage
      distance of 6,542 nautical miles (representative of PHL to NRT mission
      with a 38 knots headwind) the trip fuel burnt when operated under the
      conditions defined in paragraphs 3.7.1 to 3.7.7 inclusive above will be
      not more than a guaranteed value of [...***...] and the block time will
      not be more than a guaranteed value of [...***...]. Block time is defined
      as the time for engine start-up and taxi-out, take-off, climb, cruise,
      descent, approach and landing as defined in paragraphs 3.7.2 to 3.7.5
      above.

3.9   Mission Usable Load: PHX - NRT (41 degrees C at PHX)

      The A350-800 Aircraft will be capable of carrying a guaranteed Usable Load
      of not less than [...***...] over a still air stage
      distance of 5,971 nautical miles (representative of PHX to NRT mission
      with a 67 knots headwind) when operated under the conditions defined
      below:

3.9.1 The departure airport conditions (representative of PHX runway 26) are as
      defined in paragraph 2.3.3 above (ambient temperature of 41 degrees C).
      The destination airport conditions are such to allow the required Landing
      Weight to be used without any restriction. Pressure altitude is 139 ft.

3.9.2 An allowance of 570 lb of fuel and 9 minutes is considered for engine
      start-up and taxi-out.

3.9.3 An allowance of 1,730 lb of fuel and 3 minutes is included for take-off
      and climb to 2,635 ft pressure altitude with acceleration to climb speed
      at a temperature of 38 degrees C. No credit is taken for the distance
      covered in these segments.

3.9.4 Climb from 2,635 ft pressure altitude up to cruise altitude using maximum
      climb thrust, cruise at a fixed Mach number of M=0.82 at pressure
      altitudes of 35,000 ft and 39,000 ft and descent to 1,639 ft pressure
      altitude are conducted in ISA+10 degrees C conditions.

      Climb and descent speeds below 10,000 ft will be 250 knots CAS. A wind
      component of 70% of cruise wind has been considered during climb and
      descent.

3.9.5 An allowance of 420 lb of fuel and 4 minutes is considered for approach
      and landing at the destination airport. No credit is taken for the
      distance covered in these segments.

3.9.6 Trip fuel is defined as the fuel used during engine start-up and taxi-out,
      take-off, climb, cruise, descent, approach and landing and manoeuvre as
      defined in paragraphs 3.9.2 to 3.9.5 above. Stage distance is defined as
      the distance covered during climb, cruise and descent as described in
      paragraph 3.9.4 above.

                                                                        LA 8A-12
***Confidential Treatment Requested
AWE/USA - A350
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

3.9.7 At the end of approach and landing 13,460 lb of usable fuel will remain in
      the tanks. This represents the estimated fuel required for:

      1)    En-route reserves: 4% of trip time representing use of re-dispatch
            procedures

      2)    Missed approach at destination

      3)    Diversion in ISA+10 degrees C conditions over a still air distance
            of 150 nautical miles starting and ending at 1,500 ft pressure
            altitude and using long range procedures

      4)    Holding for 30 minutes at 1,500 ft pressure altitude in ISA+10
            degrees C conditions

      5)    An allowance of fuel for approach and landing at alternate airport

3.10  Mission fuel burn: PHX - NRT (41 degrees C at PHX)

      In carrying a fixed Usable Load of 93,790 lb over a still air stage
      distance of 5,971 nautical miles (representative of PHX to NRT mission
      with a 67 knots headwind) the trip fuel burnt when operated under the
      conditions defined in paragraphs 3.9.1 to 3.9.7 inclusive above will be
      not more than a guaranteed value of [...***...] and the block time will
      not be more than a guaranteed value of [...***...]. Block time is defined
      as the time for engine start-up and taxi-out, take-off, climb, cruise,
      descent, approach and landing as defined in paragraphs 3.9.2 to 3.9.5
      above.

3.11  For the mission "Usable Load" guarantees defined in Paragraphs 3.1, 3.3,
      3.5, 3.7 and 3.9 above, the guaranteed usable loads are calculated as Zero
      Fuel Weight minus the Manufacturer's Weight Empty as defined in the
      Specification which will be derived from the weighing of the Aircraft.

4     Structural Usable Load

      The Seller guarantees that the difference between:

      -     the Maximum Zero Fuel Weight (MZFW) of the Aircraft (as defined in
            the A350-800 Standard Specification set forth in Paragraph 1) and

      -     the Manufacturer's Weight Empty (as defined in the A350-800 Standard
            Specification set forth in Paragraph 1) and which will be derived
            from the weighing of the Aircraft

      will not be less than [...***...]

      The Manufacturer's Weight Empty is subject to adjustment as defined in
      Paragraph 9.2 below.

                                                                        LA 8A-13
***Confidential Treatment Requested
AWE/USA - A350
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

5     Noise

5.1   Exterior Noise

5.1.1 Noise Certification

      The A350-800 powered by GENX-1A72 engines at a MTOW of 245,000 KG and a
      MLW of 182,000 KG will meet the noise levels limits as defined in ICAO
      Annex 16, Volume I, 'A350-800 Aircraft Noise', CHAPTER 4, third edition,
      effective 11th November 1993, [...***...].

      Noise data will be obtained and evaluated in accordance with the
      requirements of ICAO Annex 16, Volume I, 'Aircraft Noise', Amendment 7,
      Chapter 4, third edition, applicable 21st March 2002, and relevant
      appendices.

5.1.2 APU Noise

      The APU of the A350-800 will comply with the noise limits as defined in
      ICAO Annex 16, Vol. 1, Chapter 9, Attachment C, third edition, effective
      11th November 1993.

5.2   Interior Noise

5.2.1 Interior Noise in Flight

5.2.1.1 Cockpit Noise

      At a pressure altitude of 35000 feet and a true Mach number of 0.82 in
      straight and level flight in still air under ISA conditions, the
      guaranteed A-weighted Sound Pressure Level (SPL) and the Speech
      Interference Level (SIL) will not exceed the following values:

<TABLE>
<CAPTION>
                                      Guarantee
<S>                                   <C>
SPL dB(A)                                [...***...]
SIL dB                                   [...***...]
</TABLE>

      Noise levels will be measured at the Captain's and First Officer's seat
      position at head level with normal cockpit air conditioning and
      ventilation in operation.

5.2.1.2 Cabin Noise

      At a pressure altitude of 35000 feet and a true Mach number of 0.82 in
      straight and level flight in still air under ISA conditions, the
      guaranteed A-weighted Sound Pressure Level (SPL) and the Speech
      Interference Level (SIL) will not exceed the following values, considering
      leather seats are part of the cabin lay-out.

***CONFIDENTIAL TREATMENT REQUESTED                                     LA 8A-14

AWE/USA - A350
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

<TABLE>
<CAPTION>
                                        Guarantee
               (a [...***...] extra is accounted for leather seats installation)
<S>             <C>
SPL dB(A)                                  [...***...]
SIL dB                                     [...***...]
</TABLE>

      Noise levels will be measured at a height of 40 inches above the passenger
      compartment floor on the aisle center lines in the passenger seated area.
      Effects on noise of Buyer Furnished Equipment and installations by or on
      behalf of the Buyers are not covered by this guarantee. The noise levels
      are provided for leather seats.

6     Emissions

      The GENX-1A72 engines will meet the emission levels for Smoke as defined
      in ICAO Annex 16, Volume II `A350-800 Aircraft Engine Emissions', Second
      Edition effective 11th November 1993, section 2.2.2.

      The GENX-1A72 engines will meet the emission levels for Unburned
      Hydrocarbons (HC), Carbon Monoxide (CO) as defined in ICAO Annex 16,
      Volume II `A350-800 Aircraft Engine Emissions', Second Edition effective
      11th November 1993, section 2.3.2.

      The GENX-1A72 engines will meet the emission levels for Oxides of Nitrogen
      (NOx) as specified in the proposed ICAO Annex 16, Volume II `A350-800
      Aircraft Engine Emissions', Second Edition effective 11th November 1993,
      Chapter 2.3.2D (CAEP/6).

      Engine emission data will be obtained and evaluated in accordance with the
      requirements of the ICAO Annex 16, Volume II `A350-800 Aircraft Engine
      Emissions', Second Edition effective 11th November 1993.

7     GUARANTEE CONDITIONS

7.1   The performance and noise certification requirements for the Aircraft,
      except where otherwise noted, will be as stated in Section 02 of the
      Specification.

7.2   For the determination of FAR take-off and landing performance a hard dry
      level runway surface with no runway strength limitations, no line-up
      allowances, no obstacles, zero wind, atmosphere according to ISA, except
      as otherwise noted, and the use of centre of gravity positions, speed
      brakes, flaps, landing gear and engines in the conditions liable to
      provide the best results will be assumed.

***CONFIDENTIAL TREATMENT REQUESTED                                    LA 8A-15

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7.2.1 When establishing take-off and second segment performance no air will be
      bled from the engines for cabin air conditioning or anti-icing.

7.3   The en-route one engine inoperative climb performance will be established
      with the amount of engine air bleed associated with the maximum cabin
      altitude as specified in Section 21 of the Specification and an average
      ventilation rate not less than the amount defined in the Specification but
      no air will be bled from the engines for anti-icing.

7.4   Climb, cruise and descent performance associated with the Guarantees will
      include allowances for normal electrical load and for normal engine air
      bleed and power extraction associated with cabin differential pressure as
      defined in Section 21-30.31 of the Specification. Cabin air conditioning
      management during performance demonstration as described in Subparagraph
      8.3 below may be such as to optimise the Aircraft performance while
      meeting the normal air conditioning requirements defined above. Unless
      otherwise stated no air will be bled from the engines for anti-icing.

      Cruise performance at 20,000 ft and above is based on a centre of gravity
      position of 34% MAC.

7.5   The engines will be operated using not more than the engine manufacturer's
      maximum recommended outputs for take-off, maximum go-round, maximum
      continuous, maximum climb and cruise for normal operation unless otherwise
      stated.

7.6   Where applicable the Guarantees assume the use of an approved fuel having
      a density of 6.7 lb per US gallon and a lower heating value of 18,590 BTU
      per lb.

7.7   Speech Interference Level (SIL) is defined as the arithmetic average of
      the sound pressure levels in the 1000, 2000 and 4000 Hz octave bands.
      A-Weighted sound pressure level (dB(A)) is as defined in the American
      National Standard Specification ANSI.4-1971.

7.8   All guaranteed interior noise levels refer to an A350-800 Aircraft with
      standard acoustic insulation and an interior completely furnished. The
      effect of Buyer Furnished Equipment other than leather passenger seats
      (leather seats or acoustically equivalent) will be the responsibility of
      the Buyers (Remark: Standard seats tend to decrease interior noise levels
      by 1-2 dB)

7.9   For purposes of the sound levels guaranteed in Clause 5.2.1.2 of this
      Letter Agreement, the APU and air conditioning system will be operating.
      Sound level measurements may be made at the prevailing ambient temperature
      with the air conditioning packs controlled to approximate air conditioning
      machinery rotational speed appropriate to an ambient temperature of 25C.

                                                                        LA 8A-16
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8     GUARANTEE COMPLIANCE

8.1   Compliance with the Guarantees will be demonstrated using operating
      procedures and limitations in accordance with those defined by the
      certifying Airworthiness Authority and by the Seller unless otherwise
      stated.

8.2   Compliance with the take-off, second segment, en-route one engine
      inoperative, approach climb and landing elements of the Guarantees will be
      demonstrated with reference to the approved Flight Manual.

8.3   Compliance with those parts of the Guarantees defined in paragraph 2 and 3
      above not covered by the requirements of the certifying Airworthiness
      Authority will be demonstrated by calculation based on data obtained
      during flight tests conducted on one (or more, at the Seller's discretion)
      aircraft of the same aerodynamic configuration as the Aircraft and
      incorporated in the In-Flight Performance Program and data bases ("the
      IFP") appropriate to the Aircraft.

8.4   Compliance with the Structure Usable Load guarantee defined in Paragraph 4
      will be demonstrated with reference to a weight compliance report.

8.5   The approved A350-800 Aircraft flight manual will be used to demonstrate
      compliance with the guarantees of certification noise levels.

8.6   Compliance with the APU noise and interior noise guarantees will be
      demonstrated with reference to noise surveys conducted on one (or more, at
      the Seller's discretion) A350-800 Aircraft of an acoustically equivalent
      standard to those A350-800 Aircraft purchased by the Buyers.

8.7   Data derived from flight tests and noise surveys will be adjusted as
      required using conventional methods of correction, interpolation or
      extrapolation in accordance with established aeronautical practices to
      show compliance with the Guarantees.

8.8   Compliance with the emission guarantee will be demonstrated by reference
      to the ICAO Aircraft Engine Exhaust Emissions Databank entry for the
      GEnx-1A72 engine.

8.9   Compliance with the Guarantees is not contingent on engine performance
      defined in the engine manufacturer's specification.

8.10  The Seller undertakes to furnish the Buyers with a report or reports
      demonstrating compliance with the Guarantees at, or as soon as possible
      after, the delivery of each of the A350-800 Aircraft.

                                                                        LA 8A-17
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9     ADJUSTMENT OF GUARANTEES

9.1   In the event of any change to any law, governmental regulation or
      requirement or interpretation thereof ("rule change") by any governmental
      agency made subsequent to the date of the Agreement and such rule change
      affects the Aircraft configuration or performance or both required to
      obtain certification the Guarantees will be appropriately modified to
      reflect the effect of any such change.

9.2   The Guarantees apply to the Aircraft as described in paragraph 1 of this
      Letter Agreement and may be adjusted in the event of:

            i)    Any further configuration change which is the subject of an
                  SCN

            ii)   Variation in actual weights of items defined in Section 13-10
                  of the Specification

            iii)  Changes required to obtain certification that cause
                  modifications to the performance or weight of the A350-800
                  Aircraft

10    EXCLUSIVE GUARANTEES

      The Guarantees are exclusive and are provided in lieu of any and all other
      performance and weight guarantees of any nature which may be stated,
      referenced or incorporated in the Specification or any other document.

11    [...***...]

11.1  [...***...]

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      [...***...]

11.2  [...***...]

11.3  [...***...]

UNQUOTE

12    ASSIGNMENT

      In consideration of the assignment and subrogation by Seller under this
      Letter Agreement in favor of the Buyers in respect of Seller's rights
      against and obligations to the Manufacturer under the provisions quoted
      above, the Buyers hereby accept such assignment and subrogation and agrees
      to be bound by all of the terms, conditions and limitations therein
      contained. The Buyers and the Seller recognize and agree that, except as
      otherwise expressly provided in Clause 11 of this Letter Agreement, all
      the provisions of Clause 12 of the Agreement, including without limitation
      the Exclusivity of Warranties and General Limitations of Liability and
      Duplicate Remedies provisions therein contained, will apply to the
      foregoing performance guarantees.

