Document:

<PAGE>

                                                                    Exhibit 4.24

                                                                               *

================================================================================

                         TRUST INDENTURE AND MORTGAGE

                                  ([______])

                           Dated as of July 31, 2000

                                    between

                            UNITED AIR LINES, INC.,
                                     Owner

                                      and

                          STATE STREET BANK AND TRUST
                 COMPANY OF CONNECTICUT, NATIONAL ASSOCIATION

                             as Indenture Trustee

                      __________________________________

                           Equipment Notes Covering
                          One [____________] Aircraft
                    Bearing U.S. Registration No. [______]

                      ___________________________________

================================================================================
<PAGE>

                               TABLE OF CONTENTS
                               -----------------
<TABLE>
<CAPTION>
                                                                                Page
<S>                                                                             <C>
RECITALS........................................................................   1

GRANTING CLAUSE.................................................................   1

HABENDUM CLAUSE.................................................................   3

ARTICLE 1

          DEFINITIONS...........................................................   4
          Section 1.01  Definitions.............................................   4

ARTICLE 2

          THE EQUIPMENT NOTES; OTHER OBLIGATIONS................................  18
          Section 2.01  Equipment Notes; Title and Terms........................  18
          Section 2.02  Execution and Authentication............................  19
          Section 2.03  Registrar and Paying Agent..............................  19
          Section 2.04  Transfer and Exchange...................................  19
          Section 2.05  Noteholder Lists; Ownership of Equipment Notes..........  20
          Section 2.06  Mutilated, Destroyed, Lost or Stolen Equipment Notes....  21
          Section 2.07  Cancellation............................................  21
          Section 2.08  Payment on Confirmation and Equipment Notes.............  21
          Section 2.09  Termination of Interest in the Indenture Estate.........  22
          Section 2.10  Withholding Taxes.......................................  22
          Section 2.11  Subordination...........................................  23
          Section 2.12  Certain Agreements Regarding Liquidity Facilities.......  24
          Section 2.13  Payments on the Confirmation............................  26

ARTICLE 3

          RECEIPT, DISTRIBUTION AND APPLICATION OF FUNDS........................  26
          Section 3.01  Basic Distributions.....................................  26
          Section 3.02  Event of Loss; Optional Redemption......................  27
          Section 3.03  Payments After Indenture Event of Default...............  29
          Section 3.04  Certain Payments........................................  32
          Section 3.05  Other Payments..........................................  32
          Section 3.06  Payments to Owner.......................................  32
</TABLE>

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<TABLE>
<S>                                                                                                 <C>
ARTICLE 4

          COVENANTS OF OWNER....................................................................... 33
          Section 4.01  Registration, Maintenance and Operation; Possession and
                         Permitted Leases; Insignia................................................ 33
          Section 4.02  Replacement and Pooling of Parts; Alterations,
                         Modifications and Additions............................................... 38
          Section 4.03  Insurance.................................................................. 40
          Section 4.04  Inspection................................................................. 44

ARTICLE 5

          EVENT OF LOSS............................................................................ 45
          Section 5.01  (a)  Event of Loss with Respect to the Aircraft............................ 45
                        (b)  Event of Loss with Respect to an Engine............................... 48
                        (c)  Application of Payments from Governmental Authorities for Requisition
                               of Title, etc....................................................... 49
                        (d)  Requisition for Use of the Aircraft by the United States Government or
                               Government of Registry of the Aircraft.............................. 50
                        (e)  Requisition for Use of an Engine by the United States Government or
                               the Government of Registry of the Aircraft.......................... 50
                        (f)  Application of Payments During Existence of Certain Indenture
                               Defaults and Events of Default...................................... 50
          Section 5.02  Liens...................................................................... 50

ARTICLE 6

          REDEMPTION OF EQUIPMENT NOTES;
          RELEASE OF SWAP OBLIGATIONS.............................................................. 50
          Section 6.01  Redemption of Equipment Notes upon Certain Events and
                         Release of Swap Obligations............................................... 51
          Section 6.02  Notice of Redemption to Noteholders........................................ 51
          Section 6.03  Deposit of Redemption Price................................................ 52
          Section 6.04  Equipment Notes Payable on Redemption Date................................. 52

ARTICLE 7

          MATTERS CONCERNING UNCLAIMED MONIES...................................................... 52
          Section 7.01  Repayment of Monies for Equipment Note Payments Held
                         by the Indenture Trustee.................................................. 52
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                                      ii
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ARTICLE 8

          DEFAULTS AND REMEDIES.................................................................... 53
          Section 8.01  Indenture Events of Default................................................ 53
          Section 8.02  Acceleration; Rescission and Annulment..................................... 55
          Section 8.03  Other Remedies Available to Indenture Trustee.............................. 55
          Section 8.04  Waiver of Existing Defaults................................................ 58
          Section 8.05  Control by Instructing Group............................................... 58
          Section 8.06  Rights of Noteholders to Receive Payment................................... 58
          Section 8.07  Indenture Trustee May File Proofs of Claim................................. 59
          Section 8.08  Waiver of Certain Rights by Swap Counterparty and Noteholders.............. 59

ARTICLE 9

          INDENTURE TRUSTEE........................................................................ 59
          Section 9.01  Duties of Indenture Trustee................................................ 59
          Section 9.02  Rights of Indenture Trustee................................................ 59
          Section 9.03  Individual Rights of Indenture Trustee..................................... 60
          Section 9.04  Funds May Be Held by Indenture Trustee or Paying Agent;
                         Investments............................................................... 60
          Section 9.05  Notice of Defaults......................................................... 61
          Section 9.06  Compensation and Indemnity................................................. 62
          Section 9.07  Replacement of Indenture Trustee........................................... 62
          Section 9.08  Successor Indenture Trustee, Agents by Merger, etc......................... 63
          Section 9.09  Eligibility; Disqualification.............................................. 63
          Section 9.10  Trustee's Liens............................................................ 64

ARTICLE 10

          TERMINATION OF TRUST INDENTURE........................................................... 64
          Section 10.01 Termination of Trust Indenture............................................. 64
          Section 10.02 Survival of Certain Obligations............................................ 65
          Section 10.03 Monies to Be Held in Trust................................................. 65
          Section 10.04 Monies to Be Returned to Owner............................................. 65

ARTICLE 11

          AMENDMENTS AND WAIVERS................................................................... 66
          Section 11.01 Amendments to this Agreement Without Consent of the Swap
                         Counterparty or Noteholders............................................... 66
          Section 11.02 Amendments to this Agreement with Consent of Noteholders................... 67
          Section 11.03 Revocation and Effect of Consents.......................................... 68
          Section 11.04 Notation on or Exchange of Equipment Notes................................. 68
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                                      iii
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<S>                                                                                           <C>
          Section 11.05  Indenture Trustee Protected......................................... 68
          Section 11.06  Amendments, Waivers, etc. of Other Operative Documents.............. 68
          Section 11.07  Notices to Liquidity Providers...................................... 68

ARTICLE 12

          MISCELLANEOUS...................................................................... 69
          Section 12.01  Notices............................................................. 69
          Section 12.03  GOVERNING LAW....................................................... 70
          Section 12.04  Execution in Counterparts........................................... 71

SIGNATURES................................................................................... 70
</TABLE>

Exhibit A-1    Form of Series A-1, B and C-2 Equipment Notes
Exhibit A-2    Form of Series A-2 Equipment Notes
Exhibit A-3    Form of Series D Equipment Note, if any
Exhibit B-1    Description of Series A-1 Equipment Notes
Exhibit B-2    Description of Series A-2 Equipment Notes
Exhibit B-3    Description of Series B Equipment Notes
Exhibit B-4    Description of Series C-2 Equipment Notes
Exhibit B-5    Description of Series D Equipment Notes, if any
Exhibit C      Certain Economic Terms
Exhibit D      Form of Indenture Supplement
Exhibit E      Schedule of Countries Authorized for Domicile of Permitted Lessee
Exhibit F      Schedule of Countries Authorized for Aircraft Registration
Exhibit G      Schedule of Swap Termination Amounts
Exhibit H      Confirmation

                                      iv
<PAGE>

                    TRUST INDENTURE AND MORTGAGE ([______])

          This TRUST INDENTURE AND MORTGAGE ([______]) dated as of July 31, 2000
is between UNITED AIR LINES, INC., a Delaware corporation ("Owner"), and STATE
STREET BANK AND TRUST COMPANY OF CONNECTICUT, NATIONAL ASSOCIATION, a national
banking association, as Indenture Trustee hereunder (the "Indenture Trustee").

                             W I T N E S S E T H:
                             -------------------

          WHEREAS, all capitalized terms used and not otherwise defined herein
shall have the respective meanings set forth or referred to in Article 1 hereof;

          WHEREAS, the parties desire by this Agreement, among other things, (i)
to provide for the issuance by the Owner of the Equipment Notes, (ii) to
facilitate the Owner entering into the Confirmation and to provide for the
payment of the Owner's obligations under the Confirmation up to a maximum amount
as set forth in Exhibit C to this Agreement, and (iii) to provide for the
assignment, mortgage and pledge by the Owner to the Indenture Trustee, as part
of the Indenture Estate hereunder, among other things, of certain of the Owner's
right, title and interest in and to the Aircraft and certain payments and other
amounts received hereunder or thereunder in accordance with the terms hereof, as
security for, among other things, the Owner's obligations in respect of the
Equipment Notes and its obligations to the Swap Counterparty under the
Confirmation subject, in each case, to Section 2.11 and Article 3 hereof;

          WHEREAS, all things have been done to make the Equipment Notes, when
executed by the Owner and authenticated and delivered by the Indenture Trustee
hereunder, the valid, binding and enforceable obligations of the Owner;

          WHEREAS, all things have been done to make the Confirmation, when
executed by the Owner and the Swap Counterparty, the valid, binding and
enforceable obligation of the Owner; and

          WHEREAS, all things necessary to make this Agreement the legal, valid
and binding obligation of the Owner and the Indenture Trustee, for the uses and
purposes herein set forth, in accordance with its terms, have been done and
performed and have happened;

                                GRANTING CLAUSE

          NOW, THEREFORE, THIS TRUST INDENTURE AND MORTGAGE WITNESSETH, that, to
secure (a) the prompt payment of the principal of, Make-Whole Amount, if any,
and interest on, and all other amounts due with respect to, all Equipment Notes
from time to time outstanding hereunder, all other amounts due hereunder and to
secure the performance and observance by the Owner of all the agreements,
covenants and provisions contained herein and in the other Operative Documents
to which it is a party, for the benefit of the Noteholders and each of the
Indenture Indemnitees and the prompt payment of any and all amounts from time to
time owing hereunder and under the Participation Agreement by the Owner to the
Noteholders and the Indenture Indemnitees and (b) the prompt payment and
performance by Owner of all of its obligations under the Confirmation (the
obligations specified in (a) and (b) above being
<PAGE>

                                       [Trust Indenture and Mortgage ([______])]

collectively referred to herein as the "Secured Obligations") and for the uses
and purposes and subject to the terms and provisions hereof, and in
consideration of the premises and of the covenants herein contained, and of the
acceptance of the Equipment Notes by the Noteholders, and of other good and
valuable consideration the receipt and adequacy whereof are hereby acknowledged,
the Owner has granted, bargained, sold, assigned, transferred, conveyed,
mortgaged, pledged and confirmed, and does hereby grant, bargain, sell, assign,
transfer, convey, mortgage, pledge and confirm, unto the Indenture Trustee, its
successors and assigns, for the security and benefit of the Noteholders, the
Swap Counterparty and each of the other Indenture Indemnitees from time to time,
a first priority security interest in and first priority mortgage lien on all
estate, right, title and interest of the Owner in, to and under the following
described property, rights, interests and privileges whether now or hereafter
acquired and subject to the Lien hereof (which collectively, including all
property hereafter specifically subjected to the lien of this Agreement by any
instrument supplemental hereto, are herein called the "Indenture Estate"):

          (1)  the Airframe and Engines (each such Engine having 750 or more
     rated take-off horsepower or the equivalent thereof) as the same is now and
     will hereafter be constituted, whether now or hereafter acquired and
     subjected to the Lien hereof, and in the case of such Engines, whether or
     not any such Engine shall be installed in or attached to the Airframe or
     any other airframe and all substitutions or replacements therefor, as
     provided in this Agreement, together with all Parts of whatever nature
     which are from time to time included in the "Airframe" or the "Engines",
     whether now or hereafter acquired and subjected to the Lien hereof, and all
     renewals, substitutions, replacements, additions, improvements, accessories
     and accumulations with respect to any of the foregoing, and all records,
     logs and other related materials with respect to any of the foregoing as
     may be required to be maintained by the FAA;

          (2)  The Purchase Agreement (to the extent specified in the Purchase
     Agreement Assignment), the Consents and Agreements, and the Bills of Sale,
     together in each case with all rights, powers, privileges, options and
     other benefits of the Owner thereunder (subject to such reservation) with
     respect to the Airframe or the Engines, including, without limitation, the
     right to make all waivers and agreements, to give and receive all notices
     and other instruments or communications, to take such action upon the
     occurrence of a default thereunder, including the commencement, conduct and
     consummation of legal, administrative or other proceedings, as shall be
     permitted thereby or by law, and to do any and all other things which the
     Owner is or may be entitled to do thereunder (subject to such reservation),
     subject to the terms and conditions of the Purchase Agreement Assignment;

          (3)  without limiting the generality of the foregoing, all requisition
     proceeds with respect to the Aircraft or any Part thereof or any other
     property described in any of the Granting Clauses and all insurance
     proceeds with respect to the Aircraft or any Part thereof or any other
     property described in any of the Granting Clauses from insurance required
     to be maintained by the Owner under Section 4.03, but excluding any
     liability insurance in favor of the Owner or any other insured party and
     any insurance maintained

                                       2
<PAGE>

                                       [Trust Indenture and Mortgage ([______])]

     by the Owner and not required under Section 4.03 and all proceeds from the
     sale or disposition of the Aircraft or any other property described in
     these Granting Clauses;

          (4)  all rents, revenues and other proceeds collected by the Indenture
     Trustee pursuant to Section 8.03 and all moneys and securities now or
     hereafter paid or deposited or required to be paid or deposited to or with
     the Indenture Trustee by or for the account of the Owner pursuant to any
     term of any Operative Document and held or required to be held by the
     Indenture Trustee hereunder; and

          (5)  all proceeds of the foregoing.

          PROVIDED, HOWEVER, that notwithstanding any of the foregoing
provisions, so long as no Indenture Event of Default shall have occurred and be
continuing, (a) the Indenture Trustee shall not take or cause to be taken any
action contrary to the Owner's right hereunder to quiet enjoyment of the
Airframe and Engines, and to possess, use, retain and control the Airframe and
Engines and all revenues, income and profits derived therefrom, and (b) the
Owner shall have the right, to the exclusion of the Indenture Trustee, with
respect to the Purchase Agreement, to exercise in the Owner's name all rights
and powers of the buyer under the Purchase Agreement (other than to amend,
modify or waive any of the warranties or indemnities contained therein, except
in the exercise of the Owner's reasonable business judgment) and to retain any
recovery or benefit resulting from the enforcement of any warranty or indemnity
under the Purchase Agreement; and provided, further, that, notwithstanding the
occurrence or continuation of an Indenture Event of Default, the Indenture
Trustee shall not enter into any amendment of the Purchase Agreement which would
increase the obligations of the Owner thereunder or in any way affect the right
and interest of Owner under the Purchase Agreement to the extent not assigned
hereunder.

                                HABENDUM CLAUSE

          TO HAVE AND TO HOLD all and singular the aforesaid property unto the
Indenture Trustee, its successors and assigns, in trust for the benefit and
security of the Indenture Trustee, the Noteholders and the Swap Counterparty
from time to time, except as provided in Section 2.11 and Article 3 hereof,
without, in the case of the Noteholders, any preference, distinction or priority
of any one Equipment Note over any other by reason of series, priority of time
of issue, sale, negotiation, date of maturity thereof or otherwise for any
reason whatsoever, and for the uses and purposes and  subject to the terms and
provisions set forth in this Agreement.

          1.   It is expressly agreed that anything herein contained to the
contrary notwithstanding, the Owner shall remain liable under each of the
Operative Documents to which it is a party to perform all of the obligations
assumed by it thereunder, all in accordance with and pursuant to the terms and
provisions thereof, and the Indenture Trustee and the Noteholders shall have no
obligation or liability under any of the Operative Documents to which the Owner
is a party by reason of or arising out of the assignment hereunder, nor shall
the Indenture Trustee or the Noteholders be required or obligated in any manner
to perform or fulfill any obligations of the Owner under any of the Operative
Documents to which the Owner is a party, or, except as

                                       3
<PAGE>

                                       [Trust Indenture and Mortgage ([______])]

herein expressly provided, to make any payment, or to make any inquiry as to the
nature or sufficiency of any payment received by it, or present or file any
claim, or take any action to collect or enforce the payment of any amounts which
may have been assigned to it or to which it may be entitled at any time or
times.

          2.   The Owner does hereby constitute the Indenture Trustee the true
and lawful attorney of the Owner, irrevocably, for good and valuable
consideration and coupled with an interest and with full power of substitution
with full power (in the name of the Owner or otherwise) subject to the terms and
conditions of this Agreement, to ask, require, demand, receive, sue for,
compound and give acquittance for any and all moneys and claims for moneys due
and to become due to the Owner under or arising out of the Indenture Estate, to
endorse any checks or other instruments or orders in connection therewith, to
file any claims or take any action or institute any proceedings which the
Indenture Trustee may deem to be necessary or advisable in the premises as fully
as the Owner itself could do; provided that the Indenture Trustee shall not
exercise any such rights except upon the occurrence and during the continuance
of an Event of Default hereunder.

          3.   The Owner agrees that at any time and from time to time, upon the
written request of the Indenture Trustee, the Owner will promptly and duly
execute and deliver or cause to be duly executed and delivered any and all such
further instruments and documents as the Indenture Trustee may reasonably deem
desirable in obtaining the full benefits of the assignment hereunder and of the
rights and powers herein granted.

          4.   The Owner does hereby warrant and represent that it has not
assigned or pledged, and hereby covenants that it will not assign or pledge, so
long as the Lien of this Indenture has not been discharged in accordance with
the terms hereof, any of its rights, titles or interests hereby assigned to any
Person other than the Indenture Trustee.

          5.   It is hereby further agreed that any and all property described
or referred to in the granting clause hereof which is hereafter acquired by the
Owner shall ipso facto, and without any other conveyance, assignment or act on
            ---- -----
the part of the Owner or the Indenture Trustee, become and be subject to the
Lien herein granted as fully and completely as though specifically described
herein.

          IT IS HEREBY FURTHER COVENANTED AND AGREED by and among the parties
hereto as follows:

                                   ARTICLE 1

                                       4
<PAGE>

                                       [Trust Indenture and Mortgage ([______])]

                                  DEFINITIONS

          Section 1.01  Definitions.  (a) For all purposes of this Agreement and
                        -----------
the other Operative Documents, except as otherwise expressly provided or unless
the context otherwise requires:

          (1)  each of "Owner," "Indenture Trustee," "Noteholder," "Pass Through
     Trustee," "Subordination Agent," "Liquidity Provider," "Swap Counterparty"
     or any other Person includes, without prejudice to the provisions of any
     Operative Documents, any successor in interest to it and any permitted
     transferee, permitted purchaser or permitted assignee of it;

          (2)  the terms defined in this Article 1 have the meanings assigned to
     them in this Article 1, and include the plural as well as the singular;

          (3)  all accounting terms not otherwise defined herein have the
     meanings assigned to them in accordance with generally accepted accounting
     principles in the United States;

          (4)  the words "herein", "hereof" and "hereunder" and other words of
     similar import refer to this Agreement as a whole and not to any particular
     Article, Section or other subdivision; and

          (5)  all references in this Agreement to Articles, Sections and
     Exhibits refer to Articles, Sections and Exhibits of this Agreement.

          (b)  For all purposes of this Agreement, the following capitalized
terms have the following respective meanings:

          "Acceptable Alternate Engine" means an International Aero Engine Model
           ---------------------------
IAE2527-A5 engine or an engine of the same or another manufacturer of equivalent
or greater value and utility (without regard to hours or cycles) as the replaced
or substituted Engine (assuming such Engine was in the condition required by the
terms of this Agreement), and suitable for installation and use on the Airframe;
provided that such engine shall (i) be of the same make, model and manufacturer
as the other engine installed on the Airframe and (ii) be an engine of a type
then being utilized by Owner on other [_________] aircraft operated by Owner.

          "Additional Insured" means the Indenture Trustee, Owner in its
           ------------------
capacity as lessor under any Permitted Lease, the Subordination Agent (so long
as it is  the registered holder of any Equipment Note on behalf of the Pass
Through Trustees), each Pass Through Trustee (so long as it is a Noteholder),
each Liquidity Provider, the Swap Counterparty and each of their respective
Affiliates, successors and permitted assigns, and the respective directors,
officers and employees of each of the foregoing.

          "AFE Indenture" means the indenture dated as of July 31, 2000 between
           -------------
AFE Trust and State Street, as Indenture Trustee.

                                       5
<PAGE>

                                       [Trust Indenture and Mortgage ([______])]

          "AFE Trust" means AFE Trust, a Delaware business trust.
           ---------

          "Affiliate" with respect to a specified Person, means any other Person
           ---------
directly or indirectly controlling or controlled by or under direct or indirect
common control with such Person.  For the purposes of this definition, "control"
when used with respect to any specified Person, means the power to direct the
management and policies of such Person, directly or indirectly, whether through
the ownership of voting securities, by contract or otherwise, and the terms
"controlling" and "controlled" have meanings correlative to the foregoing.

          "Agent" means any Paying Agent or Registrar.
           -----

          "Aircraft" means the Airframe together with the two Engines whether or
           --------
not such Engines are installed on the Airframe or any other airframe.

          "Airframe" means:  (i) the [__________] aircraft (excluding Engines or
           --------
engines from time to time installed thereon) specified by United States
Registration Number and Manufacturer's serial number in the initial Indenture
Supplement; (ii) any Replacement Airframe which may from time to time be
substituted pursuant to Section 5.01(a)(ii) hereof and (iii) in either case any
and all Parts which are from time to time incorporated or installed in or
attached thereto or which have been removed therefrom, unless the Lien of this
Agreement shall not be applicable to such Part in accordance with Section 4.02.

          "Amortization Amount" means, with respect to any Equipment Note, as of
           -------------------
any Payment Date, the amount determined by multiplying the percentage set forth
opposite such Payment Date on the Amortization Schedule by the original
principal amount of such Equipment Note.

          "Amortization Schedule" means, with respect to each Series of
           ---------------------
Equipment Notes, the amortization schedule for such Series as set forth on
Exhibit B-1, B-2, B-3, B-4 or if Series D Equipment Notes are issued B-5, as the
case may be.

          "Appraisers" means, collectively, Aircraft Information Services, Inc.,
           ----------
Morton Beyer and Associates, Inc. and AvSolutions Inc., or such other
independent aircraft appraiser as may be acceptable to Owner and the Indenture
Trustee.

          "Average Life Date" means for each Equipment Note to be redeemed, the
           -----------------
date which follows the redemption date by a period equal to the Remaining
Weighted Average Life at the redemption date of such Secured Certificate.

          "AVSA" means, AVSA, S.A.R.L., a societe a responsabilite limitee
           ----
formed under the laws of the Republic of France.

          "Bankruptcy Code" means the United States Bankruptcy Code, Title 11 of
           ---------------
the United States Code, as amended from time to time.

                                       6
<PAGE>

                                       [Trust Indenture and Mortgage ([______])]

          "Basic Pass Through Trust Agreement" means the Pass Through Trust
           ----------------------------------
Agreement dated as of July 31, 2000 between Owner and Pass Through Trustee, but
does not include any Pass Through Trust Supplement.

          "Bills of Sale" means, collectively, the FAA Bill of Sale and the
           -------------
Warranty Bill of Sale.

          "Business Day" means any day other than a Saturday or Sunday or a day
           ------------
on which commercial banks are required or authorized to close in: Chicago,
Illinois; New York, New York; and, so long as any Equipment Note is outstanding,
the city and state in which the Indenture Trustee, the Subordination Agent or
any Pass Through Trustee has its principal place of business or receives and
disburses funds.

          "Certificated Air Carrier" means a Citizen of the United States
           ------------------------
holding an air carrier operating certificate issued by the Secretary of
Transportation pursuant to Chapter 447 of Title 49 of the United States Code,
for aircraft capable of carrying ten or more individuals or 6,000 pounds or more
of cargo or that otherwise is certified or registered to the extent required to
fall within the purview of 11 U.S.C. Section 1110 or any analogous successor
provision of the Bankruptcy Code.

          "Citizen of the United States" has the meaning given such term in
           ----------------------------
Section 40102(a)(15) of Title 49 of the United States Code.

          "Closing" means the closing of the transactions contemplated by the
           -------
Participation Agreement.

          "Closing Date" means the date on which the Closing occurs.
           ------------

          "Code" means the Internal Revenue Code of 1986, as amended through the
           ----
Closing Date.

          "Confirmation" means the Confirmation, dated the Closing Date, between
           ------------
the Swap Counterparty and the Swap Provider, evidencing the Transaction relating
to the Aircraft and incorporating therein the terms and conditions of the Swap
Agreement.

          "Consents and Agreements" means (a) the Manufacturer Consent and
           -----------------------
Agreement ([______]) dated as of the date hereof executed by the Manufacturer
and (b) the Supplier Consent and Agreement ([______]) dated as of the date
hereof executed by AVSA.

          "Co-Registrar" shall have the meaning specified therefor in Section
           ------------
2.03.

          "Corporate Trust Department" means the principal office of the
           --------------------------
Indenture Trustee located at the Indenture Trustee's address for notices under
the Participation Agreement or such other office at which the Indenture
Trustee's corporate trust business shall be administered which the Indenture
Trustee shall have specified by notice in writing to Owner and each Noteholder.

                                       7
<PAGE>

                                       [Trust Indenture and Mortgage ([______])]

          "Debt Rate" means, with respect to any Series of Equipment Notes, the
           ---------
rate per annum specified for such Series under the heading "Interest Rate" in
the related Exhibit B for such Series.

          "Eligible Institution" means (a) the corporate trust department of the
           --------------------
Indenture Trustee, the Subordination Agent or any Pass Through Trustee, as
applicable, or (b) a depository institution organized under the laws of the
United States of America or any one of the States thereof or the District of
Columbia (or any U.S. branch of a foreign bank), which has a long-term unsecured
debt rating from Moody's and Standard & Poor's of at least "A-3" or its
equivalent.

          "Engine" means (i) each of the two [___________] Model [_________]
           ------
engines listed by manufacturer's serial numbers in the initial Indenture
Supplement, whether or not from time to time installed on such Airframe or any
other airframe; (ii) any Replacement Engine which may from time to time be
substituted for any of such two engines pursuant to the terms hereof; and (iii)
in either case, any and all Parts which are from time to time incorporated or
installed in or attached to any such engine and any and all Parts removed
therefrom unless the Lien of this Agreement shall not apply to such Parts in
accordance with Section 4.02.

          "Equipment Note" or "Equipment Notes" means any equipment note or
           --------------      ---------------
notes issued under this Agreement, including each of the Series A-1, Series A-2,
Series B, Series C-2 and if Series D Equipment Notes are issued, Series D
Equipment Notes issued hereunder, substantially in the form of Exhibit A-1, A-2
or A-3, as applicable, hereto as such form may be varied pursuant to the terms
hereof and any and all Equipment Notes issued in replacement or exchange
therefor in accordance with the provisions hereof.

          "Event of Loss" with respect to the Aircraft, Airframe or any Engine
           -------------
means any of the following events with respect to such property:  (i) the loss
of such property or of the use thereof due to the destruction of or damage to
such property which renders repair uneconomic or which renders such property
permanently unfit for normal use by Owner for any reason whatsoever; (ii) any
damage to such property which results in an insurance settlement with respect to
such property on the basis of a total loss, or a constructive or compromised
total loss; (iii) the theft or disappearance of such property, or the
confiscation, condemnation, or seizure of, or requisition of title to, or use
of, such property by any governmental or purported governmental authority (other
than a requisition for use by the U.S. Government or any government of registry
of the Aircraft or any agency or instrumentality thereof), which in the case of
any event referred to in this clause (iii) shall have resulted in the loss of
title or possession of such property by Owner for a period in excess of 180
consecutive days; (iv) as a result of any law, rule, regulation, order or other
action by the FAA or other governmental body of the government of registry of
the Aircraft having jurisdiction, use of such property in the normal course of
the business of air transportation shall have been prohibited for a period in
excess of 180 consecutive days, unless Owner, prior to the expiration of such
180-day period, shall have undertaken and shall be diligently carrying forward,
in a manner that does not discriminate against the Aircraft, all steps which are
necessary or desirable to permit the normal use of such property by Owner, and
Owner, within two years from the time of grounding, shall have conformed at
least one such aircraft in its fleet to the requirements of any such law, rule,
regulation, order or other action and commenced regular commercial use of the
same in such jurisdiction; (v) the requisition for use

                                       8
<PAGE>

                                       [Trust Indenture and Mortgage ([______])]

by any government of registry of the Aircraft (other than the U.S. government)
or any instrumentality or agency thereof, which shall have occurred during the
Term and shall have continued for more than two years; and (vi) any divestiture
of title to an Engine treated as an Event of Loss pursuant to Section 5.02
hereof. An Event of Loss with respect to the Aircraft shall be deemed to have
occurred if an Event of Loss occurs with respect to the Airframe.

          "Expenses" means any and all liabilities, obligations, losses,
           --------
damages, penalties, claims (including, but not limited to, negligence, strict or
absolute liability, liability in tort and liabilities arising out of the
violations of laws or regulatory requirements of any kind), actions, suits,
costs, expenses and disbursements (including reasonable legal fees and
expenses).

          "FAA Bill of Sale" means an FAA AC Form 8050-2 bill of sale executed
           ----------------
by AVSA in favor of Owner and dated the date of delivery of the Aircraft from
AVSA to Owner pursuant to the terms of the Purchase Agreement.

          "Federal Aviation Act" means part A of subtitle VII of title 49,
           --------------------
United States Code.

          "Federal Aviation Administration" and "FAA" mean the United States
           -------------------------------       ---
Federal Aviation Administration and any successor agency or agencies thereto.

          "Fundamental Documents" means, collectively, the Operative Documents
           ---------------------
and the Pass Through Documents.

          "Indemnitee" means (i) State Street and the Indenture Trustee and each
           ----------
separate or additional trustee appointed pursuant to this Agreement, (ii) the
Subordination Agent, (iii) the Paying Agent, (iv) each Pass Through Trustee, (v)
each Liquidity Provider, (vi) each Noteholder, and (vii) the Swap Counterparty,
and, in each case, each of their respective affiliates, successors and permitted
assigns and each of their respective directors, officers, employees, agents and
servants.

          "Indenture Default" means any event which is, or after notice or
           -----------------
passage of time, or both, would be, an Indenture Event of Default.

          "Indenture Estate" shall have the meaning specified therefor in the
           ----------------
Granting Clause hereof.

          "Indenture Event of Default" shall have the meaning specified therefor
           --------------------------
in Article 8.

          "Indenture Indemnitee" means (i) the Indenture Trustee in its
           --------------------
individual capacity and as Indenture Trustee, (ii) each separate or additional
trustee appointed pursuant to this Agreement, (iii) the Subordination Agent,
(iv) each Liquidity Provider, (v) each Pass Through Trustee, (vi) the Swap
Counterparty, and (vii) each of the respective directors, officers, employees,
agents and servants of the persons described in clauses (i) through (vi)
inclusive above.

                                       9
<PAGE>

                                       [Trust Indenture and Mortgage ([______])]

          "Indenture Supplement" means a supplement to this Agreement in the
           --------------------
form of Exhibit D hereto.

          "Indenture Trustee" means State Street and each other Person which may
           -----------------
from time to time be acting as Indenture Trustee in accordance with the
provisions of this Agreement.

          "Instructing Group" means, so long as the Swap Provider shall have any
           -----------------
obligations under the Confirmation, the Swap Counterparty, and thereafter the
Majority in Interest of Noteholders.

          "Insured Amount" has the meaning specified therefor on Exhibit C.
           --------------

          "Intercreditor Agreement" means that certain Intercreditor Agreement
           -----------------------
among the Pass Through Trustees, the Liquidity Providers and the Subordination
Agent, dated as of July 31, 2000; provided that, for purposes of any obligation
of Owner, no amendment, modification or supplement to, or substitution or
replacement of, such Intercreditor Agreement shall be effective unless consented
to by Owner.

          "Interest Payment Date" means January 1, 2001 and each January 1 and
           ---------------------
July 1 of each year thereafter.

          "Issuance Date" means, with respect to each Series of Equipment Notes,
           -------------
the date such Equipment Notes are issued by the Owner pursuant to the terms
hereof.

          "Junior Qualified Substitute Purchase Amount" has the meaning
           -------------------------------------------
specified for such term in the Confirmation.

          "Junior Swap Termination Amount" means, on any date of determination,
           ------------------------------
the amount set forth on Exhibit G opposite the Swap Payment Date in Exhibit G
which is the same as, or which most closely follows, such date of determination.

          "Lien" means any mortgage, pledge, lien, charge, encumbrance, lease,
           ----
exercise of rights, security interest or claim.

          "Liquidity Facilities" means the three (3) Revolving Credit Agreements
           --------------------
(consisting of a separate Revolving Credit Agreement with each Liquidity
Provider with respect to each of the Class A-1 Trust, Class A-2 Trust and the
Class B Trust) between the Subordination Agent, as borrower, and a Liquidity
Provider, each dated as of July 31, 2000; provided that, for purposes of any
obligation of Owner, no amendment, modification or supplement to, or
substitution or replacement of, any such Liquidity Facility shall be effective
unless consented to by Owner.

          "Liquidity Providers" means Landesbank Hessen-Thuringen Girozentrale,
           -------------------
as the Liquidity Provider under the Class A-1 Liquidity Facility, Class A-2
Liquidity Facility and the

                                       10
<PAGE>

                                       [Trust Indenture and Mortgage ([______])]

Class B Liquidity Facility (as such terms are defined in the Intercreditor
Agreement) or any successor thereto.

          "Loss Payee Amount" has the meaning specified therefor on Exhibit C.
           -----------------

          "Loss Payment Date" shall have the meaning specified in Section
           -----------------
5.01(a).

          "Majority in Interest of Noteholders" means as of a particular date of
           -----------------------------------
determination and subject to Section 2.6 of the Intercreditor Agreement, the
holders of a majority in aggregate unpaid principal amount of all Equipment
Notes outstanding as of such date (excluding any Equipment Notes held by Owner,
Indenture Trustee or any Affiliate of any such party or any interests of Owner
therein unless all Equipment Notes shall be held by any such entity or an
Affiliate thereof); provided that for the purposes of directing any action or
casting any vote or giving any consent, waiver or instruction hereunder, any
Noteholder of an Equipment Note or Equipment Notes may allocate, in such
Noteholder's sole discretion, any fractional portion of the principal amount of
such Equipment Note or Equipment Notes in favor of or in opposition to any such
action, vote, consent, waiver or instruction.

          "Make-Whole Amount" means, with respect to each Equipment Note, an
           -----------------
amount (as determined by an independent investment banker of national standing
selected by Owner) equal to the excess, if any, determined under the following
calculation:

          (1)  the present value of the remaining scheduled payments of
               principal and interest from the determination date to maturity of
               such Equipment Note computed by discounting the payments on a
               semi-annual basis on each Payment Date (assuming a 360-day year
               of twelve 30-day months) using a discount rate equal to the
               Treasury Yield, minus

          (2)  the outstanding principal amount of such Equipment Note plus
               accrued interest to the date of determination.

For purposes of determining the Make-Whole Amount, the "Treasury Yield" means,
                                                        --------------
at the date of determination with respect to any Equipment Note, the interest
rate (expressed as a semi-annual equivalent and as a decimal and, in the case of
United States Treasury bills, converted to a bond equivalent yield) determined
to be the annual rate equal to the semi-annual yield to maturity for United
States Treasury securities maturing on the Average Life Date of such Equipment
Note and trading in the public securities markets either as determined by
interpolation between most recent weekly average yield to maturity for two
series of United States Treasury securities trading in the public securities
markets, (1) one maturing as close as possible to, but earlier than, the Average
Life Date of such Equipment Note and (2) the other maturing as close as possible
to, but later than, the Average Life Date of such Equipment Note, in each case
as published in the most recent H.15(519) or, if a weekly average yield to
maturity for United States Treasury securities maturing on the Average Life Date
of such Equipment Note is reported in the most recent H.15(519), the weekly
average yield to maturity as published in such H.15(519).  As used in the

                                       11
<PAGE>

                                       [Trust Indenture and Mortgage ([______])]

definition of "Treasury Yield", "H.15(519)" means, the weekly statistical
                                 ---------
release designated as such, or any successor publication, published by the Board
of Governors of the Federal Reserve System.  The date of determination of Make-
Whole Amount is the third (3rd) Business Day prior to the applicable payment
date.  The "most recent H.15(519)" means the H.15(519) published prior to the
            ---------------------
close of business on the third Business Day prior to the applicable payment or
redemption date.

          "Manufacturer" means [_________________], and its successors and
           ------------
assigns.

          "Minimum Liability Insurance Amount" has the meaning specified
           ----------------------------------
therefor on Exhibit C.

          "Moody's" means Moody's Investors Service, Inc. (or any successor
           -------
thereto).

          "Non-U.S. Person" means any Person other than a United States person,
           ---------------
as defined in Section 7701(a)(30) of the Code.

          "Note Purchase Agreement" has the meaning specified for the term
           -----------------------
"United Equipment Note Purchase Agreement" in the Intercreditor Agreement.

          "Noteholder" means a person in whose name an Equipment Note is
           ----------
registered on the Register (including, so long as it holds any Series A-1,
Series A-2, Series B, Series C-2 or, if Series D Equipment Notes are issued and
financed by a Pass Through Trustee, Series D Equipment Notes issued hereunder,
the Subordination Agent on behalf of the Pass Through Trustee under the
applicable Pass Through Trust Agreement pursuant to the provisions of the
Intercreditor Agreement).