      Except as set forth in Clause 20.2 of the Agreement, this Letter Agreement
      and the rights and obligations of the Buyers hereunder will not be
      assigned or transferred in any manner without

***Confidential Treatment Requested

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      prior written consent of AVSA and any attempted assignment or transfer in
      contravention of the provisions of this sentence will be void and of no
      force and effect.

      This Letter Agreement may be signed in any number of separate
      counterparts. Each counterpart, when signed and delivered (including
      counterparts delivered by facsimile transmission), will be an original,
      and the counterparts will together constitute one same instrument.

                                                                        LA 8A-20
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IN WITNESS WHEREOF, these presents were entered into as of the day and year
first above written.

                              Very truly yours,

                              AVSA, S.A.R.L.

                              By:   __________________________

                              Its:  __________________________

           Accepted and Agreed

           US Airways Group, Inc.

           By:   _________________________
           Its:

           AMERICA WEST AIRLINES, Inc.

           By:   _________________________
           Its:

           US Airways Group, Inc.

           By:   _________________________
           Its:
                                                                        LA 8A-21
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           *** CERTAIN CONFIDENTIAL INFORMATION HAS BEEN OMITTED AND
                FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
                    COMMISSION PURSUANT TO RULE 24b-2 OF THE
                   SECURITIES EXCHANGE ACT OF 1934, AS AMENDED

                             LETTER AGREEMENT NO. 8B

                                                        As of September 27, 2005

      US Airways Group, Inc.
      US Airways, Inc.
      America West Airlines, Inc.
      4000 East Sky Harbor Boulevard
      Phoenix, AZ 85034

      Re: A350-800 with GEnx - 1A75 Engines PERFORMANCE GUARANTEES

      Dear Ladies and Gentlemen:

      US Airways, Inc., America West Airlines, Inc. and US Airways Group, Inc.
      (the "Buyers"), and AVSA, S.A.R.L. (the "Seller"), have entered into an
      Airbus A350 Purchase Agreement dated as of even date herewith (the
      "Agreement"), which covers, among other things, the sale by the Seller and
      the purchase by the Buyers of certain A350-800 Aircraft, under the terms
      and conditions set forth in said Agreement. The Buyers and the Seller have
      agreed to set forth in this Letter Agreement No. 8B (the "Letter
      Agreement") certain additional terms and conditions regarding the sale of
      the A350-800 Aircraft. Capitalized terms used herein and not otherwise
      defined in this Letter Agreement will have the meanings assigned thereto
      in the Agreement. Technical and trade terms used but not defined herein or
      in the Agreement will be defined as generally accepted in the airline
      and/or aircraft manufacturing industries. The terms "herein," "hereof" and
      "hereunder" and words of similar import refer to this Letter Agreement.

      All of the parties agree that this Letter Agreement will constitute an
      integral, nonseverable part of said Agreement, that the provisions of said
      Agreement are hereby incorporated herein by reference, and that this
      Letter Agreement will be governed by the provisions of said Agreement,
      except that if the Agreement and this Letter Agreement have specific
      provisions which are inconsistent, the specific provisions contained in
      this Letter Agreement will govern.

                                                                       LA 8B - 1

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      The Seller represents and warrants that the Manufacturer has provided to
      the Seller the performance, noise and weight guarantees (the "Guarantees")
      that are reproduced below between the words QUOTE and UNQUOTE, subject to
      the terms, conditions, limitations and restrictions set forth below. The
      Seller hereby assigns to the Buyers, and the Buyers hereby accept, as to
      each A350-800 Aircraft delivered to the Buyers under the Agreement, all of
      the Seller's rights and obligations with respect to such A350-800 Aircraft
      in its capacity as "Buyers" as aforesaid under the said Guarantees, and
      the Seller subrogates the Buyers into all such rights and obligations in
      respect of the A350-800 Aircraft. The Seller hereby warrants to the Buyers
      that (i) it has all requisite authority to make the foregoing assignment
      to and to effect the foregoing subrogation in favor of the Buyers, (ii)
      such assignment and subrogation are effective to confer on the Buyers all
      of the foregoing rights and obligations of the Seller, (iii) the
      provisions so assigned are in full force and effect and have not been
      amended prior to the date hereof, and (iv) the Seller will not enter into
      any amendment of the provisions so assigned without the prior written
      consent of the Buyers.

QUOTE

1     AIRCRAFT CONFIGURATION

1.1   The Guarantees defined below are applicable to the A350-800 Aircraft
      powered by General Electric GEnx-1A75 engines, as described in the
      Standard Specification Ref. G.000.08000 Issue B dated 30th June 2005,
      without taking into account any further changes thereto as provided in the
      Agreement, herein after referred as "the Specification" without taking
      into account any further changes thereto as provided in the Agreement.

2     GUARANTEED PERFORMANCE

2.1   Take-off Field Length

      FAR take-off field length ("TOFL") at an Aircraft gross weight of 540,133
      lb (245,000 kg) at the start of Take-Off Distance Available (TODA) at Sea
      Level pressure altitude in ISA+15(degrees)C conditions will be not more
      than a guaranteed value of [...***...].

2.2   Second Segment Climb

      The Aircraft will meet FAR 25 regulations for one engine inoperative climb
      after take-off, undercarriage retracted, at a weight corresponding to the
      stated weight at the start of ground run, at the altitude and temperature,
      and in the configuration of flap angle and safety speed required to comply
      with the performance guaranteed in paragraph 2.1 and 2.3.

                                                                       LA 8B - 2
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2.3   Take-off Weight

2.3.1 When operated under the following conditions (representative of FRA 25R)

       Pressure altitude                                     : 364 ft
       Ambient temperature                                   : 24 degrees C
       Take-off run available                                : 13,123 ft
       Take-off distance available                           : 13,123 ft
       Accelerate-stop distance available                    : 13,123 ft
       Slope                                                 : -0.26% (downhill)
       Wind                                                  : Zero
       Line-up allowance TOD                                 : 80 ft
       Line-up allowance ASD                                 : 153 ft
       Obstacles (Height/Distance above/fromstart of TODA)   :-28ft/13,488ft
                                                              -23ft/13,980ft
                                                              -21ft/14,236ft
                                                               59ft/17,388ft
                                                               60ft/17,598ft
                                                               61ft/17,795ft
                                                               62ft/18,035ft
                                                               65ft/18,848ft
                                                               67ft/19,918ft
                                                               76ft/23,402ft

      the maximum permissible take-off weight at the start of Take-off Distance
      Available will be not less than a guaranteed value of 540,133 lb (Max
      Structural)

2.3.2 When operated under the following conditions (representative of PHL 27L)

       Pressure altitude                                       : 10 ft
       Ambient temperature                                     : 30(degrees)C
       Take-off run available                                  : 10,506 ft
       Take-off distance available                             : 10,506 ft
       Accelerate-stop distance available                      : 10,506 ft
       Slope                                                   : 0.11% (uphill)
       Wind                                                    : Zero
       Line-up allowance TOD                                   : 80 ft
       Line-up allowance ASD                                   : 153 ft
       Obstacles (Height/Distance above/from start of TODA):     33ft/11,312ft
                                                                 38ft/12,036ft

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      the maximum permissible take-off weight at the start of Take-off Distance
      Available will be not less than a guaranteed value of [...***...].

2.3.3 When operated under the following conditions (representative of PHX 26)

       Pressure altitude                                     : 1,135 ft
       Take-off run available                                : 11,490 ft
       Take-off distance available                           : 11,490 ft
       Accelerate-stop distance available                    : 11,490 ft
       Slope                                                 : -0.21% (downhill)
       Wind                                                  : Zero
       Line-up allowance TOD                                 : 80 ft
       Line-up allowance ASD                                 : 153 ft
       Obstacles (Height/Distance above/from start of TODA)  : -13ft/12,506ft
                                                               -5ft/12,852ft
                                                                36ft/13,792ft
                                                                42ft/14,510ft
                                                               195ft/22,434ft

      the maximum permissible take-off weight at the start of Take-off Distance
      Available will be not less than a guaranteed value of

Ambient temperature of 41(degrees)C:     [...***...]

Ambient temperature of 46(degrees)C:     [...***...]

2.3.4 When operated under the following conditions (representative of TLV 26)

       Pressure altitude                                     : 135 ft
       Ambient temperature                                   : 32 degrees C
       Take-off run available                                : 11,998 ft
       Take-off distance available                           : 12,392 ft
       Accelerate-stop distance available                    : 12,293 ft
       Slope                                                 : -0.32% (downhill)
       Wind                                                  : Zero
       Line-up allowance TOD                                 : 80 ft
       Line-up allowance ASD                                 : 153 ft
       Obstacles (Height/Distance above/from start of TODA)  : none

      the maximum permissible take-off weight at the start of Take-off Distance
      Available will be not less than a guaranteed value of [...***...].

***Confidential Treatment Requested

                                                                       LA 8B - 4

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2.3.5 When operated under the following conditions (representative of NRT 34L)

       Pressure altitude                                     : 139 ft
       Ambient temperature                                   : 29 degrees C
       Take-off run available                                : 13,123 ft
       Take-off distance available                           : 13,123 ft
       Accelerate-stop distance available                    : 13,123 ft
       Slope                                                 : -0.07% (downhill)
       Wind                                                  : Zero
       Line-up allowance TOD                                 : 80 ft
       Line-up allowance ASD                                 : 153 ft
       Obstacles (Height/Distance above/from start of TODA)  : -2ft/13,905ft
                                                               4ft/14,541ft
                                                               8ft/14,780ft
                                                               25ft/15,892ft
                                                               28ft/16,030ft
                                                               29ft/16,269ft
                                                               30ft/16,303ft
                                                               32ft/16,967ft
                                                               53ft/18,187ft
                                                               57ft/19,378ft
                                                               65ft/20,659ft

      the maximum permissible take-off weight at the start of Take-off Distance
      Available will be not less than a guaranteed value of [...***...]

2.4   Landing Field Length

      FAR certified dry landing field length ("LFL") at an Aircraft gross weight
      of 401,241 lb (182,000 kg) at Sea Level pressure altitude will not be more
      than a guaranteed value of [...***...].

2.5   En-route One Engine Inoperative

      The A350-800 Aircraft will meet the FAR regulations minimum en-route climb
      one engine inoperative and the other operating at the maximum continuous
      thrust with anti-icing off at an A350-800Aircraft gross weight of 500,000
      lb in the cruise configuration in ISA+10C conditions at a guaranteed
      pressure altitude of not less than [...***...]

***Confidential Treatment Requested

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2.6   Approach Climb

2.6.1 The A350-800 Aircraft will meet FAR regulations approach climb gradient
      one engine inoperative and the other operating at the maximum go-round
      thrust with air conditioning on and anti-icing off at sea level pressure
      altitude at an A350-800 Aircraft gross weight of 401,241 lb at a
      temperature of not less than the guarantee value of [...***...].

2.6.2 The A350-800 Aircraft will meet FAR regulations approach climb gradient
      one engine inoperative and the other operating at the maximum go-round
      thrust with air conditioning on and anti-icing off at a pressure altitude
      of 5,000 feet at an A350-800 Aircraft gross weight of 401,241 lb at a
      temperature of not less than the guarantee value of [...***...] and a
      nominal value of [...***...].

2.7   Specific Range

      The nautical miles per pound of fuel at an A350-800 Aircraft gross weight
      of 500,000 lb at a pressure altitude of 33,000 ft in ISA+10C conditions at
      a true Mach number of 0.82 will not be less than a guaranteed value of
      [...***...].

      The nautical miles per pound of fuel at an A350-800 Aircraft gross weight
      of 490,000 lb at a pressure altitude of 35,000 ft in ISA+10C conditions at
      a true Mach number of 0.82 will not be less than a guaranteed value of
      [...***...].

      The nautical miles per pound of fuel at an A350-800 Aircraft gross weight
      of 480,000 lb at a pressure altitude of 33,000 ft in ISA+10C conditions at
      a true Mach number of 0.84 will not be less than a guaranteed value of
      [...***...].

      The nautical miles per pound of fuel at an A350-800 Aircraft gross weight
      of 470,000 lb at a pressure altitude of 35,000 ft in ISA+10C conditions at
      a true Mach number of 0.84 will not be less than a guaranteed value of
      [...***...].

2.8   Initial Cruise Altitude

      At an A350-800 gross weight of 527,000 lb (representing the estimated
      weight at start of cruise following a take-off at sea level at Maximum
      Take-off Weight) in ISA+10C conditions the pressure altitude for:

            1.    Level flight at a true Mach number of 0.82 using a thrust not
                  exceeding maximum cruise thrust

            2.    A rate of climb of not less than then 300 ft/min at a true
                  Mach number of 0.82 using a

***Confidential Treatment Requested

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                  thrust not exceeding maximum climb thrust

            3.    A buffet maneuver margin of not less than 0.3g at a true Mach
                  number of 0.82 will be not less than [...***...].

2.9   Speed

      Level flight speed at an A350-800 Aircraft gross weight of 527,000 lb at a
      pressure altitude of 35,000 ft in ISA+10C conditions using a thrust not
      exceeding maximum cruise thrust will be not less than a guaranteed true
      Mach number of [...***...].

3     MISSION GUARANTEES

3.1   Mission Usable Load: TLV - PHL

      The A350-800 Aircraft will be capable of carrying a guaranteed Usable Load
      (as defined in Paragraph 3.11 below) of not less than [...***...] over a
      still air stage distance of 5,849 nautical miles (representative of TLV to
      PHL mission with a 58 knots headwind) when operated under the conditions
      defined below:

3.1.1 The departure airport conditions are such to allow the required Takeoff
      Weight to be used without any restriction. Pressure altitude is 135 ft.

      The destination airport conditions are such to allow the required Landing
      Weight to be used without any restriction. Pressure altitude is 10 ft.

3.1.2 An allowance of 570 lb of fuel and 9 minutes is considered for engine
      start-up and taxi-out.

3.1.3 An allowance of 1,840 lb of fuel and 3 minutes is included for take-off
      and climb to 1,635 ft pressure altitude with acceleration to climb speed
      at a temperature of 29 degrees C. No credit is taken for the distance
      covered in these segments.

3.1.4 Climb from 1,635 ft pressure altitude up to cruise altitude using maximum
      climb thrust, cruise at a fixed Mach number of M=0.82 at pressure
      altitudes of 31,000 ft, 35,000 ft and 39,000 ft and descent to 1,510 ft
      pressure altitude are conducted in ISA+10 degrees C conditions.

      Climb and descent speeds below 10,000 ft will be 250 knots CAS. A wind
      component of 70% of cruise wind has been considered during climb and
      descent.

3.1.5 An allowance of 430 lb of fuel and 4 minutes is considered for approach
      and landing at the destination airport. No credit is taken for the
      distance covered in these segments.