          "Obsolete Parts Caps" has the meaning specified therefor on Exhibit C.
           -------------------

          "Operative Documents" means this Agreement, the Participation
           -------------------
Agreement, the Consents and Agreements, the Purchase Agreement (to the extent
assigned pursuant to the Purchase Agreement Assignment), the Purchase Agreement
Assignment, Bills of Sale, the Equipment Notes and the initial Indenture
Supplement.

          "Owner" means United Air Lines, Inc., a Delaware corporation and its
           -----
successors and permitted assigns.

          "Participation Agreement" means the Participation Agreement ([______])
           -----------------------
dated as of the date hereof among Owner, the Pass Through Trustees, the
Subordination Agent and the Indenture Trustee.

          "Parts" means all appliances, parts, components, instruments,
           -----
appurtenances, accessories, furnishings, seats and other equipment of whatever
nature (other than (a) complete

                                       12
<PAGE>

                                       [Trust Indenture and Mortgage ([______])]

Engines or engines, and (b) any Passenger Convenience Equipment), that may from
time to time be installed or incorporated in or attached or appurtenant to the
Airframe or any Engine.

          "Pass Through Certificates" means any of the credit enhanced pass
           -------------------------
through certificates  issued pursuant to any of the Pass Through Trust
Agreements.

          "Pass Through Documents" means the Pass Through Trust Agreements, the
           ----------------------
Intercreditor Agreement, the Note Purchase Agreement and the Liquidity
Facilities.

          "Pass Through Trust" means each of the A-1, A-2, B, C-2 and if Series
           ------------------
D Equipment Notes are issued and financed by a Pass Through Trustee, the D pass
through trusts created pursuant to the related Pass Through Trust Agreement.

          "Pass Through Trust Agreements" means each of the A-1, A-2, B, C-2 and
           -----------------------------
if Series D Equipment Notes are issued and financed by a Pass Through Trustee,
the D Pass Through Trust Supplements, together in each case with the Basic Pass
Through Trust Agreement, each dated as of July 31, 2000 and entered into by and
between the Owner and a Pass Through Trustee.

          "Pass Through Trust Supplement" shall have the meaning specified for
           -----------------------------
the term "Trust Supplement" in the Basic Pass Through Trust Agreement.

          "Pass Through Trustee" means State Street in its capacity as trustee
           --------------------
under each Pass Through Trust Agreement, and such other Person that may from
time to time be acting as successor trustee under any such Pass Through Trust
Agreement.

          "Passenger Convenience Equipment" means severable components or
           -------------------------------
systems installed on or affixed to the Airframe that are used to provide
individual telecommunications or electronic entertainment to passengers aboard
the Aircraft, if and for so long as such equipment shall be owned by, or shall
be subject to a security interest, license or other interest of, another Person
(other than any Affiliate of Owner) in accordance with the provisions of Section
4.02(d) hereof.

          "Past Due Rate" means, with respect to any Equipment Note, the rate
           -------------
per annum equal to 2% over the Debt Rate as in effect for such Equipment Note.

          "Paying Agent" means any Person acting as Paying Agent hereunder
           ------------
pursuant to Section 2.03.

          "Payment Date" means, with respect to each Series of Equipment Notes,
           ------------
each Payment Date listed on the Amortization Schedule for such Series of
Equipment Notes set forth in Exhibit B-1, B-2, B-3, B-4 or, if Series D
Equipment Notes are issued, B-5 as the case may be.

                                       13
<PAGE>

                                       [Trust Indenture and Mortgage ([______])]

          Periodic Swap Payment" means, on any Swap Payment Date, the amounts,
          ---------------------
if any, due from the Swap Provider to the Swap Counterparty under the
Confirmation as calculated under Schedules 1, 2 and 3 to the Confirmation.

          "Permitted Air Carrier" means any Certificated Air Carrier or any air
           ---------------------
carrier principally domiciled in a country listed on Exhibit E hereto.

          "Permitted Investment" means (a) investments in obligations of, or
           --------------------
guaranteed by, the United States Government having maturities no later than 90
days following the date of such investment; (b) investments in open market
commercial paper of any corporation incorporated under the laws of the United
States of America or any state thereof with a short-term unsecured debt rating
issued by Moody's and Standard & Poor's of at least "A-1" and "P-1,"
respectively, having maturities no later than 90 days following the date of such
investment; or (c) investments in negotiable certificates of deposit, time
deposits, banker's acceptances, commercial paper or other direct obligations of,
or obligations guaranteed by, commercial banks organized under the laws of the
United States or of any political subdivision thereof (or any U.S. branch of a
foreign bank) with issuer ratings of at least "B/C" by Thomson Bankwatch, having
maturities no later than 90 days following the date of such investment;
provided, however, that : (x) all Permitted Investments that are bank
--------  -------
obligations shall be denominated in U.S. dollars; and (y) the aggregate amount
of Permitted Investments at any one time that are bank obligations issued by any
one bank shall not be in excess of 5% of such bank's capital and surplus;
provided further that (1) any investment of the types described in clauses (a),
-------- -------                                                   ------- ---
(b) and (c) above may be made through a repurchase agreement in commercially
---     ---
reasonable form with a bank or other financial institution qualifying as an
Eligible Institution so long as such investment is held by a third party
custodian also qualifying as an Eligible Institution, (2) all such investments
set forth in clauses (a), (b) and (c) above mature no later than the Business
             ------- --- ----     ---
Day preceding the next Interest Payment Date and (3) the Indenture Trustee is
hereby authorized in making or disposing of any Permitted Investment to deal
with itself (in its individual capacity) or with any one or more of its
affiliates, whether it or such affiliates are acting as an agent of the
Indenture Trustee or for any third person or dealing as principal for its own
account; and provided further, that in the case of any Permitted Investment
             -------- -------
issued by a domestic branch of a foreign bank, the income from such investment
shall be from sources within the United States for purposes of the Code.

          "Permitted Lien" means (i) the rights of Owner as herein provided
           --------------
(including the rights of any Permitted Lessee under a Permitted Lease), and any
other rights of Owner or any other Person existing pursuant to the Operative
Documents, (ii) Liens attributable to the Indenture Trustee (both in its
capacity as trustee under this Agreement and in its individual capacity), any
Pass Through Trustee (in its individual capacity, as Noteholder and as trustee
under the Pass Through Trust Agreements), the Swap Counterparty or the
Subordination Agent (in its individual capacity, as registered holder of the
Equipment Notes on behalf of the Pass Through Trustees and as agent under the
Intercreditor Agreement), (iii) Liens for Taxes of Owner (or any Permitted
Lessee) either not yet due or being contested in good faith by appropriate
proceeding so long as such proceedings do not involve any material risk of the
sale, forfeiture or loss of the Airframe or any Engine or any interest thereon,
(iv) materialmen's, mechanics',

                                       14
<PAGE>

                                       [Trust Indenture and Mortgage ([______])]

workmen's, repairmen's, employees' or other like liens arising in the ordinary
course of Owner's or any Permitted Lessee's business securing obligations that
are not overdue for a period of more than 60 days or are being contested in good
faith by appropriate proceedings so long as during such 60-day period there is
not, or such proceedings do not involve, any material risk of the sale,
forfeiture or loss of the Airframe or any Engine or any interest therein, (v)
Liens arising out of any judgment or award against Owner (or any Permitted
Lessee), unless there exists a material risk of the sale, forfeiture or loss of
the Airframe or any Engine or any interest therein or unless the judgment
secured shall not, within 60 days after the entry thereof, have been discharged,
vacated, reversed or execution thereof stayed pending appeal or shall not have
been discharged, vacated or reversed within 60 days after the expiration of such
stay, and (vi) any other Lien with respect to which Owner (or any Permitted
Lessee) shall have provided a bond, cash collateral or other security in an
amount and under terms reasonably satisfactory to the Indenture Trustee.

          "Permitted Lease" means a lease permitted under Section 4.01(b)
           ---------------
hereof.

          "Permitted Lessee" means the lessee under a Permitted Lease.
           ----------------

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

          "Purchase Agreement" means the agreement between Owner and AVSA
           ------------------
relating to the purchase by Owner of the Aircraft, as originally executed or as
modified, amended or supplemented in accordance with the terms thereof, but only
insofar as the foregoing relates to the Aircraft.

          "Purchase Agreement Assignment" means the Purchase Agreement
           -----------------------------
Assignment dated as of the date hereof between Owner and the Indenture Trustee
assigning to the Indenture Trustee certain of Owner's rights under the Purchase
Agreement with respect to the Aircraft, as the same may be amended, modified or
supplemented.

          "Rating Agencies" has the meaning specified for such term in the
           ---------------
Intercreditor Agreement.

          "Rating Agency Confirmation" has the meaning specified for such term
           --------------------------
in the Intercreditor Agreement.

          "Record Date" for the interest or Amortization Amount payable on any
           -----------
Equipment Note on any Interest Payment Date or Payment Date (other than the
maturity date) for such Equipment Note, as the case may be, means the calendar
day (whether or not a Business Day) which is 15 calendar days prior to the
related Interest Payment Date or Payment Date.

                                       15
<PAGE>

                                  [Trust Indenture and Mortgage ([___________])]

          "Redemption Date" means the date on which the Equipment Notes are to
           ---------------
be redeemed or purchased pursuant to Section 6.01(a) or (b), as the case may be,
as specified in the notice delivered pursuant to Section 6.02 hereof.

          "Redemption Price" shall have the meaning specified therefor in
           ----------------
Section 6.01(b).

          "Register" shall have the meaning specified therefor in Section 2.03.
           --------

          "Registrar" means any person acting as Registrar hereunder pursuant to
           ---------
Section 2.03.

          "Remaining Weighted Average Life" means, on the redemption date for an
           -------------------------------
Equipment Note which is being redeemed, the number of days equal to the quotient
obtained by dividing (a) the sum of the products obtained by multiplying (i) the
amount of each then remaining installment of principal, including the payment
due on the maturity date of such Equipment Note, by (ii) the number of days from
and including the redemption date to but excluding the scheduled payment date of
such principal installment; by (b) the then unpaid principal amount of such
Equipment Note.

          "Replacement Airframe" means any airframe substituted for an airframe
           --------------------
in accordance with Section 5.01(a)(ii) hereof.

          "Replacement Engine" means any engine substituted for an Engine in
           ------------------
accordance with Sections 4.01(d), 5.01(a)(ii) or 5.01(b) hereof.

          "SEC" means the Securities and Exchange Commission.
           ---

          "Secured Obligations" shall have the meaning specified therefor in the
           -------------------
Granting Clause hereof.

          "Senior Noteholder" is defined in Section 2.11(c) hereof.
           -----------------

          "Senior Qualified Substitute Purchase Amount" has the meaning
           -------------------------------------------
specified for such term in the Confirmation.

          "Senior Swap Termination Amount" means, on any date of determination,
           ------------------------------
the amount set forth on Exhibit G opposite the Swap Payment Date in Exhibit G
which is the same as, or which most closely follows, such date of determination.

          "Series" means any of Series A-1, Series A-2, Series B, Series C-2
           ------
and, if issued, Series D.

                                       16
<PAGE>

                                  [Trust Indenture and Mortgage ([___________])]

          "Series A-1" or "Series A-1 Equipment Notes" means Equipment Notes
           ----------      --------------------------
issued hereunder and designated as "Series A-1", in the original principal
amount and maturities and bearing interest as specified in Exhibit B-1.

          "Series A-2" or "Series A-2 Equipment Notes" means Equipment Notes
           ----------      --------------------------
issued hereunder and designated as "Series A-2", in the original principal
amount and maturities and bearing interest as specified in Exhibit B-2.

          "Series B" or "Series B Equipment Notes" means Equipment Notes issued
           --------      ------------------------
hereunder and designated as "Series B", in the original principal amount and
maturities and bearing interest as specified in Exhibit B-3.

          "Series C-2" or "Series C-2 Equipment Notes" means Equipment Notes
           ----------      --------------------------
issued hereunder and designated as "Series C-2", in the original principal
amount and maturities and bearing interest as specified in Exhibit B-4.

          "Series D" or "Series D Equipment Notes" means, if Series D Equipment
           --------      ------------------------
Notes are issued, the Equipment Notes issued hereunder and designated as "Series
D", in the original principal amount and maturities and bearing interest as
specified in Exhibit B-5.

          "State Street" means State Street Bank and Trust Company of
           ------------
Connecticut, National Association.

          "Standard & Poor's" means Standard & Poor's Ratings Services, a
           -----------------
Division of The McGraw-Hill Companies, Inc. (or any successor thereto).

          "Subordination Agent" means State Street, as subordination agent under
           -------------------
the Intercreditor Agreement, or any successor thereto.

          "Swap Agreement" means the ISDA Master Agreement together with the
           --------------
schedules and addenda attached thereto as incorporated by reference into the
Confirmation but only in respect of those obligations set out in the
Confirmation.

          "Swap Counterparty" shall mean AFE Trust or any successor or assignee
           -----------------
thereof, including, without limitation, the AFE Indenture Trustee.

          "Swap Obligations" means, on any date of determination, the
           ----------------
obligations, if any, of the Swap Provider to pay the Periodic Swap Payments and
any Swap Termination Amount with respect to the Confirmation.

          "Swap Payment Dates" means January 1, 2001 and each July 1 and January
           ------------------
1 thereafter.

          "Swap Provider" means the Owner.
           -------------

                                       17
<PAGE>

                                  [Trust Indenture and Mortgage ([___________])]

          "Swap Termination Amount" means, on any date of determination, the sum
           -----------------------
of the Senior Swap Termination Amount and the Junior Swap Termination Amount for
such date.

          "Taxes" means any and all present or future fees (including, without
           -----
limitation, license, documentation and registration fees), taxes (including,
without limitation, gross or net income, gross or net receipts, sales, rental,
use, turnover, value added, property (tangible and intangible), excise and stamp
taxes), licenses, levies, imposts, duties, recording charges or fees, charges,
assessments, or withholdings of any nature whatsoever, together with any
assessments, penalties, fines, additions to tax and interest thereon (each,
individually, a "Tax").

          "Transaction" means the Transaction as defined in and evidenced by the
           -----------
Confirmation.

          "Trust Indenture and Mortgage" or "this Agreement" or "this Indenture"
           ----------------------------      --------------      --------------
means this Trust Indenture and Mortgage ([______]), as the same may from time to
time be supplemented, amended or modified.

          "Trustee's Liens" shall have the meaning specified therefor in Section
           ---------------
9.10.

          "United States" or "U.S." means the United States of America.
           -------------      ----

          "United States Government" means the federal government of the United
           ------------------------
States or any instrumentality or agency thereof.

          "Warranty Bill of Sale" means a full warranty bill of sale executed by
           ---------------------
AVSA in favor of Owner and dated the date of delivery of the Aircraft to Owner
pursuant to the terms of the Purchase Agreement.

          "Wet Lease" means any arrangement whereby Owner (or any Permitted
           ---------
Lessee) agrees to furnish the Airframe and Engines or engines installed thereon
to a third party pursuant to which such Airframe and Engines or engines (i)
shall remain in the operational control of Owner (or such Permitted Lessee) and
(ii) shall be maintained, insured and otherwise used and operated in accordance
with the provisions hereof.

                                   ARTICLE 2

                    THE EQUIPMENT NOTES; OTHER OBLIGATIONS

          Section 2.01  Equipment Notes; Title and Terms.  The Equipment Notes
                        --------------------------------
shall be issued in four separate series (or, if Series D Equipment Notes are
issued, five separate series) designated as Series A-1, Series A-2, Series B,
Series C-2 and, if issued, Series D, shall be dated the applicable Issuance Date
with respect to such Series, and shall be in the maturities and principal
amounts and shall bear interest as specified in Exhibit B-1, B-2, B-3, B-4 or,
if Series D Equipment Notes are issued, B-5, as the case may be.  Each Series A-
1, Series A-2, Series B and

                                       18
<PAGE>

                                  [Trust Indenture and Mortgage ([___________])]

Series C-2 Equipment Note shall be issued to the Subordination Agent as nominee
for the Pass Through Trustee under the applicable Pass Through Trust Agreement.
The Issuance Date for the Series A-1, Series A-2, Series B and Series C-2
Equipment Notes will be the Closing Date.

          Each Series of Equipment Notes shall bear interest at the Debt Rate
for such Series (calculated on the basis of a year of 360 days comprised of 30-
day months) on the unpaid principal amount thereof from time to time
outstanding, payable in arrears on each Interest Payment Date until maturity.
The principal of the Series A-1, Series B, Series C-2 and Series D Equipment
Notes shall be payable in installments, on each Payment Date, in amounts equal
to the Amortization Amount for such Payment Date.  The principal of the Series
A-2 Equipment Notes shall be payable in one installment on July 1, 2010.
Notwithstanding the foregoing, the final payment made under each Equipment Note
shall be in an amount sufficient to discharge in full the unpaid principal
amount and all accrued and unpaid interest on, and any other amounts due under,
such Equipment Note.  Each Equipment Note shall bear interest at the Past Due
Rate (calculated on the basis of a year of 360 days comprised of 30-day months)
on any part of the principal amount, Make-Whole Amount, if any, and, to the
extent permitted by applicable law, interest and any other amounts payable
thereunder not paid when due for any period during which the same shall be
overdue, in each case for the period the same is overdue.  Amounts shall be
overdue if not paid when due (whether as stated maturity, by acceleration or
otherwise). Notwithstanding anything to the contrary contained herein, if any
date on which a payment under any Equipment Note becomes due and payable is not
a Business Day, then such payment shall not be made on such scheduled date but
shall be made on the next succeeding Business Day and, if such payment is made
on such next succeeding Business Day, no additional interest shall accrue on the
amount of such payment during such extension.

          The Equipment Notes are not redeemable or subject to purchase prior to
maturity except as provided in this Agreement.

          Section 2.02  Execution and Authentication.  (a) Equipment Notes shall
                        ----------------------------
be executed on behalf of the Owner by the manual or facsimile signature of one
of its authorized officers.

          (b)  If any officer of the Owner executing an Equipment Note no longer
holds that office at the time such Equipment Note is executed on behalf of the
Owner, such Equipment Note shall be valid nevertheless.

          (c)  At any time and from time to time after the execution of the
Equipment Notes, the Owner may deliver such Equipment Notes to the Indenture
Trustee for authentication and, subject to the provisions of Section 2.10, the
Indenture Trustee shall authenticate the Equipment Notes by manual signature
upon written orders of the Owner. Equipment Notes shall be authenticated on
behalf of the Indenture Trustee by any authorized officer or signatory of the
Indenture Trustee.

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                                  [Trust Indenture and Mortgage ([___________])]

          (d)  An Equipment Note shall not be valid or obligatory for any
purpose or entitled to any security or benefit hereunder until executed on
behalf of the Owner by the manual or facsimile signature of an officer of the
Owner as provided in Section 2.02(a) and until authenticated on behalf of the
Indenture Trustee by the manual signature of an authorized officer or signatory
of the Indenture Trustee as provided in Section 2.02(c). Such signatures shall
be conclusive evidence that such Equipment Note has been duly executed,
authenticated and issued under this Agreement.

          Section 2.03  Registrar and Paying Agent.  The Indenture Trustee shall
                        --------------------------
maintain an office or agency where the Equipment Notes may be presented for
registration of transfer or for exchange (the "Registrar") and an office or
agency where (subject to Sections 2.04 and 2.08) the Equipment Notes may be
presented for payment or for exchange (the "Paying Agent").  The Registrar shall
keep a register (the "Register") with respect to the Equipment Notes and to
their transfer and exchange and the payments of Amortization Amounts thereon, if
any.  The Indenture Trustee may appoint one or more co-registrars (the "Co-
Registrars") and one or more additional Paying Agents for the Equipment Notes
and the Indenture Trustee may terminate the appointment of any Co-Registrar or
Paying Agent at any time upon written notice.  The term "Registrar" includes any
Co-Registrar.  The term "Paying Agent" includes any additional Paying Agent.

          The Indenture Trustee shall initially act as Registrar and Paying
Agent.

          Section 2.04  Transfer and Exchange.  At the option of the Noteholder
                        ---------------------
thereof, Equipment Notes may be exchanged for an equal aggregate principal
amount of other Equipment Notes of the same Series, maturity and type and of any
authorized denominations or transferred upon surrender of the Equipment Notes to
be exchanged or transferred at the principal corporate trust office of the
Indenture Trustee, or at any office or agency maintained for such purpose
pursuant to Section 2.03.  Whenever any Equipment Notes are so surrendered for
exchange, the Owner shall execute, and the Indenture Trustee shall authenticate
and deliver, the replacement Equipment Notes, in the same aggregate principal
amount, Series and dated the same date as the Equipment Note or Equipment Notes
being replaced which the Noteholder making the exchange is entitled to receive.

          All Equipment Notes issued upon any registration of transfer or
exchange of Equipment Notes shall be the valid obligations of the Owner,
evidencing the same obligations, and entitled to the same security and benefits
under this Agreement, as the Equipment Notes surrendered upon such registration
of transfer or exchange.

          Every Equipment Note presented or surrendered for registration of
transfer or exchange shall (if so required by the Registrar) be duly endorsed
by, or be accompanied by a written instrument of transfer in form satisfactory
to the Registrar duly executed by, the Noteholder thereof or his attorney duly
authorized in writing.  Indenture Trustee may require such evidence reasonably
satisfactory to it as to the compliance of any such transfer with the Securities
Act, and the securities laws of any applicable state.  Each initial Noteholder
and each

                                       20
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                                  [Trust Indenture and Mortgage ([___________])]

transferee of an Equipment Note, by its acceptance of an Equipment Note, agrees
to be bound by and comply with the provisions of the Participation Agreement,
this Indenture, the Note Purchase Agreement and each other Fundamental Document
applicable to a Noteholder.

          The Indenture Trustee shall make a notation on each new Equipment Note
of the amount of all payments of Amortization Amount previously made on the old
Equipment Note or Equipment Notes with respect to which such new Equipment Note
is issued and the date to which interest on such old Equipment Note or Equipment
Notes has been paid. Interest shall be deemed to have been paid on such new
Equipment Note to the date on which interest shall have been paid on such old
Equipment Note, and all payments of the Amortization Amount marked on such new
Equipment Note, as provided above, shall be deemed to have been made thereon.

          No service charge shall be made to a Noteholder for any registration
of transfer or exchange of Equipment Notes, but the Registrar may, as a
condition to any transfer or exchange hereunder, require payment of a sum
sufficient to cover any tax or other governmental charge that may be imposed in
connection with any registration of transfer or exchange of Equipment Notes.

          The Registrar shall not be required to register the transfer of or to
exchange any Equipment Note called for redemption or purchase pursuant to such
Section 6.01 or 6.02.

          Section 2.05  Noteholder Lists; Ownership of Equipment Notes.  (a) The
                        ----------------------------------------------
Indenture Trustee shall preserve in as current a form as is reasonably
practicable the most recent list available to it of the names and addresses of
the Noteholders, which list shall be available to the Owner or its
representative for inspection.  If the Indenture Trustee is not the Registrar,
the Registrar shall be required to furnish to the Indenture Trustee semi-
annually on or before each Interest Payment Date, and at such other times as the
Indenture Trustee may request in writing, a list, in such form and as of such
date as the Indenture Trustee may reasonably require, containing all the
information in the possession or control of the Registrar as to the names and
addresses of the Noteholders.

          (b)  Ownership of the Equipment Notes shall be proved by the Register
kept by the Registrar.  Prior to due presentment for registration of transfer of
any Equipment Note, the Owner, the Indenture Trustee, the Paying Agent and the
Registrar may deem and treat the Person in whose name any Equipment Note is
registered as the absolute owner of such Equipment Note for the purpose of
receiving payment of principal (including, subject to the provisions herein
regarding the applicable Record Dates, Amortization Amounts) of, Make-Whole
Amount, if any, and interest on such Equipment Note and for all other purposes
whatsoever, whether or not such Equipment Note is overdue, and none of the
Owner, the Indenture Trustee, the Paying Agent or the Registrar shall be
affected by notice to the contrary.

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                                  [Trust Indenture and Mortgage ([___________])]

          Section 2.06  Mutilated, Destroyed, Lost or Stolen Equipment Notes.
                        ----------------------------------------------------
If any Equipment Note shall become mutilated, destroyed, lost or stolen, the
Owner shall, upon the written request of the Noteholder of such Equipment Note,
issue and execute, and the Indenture Trustee shall authenticate and deliver, in
replacement thereof, as applicable, a new Equipment Note of the same Series and
having the same maturity, payable to the same Noteholder in the same principal
amount and dated the same date as the Equipment Note so mutilated, destroyed,
lost or stolen. If the Equipment Note being replaced has become mutilated, such
Equipment Note shall be surrendered to the Indenture Trustee. If the Equipment
Note being replaced has been destroyed, lost or stolen, the Noteholder of such
Equipment Note shall furnish to the Owner and the Indenture Trustee such
security or indemnity as may be required by it to save the Owner and the
Indenture Trustee harmless and evidence satisfactory to the Owner and the
Indenture Trustee of the destruction, loss or theft of such Equipment Note and
of the ownership thereof.

          Section 2.07  Cancellation.  The Registrar and any Paying Agent shall
                        ------------
forward to the Indenture Trustee all Equipment Notes surrendered to them for
replacement, redemption, registration of transfer, exchange or payment.  The
Indenture Trustee shall cancel all Equipment Notes surrendered for replacement,
redemption, registration of transfer, exchange, payment or cancellation and
shall destroy canceled Equipment Notes.

          Section 2.08  Payment on Confirmation and Equipment Notes. The (i)
                        -------------------------------------------
Periodic Swap Payments and Swap Termination Amounts due from the Swap Provider
under the Confirmation, and (ii) principal amount of, interest on, Make-Whole
Amount, if any, and other amounts due under each Equipment Note or hereunder
will be payable in Dollars by wire transfer of immediately available funds not
later than (i) if the same Person is acting as Indenture Trustee, AFE Indenture
Trustee and Subordination Agent, 11:00 a.m., Chicago, Illinois time, or (ii) if
the same Person is not acting as Indenture Trustee, AFE indenture Trustee and
Subordination Agent, 10:00 a.m., Chicago, Illinois time, on the due date of
payment to the Indenture Trustee at the Corporate Trust Department for
distribution among the Swap Counterparty and Noteholders in the manner provided
herein.  The Owner shall not have any responsibility for the distribution of
such payment to the Swap Counterparty or any Noteholder. Notwithstanding the
foregoing or any provision in the Confirmation or any Equipment Note to the
contrary, the Indenture Trustee will use reasonable efforts to pay or cause to
be paid, if so directed in writing by the Swap Counterparty or by any Noteholder
(with a copy to the Owner), all amounts paid by the Owner hereunder and under
the Confirmation or such holder's Equipment Note or Equipment Notes to the Swap
Counterparty or such holder or a nominee therefor (including all amounts
distributed pursuant to Article 3 of this Agreement) by transferring, or causing
to be transferred, by wire transfer of immediately available funds in Dollars,
prior to 11:00 a.m., Chicago, Illinois time, on the due date of payment, to an
account maintained by such holder with a bank located in the continental United
States the amount to be distributed to such holder, for credit to the account of
such Swap Counterparty or holder maintained at such bank.  If the Indenture
Trustee shall fail to make any such payment as provided in the immediately
foregoing sentence after its receipt of funds at the place and prior to the time
specified above, the Indenture Trustee, in its individual capacity and not as
trustee, agrees to compensate Swap Counterparty or such holders for loss of use
of funds at the federal funds rate until such payment is made and the Indenture
Trustee shall

                                       22
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                                  [Trust Indenture and Mortgage ([___________])]

be entitled to any interest earned on such funds until such payment is made. Any
payment made hereunder shall be made free and clear of and without deduction for
or on account of all wire and like charges without any presentment or surrender
of the Confirmation or any Equipment Note, except that, in the case of the final
payment in respect of any Equipment Note, such Equipment Note shall be
surrendered to the Indenture Trustee for cancellation promptly after such
payment. Notwithstanding any other provision of this Agreement to the contrary,
the Indenture Trustee shall not be required to make, or cause to be made, wire
transfers as aforesaid prior to the first Business Day on which it is
practicable for the Indenture Trustee to do so in view of the time of day when
the funds to be so transferred were received by it if such funds were received
after 11:00 a.m., Chicago, Illinois time, at the place of payment.

          Section 2.09  Termination of Interest in the Indenture Estate.  No
                        -----------------------------------------------
Noteholder or Indenture Indemnitee shall have any further interest in, or other
right with respect to, the Indenture Estate when and if the principal amount of,
Make-Whole Amount, if any, and interest on all Equipment Notes held by such
Noteholder and all other sums payable to such Noteholder or Indenture Indemnitee
(other than the Swap Counterparty), as the case may be, hereunder, under such
Equipment Notes and under the other Operative Documents shall have been paid in
full.  The Swap Counterparty shall not have any further interest in, or other
right with respect to, the Indenture Estate following (a) the termination of the
Confirmation and payment in full of all amounts payable thereunder, or (b) the
written release by the Swap Counterparty.

          Section 2.10  Withholding Taxes.  The Indenture Trustee, as agent for
                        -----------------
the Owner, shall exclude and withhold at the appropriate rate from each payment
of principal amount of, interest on, Make-Whole Amount, if any, and other
amounts due hereunder or under each Equipment Note (and such exclusion and
payment of withholding tax shall constitute payment in respect of such Equipment
Note) any and all United States withholding taxes applicable thereto as required
by law.  The Indenture Trustee agrees to act as such withholding agent and, in
connection therewith, whenever any present or future United States taxes or
similar charges are required to be withheld with respect to any amounts payable
hereunder or in respect of the Equipment Notes, to withhold such amounts and
timely pay the same to the appropriate authority in the name of and on behalf of
the Noteholders, that it will file any necessary United States withholding tax
returns or statements when due, and that as promptly as possible after the
payment thereof (but in no event later than 30 days after the due date thereof)
it will deliver to each Noteholder (with a copy to the Owner) appropriate
receipts and a U.S. Treasury Form 1042-S and Form 8109 or Form 8109-B (or
similar form at any relevant time in effect) showing the payment thereof,
together with such additional documentary evidence as any such Noteholder may
reasonably request from time to time.

          If a Noteholder which is a Non-U.S. Person has furnished to the
Indenture Trustee a properly completed, accurate and currently effective U.S.
Internal Revenue Service Form W-8 BEN, W-8 IMY, W-8 ECI or W-8 EXP (or such
successor form or forms as may be required by the United States Treasury
Department) for the calendar year in which the payment hereunder or under the
Equipment Note(s) held by such Noteholder is made (but prior to the making of
such payment), and has not notified the Indenture Trustee of the withdrawal or
inaccuracy of such

                                       23
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                                  [Trust Indenture and Mortgage ([___________])]

form prior to the date of such payment (and the Indenture Trustee has no reason
to believe that any information set forth in such form is inaccurate), the
Indenture Trustee shall withhold only the amount, if any, required by law (after
taking into account any applicable exemptions properly claimed by the
Noteholder) to be withheld from payments hereunder or under the Equipment Notes
held by such Noteholder in respect of United States federal income tax (and such
payment of withholding tax shall constitute payment in respect of such Equipment
Note). If a Noteholder which is a U.S. Person has furnished to the Indenture
Trustee a properly completed, accurate and currently effective U.S. Internal
Revenue Service Form W-9, if applicable, prior to a payment hereunder or under
the Equipment Notes held by such Noteholder, no amount shall be withheld from
payments in respect of United States federal income tax. If any Noteholder has
notified the Indenture Trustee that any of the foregoing forms or certificates
is withdrawn or inaccurate, or if such Noteholder has not filed a form claiming
an exemption from United States withholding tax which is applicable to any
relevant period in which a payment is made or if the Code or the regulations
thereunder or the administrative interpretation thereof is at any time after the
date hereof amended to require such withholding of United States federal income
taxes from payments under the Equipment Notes held by such Noteholder, the
Indenture Trustee agrees to withhold from each payment due to the relevant
Noteholder withholding taxes at the appropriate rate under law and will, on a
timely basis as more fully provided above, deposit such amounts with an
authorized depository and make such returns, statements, receipts and other
documentary evidence in connection therewith as required by law.

          Owner shall not have any liability for the failure of the Indenture
Trustee to withhold taxes in the manner provided for herein or for any false,
inaccurate or untrue evidence provided by any Noteholder hereunder.

          Section 2.11  Subordination.  (a) The Indenture Trustee and, by
                        -------------
acceptance of its Equipment Notes of any Series, each Noteholder of such Series,
hereby agree that no payment or distribution shall be made on or in respect of
the Secured Obligations relating to the Equipment Notes owed to such Noteholder
of such Series, including any payment or distribution of cash, property or
securities after the commencement of a proceeding of the type referred to in
Section 8.01(e) or (f) hereof, except as expressly provided in Article 3 hereof.

          (b)  By the acceptance of its Equipment Notes of any Series (other
than Series A-1 and Series A-2), each Noteholder of such Series agrees that in
the event that such Noteholder, in its capacity as a Noteholder, shall receive
any payment or distribution on any Secured Obligations in respect of such Series
which it is not entitled to receive under this Section 2.11 or Article 3 hereof,
it will hold any amount so received in trust for the Senior Noteholder (as
defined in Section 2.11(c) hereof) and will forthwith turn over such payment to
the Indenture Trustee in the form received to be applied as provided in the
Article 3 hereof.

          (c)  As used in this Section 2.11, the term "Senior Noteholder" shall
mean (i) the Noteholders of Series A-1 and Series A-2 until the Secured
Obligations in respect of Series A-1 and Series A-2 Equipment Notes have been
paid in full, (ii) after the Secured Obligations in respect of Series A-1 and
Series A-2 Equipment Notes have been paid in full, the

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<PAGE>

                                  [Trust Indenture and Mortgage ([___________])]

Noteholders of Series B until the Secured Obligations in respect of Series B
Equipment Notes have been paid in full, (iii) after the Secured Obligations in
respect of Series A-1, Series A-2 and Series B Equipment Notes have been paid in
full, the Noteholders of Series C-2 until the Secured Obligations in respect of
Series C-2 Equipment Notes have been paid in full, and (iv) after the Secured
Obligations in respect of Series A-1, Series A-2, Series B and Series C-2
Equipment Notes have been paid in full, and if any Series D Equipment Notes have
been issued, the Noteholders of Series D Equipment Notes; provided, however,
that in the event that a Series of Equipment Notes shall be redeemed pursuant to
the provisions of Section 6.01(b), the amounts received by the Indenture Trustee
in connection with such redemption shall be applied in accordance with the
provisions of Section 3.02(b) notwithstanding anything contained in this Section
2.11 to the contrary.

          (d)  By the acceptance of its Equipment Notes of any Series, each
Noteholder of such Series agrees that in the event that such Noteholder, in its
capacity as a Noteholder, shall receive any payment or distribution on any
Secured Obligations in respect of the Swap Obligations which it is not entitled
to receive under Article 3 hereof, it shall hold any amount so received in trust
for the Swap Counterparty and shall forthwith turn over such payment to the
Indenture Trustee in the form received to be applied as provided in the Article
3 hereof.

          Section 2.12  Certain Agreements Regarding Liquidity Facilities.
                        -------------------------------------------------
Without duplication of amounts paid by the Owner under the Participation
Agreement or the other Fundamental Documents, the Owner agrees to pay to the
Indenture Trustee for distribution in accordance with Section 3.04 hereof:  (i)
an amount equal to the fees payable to the relevant Liquidity Provider under the
related Fee Letter (as defined in the Intercreditor Agreement as originally in
effect or as amended with the consent of the Owner) multiplied by a fraction the
numerator of which shall be the sum of the then outstanding aggregate principal
amount of the Series A-1 Equipment Notes, Series A-2 Equipment Notes and Series
B Equipment Notes and the denominator of which shall be the sum of the then
outstanding aggregate principal amount of all "Series A-1 Equipment Notes",
"Series A-2 Equipment Notes" and "Series B Equipment Notes" (each as defined in
the Intercreditor Agreement); (ii) (x) the amount equal to interest on any
Downgrade Advance (other than any Applied Downgrade Advance) payable under
Section 3.07 of each Liquidity Facility minus Investment Earnings from such
Downgrade Advance multiplied by (y) the fraction specified in the foregoing
clause (i); (iii) (x) the amount equal to interest on any Non-Extension Advance
(other than any Applied Non-Extension Advance) payable under Section 3.07 of
each Liquidity Facility minus Investment Earnings from such Non-Extension
Advance multiplied by (y) the fraction specified in the foregoing clause (i);
(iv) (x) any amounts owed to the Liquidity Providers by the Subordination Agent
as borrower under Section 3.01 (other than in respect of an Unpaid Advance, an
Applied Non-Extension Advance or Applied Downgrade Advance), 3.02, 3.03 (other
than in respect of an Unpaid Advance, an Applied Non-Extension Advance or
Applied Downgrade Advance), 7.05 or 7.07 of each Liquidity Facility (or similar
provisions of any succeeding Liquidity Facility) multiplied by (y) the fraction
specified in the foregoing clause (i); (v) if any payment default shall have
occurred and be continuing with respect to interest on any Series A-1 Equipment
Note, Series A-2 Equipment Notes or Series B Equipment Note, (x) the excess, if
any, of (1) the sum of

                                       25
<PAGE>

                                  [Trust Indenture and Mortgage ([___________])]

(x) the amount equal to interest on any Unpaid Advance, an Applied Non-Extension
Advance or Applied Downgrade Advance payable under Section 3.07 of each
Liquidity Facility plus (y) any other amounts payable in respect of such Unpaid
Advance, Applied Non-Extension Advance or Applied Downgrade Advance under
Section 3.01, 3.03 or 3.09 of the applicable Liquidity Facility over (2) the sum
of Investment Earnings from any such Unpaid Advance, Applied Non-Extension
Advance or Applied Downgrade Advance plus any amount of interest at the Past Due
Rate actually payable (whether or not in fact paid) by the Owner on the overdue
scheduled interest on the Equipment Notes in respect of which such Unpaid
Advance, Applied Non-Extension Advance or Applied Downgrade Advance was made,
multiplied by (y) a fraction the numerator of which shall be the then aggregate
overdue amounts of interest on the Series A-1 Equipment Notes, Series A-2
Equipment Notes and Series B Equipment Notes (other than interest becoming due
and payable solely as a result of acceleration of any such Equipment Notes) and
the denominator of which shall be the then aggregate overdue amounts of interest
on all "Series A-1 Equipment Notes", "Series A-2 Equipment Notes" and "Series B
Equipment Notes" (each as defined in the Intercreditor Agreement) (other than
interest becoming due and payable solely as a result of acceleration of any such
"Equipment Notes"); (vi) Owner's pro rata share of all compensation and
reimbursement of expenses, disbursements and advances payable by Owner under the
Pass Through Trust Agreements; (vii) all amounts payable (to the extent not
paid) pursuant to Section 2.12 of the AFE Indenture multiplied by a fraction the
numerator of which is the principal balance then outstanding of Equipment Notes
and the denominator of which is the aggregate principal balance then outstanding
of all "United Equipment Notes" (as such term is defined in the Intercreditor
Agreement); and (viii) Owner's pro rata share of all compensation and
reimbursement of expenses and disbursements payable to the Subordination Agent
under the Intercreditor Agreement except with respect to any income or franchise
taxes incurred by the Subordination Agent in connection with the transactions
contemplated by the Intercreditor Agreement. For purposes of this paragraph, the
terms "Applied Downgrade Advance", "Applied Non-Extension Advance", "Downgrade
Advance", "Final Advance", "Investment Earnings" and "Unpaid Advance" shall have
the meanings specified in each Liquidity Facility or the Intercreditor Agreement
referred to therein. As used herein, "Owner's pro rata share" means as of any
time a fraction, the numerator of which is the principal balance then
outstanding of Equipment Notes and the denominator of which is the aggregate
principal balance then outstanding of all "Trust Owned Notes" (as such term is
defined in the Intercreditor Agreement).

          Section 2.13  Payments on the Confirmation.  The Swap Provider agrees
                        ----------------------------
to pay, for distribution in accordance with this Agreement, all Periodic Swap
Payments and Swap Termination Amounts to the Indenture Trustee as provided in
Section 2.08 and to otherwise pay and perform all of its other obligations under
the Confirmation, the terms of which are hereby incorporated by reference.

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                                  [Trust Indenture and Mortgage ([___________])]

                                   ARTICLE 3

                RECEIPT, DISTRIBUTION AND APPLICATION OF FUNDS

          Section 3.01  Basic Distributions.  Except as otherwise provided in
                        -------------------
Section 3.03 hereof, each Periodic Swap Payment and each periodic payment of
principal or interest on the Equipment Notes received by the Indenture Trustee
shall be promptly distributed in the following order of priority:

First,         so much of such payment as shall be required to pay in full the
-----          aggregate amount of any Periodic Swap Payment then due under the
               Confirmation, if any, shall be paid to the Swap Counterparty;

Second,        (i) so much of such payment as shall be required to pay in full
------         the aggregate amount of the payment or payments of principal
               amount and interest (as well as any interest on any overdue
               principal amount and, to the extent permitted by applicable law,
               on any overdue interest) then due under all Series A-1 Equipment
               Notes and all Series A-2 Equipment Notes shall be distributed to
               each Noteholder of Series A-1 Equipment Notes and Series A-2
               Equipment Notes ratably, without priority of one over the other,
               in the proportion that the amount of such payment or payments
               then due under all Series A-1 Equipment Notes and all Series A-2
               Equipment Notes held by such Noteholder bears to the aggregate
               amount of the payments then due under all Series A-1 Equipment
               Notes and all Series A-2 Equipment Notes;

               (ii) after giving effect to paragraph (i) above, so much of such
               payment remaining as shall be required to pay in full the
               aggregate amount of the payment or payments of principal amount
               and interest (as well as any interest on any overdue principal
               amount and, to the extent permitted by applicable law, on any
               overdue interest) then due under all Series B Equipment Notes
               shall be distributed to each Noteholder of Series B Equipment
               Notes ratably, without priority of one over the other, in the
               proportion that the amount of such payment or payments then due
               under all Series B Equipment Notes held by such Noteholder bears
               to the aggregate amount of the payments then due under all Series
               B Equipment Notes;

               (iii) after giving effect to paragraph (ii) above, so much of
               such payment remaining as shall be required to pay in full the
               aggregate amount of the payment or payments of principal amount
               and interest (as well as any interest on any overdue principal
               amount and, to the extent permitted by applicable law, on any
               overdue interest) then due under all Series C-2 Equipment Notes
               shall be distributed to each Noteholder of Series C-2 Equipment
               Notes ratably, without priority of one over the other, in the
               proportion that the amount of such payment or payments then due
               under all Series C-2 Equipment Notes held by such

                                       27
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                                  [Trust Indenture and Mortgage ([___________])]

               Noteholder bears to the aggregate amount of the payments then due
               under all Series C-2 Equipment Notes; and

Third,         if any Series D Equipment Notes have been issued, so much of such
-----          payment remaining as shall be required to pay in full the
               aggregate amount of the payment or payments of principal amount
               and interest (as well as any interest on any overdue principal
               amount and, to the extent permitted by applicable law, on any
               overdue interest) then due under all Series D Equipment Notes
               shall be distributed to each Noteholder of Series D Equipment
               Notes ratably, without priority of one over the other, in the
               proportion that the amount of such payment or payments then due
               under all Series D Equipment Notes held by such Noteholder bears
               to the aggregate amount of the payments then due under all Series
               D Equipment Notes; and

Fourth,        the balance, if any, of such installment remaining thereafter
------         shall be distributed to the Owner.

               Section 3.02  Event of Loss; Optional Redemption.  (a)  Except as
                             ----------------------------------
otherwise provided in Section 3.03 hereof, any payments received by the
Indenture Trustee pursuant to Section 6.01(a) following an Event of Loss with
respect to the Aircraft shall be applied to the Secured Obligations by applying
such funds in the following order of priority:

First,         (i) to reimburse the Indenture Trustee, the Swap Counterparty and
-----          the Noteholders for any reasonable costs or expenses incurred in
               connection with such redemption for which they are entitled to
               reimbursement, or indemnity by Owner, under the Confirmation or
               the Operative Documents and then (ii) to pay any other amounts
               then due (except as provided in clauses "Second" through
               "Seventh" below) to the Indenture Trustee, the Swap Counterparty,
               the Noteholders and the other Indenture Indemnitees under this
               Indenture, the Participation Agreement, the Confirmation, the
               Equipment Notes or any other Fundamental Documents;

Second,        to pay to the Swap Counterparty the lesser of the Senior
------         Qualified Substitute Purchase Amount and the Senior Swap
               Termination Amount;

Third,         to pay amounts specified in clause "First" of Section 3.01
-----          hereof;

Fourth,        (i) to pay the amounts specified in paragraph (i) of clause
------         "Second" of Section 3.01 hereof;

               (ii) after giving effect to paragraph (i) above, to pay the
               amounts specified in paragraph (ii) of clause "Second" of Section
               3.01 hereof; and

               (iii) after giving effect to paragraph (ii) above, to pay the
               amounts specified in paragraph (iii) of clause "Second" of
               Section 3.01 hereof;

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                                  [Trust Indenture and Mortgage ([___________])]

Fifth,         to pay to the Swap Counterparty the lesser of the Junior
-----          Qualified Substitute Purchase Amount and the Junior Swap
               Termination Amount;

Sixth,         if any Series D Equipment Notes have been issued, to pay the
-----          amounts specified in clause "Third" of Section 3.01 hereof;

Seventh,       to pay amounts specified in clause "Fourth" of Section 3.01
-------        hereof; and

Eighth,        the balance, if any, of such installment remaining thereafter
------         shall be distributed to the Owner.

provided, however, that if a Replacement Airframe or Replacement Engine shall be
--------  -------
substituted for the Airframe or Engine subject to such Event of Loss as provided
in Section 5.01 hereof, any insurance, condemnation or similar proceeds which
result from such Event of Loss and are paid over to the Indenture Trustee shall
be held by the Indenture Trustee as permitted by Section 5.01 hereof (provided
that such moneys shall be invested as provided in Section 9.04 hereof) as
additional security for the obligations of Owner under the Operative Documents
and such proceeds (and such investment earnings), to the extent not theretofore
applied as provided herein, shall be released to the Owner at the Owner's
written request upon the release of such Airframe or Engine and the replacement
thereof as provided herein.

          No Make-Whole Amount shall be due and payable on the Equipment Notes
as a consequence of a prepayment under this Section 3.02(a).

          (b)  Except as otherwise provided in Section 3.03 hereof, any payments
received by the Indenture Trustee in connection with an optional redemption of
any Series of the Equipment Notes pursuant to Section 6.01(b) shall be applied
to redemption of such Series of Equipment Notes and to all other Secured
Obligations due and owing the holders of such Series by applying such funds in
the following order of priority:

First,         to reimburse the Indenture Trustee and the holders of such Series
-----          for any reasonable costs or expenses incurred in connection with
               such redemption for which they are entitled to reimbursement or
               indemnity by Owner under the Operative Documents;

Second,        so much of such payment as shall be required to pay in full the
------         aggregate amount of the payment or payments of principal amount
               and interest (as well as any interest on any overdue principal
               amount and, to the extent permitted by applicable law, on any
               overdue interest) then due under such Series of Equipment Notes
               and all other Secured Obligations due and owing to the holders of
               such Series of Equipment Notes shall be distributed to the
               holders of such Series ratably, without priority of one over the
               other, in the proportion that the amount of such payment or
               payments then due under all Equipment Notes of such Series

                                       29
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                                  [Trust Indenture and Mortgage ([___________])]

               held by such Noteholders bears to the aggregate amount of the
               payments then due under all Equipment Notes of such Series; and

Third,         the balance, if any, of such installment remaining thereafter
-----          shall be distributed to the Owner.

               (c)  Except as otherwise provided in Section 3.03 hereof, any
payments received by the Indenture Trustee in connection with a satisfaction of
the Swap Obligations pursuant to Section 6.01(c) shall be applied to the
satisfaction of such Swap Obligations and to all other Secured Obligations due
and owing the Swap Counterparty by applying such funds in the following order of
priority:

First,         to reimburse the Indenture Trustee and the Swap Counterparty for
-----          any reasonable costs or expenses incurred in connection with such
               satisfaction for which they are entitled to reimbursement or
               indemnity by the Swap Provider under this Indenture or the
               Confirmation;

Second,        so much of such payment as shall be required to pay in full the
------         aggregate amount of any Periodic Swap Payment then due under the
               Confirmation, if any, shall be paid to the Swap Counterparty,

Third,         to pay to the Swap Counterparty the lesser of the Senior
-----          Qualified Substitute Purchase Amount and the Senior Swap
               Termination Amount;

Fourth,        to pay to the Swap Counterparty the lesser of the Junior
------         Qualified Substitute Purchase Amount and the Junior Swap
               Termination Amount; and

Fifth,         the balance, if any, of such installment remaining thereafter
-----          shall be distributed to the Owner.

               Section 3.03  Payments After Indenture Event of Default.
                             -----------------------------------------

               Except as otherwise provided in Section 3.04 hereof, all payments
received and amounts held or realized by the Indenture Trustee (including any
amounts realized by the Indenture Trustee from the exercise of any remedies
pursuant to Article 8 hereof) after an Indenture Event of Default shall have
occurred and be continuing and after the declaration specified in Section 8.02
hereof, as well as all payments or amounts then held by the Indenture Trustee as
part of the Indenture Estate, shall be promptly distributed by the Indenture
Trustee in the following order of priority:

First,         so much of such payments or amounts as shall be required to (i)
-----          reimburse the Indenture Trustee or State Street for any Tax
               (except to the extent resulting from a failure of the Indenture
               Trustee to withhold taxes pursuant to Section 2.10 hereof),

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                                    [Trust Indenture and Mortgage ([_________])]

          expense or other loss (including, without limitation, all amounts to
          be expended at the expense of, or charged upon the proceeds of, the
          Indenture Estate pursuant to Section 8.03 hereof) incurred by the
          Indenture Trustee or State Street (to the extent not previously
          reimbursed), the expenses of any sale, or other proceeding, reasonable
          attorneys' fees and expenses, court costs, and any other expenditures
          incurred or expenditures or advances made by the Indenture Trustee,
          State Street, the Noteholders or the Swap Counterparty in the
          protection, exercise or enforcement of any right, power or remedy or
          any damages sustained by the Indenture Trustee, State Street, any
          Noteholder or the Swap Counterparty, liquidated or otherwise, upon
          such Event of Default shall be applied by the Indenture Trustee as
          between itself, State Street, the Noteholders and the Swap
          Counterparty in reimbursement of such expenses and any other expenses
          for which the Indenture Trustee, State Street, the Noteholders or the
          Swap Counterparty are entitled to reimbursement under any Operative
          Document or the Confirmation and (ii) pay all other amounts payable to
          the Swap Counterparty or the other Indenture Indemnitees hereunder and
          under the Participation Agreement or the Confirmation, as applicable
          (other than amounts specified in clauses "Second" through "Sixth"
                                                    ------           -----
          below); and in the case the aggregate amount to be so distributed is
          insufficient to pay as aforesaid, then ratably, without prior of one
          over the other, in proportion to the amounts owed each hereunder and
          under the Participation Agreement or the Confirmation;

Second,   so much of such payments or amounts remaining as shall be required to
------    reimburse the then existing or prior Noteholders or the Swap
          Counterparty for payments made pursuant to Section 9.06 hereof (to the
          extent not previously reimbursed), shall be distributed to such then
          existing or prior Noteholders or the Swap Counterparty ratably,
          without priority of one over the other, in accordance with the amount
          of the payment or payments made by each such then existing or prior
          Noteholder or the Swap Counterparty pursuant to said Section 9.06
          hereof;

Third,    to pay to the Swap Counterparty (i) the lesser of the Senior
-----     Qualified Substitute Purchase Amount and the then applicable Senior
          Swap Termination Amount and (ii) any previously due and owing, but
          unpaid, Periodic Swap Payments;

Fourth,   (i) so much of such payments or amounts remaining as shall be required
------    to pay in full the aggregate unpaid principal amount of all Series A-1
          Equipment Notes and all Series A-2 Equipment Notes, and the accrued
          but unpaid interest and other amounts due thereon and all other
          Secured Obligations owed in respect of the Series A-1 Equipment Notes
          and Series A-2 Equipment Notes to the date of distribution, shall be
          distributed to the Noteholders of Series A-1 Equipment Notes and
          Series A-2 Equipment Notes, and in case the aggregate amount so to be
          distributed shall be insufficient to pay in full as aforesaid, then
          ratably, without priority of one over the other, in the proportion
          that the aggregate unpaid principal amount of all Series A-1 Equipment
          Notes and all Series A-2 Equipment Notes

                                       31
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                                    [Trust Indenture and Mortgage ([_________])]

          held by each Noteholder plus the accrued but unpaid interest and other
          amounts due hereunder or thereunder to the date of distribution, bears
          to the aggregate unpaid principal amount of all Series A-1 Equipment
          Notes and all Series A-2 Equipment Notes held by all such Noteholders
          plus the accrued but unpaid interest and other amounts due thereon to
          the date of distribution;

          (ii) after giving effect to paragraph (i) above, so much of such
          payments or amounts remaining as shall be required to pay in full the
          aggregate unpaid principal amount of all Series B Equipment Notes, and
          the accrued but unpaid interest and other amounts due thereon and all
          other Secured Obligations in respect of the Series B Equipment Notes
          to the date of distribution, shall be distributed to the Noteholders
          of Series B Equipment Notes, and in case the aggregate amount so to be
          distributed shall be insufficient to pay in full as aforesaid, then
          ratably, without priority of one over the other, in the proportion
          that the aggregate unpaid principal amount of all Series B Equipment
          Notes held by each Noteholder plus the accrued but unpaid interest and
          other amounts due hereunder or thereunder to the date of distribution,
          bears to the aggregate unpaid principal amount of all Series B
          Equipment Notes held by all such Noteholders plus the accrued but
          unpaid interest and other amounts due thereon to the date of
          distribution; and

          (iii) after giving effect to paragraph (ii) above, so much of such
          payments or amounts remaining as shall be required to pay in full the
          aggregate unpaid principal amount of all Series C-2 Equipment Notes,
          and the accrued but unpaid interest and other amounts due thereon and
          all other Secured Obligations in respect of the Series C-2 Equipment
          Notes to the date of distribution, shall be distributed to the
          Noteholders of Series C-2 Equipment Notes, and in case the aggregate
          amount so to be distributed shall be insufficient to pay in full as
          aforesaid, then ratably, without priority of one over the other, in
          the proportion that the aggregate unpaid principal amount of all
          Series C-2 Equipment Notes held by each Noteholder plus the accrued
          but unpaid interest and other amounts due hereunder or thereunder to
          the date of distribution, bears to the aggregate unpaid principal
          amount of all Series C-2 Equipment Notes held by all such Noteholders
          plus the accrued but unpaid interest and other amounts due thereon to
          the date of distribution;

Fifth,    to pay to the Swap Counterparty the lesser of the Junior
-----     Qualified Substitute Purchase Amount and the then applicable Junior
          Swap Termination Amount;

Sixth,    if any Series D Equipment Notes have been issued, so much of such
-----     payments or amounts remaining as shall be required to pay in full the
          aggregate unpaid principal amount of all Series D Equipment Notes, and
          the accrued but unpaid interest and other amounts due thereon and all
          other Secured Obligations in respect of the Series D Equipment Notes
          to the date of distribution, shall be

                                       32
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                                    [Trust Indenture and Mortgage ([_________])]

          distributed to the Noteholders of Series D Equipment Notes, and in
          case the aggregate amount so to be distributed shall be insufficient
          to pay in full as aforesaid, then ratably, without priority of one
          over the other, in the proportion that the aggregate unpaid principal
          amount of all Series D Equipment Notes held by each Noteholder plus
          the accrued but unpaid interest and other amounts due hereunder or
          thereunder to the date of distribution, bears to the aggregate unpaid
          principal amount of all Series D Equipment Notes held by all such
          Noteholders plus the accrued but unpaid interest and other amounts due
          thereon to the date of distribution; and

Seventh,  the balance, if any, of such payments or amounts remaining thereafter
-------   shall be distributed to the Owner.

          No Make-Whole Amount shall be payable in connection with an Indenture
Event of Default or distributable under this Section 3.03.

          Section 3.04  Certain Payments.
                        ----------------

          (a)  Any payments received by the Indenture Trustee for which no
provision as to the application thereof is made in this Agreement and for which
such provision is made in any other Fundamental Document or the Confirmation
shall be applied forthwith to the purpose for which such payment was made in
accordance with the terms of such other Fundamental Document or the
Confirmation, as the case may be.

          (b)  Notwithstanding anything to the contrary contained in this
Article 3, the Indenture Trustee will distribute promptly upon receipt any
indemnity payment received by it from the Owner in respect of the Indenture
Trustee in its individual capacity, the Swap Counterparty, any Noteholder or any
other Indenture Indemnitee, in each case whether or not pursuant to Section 5(b)
of the Participation Agreement, directly to the Person entitled thereto, except
that any payment under Section 2.12 shall be distributed to the Subordination
Agent to be distributed in accordance with the terms of the Intercreditor
Agreement.

          Section 3.05  Other Payments.
                        --------------

          Any payments received by the Indenture Trustee for which no provision
as to the application thereof is made elsewhere in this Agreement or in any
other Fundamental Document or in the Confirmation shall be distributed by the
Indenture Trustee to the extent received or realized at any time prior to
payment of all Secured Obligations, in the order of priority specified in
Section 3.01 hereof, and after payment in full of all amounts then due in
accordance with Section 3.01 in the manner provided in clause "Seventh" of
Section 3.03 hereof.

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                                    [Trust Indenture and Mortgage ([_________])]

          Section 3.06  Payments to Owner.
                        -----------------

          Any amounts distributed hereunder by the Indenture Trustee to the
Owner shall be paid to the Owner (within the time limits contemplated by Section
2.08) by wire transfer of funds of the type received by the Indenture Trustee at
such office and to such account or accounts of the Owner as shall be designated
by notice from the Owner to the Indenture Trustee from time to time.

                                   ARTICLE 4

                              COVENANTS OF OWNER

          So long as the Airframe or any Engine is subject to the Lien of this
Agreement, the Owner covenants and agrees as follows:

          Section 4.01  Registration, Maintenance and Operation; Possession and
                        ---------------------------------------  --------------
Permitted Leases; Insignia.
--------------------------

          (a) (1)  Registration and Maintenance.  The Owner, at its own cost and
                   ----------------------------
expense, shall (or shall cause any Permitted Lessee to):  (i) on or prior to the
Closing Date, cause the Aircraft to be duly registered in its name, and, subject
to subparagraph (3) of this Section 4.01(a), to remain duly registered in its
name under the Federal Aviation Act; (ii) maintain, service, repair, and
overhaul (or cause to be maintained, serviced, repaired, and overhauled) the
Aircraft (and any engine which is not an Engine but which is installed on the
Aircraft) (x) so as at all times to keep the Aircraft in as good an operating
condition, ordinary wear and tear excepted, as may be necessary to enable the
airworthiness certification for the Aircraft to be maintained in good standing
at all times (other than during temporary periods of storage in accordance with
applicable regulations) under (I) the Federal Aviation Act, except when all of
Owner's [____________] aircraft (powered by engines of the same type as those
with which the Airframe shall be equipped at the time of such grounding)
registered in the United States have been grounded by the FAA unless such
grounding was caused by the failure of Owner to maintain, service, repair and
overhaul the Aircraft in accordance with the terms hereof, or (II) the
applicable laws of any other jurisdiction in which the Aircraft may then be
registered from time to time, except when all of Owner's [__________] aircraft
(powered by engines of the same type as those with which the Airframe shall be
equipped at the time of such grounding) registered in such jurisdiction have
been grounded by the aeronautical authority of such jurisdiction unless such
grounding was caused by the failure of Owner to maintain, service, repair and
overhaul the Aircraft in accordance with the terms hereof and (y) in
substantially the same manner as Owner (or any Permitted Lessee) maintains,
services, repairs or overhauls similar aircraft operated by Owner (or Permitted
Lessee) in similar circumstances and without discriminating against the
Aircraft; and (iii) maintain or cause to be maintained all records, logs and
other materials required to be maintained in respect of the Aircraft by the FAA
or the applicable regulatory agency or body of any other jurisdiction in which
the Aircraft may then be registered.

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                                    [Trust Indenture and Mortgage ([_________])]

          (2)  Operation.  Owner will not (or permit any Permitted Lessee to)
               ---------
     maintain, use, service, repair, overhaul or operate the Aircraft in
     violation of any material law or any rule, regulation, treaty, order or
     certificate of any government or governmental authority (domestic or
     foreign) having jurisdiction, or in violation of any airworthiness
     certificate, license or registration relating to the Aircraft issued by any
     such authority, except that, Owner or any Permitted Lessee may contest in
     good faith the validity or application of any such law, rule, regulation,
     order, certificate, license, registration or violation in any reasonable
     manner which does not materially adversely affect the Lien of this
     Agreement.  If the indemnities or insurance specified in Section 4.03(f),
     or some combination thereof in amounts equal to amounts required by Section
     4.03(f), have not been obtained, Owner will not operate the Aircraft, or
     permit any Permitted Lessee to operate the Aircraft, in or to any area
     excluded from coverage by any insurance required to be maintained by the
     terms of Section 4.03; provided, however, that the failure of Owner to
     comply with the provisions of this sentence shall not give rise to an
     Indenture Event of Default where such failure is attributable to a
     hijacking, medical emergency, equipment malfunction, weather conditions,
     navigational error or other isolated extraordinary event beyond the control
     of Owner and Owner is taking all reasonable steps to remedy such failure as
     soon as is reasonably practicable.

          (3)  Reregistration.  Subject to the terms and conditions of Section
               --------------
     6(a) of the Participation Agreement, the Owner may at any time cause the
     Aircraft to be re-registered under the laws of another country.

          (b)  Possession and Permitted Leases.  Owner will not, without the
               -------------------------------
prior written consent of Indenture Trustee, lease or otherwise in any manner
deliver, transfer or relinquish possession of the Airframe or any Engine or
install or permit any Engine to be installed on any airframe other than the
Airframe; provided that, so long as such action shall not deprive the Indenture
Trustee of the perfected Lien of this Agreement on the Airframe or any Engine,
Owner may, without the prior written consent of Indenture Trustee:

               (i)   subject the Airframe and the Engines or engines then
     installed thereon to normal interchange agreements or any Engine to normal
     pooling or similar arrangements, in each case customary in the airline
     industry and entered into by Owner (or any Permitted Lessee) in the
     ordinary course of its business with any air carrier; provided, that (A) no
     such agreement or arrangement contemplates or requires the transfer of
     title to the Airframe, and (B) if Owner's title to any Engine shall be
     divested under any such agreement or arrangement, such divestiture shall be
     deemed to be an Event of Loss with respect to such Engine and the Owner
     shall (or shall cause any Permitted Lessee to) comply with Section 5.01(b)
     hereof in respect thereof;

               (ii)  deliver possession of the Airframe or any Engine to the
     manufacturer thereof or to any other Person for testing, service, repair,
     maintenance or overhaul work on the Airframe or Engine or any Part of any
     thereof or for alterations or

                                       35
<PAGE>

                                    [Trust Indenture and Mortgage ([_________])]

     modifications in or additions to such Airframe or Engine to the extent
     required or permitted by the terms hereof;

               (iii)   install an Engine on an airframe owned by Owner (or any
     Permitted Lessee) which airframe is free and clear of all Liens, except:
     (A) Permitted Liens and those which apply only to the engines (other than
     Engines), appliances, parts, instruments, appurtenances, accessories,
     furnishings and other equipment (other than Parts) installed on such
     airframe (but not to the airframe as an entirety), (B) the rights of third
     parties under interchange agreements which would be permitted under clause
     (i) above, provided that Owner's title to such Engine shall not be divested
     as a result thereof and (C) mortgage Liens or other security interests,
     provided, that (as regards this clause (C)), such mortgage Liens or other
     security interests effectively provide that such Engine shall not become
     subject to the lien of such mortgage or security interest, notwithstanding
     the installation thereof on such airframe;

               (iv)    install an Engine on an airframe leased to Owner (or any
     Permitted Lessee) or purchased by Owner (or any Permitted Lessee) subject
     to a conditional sale or other security agreement, provided that (x) such
     airframe is free and clear of all Liens, except: (A) the rights of the
     parties to the lease or conditional sale or other security agreement
     covering such airframe, or their assignees, and (B) Liens of the type
     permitted by subparagraph (iii) of this Section 4.01(b) and (y) such lease,
     conditional sale or other security agreement effectively provides that such
     Engine shall not become subject to the Lien of such lease, conditional sale
     or other security agreement, notwithstanding the installation thereof on
     such airframe;

               (v)     install an Engine on an airframe owned by Owner (or any
     Permitted Lessee), leased to Owner (or any Permitted Lessee) or purchased
     by Owner (or any Permitted Lessee) subject to a conditional sale or other
     security agreement under circumstances where neither subparagraph (iii) nor
     subparagraph (iv) of this Section 4.01(b) is applicable, provided that any
     divestiture of title to such Engine resulting from such installation shall
     be deemed an Event of Loss with respect to such Engine and Owner shall (or
     shall cause any Permitted Lessee to) comply with Section 5.01(b) hereof in
     respect thereof, Indenture Trustee not intending hereby to waive any right
     or interest it may have to or in such Engine under applicable law until
     compliance by Owner with such Section 5.01(b);

               (vi)    to the extent permitted by Section 4.02(b) hereof,
     subject any appliances, Parts or other equipment owned by the Owner and
     removed from the Airframe or any Engine to any pooling arrangement referred
     to in Section 4.02(b) hereof;

               (vii)   transfer (or permit any Permitted Lessee to transfer)
     possession of the Airframe or any Engine to the United States of America or
     any instrumentality or agency thereof pursuant to the Civil Reserve Air
     Fleet Program so long as Owner (or any Permitted Lessee) shall promptly
     notify Indenture Trustee (x) upon transferring

                                       36
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                                    [Trust Indenture and Mortgage ([_________])]

     possession of the Airframe or any Engine to the United States of America or
     any agency or instrumentality thereof pursuant to the Civil Reserve Air
     Fleet Program and (y) of the name and the address of the Contracting Office
     Representative for the Military Airlift Command of the United States Air
     Force to whom notice must be given pursuant to Section 15 hereof;

               (viii)  transfer possession of the Airframe or any Engine to the
     United States of America or any instrumentality or agency thereof pursuant
     to a lease, contract or other instrument, a copy of which shall be provided
     to the Indenture Trustee; or

               (ix)    Owner may, at any time so long as no Indenture Default
under Section 8.01(a), (e) or (f) hereof or any Indenture Event of Default shall
have occurred and be continuing, enter into a lease of the Aircraft, Airframe or
any Engine with (1) a Certificated Air Carrier, (2) any other Permitted Air
Carrier, or (3) any other Person; provided that (A) no such lease shall be
permitted to a lessee that is subject to a proceeding or final order under
applicable bankruptcy, insolvency or reorganization laws on the date the lease
is entered into, (B) in the case of a lease under subclause (2) or (3) above, on
the date of such lease, the United States and the country in which such lessee
is domiciled and principally located maintain diplomatic relations (which for
purposes of this clause (ix) shall include Taiwan and any other country that is
similarly situated) and (C) in the case only of a lease to any Person under
subclause (3) above, the Indenture Trustee receives at the time of such lease an
opinion of counsel to the effect that there exist no possessory rights in favor
of the lessee under the laws of such lessee's country which would, upon
bankruptcy or insolvency of or other default by the Owner or the lessee, prevent
the return of such Engine or Airframe and such Engine or engine to the Indenture
Trustee in accordance with and when permitted by the terms of Section 8.03 upon
the exercise by the Indenture Trustee of its remedies pursuant to such Section.

          The rights of any Permitted Lessee or other transferee (other than a
transferee where the transfer is of an Engine which is deemed an Event of Loss)
shall be subject and subordinate to, all the terms of this Agreement (and any
Permitted Lease shall expressly state that it is so subject and subordinate),
including, without limitation, the Indenture Trustee's right to repossess the
Aircraft and to void any lease upon such repossession, and Owner shall remain
primarily liable for the performance of all of the terms of this Agreement, and
the terms of any such Permitted Lease shall not permit any Permitted Lessee to
take any action not permitted to be taken by Owner in this Agreement with
respect to the Aircraft.  No pooling agreement, Permitted Lease or other
relinquishment of possession of the Airframe or any Engine shall in any way
discharge or diminish any of Owner's obligations to the Indenture Trustee under
this Agreement or constitute a waiver of Indenture Trustee's rights or remedies
hereunder.  The Indenture Trustee agrees, for the benefit of Owner (and any
Permitted Lessee) and for the benefit of any mortgagee or other holder of a
security interest in any engine owned by Owner (or any Permitted Lessee), any
lessor of any engine other than an Engine leased to Owner (or any Permitted
Lessee) and any conditional vendor of any engine other than an Engine purchased
by Owner (or any Permitted Lessee) subject to a conditional sale agreement or
any other security agreement, that no interest shall be created under this
Agreement in any engine so owned, leased or purchased and that

                                       37
<PAGE>

                                    [Trust Indenture and Mortgage ([_________])]

neither the Indenture Trustee nor its successors or assigns will acquire or
claim, as against Owner (or any Permitted Lessee) or any such mortgagee, lessor
or conditional vendor or other holder of a security interest or any successor or
assignee of any thereof, any right, title or interest in such engine as the
result of such engine being installed on the Airframe; provided, however, that
such agreement of Indenture Trustee shall not be for the benefit of any lessor
or secured party of an airframe leased to Owner (or any Permitted Lessee) or
purchased by Owner (or any Permitted Lessee) subject to a conditional sale or
other security agreement or for the benefit of any mortgagee or any other holder
of a security interest in an airframe owned by Owner (or any Permitted Lessee),
on which airframe Owner (or any Permitted Lessee) then proposes to install an
Engine, unless such lessor, conditional vendor, other secured party or mortgagee
has expressly agreed (which agreement may be contained in such lease,
conditional sale or other security agreement or mortgage) that neither it nor
its successors or assigns will acquire, as against Indenture Trustee, any right,
title or interest in an Engine as a result of such Engine being installed on
such airframe. Owner shall provide the Indenture Trustee and the Rating Agencies
with a copy of any Permitted Lease or any instrument evidencing a transfer
pursuant to paragraph (viii) of this Section 4.01(b), in either case having a
term of more than one (1) year, as promptly as practicable after entering into
such Permitted Lease or other transfer.

          Any Wet Lease or similar arrangement under which Owner maintains
operational control of the Aircraft shall not constitute a delivery, transfer or
relinquishment of possession for purposes of this Section 4.01.  The Indenture
Trustee acknowledges that any consolidation or merger of Owner or conveyance,
transfer or lease of all or substantially all of Owner's assets permitted by the
Operative Documents shall not be prohibited by this Section 4.01.

          (c)  Insignia.  On or prior to the Closing Date, or as soon thereafter
               --------
as practicable, Owner agrees to affix and maintain (or cause to be affixed and
maintained) in the cockpit of the Airframe adjacent to the registration
certificate therein and on each Engine a nameplate bearing the inscription:

                                 Mortgaged To

                      State Street Bank and Trust Company
          of Connecticut, National Association, as Indenture Trustee

(such nameplate to be replaced, if necessary, with a nameplate reflecting the
name of any successor Indenture Trustee, in each case as permitted under the
Operative Documents).

          Except as above provided, Lessee will not allow the name of any Person
to be placed on the Airframe or on any Engine as a designation that might be
interpreted as a claim of ownership; provided, that nothing herein contained
shall prohibit Owner (or any Permitted Lessee) from placing its customary colors
and insignia on the Airframe or any Engine.

          (d)  Substitution of Engines.  The Owner may at any time, at no cost
               -----------------------
to the Indenture Trustee, replace any Engine subjected to the Lien hereof by
causing an Acceptable

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                                    [Trust Indenture and Mortgage ([_________])]

Alternate Engine to be substituted for such Engine hereunder in accordance with
the provisions of Section 5.01(b) hereof to the same extent as if an Event of
Loss has occurred with respect to such Engine.

          Section 4.02  Replacement and Pooling of Parts; Alterations,
                        ----------------------------------------------
Modifications and Additions.
---------------------------

          (a)  Replacement of Parts.  Owner, at its own cost and expense, will
               --------------------
promptly replace or cause to be replaced all Parts which may from time to time
become worn out, lost, stolen, destroyed, seized, confiscated, damaged beyond
repair or permanently rendered unfit for use for any reason whatsoever, except
as otherwise provided in Section 4.02(c).  In addition, the Owner (or any
Permitted Lessee) may, at its own cost and expense, remove in the ordinary
course of maintenance, service, repair, overhaul or testing, any Parts, whether
or not worn out, lost, stolen, destroyed, seized, confiscated, damaged beyond
repair or permanently rendered unfit for use for, provided that the Owner (or
any Permitted Lessee), except as otherwise provided in paragraph (c) of this
Section 4.02, will, at its own cost and expense, replace such Parts as promptly
as practicable.  All replacement Parts shall be owned by Owner free and clear of
all Liens (except Permitted Liens, pooling arrangements permitted by Section
4.02(b) hereof and replacement Parts temporarily installed on an emergency
basis) and shall be in as good operating condition as, and shall have a value
and utility substantially equal to, the Parts replaced assuming such replaced
Parts were in the condition and repair required to be maintained by the terms
hereof.  All Parts at any time removed from the Airframe or any Engine shall
remain subject to the Lien of this Agreement, no matter where located, until
such time as such Parts shall be replaced by Parts which meet the requirements
for replacement Parts specified above. Immediately upon any replacement Part
becoming incorporated or installed in or attached to the Airframe or any Engine,
without further act (subject only to Permitted Liens and any pooling arrangement
permitted by Section 4.02(b) hereof and except replacement Parts temporarily
installed on an emergency basis), (i) such replacement Part shall become subject
to the Lien of this Agreement and be deemed a Part for all purposes hereof to
the same extent as the Parts originally incorporated or installed in or attached
to the Airframe or such Engine and (ii) the replaced Part shall be free and
clear of all rights of the Indenture Trustee and shall no longer be deemed a
Part hereunder.

          (b)  Pooling of Parts.  Any Part removed from the Airframe or any
               ----------------
Engine as provided in Section 4.02(a) hereof may be subjected by Owner (or any
Permitted Lessee) to a pooling arrangement of the type which is permitted by
Section 4.01(b)(i) hereof; provided, that the Part replacing such removed Part
shall be incorporated or installed in or attached to such Airframe or Engine in
accordance with Section 4.02(a) as promptly as practicable after the removal of
such removed Part.  In addition, any replacement Part when incorporated or
installed in or attached to the Airframe or an Engine in accordance with such
Sections may be owned by any third party subject to such a pooling arrangement,
provided, that Owner (or any Permitted Lessee), at its expense, as promptly
thereafter as practicable, either (i) causes such replacement Part to become
subject to the Lien of this Agreement, free and clear of all Liens other than
Permitted Liens or (ii) replaces such replacement Part with a further
replacement Part owned by

                                       39
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                                    [Trust Indenture and Mortgage ([_________])]

Owner (or any Permitted Lessee) which shall become subject to the Lien of this
Agreement, free and clear of all Liens other than Permitted Liens.