***Confidential Treatment Requested

                                                                       LA 8B - 7

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3.1.6 Trip fuel is defined as the fuel used during engine start-up and taxi-out,
      take-off, climb, cruise, descent, approach and landing as defined in
      paragraphs 3.1.2 to 3.1.5 above.

      Stage distance is defined as the distance covered during climb, cruise and
      descent as described in paragraph 3.1.4 above.

3.1.7 At the end of approach and landing 14,800 lb of usable fuel will remain in
      the tanks.

      This represents the estimated fuel required for:

      1)    En-route reserves: 4% of trip time representing use of re-dispatch
            procedures

      2)    Missed approach at destination

      3)    Diversion in ISA+10 degrees C conditions over a still air distance
            of 150 nautical miles starting and ending at 1,500 ft pressure
             altitude and using long range procedures

      4)    Holding for 30 minutes at 1,500 ft pressure altitude in
            ISA+10 degrees C conditions

      5)    An allowance of fuel for approach and landing at alternate airport

3.2   Mission fuel burn: TLV - PHL

      In carrying a fixed Usable Load of 136,780 lb over a still air stage
      distance of 5,849 nautical miles (representative of TLV to PHL mission
      with a 58 knots headwind) the trip fuel burnt when operated under the
      conditions defined in paragraphs 3.1.1 to 3.1.7 inclusive above will be
      not more than a guaranteed value of [...***...] and the block time will
      not be more than a guaranteed value of [...***...].

      Block time is defined as the time for engine start-up and taxi-out,
      take-off, climb, cruise, descent, approach and landing as defined in
      paragraphs 3.1.2 to 3.1.5 above.

3.3   Mission Usable Load: FRA - PHX

      The A350-800 Aircraft will be capable of carrying a guaranteed Usable Load
      of not less than [...***...] over a still air stage distance of 5,482
      nautical miles (representative of FRA to PHX mission with a 40 knots
      headwind) when operated under the conditions defined below:

3.3.1 The departure airport conditions are such to allow the required Takeoff
      Weight to be used without any restriction. Pressure altitude is 364 ft.

      The destination airport conditions are such to allow the required Landing
      Weight to be used without any restriction. Pressure altitude is 1,135 ft.

3.3.2 An allowance of 570 lb of fuel and 9 minutes is considered for engine
      start-up and taxi-out.

***Confidential Treatment Requested

                                                                       LA 8B - 8

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3.3.3 An allowance of 1,750 lb of fuel and 3 minutes is included for take-off
      and climb to 1,864 ft pressure altitude with acceleration to climb speed
      at a temperature of 21 degrees C. No credit is taken for the distance
      covered in these segments.

3.3.4 Climb from 1,864 ft pressure altitude up to cruise altitude using maximum
      climb thrust, cruise at a fixed Mach number of M=0.82 at pressure
      altitudes of 31,000 ft, 35,000 ft and 39,000 ft and descent to 2,635 ft
      pressure altitude are conducted in ISA+10 degrees C conditions.

      Climb and descent speeds below 10,000 ft will be 250 knots CAS. A wind
      component of 70% of cruise wind has been considered during climb and
      descent.

3.3.5 An allowance of 440 lb of fuel and 4 minutes is considered for approach
      and landing at the destination airport. No credit is taken for the
      distance covered in these segments.

3.3.6 Trip fuel is defined as the fuel used during engine start-up and taxi-out,
      take-off, climb, cruise, descent, approach and landing and manoeuvre as
      defined in paragraphs 3.3.2 to 3.3.5 above.

      Stage distance is defined as the distance covered during climb, cruise and
      descent as described in paragraph 3.3.4 above.

3.3.7 At the end of approach and landing 14,600 lb of usable fuel will remain in
      the tanks.

      This represents the estimated fuel required for:

      1)    En-route reserves: 4% of trip time representing use of re-dispatch
            procedures

      2)    Missed approach at destination

      3)    Diversion in ISA+10 degrees C conditions over a still air distance
            of 150 nautical miles starting and ending at 1,500 ft pressure
            altitude and using long range procedures

      4)    Holding for 30 minutes at 1,500 ft pressure altitude in
            ISA+10 degrees C conditions

      5)    An allowance of fuel for approach and landing at alternate airport

3.4   Mission fuel burn: FRA - PHX

      In carrying a fixed Usable Load of 140,630 lb over a still air stage
      distance of 5,482 nautical miles (representative of FRA to PHX mission
      with a 40 knots headwind) the trip fuel burnt when operated under the
      conditions defined in paragraphs 3.3.1 to 3.3.7 inclusive above will be
      not more than a guaranteed value of [...***...] and the block time will
      not be more than a guaranteed value of [...***...]. Block time is defined
      as the time for engine start-up and taxi-out, take-off, climb, cruise,
      descent, approach and landing as defined in paragraphs 3.3.2 to 3.3.5
      above.

                                                                       LA 8B - 9

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3.5   Mission Usable Load: PHX - FRA (41 degrees C at PHX)

      The A350-800 Aircraft will be capable of carrying a guaranteed Usable Load
      of not less than [...***...] over a still air stage distance of 4,980
      nautical miles (representative of PHX to FRA mission with a 5 knots
      tailwind) when operated under the conditions defined below:

3.5.1 The departure airport conditions (representative of PHX runway 26) are as
      defined in paragraph 2.3.3 above (ambient temperature of 41 degrees C).

      The destination airport conditions are such to allow the required Landing
      Weight to be used without any restriction. Pressure altitude is 364 ft.

3.5.2 An allowance of 570 lb of fuel and 9 minutes is considered for engine
      start-up and taxi-out.

3.5.3 An allowance of 1,800 lb of fuel and 3 minutes is included for take-off
      and climb to 2,635 ft pressure altitude with acceleration to climb speed
      at a temperature of 38 degrees C. No credit is taken for the distance
      covered in these segments.

3.5.4 Climb from 2,635 ft pressure altitude up to cruise altitude using maximum
      climb thrust, cruise at a fixed Mach number of M=0.82 at pressure
      altitudes of 33,000 ft, 37,000 ft and 41,000 ft and descent to 1,864 ft
      pressure altitude are conducted in ISA+10 degrees C conditions.

      Climb and descent speeds below 10,000 ft will be 250 knots CAS. A wind
      component of 70% of cruise wind has been considered during climb and
      descent.

3.5.5 An allowance of 415 lb of fuel and 4 minutes is considered for approach
      and landing at the destination airport. No credit is taken for the
      distance covered in these segments.

3.5.6 Trip fuel is defined as the fuel used during engine start-up and taxi-out,
      take-off, climb, cruise, descent, approach and landing and manoeuvre as
      defined in paragraphs 3.5.2 to 3.5.5 above.

      Stage distance is defined as the distance covered during climb, cruise and
      descent as described in paragraph 3.5.4 above.

3.5.7 At the end of approach and landing 13,650 lb of usable fuel will remain in
      the tanks.

      This represents the estimated fuel required for:

      1)    En-route reserves: 4% of trip time representing use of re-dispatch
            procedures

      2)    Missed approach at destination

      3)    Diversion in ISA+10 degrees C conditions over a still air distance
            of 150 nautical miles starting and ending at 1,500 ft pressure
            altitude and using long range procedures

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      4)    Holding for 30 minutes at 1,500 ft pressure altitude in
            ISA+10 degrees C conditions

      5)    An allowance of fuel for approach and landing at alternate airport

3.6   Mission fuel burn: PHX - FRA (41 degrees C at PHX)

      In carrying a fixed Usable Load of 123,470 lb over a still air stage
      distance of 4,980 nautical miles (representative of PHX to FRA mission
      with a 5 knots tailwind) the trip fuel burnt when operated under the
      conditions defined in paragraphs 3.5.1 to 3.5.7 inclusive above will be
      not more than a guaranteed value of [...***...] and the block time will
      not be more than a guaranteed value of [...***...]. Block time is defined
      as the time for engine start-up and taxi-out, take-off, climb, cruise,
      descent, approach and landing as defined in paragraphs 3.5.2 to 3.5.5
      above.

3.7   Mission Usable Load: PHL - NRT

      The A350-800 Aircraft will be capable of carrying a guaranteed Usable Load
      of not less than [...***...] over a still air stage distance of 6,542
      nautical miles (representative of PHL to NRT mission with a 38 knots
      headwind) when operated under the conditions defined below:

3.7.1 The departure airport conditions (representative of PHL runway 27L) are as
      defined in paragraph 2.3.2 above.

      The destination airport conditions are such to allow the required Landing
      Weight to be used without any restriction. Pressure altitude is 139 ft.

3.7.2 An allowance of 570 lb of fuel and 9 minutes is considered for engine
      start-up and taxi-out.

3.7.3 An allowance of 1,810 lb of fuel and 3 minutes is included for take-off
      and climb to 1,510 ft pressure altitude with acceleration to climb speed
      at a temperature of 27 degrees C. No credit is taken for the distance
      covered in these segments.

3.7.4 Climb from 1,510 ft pressure altitude up to cruise altitude using maximum
      climb thrust, cruise at a fixed Mach number of M=0.82 at pressure
      altitudes of 31,000 ft, 35,000 ft and 39,000 ft and descent to 1,639 ft
      pressure altitude are conducted in ISA+10 degrees C conditions.

      Climb and descent speeds below 10,000 ft will be 250 knots CAS. A wind
      component of 70% of cruise wind has been considered during climb and
      descent.

3.7.5 An allowance of 420 lb of fuel and 4 minutes is considered for approach
      and landing at the destination airport. No credit is taken for the
      distance covered in these segments.

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3.7.6 Trip fuel is defined as the fuel used during engine start-up and taxi-out,
      take-off, climb, cruise, descent, approach and landing and manoeuvre as
      defined in paragraphs 3.7.2 to 3.7.5 above. Stage distance is defined as
      the distance covered during climb, cruise and descent as described in
      paragraph 3.7.4 above.

3.7.7 At the end of approach and landing 14,850 lb of usable fuel will remain in
      the tanks.

      This represents the estimated fuel required for:

      1)    En-route reserves: 4% of trip time representing use of re-dispatch
            procedures

      2)    Missed approach at destination

      3)    Diversion in ISA+10 degrees C conditions over a still air distance
            of 150 nautical miles starting and ending at 1,500 ft pressure
            altitude and using long range procedures

      4)    Holding for 30 minutes at 1,500 ft pressure altitude in
            ISA+10 degrees C conditions

      5)    An allowance of fuel for approach and landing at alternate airport

3.8   Mission fuel burn: PHL - NRT

      In carrying a fixed Usable Load of 121,920 lb over a still air stage
      distance of 6,542 nautical miles (representative of PHL to NRT mission
      with a 38 knots headwind) the trip fuel burnt when operated under the
      conditions defined in paragraphs 3.7.1 to 3.7.7 inclusive above will be
      not more than a guaranteed value of [...***...] and the block time will
      not be more than a guaranteed value of [...***...]. Block time is defined
      as the time for engine start-up and taxi-out, take-off, climb, cruise,
      descent, approach and landing as defined in paragraphs 3.7.2 to 3.7.5
      above.

3.9   Mission Usable Load: PHX - NRT (41 degrees C at PHX)

      The A350-800 Aircraft will be capable of carrying a guaranteed Usable Load
      of not less than [...***...] over a still air stage distance of 5,971
      nautical miles (representative of PHX to NRT mission with a 67 knots
      headwind) when operated under the conditions defined below:

3.9.1 The departure airport conditions (representative of PHX runway 26) are as
      defined in paragraph 2.3.3 above (ambient temperature of 41 degrees C).

      The destination airport conditions are such to allow the required Landing
      Weight to be used without any restriction. Pressure altitude is 139 ft.

3.9.2 An allowance of 570 lb of fuel and 9 minutes is considered for engine
      start-up and taxi-out.

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3.9.3 An allowance of 1,790 lb of fuel and 3 minutes is included for take-off
      and climb to 2,635 ft pressure altitude with acceleration to climb speed
      at a temperature of 38 degrees C. No credit is taken for the distance
      covered in these segments.

3.9.4 Climb from 2,635 ft pressure altitude up to cruise altitude using maximum
      climb thrust, cruise at a fixed Mach number of M=0.82 at pressure
      altitudes of 35,000 ft and 39,000 ft and descent to 1,639 ft pressure
      altitude are conducted in ISA+10 degrees C conditions.

      Climb and descent speeds below 10,000 ft will be 250 knots CAS. A wind
      component of 70% of cruise wind has been considered during climb and
      descent.

3.9.5 An allowance of 420 lb of fuel and 4 minutes is considered for approach
      and landing at the destination airport. No credit is taken for the
      distance covered in these segments.

3.9.6 Trip fuel is defined as the fuel used during engine start-up and taxi-out,
      take-off, climb, cruise, descent, approach and landing and manoeuvre as
      defined in paragraphs 3.9.2 to 3.9.5 above. Stage distance is defined as
      the distance covered during climb, cruise and descent as described in
      paragraph 3.9.4 above.

3.9.7 At the end of approach and landing 13,740 lb of usable fuel will remain in
      the tanks.

      This represents the estimated fuel required for:

      1)    En-route reserves: 4% of trip time representing use of re-dispatch
            procedures

      2)    Missed approach at destination

      3)    Diversion in ISA+10 degrees C conditions over a still air distance
            of 150 nautical miles starting and ending at 1,500 ft pressure
            altitude and using long range procedures

      4)    Holding for 30 minutes at 1,500 ft pressure altitude in
            ISA+10 degrees C conditions

      5)    An allowance of fuel for approach and landing at alternate airport

3.10  Mission fuel burn: PHX - NRT (41 degrees C at PHX)

      In carrying a fixed Usable Load of 103,440 lb over a still air stage
      distance of 5,971 nautical miles (representative of PHX to NRT mission
      with a 67 knots headwind) the trip fuel burnt when operated under the
      conditions defined in paragraphs 3.9.1 to 3.9.7 inclusive above will be
      not more than a guaranteed value of [...***...] and the block time will
      not be more than a guaranteed value of [...***...].

      Block time is defined as the time for engine start-up and taxi-out,
      take-off, climb, cruise, descent, approach and landing as defined in
      paragraphs 3.9.2 to 3.9.5 above.

3.11  For the mission usable load guarantees defined in Paragraphs 3.1, 3.3,
      3.5, 3.7 and 3.9 above the guaranteed usable loads are calculated as Zero
      Fuel Weight minus the Manufacturer's

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      Weight Empty as defined in the Specification which will be derived from
      the weighing of the Aircraft.

4     Structural Usable Load

      The Seller guarantees that the difference between:

      -     the Maximum Zero Fuel Weight (MZFW) of the Aircraft (as defined in
            the A350-800 Standard Specification set forth in Paragraph 1)

            and

      -     the Manufacturer's Weight Empty (as defined in the A350-800 Standard
            Specification set forth in Paragraph 1) and which will be derived
            from the weighing of the Aircraft

      will not be less than [...***...]