          (c)  Alterations, Modifications and Additions.  Owner, at its own
               ----------------------------------------
expense, will make (or cause to be made) such alterations and modifications in
and additions to the Airframe and Engines as may be required to be made from
time to time so as to meet the applicable standards of the FAA or of any
regulatory agency or body of any jurisdiction in which the Aircraft may then be
registered; provided, however, that, Owner or any Permitted Lessee may, in good
faith, and by appropriate proceedings contest the validity or application of any
such law, rule, regulation or order in any reasonable manner which does not
materially adversely affect the Lien of this Agreement.  In addition, Owner (or
any Permitted Lessee), at its own expense, may from time to time make such
alterations and modifications in and additions to the Airframe or any Engine as
Owner (or any Permitted Lessee) may deem desirable in the proper conduct of its
business, including removal of Parts which Owner (or any Permitted Lessee) deems
to be obsolete or no longer suitable or appropriate for use on the Airframe or
such Engine (such parts, "Obsolete Parts"); provided that no such alteration,
modification, removal or addition diminishes the condition or airworthiness of
the Airframe or such Engine, or materially diminishes the value, utility or, in
regard to the Airframe, remaining useful life of the Airframe or such Engine
below the condition, airworthiness, value, utility or, in regard to the
Airframe, remaining useful life thereof immediately prior to such alteration,
modification, removal or addition assuming the Airframe or such Engine was then
in the condition required to be maintained by the terms of this Agreement.  In
addition, the value (but not the utility, condition or airworthiness) of the
Airframe or any Engine may be reduced by the value, if any, of Obsolete Parts
which shall have been removed so long as the aggregate value of all Obsolete
Parts which shall have been removed and not replaced shall not exceed the
Obsolete Parts Cap.  All Parts incorporated or installed in or attached or added
to the Airframe or an Engine as the result of such alteration, modification or
addition (except those parts which are excluded from the definition of Parts or
which may be removed by Owner pursuant to the next sentence) (the "Additional
Parts") shall, without further act, become subject to the Lien of this
Agreement.  Notwithstanding the foregoing sentence, Owner (or any Permitted
Lessee), may, at its own expense, at any time, so long as no Indenture Event of
Default shall have occurred and be continuing, remove or suffer to be removed
any Additional Part, provided that such Additional Part (i) is in addition to,
and not in replacement of or substitution for, any Part originally incorporated
or installed in or attached to such Airframe or any Engine at the time of
delivery thereof hereunder or any Part in replacement of or substitution for any
such Part, (ii) is not required to be incorporated or installed in or attached
or added to the Airframe or any Engine pursuant to the terms of Section 4.01
hereof or the first sentence of this paragraph (c) and (iii) can be removed from
the Airframe or such Engine without diminishing the condition, airworthiness,
value or utility of the Airframe or such Engine which the Airframe or such
Engine would have had at such time had such alteration, modification or addition
not occurred.  Upon the removal thereof as provided above, such Additional Part
shall no longer be deemed to be subject to the Lien of this Agreement or part of
the Airframe or Engine from which it was removed.

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                                    [Trust Indenture and Mortgage ([_________])]

          (d)  Certain Matters Regarding Passenger Convenience Equipment.  Owner
               ---------------------------------------------------------
may at any time and from time to time install on the Airframe Passenger
Convenience Equipment that is (i) owned by another Person and leased to Owner,
(ii) sold to Owner by another Person subject to a conditional sale contract or
other retained security interest, (iii) leased to Owner pursuant to a lease
which is subject to a security interest in favor of another Person or (iv)
installed on the Aircraft subject to a license granted to Owner by another
Person, and in any such case the Indenture Trustee will not acquire or claim, as
against any such other Person, any right, title or interest in any such
Passenger Convenience Equipment solely as a result of its installation on the
Airframe.

          Section 4.03  Insurance.
                        ---------

          (a)  Public Liability and Property Damage Insurance.  (1) Except as
               ----------------------------------------------
provided in clause (2) of this Section 4.03(a), and subject to self-insurance to
the extent permitted by Section 4.03(d) hereof, Owner will carry or cause to be
carried with respect to the Aircraft at its or any Permitted Lessee's expense
(i) comprehensive airline liability (including, without limitation, passenger,
contractual, bodily injury, and property damage liability) insurance (exclusive
of manufacturer's product liability insurance and including, without limitation,
aircraft war risk and hijacking insurance, if and to the extent the same is
maintained by Owner (or Permitted Lessee) with respect to other aircraft owned
or leased, and operated by Owner (or Permitted Lessee) on the same routes) and
(ii) cargo liability insurance, (A) in an amount not less than the greater of
(x) the amounts of comprehensive airline liability insurance from time to time
applicable to aircraft owned or leased and operated by Owner of the same type as
the Aircraft and (y) the Minimum Liability Insurance Amount, (B) of the type and
covering the same risks as from time to time are applicable to aircraft owned or
leased and operated by Owner of the same type as the Aircraft, and (C) which is
maintained in effect with insurers of recognized reputation and responsibility;
provided, however, that Owner need not maintain cargo liability insurance, or
may maintain such insurance in an amount less than the Minimum Liability
Insurance Amount, as long as the amount of cargo liability insurance, if any,
maintained with respect to the Aircraft is the same as the cargo liability
insurance, if any, maintained for other [__________] aircraft owned or leased,
and operated by Owner.

          (2)  During any period that the Airframe or an Engine, as the case may
     be, is on the ground and not in operation, Owner may carry or cause to be
     carried as to such non-operating property, in lieu of the insurance
     required by clause (1) above, and subject to the self-insurance to the
     extent permitted by Section 4.03(d) hereof, insurance by insurers of
     recognized reputation and responsibility otherwise conforming with the
     provisions of clause (1) except that (A) the amounts of coverage shall not
     be required to exceed the amounts of comprehensive airline liability
     insurance from time to time applicable to property owned or leased by Owner
     of the same type as such non-operating property and which is on the ground
     and not in operation; and (B) the scope of the risks covered and the type
     of insurance shall be the same as from time to time shall be applicable to
     property owned or leased by Owner of the same type as such non-operating
     property and which is on the ground and not in operation.

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                                    [Trust Indenture and Mortgage ([_________])]

          (b)  Insurance Against Loss or Damage to the Aircraft.  (1) Except as
               ------------------------------------------------
provided in clause (2) of this Section 4.03(b), and subject to the provisions of
Section 4.03(d) hereof permitting self-insurance, Owner shall maintain or cause
to be maintained in effect, at its or any Permitted Lessee's expense, with
insurers of recognized reputation and responsibility, all-risk aircraft hull
insurance covering the Aircraft and fire and extended coverage and all-risk
aircraft hull insurance covering Engines and Parts while temporarily removed
from the Aircraft and not replaced by similar components (including, without
limitation, aircraft war risk and governmental confiscation and expropriation
(other than by the government of registry of the Aircraft) and hijacking
insurance, if and to the extent the same is maintained by Owner (or any
Permitted Lessee) with respect to other aircraft owned or leased, and operated
by Owner (or such Permitted Lessee) on the same routes); provided, that such
insurance shall at all times while the Aircraft is subject to this Agreement be
for an amount (taking into account self-insurance to the extent permitted by
Section 4.03(d) hereof) not less than the Insured Amount for the Aircraft; and
provided further, that subject to compliance with Section 4.03(d) hereof, such
all-risk property damage insurance covering Engines and Parts while temporarily
removed from the Airframe or an airframe of (in the case of Parts) an Engine
need be obtained only to the extent available at reasonable cost (as reasonably
determined by Owner).  In the case of a loss with respect to an engine (other
than an Engine) installed on the Airframe in circumstances which do not
constitute an Event of Loss with respect to the Airframe, the Indenture Trustee
shall promptly remit any payment made to it of any insurance proceeds in respect
of such loss to Owner or any other third party that is entitled to receive such
proceeds.

          All losses will be adjusted by Owner with the insurers; provided,
however, that during a period when any Indenture Event of Default shall have
occurred and be continuing, Owner shall not agree to any such adjustment without
the consent of the Indenture Trustee.  As between the Indenture Trustee and
Owner, it is agreed that all proceeds of insurance maintained in compliance with
the preceding paragraph and received as the result of the occurrence of an Event
of Loss will be applied as follows:

               (x)  if such payments are received with respect to the Airframe
     (or the Airframe and the Engines installed thereon), (i) unless such
     property is replaced pursuant to the last paragraph of Section 5.01(a)
     hereof, such payments shall be applied in reduction of Owner's obligation
     to pay such amounts payable under Section 5.01(a) hereof, if not already
     paid by Owner, or, if already paid by Owner, shall be applied to reimburse
     Owner for its payment of such amounts payable under Section 5.01(a) hereof,
     and the balance, if any, of such payments remaining thereafter will be paid
     over to, or retained by, Owner (or if directed by Owner, any Permitted
     Lessee); or (ii) if such property is replaced pursuant to Section 5.01(a)
     hereof, such payments shall be paid over to, or retained by, Owner (or if
     directed by Owner, any Permitted Lessee), provided that Owner shall have
     fully performed or, concurrently therewith, will fully perform the terms of
     Section 5.01(a) hereof with respect to the Event of Loss for which such
     payments are made; and

                                       42
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                                    [Trust Indenture and Mortgage ([_________])]

               (y)  if such payments are received with respect to an Engine
     under the circumstances contemplated by Section 5.01(b) hereof, such
     payments shall be paid over to, or retained by, Owner (or if directed by
     Owner, any Permitted Lessee), provided that either (i) such payments are
     less than the Loss Payee Amount or (ii) Owner shall have fully performed
     or, concurrently therewith, will fully perform the terms of Section 5.01(b)
     hereof with respect to the Event of Loss for which such payments are made.

          (2)  During any period that the Aircraft is on the ground and not in
operation, Owner may carry or cause to be carried, in lieu of the insurance
required by clause (1) above, and subject to the self-insurance to the extent
permitted by Section 4.03(d) hereof, insurance otherwise conforming with the
provisions of said clause (1) except that the scope of the risks and the type of
insurance shall be the same as from time to time applicable to aircraft owned or
leased by Owner of the same type as the Aircraft similarly on the ground and not
in operation, provided that, subject to the self-insurance to the extent
permitted by Section 4.03(d) hereof, Owner shall maintain insurance against risk
of loss or damage to the Aircraft in an amount at least equal to the Insured
Amount of the Aircraft during such period that the Aircraft is on the ground and
not in operation.

          (c)  Reports, etc.  Owner will furnish, or cause to be furnished, to
               ------------
the Indenture Trustee on or before the Closing Date, and each annual renewal of
the applicable insurances, a report, signed by AON Risk Services of Illinois,
Inc. or any other independent firm of insurance brokers reasonably acceptable to
the Indenture Trustee which brokers may be in the regular employ of Owner (the
"Insurance Brokers"), describing in reasonable detail the hull and liability
insurance (and property insurance for detached engines and parts) then carried
and maintained with respect to the Aircraft and stating the opinion of such firm
that such insurance complies with the terms hereof; provided that all
information contained in the foregoing report shall not be made available by the
Indenture Trustee to anyone except (A) to any Noteholder's or to prospective and
permitted transferees of Indenture Trustee's or any Noteholder's interest or its
respective counsel, independent certified public accountants, independent
insurance brokers or other agents, who agree to hold such information
confidential, (B) to the Indenture Trustee's counsel or independent certified
public accountants, independent insurance brokers or other agents who agree to
hold such information confidential, (C) as may be required by any statute, court
or administrative order or decree or governmental ruling or regulation, or (D)
as may be necessary for purposes of protecting the interest of any such Person
or for enforcement of this Agreement by the Indenture Trustee; provided,
further, that any and all disclosures permitted by clauses (C) or (D) above
shall be made only to the extent necessary to meet the specific requirements or
needs of the Persons to whom such disclosures are hereby permitted.  Owner will
cause such Insurance Broker to agree to advise the Indenture Trustee in writing
of any act or omission on the part of Owner of which it has knowledge and which
might invalidate or render unenforceable, in whole or in part, any insurance on
the Aircraft and to advise the Indenture Trustee in writing at least 30 days (7
days in the case of war risk and allied perils coverage) prior to the
cancellation or material adverse change of any insurance maintained pursuant to
this Section 4.03; provided that if the notice period specified above is not
reasonably obtainable, the Insurance Broker shall provide for as long a period
of prior notice as shall then be reasonably

                                       43
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                                    [Trust Indenture and Mortgage ([_________])]

obtainable. In the event that Owner or any Permitted Lessee shall fail to
maintain or cause to be maintained insurance as herein provided, the Indenture
Trustee or Pass Through Trustee may, at its sole option, but shall be under no
duty to, provide such insurance and, in such event, Owner shall, upon demand,
reimburse the Indenture Trustee or Pass Through Trustee for the cost thereof to
the Indenture Trustee or Pass Through Trustee, as the case may be; provided,
however, that no exercise by the Indenture Trustee or Pass Through Trustee, as
the case may be, of said option shall affect the provisions of this Agreement,
including the provisions that failure by Owner to maintain the prescribed
insurance shall constitute an Event of Default.

          (d)  Self-Insurance.  Owner may self-insure the risks required to be
               --------------
insured against pursuant to this Section 4.03 under a program applicable to all
aircraft (whether owned or leased) in Owner's fleet, but in no case shall the
aggregate amount of such self-insurance in regard to Sections 4.03(a) and
4.03(b) hereof exceed for any calendar year, with respect to all of the aircraft
(whether owned or leased) in Owner's fleet (including, without limitation, the
Aircraft) the lesser of (A) the highest replacement value of any single aircraft
in Owner's fleet or (B) 1-1/2% of the average aggregate insurable value (during
the preceding calendar year) of all aircraft (including, without limitation, the
Aircraft) on which Owner carries insurance.  In addition to the foregoing right
to self-insure, Owner (and any Permitted Lessee) may self-insure, to the extent
of any applicable mandatory minimum per aircraft (or, if applicable, per annum
or other period) the hull or liability insurance deductible imposed by the
aircraft hull or liability insurer.

          (e)  Additional Insurance by Owner.  Owner (and any Permitted Lessee)
               -----------------------------
may at its own expense carry insurance with respect to its interest in the
Aircraft in amounts in excess of that required to be maintained by this Section
4.03; provided, however, that no insurance may be obtained or maintained that
      --------
would limit or otherwise adversely affect the coverage of any insurance required
to be obtained or maintained by Owner pursuant to this Agreement.

          (f)  Indemnification by Government in Lieu of Insurance.
               --------------------------------------------------
Notwithstanding any provisions of this Section 4.03 requiring insurance, the
Indenture Trustee agrees to accept, in lieu of insurance against any risk with
respect to the Aircraft, indemnification from, or insurance provided by, the
United States Government, against such risk in an amount which, when added to
the amount of insurance against such risk maintained by Owner (or any Permitted
Lessee) shall be at least equal to the amount of insurance against such risk
otherwise required by this Section 4.03 (taking into account self-insurance
permitted by Section 4.03(d) hereof).

          (g)  Terms of Insurance Policies.  Any policies carried in accordance
               ---------------------------
with Sections 4.03(a) and 4.03(b) hereof covering the Aircraft, and any policies
taken out in substitution or replacement for any such policies, (A) shall name
the Additional Insureds as additional insureds, or, if appropriate (but subject
to clause (H) below), loss payees, as their respective interests may appear (but
without imposing on any such party liability to pay premiums with respect to
such insurance), (B) may provide for self-insurance to the extent permitted in
Section 4.03(d) hereof, (C) shall provide that if the insurers cancel such
insurance for any reason whatever, or if the same is allowed to lapse for non-
payment of premium or if any

                                       44
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                                    [Trust Indenture and Mortgage ([_________])]

material change is made in the insurance which adversely affects the interest of
any Additional Insured, such lapse, cancellation or change shall not be
effective as to any Additional Insured for thirty days (seven days in the case
of war risk and allied perils coverage) after receipt by such Additional Insured
of written notice by such insurers of such lapse, cancellation or change;
provided, however, that if any notice period specified above is not reasonably
obtainable, such policies shall provide for as long a period of prior notice as
shall then be reasonably obtainable, (D) shall provide that in respect of the
respective interests of each Additional Insured in such policies the insurance
shall not be invalidated by any action or inaction of Owner (or any Permitted
Lessee) or any other Person and shall insure the respective interests of the
Additional Insureds, as they appear, regardless of any breach or violation of
any warranty, declaration or condition contained in such policies by Owner (or
any Permitted Lessee) or by any other Person, (E) shall be primary without any
right of contribution from any other insurance which is carried by any
Additional Insured, (F) shall expressly provide that all of the provisions
thereof, except the limits of liability, shall operate in the same manner as if
there were a separate policy covering each insured, (G) shall waive any right of
the insurers to set-off or counterclaim or any other deduction, whether by
attachment or otherwise, in respect of any liability of any Additional Insured,
and (H) shall provide that (i) in the event of a loss involving the Aircraft,
Airframe, or an Engine for which proceeds are in excess of the Loss Payee
Amount, the proceeds in respect of such loss up to the amount of the Insured
Amount for the Aircraft shall be payable to the Indenture Trustee, it being
understood and agreed that in the case of any payment to the Indenture Trustee
otherwise than in respect of an Event of Loss, the Indenture Trustee shall, upon
receipt of evidence reasonably satisfactory to it that the damages giving rise
to such payment shall have been repaired or that such payment shall then be
required to pay for repairs then being made, pay the amount of such payment, and
any interest or income earned thereon in accordance with Section 9.04 hereof, to
Owner or its order, and (ii) the entire amount of any such loss for which
proceeds are equal to or less than the Loss Payee Amount or the amount of any
proceeds of any such loss in excess of the Insured Amount for the Aircraft shall
be paid to Owner or its order unless a Section 8.01(a)(i), 8.01(e) or 8.01(f)
Indenture Default or any Indenture Event of Default shall have occurred and be
continuing and the insurers have been notified thereof by the Indenture Trustee
in which case such proceeds shall be payable to the Indenture Trustee.

          (h)  Application of Payments During Existence of Certain Indenture
               -------------------------------------------------------------
Events of Default.  Any amount referred to in this Section 4.03 which is payable
-----------------
to or retainable by Owner (or any Permitted Lessee) shall not be paid to or
retained by Owner (or any Permitted Lessee) if at the time of such payment or
retention an Indenture Default of the type described in Section 8.01(a)(i),
8.01(e) or 8.01(f) or any Indenture Event of Default shall have occurred and be
continuing, but shall be held by or paid over to Indenture Trustee as security
for the obligations of Owner under this Agreement and applied against Owner's
obligations hereunder as and when due.  At such time as there shall not be
continuing any such Indenture Default or Indenture Event of Default, such amount
shall be paid to Owner to the extent not previously applied in accordance with
the preceding sentence.

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                                    [Trust Indenture and Mortgage ([_________])]

          Section 4.04  Inspection.  At reasonable times not more often than
                        ----------
once in any twelve (12) month period, and upon at least 20 days prior written
notice to Owner (provided however that if an Indenture Event of Default shall
have occurred and be continuing, any such inspection shall be at reasonable
times without any limit on the number of times and upon at least 5 days prior
written notice to Owner), the Indenture Trustee or its respective authorized
representatives may inspect the Aircraft and inspect and make copies of the
books and records of Owner and any Permitted Lessee required to be maintained by
the FAA or the regulatory agency or body of another jurisdiction in which the
Aircraft is then registered relating to the maintenance of the Aircraft (at the
Indenture Trustee's risk and expense) and shall keep any information or copies
obtained thereby confidential and shall not disclose the same to any Person,
except (A) to the Pass Through Trustees and to prospective and permitted
transferees of any Pass Through Trustee's or the Indenture Trustee's interest
(and such prospective and permitted transferee's counsel, independent insurance
advisors or other agents) who agree to hold such information confidential, (B)
to any Pass Through Trustee's or the Indenture Trustee's counsel, independent
insurance advisors or other agents who agree to hold such information
confidential, (C) as may be required by any statute, court or administrative
order or decree or governmental ruling or regulation, and (D) as may be
necessary for purposes of protecting the interest of any such Person or for
enforcement of this Agreement by the Indenture Trustee; provided, however, that
any and all disclosures permitted by clauses (C) and (D) above shall be made
only to the extent necessary to meet the specific requirements or needs of
Persons for whom such disclosures are hereby permitted. Any such inspection of
the Aircraft shall be subject to Owner's safety and security rules applicable at
the location of the Aircraft, shall be a visual, walk-around inspection of the
interior and exterior of the Aircraft and shall not include opening any panels,
bays or the like without the express consent of Owner (except in connection with
a heavy maintenance visit when a panel, bay or the like is scheduled or required
to be opened), which consent Owner may in its sole discretion withhold; provided
that no exercise of such inspection right shall interfere with the normal
operation or maintenance of the Aircraft by, or the business of, Owner (or any
Permitted Lessee). The Indenture Trustee shall have no duty to make any such
inspection and shall incur no liability or obligation by reason of not making
any such inspection.

                                    ARTICLE 5

                                 EVENT OF LOSS

          Section 5.01  (a)  Event of Loss with Respect to the Aircraft.  Upon
                             ------------------------------------------
the occurrence of an Event of Loss with respect to the Airframe or the Airframe
and the Engines and/or engines then installed thereon, Owner shall (1) forthwith
(and in any event, within fifteen days after such occurrence) give the Indenture
Trustee written notice of such Event of Loss and (2) within 60 days after such
occurrence, give the Indenture Trustee written notice of its election to perform
one of the following options (it being understood that the failure to give such
notice shall be deemed to be an election of the option set forth in clause (i)
below):

               (i)      Not later than the earlier of (x) the first Business Day
     next succeeding the 100th day following the occurrence of such Event of
     Loss or (y) the first

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                                    [Trust Indenture and Mortgage ([_________])]

     Business Day that is at least three Business Days after receipt by the loss
     payee of the insurance proceeds with respect to such Event of Loss (but not
     earlier than the first Business Day next succeeding the 65th day following
     the occurrence of such Event of Loss) (the applicable day being the "Loss
     Payment Date"), Owner shall, to the extent not paid to the Indenture
     Trustee as insurance proceeds, pay or cause to be paid to the Indenture
     Trustee an amount sufficient to satisfy the Owner's obligations under
     Section 6.01(a)(i) and to redeem the Notes as provided in Section
     6.01(a)(ii); or

               (ii)   Not later than the first Business Day next succeeding the
     100th day following the occurrence of such Event of Loss, Lessee shall
     substitute an aircraft or an airframe or an airframe and one or more
     engines, as the case may be, in accordance with the terms hereof, provided
     that if (A) an Indenture Event of Default (other than as a direct result of
     such Event of Loss) shall have occurred and be continuing as of such
     election date or (B) Lessee shall have elected to make a substitution under
     this clause (ii) and shall fail for any reason to make such substitution in
     accordance with the terms hereof, then Lessee shall make the payments
     required by clause (i) above on such date.

          At such time as Lessor shall have received the sum of the amounts
specified in clause (i) above, the Indenture Trustee shall release from the Lien
of this Agreement the Aircraft by executing and delivering to the Owner all
documents and instruments as the Owner may reasonably request to evidence such
release.

          The Owner's right to substitute a Replacement Airframe and Replacement
Engines, if any, as provided in Section 5.01(a)(ii) shall be subject to the
fulfillment, at the Owner's sole cost and expense, to conditions precedent:

          (i)  on the date when the Replacement Airframe and Replacement
     Engines, if any, is subjected to the Lien of this Agreement (such date
     being referred to in this Section 5.01 as the "Replacement Closing Date"),
     the following documents shall have been duly authorized, executed and
     delivered by the respective party or parties thereto and shall be in full
     force and effect, and an executed counterpart of each thereof (or, in the
     case of the FAA Bill of Sale and full warranty bill of sale referred to
     below, a photocopy thereof) shall have been delivered to the Indenture
     Trustee:

               (A)   an Indenture Supplement covering the Replacement Airframe
          and Replacement Engines, if any, which shall have been duly filed for
          recordation pursuant to the Federal Aviation Act or such other
          applicable law of such jurisdiction other than the United States in
          which the Replacement Airframe and Replacement Engines, if any, are to
          be registered in accordance with Section 4.01(a)(3), as the case may
          be;

               (B)   an FAA Bill of Sale (or a comparable document, if any, of
          another aviation authority, if applicable) covering the Replacement
          Airframe and

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                                    [Trust Indenture and Mortgage ([_________])]

          Replacement Engines, if any, executed by the former owner thereof in
          favor of the Owner;

                 (C)   a full warranty (as to title) bill of sale, covering the
          Replacement Airframe and Replacement Engines, if any, executed by the
          former owner thereof in favor of the Owner (or, at the Owner's option,
          other evidence of the Owner's ownership of such Replacement Airframe
          and Replacement Engines, if any, reasonably satisfactory to the
          Indenture Trustee); and

                 (D)   Uniform Commercial Code financing statements (or any
          similar statements or other documents required to be filed or
          delivered pursuant to the laws of the jurisdiction in which the
          Replacement Airframe and Replacement Engines, if any, may be
          registered in accordance with Section 4.01(a)(3)) as are deemed
          necessary or desirable by counsel for the Indenture Trustee to protect
          the security interests of the Indenture Trustee in the Replacement
          Airframe and Replacement Engines, if any;

          (ii)   the Replacement Airframe shall be of the same or an improved
     make and model as the Airframe replaced and each Replacement Engine shall
     be an Acceptable Alternate Engine, and the Replacement Airframe and
     Replacement Engines, if any, have a value and utility (with respect to
     Engines, without regard to hours or cycles) at least equal to, and be in as
     good operating condition and repair as, the Airframe and any Engines
     replaced (assuming that such Airframe and Engines were in the condition
     required by the terms hereby) as evidenced by a certificate of an aircraft
     engineer (who may be an employee of the Owner) or an appraisal from an
     independent aircraft appraiser;

          (iii)  the Indenture Trustee (acting directly or by authorization to
     its special counsel) shall have received satisfactory evidence as to the
     compliance with Section 4.03 with respect to the Replacement Airframe and
     Replacement Engines, if any;

          (iv)   the Indenture Trustee at the expense of the Owner, shall have
     received (acting directly or by authorization to its special counsel) (A)
     an opinion of counsel to Owner (which may be Owner's General Counsel),
     addressed to the Indenture Trustee, to the effect that the Replacement
     Airframe and Replacement Engine, if any, has or have duly been made subject
     to the Lien of this Agreement, that all required action has been taken in
     order to maintain, and such action shall maintain, the effectiveness and
     priority (to the extent the same existed immediately prior to the
     occurrence of such Event of Loss, assuming the Owner was in compliance with
     all relevant terms hereof) of the security interests in the Airframe, the
     Engines and title thereto created by this Agreement and that the
     protections afforded to the Indenture Trustee by Section 1110 of the
     Bankruptcy Code will not be less than such protections immediately prior to
     the occurrence of such Event of Loss (assuming the Owner was in compliance
     with all relevant terms hereof) and (B) an opinion of qualified FAA counsel
     (or counsel in any jurisdiction outside the United States where the
     Aircraft may be registered in accordance with Section 4.01(a)(3)),

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     addressed to the Indenture Trustee, as to, in the case of FAA counsel, the
     due recordation of the Indenture Supplement and all other documents or
     instruments the recordation of which is necessary to perfect and protect
     the rights of the Indenture Trustee in the Replacement Airframe and
     Replacement Engines, if any, or, in the case of counsel in another
     jurisdiction, the taking of all action necessary in such jurisdiction for
     such purposes; and

          (v)  the Indenture Trustee (acting directly or by authorization to
     special counsel) shall have received an officer's certificate of Owner
     stating that, in the opinion of the signer, all conditions precedent
     provided for in this Section 5.01(a) relating to such replacement have been
     complied with.

          Upon satisfaction of all conditions to such substitution, (x) the
Indenture Trustee shall execute and deliver to the Owner such documents and
instruments, prepared at the Owner's expense, as the Owner shall reasonably
request to evidence the release of such replaced Airframe and Engines, if any,
from the Lien of this Agreement, (y) the Indenture Trustee shall assign to the
Owner all claims it may have against any other Person relating to any Event of
Loss giving rise to such substitution and (z) the Owner shall receive all
insurance proceeds and proceeds in respect of any Event of Loss giving rise to
such replacement.  For all purposes hereof, the property so substituted shall
after such transfer be deemed to be subjected to the Lien of this Agreement and
shall be deemed an "Aircraft," "Airframe" and "Engine," as the case may be, as
defined herein.

          (b)  Event of Loss with Respect to an Engine.  Upon the occurrence of
               ---------------------------------------
an Event of Loss with respect to an Engine under circumstances in which there
has not occurred an Event of Loss with respect to the Airframe, Owner shall
forthwith (and in any event, within fifteen days after such occurrence) give the
Indenture Trustee written notice thereof and shall, within sixty (60) days after
the occurrence of such Event of Loss, substitute an Acceptable Alternate Engine
free and clear of all Liens (other than Permitted Liens) in as good an operating
condition as, the Engine subject to such Event of Loss and cause such Acceptable
Alternate Engine to be subjected to the Lien of this Agreement.  The Owner's
right to make a replacement hereunder shall be subject to the fulfillment (which
may be simultaneous with such replacement) of the following conditions precedent
at the Owner's sole cost and expense and the Indenture Trustee agrees to
cooperate with the Owner to the extent necessary to enable it to timely satisfy
such conditions:

          (i)  the following documents shall be duly authorized, executed and
     delivered by the respective party or parties thereto, and an executed
     counterpart of each shall be delivered to the Indenture Trustee:

               (A)  an Indenture Supplement covering the Replacement Engine,
          which shall have been duly filed for recordation pursuant to the
          Federal Aviation Act or such other applicable law of the jurisdiction
          other than the United States in which the Aircraft of which such
          Engine is a part is registered in accordance with Section 4.01(a)(3),
          as the case may be;

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                                    [Trust Indenture and Mortgage ([_________])]

                (B)  a full warranty bill of sale (as to title) covering the
          Replacement Engine, executed by the former owner thereof in favor of
          the Owner (or, at the Owner's option, other evidence of the Owner's
          ownership of such Replacement Engine, reasonably satisfactory to the
          Indenture Trustee); and

                (C)  Uniform Commercial Code financing statements covering the
          security interests created by this Agreement (or any similar
          statements or other documents required to be filed or delivered
          pursuant to the laws of the jurisdiction in which such Aircraft may be
          registered) as are deemed necessary or desirable by counsel for the
          Indenture Trustee to protect the security interests of the Indenture
          Trustee in the Replacement Engine;

          (ii)  the Owner shall cause to be delivered to the Indenture Trustee,
     if requested by it, an opinion of counsel (which may be Owner's General
     Counsel) to the effect that the Lien of this Agreement continues to be in
     full force and effect with respect to the Replacement Engine; and

          (iii) the Owner shall deliver to the Indenture Trustee an officer's
     certificate stating that in the opinion of such signer, all conditions
     precedent provided for in this Section 5.01(b) relating to such replacement
     have been complied with.

          Upon satisfaction of all conditions to such substitution, (x) the
Indenture Trustee shall execute and deliver to the Owner such documents and
instruments, prepared at the Owner's expense, as the Owner shall reasonably
request to evidence the release of such replaced Engine from the Lien of this
Agreement, (y) the Indenture Trustee shall assign to the Owner all claims it may
have against any other Person relating to any Event of Loss giving rise to such
substitution and (z) the Owner shall receive all insurance proceeds and proceeds
in respect of any Event of Loss giving rise to such replacement. For all
purposes hereof, each such replacement engine shall, after such conveyance, be
deemed to be subjected to the Lien of this Agreement and shall be deemed an
"Engine."

          (c)   Application of Payments from Governmental Authorities for
                ---------------------------------------------------------
Requisition of Title, etc.  Any payments (other than insurance proceeds the
--------------------------
application of which is provided for in Section 4.03) received at any time by
the Indenture Trustee or by Owner from any governmental authority or other
Person with respect to an Event of Loss, other than a requisition for use by the
United States Government or other government of registry of the Aircraft or any
instrumentality or agency of any thereof not constituting an Event of Loss, will
be applied as follows:

          (i)   if payments are received with respect to the Airframe (or the
     Airframe and any Engine or engines then installed thereon), (A) unless the
     same are replaced pursuant to Section 5.01(a), such payments as shall not
     exceed the amounts payable under Section 5.01(a) hereof required to be paid
     by Owner pursuant to Section 5.01(a), shall be applied in reduction of
     Owner's obligation to pay the amounts payable under

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                                    [Trust Indenture and Mortgage ([_________])]

     Section 5.01(a) hereof, if not already paid by Owner, or, if already paid
     by Owner, shall be applied to reimburse Owner for its payment of such
     amounts, and following the foregoing application, the balance, if any, of
     such payments shall be paid over to, or retained by, Owner; or (B) if such
     property is replaced pursuant to Section 5.01(a), such payments shall be
     paid over to or retained by, Owner; provided, that Owner shall have fully
     performed or, concurrently therewith, will fully perform the terms of the
     last paragraph of Section 5.01(a) with respect to the Event of Loss for
     which such payments are made; and

          (ii)  if such payments are received with respect to an Engine under
     circumstances contemplated by Section 5.01(b) hereof, such payments shall
     be paid over to, or retained by, Owner, provided that either (x) such
     payments are less than the Loss Payee Amount or (y) Owner shall have fully
     performed, or concurrently therewith will perform, the terms of Section
     5.01(b) with respect to the Event of Loss for which such payments are made.

          (d)   Requisition for Use of the Aircraft by the United States
                --------------------------------------------------------
Government or Government of Registry of the Aircraft.  In the event of the
----------------------------------------------------
requisition for use of the Airframe and the Engines or engines installed on the
Airframe by the United States Government or any other government of registry of
the Aircraft or any instrumentality or agency of any thereof, Owner shall
promptly notify the Indenture Trustee of such requisition, and all of Owner's
obligations under this Agreement with respect to the Aircraft shall continue to
the same extent as if such requisition had not occurred. All payments received
by the Indenture Trustee or Owner from such government for the use of such
Airframe and Engines or engines shall be paid over to, or retained by, Owner
(or, if directed by Owner, any Permitted Lessee).

          (e)   Requisition for Use of an Engine by the United States Government
                ----------------------------------------------------------------
or the Government of Registry of the Aircraft.  In the event of the requisition
---------------------------------------------
for use of an Engine by the United States Government or any other government of
registry of the Aircraft or any agency or instrumentality of any thereof (other
than in the circumstances contemplated by subsection (d)), Owner shall replace
(or cause any Permitted Lessee to replace) such Engine hereunder and Indenture
Trustee and Owner (or Permitted Lessee as the case may be) shall comply with the
terms of Section 5.01(b) hereof to the same extent as if an Event of Loss had
occurred with respect to such Engine.  Upon compliance with Section 5.01(b)
hereof, any payments received by Indenture Trustee or Owner from such government
with respect to such requisition shall be paid over to, or retained by Owner.

          (f)   Application of Payments During Existence of Certain Indenture
                -------------------------------------------------------------
Defaults and Events of Default.  Any amount referred to in this Section 5.01
------------------------------
which is payable to or retainable by Owner (or any Permitted Lessee) shall not
be paid to or retained by Owner (or any Permitted Lessee) if at the time of such
payment or retention an Indenture Default of the type described in Section
8.01(a)(i), 8.01(e) or 8.01(f) or any Indenture Event of Default shall have
occurred and be continuing, but shall be held by or paid over to Indenture
Trustee as security for the obligations of Owner (or such Permitted Lessee)
under this Agreement and applied against Owner's obligations hereunder as and
when due.  At such time as there shall not be continuing

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                                    [Trust Indenture and Mortgage ([_________])]

any such Indenture Event of Default, such amount shall be paid to Owner to the
extent not previously applied in accordance with the preceding sentence.

          Section 5.02  Liens.  The Owner will not directly or indirectly
                        -----
create, incur, assume or suffer to exist any Lien on or with respect to the
Airframe on any Engine or any interest therein, except Permitted Liens. The
Owner shall promptly, at its own expense, take such action as may be necessary
to duly discharge (by bonding or otherwise) any Lien other than a Permitted Lien
arising at any time.

                                   ARTICLE 6

          REDEMPTION OF EQUIPMENT NOTES; RELEASE OF SWAP OBLIGATIONS

          Section 6.01  Redemption of Equipment Notes upon Certain Events and
                        -----------------------------------------------------
Release of Swap Obligations.
---------------------------

          (a)  Event of Loss.  If there shall be an Event of Loss to the
               -------------
Aircraft or Airframe and the Aircraft or Airframe is not replaced pursuant to
Section 5.01(a)(ii), then, (i) Owner shall satisfy its obligations under Section
6(e) of the Swap Agreement as incorporated in the Confirmation, and (ii) each
outstanding Equipment Note shall be redeemed in whole at a price (the "6.01(a)
Redemption Price") equal to 100% of the outstanding principal amount of such
Equipment Note, together with accrued and unpaid interest thereon to but
excluding the applicable Redemption Date. No Make-Whole Amount shall be payable
in connection with a redemption under this Section 6.01.

          (b)  Voluntary Redemptions of Equipment Notes.  Each of the Series A-
               ----------------------------------------
1, Series A-2, Series B and Series C-2 Equipment Notes may be redeemed by the
Owner on any date, upon notice as specified in Section 6.02, and in such event,
each outstanding Equipment Note of such Series shall be redeemed in whole at a
price (the "6.01(b) Redemption Price", and together with the 6.01(a) Redemption
Price, the "Redemption Price") equal to 100% of the outstanding principal amount
of such Equipment Note, together with accrued and unpaid interest thereon to but
excluding the applicable Redemption Date plus Make-Whole Amount, if any, payable
with respect thereto, provided, however; that the Equipment Notes of any Series
may not be redeemed unless (1) the Rating Agencies shall have provided Ratings
confirmation for the ratings on the Series A-1, A-2 and B Pass Through
Certificates to the extent not the subject of such redemption, and (2)
immediately prior to the distribution in redemption of such Series of Equipment
Notes all amounts then due and owing, on or prior to such Redemption Date, with
respect to the Swap Obligations shall have been paid.

          (c)  Satisfaction of Swap Obligations.  The interest of the Swap
               --------------------------------
Counterparty in the Indenture Estate is subject to discharge as provided in
Section 6 of the Swap Agreement as incorporated in the Confirmation and such
discharge shall be evidenced by the release specified in Section 2.09.  If the
Swap Obligations relating to the Indenture Estate are to be discharged by
payment pursuant to the Confirmation then, on or before the date such payment is
required

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                                    [Trust Indenture and Mortgage ([_________])]

pursuant to the Confirmation, such amounts shall be paid to the Indenture
Trustee for application as provided Section 3.02(c). Upon full and final payment
of the Swap Obligations, no payment shall be made under this Indenture and the
interest of the Swap Counterparty shall be released as provided in Section 2.09.