      The Manufacturer's Weight Empty is subject to adjustment as defined in
      Paragraph 9.2 below.

5     Noise

5.1   Exterior Noise

5.1.1 Noise Certification

      The A350-800 powered by GENX-1A75 engines at a MTOW of 245,000 KG and a
      MLW of 182,000 KG will meet the noise levels limits as defined in ICAO
      Annex 16, Volume I, 'A350-800 Aircraft Noise', CHAPTER 4, third edition,
      effective 11th November 1993, [...***...].

      Noise data will be obtained and evaluated in accordance with the
      requirements of ICAO Annex 16, Volume I, 'Aircraft Noise', Amendment 7,
      Chapter 4, third edition, applicable 21st March 2002, and relevant
      appendices.

5.1.2 APU Noise

      The APU of the A350-800 will comply with the noise limits as defined in
      ICAO Annex 16, Vol. 1, Chapter 9, Attachment C, third edition, effective
      11th November 1993.

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5.2   Interior Noise

5.2.1 Interior Noise in Flight

5.2.1.1 Cockpit Noise

      At a pressure altitude of 35000 feet and a true Mach number of 0.82 in
      straight and level flight in still air under ISA conditions, the
      guaranteed A-weighted Sound Pressure Level (SPL) and the Speech
      Interference Level (SIL) will not exceed the following values:

<TABLE>
<CAPTION>
                                Guarantee
                                ----------
<S>                             <C>
SPL dB(A)                       [...***...]
SIL dB                          [...***...]
</TABLE>

      Noise levels will be measured at the Captain's and First Officer's seat
      position at head level with normal cockpit air conditioning and
      ventilation in operation.

5.2.1.2 Cabin Noise

      At a pressure altitude of 35000 feet and a true Mach number of 0.82 in
      straight and level flight in still air under ISA conditions, the
      guaranteed A-weighted Sound Pressure Level (SPL) and the Speech
      Interference Level (SIL) will not exceed the following values, considering
      leather seats are part of the cabin lay-out.

<TABLE>
<CAPTION>
                                                  Guarantee
                      (a [...***...] extra is accounted for leather seats installation)
                      -----------------------------------------------------------------
<S>                   <C>
SPL dB(A)                                         [...***...]
IL dB                                             [...***...]
</TABLE>

      Noise levels will be measured at a height of 40 inches above the passenger
      compartment floor on the aisle center lines in the passenger seated area.
      Effects on noise of Buyer Furnished Equipment and installations by or on
      behalf of the Buyers are not covered by this guarantee. The noise levels
      are provided for leather seats.

6     Emissions

      The GENX-1A75 engines will meet the emission levels for Smoke as defined
      in ICAO Annex 16, Volume II `A350-800 Aircraft Engine Emissions', Second
      Edition effective 11th November 1993, section 2.2.2.

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      The GENX-1A75 engines will meet the emission levels for Unburned
      Hydrocarbons (HC), Carbon Monoxide (CO) as defined in ICAO Annex 16,
      Volume II `A350-800 Aircraft Engine Emissions', Second Edition effective
      11th November 1993, section 2.3.2.

      The GENX-1A75 engines will meet the emission levels for Oxides of Nitrogen
      (NOx) as specified in the proposed ICAO Annex 16, Volume II `A350-800
      Aircraft Engine Emissions', Second Edition effective 11th November 1993,
      Chapter 2.3.2D (CAEP/6).

      Engine emission data will be obtained and evaluated in accordance with the
      requirements of the ICAO Annex 16, Volume II `A350-800 Aircraft Engine
      Emissions', Second Edition effective 11th November 1993.

7     GUARANTEE CONDITIONS

7.1   The performance and noise certification requirements for the Aircraft,
      except where otherwise noted, will be as stated in Section 02 of the
      Specification.

7.2   For the determination of FAR take-off and landing performance a hard dry
      level runway surface with no runway strength limitations, no line-up
      allowances, no obstacles, zero wind, atmosphere according to ISA, except
      as otherwise noted, and the use of centre of gravity positions, speed
      brakes, flaps, landing gear and engines in the conditions liable to
      provide the best results will be assumed.

7.2.1 When establishing take-off and second segment performance no air will be
      bled from the engines for cabin air conditioning or anti-icing.

7.3   The en-route one engine inoperative climb performance will be established
      with the amount of engine air bleed associated with the maximum cabin
      altitude as specified in Section 21 of the Specification and an average
      ventilation rate not less than the amount defined in the Specification but
      no air will be bled from the engines for anti-icing.

7.4   Climb, cruise and descent performance associated with the Guarantees will
      include allowances for normal electrical load and for normal engine air
      bleed and power extraction associated with cabin differential pressure as
      defined in Section 21-30.31 of the Specification. Cabin air conditioning
      management during performance demonstration as described in Subparagraph
      8.3 below may be such as to optimise the Aircraft performance while
      meeting the normal air conditioning requirements defined above. Unless
      otherwise stated no air will be bled from the engines for anti-icing.

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      Cruise performance at 20,000 ft and above is based on a centre of gravity
      position of 34% MAC.

7.5   The engines will be operated using not more than the engine manufacturer's
      maximum recommended outputs for take-off, maximum go-round, maximum
      continuous, maximum climb and cruise for normal operation unless otherwise
      stated.

7.6   Where applicable the Guarantees assume the use of an approved fuel having
      a density of 6.7 lb per US gallon and a lower heating value of 18,590 BTU
      per lb.

7.7   Speech Interference Level (SIL) is defined as the arithmetic average of
      the sound pressure levels in the 1000, 2000 and 4000 Hz octave bands.
      A-Weighted sound pressure level (dB(A)) is as defined in the American
      National Standard Specification ANSI.4-1971.

7.8   All guaranteed interior noise levels refer to an A350-800 Aircraft with
      standard acoustic insulation and an interior completely furnished. The
      effect of Buyer Furnished Equipment other than leather passenger seats
      (leather seats or acoustically equivalent) will be the responsibility of
      the Buyers (Remark: Standard seats tend to decrease interior noise levels
      by 1-2 dB)

7.9   For purposes of the sound levels guaranteed in Clause 5.2.1.2 of this
      Letter Agreement, the APU and air conditioning system will be operating.
      Sound level measurements may be made at the prevailing ambient temperature
      with the air conditioning packs controlled to approximate air conditioning
      machinery rotational speed appropriate to an ambient temperature of 25C.

8     GUARANTEE COMPLIANCE

8.1   Compliance with the Guarantees will be demonstrated using operating
      procedures and limitations in accordance with those defined by the
      certifying Airworthiness Authority and by the Seller unless otherwise
      stated.

8.2   Compliance with the take-off, second segment, en-route one engine
      inoperative, approach climb and landing elements of the Guarantees will be
      demonstrated with reference to the approved Flight Manual.

8.3   Compliance with those parts of the Guarantees defined in paragraph 2 and 3
      above not covered by the requirements of the certifying Airworthiness
      Authority will be demonstrated by calculation based on data obtained
      during flight tests conducted on one (or more, at the Seller's discretion)
      aircraft of the same aerodynamic configuration as the Aircraft and
      incorporated in the In-Flight Performance Program and data bases ("the
      IFP") appropriate to the Aircraft.

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8.4   Compliance with the Structure Usable Load guarantee defined in Paragraph 4
      will be demonstrated with reference to a weight compliance report.

8.5   The approved A350-800 Aircraft flight manual will be used to demonstrate
      compliance with the guarantees of certification noise levels.

8.6   Compliance with the APU noise and interior noise guarantees will be
      demonstrated with reference to noise surveys conducted on one (or more, at
      the Seller's discretion) A350-800 Aircraft of an acoustically equivalent
      standard to those A350-800 Aircraft purchased by the Buyers.

8.7   Data derived from flight tests and noise surveys will be adjusted as
      required using conventional methods of correction, interpolation or
      extrapolation in accordance with established aeronautical practices to
      show compliance with the Guarantees.

8.8   Compliance with the emission guarantee will be demonstrated by reference
      to the ICAO Aircraft Engine Exhaust Emissions Databank entry for the
      GEnx-1A75 engine.

8.9   Compliance with the Guarantees is not contingent on engine performance
      defined in the engine manufacturer's specification.

8.10  The Seller undertakes to furnish the Buyers with a report or reports
      demonstrating compliance with the Guarantees at, or as soon as possible
      after, the delivery of each of the A350-800 Aircraft.

9     ADJUSTMENT OF GUARANTEES

9.1   In the event of any change to any law, governmental regulation or
      requirement or interpretation thereof ("rule change") by any governmental
      agency made subsequent to the date of the Agreement and such rule change
      affects the Aircraft configuration or performance or both required to
      obtain certification the Guarantees will be appropriately modified to
      reflect the effect of any such change.

9.2   The Guarantees apply to the Aircraft as described in paragraph 1 of this
      Letter Agreement and may be adjusted in the event of:

            i)    Any further configuration change which is the subject of an
                  SCN

            ii)   Variation in actual weights of items defined in Section 13-10
                  of the Specification

            iii)  Changes required to obtain certification that cause
                  modifications to the performance or weight of the A350-800
                  Aircraft

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10    EXCLUSIVE GUARANTEES

      The Guarantees are exclusive and are provided in lieu of any and all other
      performance and weight guarantees of any nature which may be stated,
      referenced or incorporated in the Specification or any other document.

11    [...***...]

11.1  [...***...]

11.2  [...***...]

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11.3  [...***...]

UNQUOTE

12    ASSIGNMENT

      In consideration of the assignment and subrogation by Seller under this
      Letter Agreement in favor of the Buyers in respect of Seller's rights
      against and obligations to the Manufacturer under the provisions quoted
      above, the Buyers hereby accepts such assignment and subrogation and
      agrees to be bound by all of the terms, conditions and limitations therein
      contained. The Buyers and Seller recognize and agree that, except as
      otherwise expressly provided in Clause 11 of this Letter Agreement, all
      the provisions of Clause 12 of the Agreement, including without limitation
      the Exclusivity of Warranties and General Limitations of Liability and
      Duplicate Remedies provisions therein contained, will apply to the
      foregoing performance guarantees.

      Except as set forth in Clause 20.2 of the Agreement, this Letter Agreement
      and the rights and obligations of the Buyers hereunder will not be
      assigned or transferred in any manner without prior written consent of
      AVSA and any attempted assignment or transfer in contravention of the
      provisions of this sentence will be void and of no force and effect.
      Notwithstanding the preceding sentence, the terms of Clauses 20.1 and 20.2
      of the Agreement will apply to this Letter Agreement.

      This Letter Agreement may be signed in any number of separate
      counterparts. Each counterpart, when signed and delivered (including
      counterparts delivered by facsimile transmission), will be an original,
      and the counterparts will together constitute one same instrument.

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IN WITNESS WHEREOF, these presents were entered into as of the day and year
first above written.

                                         Very truly yours,

                                         AVSA, S.A.R.L.

                                         By: __________________________________

                                         Its: __________________________________

      Accepted and Agreed

      US AIRWAYS GROUP, INC.

      By: _________________________
      Its:

      AMERICA WEST AIRLINES, INC.

      By: _________________________
      Its:

      US AIRWAYS GROUP, INC.

      By: _________________________
      Its:

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            *** CERTAIN CONFIDENTIAL INFORMATION HAS BEEN OMITTED AND
                FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
                    COMMISSION PURSUANT TO RULE 24b-2 OF THE
                   SECURITIES EXCHANGE ACT OF 1934, AS AMENDED

                             LETTER AGREEMENT NO. 9

                                                        As of September 27, 2005

US Airways Group, Inc.
US Airways, Inc.
America West Airlines, Inc.
4000 East Sky Harbor Boulevard
Phoenix, AZ 85034

Re: MAINTENANCE COST GUARANTEE

Dear Ladies and Gentlemen:

US Airways, Inc., America West Airlines, Inc. and US Airways Group, Inc. (the
"Buyers"), and AVSA, S.A.R.L. (the "Seller"), have entered into an Airbus A350
Purchase Agreement dated as of even date herewith (the "Agreement"), which
covers, among other things, the sale by the Seller and the purchase by the
Buyers of certain A350 Aircraft, under the terms and conditions set forth in
said Agreement. The Buyers and the Seller have agreed to set forth in this
Letter Agreement No. 9 (the "Letter Agreement") certain additional terms and
conditions regarding the sale of the A350 Aircraft. Capitalized terms used
herein and not otherwise defined in this Letter Agreement will have the meanings
assigned thereto in the Agreement. The terms "herein," "hereof" and "hereunder"
and words of similar import refer to this Letter Agreement.

Both parties agree that this Letter Agreement will constitute an integral,
nonseverable part of said Agreement, that the provisions of said Agreement are
hereby incorporated herein by reference, and that this Letter Agreement will be
governed by the provisions of said Agreement, except that if the Agreement and
this Letter Agreement have specific provisions which are inconsistent, the
specific provisions contained in this Letter Agreement will govern.

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The Seller represents and warrants that the Manufacturer has provided to the
Seller the maintenance cost guarantee that are reproduced below between the
words QUOTE and UNQUOTE, subject to the terms, conditions, limitations and
restrictions (including, but not limited to, the Exclusivity of Warranties and
General Limitations of Liability and Duplicate Remedies provisions) set forth
below. The Seller hereby assigns to the Buyers, and the Buyers hereby accepts,
all of the Seller's rights and obligations as the "Buyers" under the said
maintenance cost guarantees, and the Seller subrogates the Buyers to all such
rights and obligations in respect of the A350 Aircraft. The Seller hereby
warrants to the Buyers that (i) it has all requisite authority to make the
foregoing assignment to and to effect the foregoing subrogation in favor of the
Buyers, (ii) such assignment and subrogation are effective to confer on the
Buyers all of the foregoing rights and obligations of the Seller, (iii) the
provisions so assigned are in full force and effect and have not been amended
prior to the date hereof, and (iv) the Seller will not enter into any amendment
of the provisions so assigned without the prior written consent of the Buyers.

Prior to implementation of the following maintenance cost guarantee, the Buyers
will designate one Buyer who will act on behalf of the Buyers as a group, and
the Buyers will give notice to the Seller of this designation.

QUOTE

1.    SCOPE

1.1   The Seller hereby provides the Buyers with the following maintenance cost
      guarantee (the "Maintenance Cost Guarantee").

1.2   The Seller guarantees the maximum direct labor and material costs for
      parts and systems identified in Appendix 1 ("Parts and Systems"). The
      Maintenance Cost Guarantee applies to maintenance related to parts,
      subassemblies or assemblies that are scrapped in the process of
      maintaining, restoring or overhauling A350 Aircraft components categorized
      as "rotable" or "repairable" items, and does not include any indirect
      maintenance labor and material expenditures.