          Section 6.02  Notice of Redemption to Noteholders.  Irrevocable notice
                        -----------------------------------
of redemption shall be given by first-class mail, postage prepaid, mailed not
less than 15 nor more than 60 days prior to the Redemption Date, to the Swap
Counterparty and to each Noteholder of Equipment Notes to be redeemed or
purchased, at such Noteholder's address appearing in the Register.

          All notices of redemption shall state:

          (1)  the Redemption Date;

          (2)  the applicable basis for determining the applicable Redemption
     Price;
          (3)  that on the Redemption Date, the applicable Redemption Price will
     become due and payable upon each such Equipment Note, and that interest on
     Equipment Notes shall cease to accrue on and after such Redemption Date;
     and

          (4)  the place or places where such Equipment Notes are to be
     surrendered for payment of the applicable Redemption Price.

Notice of redemption of Equipment Notes to be redeemed shall be given by the
Indenture Trustee.

          Section 6.03  Deposit of Redemption Price.  On or before the
                        ---------------------------
Redemption Date, the Owner shall to the extent an amount equal to the Redemption
Price for the Equipment Notes to be redeemed on the Redemption Date shall not
then be held in the Indenture Estate, deposit or cause to be deposited with the
Indenture Trustee or the Paying Agent by 11:00 a.m., Chicago time, in
immediately available funds the applicable Redemption Price of the Equipment
Notes to be redeemed on the Redemption Date, together with accrued interest
thereon and, in the case of a redemption pursuant to Section 6.01(b), Make-Whole
Amount, if any.

          Section 6.04  Equipment Notes Payable on Redemption Date.  Notice of
                        ------------------------------------------
redemption or purchase having been given as aforesaid, the Equipment Notes
shall, on the applicable Redemption Date, become due and payable at the
Corporate Trust Department of the Indenture Trustee or at any office or agency
maintained for such purposes pursuant to Section 2.03, and from and after such
Redemption Date (unless there shall be a default in the deposit of the
applicable Redemption Price, accrued interest or Make-Whole Amount, if any,
pursuant to Section 6.03) any Equipment Notes then outstanding shall cease to
bear interest or be deemed to be outstanding for any purpose.  Upon surrender of
any such Equipment Note for redemption in accordance with said notice such
Equipment Note shall be paid at the Redemption Price.

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                                    [Trust Indenture and Mortgage ([_________])]

          If any Equipment Note called for redemption shall not be so paid upon
surrender thereof for redemption, the principal amount thereof shall, until
paid, continue to bear interest from the applicable Redemption Date at the
interest rate applicable to such Equipment Note.

                                   ARTICLE 7

                      MATTERS CONCERNING UNCLAIMED MONIES

          Section 7.01  Repayment of Monies for Equipment Note Payments Held by
                        -------------------------------------------------------
the Indenture Trustee.  Any money held by the Indenture Trustee or any Paying
---------------------
Agent in trust for any payment in respect of any Secured Obligation, including
without limitation any money deposited pursuant to Section 6.03 or Article 10
and remaining unclaimed for two years after the due date for such payment,
shall, subject to applicable escheatment laws, be paid to the Owner. The
Noteholders of any outstanding Equipment Notes and/or the Swap Counterparty
shall thereafter, as unsecured general creditors, look only to the Owner for
payment thereof, and all liability of the Indenture Trustee or any such Paying
Agent with respect to such trust money shall thereupon cease; provided that the
                                                              --------
Indenture Trustee or such Paying Agent, before being required to make any such
repayment, may at the expense of the Owner cause to be mailed to each such
Noteholder and the Swap Counterparty notice that such money remains unclaimed
and that, after a date specified therein, which shall not be less than 30 days
from the date of mailing, any unclaimed balance of such money then remaining
will be repaid to the Owner as provided herein.

                                   ARTICLE 8

                             DEFAULTS AND REMEDIES

          Section 8.01  Indenture Events of Default.  The following events shall
                        ---------------------------
constitute "Indenture Events of Default" under this Agreement (whether any such
event shall be voluntary or involuntary or come about or be effected by
operation of law or pursuant to or in compliance with any judgment, decree or
order of any court or any order, rule or regulation of any administrative or
governmental body):

          (a)  Owner shall fail to pay (i) any amount of interest on, Make-Whole
     Amount, if any, or principal of any Equipment Note when due and payable
     (whether upon redemption or purchase, final maturity, acceleration or
     otherwise) and such failure shall continue unremedied for 10 Business Days
     after such amount shall have become due and payable, (ii) any other amount
     payable by Owner hereunder (other than with respect to the Swap
     Obligations) or under the Participation Agreement when due and payable and
     such failure shall continue unremedied for more than 20 Business Days after
     receipt by Owner of written notice from the Indenture Trustee, or (iii) any
     amount payable by Swap Provider under the Confirmation with respect to the
     Swap Obligations when due and

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                                    [Trust Indenture and Mortgage ([_________])]

     payable and such failure shall continue unremedied for 10 Business Days
     after such amount shall have become due and payable; or

          (b)  Owner shall fail to carry and maintain on or with respect to the
     Aircraft (or cause to be carried and maintained) insurance required to be
     maintained in accordance with the provisions of Section 4.03 hereof;
     provided that such lapse or cancellation shall not constitute an Indenture
     Event of Default until the earlier of (i) 30 days after receipt by the
     Indenture Trustee of written notice of such lapse or cancellation or (ii)
     the date that such lapse or cancellation is effective as to the Indenture
     Trustee; or

          (c)  Owner shall have failed to perform or observe (or caused to be
     performed and observed) in any material respect any other covenant or
     agreement to be performed or observed by it under any Operative Document or
     the Confirmation, and such failure shall continue unremedied for a period
     of 60 days after receipt by Owner of written notice thereof from Indenture
     Trustee; provided, however, that if Owner shall have undertaken to cure any
     such failure and, notwithstanding the reasonable diligence of Owner in
     attempting to cure such failure, such failure is not cured within said 60-
     day period there shall exist no Indenture Event of Default under this
     Section 8.01 so long as Owner is proceeding with due diligence to cure such
     failure and such failure is in fact cured within 360 days; or

          (d)  any representation or warranty made by Owner herein or in any
     Operative Document or by the Swap Provider in the Confirmation shall prove
     to have been incorrect in any material respect at the time made and shall
     remain material at the time in question; provided, however, such
     incorrectness shall constitute a default hereunder only if such
     incorrectness shall continue uncured for a period of 60 days after the
     receipt by Owner of a written notice from (x) Indenture Trustee or (y)
     subject to Section 2.6 of the Intercreditor Agreement, holders of 25% in
     outstanding principal amount of Equipment Notes or (z) the Swap
     Counterparty with respect to the Confirmation, in each case advising Owner
     of the existence of such incorrectness; or

          (e)  the commencement of an involuntary case or other proceeding in
     respect of Owner in an involuntary case under the federal bankruptcy laws,
     as now or hereafter constituted, or any other applicable federal or state
     bankruptcy, insolvency or other similar law in the United States or seeking
     the appointment of a receiver, liquidator, assignee, custodian, trustee,
     sequestrator (or similar official) of Owner or for all or substantially all
     of its property, or seeking the winding-up or liquidation of its affairs
     and the continuation of any such case or other proceeding undismissed or
     unstayed for a period of ninety (90) consecutive days or an order for
     relief under Chapter 11 of the Bankruptcy Code with respect to Owner as
     debtor or any other order, judgment or decree shall be entered in any
     proceeding by any court of competent jurisdiction appointing, without the
     consent of Owner, a receiver, trustee or liquidator of Owner, or for all or
     substantially all of its property, or sequestering of all or substantially
     all of the property of Owner and any such order, judgment or decree or
     appointment or sequestration shall be

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                                    [Trust Indenture and Mortgage ([_________])]

     final or shall remain in force undismissed, unstayed or unvacated for a
     period of ninety (90) days after the date of entry thereof; or

          (f)  the commencement by Owner of a voluntary case under the federal
     bankruptcy laws, as now constituted or hereafter amended, or any other
     applicable federal or state bankruptcy, insolvency or other similar law in
     the United States, or the consent by Owner to the appointment of or taking
     possession by a receiver, liquidator, assignee, trustee, custodian,
     sequestrator (or other similar official) of Owner or for all or
     substantially all of its property, or the making by Owner of any assignment
     for the benefit of creditors or Owner shall take any corporate action to
     authorize any of the foregoing.

provided, however, that, notwithstanding anything to the contrary contained in
this Section 8.01, any failure of Owner to perform or observe any covenant,
condition, agreement or any error in a representation or warranty shall not
constitute an Indenture Event of Default if such failure or error is caused
solely by reason of any event that constitutes an Event of Loss so long as Owner
is continuing to comply with all of the terms of Section 5.01 hereof.

          Section 8.02  Acceleration; Rescission and Annulment.  If an Indenture
                        --------------------------------------
Event of Default under Section 8.01(e) or 8.01(f) shall have occurred and is
continuing, then the principal of the all Equipment Notes, together with accrued
but unpaid interest thereon, and all other amounts due thereunder and hereunder
shall immediately become due and payable without presentment, demand, protest or
notice, all of which are hereby waived, and if any other Indenture Event of
Default occurs and is continuing, the Indenture Trustee (i) may (and shall,
subject to Section 2.6 of the Intercreditor Agreement, upon receipt of a written
demand therefor from the holders of 25% in outstanding principal amount of the
Equipment Notes), by notice to the Owner declare the principal of all the
Equipment Notes to be immediately due and payable (ii) may (and shall, subject
to Section 2.6 of the Intercreditor Agreement, upon receipt of a written demand
therefor from the Swap Counterparty), by notice to the Swap Provider declare the
Swap Termination Amounts to be immediately due and payable.  Upon such
declaration (i) in the case of the Equipment Notes, the principal of all
Equipment Notes together with accrued interest thereon from the date in respect
of which interest was last paid hereunder to the date payment of such principal
has been made or duly provided for, without Make-Whole Amount, and, (ii) in the
case of the Confirmation, the Swap Termination Amounts, shall in each case be
immediately due and payable without presentment, demand, protest or other
notice, all of which are hereby waived.  At any time after such declaration and
prior to the sale or disposition of the Indenture Estate, the Indenture Trustee
may (and shall upon receipt of a written demand therefor from the Instructing
Group) by notice to the Owner, rescind either or both of such declarations and
thereby annul its consequences if (i) an amount sufficient to pay all principal
on any Equipment Notes which have become due otherwise than by such declaration
and any interest thereon and interest due or past due, if any, and all sums due
and payable to the Indenture Trustee have been deposited with the Indenture
Trustee, (ii) an amount sufficient to pay all Swap Obligations which have become
due otherwise than by such declaration have been deposited with the Indenture
Trustee, (iii) the rescission would not conflict with any judgment or decree and
(iv) all existing Indenture Defaults and Indenture Events of Default under this
Agreement have been cured or

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                                    [Trust Indenture and Mortgage ([_________])]

waived except nonpayment of principal of, or interest on, the Equipment Notes
that has become due solely because of such acceleration. No such rescission
shall affect any subsequent default or impair any right consequent thereon.

          Section 8.03  Other Remedies Available to Indenture Trustee.  (a)
                        ---------------------------------------------
After an Indenture Event of Default shall have occurred and so long as such
Indenture Event of Default shall be continuing, then and in every such case the
Indenture Trustee, as holder of a security interest in the Aircraft or Engines
may, and when required pursuant to the provisions of Article 9 shall, exercise,
any or all of the rights and powers and pursue any and all of the remedies
accorded to a secured party under applicable law, may recover judgment in its
own name as Indenture Trustee against the Indenture Estate and may take
possession of all or any part of the Indenture Estate and may exclude the Owner
and all Persons claiming under any of them wholly or partly therefrom; provided,
however, that during any period when possession of the Aircraft has been
transferred to and the Aircraft is subject to the Civil Reserve Air Fleet
Program in accordance with the provisions of Section 4.01(b) hereof and in
possession of the United States Government or an agency or instrumentality of
the United States, the Indenture Trustee shall not, on account of any Indenture
Event of Default, be entitled to do any of the following set forth in this
Section 8.03 in such manner as to limit the Owner's control under this Agreement
(or any Permitted Lessee's control under any Permitted Lease) of any Airframe or
any Engines installed thereon, unless at least sixty (60) days' (or such lesser
period as may then be applicable under the Air Mobility Command program of the
United States Government) written notice of default hereunder shall have been
given by the Indenture Trustee by registered or certified mail to the Owner (and
any Permitted Lessee) with a copy addressed to the Contracting Office
Representative for the Air Mobility Command of the United States Air Force under
any contract with the Owner (or any Permitted Lessee) relating to the Aircraft;
provided, further, that the Indenture Trustee shall give the Owner thirty (30)
days' prior written notice of its intention to sell the Aircraft.

          (b)  After an Indenture Event of Default shall have occurred and so
long as such Indenture Event of Default shall be continuing, the Indenture
Trustee may, if at the time such action may be lawful and always subject to
compliance with any mandatory legal requirements, either with or without taking
possession, and either before or after taking possession and without instituting
any legal proceedings whatsoever, and having first given notice of such sale by
registered mail to the Owner, at least 30 days prior to the date of such sale,
and any other notice which may be required by law, sell and dispose of the
Indenture Estate, or any part thereof, or interest therein, at public auction or
private sale, in one lot as an entirety or in separate lots, and either for cash
or on credit and on such terms as the Indenture Trustee may determine, and at
any place (whether or not it be the location of the Indenture Estate or any part
thereof) and time designated in the notice above referred to; provided, however,
                                                              --------  -------
that, notwithstanding any provision herein to the contrary, the Indenture
Trustee may not provide the notice provided for above of its intention to sell
any of the Indenture Estate or exercise remedies against the Indenture Estate
seeking to deprive the Owner of its rights therein unless a declaration of
acceleration has been made pursuant to Section 8.02 or the Equipment Notes have
otherwise theretofore become due and payable through redemption or otherwise.
Any such sale or sales

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may be adjourned from time to time by announcement at the time and place
appointed for such sale or sales, or for any such adjourned sale or sales,
without further notice, and the Indenture Trustee, the Swap Counterparty and the
Noteholder or Noteholders of any Equipment Notes, or any interest therein, may
bid and become the purchaser at any such sale and each Noteholder shall be
entitled at any sale to credit against any purchase price bid at such sale by
such Noteholder all or any part of the unpaid Secured Obligations owing to such
Noteholder or the Swap Counterparty secured by the Lien of this Agreement (in
the case of such Noteholder, only to the extent that such unpaid Secured
Obligation would have been paid to such Noteholder pursuant to Article III
hereof if such purchase price were paid in cash and this sentence, other than
this parenthetical, was not given effect). The Indenture Trustee may exercise
such right without possession or production of the Equipment Notes or proof of
ownership thereof, and as representative of the Noteholders and the Swap
Counterparty may exercise such right without notice to the Noteholders and the
Swap Counterparty or including the Noteholders and the Swap Counterparty as
parties to any suit or proceeding relating to foreclosure of any property in the
Indenture Estate.

          (c)  If an Indenture Event of Default has occurred and is continuing,
the Indenture Trustee shall also be entitled to pursue all or any part of the
Indenture Estate wherever it may be found and may enter any of the premises of
the Owner or any other Person wherever the Indenture Estate may be or be
supposed to be and search for the Indenture Estate and take possession of any
item of the Indenture Estate pursuant to this Section 8.03(c).  The Indenture
Trustee may, from time to time, at the expense of the Indenture Estate, make all
such expenditures for maintenance, insurance, repairs, replacements,
alterations, additions and improvements to and of the Indenture Estate, as it
may deem proper.  In each such case, the Indenture Trustee shall have the right
to maintain, use, insure, operate, store, lease, control or manage the Indenture
Estate, and to carry on business and exercise all rights and powers of the Owner
relating to the Indenture Estate as the Indenture Trustee shall deem
appropriate, including the right to enter into any and all such agreements with
respect to the maintenance, use, insurance, operation, storage, leasing, control
or management of the Indenture Estate or any part thereof.  The Indenture
Trustee shall be entitled to collect and receive directly all tolls, rents,
issues, profits, products, revenues or other income pursuant to this Section
8.03(c).  In accordance with the terms of this Section 8.03(c), such tolls,
rents, issues, profits, products, revenues and other income shall be applied to
pay the expenses of using, operating, storing, leasing, controlling or managing
the Indenture Estate, and of all maintenance, insurance, repairs, replacements,
alterations, additions and improvements, and to make all payments which the
Indenture Trustee may be required or may elect to make, if any, for taxes,
assessments, insurance or other proper charges upon the Indenture Estate or any
part thereof (including the employment of engineers and accountants to examine,
inspect and make reports upon the properties and books and records of the
Owner), and all other payments which the Indenture Trustee may be required or
authorized to make under any provision of this Agreement, including this Section
8.03(c), as well as just and reasonable compensation for the services of the
Indenture Trustee, and of all persons properly engaged and employed by the
Indenture Trustee.

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          If an Indenture Event of Default occurs and is continuing and the
Indenture Trustee shall have obtained possession of or title to the Aircraft,
the Indenture Trustee shall not be obligated to use or operate the Aircraft or
cause the Aircraft to be used or operated directly or indirectly by itself or
through agents or other representatives or to lease, license or otherwise permit
or provide for the use or operation of the Aircraft by any other Person unless
(i) the Indenture Trustee shall have been able to obtain insurance in kinds, at
rates and in amounts satisfactory to it in its discretion to protect the
Indenture Estate and the Indenture Trustee, as trustee and individually, against
any and all liability for loss or damage to the Aircraft and for public
liability and property damage resulting from use or operation of the Aircraft
and (ii) funds are available in the Indenture Estate to pay for all such
insurance or, in lieu of such insurance, the Indenture Trustee is furnished with
indemnification from the Noteholders or any other Person upon terms and in
amounts satisfactory to the Indenture Trustee in its discretion to protect the
Indenture Estate and the Indenture Trustee, as trustee and individually, against
any and all such liabilities.

          (d)  Subject to Sections 8.03(b), the Indenture Trustee may proceed to
protect and enforce this Agreement and the Equipment Notes by suit or suits or
proceedings in equity, at law or in bankruptcy, and whether for the specific
performance of any covenant or agreement herein contained or in execution or aid
of any power herein granted; or for foreclosure hereunder, or for the
appointment of a receiver or receivers for the Indenture Estate or any part
thereof, or for the recovery of judgment for the indebtedness secured by the
Lien created under this Agreement or for the enforcement of any other proper,
legal or equitable remedy available under applicable law.

          (e)  Each and every right, power and remedy herein given to the
Indenture Trustee specifically or otherwise in this Agreement shall be
cumulative and shall be in addition to every other right, power and remedy
herein specifically given or now or hereafter existing at law, in equity or by
statute, and each and every right, power and remedy whether specifically herein
given or otherwise existing may be exercised from time to time and as often in
such order as may be deemed expedient by the Indenture Trustee, and the exercise
or the beginning of the exercise of any power or remedy shall not be construed
to be a waiver of the right to exercise at the same time or thereafter any other
right, power or remedy.  No delay or omission by the Indenture Trustee in the
exercise of any right, remedy or power or in pursuing any remedy shall impair
any such right, power or remedy or be construed to be a waiver of any default on
the part of the Owner or to be an acquiescence therein.

          (f)  Notwithstanding anything contained herein to the contrary, so
long as the Subordination Agent (acting on behalf of the Pass Through Trustees)
or any Pass Through Trustee is a Noteholder, the Indenture Trustee is not
authorized or empowered to acquire title to the Indenture Estate, or to take any
action with respect to any of the Indenture Estate so acquired by it, if such
acquisition or action would cause any Pass Through Trust to fail to qualify as a
"grantor trust" for federal income tax purposes.

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          Section 8.04  Waiver of Existing Defaults.  The Instructing Group by
                        ---------------------------
notice to the Indenture Trustee may waive on behalf of the Noteholders and the
Swap Counterparty an existing Indenture Default or Indenture Event of Default
and its consequences except (i) an Indenture Default or Indenture Event of
Default in the payment of (a) the principal of or interest on any Equipment
Note, or (b) any amount with respect to the Swap Obligations payable by the Swap
Provider under the Confirmation; (ii) in respect of a covenant or provision
hereof which pursuant to Section 11.02 can not be amended or modified without
the consent of each Noteholder affected thereby or (iii) in respect of the
failure by the Swap Provider to fulfill its obligations under Section
6.01(a)(i).

          Section 8.05  Control by Instructing Group.  Except as otherwise
                        ----------------------------
expressly provided herein (but subject always to the provisions of the
Intercreditor Agreement), the Instructing Group may direct the time, method and
place of conducting any proceeding for any remedy available to the Indenture
Trustee or exercising any trust or power conferred on it by this Agreement.
However, the Indenture Trustee may refuse to follow any direction that conflicts
with law or this Agreement that would subject the Indenture Trustee to personal
liability.

          Section 8.07  Rights of Noteholders to Receive Payment.
                        ----------------------------------------
Notwithstanding any other provision of this Agreement (but subject always to the
provisions of the Intercreditor Agreement) the right of any Noteholder to
receive payment of principal of, Make-Whole Amount, if any, and interest on such
Equipment Note on or after the respective due dates expressed in such Equipment
Note, or to bring suit for the enforcement of any such payment on or after such
respective dates, shall not be impaired or affected without the consent of such
Noteholder.

          Section 8.08  Indenture Trustee May File Proofs of Claim.  The
                        ------------------------------------------
Indenture Trustee may file such proofs of claim and other papers or documents as
may be necessary or advisable in order to have the claims of the Indenture
Trustee, the Noteholders and the Swap Counterparty allowed in any judicial
proceedings relating to the Owner, its creditors, or its property.

          Section 8.09  Waiver of Certain Rights by Swap Counterparty and
                        -------------------------------------------------
Noteholders. In the event of an Indenture Default or Indenture Event of Default
------------
described in Section 8.01(e) or (f), the Swap Counterparty and the Noteholders
agree with the Owner and the Swap Provider that, notwithstanding the relief from
the Automatic Stay afforded to swap agreements under Section 362(b)(17) of the
Bankruptcy Code, they will not, nor will they instruct any Person to, exercise
remedies under this Indenture any sooner than such remedies would be permitted
to be exercised by reason of Section 1110 of the Bankruptcy Code.

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                                   [Trust Indenture and Mortgage ([__________])]

                                   ARTICLE 9

                               INDENTURE TRUSTEE

          Section 9.01  Duties of Indenture Trustee.  (a)  The Indenture Trustee
                        ---------------------------
may refuse to perform any duty or exercise any right or power unless it receives
indemnity satisfactory to it against any loss, liability or expense.

          (b)  Subject to the provisions of Sections 2.08 and 9.04, the
Indenture Trustee shall not be liable for interest on any money received except
as otherwise provided in any other Operative Document. Money held in trust by
the Indenture Trustee need not be segregated from other funds except to the
extent required by law.

          Section 9.02  Rights of Indenture Trustee.  (a)  The Indenture Trustee
                        ---------------------------
may rely on any document believed by it to be genuine and to have been signed or
presented by the proper person.  The Indenture Trustee need not investigate any
fact or matter stated in the document.

          (b)  Before the Indenture Trustee acts or refrains from acting, it may
consult with counsel or require an officer's certificate or an opinion of
counsel from the Owner after which it will take such action or refrain from
acting as it deems appropriate.  The Indenture Trustee shall not be liable for
any action it takes or omits to take in good faith and in accordance herewith in
reliance on a resolution of the Board of Directors of the Owner, the written
advice of counsel skilled in the area for which such advice is sought acceptable
to the Owner and the Indenture Trustee, officer's certificate or opinions of
counsel provided by the Owner.

          (c)  The Indenture Trustee may act through agents and shall not be
responsible for the misconduct or negligence of any such agent appointed with
due care; provided that, no such agents shall be appointed by the Indenture
          --------
Trustee without the consent of the Owner, such consent not to be unreasonably
withheld.

          (d)  The Indenture Trustee shall not be liable for any action it takes
or omits to take in good faith which it believes to be authorized or within its
rights or powers.

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

          (f)  The Indenture Trustee, in its individual capacity, shall not be
answerable or accountable under any circumstances, except (i) for its own
willful misconduct or gross negligence (other than for the handling of funds,
for which the standard of accountability shall be willful misconduct or
negligence).

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          (g)  Except in accordance with written instructions furnished in
accordance with the terms of this Agreement, the Indenture Trustee shall have no
duty (i) to see any recording or filing of this Indenture or any other document,
or to see to the maintenance of any such registration, recording or filing, (ii)
to see to the payment or discharge of any lien or encumbrance of any kind
against any part of the Indenture Estate, or (iii) to ascertain or inquire as to
the performance or observance of any of the Owner's covenants in this Agreement.

          (h)  The Indenture Trustee, in its individual or trust capacities,
does not make, nor shall it be deemed to have made, any representation or
warranty as to the validity, legality or enforceability of this Indenture or any
other Operative Documents or as to the correctness of any statement contained in
any thereof, except for the representations and warranties of the Indenture
Trustee, in each case expressly made in this Indenture or in the Operative
Documents.

          Section 9.03  Individual Rights of Indenture Trustee.  The Indenture
                        --------------------------------------
Trustee in its individual or any other capacity may become the owner or pledgee
of Equipment Notes and may otherwise deal with the Owner or an Affiliate of the
Owner or a subsidiary of the Owner with the same rights it would have if it were
not the Indenture Trustee.  Any Agent may do the same with like rights.

          Section 9.04  Funds May Be Held by Indenture Trustee or Paying Agent;
                        -------------------------------------------------------
Investments.  Any monies (including without limitation for purpose of this
-----------
Section 9.04 Permitted Investments constituting the proceeds of the maturity,
sale or other disposition of any Permitted Investment) held by the Indenture
Trustee or the Paying Agent hereunder as part of the Indenture Estate, until
paid out by the Indenture Trustee or the Paying Agent as herein provided, (i)
subject to clause (ii) below, may be carried by the Indenture Trustee or the
Paying Agent on deposit with itself or on deposit to its account with any bank,
trust company or national banking association incorporated or doing business
under the laws of the United States of America or one of the States thereof
having combined capital and surplus and retained earnings of at least
$75,000,000, and neither the Indenture Trustee nor the Paying Agent shall have
any liability for interest upon any such monies except as otherwise agreed in
writing or (ii) at any time and from time to time, at the request of the Owner,
shall be invested and reinvested in Permitted Investments as specified in such
request (if such investments are reasonably available for purchase) and sold, in
any case at such prices, including accrued interest or its equivalent, as are
set forth in such request, and such Permitted Investments shall be held by the
Indenture Trustee in trust as part of the Indenture Estate until so sold;
provided that the Owner shall upon demand pay to the Indenture Trustee the
--------
amount of any loss realized upon maturity, sale or other disposition of any such
Permitted Investment and be entitled to receive from the Indenture Trustee, and
the Indenture Trustee shall promptly pay to the Owner, any profit, income,
interest, dividend or gain realized upon maturity, sale or other disposition of
any Permitted Investment. The Indenture Trustee shall not be responsible for any
losses on any investments or sales of Permitted Investments made pursuant to the
procedure specified in this Section 9.04 other than by reason of its willful
misconduct or gross negligence.  All Permitted Investments held by the Indenture
Trustee or the Paying Agent pursuant to this Section 9.04 shall either be (a)
registered in the name of, payable to the order of, or specially indorsed to,
the Indenture Trustee or the

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Paying Agent, as the case may be, or (b) held in an Eligible Account. For
purposes of this Section 9.04, "Eligible Account" means an account established
by and with an Eligible Institution at the request of the Indenture Trustee or
the Paying Agent, as the case may be, which institution agrees, for all purposes
of the applicable Uniform Commercial Code ("UCC") including Article 8 thereof,
that (a) such account shall be a "securities account" (as defined in Section 8-
501 of the UCC), (b) all property (other than cash) credited to such account
shall be treated as a "financial asset" (as defined in Section 8-102(9) of the
UCC), (c) the Indenture Trustee or the Paying Agent, as the case may be, shall
be the "entitlement holder" (as defined in Section 8-102(7) of the UCC) in
respect of such account, (d) the Eligible Institution will comply with all
entitlement orders issued by the Indenture Trustee or the Paying Agent, as the
case may be, to the exclusion of the Owner, and (e) the "securities intermediary
jurisdiction" (under Section 8-110(e) of the UCC) shall be the State of
Illinois. For purposes of this Section 9.04, "Eligible Institution" means the
corporate trust department of (a) State Street, acting solely in its capacity as
a "securities intermediary" (as defined in Section 8-102(14) of the UCC), or (b)
a depository institution organized under the laws of the United States of
America or any one of the states thereof or the District of Columbia (or any
U.S. branch of a foreign bank), which has a long-term unsecured debt rating from
Moody's and Standard & Poor's of at least A-3 or its equivalent.

          Section 9.05  Notice of Defaults.  If an Indenture Default or
                        ------------------
Indenture Event of Default under this Agreement occurs and is continuing and the
Indenture Trustee has actual knowledge of same, the Indenture Trustee shall (i)
promptly send written notice thereof to the Owner and (ii) within 90 days after
the occurrence of an Indenture Event of Default, mail to each Noteholder and the
Swap Counterparty notice of all uncured Indenture Events of Default under this
Agreement. Except in the case of a default in the payment of the principal of,
Make-Whole Amount, if any, or interest on any Equipment Note, the Indenture
Trustee shall be protected in withholding the notice required under clause (ii)
above if and so long as the executive committee or trust committee of directors
of the Indenture Trustee and/or other responsible officers thereof in good faith
determines that withholding such notice is in the best interests of the
Noteholders.

          Section 9.06  Compensation and Indemnity. The Indenture Trustee shall
                        --------------------------
not be required to take any action or refrain from taking any action under
Section 9.05 (other than the first sentence thereof) or Article 8 hereof unless
the Indenture Trustee shall have been indemnified to its reasonable satisfaction
against any liability, cost or expense (including counsel fees) which may be
incurred in connection therewith pursuant to a written agreement with one or
more Noteholders or the Swap Counterparty.  The Indenture Trustee agrees that it
shall look solely to the Noteholders and the Swap Counterparty for the
satisfaction of any indemnity (except expenses, costs or other amounts specified
under clause "First" of Section 3.03 hereof) owed to it pursuant to this Section
9.06.  The Indenture Trustee shall not be under any obligation to take any
action under this Agreement or any other Operative Document and nothing herein
or therein shall require the Indenture Trustee to expend or risk its own funds
or otherwise incur the risk of any financial ability in the performance of any
of its rights or powers if it shall have reasonable grounds for believing that
repayment of such funds or adequate indemnity against such risk or liability is
not reasonably assured to it.  The Indenture Trustee shall not be required to
take any

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action under Section 9.05 (other than the first sentence thereof) or Article 8
hereof, nor shall any other provision of this Agreement or any other Operative
Document be deemed to impose a duty on the Indenture Trustee to take any action,
if the Indenture Trustee shall have been advised by counsel that such action is
contrary to the terms hereof or is otherwise contrary to law.

          Section 9.07  Replacement of Indenture Trustee.  (a)  The resignation
                        --------------------------------
or removal of the Indenture Trustee and the appointment of a successor Indenture
Trustee shall become effective only upon the successor Indenture Trustee's
acceptance of appointment as provided in this Section.

          (b)  The Indenture Trustee may resign by giving at least 30 days'
prior written notice to the Owner. A Majority in Interest of Noteholders may
remove the Indenture Trustee by giving at least 30 days' prior written notice to
the Indenture Trustee and the Owner and may appoint a successor Indenture
Trustee for such Equipment Notes with the Owner's consent. The Owner may remove
the Indenture Trustee at any time no Indenture Default under Section 8.01(a),
(e) or (f) or any Indenture Event of Default shall have occurred and be
continuing, if the Owner determines in its reasonable business judgment that
such removal would be appropriate or if:

          (1)  the Indenture Trustee fails to comply with Section 9.09;

          (2)  the Indenture Trustee is adjudged a bankrupt or an insolvent;

          (3)  a receiver or public officer takes charge of the Indenture
     Trustee or its property; or

          (4)  the Indenture Trustee becomes incapable of acting.

          (c)  If a vacancy exists in the office of Indenture Trustee for any
reason, the Owner shall promptly appoint a successor Indenture Trustee.

          (d)  If a successor Indenture Trustee does not take office within 30
days after the retiring Indenture Trustee resigns or is removed, the retiring
Indenture Trustee, the Owner or a Majority in Interest of Noteholders may
petition any court of competent jurisdiction for the appointment of a successor
Indenture Trustee.

          (e)  If the Indenture Trustee fails to comply with Section 9.09, any
Noteholder may petition any court of competent jurisdiction for the removal of
such Indenture Trustee and the appointment of a successor Indenture Trustee.

          (f)  A successor Indenture Trustee shall deliver a written acceptance
of its appointment to the retiring Indenture Trustee and to the Owner.
Thereupon, the resignation or removal of the retiring Indenture Trustee shall
become effective, and the successor Indenture Trustee shall have all the rights,
powers and duties of the retiring Indenture Trustee for which the successor
Indenture Trustee is to be acting as Indenture Trustee under this Agreement.
The

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retiring Indenture Trustee shall promptly transfer all property and all books
and records relating to the administration of the Indenture Estate held by it as
Indenture Trustee to the successor Indenture Trustee. The Indenture Trustee
shall give notice of each appointment of a successor Indenture Trustee to the
Noteholders, by mailing written notice of such event by first-class mail to the
Noteholders.

          Section 9.08  Successor Indenture Trustee, Agents by Merger, etc.  If
                        ---------------------------------------------------
the Indenture Trustee or any Agent consolidates with, merges or converts into,
or transfers all or substantially all of its corporate trust business assets to,
another corporation, the successor corporation, without any further act, shall
be the successor Indenture Trustee or Agent, as the case may be.

          Section 9.09  Eligibility; Disqualification.  This Agreement shall at
                        -----------------------------
all times have an Indenture Trustee which (i) shall have a combined capital and
surplus of at least $75,000,000 or (ii) shall have a combined capital and
surplus in excess of $7,500,000 and the obligations of which, whether now in
existence or hereafter incurred, are fully and unconditionally guaranteed by a
corporation organized and doing business under the laws of the United States,
any State or Territory thereof or of the District of Columbia and having a
combined capital and surplus of at least $75,000,000, and which, in any case,
shall be a Citizen of the United States.  If such corporation publishes reports
of conditions at least annually, pursuant to law or to the requirements of
Federal, State, Territorial, or District of Columbia supervising or examining
authority, then for the purposes of this Section 9.09, the combined capital and
surplus of such corporation shall be deemed to be its combined capital and
surplus as set forth in its most recent report of conditions so published.

          In case at any time the Indenture Trustee shall cease to be eligible
in accordance with the provisions of this Section 9.09, the Indenture Trustee
shall resign immediately in the manner and with the effect specified in Section
9.07.

          Section 9.10  Trustee's Liens.  The Indenture Trustee in its
                        ---------------
individual capacity agrees that it will at its own cost and expense promptly
take such action as may be necessary to duly discharge and satisfy in full all
Liens ("Trustee's Liens") on the Indenture Estate which are either (i)
attributable to the Indenture Trustee in its individual capacity and which are
unrelated to the transactions contemplated by the Operative Documents, or (ii)
which are attributable to the Indenture Trustee as trustee hereunder or in its
individual capacity and which arise out of acts or omissions which are not
expressly contemplated by this Agreement.

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                                   [Trust Indenture and Mortgage ([__________])]

                                  ARTICLE 10

                        TERMINATION OF TRUST INDENTURE

          Section 10.01  Termination of Trust Indenture.  Upon (or at any time
                         ------------------------------
after):

          (x)  payment in full of the outstanding principal amount of, Make-
Whole Amount, if any, and interest on and all other amounts due under all
Equipment Notes and provided that all other Secured Obligations due to the
Noteholders, the Swap Counterparty and the other Indenture Indemnitees shall
have been satisfied or paid in full; or

          (y)  the receipt of the confirmation of the Rating Agencies and after
there has been irrevocably deposited (except as provided in Section 10.04) with
the Indenture Trustee as funds in trust, specifically pledged as security for,
and dedicated solely to, the benefit of the Noteholders, (1) money in an amount,
or (2) Permitted Investments which, through the payment of interest and
principal in respect thereof in accordance with their terms, will provide (not
later than one Business Day before the due date of any payment referred to below
in this paragraph) money in an amount, or (3) a combination of money and
Permitted Investments referred to in the foregoing clause (2), sufficient, in
the opinion of a nationally recognized firm of independent certified public
accountants expressed in a written certification thereof delivered to the
Indenture Trustee, to pay in full the outstanding principal amount of, Make-
Whole Amount, if any, and interest on the Equipment Notes on the dates such
amounts are due (including as a result of redemption in respect of which
irrevocable notice has been given to the Indenture Trustee on or prior to the
date of such deposit); provided, however, that
                       --------  -------

          (A)  upon the making of the deposit referred to above in this clause
     (y), the right of the Owner to cause the redemption of Equipment Notes
     (except a redemption in respect of which irrevocable notice has theretofore
     been given) shall terminate;

          (B)  the Owner has delivered to the Indenture Trustee an officer's
     certificate and an opinion of counsel (both counsel and opinion to be
     reasonably acceptable to the Indenture Trustee) to the effect that after
     the Closing Date there has been published by the Internal Revenue Service a
     ruling to the effect that Noteholders will not recognize income, gain or
     loss for Federal income tax purposes as a result of the exercise by the
     Owner of its option under Clause (y) of this Section 10.01 and will be
     subject to Federal income tax on the same amount and in the same manner and
     at the same times, as would have been the case if such option had not been
     exercised;

          (C)  all other amounts then due and payable hereunder have been paid;
     and

          (D)  the Owner has delivered to the Indenture Trustee an officer's
     certificate and an opinion of counsel, each stating that all conditions
     precedent provided for relating

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     to the satisfaction and discharge of this Agreement contemplated by this
     Section 10.01 have been complied with;

the Owner shall direct the Indenture Trustee to execute and deliver to or as
directed in writing by the Owner an appropriate instrument releasing the
Aircraft and the Engines and all other property included in the Indenture Estate
from the Lien of this Agreement and the Indenture Trustee shall execute and
deliver such instrument as aforesaid; provided, however, that in the case of
clause (y) of Section 10.01 the release shall apply only to the Secured
Obligations relating to the Equipment Notes and the Lien of this Agreement and
all other provisions hereof (other than those related to the released Secured
Obligations) shall remain in full force and effect until the Secured Obligations
due with respect to the Confirmation have been paid in full; provided, further,
however, that this Agreement and the trusts created hereby shall earlier
terminate and this Agreement shall be of no further force or effect upon any
sale or other final disposition by the Indenture Trustee of all property
constituting part of the Indenture Estate and the final distribution by the
Indenture Trustee of all monies or other property or proceeds constituting part
of the Indenture Estate in accordance with the terms hereof.  Except as
aforesaid otherwise provided, this Agreement and the trusts created hereby shall
continue in full force and effect in accordance with the terms hereof.

          Section 10.02  Survival of Certain Obligations.  Notwithstanding the
                         -------------------------------
provisions of Section 10.01, the obligations of the Indenture Trustee contained
in Sections 2.01 through 2.12, Section 7.01, Section 9.10, Section 10.03 and
Section 10.04, and the other rights, duties, immunities and privileges hereunder
of the Indenture Trustee shall survive.

          Section 10.03  Monies to Be Held in Trust.  All moneys and Permitted
                         --------------------------
Investments deposited with the Indenture Trustee pursuant to Section 10.01 shall
be held in trust and applied by it, in accordance with the provisions of the
Confirmation, the Equipment Notes and this Agreement, to the payment either
directly or through any Paying Agent, as the Indenture Trustee may determine, to
the Swap Counterparty and the Noteholders, of all sums due and to become due
thereon for the Swap Obligations, principal, Make-Whole Amount, if any, and
interest, as applicable, but such money need not be segregated from other funds
except to the extent required by law.

          Section 10.04  Monies to Be Returned to Owner.  The Indenture Trustee
                         ------------------------------
and any Paying Agent shall promptly pay or return to the Owner upon request of
the Owner any money or Permitted Investments held by them at any time that are
not required for the payment of the amounts described above in Section 10.03 on
the Swap Obligations or Equipment Notes for which money or Permitted Investments
have been deposited pursuant to Section 10.01.

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                                   [Trust Indenture and Mortgage ([__________])]

                                  ARTICLE 11

                            AMENDMENTS AND WAIVERS

          Section 11.01  Amendments to this Agreement Without Consent of the
                         ---------------------------------------------------
Swap Counterparty or Noteholders.  The Owner and the Indenture Trustee may
--------------------------------
enter into one or more agreements supplemental hereto without the consent of any
Noteholder, the Swap Counterparty or any other Person for any of the following
purposes:

          (1)  to correct any mistake or cure any ambiguity, defect or
     inconsistency herein or in the Equipment Notes or to make any change not
     inconsistent with the provisions hereof; provided that such change does not
                                              --------
     adversely affect the interests of the Swap Counterparty or any Noteholder;

          (2)  to evidence the succession of another party as the Owner in
     accordance with the terms of the Participation Agreement or to evidence (in
     accordance with Article 9) the succession of a new trustee hereunder, the
     removal of the trustee hereunder or the appointment of any co-trustee or
     co-trustees or any separate or additional trustee or trustees;

          (3)  to convey, transfer, assign, mortgage or pledge any property to
     or with the Indenture Trustee or to make any other provisions with respect
     to matters or questions arising hereunder so long as such action shall not
     adversely affect the interests of the Swap Counterparty or the Noteholders;

          (4)  to correct or amplify the description of any property at any time
     subject to the Lien of this Agreement or better to assure, convey and
     confirm unto the Indenture Trustee any property subject or required to be
     subject to the Lien of this Agreement or to subject to the Lien of this
     Agreement the Airframe or Engines or airframe or engines substituted for
     the Airframe or Engines in accordance herewith;

          (5)  to add to the covenants of the Owner, for the benefit of the Swap
     Counterparty or the Noteholders, or to surrender any rights or power herein
     conferred upon the Owner;

          (6)  to add to the rights of the Swap Counterparty or the Noteholders;

          (7)  to provide for the issuance of Series D Equipment Notes and Pass
     Through Certificates issued by the Class D Pass Through Trust and to make
     changes relating thereto, provided that the Series D Equipment Notes are
     issued in accordance with the terms hereof and of the Participation
     Agreement;

                                       68
<PAGE>

                                   [Trust Indenture and Mortgage ([__________])]

          (8)  to provide for the re-issuance of any Series of Equipment Notes
     that has previously been prepaid pursuant to Section 6.01(b), provided that
     such Series of Equipment Notes is issued in accordance with the Series
     hereof; and

          (9)  to include on the Equipment Notes any legend as may be required
     by applicable law.

          Section 11.02  Amendments to this Agreement with Consent of
                         --------------------------------------------
Noteholders. (a) With the written consent of the Swap Counterparty and a
-----------
Majority in Interest of Noteholders, the Owner, the Indenture Trustee may enter
into such supplemental agreements to add any provisions to or to change or
eliminate any provisions of this Agreement or of any such supplemental
agreements or to modify the rights of the Swap Counterparty or the Noteholders;
provided, however, that, an amendment under this Section 11.02 may not without
--------  -------
the consent of the Swap Counterparty and each of the Noteholders of the
applicable Series of Equipment Notes and, in the case of the Series A-1, Series
A-2 or Series B Equipment Notes, the applicable Liquidity Provider:

          (1)  reduce the principal amount of, Make-Whole Amount, if any, or any
     installment of interest on, such Series of Equipment Notes; or

          (2)  change the date on which any principal amount of, any
     Amortization Amount payable with respect to, Make-Whole Amount, if any, or
     interest on such Series of Equipment Notes, is due or payable; or

          (3)  with respect to each Series of Equipment Notes, create any Lien
     on the Indenture Estate prior to or pari passu with the Lien thereon under
                                         ---- -----
     this Agreement except such as are permitted by this Agreement, or deprive
     any Noteholder of the benefit of the Lien on the Indenture Estate created
     by this Agreement; or

          (4)  with respect to such Series of Equipment Notes, reduce the
     percentage in principal amount of the outstanding Equipment Notes, the
     consent of whose Noteholders is required for any such supplemental
     agreement, or the consent of whose Noteholders is required for any waiver
     (of compliance with certain provisions of this Agreement or of certain
     defaults hereunder or their consequences) provided for in this Agreement;

          (5)  make any change in Article 3, Article 6, Section 8.01 (except to
     add Indenture Events of Default) or this Section 11.02(a); or

          (6)  make any change in Exhibit G.

          (b)  It is not necessary under this Section 11.02 for the Noteholders
or the Swap Counterparty to consent to the particular form of any proposed
supplemental agreement, but it is sufficient if they consent to the substance
thereof.

                                       69
<PAGE>

                                   [Trust Indenture and Mortgage ([__________])]

          (c)  Promptly after the execution by the Owner and the Indenture
Trustee of any supplemental agreement pursuant to the provisions of this Section
11.02, the Indenture Trustee shall transmit by first-class mail a notice,
setting forth in general terms the substance of such supplemental agreement, to
all Noteholders, as the names and addresses of such Noteholders appear on the
Register and the Swap Counterparty.  Any failure of the Indenture Trustee to
mail such notice, or any defect therein, shall not, however, in any way impair
or affect the validity of any such supplemental agreement.

          Section 11.03  Revocation and Effect of Consents.  Until an amendment
                         ---------------------------------
or waiver becomes effective, a consent to it by a Noteholder is a continuing
consent by the Noteholder and every subsequent Noteholder, even if notation of
the consent is not made on any Equipment Note.  However, any such Noteholder or
subsequent Noteholder may revoke the consent as to his Equipment Note if the
Indenture Trustee receives the notice of revocation before the date the
amendment or waiver becomes effective.  After an amendment or waiver becomes
effective, it shall bind every Noteholder affected by such amendment or waiver.

          Section 11.04  Notation on or Exchange of Equipment Notes.  The
                         ------------------------------------------
Indenture Trustee may place an appropriate notation about an amendment or waiver
on any Equipment Note thereafter executed.  The Indenture Trustee in exchange
for such Equipment Notes may execute new Equipment Notes that reflect the
amendment or waiver.

          Section 11.05  Indenture Trustee Protected. The Indenture Trustee need
                         ---------------------------
not sign any supplemental agreement that adversely affects its rights.

          Section 11.06  Amendments, Waivers, etc. of Other Operative Documents.
                         ------------------------------------------------------
(a) Subject to Section 11.01, without the consent of a Majority in Interest of
Noteholders, the respective parties to the Participation Agreement may not
modify, amend or supplement such agreement, or give any consent, waiver,
authorization or approval thereunder, for the purpose of adding any provisions
to or changing in any manner or eliminating any of the provisions thereof or of
modifying in any manner the rights of the respective parties thereunder;
provided, however, that, without the consent of the Indenture Trustee or any
--------  -------
Noteholder, the Participation Agreement may be modified, amended or supplemented
in order to cure any ambiguity, to correct or supplement any provisions thereof
which may be defective or inconsistent with any other provision thereof or of
any provision of this Agreement, or to make any other provision with respect to
matters or questions arising thereunder or under this Agreement which shall not
be inconsistent with the provisions of this Agreement, provided the making of
any such other provision shall not adversely affect the interests of the
Noteholders.

          Section 11.07  Notices to Liquidity Providers.  Any request made to
                         ------------------------------
the Swap Counterparty or any Noteholder for consent to any amendment or
supplement pursuant to this Article 11 shall be promptly furnished by the
Indenture Trustee or the Swap Counterparty, at its address set forth in the
Confirmation, as the case may be, to each Liquidity Provider at its address set
forth in the Intercreditor Agreement.

                                       70
<PAGE>

                                   [Trust Indenture and Mortgage ([__________])]

                                  ARTICLE 12

                                 MISCELLANEOUS

          Section 12.01  Notices.  (a)  Unless otherwise specifically provided
                         -------
for herein, all notices required under the terms and provisions of this
Agreement shall be in English and in writing, and any such notice may be given
by hand-delivery, overnight courier service, mail, or telecopier (to be
confirmed by hand delivery, overnight courier service or mail) addressed as
indicated below and any such notice shall be effective, in the case of hand-
delivery, when delivered, in the case of overnight courier service, one Business
Day after delivery with charges paid to a courier service with instructions for
overnight delivery, in the case of mail, three Business Days after delivery to
the postal service with certified or registered mail charges paid, and, in the
case of telecopier, upon confirmed transmittal:

          if to the Owner, to:

               United Air Lines, Inc.
               P.O. Box 66100
               Chicago, Illinois 60666
               Attention: Assistant Treasurer
               Telecopier: (847) 700-7117

          or if by overnight courier, to:

               1200 East Algonquin Road
               Elk Grove Township, Illinois 60007
               Attention: Assistant Treasurer
               Telecopier: (847) 700-7117

                                       71
<PAGE>

                                   [Trust Indenture and Mortgage ([__________])]

          if to the Indenture Trustee, to:

               State Street Bank and Trust
               Company of Connecticut, National Association
               225 Asylum Street
               Goodwin Square
               Hartford, Connecticut 06103
               Attention: Corporate Trust Division
               Telecopier: 860-244-1881

          with a copy to:

               State Street Bank and Trust Company
               2 Avenue de LaFayette
               Boston, Massachusetts  02111
               Attention: Corporate Trust Department
               Telecopier: 617-662-1465

          (b)  The Owner or the Indenture Trustee by notice to the others may
designate additional or different addresses for subsequent notices or
communications.

          (c)  Any notice or communication to the Noteholders shall be mailed by
first-class mail to the respective addresses for the Noteholders shown on the
Register kept by the Registrar and to addresses filed with the Indenture Trustee
for other Noteholders.  Failure so to mail a notice or communication or any
defect in such notice or communication shall not affect its sufficiency with
respect to other Noteholders of such Equipment Notes of that or any other Series
entitled to receive notice.

          (d)  If a notice or communication is mailed in the manner provided
above within the time prescribed, it is conclusively presumed to have been duly
given, whether or not the addressee receives it.

          (e)  If the Owner mails a notice or communication to the Noteholders,
it shall mail a copy to the Indenture Trustee and to the Paying Agent at the
same time.

          Section 12.02  Assignment of Confirmation.  The Indenture Trustee
                         --------------------------
hereby accepts and consents to the assignment of all of the Swap Counterparty's
rights, title and interest in and to the Confirmation pursuant to the terms of
the AFE Indenture.

          Section 12.03  GOVERNING LAW.  THIS AGREEMENT AND THE EQUIPMENT NOTES
                         -------------
SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF
ILLINOIS WITHOUT GIVING EFFECT TO THE CONFLICT OF LAWS PROVISIONS OF THE STATE
OF ILLINOIS.

                                       72
<PAGE>

                                   [Trust Indenture and Mortgage ([__________])]

          Section 12.04  Execution in Counterparts.  This Agreement may be
                         -------------------------
executed in any number of counterparts, each of which shall be an original but
such counterparts shall together constitute but one instrument.

                                  *    *   *

                                       73
<PAGE>

                                   [Trust Indenture and Mortgage ([__________])]

          IN WITNESS WHEREOF, the Owner and the Indenture Trustee have caused
this Trust Indenture and Mortgage to be duly executed by their respective
officers thereunto duly authorized.

                              UNITED AIR LINES, INC.

                              By:__________________________________
                                  Name:
                                  Title:

                              STATE STREET BANK AND TRUST COMPANY OF
                              CONNECTICUT, NATIONAL ASSOCIATION
                                  as Indenture Trustee

                              By:__________________________________
                                  Name:
                                  Title:

                                       74
<PAGE>

                                                                     EXHIBIT A-1
                                                          to Trust Indenture and
                                                                        Mortgage

          FORM OF SERIES A-1, SERIES B and SERIES C-2 EQUIPMENT NOTES
          -----------------------------------------------------------

                            UNITED AIR LINES, INC.

        SERIES [______] EQUIPMENT NOTE DUE [_____] ISSUED IN CONNECTION
        WITH THE ________ MODEL ________ AIRCRAFT BEARING UNITED STATES
                          REGISTRATION NUMBER N_____.

No.______                                              Date:  [___________,____]

Original Principal Amount                                     Maturity Date
-------------------------                                     -------------

$____________________                                 __________________________

Debt Rate

_____________

          UNITED AIR LINES, INC., a Delaware corporation ("Owner") for value
received, hereby promises to pay to STATE STREET BANK AND TRUST COMPANY OF
CONNECTICUT, NATIONAL ASSOCIATION, as the Subordination Agent under the
Intercreditor Agreement, or registered assigns, the principal sum of
_____________________________ Dollars ($_____________) in installments, one such
installment to be due and payable on each Payment Date, each such installment to
be in an amount equal to the amount set forth in Schedule 1 hereto, together
with interest on the unpaid principal amount hereof from time to time
outstanding from and including the date hereof until such principal amount is
paid in full. Interest shall accrue at the Debt Rate (calculated on the basis of
a year of 360 days and 12 thirty day months) and shall be payable in arrears on
each Interest Payment Date and on the date this Equipment Note is paid in full.
Notwithstanding the foregoing, the final payment made on this Equipment Note
shall be in an amount sufficient to discharge in full the unpaid principal
amount and all accrued and unpaid interest on, and any other amounts due under,
this Equipment Note.  Notwithstanding anything to the contrary contained herein,
if any date on which a payment under this Equipment Note becomes due and payable
is not a Business Day, then such payment shall not be made on such scheduled
date but shall be made on the next succeeding Business Day and if such payment
is made on such next succeeding Business Day no additional interest shall accrue
on the amount of such payment during such extension.

          For purposes hereof, the term "Indenture" means the Trust Indenture
and Mortgage ([______]) dated as of July ___, 2000 between the Owner and State
Street Bank and Trust Company of Connecticut, National Association (the
"Indenture Trustee"), as the same may
<PAGE>

                                     [Trust Indenture and Mortgage ([________])]

be amended or supplemented from time to time. All other capitalized terms used
in this Equipment Note and not defined herein shall have the respective meanings
assigned in the Indenture.

          This Equipment Note shall bear interest, payable on demand, at the
Past Due Rate (calculated on the basis of a year of 360 days and 12 thirty-day
months) on any overdue principal amount, Make-Whole Amount, if any, and (to the
extent permitted by applicable law) any overdue interest and any other amounts
payable hereunder which are overdue, in each case for the period the same is
overdue.  Amounts shall be overdue if not paid when due (whether at stated
maturity, by acceleration or otherwise).

          This Equipment Note shall not be entitled to any benefit under the
Indenture or be valid or obligatory for any purpose unless this Equipment Note
has been executed on behalf of the Owner by the manual or facsimile signature of
an authorized officer of the Owner, and authenticated by the Indenture Trustee
by the manual signature of an authorized officer or signatory of the Indenture
Trustee, in each case as specified in Section 2.02 of the Indenture.

          This Equipment Note is one of the Equipment Notes referred to in the
Indenture which have been or are to be issued by the Owner pursuant to the terms
of the Indenture. Reference is made to the Indenture and all supplements and
amendments thereto (a copy of which is on file with the Indenture Trustee at its
Corporate Trust Department) for a more complete statement of the terms and
provisions thereof, including a statement of the properties thereby conveyed,
pledged and assigned, the nature and extent of the security, the respective
rights thereunder of the Owner, the Indenture Trustee and the Noteholders of the
Equipment Notes, and the terms upon which the Equipment Notes are, and are to
be, executed and delivered, as well as for a statement of the terms and
conditions of the trust created by the Indenture, to all of which terms and
conditions in the Indenture each Noteholder hereof agrees by its acceptance of
this Equipment Note.

          This Equipment Note is subject to redemption, refinancing, purchase or
prepayment as provided in Article 6 of the Indenture but not otherwise.

          If an Indenture Event of Default shall occur and be continuing, the
principal amount remaining unpaid of the Equipment Notes may be declared due and
payable together with accrued interest thereon in the manner and with the effect
provided in the Indenture.

          As provided in the Indenture, in certain circumstances this Equipment
Note is transferable, and upon surrender of this Equipment Note for registration
of transfer at the principal corporate trust office of the Registrar, or at the
office or agency maintained for such purpose, duly endorsed by, or accompanied
by a written instrument of transfer in form satisfactory to the Registrar duly
executed by, the Noteholder or his attorney duly authorized in writing, one or
more new Equipment Notes of the same maturity and type and of authorized
denominations and for the same aggregate principal amount will be issued to the
designated transferee or transferees.

                                      A-2
<PAGE>

                                     [Trust Indenture and Mortgage ([________])]

          The Equipment Notes are issuable only as registered Equipment Notes.
As provided in the Indenture and subject to certain limitations therein set
forth, Equipment Notes are exchangeable for a like aggregate principal amount of
Equipment Notes of the same series, maturity and type and of authorized
denominations, as requested by the Noteholder surrendering the same, upon
presentation thereof for such purpose at the principal corporate trust office of
the Registrar, or at an office or agency maintained for such purpose.

          No service charge shall be made for any such registration of transfer
or exchange, but the Registrar may require payment of a sum sufficient to cover
any tax or other governmental charge payable in connection therewith.  Prior to
due presentment for registration of transfer or exchange of this Equipment Note,
the Owner, the Indenture Trustee, the Paying Agent and the Registrar may deem
and treat the person in whose name this Equipment Note is registered as the
absolute owner hereof for the purpose of receiving payment of the principal of
and interest on this Equipment Note and for all other purposes whatsoever
whether or not this Equipment Note be overdue, and neither the Owner, the
Indenture Trustee, the Paying Agent nor the Registrar shall be affected by
notice to the contrary.

          [The indebtedness evidenced by this Equipment Note is, to the extent
and in the manner provided in the Indenture, subordinate and subject in right of
payment to the prior payment in full of the Secured Obligations (as defined in
the Indenture) in respect of the Swap Obligations and this Equipment Note is
issued subject to such provisions.]/1/ [The indebtedness evidenced by this
Equipment Note is, to the extent and in the manner provided in the Indenture,
subordinate and subject in right of payment to the prior payment in full of the
Secured Obligations (as defined in the Indenture) in respect of the Swap
Obligations, the Series A-1 Equipment Notes and the Series A-2 Equipment Notes
and this Equipment Note is issued subject to such provisions.]/2/ [The
indebtedness evidenced by this Equipment Note is, to the extent and in the
manner provided in the Indenture, subordinate and subject in right of payment to
the prior payment in full of the Secured Obligations (as defined in the
Indenture) in respect of the Swap Obligations, the Series A-1 Equipment Notes,
the Series A-2 Equipment Notes and the Series B Equipment Notes and this
Equipment Note is issued subject to such provisions.]/3/ The Noteholder of this
Equipment Note, by accepting the same, (a) agrees to and shall be bound by such
provisions and each other provision applicable to it in the Indenture, the Note
Purchase Agreement, the Participation Agreement and each other Operative
Document, (b) authorizes and directs the Indenture Trustee on his behalf to take
such action as may be necessary or appropriate to effectuate the subordination
as provided in the Indenture and (c) appoints the Indenture Trustee his
attorney-in-fact for such purpose.

__________________________

     /1/  To be inserted in the case of a Series A-1 Equipment Note.

     /2/  To be inserted in the case of a Series B Equipment Note.

     /3/  To be inserted in the case of a Series C-2 Equipment Note.

                                      A-3
<PAGE>

                                     [Trust Indenture and Mortgage ([________])]

          AS PROVIDED IN THE INDENTURE, THE INDENTURE AND THIS EQUIPMENT NOTE
SHALL BE CONSTRUED IN ACCORDANCE WITH AND GOVERNED BY THE LAWS OF THE STATE OF
ILLINOIS WITHOUT GIVING EFFECT TO THE CONFLICT OF LAWS PROVISIONS OF THE STATE
OF ILLINOIS.
                                *      *      *

                                      A-4
<PAGE>

                                     [Trust Indenture and Mortgage ([________])]

     IN WITNESS WHEREOF, the Owner has caused this Equipment Note to be duly
executed.

                              UNITED AIR LINES, INC.

                              By:_____________________________________
                                  Title:

                                      A-5
<PAGE>

                                     [Trust Indenture and Mortgage ([________])]

               INDENTURE TRUSTEE'S CERTIFICATE OF AUTHENTICATION

          This is one of the Equipment Notes referred to in the within-mentioned
Indenture.

                                  STATE STREET BANK AND TRUST
                                  COMPANY OF CONNECTICUT,
                                  NATIONAL ASSOCIATION
                                   as Indenture trustee

                                  By:_________________________________________
                                      Authorized officer and signatory

                                      A-6
<PAGE>

                                     [Trust Indenture and Mortgage ([________])]

                                  SCHEDULE I

                             AMORTIZATION SCHEDULE

          Payment Date        Principal Amount (Expressed as a
          ------------        Percentage of Original Principal Amount)
                              ---------------------------------------

               [SEE EXHIBIT [B-1] [B-2] [B-3] [B-4] TO INDENTURE
                       WHICH IS INSERTED UPON ISSUANCE]

                                      A-7
<PAGE>

                                     [Trust Indenture and Mortgage ([________])]

                                                                     EXHIBIT A-2
                                                          to Trust Indenture and
                                                                        Mortgage

                      FORM OF SERIES A-2 EQUIPMENT NOTES
                      ----------------------------------

                            UNITED AIR LINES, INC.

        SERIES [______] EQUIPMENT NOTE DUE [_____] ISSUED IN CONNECTION
        WITH THE ________ MODEL ________ AIRCRAFT BEARING UNITED STATES
                          REGISTRATION NUMBER N_____.

No.______                                              Date:  [___________,____]

Original Principal Amount                                   Maturity Date
-------------------------                                   -------------

$ ____________________                                      _________________

Debt Rate
---------

____________

          UNITED AIR LINES, INC., a Delaware corporation ("Owner") for value
received, hereby promises to pay to STATE STREET BANK AND TRUST COMPANY OF
CONNECTICUT, NATIONAL ASSOCIATION, as the Subordination Agent under the
Intercreditor Agreement, or registered assigns, the principal sum of
_____________________________ Dollars ($_____________) in one installment on
___________, ____ , together with interest on the unpaid principal amount hereof
from time to time outstanding from and including the date hereof until such
principal amount is paid in full. Interest shall accrue at the Debt Rate
(calculated on the basis of a year of 360 days and 12 thirty day months) payable
in arrears on each Interest Payment Date and on the date this Equipment Note is
paid in full.  Notwithstanding the foregoing, the final payment made on this
Equipment Note shall be in an amount sufficient to discharge in full the unpaid
principal amount and all accrued and unpaid interest on, and any other amounts
due under, this Equipment Note. Notwithstanding anything to the contrary
contained herein, if any date on which a payment under this Equipment Note
becomes due and payable is not a Business Day, then such payment shall not be
made on such scheduled date but shall be made on the next succeeding Business
Day and if such payment is made on such next succeeding Business Day no
additional interest shall accrue on the amount of such payment during such
extension.

                                      A-8
<PAGE>

                                     [Trust Indenture and Mortgage ([________])]

          For purposes hereof, the term "Indenture" means the Trust Indenture
and Mortgage ([______]) dated as of July __, 2000, between the Owner and State
Street Bank and Trust Company of Connecticut, National Association (the
"Indenture Trustee"), as the same may be amended or supplemented from time to
time.  All other capitalized terms used in this Equipment Note and not defined
herein shall have the respective meanings assigned in the Indenture.

          This Equipment Note shall bear interest, payable on demand, at the
Past Due Rate (calculated on the basis of a year of 360 days and 12 thirty day
months) on any overdue principal amount, Make-Whole Amount, if any, and (to the
extent permitted by applicable law) any overdue interest and any other amounts
payable hereunder which are overdue, in each case for the period the same is
overdue.  Amounts shall be overdue if not paid when due (whether at stated
maturity, by acceleration or otherwise).

          This Equipment Note shall not be entitled to any benefit under the
Indenture or be valid or obligatory for any purpose unless this Equipment Note
has been executed on behalf of the Owner by the manual or facsimile signature of
an authorized officer of the Owner, and authenticated by the Indenture Trustee
by the manual signature of an authorized officer or signatory of the Indenture
Trustee, in each case as specified in Section 2.02 of the Indenture.

          This Equipment Note is one of the Equipment Notes referred to in the
Indenture which have been or are to be issued by the Owner pursuant to the terms
of the Indenture. Reference is made to the Indenture and all supplements and
amendments thereto (a copy of which is on file with the Indenture Trustee at its
Corporate Trust Department) for a more complete statement of the terms and
provisions thereof, including a statement of the properties thereby conveyed,
pledged and assigned, the nature and extent of the security, the respective
rights thereunder of the Owner, the Indenture Trustee and the Noteholders of the
Equipment Notes, and the terms upon which the Equipment Notes are, and are to
be, executed and delivered, as well as for a statement of the terms and
conditions of the trust created by the Indenture, to all of which terms and
conditions in the Indenture each Noteholder hereof agrees by its acceptance of
this Equipment Note.

          This Equipment Note is subject to redemption, refinancing, purchase or
prepayment as provided in Article 6 of the Indenture but not otherwise.

          If an Indenture Event of Default shall occur and be continuing, the
principal amount remaining unpaid of the Equipment Notes may be declared due and
payable together with accrued interest thereon in the manner and with the effect
provided in the Indenture.

          As provided in the Indenture, in certain circumstances this Equipment
Note is transferable, and upon surrender of this Equipment Note for registration
of transfer at the principal corporate trust office of the Registrar, or at the
office or agency maintained for such purpose, duly endorsed by, or accompanied
by a written instrument of transfer in form satisfactory to the Registrar duly
executed by, the Noteholder or his attorney duly authorized in

                                      A-9
<PAGE>

                                     [Trust Indenture and Mortgage ([________])]

writing, one or more new Equipment Notes of the same maturity and type and of
authorized denominations and for the same aggregate principal amount will be
issued to the designated transferee or transferees.

          The Equipment Notes are issuable only as registered Equipment Notes.
As provided in the Indenture and subject to certain limitations therein set
forth, Equipment Notes are exchangeable for a like aggregate principal amount of
Equipment Notes of the same series, maturity and type and of authorized
denominations, as requested by the Noteholder surrendering the same, upon
presentation thereof for such purpose at the principal corporate trust office of
the Registrar, or at an office or agency maintained for such purpose.

          No service charge shall be made for any such registration of transfer
or exchange, but the Registrar may require payment of a sum sufficient to cover
any tax or other governmental charge payable in connection therewith.  Prior to
due presentment for registration of transfer or exchange of this Equipment Note,
the Owner, the Indenture Trustee, the Paying Agent and the Registrar may deem
and treat the person in whose name this Equipment Note is registered as the
absolute owner hereof for the purpose of receiving payment of the principal of
and interest on this Equipment Note and for all other purposes whatsoever
whether or not this Equipment Note be overdue, and neither the Owner, the
Indenture Trustee, the Paying Agent nor the Registrar shall be affected by
notice to the contrary.

          The indebtedness evidenced by this Equipment Note is, to the extent
and in the manner provided in the Indenture, subordinate and subject in right of
payment to the prior payment in full of the Secured Obligations (as defined in
the Indenture) in respect of the Swap Obligations and this Equipment Note is
issued subject to such provisions.  The Noteholder of this Equipment Note, by
accepting the same, (a) agrees to and shall be bound by such provisions and each
other provision applicable to it in the Indenture, the Note Purchase Agreement,
the Participation Agreement and each other Operative Document, (b) authorizes
and directs the Indenture Trustee on his behalf to take such action as may be
necessary or appropriate to effectuate the subordination as provided in the
Indenture and (c) appoints the Indenture Trustee his attorney-in-fact for such
purpose.

          AS PROVIDED IN THE INDENTURE, THE INDENTURE AND THIS EQUIPMENT NOTE
SHALL BE CONSTRUED IN ACCORDANCE WITH AND GOVERNED BY THE LAWS OF THE STATE OF
ILLINOIS WITHOUT GIVING EFFECT TO THE CONFLICT OF LAWS PROVISIONS OF THE STATE
OF ILLINOIS.

                                *      *      *

                                     A-10
<PAGE>

                                     [Trust Indenture and Mortgage ([________])]

     IN WITNESS WHEREOF, the Owner has caused this Equipment Note to be duly
executed.

                              UNITED AIR LINES, INC.

                              By:__________________________________________
                                  Title:

                                     A-11
<PAGE>

                                     [Trust Indenture and Mortgage ([________])]

               INDENTURE TRUSTEE'S CERTIFICATE OF AUTHENTICATION

     This is one of the Equipment Notes referred to in the within-mentioned
Indenture.

                                STATE STREET BANK AND TRUST
                                COMPANY OF CONNECTICUT,
                                NATIONAL ASSOCIATION,
                                as Indenture Trustee

                                By:_____________________________________
                                   Authorized officer and signatory

                                     A-12
<PAGE>

                                     [Trust Indenture and Mortgage ([________])]

                                  SCHEDULE I

                             AMORTIZATION SCHEDULE

          Payment Date        Principal Amount (Expressed as a
          ------------        Percentage of Original Principal Amount
                              ---------------------------------------

               [SEE EXHIBIT [B-1] [B-2] [B-3] [B-4] TO INDENTURE
                       WHICH IS INSERTED UPON ISSUANCE]

                                     * * *

                                     A-13
<PAGE>

                                     [Trust Indenture and Mortgage ([________])]

                                                                     EXHIBIT A-3
                                                          to Trust Indenture and
                                                                        Mortgage

                       FORM OF SERIES D EQUIPMENT NOTES
                       --------------------------------

                          [TO BE INSERTED IF ISSUED]

                                     A-14
<PAGE>

                                     [Trust Indenture and Mortgage ([________])]

                                                                     EXHIBIT B-1
                                                          to Trust Indenture and
                                                                        Mortgage

                   DESCRIPTION OF SERIES A-1 EQUIPMENT NOTES
                   -----------------------------------------

 Original Principal Amount              Maturity Date            Interest Rate
---------------------------            ---------------          ---------------

             $                         January 1, 2010                _____

                       SERIES A-1 AMORTIZATION SCHEDULE
                       --------------------------------

                                              Principal Amount
                                        (expressed as a percentage of
           Payment Date                  original Principal Amount)
          --------------                -----------------------------

           Jan. 1, 2001
           Jul. 1, 2001
           Jan. 1, 2002
           Jul. 1, 2002
           Jan. 1, 2003
           Jul. 1, 2003
           Jan. 1, 2004
           Jul. 1, 2004
           Jan. 1, 2005
           Jul. 1, 2005
           Jan. 1, 2006
           Jul. 1, 2006
           Jan. 1, 2007
           Jul. 1, 2007
           Jan. 1, 2008
           Jul. 1, 2008
           Jan. 1, 2009
           Jul. 1, 2009
           Jan. 1, 2010
<PAGE>

                                     [Trust Indenture and Mortgage ([________])]

                                                        EXHIBIT B-2
                                                        to Trust Indenture and
                                                        Mortgage

                   DESCRIPTION OF SERIES A-2 EQUIPMENT NOTES
                   -----------------------------------------

 Original Principal Amount         Maturity Date            Interest Rate
---------------------------        -------------            -------------

             $                     July 1, 2010                 _____

                       SERIES A-2 AMORTIZATION SCHEDULE
                       --------------------------------

                Payment Date                         Principal Amount
               --------------                        ----------------

                July 1, 2010                                $
<PAGE>

                                     [Trust Indenture and Mortgage ([________])]

                                                        EXHIBIT B-3
                                                        to Trust Indenture and
                                                        Mortgage

                    DESCRIPTION OF SERIES B EQUIPMENT NOTES
                    ---------------------------------------

 Original Principal Amount               Maturity Date           Interest Rate
---------------------------              -------------           -------------

             $                            July 1, 2011               ______

                        SERIES B AMORTIZATION SCHEDULE
                        ------------------------------

                                         Principal Amount
                                   (expressed as a percentage of
           Payment Date             original Principal Amount)
          --------------           -----------------------------
           Jan. 1, 2001
           Jul. 1, 2001
           Jan. 1, 2002
           Jul. 1, 2002
           Jan. 1, 2003
           Jul. 1, 2003
           Jan. 1, 2004
           Jul. 1, 2004
           Jan. 1, 2005
           Jul. 1, 2005
           Jan. 1, 2006
           Jul. 1, 2006
           Jan. 1, 2007
           Jul. 1, 2007
           Jan. 1, 2008
           Jul. 1, 2008
           Jan. 1, 2009
           Jul. 1, 2009
           Jan. 1, 2010
           Jul. 1, 2010
           Jan. 1, 2011
           Jul. 1, 2011

<PAGE>

                                        [Trust Indenture and Mortgage ([_____])]

                                                          EXHIBIT B-4
                                                          to Trust Indenture and
                                                          Mortgage

                   DESCRIPTION OF SERIES C-2 EQUIPMENT NOTES
                   -----------------------------------------

 Original Principal Amount         Maturity Date         Interest Rate
 -------------------------         -------------         -------------
             $                      July 1, 2010             ______

                        SERIES C-2 AMORTIZATION SCHEDULE
                        --------------------------------

                                              Principal Amount
                                        (expressed as a percentage of
           Payment Date                  original Principal Amount)
          --------------                -----------------------------
           Jan. 1, 2001
           Jul. 1, 2001
           Jan. 1, 2002
           Jul. 1, 2002
           Jan. 1, 2003
           Jul. 1, 2003
           Jan. 1, 2004
           Jul. 1, 2004
           Jan  1, 2005
           Jul. 1, 2005
           Jan. 1, 2006
           Jul. 1, 2006
           Jan. 1, 2007
           Jul. 1, 2007
           Jan. 1, 2008
           Jul. 1, 2008
           Jan. 1, 2009
           Jul. 1, 2009
           Jan. 1, 2010
           Jul. 1, 2010

                                      B-2
<PAGE>

                                       [Trust Indenture and Mortgage ([_____])]

                                                          EXHIBIT B-5
                                                          to Trust Indenture and
                                                          Mortgage

                    DESCRIPTION OF SERIES D EQUIPMENT NOTES
                    ---------------------------------------

 Original Principal Amount          Maturity Date       Interest Rate
 -------------------------          -------------       -------------

                         SERIES D AMORTIZATION SCHEDULE
                         ------------------------------

                                               Principal Amount
                                         (Expressed as a percentage of
           Payment Date                   Original Principal Amount)
           ------------                   -------------------------

                    [TO BE COMPLETED UPON ISSUANCE, IF ANY]
<PAGE>

                                       [Trust Indenture and Mortgage ([_____])]

                                                                     EXHIBIT B-1
                                                          to Trust Indenture and
                                                                        Mortgage

                   DESCRIPTION OF SERIES A-1 EQUIPMENT NOTES
                   -----------------------------------------

           EXHIBIT B-1 TO THE TRUST INDENTURE AND MORTGAGE ([______])
            HAS BEEN INTENTIONALLY OMITTED FROM THE TRUST INDENTURE
                  AND MORTGAGE ([______]) ON FILE WITH THE FAA
<PAGE>

                                       [Trust Indenture and Mortgage ([_____])]

                                                                     EXHIBIT B-2
                                                          to Trust Indenture and
                                                                        Mortgage

                   DESCRIPTION OF SERIES A-2 EQUIPMENT NOTES
                   -----------------------------------------

           EXHIBIT B-2 TO THE TRUST INDENTURE AND MORTGAGE ([______])
            HAS BEEN INTENTIONALLY OMITTED FROM THE TRUST INDENTURE
                  AND MORTGAGE ([______]) ON FILE WITH THE FAA
<PAGE>

                                       [Trust Indenture and Mortgage ([_____])]

                                                                     EXHIBIT B-3
                                                          to Trust Indenture and
                                                                        Mortgage

                    DESCRIPTION OF SERIES B EQUIPMENT NOTES
                    ---------------------------------------

           EXHIBIT B-3 TO THE TRUST INDENTURE AND MORTGAGE ([______])
            HAS BEEN INTENTIONALLY OMITTED FROM THE TRUST INDENTURE
                  AND MORTGAGE ([______]) ON FILE WITH THE FAA
<PAGE>

                                       [Trust Indenture and Mortgage ([_____])]

                                                                     EXHIBIT B-4
                                                          to Trust Indenture and
                                                                        Mortgage

                   DESCRIPTION OF SERIES C-2 EQUIPMENT NOTES
                   -----------------------------------------

           EXHIBIT B-4 TO THE TRUST INDENTURE AND MORTGAGE ([______])
            HAS BEEN INTENTIONALLY OMITTED FROM THE TRUST INDENTURE
                  AND MORTGAGE ([______]) ON FILE WITH THE FAA
<PAGE>

                                       [Trust Indenture and Mortgage ([_____])]

                                                                     EXHIBIT B-5
                                                          to Trust Indenture and
                                                                        Mortgage

                    DESCRIPTION OF SERIES D EQUIPMENT NOTES
                    ---------------------------------------

           EXHIBIT B-5 TO THE TRUST INDENTURE AND MORTGAGE ([______])
            HAS BEEN INTENTIONALLY OMITTED FROM THE TRUST INDENTURE
                  AND MORTGAGE ([______]) ON FILE WITH THE FAA

                                      B-3
<PAGE>

                                       [Trust Indenture and Mortgage ([_____])]

                                                                       EXHIBIT C
                                                              to Trust Indenture
                                                                    and Mortgage

                             CERTAIN ECONOMIC TERMS
                             ----------------------

Insured Amount:                 as of any date, an amount equal to 100% of the
                                aggregate principal amount of the then
                                outstanding Series of Equipment Notes

Obsolete Parts Cap:             [$__________]

Minimum Liability
 Insurance Amount:              [$__________] per occurrence

Loss Payee Amount               [$__________]

Maximum Amount                  [$__________]
 Securing Confirmation
<PAGE>

                                    [Trust Indenture and Mortgage (1997 A320-1)]

                                                                       EXHIBIT D
                                                              to Trust Indenture
                                                                    and Mortgage

               TRUST INDENTURE AND MORTGAGE SUPPLEMENT ([______])
               --------------------------------------------------

          This TRUST INDENTURE AND MORTGAGE SUPPLEMENT ([______]) dated
____________, 2000 (herein called the "Indenture Supplement") between UNITED AIR
LINES, INC., a Delaware corporation (herein called the "Owner") and STATE STREET
BANK AND TRUST COMPANY OF CONNECTICUT, NATIONAL ASSOCIATION, a national banking
association as Indenture Trustee (the "Indenture Trustee").