1.3   The Maintenance Cost Guarantee does not cover line maintenance or A
      checks, or any work related to either line maintenance or A checks
      (transit, daily and weekly checks and associated trouble-shooting and
      deferrals, etc.).

2.    DURATION

      This Maintenance Cost Guarantee covers the [...***...] period commencing
      on Delivery of the first A350-800 Aircraft, for A350-800 Aircraft, or
      A350-900 Aircraft, for A350-900 Aircraft (the "Duration").

3.    GUARANTEED DIRECT MAINTENANCE COST

3.1   Direct maintenance costs ("DMCs") are those maintenance labor and material
      costs directly expended in performing maintenance on an item or aircraft.

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      DMCs do not include those indirect maintenance labor and material
      expenditures which contribute to the overall maintenance operations, line
      station servicing, administration, record keeping, supervision, tooling,
      test equipment, facilities, etc.

      (DMC definition source: ATA CSDD - Common Support Data Dictionary.)

3.2   The Seller guarantees for the Duration that the Direct Maintenance Cost
      per flying hour for the maintenance, restoration, and overhaul of the
      Parts and Systems (the "Guaranteed Direct Maintenance Cost") will not
      exceed an average of:

      (i)   For the A350-800 Aircraft:

            (a)   [...***...] per flight hour for the First Computation Period
                  (as defined in Clause 6.2) (the "A350-800 First Guaranteed
                  DMC"); or

            (b)   [...***...] per flight hour for the Second Computation Period
                  (as defined in Clause 6.3) (the "A350-800 Second Guaranteed
                  DMC").

            The A350-800 First Guaranteed DMC and the A350-800 Second Guaranteed
            DMC are together the "A350-800 Guaranteed DMCs."

      (ii)  For the A350-900 Aircraft:

            (a)   [...***...] per flight hour for the First Computation Period
                  (as defined in Clause 6.2) (the "A350-900 First Guaranteed
                  DMC"); or

            (b)   [...***...] per flight hour for the Second Computation Period
                  (as defined in Clause 6.3) (the "A350-900 Second Guaranteed
                  DMC").

            The A350-900 First Guaranteed DMC and the A350-900 Second Guaranteed
            DMC are together the "A350-900 Guaranteed DMCs".

      The A350-800 Guaranteed DMCs and the A350-900 Guaranteed DMCs are
      collectively the "Guaranteed DMCs."

3.3   The Guaranteed DMC values are expressed in January 2005 prices. These
      prices will be increased every year in accordance with the Direct
      Maintenance Cost Adjustment Formula set out in Appendix 3.

4.    ADJUSTMENTS

4.1   The Guaranteed DMCs are based on the assumptions set out in Appendix 2 and
      an estimated A350 Aircraft average flight leg time of seven point zero
      (7.0) hours and an average usage rate of four thousand five hundred
      (4,500) flight hours per year per A350 Aircraft. Should

*** Confidential Treatment Requested

AWE/USA -A350                                                              LA9-3
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

      the applicable A350 Aircraft average flight leg time differ from seven
      point zero (7.0) hours, then adjustments will be made in accordance with
      the following formula No. 1.

             X + YT(F)
      C(G) = --------- formula No. (1)
               T(F)

      where,

      C(G)  is the A350-800 Guaranteed DMC or A350-900 Guaranteed DMC per flight
            hour, as applicable, in US dollars specified in Paragraph 3,

      T(F)  is the applicable A350 Aircraft average flight leg time, in hours.

      (i)   For the A350-800 Aircraft:

            for the First Computation Period

            X     is [...***...] per flight cycle,

            Y     is [...***...] per flight hour,

            for the Second Computation Period

            X     is [...***...] per flight cycle,

            Y     is [...***...] per flight hour,

      (ii)  For the A350-900 Aircraft:

            for the First Computation Period

            X     is [...***...] per flight cycle,

            Y     is [...***...] per flight hour,

            for the Second Computation Period

            X     is [...***...] per flight cycle,

            Y     is [...***...] per flight hour,

4.2   Should the applicable A350 Aircraft average usage rate differ from four
      thousand five hundred (4,500) flight hours by more than ten percent (10%),
      then the corresponding Guaranteed DMC values will be adjusted by the
      Seller accordingly.

5.    REPORTING

5.1   The Buyers will provide the Seller with complete and detailed maintenance
      cost data ("A350 Maintenance Cost Data") annually, in English for each
      A350 Aircraft. The A350

***Confidential Treatment Requested

AWE/USA -A350                                                              LA9-4
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      Maintenance Cost Data will include, as applicable:

      -     A350 Aircraft MSN or registration number

      -     All in-house accounting related to maintenance costs

      -     All invoicing related to maintenance costs

      -     Access to maintenance contracts where allowable

      -     Maintenance reports

      -     Pilots' reports

      -     Operational data such as A350 Aircraft flight hours and flight
            cycles and auxiliary power unit running hours

5.2   If the Seller finds such A350 Maintenance Cost Data to be insufficiently
      detailed or unsubstantiated, the Buyers, using reasonable efforts, will
      supply additional data at the Seller's request.

5.3   With respect to maintenance or repairs subcontracted by the Buyers to, and
      performed by, third parties, the actual direct cost of consumed material
      will be deemed to be [...***...] of the price to the Buyers of
      such maintenance or repairs, if an insufficient breakdown of such
      maintenance or repair costs is supplied.

5.4   The Buyers will deliver the A350 Maintenance Cost Data not later than
      [...***...] following the end of each of its accounting years; and the
      Buyers will put at the Seller's disposal any documents, records, books,
      etc. necessary for validating the Buyers' information.

5.5   Should the Buyers not be able to provide sufficient Maintenance Cost Data
      to the Seller for the purpose of this Maintenance Cost Guarantee, the
      Buyers will notify the Seller within [...***...] after the end of the
      first of the Buyers' accounting years of the reasons why.

      If the Seller receives no A350 Maintenance Cost Data from the Buyers
      within [...***...] after the end of the second of the Buyers'
      accounting years occurring during the Duration, then the Direct
      Maintenance Costs will be considered acceptable to the Buyers and this
      Maintenance Cost Guarantee will automatically terminate.

6.    RESULTS AND REMEDY

6.1.  Annual Reviews

6.1.1 Not later than [...***...] following the end of each accounting year of
      the Buyers, the Buyers and the Seller will organize an annual maintenance
      cost review, in order to:

      (a)   jointly review the accounted DMCs,

      (b)   correct any accounting error in the actual DMCs due to any of the
            exclusions in Paragraph 8 and/or Appendix 1,

      (c)   make any necessary adjustments to the actual DMCs in accordance with
            Paragraphs 4 and/or 7,

***Confidential Treatment Requested

AWE/USA -A350                                                              LA9-5
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      and calculate, for each A350 Aircraft, the following parameters:

      C(AN) the actual DMC of the applicable A350 Aircraft in US dollars per
            flight hour for each year in the Duration as measured by the
            Accounting System (defined in Paragraph 11.1) and agreed by the
            Seller, and

      C(GN) the Guaranteed DMC as determined pursuant to Clause 4 for the year
            "N."

6.1.2 The Seller will, following these analyses and reviews and at the Seller's
      discretion, propose maintenance cost reduction initiatives and/or
      recommendations to the Buyers including, but not limited to, those
      described in Paragraph 9.

6.1.3 As a result of the third year annual maintenance cost review, should the
      Buyers and Seller mutually agree that the adjusted DMCs for the A350
      Aircraft exceed the Guaranteed Direct Maintenance Cost by more than
      [...***...] during each of the first three (3) consecutive years
      of the Duration, then the interval between computation periods will be
      adjusted to [...***...], and Paragraphs 6.2 and 6.3 will be modified
      accordingly.

6.2   First Computation Period

6.2.1 Within [...***...] after the end of the [...***...] of the Duration (the
      "A350-800 First Computation Period" for the A350-800 Aircraft and the
      "A350-900 First Computation Period" for the A350-900 Aircraft), the Direct
      [...***...] for each of the first [...***...] of the Duration will
      be calculated in accordance with Paragraph 4. The Seller and the Buyers
      will:

      (a)   jointly review the accounted DMCs,

      (b)   correct any accounting error in the actual DMCs due to any of the
            exclusions in Paragraph 8 and/or Appendix 1,

      (c)   make any necessary adjustments to the actual DMCs in accordance with
            Paragraphs 4 and/or 7, and

      (d)   calculate for each A350 Aircraft the Seller's liability for the
            A350-800 First Computation Period and A350-900 First Computation
            Period, as applicable, using formula No. (2) below:

            [...***...]

            where,

            [...***...]

AWE/USA -A350                                                              LA9-6
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            C(AN) and C(GN) are determined as provided in Clause 6.1.1 for each
            of the first [...***...] of the Duration.

6.2.2 [...***...]

6.2.3 [...***...]

6.3   Second Computation Period

6.3.1 Within [...***...] after the end of the Duration, the Direct
      Maintenance Costs for each of the [...***...] of the Duration (the
      "A350-800 Second Computation Period" for the A350-800 Aircraft and the
      "A350-900 Second Computation Period" for the A350-900 Aircraft) will be
      calculated in accordance with Paragraph 4. The Seller and the Buyers will:

      (a)   jointly review the accounted DMCs,

      (b)   correct any accounting error in the actual DMCs due to any of the
            exclusions in Paragraph 8 and/or Appendix 1,

      (c)   make any necessary adjustments to the actual DMCs in accordance with
            Paragraphs 4 and/or 7 ,

      (d)   calculate for each A350 Aircraft the Seller's liability for the
            A350-800 Second Computation Period or A350-900 Second Computation
            Period, as applicable, using formula No. (3) below:

                       12
            [...***...] formula No. (3)
                       n=1

      where,

            [...***...]

            [...***...]

            C(AN) and C(GN) are as determined pursuant to Paragraph 6.1.1 for
            each of the twelve (12) years of the Duration.

***Confidential Treatment Requested

AWE/USA -A350                                                              LA9-7
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6.3.2 [...***...]

6.3.3 [...***...]

6.3.4 [...***...]

7.    CONDITIONS OF THE GUARANTEE

7.1   Guaranteed DMC values in Paragraph 3 are based on a typical block concept
      maintenance program approved by the FAA, covering routine maintenance
      tasks and their associated non- routine work, as specified in the Airbus
      Maintenance Planning Document ("Airbus MPD").

      The Guaranteed DMC values will be revised by the Seller and the Buyers,
      subject to mutual agreement, in accordance with the maintenance tasks
      specified in the A350 Airbus MPD of the Buyers' FAA approved maintenance
      program developed by the Buyers and based on the Airbus MPD, when
      finalized and in accordance with the Buyers' organization of, and strategy
      for A350 Aircraft maintenance.

      In addition to the adjustments described in Paragraph 4, any changes to
      the conditions herein will be cause for reevaluation and/or adjustment of
      the Maintenance Cost Guarantee, including, but not limited to:

      (a)   Changes in the assumptions listed in Appendix 2.

      (b)   One or more contracts and/or fixed cost per flight hour or per
            landing agreements between the Buyers and third parties are
            concluded. The Buyers will provide the Seller with a true and
            complete copy of each such agreement.

            The Seller agrees not to disclose any information in any such
            agreement to third parties. If, notwithstanding such non-disclosure
            commitment from the Seller, the Buyers is precluded from disclosing
            all relevant particulars of any such agreement to the Seller after
            having made best efforts to obtain consent from the relevant third
            party, the Seller may consider alternative information from the
            Buyers, provided that such information is acceptable to the Seller,
            at its sole discretion, in determining whether there is cause for
            reevaluation and/or adjustment of this Maintenance Cost Guarantee.

***Confidential Treatment Requested

AWE/USA -A350                                                              LA9-8
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      (c)   Should there occur any certification, regulatory or A350 Aircraft
            operational changes outside the Seller's control or influence that
            may have an effect on the Buyers' Direct Maintenance Costs.

7.2   The obligations of the Seller hereunder are subject to each of the
      following requirements:

      (a)   This Maintenance Cost Guarantee covers routine tasks as defined in
            the Airbus MPD and non-routine related findings and refurbishing
            work in accordance with approved maintenance practices.

      (b)   The Buyers' maintenance personnel, including its maintenance control
            center personnel will be trained to a level equivalent to Airbus
            training level III where required, and they will receive periodic
            refreshment training.

      (c)   Parts, equipments and tools will be maintained by the Buyers in
            accordance with manufacturers' recommendations.

      (d)   The Buyers will comply with the Airbus no-fault-found policy (NFF),
            or if not possible, the Buyers will demonstrate to the Seller the
            non-applicability due to the A350 Aircraft operational constraints.

      (e)   The Seller's representatives will be fully authorized by the Buyers
            to visit the Buyers' or its maintenance provider's facilities to
            confirm the implementation by the Buyers of the Seller's maintenance
            procedures and to audit maintenance costs accounting.

      (f)   AIRMAN (or equivalent reporting system utilized by Buyers) with
            real-time access, will be implemented by the Buyers to launch,
            report and track maintenance actions.

      (g)   Shop-findings related to an equipment or line replaceable unit
            removal will be collected and recorded with the job-card or log-book
            reference.

      (h)   Elapsed time and man-hours expended on each action will be recorded
            onto the relevant job card to enable retrieval of the information
            from AIRMAN (or equivalent reporting system utilized by Buyers).

      (i)   The Buyers will implement the recommendations mutually agreed on by
            the Seller and the Buyers following a "Best Industry Practices"
            review.

      (j)   Deferred line maintenance actions will be tracked and reported.

8.    EXCLUSIONS

      This Maintenance Cost Guarantee will only apply to Direct Maintenance
      Costs arising from proper operations, and will not cover Direct
      Maintenance Costs resulting from:

      -     force majeure,

      -     acts of any third party,

      -     consequential damages,

      -     negligence, incidental or accidental damage,

      -     modifications not related to a decrease in Direct Maintenance Cost,

AWE/USA -A350                                                              LA9-9
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      -     line maintenance (transit, daily and weekly checks and associated
            trouble-shooting and deferrals, etc.),

      -     all A-checks and associated trouble-shooting,

      -     maintenance performed for Propulsion Systems, Propulsion Systems
            manufacturer supplied equipment, Propulsion Systems related Buyer
            Furnished Equipment,

      -     maintenance of equipment classified as Buyer Furnished Equipment,

      -     maintenance of equipment classified as Operator Furnished Equipment
            under the A350-800 Standard Specification, Issue B or A350-900
            Standard Specification, Issue B,

      -     non-routine work exceeding twenty-five (25) man-hours per Airbus MPD
            task,

      -     non-compliance by the Buyers with accepted industry practices or
            acts attributable to the negligence of the Buyers or its
            subcontractors and agents,

      -     partial or complete painting of the A350 Aircraft for cosmetic
            reasons (this exclusion does not include painting for corrosion
            preventative maintenance),

      -     refurbishing work that is included in the Buyers' FAA approved
            maintenance program but not in accordance with and not directly
            related to routine Airbus MPD tasks,

      -     any maintenance task that is not included in the Buyers' FAA
            approved maintenance program and does not originate from the Airbus
            MPD.