                                  WITNESSETH:

          WHEREAS, the Trust Indenture and Mortgage ([______]), dated as of July
31, 2000 (herein called the "Indenture"), between the Owner and Indenture
Trustee, provides for the execution and delivery of a supplement thereto
substantially in the form hereof, which shall particularly describe the
Aircraft, and shall specifically mortgage such Aircraft to the Indenture
Trustee; and

          WHEREAS, the Indenture relates to the Airframe and Engines described
below, and a counterpart of the Indenture is attached hereto and made a part
hereof and this Indenture Supplement, together with such counterpart of the
Indenture, is being filed for recordation on the date hereof with the Federal
Aviation Administration as one document;

          NOW, THEREFORE, this Indenture Supplement Witnesseth, that to secure
(a) the prompt payment of the principal of, Make-Whole Amount, if any, and
interest on, and all other amounts due with respect to, all Equipment Notes from
time to time outstanding under the Indenture and the performance and observance
by the Owner of all the agreements, covenants and provisions contained in the
Indenture and in the other Operative Documents to which it is a party, for the
benefit of the Noteholders and each of the Indenture Indemnitees and the prompt
payment of any and all amounts from time to time owing hereunder and under the
Participation Agreement by the Owner to the Noteholders and the Indenture
Indemnitees and (b) the prompt payment and performance by Owner of all of its
obligations under the Confirmation (the obligations specified in (a) and (b)
above being collectively referred to herein as the "Secured Obligations") and
for the uses and purposes and subject to the terms and provisions of the
Indenture, and in consideration of the premises and of the covenants contained
in the Indenture, and of the acceptance of the Equipment Notes by the
Noteholders, and of other good and valuable consideration the receipt and
adequacy whereof are hereby acknowledged, the Owner has granted, bargained,
sold, assigned, transferred, conveyed, mortgaged, pledged and confirmed, and
does hereby grant, bargain, sell, assign, transfer, convey, mortgage, pledge and
confirm, unto the Indenture Trustee, its successors and assigns, for the
security and benefit of the Noteholders, the Swap Counterparty and each of the
other Indenture Indemnitees from time to time, a first priority security
interest in and first priority mortgage lien on all estate, right, title and
interest of the Owner in the following described property:
<PAGE>

                                      [Trust Indenture and Mortgage ([_____])]

                                    AIRFRAME

                      One Airframe Identified as follows:

                                         FAA
                                     Registration      Manufacturer's
       Manufacturer       Model         Number         Serial Number
       ------------       -----         ------         -------------

together with all Parts which are from time to time incorporated or installed in
or attached thereto or which have been removed therefrom, unless the Lien of the
Indenture shall not be applicable to such Part pursuant to the provisions of the
Indenture.

                                AIRCRAFT ENGINES

Two aircraft engines, each such engine having 750 or more rated take-off
horsepower or the equivalent thereof, whether or not such engines shall be
installed in or attached to the Airframe or any other airframe, identified as
follows:

                                                  Manufacturer's
               Manufacturer       Model           Serial Number
               ------------       -----           -------------

in each case, together with all Parts which are from time to time incorporated
or installed in or attached thereto or which have been removed therefrom, unless
the Lien of the Indenture shall not be applicable to such Part pursuant to the
provisions of the Indenture.

          TO HAVE AND TO HOLD all and singular the aforesaid property unto the
Indenture Trustee, its successors and assigns, in trust for the benefit and
security of the Indenture Trustee, the Noteholders and the Swap Counterparty
from time to time, except as provided in Section 2.11 and Article 3 of the
Indenture, without, in the case of the Noteholders, any preference, distinction
or priority of any one Equipment Note over any other by reason of series,
priority of time of issue, sale, negotiation, date of maturity thereof or
otherwise for any reason whatsoever, and for the uses and purposes and subject
to the terms and provisions set forth in the Indenture.

          This Indenture Supplement shall be construed as a supplemental
Indenture and shall form a part thereof, and the Indenture is hereby
incorporated by reference herein and is hereby ratified, approved and confirmed.

                                 *     *     *

                                      D-2
<PAGE>

                                      [Trust Indenture and Mortgage ([_____])]

    IN WITNESS WHEREOF, each of the parties hereto have caused this Indenture
    Supplement to be duly executed by one of its officers, thereunto duly
    authorized, on the day and year first above written.

                                    UNITED AIR LINES, INC.

                                    By:___________________________
                                    Title:

                                    STATE STREET BANK AND TRUST
                                    COMPANY OF CONNECTICUT,
                                    NATIONAL ASSOCIATION
                                       as Indenture Trustee

                                   By:____________________________
                                      Title:

                                      D-3
<PAGE>

                                      [Trust Indenture and Mortgage ([_____])]

                                   EXHIBIT E

                        SCHEDULE OF COUNTRIES AUTHORIZED
                       FOR DOMICILE OF PERMITTED LESSEES
                       ---------------------------------

     Australia                     Malaysia
     Austria                       Mexico
     Bahamas                       Netherlands
     Belgium                       New Zealand
     Brazil                        Norway
     Canada                        Portugal
     Denmark                       Republic of China (Taiwan)
     Finland                       Singapore
     France                        South Korea
     Germany                       Spain
     Greece                        Sweden
     Grenada                       Switzerland
     Iceland                       Thailand
     India                         Trinidad
     Indonesia                     Tobago
     Ireland                       Turkey
     Italy                         United Kingdom
     Jamaica                       Venezuela
     Japan
     Luxembourg

<PAGE>

                                      [Trust Indenture and Mortgage ([_____])]

                                   EXHIBIT F

                        SCHEDULE OF COUNTRIES AUTHORIZED
                           FOR AIRCRAFT REGISTRATION
                           -------------------------

     Australia                Malaysia
     Austria                  Netherlands
     Bahamas                  New Zealand
     Belgium                  Norway
     Brazil                   Portugal
     Canada                   Republic of China (Taiwan)
     Denmark                  Singapore
     Finland                  South Korea
     France                   Spain
     Germany                  Sweden
     Greece                   Switzerland
     Grenada                  Thailand
     Iceland                  Trinidad
     India                    Tobago
     Indonesia                Turkey
     Ireland                  United Kingdom
     Italy                    Venezuela
     Jamaica
     Japan
     Luxembourg
<PAGE>

                                      [Trust Indenture and Mortgage ([_____])]

                                   EXHIBIT G

                      SCHEDULE OF SWAP TERMINATION AMOUNTS
                      ------------------------------------

                    Senior Swap          Junior Swap             Swap
 Payment Date    Termination Amount   Termination Amount   Termination Amount
 ------------    ------------------   ------------------   ------------------

<PAGE>

                                        [Trust Indenture and Mortgage ([_____])]

                                   EXHIBIT H

                                  CONFIRMATION
                                  ------------<PAGE>

                                                                    Exhibit 4.25

                                 July 31, 2000

AFE Trust
c/o Wilmington Trust Company
Rodney Square North
1100 North Market Street
Wilmington, Delaware  19890

Ladies and Gentlemen:

     The purpose of this letter agreement (this "Confirmation") is to confirm
                                                 ------------
the terms and conditions of the Transaction entered into between us on the trade
date specified below (the "Transaction").  This Confirmation constitutes a
                           -----------
separate and independent "Confirmation" as referred to in the Master Agreement
specified below, secured by the Owned Aircraft identified below.  The 1992 ISDA
Master Agreement (the "Master Agreement") between United Air Lines, Inc.
                       ----------------
("United") and AFE Trust ("AFE"), together with the Schedule and appendices
  ------                   ---
thereto, all as annexed to this Confirmation, supplements, forms a part of and
is incorporated by reference into this Confirmation.

     1.   Definitions.  The definitions and provisions contained in the 1991
          ------------
ISDA Definitions and the 1998 Supplement thereto as published by the
International Swaps and Derivatives Association, Inc. (the "Definitions") are
                                                            -----------
incorporated into this Confirmation.  In the event of any inconsistency between
the Definitions and this Confirmation, this Confirmation will govern.
References herein to a "Transaction" shall be deemed to refer to a "Swap
Transaction" for purposes of the Definitions.

          This Confirmation will be governed by and construed in accordance with
the laws of the State of New York without reference to choice of law principles.

          The parties expressly acknowledge that, in reliance on the other
party's entering into the Transaction evidenced by this Confirmation, each party
has made (or refrained from making) substantial financial commitments and has
taken (or refrained from taking) other material actions.

     2.   Summary of Transaction Terms:  The terms of the particular Transaction
          ----------------------------
to which this Confirmation relates are as follows:

Owned Aircraft:             N_____

Owned Aircraft Indenture:   Trust Indenture and Mortgage ([_________]) dated as
                            of July 31, 2000 between United Air Lines, Inc. as
                            Owner and State Street Bank and Trust Company of
                            Connecticut, National Association, as Indenture
                            Trustee

Principal Notional Amount:  See Appendix I to the Schedule to the Master
                            Agreement.

Trade Date:                 July 31, 2000

Effective Date:             July 31, 2000

Termination Date:           July 1, 2011, subject to adjustment in accordance
                            with the Modified Following Business Day Convention
                            (or, if later, the date the Principal Notional
                            Amount of each instrument listed in Appendix 1 to
                            the Schedule to the Master Agreement is reduced to
                            zero in accordance with the terms thereof).

Calculation Agent:          As set forth in the Schedule to the Master
                            Agreement.

Fixed Rate Payer:           United
<PAGE>

Fixed Rate
Payer Payment Dates:        The Periodic Swap Payment Dates as defined in Part
                            4, clause (a)(viii), of the Schedule to the Master
                            Agreement on which the Periodic Payment Amount is a
                            negative number

Fixed Rate:                 The Applicable Fixed Rate as defined the definition
                            of "Periodic Swap Payment Formula" in Part 4, clause
                            (a)(ix), of the Schedule to the Master Agreement

Fixed Rate Day Count
Fraction:                   Number of days in a 360-day year of twelve 30-day
                            months

Floating Rate Payer:        AFE

Floating Rate Payer
Payment Dates:              The Periodic Swap Payment Dates as defined in Part
                            4, clause (a)(viii), of the Schedule to the Master
                            Agreement on which the Periodic Payment Amount is a
                            positive number

Floating Rate for initial
Calculation Period:         7.9625% (including the Spread)

Floating Rate Option:       The Eurodollar Rate as defined in the final
                            paragraph of Part 4, clause (a), of the Schedule to
                            the Master Agreement

Designated Maturity:        6 month

Spread:                     Plus 0.90%

Floating Rate
Day Count
Fraction:                   Actual/360

Reset Dates:                The first day of each Calculation Period subsequent
                            to the Effective Date

Business Days:              New York

Business Day Convention:    Modified Following Business Day

3.   Account Details.
     ----------------

<TABLE>
     <S>                               <C>          <C>
     Payments to Party A
     Account for payments in USD:      Bank:        State Street Bank and Trust Company, as AFE Indenture
                                                    Trustee
                                                              Boston, Massachusetts
                                              ABA #:          011-000-028
                                              Attention:      Corporate Trust Department/John Correia
                                              Account #:      9903-9901
                                              Reference:      UNITED 2000-1 EETC

     Payments to Party B:
     Account for payments in USD:      Bank:        Banc One
                                                            One Banc One Plaza
                                                            Chicago, IL 60670
</TABLE>
<PAGE>

<TABLE>
                                              <S>             <C>
                                              ABA #:          071-000-013
                                              Attention:      United Airlines Special Account
                                              Account #:      51-67795
                                              Reference:      UNITED 2000-1 EETC
</TABLE>

(4)  Payment Obligation.  If on any Periodic Swap Payment Date, the Periodic
     ------------------
     Payment Amount for such date is a positive amount, the Floating Rate Payer
     shall pay the amount thereof to the Fixed Rate Payer, and if on any such
     date, the Periodic Payment Amount is a negative amount, the Fixed Rate
     Payer shall pay the absolute amount thereof to the Floating Rate Payer,
     except, as set forth in paragraph 5 below, the obligation of the Floating
     Rate Payer to make any such payment is limited to monies available to the
     Floating Rate Payer for distribution to the Fixed Rate Payer under Article
     3 of the AFE Indenture (as defined in the final paragraph of Part 4, clause
     (a), of the Schedule to the Master Agreement).

(5)  Limitation of Liability.  The obligations of Party A under this
     -----------------------
     Confirmation, and in respect of the Transaction evidenced hereby,
     including, without limitation, its obligation to make any Periodic Swap
     Payment or Final Periodic Payment, are expressly limited to the extent of
     the funds, if any, made available for such payment to Party A under, and in
     accordance with, the priorities of payments set forth in Article 3 of the
     AFE Indenture, and any difference between the amount of any Party A payment
     calculated in accordance with this Confirmation and any such amount
     available on the date for payment shall not constitute a claim against, or
     obligation of, Party A.  Party B acknowledges that no claim shall arise
     against Party A for any such difference. No recourse under any obligation,
     covenant or agreement of Party A contained in this Confirmation shall be
     had against any incorporator, stockholder, agent, affiliate, officer,
     employee or trustee of Party A, as such, by the enforcement of any
     assessment or by any legal or equitable proceeding, by virtue of any
     statute or otherwise; it being expressly agreed and understood that the
     agreements of Party A contained in this Confirmation are solely trust
     obligations of Party A and that no personal liability whatsoever shall
     attach to or be incurred by the incorporators, stockholders, agents,
     affiliates, officers, employees or trustees of Party A, as such, or any of
     them, under or by reason of any of the obligations, covenants or agreements
     of Party A contained in this Confirmation and that any and all personal
     liability of every such incorporator, stockholder, agent, affiliate,
     officer, employee or trustee of Party A for breaches by Party A of any such
     obligation, covenant or agreement, which liability may arise either at
     common law or at equity, by statute or constitution, or otherwise, is
     hereby expressly waived as a condition of and in consideration for the
     execution of this Confirmation; provided, however, that nothing in this
                                     --------  -------
     paragraph (5) shall relieve any of the foregoing persons from any liability
     which any such person may otherwise have for his/her or its gross
     negligence or willful misconduct.
<PAGE>

     Please confirm that the foregoing correctly sets forth the terms of our
agreement by executing the copy of this Confirmation enclosed for that purpose
and returning it to us.

                              Very truly yours,

                              United Air Lines, Inc.

                              By:  __________________________
                              Name:
                              Title:

Accepted and Agreed as of the date first written above:

AFE Trust

By: Wilmington Trust Company, not in its individual capacity, but solely in its
capacity as trustee under the Trust Agreement, dated as of June 9, 2000, between
United Air Lines, Inc.  and Wilmington Trust Company.

By:
Name:
Title:
<PAGE>

(Local Currency--Single Jurisdiction)

                                    ISDA(R)
                 International Swap Dealers Association, Inc.

                               MASTER AGREEMENT

United Air Lines, Inc.      and AFE Trust
----------------------------    --------------------------

have entered and/or anticipate entering into one or more transactions (each a
"Transaction") that are or will be governed by this Master Agreement, which
includes the schedule (the "Schedule"), and the documents and other confirming
evidence (each a "Confirmation") exchanged between the parties confirming those
Transactions.

Accordingly, the parties agree as follows:--

1.    Interpretation

(a)  Definitions. The terms defined in Section 12 and in the Schedule will have
the meanings therein specified for the purpose of this Master Agreement.

(b)  Inconsistency. In the event of any inconsistency between the provisions of
the Schedule and the other provisions of this Master Agreement, the Schedule
will prevail. In the event of any inconsistency between the provisions of any
Confirmation and this Master Agreement (including the Schedule), such
Confirmation will prevail for the purpose of the relevant Transaction.

(c)  Single Agreement.  All Transactions are entered into in reliance on the
fact that this Master Agreement and all Confirmations form a single agreement
between the parties (collectively referred to as this "Agreement"), and the
parties would not otherwise enter into any Transactions.

2.    Obligations

(a)   General Conditions.

      (i)    Each party will make each payment or delivery specified in each
      Confirmation to be made by it, subject to the other provisions of this
      Agreement.

      (ii)   Payments under this Agreement will be made on the due date for
      value on that date in the place of the account specified in the relevant
      Confirmation or otherwise pursuant to this Agreement, in freely
      transferable funds and in the manner customary for payments in the
      required currency. Where settlement is by delivery (that is, other than by
      payment), such delivery will be made for receipt on the due date in the
      manner customary for the relevant obligation unless otherwise specified in
      the relevant Confirmation or elsewhere in this Agreement.

      (iii)  Each obligation of each party under Section 2(a)(i) is subject to
      (1) the condition precedent that no Event of Default or Potential Event of
      Default with respect to the other party has occurred and is continuing,
      (2) the condition precedent that no Early Termination Date in respect of
      the relevant Transaction has occurred or been effectively designated and
      (3) each other applicable condition precedent specified in this Agreement.

(b)   Change of Account.  Either party may change its account for receiving a
payment or delivery by giving notice to the other party at least five Local
Business Days prior to the scheduled date for the payment or delivery to which
such change applies unless such other party gives timely notice of a reasonable
objection to such change.
<PAGE>

(c)   Netting.  If on any date amounts would otherwise be payable:--

      (i)        in the same currency; and

      (ii)       in respect of the same Transaction,

by each party to the other, then, on such date, each party's obligation to make
payment of any such amount will be automatically satisfied and discharged and,
if the aggregate amount that would otherwise have been payable by one party
exceeds the aggregate amount that would otherwise have been payable by the other
party, replaced by an obligation upon the party by whom the larger aggregate
amount would have been payable to pay to the other party the excess of the
larger aggregate amount over the smaller aggregate amount.

The parties may elect in respect of two or more Transactions that a net amount
will be determined in respect of all amounts payable on the same date in the
same currency in respect of such Transactions, regardless of whether such
amounts are payable in respect of the same Transaction.  The election may be
made in the Schedule or a Confirmation by specifying that subparagraph (ii)
above will not apply to the Transactions identified as being subject to the
election, together with the starting date (in which case subparagraph (ii) above
will not, or will cease to, apply to such Transactions from such date).  This
election may be made separately for different groups of Transactions and will
apply separately to each pairing of branches or offices through which the
parties make and receive payments or deliveries.

(d)       Default Interest; Other Amounts. Prior to the occurrence or effective
designation of an Early Termination Date in respect of the relevant Transaction,
a party that defaults in the performance of any payment obligation will, to the
extent permitted by law and subject to Section 6(c), be required to pay interest
(before as well as after judgment) on the overdue amount to the other party on
demand in the same currency as such overdue amount, for the period from (and
including) the original due date for payment to (but excluding) the date of
actual payment, at the Default Rate. Such interest will be calculated on the
basis of daily compounding and the actual number of days elapsed. If, prior to
the occurrence or effective designation of an Early Termination Date in respect
of the relevant Transaction, a party defaults in the performance of any
obligation required to be settled by delivery, it will compensate the other
party on demand if and to the extent provided for in the relevant Confirmation
or elsewhere in this Agreement.

3.   Representations

Each party represents to the other party (which representations will be deemed
to be repeated by each party on each date on which a Transaction is entered
into) that:--

(a)  Basic Representations.

     (i)    Status.  It is duly organised and validly existing under the laws of
     the jurisdiction of its organization or incorporation and, if relevant
     under such laws, in good standing;

     (ii)  Powers.  It has the power to execute this Agreement and any other
     documentation relating to this Agreement to which it is a party, to deliver
     this Agreement and any other documentation relating to this Agreement that
     it is required by this Agreement to deliver and to perform its obligations
     under this Agreement and any obligations it has under any Credit Support
     Document to which it is a party and has taken all necessary action to
     authorise such execution, delivery and performance;

     (iii) No Violation or Conflict.  Such execution, delivery and performance
     do not violate or conflict with any law applicable to it, any provision of
     its constitutional documents, any order or judgment of any court or other
     agency of government applicable to it or any of its assets or any
     contractual restriction binding on or affecting it or any of its assets;

     (iv)  Consents.  All governmental and other consents that are required to
     have been obtained by it with respect to this Agreement or any Credit
     Support Document to which it is a party have been obtained and are in full
     force and effect and all conditions of any such consents have been complied
     with; and
<PAGE>

     (v)  Obligations Binding.  Its obligations under this Agreement and any
     Credit Support Document to which it is a party constitute its legal, valid
     and binding obligations, enforceable in accordance with their respective
     terms (subject to applicable bankruptcy, reorganisation, insolvency,
     moratorium or similar laws affecting creditors' rights generally and
     subject, as to enforceability, to equitable principles of general
     application (regardless of whether enforcement is sought in a proceeding in
     equity or at law)).

(b)  Absence of Certain Events.  No Event of Default or Potential Event of
Default or, to its knowledge, Termination Event with respect to it has occurred
and is continuing and no such event or circumstance would occur as a result of
its entering into or performing its obligations under this Agreement or any
Credit Support Document to which it is a party.

(c)  Absence of Litigation.  There is not pending or, to its knowledge,
threatened against it or any of its Affiliates any action, suit or proceeding at
law or in equity or before any court, tribunal, governmental body, agency or
official or any arbitrator that is likely to affect the legality, validity or
enforceability against it of this Agreement or any Credit Support Document to
which it is a party or its ability to perform its obligations under this
Agreement or such Credit Support Document.

(d)  Accuracy of Specified Information.  All applicable information that is
furnished in writing by or on behalf of it to the other party and is identified
for the purpose of this Section 3(d) in the Schedule is, as of the date of the
information, true, accurate and complete in every material respect.

4.   Agreements

Each party agrees with the other that, so long as either party has or may have
any obligation under this Agreement or under any Credit Support Document to
which it is a party:--

(a)  Furnish Specified Information.  It will deliver to the other party any
forms, documents or certificates specified in the Schedule or any Confirmation
by the date specified in the Schedule or such Confirmation or, if none is
specified, as soon as reasonably practicable.

(b)  Maintain Authorisations.  It will use all reasonable efforts to maintain in
full force and effect all consents of any governmental or other authority that
are required to be obtained by it with respect to this Agreement or any Credit
Support Document to which it is a party and will use all reasonable efforts to
obtain any that may become necessary in the future.

(c)  Comply with Laws.  It will comply in all material respects with all
applicable laws and orders to which it may be subject if failure so to comply
would materially impair its ability to perform its obligations under this
Agreement or any Credit Support Document to which it is a party.

5.   Events of Default and Termination Events

(a)  Events of Default.  The occurrence at any time with respect to a party or,
if applicable, any Credit Support Provider of such party or any Specified Entity
of such party of any of the following events constitutes an event of default (an
"Event of Default") with respect to such party:--

     (i)    Failure to Pay or Deliver.  Failure by the party to make, when due,
     any payment under this Agreement or delivery under Section 2(a)(i) or 2(d)
     required to be made by it if such failure is not remedied on or before the
     third Local Business Day after notice of such failure is given to the
     party;

     (ii)  Breach of Agreement.  Failure by the party to comply with or perform
     any agreement or obligation (other than an obligation to make any payment
     under this Agreement or delivery under Section 2(a)(i) or 2(d) or to give
     notice of a Termination Event) to be complied with or performed by the
     party in accordance with this

                                       3
<PAGE>

     Agreement if such failure is not remedied on or before the thirtieth day
     after notice of such failure is given to the party;

     (iii)  Credit Support Default.

               (1)  Failure by the party or any Credit Support Provider of such
               party to comply with or perform any agreement or obligation to be
               complied with or performed by it in accordance with any Credit
               Support Document if such failure is continuing after any
               applicable grace period has elapsed;

               (2)  the expiration or termination of such Credit Support
               Document or the failing or ceasing of such Credit Support
               Document to be in full force and effect for the purpose of this
               Agreement (in either case other than in accordance with its
               terms) prior to the satisfaction of all obligations of such party
               under each Transaction to which such Credit Support Document
               relates without the written consent of the other party; or

               (3)  the party or such Credit Support Provider disaffirms,
               disclaims, repudiates or rejects, in whole or in part, or
               challenges the validity of, such Credit Support Document;

      (iv)  Misrepresentation.  A representation made or repeated or deemed to
      have been made or repeated by the party or any Credit Support Provider of
      such party in this Agreement or any Credit Support Document proves to have
      been incorrect or misleading in any material respect when made or repeated
      or deemed to have been made or repeated;

     (v)    Default under Specified Transaction.  The party, any Credit Support
     Provider of such party or any applicable Specified Entity of such party (1)
     defaults under a Specified Transaction and, after giving effect to any
     applicable notice requirement or grace period, there occurs a liquidation
     of, an acceleration of obligations under, or an early termination of, that
     Specified Transaction, (2) defaults, after giving effect to any applicable
     notice requirement or grace period, in making any payment or delivery due
     on the last payment, delivery or exchange date of, or any payment on early
     termination of, a Specified Transaction (or such default continues for at
     least three Local Business Days if there is no applicable notice
     requirement or grace period) or (3) disaffirms, disclaims, repudiates or
     rejects, in whole or in part, a Specified Transaction (or such action is
     taken by any person or entity appointed or empowered to operate it or act
     on its behalf);

     (vi)   Cross Default.  If "Cross Default" is specified in the Schedule as
     applying to the party, the occurrence or existence of (1) a default, event
     of default or other similar condition or event (however described) in
     respect of such party, any Credit Support Provider of such party or any
     applicable Specified Entity of such party under one or more agreements or
     instruments relating to Specified Indebtedness of any of them (individually
     or collectively) in an aggregate amount of not less than the applicable
     Threshold Amount (as specified in the Schedule) which has resulted in such
     Specified Indebtedness becoming, or becoming capable at such time of being
     declared, due and payable under such agreements or instruments, before it
     would otherwise have been due and payable or (2) a default by such party,
     such Credit Support Provider or such Specified Entity (individually or
     collectively) in making one or more payments on the due date thereof in an
     aggregate amount of not less than the applicable Threshold Amount under
     such agreements or instruments (after giving effect to any applicable
     notice requirement or grace period);

     (vii)  Bankruptcy.  The party, any Credit Support Provider of such party or
     any applicable Specified Entity of such party:--

               (1)  is dissolved (other than pursuant to a consolidation,
               amalgamation or merger); (2) becomes insolvent or is unable to
               pay its debts or fails or admits in writing its inability
               generally to pay its debts as they become due; (3) makes a
               general assignment, arrangement or composition with or for the
               benefit of its creditors; (4) institutes or has instituted
               against it a proceeding seeking a

                                       4
<PAGE>

               judgment of insolvency or bankruptcy or any other relief under
               any bankruptcy or insolvency law or other similar law affecting
               creditors' rights, or a petition is presented for its winding-up
               or liquidation, and, in the case of any such proceeding or
               petition instituted or presented against it, such proceeding or
               petition (A) results in a judgment of insolvency or bankruptcy or
               the entry of an order for relief or the making of an order for
               its winding-up or liquidation or (B) is not dismissed,
               discharged, stayed or restrained in each case within 30 days of
               the institution or presentation thereof; (5) has a resolution
               passed for its winding-up, official management or liquidation
               (other than pursuant to a consolidation, amalgamation or merger);
               (6) seeks or becomes subject to the appointment of an
               administrator, provisional liquidator, conservator, receiver,
               trustee, custodian or other similar official for it or for all or
               substantially all its assets; (7) has a secured party take
               possession of all or substantially all its assets or has a
               distress, execution, attachment, sequestration or other legal
               process levied, enforced or sued on or against all or
               substantially all its assets and such secured party maintains
               possession, or any such process is not dismissed, discharged,
               stayed or restrained, in each case within 30 days thereafter; (8)
               causes or is subject to any event with respect to it which, under
               the applicable laws of any jurisdiction, has an analogous effect
               to any of the events specified in clauses (1) to (7) (inclusive);
               or (9) takes any action in furtherance of, or indicating its
               consent to, approval of, or acquiescence in, any of the foregoing
               acts; or

     (viii)  Merger Without Assumption.  The party or any Credit Support
     Provider of such party consolidates or amalgamates with, or merges with or
     into, or transfers all or substantially all its assets to, another entity
     and, at the time of such consolidation, amalgamation, merger or transfer:--

               (1)  the resulting, surviving or transferee entity fails to
               assume all the obligations of such party or such Credit Support
               Provider under this Agreement or any Credit Support Document to
               which it or its predecessor was a party by operation of law or
               pursuant to an agreement reasonably satisfactory to the other
               party to this Agreement; or

               (2)  the benefits of any Credit Support Document fail to extend
               (without the consent of the other party) to the performance by
               such resulting, surviving or transferee entity of its obligations
               under this Agreement.

(b)  Termination Events.  The occurrence at any time with respect to a party or,
if applicable, any Credit Support Provider of such party or any Specified Entity
of such party of any event specified below constitutes an Illegality if the
event is specified in (i) below, and, if specified to be applicable, a Credit
Event Upon Merger if the event is specified pursuant to (ii) below or an
Additional Termination Event if the event is specified pursuant to (iii)
below:--

     (i)  Illegality.  Due to the adoption of, or any change in, any applicable
     law after the date on which a Transaction is entered into, or due to the
     promulgation of, or any change in, the interpretation by any court,
     tribunal or regulatory authority with competent jurisdiction of any
     applicable law after such date, it becomes unlawful (other than as a result
     of a breach by the party of Section 4(b)) for such party (which will be the
     Affected Party):--

               (1)  to perform any absolute or contingent obligation to make a
               payment or delivery or to receive a payment or delivery in
               respect of such Transaction or to comply with any other material
               provision of this Agreement relating to such Transaction; or

               (2)  to perform, or for any Credit Support Provider of such party
               to perform, any contingent or other obligation which the party
               (or such Credit Support Provider) has under any Credit Support
               Document relating to such Transaction;

                                       5
<PAGE>

     (ii)  Credit Event Upon Merger.  If "Credit Event Upon Merger" is specified
     in the Schedule as applying to the party, such party ("X"), any Credit
     Support Provider of X or any applicable Specified Entity of X consolidates
     or amalgamates with, or merges with or into, or transfers all or
     substantially all its assets to, another entity and such action does not
     constitute an event described in Section 5(a)(viii) but the
     creditworthiness of the resulting, surviving or transferee entity is
     materially weaker than that of X, such Credit Support Provider or such
     Specified Entity, as the case may be, immediately prior to such action
     (and, in such event, X or its successor or transferee, as appropriate, will
     be the Affected Party); or

     (iii)  Additional Termination Event.  If any "Additional Termination Event"
     is specified in the Schedule or any Confirmation as applying, the
     occurrence of such event (and, in such event, the Affected Party or
     Affected Parties shall be as specified for such Additional Termination
     Event in the Schedule or such Confirmation).

(c)  Event of Default and Illegality.  If an event or circumstance which would
otherwise constitute or give rise to an Event of Default also constitutes an
Illegality, it will be treated as an Illegality and will not constitute an Event
of Default.

6.   Early Termination

(a)  Right to Terminate Following Event of Default.  If at any time an Event of
Default with respect to a party (the "Defaulting Party") has occurred and is
then continuing, the other party (the "Non-defaulting Party") may, by not more
than 20 days notice to the Defaulting Party specifying the relevant Event of
Default, designate a day not earlier than the day such notice is effective as an
Early Termination Date in respect of all outstanding Transactions. If, however,
"Automatic Early Termination" is specified in the Schedule as applying to a
party, then an Early Termination Date in respect of all outstanding Transactions
will occur immediately upon the occurrence with respect to such party of an
Event of Default specified in Section 5(a)(vii)(1), (3), (5), (6) or, to the
extent analogous thereto, (8), and as of the time immediately preceding the
institution of the relevant proceeding or the presentation of the relevant
petition upon the occurrence with respect to such party of an Event of Default
specified in Section 5(a)(vii)(4) or, to the extent analogous thereto, (8).

(b)  Right to Terminate Following Termination Event.

     (i)    Notice.  If a Termination Event occurs, an Affected Party will,
     promptly upon becoming aware of it, notify the other party, specifying the
     nature of that Termination Event and each Affected Transaction and will
     also give such other information about that Termination Event as the other
     party may reasonably require.

     (ii)   Two Affected Parties.  If an Illegality under Section 5(b)(i)(1)
     occurs and there are two Affected Parties, each party will use all
     reasonable efforts to reach agreement within 30 days after notice thereof
     is given under Section 6(b)(i) on action to avoid that Termination Event.

     (iii)  Right to Terminate.  If:--

               (1)  an agreement under Section 6(b)(ii) has not been effected
               with respect to all Affected Transactions within 30 days after an
               Affected Party gives notice under Section 6(b)(i); or

               (2)  an Illegality other than that referred to in Section
               6(b)(ii), a Credit Event Upon Merger or an Additional Termination
               Event occurs,

     either party in the case of an Illegality, any Affected Party in the case
     of an Additional Termination Event if there is more than one Affected
     Party, or the party which is not the Affected Party in the case of a Credit
     Event Upon Merger or an Additional Termination Event if there is only one
     Affected Party may, by not more than 20 days notice to the other party and
     provided that the relevant Termination Event is then continuing,

                                       6
<PAGE>

     designate a day not earlier than the day such notice is effective as an
     Early Termination Date in respect of all Affected Transactions.

(c)  Effect of Designation.

     (i)  If notice designating an Early Termination Date is given under Section
     6(a) or (b), the Early Termination Date will occur on the date so
     designated, whether or not the relevant Event of Default or Termination
     Event is then continuing.

     (ii) Upon the occurrence or effective designation of an Early Termination
     Date, no further payments or deliveries under Section 2(a)(i) or 2(d) in
     respect of the Terminated Transactions will be required to be made, but
     without prejudice to the other provisions of this Agreement. The amount, if
     any, payable in respect of an Early Termination Date shall be determined
     pursuant to Section 6(e).

(d)  Calculations.

     (i)   Statement.  On or as soon as reasonably practicable following the
     occurrence of an Early Termination Date, each party will make the
     calculations on its part, if any, contemplated by Section 6(e) and will
     provide to the other party a statement (1) showing, in reasonable detail,
     such calculations (including all relevant quotations and specifying any
     amount payable under Section 6(e)) and (2) giving details of the relevant
     account to which any amount payable to it is to be paid. In the absence of
     written confirmation from the source of a quotation obtained in determining
     a Market Quotation, the records of the party obtaining such quotation will
     be conclusive evidence of the existence and accuracy of such quotation.

     (ii)  Payment Date.  An amount calculated as being due in respect of any
     Early Termination Date under Section 6(e) will be payable on the day that
     notice of the amount payable is effective (in the case of an Early
     Termination Date which is designated or occurs as a result of an Event of
     Default) and on the day which is two Local Business Days after the day on
     which notice of the amount payable is effective (in the case of an Early
     Termination Date which is designated as a result of a Termination Event).
     Such amount will be paid together with (to the extent permitted under
     applicable law) interest thereon (before as well as after judgment), from
     (and including) the relevant Early Termination Date to (but excluding) the
     date such amount is paid, at the Applicable Rate. Such interest will be
     calculated on the basis of daily compounding and the actual number of days
     elapsed.

(e)  Payments on Early Termination.  If an Early Termination Date occurs, the
following provisions shall apply based on the parties' election in the Schedule
of a payment measure, either "Market Quotation" or "Loss", and a payment method,
either the "First Method" or the "Second Method". If the parties fail to
designate a payment measure or payment method in the Schedule, it will be deemed
that "Market Quotation" or the "Second Method", as the case may be, shall apply.
The amount, if any, payable in respect of an Early Termination Date and
determined pursuant to this Section will be subject to any Set-off.