      In addition, the following costs are specifically excluded:

      -     cost of taxes, duties, transportation, interest, overheads, burden
            or other charges which are not the Seller's responsibility,

      -     cost of fluids, compounds, paints and cleaning material, and any
            other such disposable materials, and

      -     all handling fees.

9.    MAINTENANCE COST REDUCTION INITIATIVES

9.1   As stated in Paragraphs 6.2 and 6.3, during any review of the Buyers'
      maintenance operations, in the event that the A350-800 Guaranteed DMC or
      A350-900 Guaranteed DMC level is exceeded, the Seller may propose
      initiatives and/or recommendations to reduce maintenance costs. To make
      these proposals, the Seller may audit the Buyers' maintenance operation
      and or selected maintenance provider's A350 Maintenance Cost Data to
      propose:

      -     modifications in working practices,

      -     technical reviews,

      -     an alternative maintenance provider or maintenance solution

      -     modifications to maintenance programs (including escalation where
            possible) or training, and/or

      -     any other action which should lead to a reduction of the Buyers'
            direct labor man-hour maintenance expenditure.

9.2   Should the Buyers or its maintenance provider elect to not implement or
      disagree as to the effectiveness of such initiatives and/or
      recommendations proposed by the Seller, the

AWE/USA -A350                                                             LA9-10
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      Buyers will then reasonably demonstrate to the Seller that those
      initiative and/or recommendations to reduce maintenance costs are
      ineffective, uneconomical and impractical in reducing the A350 Maintenance
      Cost Data for the Buyers' operations. Both parties will then use
      reasonable efforts to determine mutually acceptable maintenance cost
      reduction initiatives.

      The Seller reserves the right to reasonably deduct from the actual DMC the
      benefits expected from the implementation of such initiatives and or
      recommendations.

9.3   For the Duration, the Buyers will use all means possible to incorporate
      modifications (including, but not limited to, Service Bulletins),
      procedures or recommendations (collectively, "Recommendations") that may
      be made by the Seller to reduce the DMCs of the A350 Aircraft, [...***...]

10.   MAINTENANCE PROCEDURES

      The Buyers will perform its maintenance operations in compliance with the
      applicable FAA approved A350 Aircraft maintenance and overhaul manuals.
      Such maintenance operations will be performed by appropriately trained
      personnel and FAA approved maintenance organizations.

11.   ACCOUNTING SYSTEM

11.1  This Maintenance Cost Guarantee is subject to the establishment by the
      Buyers of an accounting system relating to its maintenance costs (an
      "Accounting System") that is approved by the Seller not later than
      [...***...] prior to Delivery of the first A350 Aircraft, to ensure
      accurate maintenance cost reporting hereunder. If the Seller fails to
      conduct a review of they Buyers' accounting system at this time, the
      Buyers' accounting system will be deemed acceptable and will be used the
      source of the information needed to provide the required information.

11.2  The Accounting System will take into account any and all warranty,
      guarantee and other, similar payments made by the Seller or any other
      person in respect of any item of equipment the maintenance costs of which
      are proposed by the Buyers to be included in the calculation of its direct
      maintenance costs for purposes of this Letter Agreement.

11.3  Should the Accounting System not provide for accurate cost reporting to
      the Seller's satisfaction, the Guaranteed DMC will be mutually reviewed
      and agreed between the Buyers and the Seller.

12.   DISRUPTIONS

      The provisions of this Maintenance Cost Guarantee will not apply during
      any period when the Buyers experiences disruptions of operations.

***Confidential Treatment Requested

AWE/USA -A350                                                             LA9-11
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13.   [...***...]

14.   SELLER'S LIABILITY

      The Seller's liability under this Maintenance Cost Guarantee will be
      governed solely by the terms of the present Maintenance Cost Guarantee

15.   NO DUPLICATE REMEDIES

      The intent of this Maintenance Cost Guarantee is to provide benefits to
      the Buyers in order to ensure that the actual direct maintenance cost
      levels of the A350 Aircraft are not higher than the Guaranteed Direct
      Maintenance Costs. It is not the intent, however, to duplicate similar
      benefits available to the Buyers under any other applicable agreement
      (including, without limitation, the Agreement), guarantee, warranty,
      service life policy, or any other special benefit of any kind.

16.   ASSIGNMENT

      Except as set forth in Clause 20.2 of the Agreement, this Letter Agreement
      and the rights and obligations of the Buyers herein will not be assigned
      or transferred in any manner and any attempted assignment or transfer in
      contravention of the provisions of this paragraph will be void and of no
      force or effect.

17.   NEGOTIATED AGREEMENT

      THE BUYERS AND THE SELLER AGREE THAT THIS LETTER AGREEMENT HAS BEEN THE
      SUBJECT OF DISCUSSIONS AND NEGOTIATION BY THE PARTIES AND THAT THE OTHER
      MUTUAL AGREEMENT OF THE PARTIES SET FORTH IN THE PURCHASE AGREEMENT WERE
      ARRIVED AT IN CONSIDERATION OF, INTER ALIA, THE PROVISIONS OF THIS LETTER
      AGREEMENT.

      UNQUOTE

      In consideration of the assignment and subrogation by the Seller under
      this Letter Agreement in favor of the Buyers in respect of the Seller's
      rights against and obligations to the Manufacturer under the provisions
      quoted above, the Buyers hereby accepts such assignment and subrogation
      and agrees to be bound by all of the terms, conditions and limitations
      therein contained. The Buyers and Seller recognize and agree that all the
      provisions of Clause 12 of the Agreement, mutatis mutandis, including
      without limitation the Exclusivity of Warranties and General Limitations
      of Liability and Duplicate Remedies provisions therein contained, will
      apply to the foregoing maintenance cost guarantee.

***Confidential Treatment Requested

AWE/USA -A350                                                             LA9-12
                           PRIVILEGED AND CONFIDENTIAL

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18.   ASSIGNMENT

      Except as set forth in Clause 20.2 of the Agreement, this Letter Agreement
      and the rights and obligations of the Buyers hereunder will not be
      assigned or transferred in any manner without the prior written consent of
      the Seller, and any attempted assignment or transfer in contravention of
      the provisions of this paragraph will be void and of no force or effect.

19.   COUNTERPARTS

      This Letter Agreement may be signed in any number of separate
      counterparts. Each counterpart, when signed and delivered (including
      counterparts delivered by facsimile transmission), will be an original,
      and the counterparts will together constitute one same instrument.

AWE/USA -A350                                                             LA9-13
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      IN WITNESS WHEREOF, these presents were entered into as of the day and
      year first above written.

                                                Very truly yours,

                                                AVSA, S.A.R.L.

                                                By: ____________________________

                                                Its:

      Accepted and Agreed

      US Airways, Inc.

      By: _________________________
      Its:

      America west airlines, Inc.

      By: _________________________
      Its:

      US AIRWAYS GROUP, INC.

      By: _________________________
      Its:

AWE/USA -A350                                                             LA9-14
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                    APPENDIX 1 TO MAINTENANCE COST GUARANTEE

The following systems are covered by the Maintenance Cost Guarantee:

<TABLE>
<CAPTION>
System No.       System Name                       System/subsystem exclusions
------------------------------------------------------------------------------
<S>              <C>                               <C>

[...***...]

</TABLE>

The following are also excluded from the Maintenance Cost Guarantee in their
entirety:

      -     Seller Furnished Equipment that has been changed from Buyer
            Furnished Equipment at the Buyers' request;

      -     Buyer Furnished Equipment and

      -     Optional Equipment.

If the Buyers enters into direct agreements with third parties for the
maintenance of brakes, wheels, tires, APU, landing gear, etc., then, as set
forth in Paragraph 7.1, the Guaranteed DMCs will be adjusted accordingly.

***Confidential Treatment Requested

AWE/USA -A350                                                             LA9-15
                           PRIVILEGED AND CONFIDENTIAL

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                    APPENDIX 2 TO MAINTENANCE COST GUARANTEE

Basis assumptions:

Average sector length:          7.0 flight hours
Average annual utilization:     4,500 flight hours

Proportion of work carried out in-house:

[...***...]

In-house conditions:

[...***...]

Subcontracted conditions:

[...***...]

***Confidential Treatment Requested

AWE/USA -A350                                                             LA9-16
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

                    APPENDIX 3 TO MAINTENANCE COST GUARANTEE

                   DIRECT MAINTENANCE COST ADJUSTMENT FORMULA

                                  [...***...]
      Where

            [...***...]

[...***...]

*** Confidential Treatment Requested

AWE/USA -A350                                                             LA9-17
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>
            ***CERTAIN CONFIDENTIAL INFORMATION HAS BEEN OMITTED AND
                FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
                    COMMISSION PURSUANT TO RULE 24b-2 OF THE
                   SECURITIES EXCHANGE ACT OF 1934, AS AMENDED

                             LETTER AGREEMENT NO. 10

                                                        As of September 27, 2005

US Airways Group, Inc.
US Airways, Inc.
America West Airlines, Inc.
4000 East Sky Harbor Boulevard
Phoenix, AZ  85034

Re:  MISCELLANEOUS

Ladies and Gentlemen,

US Airways, Inc., America West Airlines, Inc. and US Airways Group, Inc. (the
"Buyers"), and AVSA, S.A.R.L. (the "Seller"), have entered into an Airbus A350
Purchase Agreement dated as of the date hereof (the "Agreement"), which covers,
among other things, the sale by the Seller and the purchase by the Buyers of
certain Aircraft, under the terms and conditions set forth in said Agreement.
The Buyer and the Seller have agreed to set forth in this Letter Agreement No.
10 (the "Letter Agreement") certain additional terms and conditions regarding
the sale of the Aircraft. Capitalized terms used herein and not otherwise
defined in this Letter Agreement will have the meanings assigned thereto in the
Agreement. Technical and trade terms used but not defined herein or in the
Agreement will be defined as generally accepted in the airline and/or aircraft
manufacturing industries. The terms "herein," "hereof" and "hereunder" and words
of similar import refer to this Letter Agreement.

All of the parties agree that this Letter Agreement will constitute an integral,
nonseverable part of said Agreement, that the provisions of said Agreement are
hereby incorporated herein by reference, and that this Letter Agreement will be
governed by the provisions of said Agreement, except that if the Agreement and
this Letter Agreement have specific provisions which are inconsistent, the
specific provisions contained in this Letter Agreement will govern.

                                                                          LA10-1

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1.          CROSS-DEFAULT

            Clause 21.1 of the Agreement is hereby amended by the addition of
            the following text:

      QUOTE

            [...***...]

      UNQUOTE

2.          LEASED AIRCRAFT

            [...***...]

                                                                          LA10-2
*** Confidential Treatment Requested

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                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

3.          [...***...]

4.          TERMINATION

            [...***...]

            QUOTE

                  [...***...]

                                                                          LA10-3

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                           PRIVILEGED AND CONFIDENTIAL

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            UNQUOTE

5.          CONDITIONS PRECEDENT

            It will be a condition precedent to the effectiveness of this
            Agreement that the conditions precedent to the obligations of Airbus
            Financial Services (the "Lender") set forth in the $161,000,000 Loan
            Agreement dated as September 27, 2005 among US Airways, Inc.,
            America West Airlines, Inc., US Airways Group, Inc., the Lender and
            Wells Fargo Bank Northwest, National Association, as Collateral
            Agent, have been either satisfied or been waived by the Lender.

6.          ASSIGNMENT

            Except as set forth in Clause 20.2 of the Agreement, this Letter
            Agreement and the rights and obligations of the Buyer hereunder will
            not be assigned or transferred in any manner without the prior
            written consent of the Seller, and any attempted assignment or
            transfer in contravention of the provisions of this Paragraph 6 will
            be void and of no force or effect.

7.          COUNTERPARTS

            This Letter Agreement may be signed in any number of separate
            counterparts. Each counterpart, when signed and delivered (including
            counterparts delivered by facsimile transmission), will be an
            original, and the counterparts will together constitute one same
            instrument.

                                                                          LA10-4

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                           PRIVILEGED AND CONFIDENTIAL

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IN WITNESS WHEREOF, these presents were entered into as of the day and year
first above written.

                                                     Very truly yours,

                                                     AVSA, S.A.R.L.

                                                     By:   ____________________

                                                     Its:

      Accepted and Agreed

      US AIRWAYS GROUP, Inc.

      By: _________________________
      Its:

      AMERICA WEST AIRLINES, INC.

      By: _________________________
      Its:

      US AIRWAYS, INC.

      By: _________________________
      Its:

                                                                          LA10-5

AWE/USA -- A350

                           PRIVILEGED AND CONFIDENTIAL
<PAGE>

            ***CERTAIN CONFIDENTIAL INFORMATION HAS BEEN OMITTED AND
                FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
                    COMMISSION PURSUANT TO RULE 24b-2 OF THE
                   SECURITIES EXCHANGE ACT OF 1934, AS AMENDED

                             LETTER AGREEMENT NO. 11

                                                        As of September 27, 2005

US Airways Group, Inc.
US Airways, Inc.
America West Airlines, Inc.
4000 East Sky Harbor Boulevard
Phoenix, AZ 85034

Re: PREDELIVERY PAYMENTS

Ladies and Gentlemen,

US Airways, Inc., America West Airlines, Inc. and US Airways Group, Inc. (the
"Buyers"), and AVSA, S.A.R.L. (the "Seller"), have entered into an Airbus A350
Purchase Agreement dated as of even date herewith (the "Agreement"), which
covers, among other things, the sale by the Seller and the purchase by the
Buyers of certain Aircraft, under the terms and conditions set forth in said
Agreement. The Buyers and the Seller have agreed to set forth in this Letter
Agreement No. 11 (the "Letter Agreement") certain additional terms and
conditions regarding the sale of the Aircraft. Capitalized terms used herein and
not otherwise defined in this Letter Agreement will have the meanings assigned
thereto in the Agreement. Technical and trade terms used but not defined herein
or in the Agreement will be defined as generally accepted in the airline and/or
aircraft manufacturing industries. The terms "herein," "hereof" and "hereunder"
and words of similar import refer to this Letter Agreement.

All of the parties agree that this Letter Agreement will constitute an integral,
nonseverable part of said Agreement, that the provisions of said Agreement are
hereby incorporated herein by reference, and that this Letter Agreement will be
governed by the provisions of said Agreement, except that if the Agreement and
this Letter Agreement have specific provisions which are inconsistent, the
specific provisions contained in this Letter Agreement will govern.

                                                                          LA11-1

AWE/A350--A350

                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

1.    [...***...]

***Confidential Treatment Requested

                                                                          LA11-2

AWE/A350--A350

                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

2.    ASSIGNMENT

      Except as set forth in Clause 20.2 of the Agreement, this Letter Agreement
      and the rights and obligations of the Buyers hereunder will not be
      assigned or transferred in any manner without the prior written consent of
      the Seller, and any attempted assignment or transfer in contravention of
      the provisions of this Paragraph 2 will be void and of no force or effect.

3.    COUNTERPARTS

      This Letter Agreement may be signed in any number of separate
      counterparts. Each counterpart, when signed and delivered (including
      counterparts delivered by facsimile transmission), will be an original,
      and the counterparts will together constitute one same instrument.

                                                                          LA11-4

AWE/A350--A350

                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

      IN WITNESS WHEREOF, these presents were entered into as of the day and
      year first above written.

                                      Very truly yours,

                                      AVSA, S.A.R.L.

                                      By:  __________________________
                                      Its:

       Accepted and Agreed

       US AIRWAYS, INC.

       By: __________________________
       Its:

       AMERICA WEST AIRLINES, INC.

       By: _________________________
       Its:

       US AIRWAYS GROUP, INC.

       By: _________________________
       Its
                                                                          LA11-5

AWE/A350--A350

                           PRIVILEGED AND CONFIDENTIAL
<PAGE>

            ***CERTAIN CONFIDENTIAL INFORMATION HAS BEEN OMITTED AND
                FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
                    COMMISSION PURSUANT TO RULE 24b-2 OF THE
                   SECURITIES EXCHANGE ACT OF 1934, AS AMENDED

                             LETTER AGREEMENT NO. 12

                                                        As of September 27, 2005

      US Airways Group, Inc.
      US Airways, Inc.
      America West Airlines, Inc.
      4000 East Sky Harbor Boulevard
      Phoenix, AZ  85034

      Re: [...***...]

      Dear Ladies and Gentlemen:

      US Airways, Inc., America West Airlines, Inc. and US Airways Group, Inc.
      (the "Buyers"), and AVSA, S.A.R.L. (the "Seller"), have entered into an
      Airbus A350 Purchase Agreement dated as of even date herewith (the
      "Agreement"), which covers, among other things, the sale by the Seller and
      the purchase by the Buyers of certain A350-800 Aircraft, under the terms
      and conditions set forth in said Agreement. The Buyers and the Seller have
      agreed to set forth in this Letter Agreement No. 12 (the "Letter
      Agreement") certain additional terms and conditions regarding the sale of
      the A350-800 Aircraft. Capitalized terms used herein and not otherwise
      defined in this Letter Agreement will have the meanings assigned thereto
      in the Agreement. Technical and trade terms used but not defined herein or
      in the Agreement will be defined as generally accepted in the airline
      and/or aircraft manufacturing industries. The terms "herein," "hereof" and
      "hereunder" and words of similar import refer to this Letter Agreement.

      All of the parties agree that this Letter Agreement will constitute an
      integral, nonseverable part of said Agreement, that the provisions of said
      Agreement are hereby incorporated herein by reference, and that this
      Letter Agreement will be governed by the provisions of said Agreement,
      except that if the Agreement and this Letter Agreement have specific
      provisions which are inconsistent, the specific provisions contained in
      this Letter Agreement will govern.

***Confidential Treatment Requested

AWE/A350 -A350                                                          LA 12-1
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>
      The Seller represents and warrants that the Manufacturer has provided to
      the Seller the [...***...] (the "Guarantees") that are reproduced below
      between the words QUOTE and UNQUOTE, subject to the terms, conditions,
      limitations and restrictions (including, but not limited to, the
      Exclusivity of Warranties and General Limitations of Liability and
      Duplicate Remedies provisions) set forth below. The Seller hereby assigns
      to the Buyers, and the Buyers hereby accept, all of the Seller's rights
      and obligations as the "Buyers" under the said Guarantees, and the Seller
      subrogates the Buyers to all such rights and obligations in respect of the
      A350-800 Aircraft. The Seller hereby warrants to the Buyers that (i) it
      has all requisite authority to make the foregoing assignment to and to
      effect the foregoing subrogation in favor of the Buyers, (ii) such
      assignment and subrogation are effective to confer on the Buyers all of
      the foregoing rights and obligations of the Seller, (iii) the provisions
      so assigned are in full force and effect and have not been amended prior
      to the date hereof, and (iv) the Seller will not enter into any amendment
      of the provisions so assigned without the prior written consent of the
      Buyers.

QUOTE

1     PREAMBLE

1.1   AIRCRAFT CONFIGURATION

      The guarantees defined below ("the Guarantees") are applicable to the
      A350-800 Aircraft as described in the Standard Specification Ref. G 000
      08000 Issue A dated February 28th, 2005 and [...***...].

1.2   INTRODUCTION

      The paragraphs hereafter define the Guarantee provided by the Seller to
      the Buyers, together with the associated conditions, compliance
      demonstration and settlement procedures. [...***...].

2     [...***...]

2.1   This Guarantee will apply to the Aircraft as defined in the preamble to
      this Letter Agreement.

      The term "Fleet" will mean a fleet of A350 Aircraft to be delivered
      [...***...].

      The Guarantee [...***...], is based on such delivery plan of Buyers' A350
      Aircraft and will be reviewed in good faith between the Buyers and the
      Seller should the actual delivery plan (dates, composition of the fleet,
      number of firm aircraft) differ from the planned delivery schedule
      [...***...].

***Confidential Treatment Requested

AWE/A350 -A350                                                          LA 12-2
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

2.2   [...***...]

2.3   [...***...]

***Confidential Treatment Requested

AWE/A350 -A350                                                          LA 12-3
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>
3     [...***...]

***Confidential Treatment Requested

AWE/A350 -A350                                                          LA 12-4
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>
4     [...***...]

***Confidential Treatment Requested

AWE/A350 -A350                                                          LA 12-5
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>
AWE/A350 -A350                                                          LA 12-6
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

5     [...***...]

***Confidential Treatment Requested

AWE/A350 -A350                                                          LA 12-7
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

AWE/A350 -A350                                                          LA 12-8
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

6.    [...***...]

***Confidential Treatment Requested

AWE/A350 -A350                                                          LA 12-9
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

7.    [...***...]

8     [..***...]

***Confidential Treatment Requested

AWE/A350 -A350                                                          LA 12-10
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

9     [...***...]

10    [...***...]

11    NON TRANSFERABILITY

      This Letter Agreement is not transferable, notwithstanding clause 21 of
      the Agreement, and the Buyers' rights under this Letter Agreement will not
      be assigned, sold, transferred or otherwise alienated by operation of law
      or otherwise to any person other than the Buyers. Any unauthorised
      assignment, sale, transfer or other alienation of the Buyers' rights under
      this Letter Agreement with respect to any Aircraft will immediately void
      this Letter Agreement in its entirety as to any such Aircraft.

UNQUOTE

12    ASSIGNMENT

      In consideration of the assignment and subrogation by the Seller under
      this Letter Agreement in favor of the Buyer in respect of the Seller's
      rights against and obligations to the Manufacturer under the provisions
      quoted above, the Buyer hereby accepts such assignment and subrogation and
      agrees to be bound by all of the terms, conditions and limitations therein
      contained. The Buyer and Seller recognize and agree that all the
      provisions of Clause 12 of the Agreement, including without limitation the
      Exclusivity of Warranties and General Limitations of Liability and
      Duplicate Remedies provisions therein contained, will apply to the
      foregoing Performance Retention Guarantee.

      Except as set forth in Clause 20.2 of the Agreement, this Letter Agreement
      and the rights and obligations of the Buyers hereunder will not be
      assigned or transferred in any manner without prior written consent of the
      Seller and any attempted assignment or transfer in contravention of the
      provisions of this sentence will be void and of no force and effect.

13.   COUNTERPARTS

      This Letter Agreement may be signed in any number of separate
      counterparts. Each counterpart, when signed and delivered (including
      counterparts delivered by facsimile transmission), will be an original,
      and the counterparts will together constitute one same instrument.

***Confidential Treatment Requested

AWE/A350 -A350                                                          LA 12-11
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

      IN WITNESS WHEREOF, these presents were entered into as of the day and
year first above written.

                                            Very truly yours,

                                            AVSA, S.A.R.L.

                                            By: __________________________
                                            Its:

Accepted and Agreed

US AIRWAYS GROUP, INC.

By: _________________________
Its:

AMERICA WEST AIRLINES, INC.

By: _________________________
Its:

US AIRWAYS GROUP, INC.

By: _________________________
Its:

AWE/A350 -A350                                                          LA 12-12
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>
                                  [...***...]

*** Confidential Treatment Requested

AWE/A350 -A350                                                          LA 12-13
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

                                  [...***...]

***Confidential Treatment Requested

AWE/A350 -A350                                                          LA 12-15
                           PRIVILEGED AND CONFIDENTIAL
<PAGE>

            ***CERTAIN CONFIDENTIAL INFORMATION HAS BEEN OMITTED AND
                FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE
                    COMMISSION PURSUANT TO RULE 24B-2 OF THE
                   SECURITIES EXCHANGE ACT OF 1934, AS AMENDED

                             LETTER AGREEMENT NO. 13

                                                        As of September 27, 2005

      US Airways Group, Inc.
      US Airways, Inc.
      America West Airlines, Inc.
      4000 East Sky Harbor Boulevard
      Phoenix, AZ 85034

      Re:DISPATCH RELIABILITY GUARANTEE

      Dear Ladies and Gentlemen:

      US Airways, Inc., America West Airlines, Inc. and US Airways Group, Inc.
      (the "Buyers"), and AVSA, S.A.R.L. (the "Seller"), have entered into an
      Airbus A350 Purchase Agreement dated as of even date herewith (the
      "Agreement"), which covers, among other things, the sale by the Seller and
      the purchase by the Buyers of certain A350-800 Aircraft, under the terms
      and conditions set forth in said Agreement. The Buyers and the Seller have
      agreed to set forth in this Letter Agreement No. 13 (the "Letter
      Agreement") certain additional terms and conditions regarding the sale of
      the A350-800 Aircraft. Capitalized terms used herein and not otherwise
      defined in this Letter Agreement will have the meanings assigned thereto
      in the Agreement. Technical and trade terms used but not defined herein or
      in the Agreement will be defined as generally accepted in the airline
      and/or aircraft manufacturing industries. The terms "herein," "hereof" and
      "hereunder" and words of similar import refer to this Letter Agreement.

      All of the parties agree that this Letter Agreement will constitute an
      integral, nonseverable part of said Agreement, that the provisions of said
      Agreement are hereby incorporated herein by reference, and that this
      Letter Agreement will be governed by the provisions of said Agreement,
      except that if the Agreement and this Letter Agreement have specific
      provisions which are inconsistent, the specific provisions contained in
      this Letter Agreement will govern.

      AWE/USA--A350                                                     LA 13-1
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

      The Seller represents and warrants that the Manufacturer has provided to
      the Seller the dispatch reliability guarantees that are reproduced below
      between the words QUOTE and UNQUOTE, subject to the terms, conditions,
      limitations and restrictions set forth below. The Seller hereby assigns to
      the Buyers, and the Buyers hereby accept, as to each A350-800 Aircraft
      delivered to the Buyers under the Agreement, all of the Seller's rights
      and obligations with respect to such A350-800 Aircraft in its capacity as
      "Buyers" as aforesaid under the said dispatch reliability guarantees, and
      the Seller subrogates the Buyers into all such rights and obligations in
      respect of the A350-800 Aircraft. The Seller hereby warrants to the Buyers
      that (i) it has all requisite authority to make the foregoing assignment
      to and to effect the foregoing subrogation in favor of the Buyers, (ii)
      such assignment and subrogation are effective to confer on the Buyers all
      of the foregoing rights and obligations of the Seller, (iii) the
      provisions so assigned are in full force and effect and have not been
      amended prior to the date hereof, and (iv) the Seller will not enter into
      any amendment of the provisions so assigned without the prior written
      consent of the Buyers.

      QUOTE

1.    SCOPE

      The Buyer and the Seller agree they have a mutual interest in the
      technical reliability of the Buyer's Aircraft fleet to be of a high order,
      with a high probability that the aircraft will be Dispatched on time
      ("Dispatch Reliability"). This Letter Agreement extends to the Buyer's
      Aircraft fleet described in the Agreement and operated by the Buyer, a
      Dispatch Reliability guarantee (the "Guarantee").

2.    DURATION

      The obligations of the Buyer and the Seller under this Letter Agreement
      shall become binding upon signature of the Agreement and shall remain in
      force for a period of [...***...] from delivery of the first (1st)
      Aircraft to the Buyer (the "Duration").

      At the end of the year following the Duration, the Buyer and the Seller
      will organise a Review Meeting as per Paragraph 9. At the occasion of this
      Review, if the Achieved Dispatch Reliability is confirmed and agreed by
      the Buyer and the Seller as below the Guaranteed Dispatch Reliability, the
      Seller will continue to make Recommendations in order to improve the
      Dispatch Reliability of the Buyer's fleet for the following year. These
      Buyer's and Seller's obligations will set in force until the Achieved
      Dispatch Reliability is above the Guaranteed Dispatch Reliability and for
      a period not exceeding [...***...] from delivery of the first (1st)
      Aircraft to the Buyer.

3.    DEFINITIONS

3.1   ACHIEVED DISPATCH RELIABILITY

      The "Achieved Dispatch Reliability" is the actual dispatch reliability
      obtained by the Buyer's Aircraft fleet in regular Scheduled Revenue Flight
      service adjusted in accordance with the clauses of this Guarantee.

***Confidential Treatment Requested

      AWE/USA--A350                                                     LA 13-2
                           PRIVILEGED AND CONFIDENTIAL
<PAGE>

      Achieved Dispatch Reliability will be calculated for each Computation
      Period, expressed as a percentage, as follows:

      [...***...]

3.2   AIRCRAFT INHERENT MALFUNCTION

      An "Aircraft Inherent Malfunction" is a condition whereby maintenance
      actions confirm that the operation of a system or component is outside the
      specified limitations: a) as defined in the applicable Maintenance or
      Operations Manual(s), and/or b) has not been induced by a secondary cause
      or as a consequence of an Excluded Event as defined in paragraph 5.

3.3   CHARGEABLE EVENT

      Under this Guarantee a "Chargeable Event" is a Chargeable Delay or
      Chargeable Cancellation or Chargeable Return to Gate as defined hereunder.
      If analysis of substantiating data determines that the primary reason(s)
      for any Chargeable Event are not due to an Aircraft Inherent Malfunction
      or are due to an Excluded Event, such Chargeable Delay or Chargeable
      Cancellation shall not constitute a Chargeable Event.

      3.3.1 A "Chargeable Delay" occurs when a confirmed Aircraft Inherent
      Malfunction directly results in an originating Scheduled Revenue Flight to
      be Dispatched more than [...***...] later than the scheduled time
      of departure.

      3.3.2 A "Chargeable Return to Gate" occurs when the Aircraft, after being
      Dispatched returns to the parking position or gate, including a return to
      takeoff initiation (ground turn-back) or after takeoff initiation (aborted
      takeoff).

      3.3.3 A "Chargeable Cancellation" occurs when a Scheduled Revenue Flight
      cannot take place as a direct result of a confirmed Aircraft Inherent
      Malfunction. Cancellation of any or all of the flight legs of a multi-leg
      flight if related to a Chargeable Event, constitutes and is counted as one
      Chargeable Event only.

3.4   COMMENCEMENT DATE

      The "Commencement Date" is the [...***...] following the month of delivery
      of the first Aircraft to the Buyer.

3.5   COMPUTATION PERIOD

      For the guarantee Duration each "Computation Period" consists of
      [...***...], the first to run from the commencement date to the
      [...***...] of the delivery date of the first Aircraft to the Buyer. Each
      subsequent Computation Period to run consecutively thereafter.

      ***Confidential Treatment Requested
      AWE/USA--A350                                                     LA 13-3
                           PRIVILEGED AND CONFIDENTIAL
<PAGE>

3.6   DISPATCHED

      Once an Aircraft has left the gate or stand for a Scheduled Revenue Flight
      it shall be deemed to have been "Dispatched", except as provided for in
      paragraph 3.3 above.

3.7   SCHEDULED REVENUE FLIGHT

      A "Scheduled Revenue Flight" is one originating flight operated by the
      Buyer using the Buyer's Aircraft delivered under the Agreement, available
      to be Dispatched prior to the original scheduled time of departure as
      stipulated:

      a) in the Buyer's timetable, as a scheduled flight, and/or

      b) in advance by the Buyer, as a charter flight.

4.    GUARANTEE

4.1   GUARANTEED DISPATCH RELIABILITY

      The "Guaranteed Dispatch Reliability" exclusively relating to this
      Guarantee is solely as defined herein and provided in lieu of any and all
      other guarantees relating to Dispatch Reliability of any nature that may
      be stated, referenced or incorporated in any other document related to the
      Agreement.

      4.1.1 Guaranteed Dispatch Reliability [...***...]

      The Seller guarantees that from the Commencement Date to the end of the
      [...***...] of Schedule Revenue Flight operation, on average, an Aircraft
      available to be Dispatched will have a [...***...] probability of being
      Dispatched without a Chargeable Event.

      4.1.2 Guaranteed Dispatch Reliability

      The Seller guarantees that, for the [...***...] of Schedule Revenue Flight
      operation, on average, an Aircraft available to be Dispatched will have a
      [...***...] probability of being Dispatched without a Chargeable Event.

4.2   SUSPENSION OF GUARANTEE

      The provisions of this Guarantee shall not apply for any Computation
      Period during which:

      [...***...]

      where :

      [...***...]

      ***Confidential Treatment Requested
      AWE/USA--A350                                                     LA 13-4
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

      [...***...]

4.3   [...***...]

5.    EXCLUSIONS

      Delays and/or cancellations due to any of the causes below are
      specifically excluded from this Guarantee, similarly if the Aircraft is
      consequently subject to a Chargeable Event. An "Excluded Event" is a delay
      or cancellation due to:

      a) Acts of third party

      b) Aircraft damage due to external forces such as lightning strikes, force
      majeure, personnel error or by passengers, etc.

      c) Buyer Furnished Equipment (BFE) or software embodied therein.

      d) Late arrival of the Aircraft, resulting in insufficient ground time for
      the Aircraft to be Dispatched at the scheduled departure time.

      e) Maintenance Staff untimely request and/or unavailability. Late call by
      flight crew and/or late arrival of maintenance staff at the Aircraft to
      assist in returning the Aircraft to Scheduled Revenue Flight condition
      resulting in the Aircraft being unable to be Dispatched within fifteen
      (15) minutes.

      f) MMEL Items. Delays or cancellations due to any reason designated as
      "Go" or "Go If" in the FAA approved Master Minimum Equipment List (MMEL)
      for the Buyer's Aircraft.

      g) Normal Wear Maintenance.

      - Decals / paint / appearance items

      -  Brakes and/or tires - worn beyond limits or imbalanced replacement

      -  Passenger amenity items.

      h) Non-Schedule Revenue Flights

      -  Delays and cancellations relating to flights outside the definition of
         Schedule Revenue Flights in paragraph 3.7 above, including
         substitutions or aircraft swap made after the stipulated scheduled time
         of departure has elapsed.

      i) Precautionary Maintenance (No corrective Maintenance required)

      -  Doors - manual closing or cycling of passenger / crew / cargo doors

      -  Fluid leaks - within specified limits contained in applicable
         maintenance manual

      -  Placard - installing / continuing

      -  System(s) reset by resetting circuit breakers, switches or power
         supply.

***Confidential Treatment Requested

 AWE/USA--A350                                                     LA 13-5
                           PRIVILEGED AND CONFIDENTIAL
<PAGE>

      j) Propulsion Systems.

      Delays or cancellations attributable to the propulsion systems (ATA 70 to
      80).

      k) Scheduled Maintenance Activities. Late release from scheduled / planned
      maintenance work content and set-ups.

      l) Servicing (No corrective maintenance required)

            All servicing activities where no physical adjustment or replacement
      or corrective action is required to enable deferral of a repair and/or
      replacement of hardware/software in order to prevent a Chargeable Event

      - Data loading or Printer paper replacement

      - De-icing

      - Fuelling related

      - Hydraulic fluid

      - Oil or lubrication

      - Moisture or condensation

      - Oxygen servicing

      - Routine cleaning

      - Sanitizing / flushing or water / waste

      - Struts

      - Tire pressure servicing

      m) Spare Parts Unavailability. Delays or cancellations due to
      unavailability of the spare parts, unless such unavailability is caused by
      the Seller.

      n) Subsequent delay(s) and/or cancellation(s). Subsequent to a primary
      Chargeable Event, the primary and related subsequent Chargeable Event(s)
      resulting from the same Aircraft Inherent Malfunction root cause shall be
      counted as one Chargeable Event.

6.    REPORTING

      a) The Buyer agrees to implement a Dispatch Reliability reporting
      procedure to be mutually agreed upon between the Buyer and the Seller's
      specialists not later than [...***...] prior to delivery of the first
      Aircraft to the Buyer.

      b) In order to allow the Seller to assess the Aircraft Inherent
      Malfunctions the Buyer shall regularly submit Chargeable Event Data for
      each "Reporting Period", monthly, not later than [...***...] after a
      reporting month.

      c) All relevant data reported by the Buyer to the Seller under this letter
      agreement shall be in English. Such Chargeable Event "Data" must be
      accurate and detailed, to the extent ascertainable, including as a minimum
      but not limited to:

      - Affected Aircraft MSN or registration

      - Aircraft log book entries

      - ATA chapter reference

      - Date of the delay or cancellation event

      - Delay duration due to Aircraft Inherent Malfunction

      - Departure station where the event occurred

      - Detailed description, including timing, of the event

      - Maintenance reports

      - Pilots reports

      - Technical log reports

      ***Confidential Treatment Requested
      AWE/USA--A350                                                     LA 13-6
                           PRIVILEGED AND CONFIDENTIAL

<PAGE>

      - The number of actual Scheduled Revenue Flights for each Reporting Period

      - AIRMAN data

      If the Seller finds such data to be insufficiently detailed or
      unsubstantiated, the Buyer shall supply additional data as the Seller may
      reasonably request.

      d) The Buyer will notify the Seller if the Achieved Dispatch Reliability
      is below the Guaranteed Dispatch Reliability, not later than [...***...]
      after the end of a Computation Period. In such event, all detailed,
      substantiating operational and engineering information shall be provided
      by the Buyer in order to assist the Seller to determine the necessary
      action.

7.    BUYER'S AND SELLER'S OBLIGATIONS

7.1   BUYER'S OBLIGATIONS

      For the guarantee Duration, the Buyer shall:

      a) Use reasonable efforts to apply maintenance and trouble shooting
      procedures by qualified personnel with the objective of achieving the
      Guaranteed Dispatch Reliability.

      b) Incorporate modifications, procedures, initiatives and recommendations
      ("Recommendations") made by the Seller in order to increase the Buyer's
      Aircraft Achieved Dispatch Reliability [...***...].

      c) [...***...]

      d) Set the Buyer's Aircraft fleet technical Dispatch Reliability targets,
      as shown in the Buyer's regular Reliability Report (or equivalent), at a
      level equal to or greater than the Guaranteed Dispatch Reliability so that
      both the Buyer's and Seller's technical staff aggressively pursue
      attainment of the Guaranteed Dispatch Reliability.

      e) Use reasonable efforts to implement the recommendations made by the
      Seller following a "Best Industry Practices" (BIP) or similar review by
      the Seller of the Buyer's operations and organisational structure, with
      the objective of exceeding the Guaranteed Dispatch Reliability.

      f) Use AIRMAN or equivalent, with the objective of exceeding the
      Guaranteed Dispatch Reliability.

7.2   SELLER'S OBLIGATIONS

      For the guarantee Duration the Seller shall:

      a) Provide technical and operational analyses of all delays and
         cancellations including Chargeable Events.

      b) Hold regular Review Meetings with the Buyer to address additional level
         of support and action as necessary.

      c) Following reporting from the Buyer that the Achieved Dispatch
         Reliability is below the Guaranteed Dispatch Reliability, jointly with
         the Buyer review and compare the Achieved

***Confidential Treatment Requested

      AWE/USA--A350                                                     LA 13-7
                           PRIVILEGED AND CONFIDENTIAL
<PAGE>

         Dispatch Reliability to the Guaranteed Dispatch Reliability.

      d) If the Achieved Dispatch Reliability is confirmed and agreed by the
         Buyer and the Seller as below the Guaranteed Dispatch Reliability,
         where practicable not later than [...***...] after Reporting by the
         Buyer, to improve the Achieved Dispatch Reliability and at no charge to
         the Buyer, the Seller shall:

         [...***...]

8.    ADJUSTMENT

      8.1 Notwithstanding the Buyer's Obligations in paragraph 7.1 above, the
      Buyer may decline to incorporate such Recommendations referred to. Should
      the Buyer so decline, the Seller has the right to make adjustment to the
      Guaranteed Dispatch Reliability by an amount consistent with the expected
      improvement in the Achieved Dispatch Reliability, based on reasonable
      substantiation by the Seller and, if available, on the Seller's experience
      with other operators.

      8.2 Any design, certification, regulatory, organizational structure or
      Aircraft operational changes outside the Seller's control that may have an
      effect upon the operation and dispatch characteristics of the Aircraft
      shall be cause for re-evaluation and/or adjustment of the Guaranteed
      Dispatch Reliability by the Seller.

9.    REVIEW MEETINGS

      Dispatch Reliability "Review Meetings" shall be scheduled at the end of
      each [...***...] period of the Buyer's Aircraft operation or,
      exceptionally, at any other time by mutual agreement of the Seller and the
      Buyer. Representatives of the Seller and the Buyer shall participate in
      such a review meeting and shall:

      a) Review Achieved Dispatch Reliability of the Buyer's Aircraft fleet and
      all related Data.

      b) Eliminate unsupported or non Aircraft Inherent Malfunction Chargeable
      Events or Excluded Events to compute Achieved Dispatch Reliability.

      c) Review the Buyer's incorporation of Recommendations as described in
      paragraph 7.1.

      d) Review requirements for adjustment, as above, of the Guaranteed
      Dispatch Reliability.

10.   LIABILITY LIMITATION

      10.1 The Seller's liability under this Dispatch Reliability Guarantee
      shall be governed solely by the terms and conditions of this Guarantee.

      10.2 The Buyer and the Seller recognize and agree that the Exclusivity of
      Warranties and General Limitations of Liability provisions contained in
      Clause 12 of the Agreement shall apply to the foregoing Dispatch
      Reliability Guarantee.

***Confidential Treatment Requested

      AWE/USA--A350                                                     LA 13-8
                           PRIVILEGED AND CONFIDENTIAL
<PAGE>

11.   NEGOTIATED AGREEMENT

      THE BUYER AND THE SELLER AGREE THAT THIS LETTER AGREEMENT HAS BEEN THE
      SUBJECT OF DISCUSSIONS AND NEGOTIATION BY THE PARTIES AND THAT THE OTHER
      MUTUAL AGREEMENT OF THE PARTIES SET FORTH IN THE PURCHASE AGREEMENT WERE
      ARRIVED AT IN CONSIDERATION OF, INTER ALIA, THE PROVISIONS OF THIS LETTER
      AGREEMENT.

12.   ASSIGNMENT

      In consideration of the assignment and subrogation by the Seller under
      this Letter Agreement in favor of the Buyer in respect of the Seller's
      rights against and obligations to the Manufacturer under the provisions
      quoted above, the Buyer hereby accepts such assignment and subrogation and
      agrees to be bound by all of the terms, conditions and limitations therein
      contained. The Buyer and Seller recognize and agree that all the
      provisions of Clause 12 of the Agreement, including without limitation the
      Exclusivity of Warranties and General Limitations of Liability and
      Duplicate Remedies provisions therein contained, will apply to the
      foregoing Performance Retention Guarantee.

      Except as set forth in Clause 20.2 of the Agreement, this Letter Agreement
      and the rights and obligations of the Buyers hereunder will not be
      assigned or transferred in any manner without prior written consent of the
      Seller and any attempted assignment or transfer in contravention of the
      provisions of this sentence will be void and of no force and effect.

13.   COUNTERPARTS

      This Letter Agreement may be signed in any number of separate
      counterparts. Each counterpart, when signed and delivered (including
      counterparts delivered by facsimile transmission), will be an original,
      and the counterparts will together constitute one same instrument.

      AWE/USA--A350                                                     LA 13-9
                           PRIVILEGED AND CONFIDENTIAL
<PAGE>

      IN WITNESS WHEREOF, these presents were entered into as of the day and
      year first above written.

      Very truly yours,

      AVSA, S.A.R.L.

      By: __________________________
      Its:

      Accepted and Agreed

      US AIRWAYS GROUP, INC.

      By: _________________________
      Its:

      AMERICA WEST AIRLINES, Inc.

      By: _________________________
      Its:

      US AIRWAYS, INC.

      By: _________________________
      Its:

      AWE/USA--A350                                                     LA 13-10
                           PRIVILEGED AND CONFIDENTIAL

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