     (i)  Events of Default.  If the Early Termination Date results from an
     Event of Default:--

               (1)  First Method and Market Quotation. If the First Method and
               Market Quotation apply, the Defaulting Party will pay to the Non-
               defaulting Party the excess, if a positive number, of (A) the sum
               of the Settlement Amount (determined by the Non-defaulting Party)
               in respect of the Terminated Transactions and the Unpaid Amounts
               owing to the Non-defaulting Party over (B) the Unpaid Amounts
               owing to the Defaulting Party.

               (2)  First Method and Loss.  If the First Method and Loss apply,
               the Defaulting Party will pay to the Non-defaulting Party, if a
               positive number, the Non-defaulting Party's Loss in respect of
               this Agreement.

                                       7
<PAGE>

               (3)  Second Method and Market Quotation.  If the Second Method
               and Market Quotation apply, an amount will be payable equal to
               (A) the sum of the Settlement Amount (determined by the Non-
               defaulting Party) in respect of the Terminated Transactions and
               the Unpaid Amounts owing to the Non-defaulting Party less (B) the
               Unpaid Amounts owing to the Defaulting Party. If that amount is a
               positive number, the Defaulting Party will pay it to the Non-
               defaulting Party; if it is a negative number, the Non-defaulting
               Party will pay the absolute value of that amount to the
               Defaulting Party.

               (4)  Second Method and Loss.  If the Second Method and Loss
               apply, an amount will be payable equal to the Non-defaulting
               Party's Loss in respect of this Agreement. If that amount is a
               positive number, the Defaulting Party will pay it to the Non-
               defaulting Party; if it is a negative number, the Non-defaulting
               Party will pay the absolute value of that amount to the
               Defaulting Party.

     (ii)  Termination Events.  If the Early Termination Date results from a
      Termination Event:--

               (1)  One Affected Party.  If there is one Affected Party, the
               amount payable will be determined in accordance with Section
               6(e)(i)(3), if Market Quotation applies, or Section 6(e)(i)(4),
               if Loss applies, except that, in either case, references to the
               Defaulting Party and to the Nondefaulting Party will be deemed to
               be references to the Affected Party and the party which is not
               the Affected Party, respectively, and, if Loss applies and fewer
               than all the Transactions are being terminated, Loss shall be
               calculated in respect of all Terminated Transactions.

               (2)  Two Affected Parties.  If there are two Affected Parties:--

                         (A)  if Market Quotation applies, each party will
                         determine a Settlement Amount in respect of the
                         Terminated Transactions, and an amount will be payable
                         equal to (I) the sum of (a) one-half of the difference
                         between the Settlement Amount of the party with the
                         higher Settlement Amount ("X") and the Settlement
                         Amount of the party with the lower Settlement Amount
                         ("Y") and (b) the Unpaid Amounts owing to X less (II)
                         the Unpaid Amounts owing to Y; and

                         (B)  if Loss applies, each party will determine its
                         Loss in respect of this Agreement (or, if fewer than
                         all the Transactions are being terminated, in respect
                         of all Terminated Transactions) and an amount will be
                         payable equal to one-half of the difference between the
                         Loss of the party with the higher Loss ("X") and the
                         Loss of the party with the lower Loss ("Y").

               If the amount payable is a positive number, Y will pay it to X;
               if it is a negative number, X will pay the absolute value of that
               amount to Y.

     (iii) Adjustment for Bankruptcy.  In circumstances where an Early
     Termination Date occurs because "Automatic Early Termination" applies in
     respect of a party, the amount determined under this Section 6(e) will be
     subject to such adjustments as are appropriate and permitted by law to
     reflect any payments or deliveries made by one party to the other under
     this Agreement (and retained by such other party) during the period from
     the relevant Early Termination Date to the date for payment determined
     under Section 6(d)(ii).

     (iv)  Pre-Estimate.  The parties agree that if Market Quotation applies an
     amount recoverable under this Section 6(e) is a reasonable pre-estimate of
     loss and not a penalty. Such amount is payable for the loss of bargain and
     the loss of protection against future risks and except as otherwise
     provided in this Agreement neither party will be entitled to recover any
     additional damages as a consequence of such losses.

                                       8
<PAGE>

7.   Transfer

Neither this Agreement nor any interest or obligation in or under this Agreement
may be transferred (whether by way of security or otherwise) by either party
without the prior written consent of the other party, except that:--

(a)  a party may make such a transfer of this Agreement pursuant to a
consolidation or amalgamation with, or merger with or into, or transfer of all
or substantially all its assets to, another entity (but without prejudice to any
other right or remedy under this Agreement); and

(b)  a party may make such a transfer of all or any part of its interest in any
amount payable to it from a Defaulting Party under Section 6(e).

Any purported transfer that is not in compliance with this Section will be void.

8.   Miscellaneous

(a)  Entire Agreement.  This Agreement constitutes the entire agreement and
understanding of the parties with respect to its subject matter and supersedes
all oral communication and prior writings with respect thereto.

(b)  Amendments.  No amendment, modification or waiver in respect of this
Agreement will be effective unless in writing (including a writing evidenced by
a facsimile transmission) and executed by each of the parties or confirmed by an
exchange of telexes or electronic messages on an electronic messaging system.

(c)  Survival of Obligations.  Without prejudice to Sections 2(a)(iii) and
6(c)(ii), the obligations of the parties under this Agreement will survive the
termination of any Transaction.

(d)  Remedies Cumulative.  Except as provided in this Agreement, the rights,
powers, remedies and privileges provided in this Agreement are cumulative and
not exclusive of any rights, powers, remedies and privileges provided by law.

(e)  Counterparts and Confirmations.

     (i)  This Agreement (and each amendment, modification and waiver in respect
     of it) may be executed and delivered in counterparts (including by
     facsimile transmission), each of which will be deemed an original.

     (ii) The parties intend that they are legally bound by the terms of each
     Transaction from the moment they agree to those terms (whether orally or
     otherwise). A Confirmation shall be entered into as soon as practicable and
     may be executed and delivered in counterparts (including by facsimile
     transmission) or be created by an exchange of telexes or by an exchange of
     electronic messages on an electronic messaging system, which in each case
     will be sufficient for all purposes to evidence a binding supplement to
     this Agreement. The parties will specify therein or through another
     effective means that any such counterpart, telex or electronic message
     constitutes a Confirmation.

(f)  No Waiver of Rights.  A failure or delay in exercising any right, power or
privilege in respect of this Agreement will not be presumed to operate as a
waiver, and a single or partial exercise of any right, power or privilege will
not be presumed to preclude any subsequent or further exercise, of that right,
power or privilege or the exercise of any other right, power or privilege.

(g)  Headings.  The headings used in this Agreement are for convenience of
reference only and are not to affect the construction of or to be taken into
consideration in interpreting this Agreement.

9.   Expenses

                                       9
<PAGE>

A Defaulting Party will, on demand, indemnify and hold harmless the other party
for and against all reasonable out-of-pocket expenses, including legal fees,
incurred by such other party by reason of the enforcement and protection of its
rights under this Agreement or any Credit Support Document to which the
Defaulting Party is a party or by reason of the early termination of any
Transaction, including, but not limited to, costs of collection.

10.  Notices

(a)  Effectiveness.  Any notice or other communication in respect of this
Agreement may be given in any manner set forth below (except that a notice or
other communication under Section 5 or 6 may not be given by facsimile
transmission or electronic messaging system) to the address or number or in
accordance with the electronic messaging system details provided (see the
Schedule) and will be deemed effective as indicated:--

     (i)   if in writing and delivered in person or by courier, on the date it
     is delivered;

     (ii)  if sent by telex, on the date the recipient's answerback is received;

     (iii) if sent by facsimile transmission, on the date that transmission is
     received by a responsible employee of the recipient in legible form (it
     being agreed that the burden of proving receipt will be on the sender and
     will not be met by a transmission report generated by the sender's
     facsimile machine);

     (iv)  if sent by certified or registered mail (airmail, if overseas) or the
     equivalent (return receipt requested), on the date that mail is delivered
     or its delivery is attempted; or

     (v)   if sent by electronic messaging system, on the date that electronic
     message is received,

unless the date of that delivery (or attempted delivery) or that receipt, as
applicable, is not a Local Business Day or that communication is delivered (or
attempted) or received, as applicable, after the close of business on a Local
Business Day, in which case that communication shall be deemed given and
effective on the first following day that is a Local Business Day.

(b)  Change of Addresses.  Either party may by notice to the other change the
address, telex or facsimile number or electronic messaging system details at
which notices or other communications are to be given to it.

11.  Governing Law and Jurisdiction

(a)  Governing Law.  This Agreement will be governed by and construed in
accordance with the law specified in the Schedule.

(b)  Jurisdiction.  With respect to any suit, action or proceedings relating to
this Agreement ("Proceedings"), each party irrevocably:--

     (i)  submits to the jurisdiction of the English courts, if this Agreement
     is expressed to be governed by English law, or to the non-exclusive
     jurisdiction of the courts of the State of New York and the United States
     District Court located in the Borough of Manhattan in New York City, if
     this Agreement is expressed to be governed by the laws of the State of New
     York; and,

     (ii) waives any objection which it may have at any time to the laying of
     venue of any Proceedings brought in any such court, waives any claim that
     such Proceedings have been brought in an inconvenient forum and further
     waives the right to object, with respect to such Proceedings, that such
     court does not have any jurisdiction over such party.

                                      10
<PAGE>

Nothing in this Agreement precludes either party from bringing Proceedings in
any other jurisdiction (outside, if this Agreement is expressed to be governed
by English law, the Contracting States, as defined in Section 1(3) of the Civil
Jurisdiction and Judgments Act 1982 or any modification, extension or re-
enactment thereof for the time being in force) nor will the bringing of
Proceedings in any one or more jurisdictions preclude the bringing of
Proceedings in any other jurisdiction.

(c)  Waiver of Immunities.  Each party irrevocably waives, to the fullest extent
permitted by applicable law, with respect to itself and its revenues and assets
(irrespective of their use or intended use), all immunity on the grounds of
sovereignty or other similar grounds from (i) suit, (ii) jurisdiction of any
court, (iii) relief by way of injunction, order for specific performance or for
recovery of property, (iv) attachment of its assets (whether before or after
judgment) and (v) execution or enforcement of any judgment to which it or its
revenues or assets might otherwise be entitled in any Proceedings in the courts
of any jurisdiction and irrevocably agrees, to the extent permitted by
applicable law, that it will not claim any such immunity in any Proceedings.

12.  Definitions

As used in this Agreement:--

"Additional Termination Event" has the meaning specified in Section 5(b).

"Affected Party" has the meaning specified in Section 5(b).

"Affected Transactions" means (a) with respect to any Termination Event
consisting of an Illegality, all Transactions affected by the occurrence of such
Termination Event and (b) with respect to any other Termination Event, all
Transactions.

"Affiliate" means, subject to the Schedule, in relation to any person, any
entity controlled, directly or indirectly, by the person, any entity that
controls, directly or indirectly, the person or any entity directly or
indirectly under common control with the person.  For this purpose, "control" of
any entity or person means ownership of a majority of the voting power of the
entity or person.

"Applicable Rate" means:--

(a)  in respect of obligations payable or deliverable (or which would have been
but for Section 2(a)(iii)) by a Defaulting Party, the Default Rate;

(b)  in respect of an obligation to pay an amount under Section 6(e) of either
party from and after the date (determined in accordance with Section 6(d)(ii))
on which that amount is payable, the Default Rate;

(c)  in respect of all other obligations payable or deliverable (or which would
have been but for Section 2(a)(iii)) by a Non-defaulting Party, the Non-default
Rate; and

(d)  in all other cases, the Termination Rate.

"consent" includes a consent, approval, action, authorization, exemption,
notice, filing, registration or exchange control consent.

"Credit Event Upon Merger" has the meaning specified in Section 5(b).

"Credit Support Document" means any agreement or instrument that is specified as
such in this Agreement.

"Credit Support Provider" has the meaning specified in the Schedule.

                                      11
<PAGE>

"Default Rate" means a rate per annum equal to the cost (without proof or
evidence of any actual cost) to the relevant payee (as certified by it) if it
were to fund or of funding the relevant amount plus 1% per annum.

"Defaulting Party" has the meaning specified in Section 6(a).

"Early Termination Date" means the date determined in accordance with Section
6(a) or 6(b)(iii).

"Event of Default" has the meaning specified in Section 5(a) and, if applicable,
in the Schedule.

"Illegality" has the meaning specified in Section 5(b).

"law" includes any treaty, law, rule or regulation and "lawful" and "unlawful"
will be construed accordingly.

"Local Business Day" means, subject to the Schedule, a day on which commercial
banks are open for business (including dealings in foreign exchange and foreign
currency deposits) (a) in relation to any obligation under Section 2(a)(i), in
the place(s) specified in the relevant Confirmation or, if not so specified, as
otherwise agreed by the parties in writing or determined pursuant to provisions
contained, or incorporated by reference, in this Agreement, (b) in relation to
any other payment, in the place where the relevant account is located, (c) in
relation to any notice or other communication, including notice contemplated
under Section 5(a)(i), in the city specified in the address for notice provided
by the recipient and, in the case of a notice contemplated by Section 2(b), in
the place where the relevant new account is to be located and (d) in relation to
Section 5(a)(v)(2), in the relevant locations for performance with respect to
such Specified Transaction.

"Loss" means, with respect to this Agreement or one or more Terminated
Transactions, as the case may be, and a party, an amount that party reasonably
determines in good faith to be its total losses and costs (or gain, in which
case expressed as a negative number) in connection with this Agreement or that
Terminated Transaction or group of Terminated Transactions, as the case may be,
including any loss of bargain, cost of funding or, at the election of such party
but without duplication, loss or cost incurred as a result of its terminating,
liquidating, obtaining or reestablishing any hedge or related trading position
(or any gain resulting from any of them).  Loss includes losses and costs (or
gains) in respect of any payment or delivery required to have been made
(assuming satisfaction of each applicable condition precedent) on or before the
relevant Early Termination Date and not made, except, so as to avoid
duplication, if Section 6(e)(i)(1) or (3) or 6(e)(ii)(2)(A) applies. Loss does
not include a party's legal fees and out-of-pocket expenses referred to under
Section 9.  A party will determine its Loss as of the relevant Early Termination
Date, or, if that is not reasonably practicable, as of the earliest date
thereafter as is reasonably practicable.  A party may (but need not) determine
its Loss by reference to quotations of relevant rates or prices from one or more
leading dealers in the relevant markets.

"Market Quotation" means, with respect to one or more Terminated Transactions
and a party making the determination, an amount determined on the basis of
quotations from Reference Market-makers.  Each quotation will be for an amount,
if any, that would be paid to such party (expressed as a negative number) or by
such party (expressed as a positive number) in consideration of an agreement
between such party (taking into account any existing Credit Support Document
with respect to the obligations of such party) and the quoting Reference Market-
maker to enter into a transaction (the "Replacement Transaction") that would
have the effect of preserving for such party the economic equivalent of any
payment or delivery (whether the underlying obligation was absolute or
contingent and assuming the satisfaction of each applicable condition precedent)
by the parties under Section 2(a)(i) in respect of such Terminated Transaction
or group of Terminated Transactions that would, but for the occurrence of the
relevant Early Termination Date, have been required after that date.  For this
purpose, Unpaid Amounts in respect of the Terminated Transaction or group of
Terminated Transactions are to be excluded but, without limitation, any payment
or delivery that would, but for the relevant Early Termination Date, have been
required (assuming satisfaction of each applicable condition precedent) after
that Early Termination Date is to be included.  The Replacement Transaction
would be subject to such documentation as such party and the Reference Market-
maker may, in good faith, agree.  The party making the determination (or its
agent) will request each Reference Market-maker to provide its quotation to the
extent reasonably practicable as of the same day and time (without regard to
different time zones) on or as soon as reasonably practicable after the relevant
Early Termination Date.

                                      12
<PAGE>

The day and time as of which those quotations are to be obtained will be
selected in good faith by the party obliged to make a determination under
Section 6(e), and, if each party is so obliged, after consultation with the
other. If more than three quotations are provided, the Market Quotation will be
the arithmetic mean of the quotations, without regard to the quotations having
the highest and lowest values. If exactly three such quotations are provided,
the Market Quotation will be the quotation remaining after disregarding the
highest and lowest quotations. For this purpose, if more than one quotation has
the same highest value or lowest value, then one of such quotations shall be
disregarded. If fewer than three quotations are provided, it will be deemed that
the Market Quotation in respect of such Terminated Transaction or group of
Terminated Transactions cannot be determined.

"Non-default Rate" means a rate per annum equal to the cost (without proof or
evidence of any actual cost) to the Non-defaulting Party (as certified by it) if
it were to fund the relevant amount.

"Non-defaulting Party" has the meaning specified in Section 6(a).

"Potential Event of Default" means any event which, with the giving of notice or
the lapse of time or both, would constitute an Event of Default.

"Reference Market-makers" means four leading dealers in the relevant market
selected by the party determining a Market Quotation in good faith (a) from
among dealers of the highest credit standing which satisfy all the criteria that
such party applies generally at the time in deciding whether to offer or to make
an extension of credit and (b) to the extent practicable, from among such
dealers having an office in the same city.

"Scheduled Payment Date" means a date on which a payment or delivery is to be
made under Section 2(a)(i) with respect to a Transaction.

"Set-off" means set-off, offset, combination of accounts, right of retention or
withholding or similar right or requirement to which the payer of an amount
under Section 6 is entitled or subject (whether arising under this Agreement,
another contract, applicable law or otherwise) that is exercised by, or imposed
on, such payer.

"Settlement Amount" means, with respect to a party and any Early Termination
Date, the sum of:--

(a)  the Market Quotations (whether positive or negative) for each Terminated
Transaction or group of Terminated Transactions for which a Market Quotation is
determined; and

(b)  such party's Loss (whether positive or negative and without reference to
any Unpaid Amounts) for each Terminated Transaction or group of Terminated
Transactions for which a Market Quotation cannot be determined or would not (in
the reasonable belief of the party making the determination) produce a
commercially reasonable result.

"Specified Entity" has the meaning specified in the Schedule.

"Specified Indebtedness" means, subject to the Schedule, any obligation (whether
present or future, contingent or otherwise, as principal or surety or otherwise)
in respect of borrowed money.

"Specified Transaction" means, subject to the Schedule, (a) any transaction
(including an agreement with respect thereto) now existing or hereafter entered
into between one party to this Agreement (or any Credit Support Provider of such
party or any applicable Specified Entity of such party) and the other party to
this Agreement (or any Credit Support Provider of such other party or any
applicable Specified Entity of such other party) which is a rate swap
transaction, basis swap, forward rate transaction, commodity swap, commodity
option, equity or equity index swap, equity or equity index option, bond option,
interest rate option, foreign exchange transaction, cap transaction, floor
transaction, collar transaction, currency swap transaction, cross-currency rate
swap transaction, currency option or any other similar transaction (including
any option with respect to any of these transactions), (b) any combination of
these transactions and (c) any other transaction identified as a Specified
Transaction in this Agreement or the relevant confirmation.

                                      13
<PAGE>

"Terminated Transactions" means with respect to any Early Termination Date (a)
if resulting from a Termination Event, all Affected Transactions and (b) if
resulting from an Event of Default, all Transactions (in either case) in effect
immediately before the effectiveness of the notice designating that Early
Termination Date (or, if "Automatic Early Termination" applies, immediately
before that Early Termination Date).

"Termination Event" means an Illegality or, if specified to be applicable, a
Credit Event Upon Merger or an Additional Termination Event.

"Termination Rate" means a rate per annum equal to the arithmetic mean of the
cost (without proof or evidence of any actual cost) to each party (as certified
by such party) if it were to fund or of funding such amounts.

"Unpaid Amounts" owing to any party means, with respect to an Early Termination
Date, the aggregate of (a) in respect of all Terminated Transactions, the
amounts that became payable (or that would have become payable but for Section
2(a)(iii)) to such party under Section 2(a)(i) on or prior to such Early
Termination Date and which remain unpaid as at such Early Termination Date and
(b) in respect of each Terminated Transaction, for each obligation under Section
2(a)(i) which was (or would have been but for Section 2(a)(iii)) required to be
settled by delivery to such party on or prior to such Early Termination Date and
which has not been so settled as at such Early Termination Date, an amount equal
to the fair market value of that which was (or would have been) required to be
delivered as of the originally scheduled date for delivery, in each case
together with (to the extent permitted under applicable law) interest, in the
currency of such amounts, from (and including) the date such amounts or
obligations were or would have been required to have been paid or performed to
(but excluding) such Early Termination Date, at the Applicable Rate.  Such
amounts of interest will be calculated on the basis of daily compounding and the
actual number of days elapsed.  The fair market value of any obligation referred
to in clause (b) above shall be reasonably determined by the party obliged to
make the determination under Section 6(e) or, if each party is so obliged, it
shall be the average of the fair market values reasonably determined by both
parties.

                                      14
<PAGE>

IN WITNESS WHEREOF the parties have executed this document on the respective
dates specified below with effect from the date specified on the first page of
this document.

      United Air Lines, Inc.                              AFE Trust
------------------------------------           ------------------------------
      (Name of Party)                                  (Name of Party)

By:  _______________________________           By:_________________________
     Name:                                        Name:
     Title:                                       Title:
     Date:                                        Date:

                                      15
<PAGE>

                                   SCHEDULE

                                    to the

                               MASTER AGREEMENT

                    (Local Currency - Single Jurisdiction)

                                    between

                     AFE Trust, a statutory business trust
                     organized under the laws of Delaware,
                   together with its successors and assigns

                                  ("Party A")
                                    -------

                                      and

                United Air Lines, Inc., a Delaware corporation

                                  ("Party B")
                                    -------

                                    PART 1

                            Termination Provisions
                            ----------------------

      1.1.  "Specified Entity" means in relation to Party A for the purpose of

                    Section 5(a)(v)          Not Applicable
                    Section 5(a)(vi)         Not Applicable
                    Section 5(a)(vii)        Not Applicable

                    and means in relation to Party B for the purpose of

                    Section 5(a)(v)          Not Applicable
                    Section 5(a)(vi)         Not Applicable
                    Section 5(a)(vii)        Not Applicable

      1.2.  Except for the events set forth in Section 5(a)(i) and 5(a)(viii)
of the Master Agreement as incorporated in this Confirmation, in the case of
Party B, and Section 5(a)(vii)(4) of the Master Agreement as incorporated in
this Confirmation, in the case of Party A and Party B, the "Events of Default"
set forth in Section 5(a) of the Master Agreement as incorporated in this
Confirmation will not apply to Party A or Party B.

      1.3.  The "Cross-Default" provisions of Section 5(a)(vi) of the Master
Agreement as incorporated in this Confirmation will not apply to Party A or
Party B.
<PAGE>

      1.4.  The "Illegality" provisions of Section 5(b)(i) of the Master
Agreement as incorporated in this Confirmation and the "Credit Event Upon
Merger" provisions of Section 5(b)(ii) of the Master Agreement as incorporated
in this Confirmation will not apply to Party A or Party B.

      1.5.  The "Automatic Early Termination" provisions of Section 6(a) of
the Master Agreement as incorporated in this Confirmation will not apply to
Party A or Party B.

      1.6.  "Payments on Early Termination."  Paragraph 6(e) of the Master
Agreement as incorporated in this Confirmation is amended by deleting the
existing provisions thereof and substituting the following:

      "Notwithstanding anything to the contrary in this Confirmation, the amount
      payable on any early termination of the Transaction evidenced hereby
      (other than in respect of an Additional Termination Event relating to a
      Leased Aircraft) shall be the sum of the Senior Swap Termination Amount
      and Junior Swap Termination Amount set forth on Appendix II to this
      Schedule unless prior to the date of the occurrence of the related Early
      Termination Date, the Investment Banking Firm, engaged by the Indenture
      Trustee on behalf of Party A, is able to obtain a Senior Qualified
      Substitute  from the proceeds received under the Owned Aircraft Indenture
      identified in paragraph 2 "Summary of Transaction Terms" of this
      Confirmation in respect of the Senior Swap Termination Amount and/or a
      Junior Qualified Substitute from the proceeds received under such Owned
      Aircraft Indenture in respect of the Junior Swap Termination Amount and
      the respective cost thereof (including for such purpose the fees and
      expenses of the Investment Banking Firm incurred in procuring the relevant
      Qualified Substitute) is less than or equal to the corresponding scheduled
      amounts for the Senior Swap Termination Amount and Junior Swap Termination
      Amount, respectively, in which case the amount payable by Party B on early
      termination of this Transaction (other than in respect of an Additional
      Termination Event relating to a Leased Aircraft) shall be the applicable
      Senior Qualified Substitute Purchase Amount and/or Junior Qualified
      Substitute Purchase Amount, as the case may be, plus, in either case, the
      amount of all other unpaid sums due and payable by Party B under this
      Confirmation on or prior to the relevant Early Termination Date.  Upon
      receipt of any such scheduled amounts and/or Qualified Substitute Purchase
      Amounts, Party A shall apply the proceeds thereof to the acquisition of
      the applicable Qualified Substitute and/or the funding of the Swap
      Substitute Account, as the case may be, all as provided in Section 2.13 of
      the AFE Trust Indenture."

      Upon any early termination of the Transaction evidenced by this
Confirmation either in whole or in part due to an Additional Termination Event
relating to a Leased Aircraft on a day other than a Periodic Swap Payment Date,
Party A or Party B, as the case may be, shall make the Final Periodic Payment.

      Notwithstanding the foregoing, the parties agree that in the event the
Transaction evidenced by this Confirmation is terminated pursuant to Section 6
of the Master Agreement as incorporated in this Confirmation, except to the
extent of any Final Periodic Payment payable by Party A, Party A shall not be
required to make any payments arising out of such termination to Party B.

      1.7.  Limitations on Conditions Precedent.  Notwithstanding Section 2(a)
              -----------------------------------
of the Master Agreement as incorporated in this Confirmation, the obligation of
Party B to make each payment or delivery specified in this Confirmation, so long
as it shall remain in effect, shall not be subject to any conditions precedent,
and, without limiting the foregoing, Party B agrees that it will make each such
payment or delivery without offset, counterclaim or defense and whether any
other Event of Default, Potential Event of Default or Termination Event exists
with respect to Party A or otherwise.

      1.8.  "Additional Termination Event" will apply.  Each of the following
shall constitute an Additional Termination Event under this Confirmation:

              1.8.1  Leased Aircraft
<PAGE>

                       (x)  If an Event of Loss under and as defined in a Lease
                            in respect of a Leased Aircraft occurs and Party B
                            does not substitute another aircraft pursuant to
                            such Lease and, in connection with such
                            substitution, obtain a Ratings Confirmation, then
                            the Transaction evidenced by this Confirmation, to
                            the extent relating to such Lease, shall terminate
                            in part on the related Early Termination Date,
                            without any termination payment by either Party A or
                            Party B under Section 6(e) of the Master Agreement
                            as incorporated in this Confirmation other than the
                            Final Periodic Payment to be made hereunder.

                       (y)  If Party B elects an early termination of a Lease
                            and the related Leased Equipment Notes are prepaid
                            as a result thereof, then the Transaction evidenced
                            by this Confirmation, to the extent relating to such
                            Lease, shall terminate in part on the related Early
                            Termination Date, without any termination payment by
                            either Party A or Party B under Section 6(e) of the
                            Master Agreement as incorporated in this
                            Confirmation other than the Final Periodic Payment
                            to be made hereunder.

                      (z)   In the event of a Lease Event of Default under and
                            as defined in a Lease in respect of a Leased
                            Aircraft, the Transaction evidenced by this
                            Confirmation, to the extent relating to such Lease,
                            shall terminate in part upon the application of the
                            proceeds of the disposition of the related Leased
                            Aircraft to the payment of the AFE Trust Notes under
                            the AFE Indenture (through application of the
                            payments made on the related Leased Equipment Notes
                            as a result of such disposition) without any
                            termination payment by either Party A or Party B
                            under Section 6(e) of the Master Agreement as
                            incorporated in this Confirmation other than the
                            Final Periodic Payment to be made hereunder.

In the event that the Transaction evidenced by this Confirmation is terminated
in part as a result of the events noted above, either Party A or Party B (in the
case of an event described in subclause (x) or (y) above) or Party A (in the
case of an event described in subclause (z) above) may terminate the affected
portion of the Transaction by designating an Early Termination Date with respect
to such affected portion, the terminated  portion thereof shall be the
"Terminated Transaction", the Final Periodic Payment, if any, shall become due
and payable,  the Principal Notional Amount applicable to this Confirmation
shall be reduced by an amount equal to the portion of the Principal Notional
Amount allocable to the affected Leased Aircraft as specified in Exhibit A to
Appendix I to this Schedule to the Master Agreement as incorporated in this
Confirmation and the Senior Swap Termination Amount and the Junior Swap
Termination Amount applicable to this Confirmation shall be reduced by an amount
equal to the Senior Swap Termination Amount and Junior Swap Termination Amount,
respectively, allocable to the affected Leased Aircraft as specified in Exhibit
A to Appendix II to this Schedule to the Master Agreement as incorporated in
this Confirmation.  No such termination shall release Party B from its
obligation to make any payment to Party A under Section 2(a)(i) of the Master
Agreement as incorporated in this Confirmation or other applicable provision of
this Confirmation due on or before the date of such termination.

              1.8.2  Owned Aircraft:

                       (x)  If an Event of Loss occurs under and as defined in
                            the Owned Aircraft Indenture securing, and
                            identified in paragraph 2 "Summary of Transaction
                            Terms" of, this Confirmation and Party B does not
                            substitute another aircraft therefor in accordance
                            with the provisions of Section 5.01 of such Owned
                            Aircraft Indenture and obtain a Ratings Confirmation
                            in connection with such substitution, then the
                            Transaction evidenced by this Confirmation shall
                            terminate upon payment in full of the United
                            Equipment Notes (such term

                                      -3-
<PAGE>

                            having the same meaning herein as such term has in
                            the Intercreditor Agreement) issued under such Owned
                            Aircraft Indenture and Party B shall make a
                            termination payment under Section 6(e) of the Master
                            Agreement as incorporated in this Confirmation in
                            the amount specified herein for the related Early
                            Termination Date.

                       (y)  If Party B elects to prepay and does prepay the
                            United Equipment Notes issued under the Owned
                            Aircraft Indenture securing, and identified in
                            paragraph 2 "Summary of Transaction Terms" of, this
                            Confirmation and Party B does not secure its
                            obligations under this Confirmation with another
                            aircraft pursuant to paragraph (n) of Part 5 of this
                            Schedule to the Master Agreement as incorporated in
                            this Confirmation and obtain a Ratings Confirmation
                            in connection therewith, then the Transaction
                            evidenced by this Confirmation shall terminate upon
                            the prepayment in full of such United Equipment
                            Notes and Party B shall make a termination payment
                            under Section 6(e) of the Master Agreement as
                            incorporated in this Confirmation in the amount
                            specified herein for the related Early Termination
                            Date.

                       (z)  If an Event of Default occurs under and as defined
                            in the Owned Aircraft Indenture securing, and
                            identified in paragraph 2 "Summary of Transaction
                            Terms" of, this Confirmation, the Transaction
                            evidenced by this Confirmation shall terminate upon
                            the disposition of the Owned Aircraft subject to the
                            lien of such Owned Aircraft Indenture and the
                            application of the proceeds thereof to the
                            obligations of Party B secured under such Owned
                            Aircraft Indenture (including the obligation of
                            Party B to make the payment on early termination
                            specified in Section 6(e) of the Master Agreement as
                            incorporated in this Confirmation by reason
                            thereof), and upon the application of such proceeds
                            Party B shall make a termination payment under said
                            Section 6(e) in the amount specified herein for the
                            related Early Termination Date.

In the event that the Transaction evidenced by this Confirmation is terminated
as a result of the events noted in this clause (ii), Party B shall be the
"Affected Party" with respect thereto.

                                    PART 2

                        Agreement to Deliver Documents
                        ------------------------------

For the purpose of Sections 4(a) of the Master Agreement as incorporated in this
Confirmation, each party agrees to deliver the following documents, as
applicable:

<TABLE>
<CAPTION>
Party required
      to
   deliver                                                                       Date by which to be
   document                         Form/Document/Certificate                         delivered
   --------                         -------------------------                         ---------
<S>            <C>                                                              <C>
    Party A    A certificate of an authorized officer of the party,             Upon execution of
               certifying the names, true signatures and authority of the       this Confirmation
               officers of the party signing this Confirmation.

    Party B    A certificate of an authorized officer of the party,             Upon execution of
               certifying the names, true signatures and authority of the       this Confirmation.
               officers of the party signing this Confirmation.
</TABLE>

                                      -4-
<PAGE>

<TABLE>
<CAPTION>
Party required
      to
   deliver                                                                        Date by which to be
   document                          Form/Document/Certificate                         delivered
   --------                          -------------------------                         ---------
<S>             <C>                                                              <C>
    Party A     Legal Opinion of Party A.                                        Upon execution of
                                                                                 this Confirmation.

    Party B     Legal Opinion of Party B.                                        Upon execution of
                                                                                 this Confirmation.

    Party B     Audited annual consolidated financial statements of Party B,     Promptly upon
                prepared in accordance with accounting principles that are       demand by Party A.
                generally accepted in the United States.
</TABLE>

                                    PART 3

                                 Miscellaneous
                                 -------------

      3.1  Addresses for Notices.  For the purpose of Section 10(a) of the
Master Agreement as incorporated in this Confirmation:

      Address for notices or communications to Party A:

                 Address:

                 c/o Wilmington Trust Company
                 Rodney Square North
                 1100 North Market Street
                 Wilmington, Delaware 19890
                 Attention: Corporate Trust Administration
                 Facsimile: (302) 651-8882
                 Telephone: (302) 651-1343

                 (For all purposes.)

                                      -5-
<PAGE>

      Address for notices or communications to Party B:

                 Address:

                 If by U.S. Mail
                 ---------------

                 United Air Lines, Inc.
                 P.O. Box 66100
                 Chicago, Illinois 60666
                 Attention:  Vice President and Treasurer
                 Facsimile: (847) 700-7117
                 Telephone: (847) 700-4000

                 If by Overnight Courier
                 -----------------------

                 1200 East Algonquin Road
                 Elk Grove Township, Illinois 60007
                 Attention: Vice President and Treasurer
                 Facsimile: (847) 700-7117
                 Telephone: (847) 700-4000

      3.2  Calculation Agent.  The Calculation Agent is Party B, except that
Party A shall be the Calculation Agent for purposes of any payment to be made
under Section 6 of the Master Agreement as incorporated in this Confirmation.

      3.3  Credit Support Document.

                 With respect to Party A:  None

                 With respect to Party B:  None.

      3.4  Credit Support Provider.

                 To support Party A: None

                 To support Party B: None

      3.5  Netting of Payments. The netting of payments provision set forth in
             -------------------
Section 2(c) of the Master Agreement as incorporated in this Confirmation will
not apply to the Transaction evidenced by this Confirmation.

      3.6  "Affiliate" will have the meaning specified in Section 12 of the
              ---------
Master Agreement as incorporated in this Confirmation.

                                    PART 4

                               Other Provisions
                               ----------------

      4.1  Definitions.  The Master Agreement, this Schedule, and the
             -----------
Transaction evidenced by this Confirmation incorporate and are subject to the
1991 ISDA Definitions (as supplemented by the 1998 Supplement to the 1991 ISDA
Definitions) (the "Definitions") as published by the International Swaps and
                   -----------
Derivatives Association, Inc. ("ISDA"), and will be governed in all respects by
                                ----
the Definitions (except that references to "Swap Transactions" in the
Definitions will be deemed to be references to "Transactions"). The Definitions
                                                ------------
are incorporated by reference in, and

                                      -6-
<PAGE>

made part of, the Master Agreement and this Confirmation as if set forth in full
in this Schedule. In the event of any inconsistency between the provisions of
the Master Agreement and the Definitions, the Master Agreement will prevail. In
the event of any inconsistency between the provisions of this Confirmation and
the Master Agreement or the Definitions, each as incorporated in this
Confirmation, this Confirmation will prevail for the purpose of this
Transaction. This Confirmation evidences and constitutes a separate and
independent Transaction which incorporates the Master Agreement, this Schedule
and the Definitions by reference and each reference to a "Confirmation" shall be
so construed; any provision of the Master Agreement, this Schedule or the
Definitions to the contrary or inconsistent with the foregoing, including
Section 1(c) of the Master Agreement, will not apply.

      As used herein, each of the following terms shall have the meanings set
forth below:

      (i)    "Final Periodic Payment" means, in connection with the reduction in
             the Principal Notional Amount of the Transaction evidenced by this
             Confirmation due to the occurrence of an Additional Termination
             Event relating to Leased Aircraft, the swap payment to be made by
             Party A or Party B, as the case may be, on the related Early
             Termination Date if and to the extent such date does not coincide
             with a Periodic Swap Payment Date shall equal the amount determined
             in accordance with the Periodic Swap Payment Formula had such date
             been a Periodic Swap Payment Date.

      (ii)   "Investment Banking Firm" means an independent investment banking
             firm of nationally recognized standing engaged by the Indenture
             Trustee on behalf of Party A (that is, so long as no event of
             default exists under any Owned Aircraft Indenture, any Lease (such
             term having the same meaning herein as such term has in the
             Intercreditor Agreement) relating to the Leased Aircraft or the 747
             Aircraft (such term having the same meaning herein as such term has
             in the Intercreditor Agreement), acceptable to Party B)

      (iii)  "Junior Periodic Swap Payment" means, as of any Periodic Swap
             Payment Date, the "Periodic Payment Amount" (as defined in and
             calculated pursuant to the definition of "Periodic Swap Payment
             Formula") for such date for the Certificates.

      (iv)   "Junior Qualified Substitute" means any direct pay letter of
             credit, swap (cancellable by Party A only) or other interest rate
             hedging instrument, in each case that contains terms that would
             make available to Party A the amount of funds that would be
             necessary to make the Junior Periodic Swap Payments provided in
             this Confirmation assuming a Eurodollar Rate not in excess of 2.96%
             per annum from the Early Termination Date to the date of the last
             scheduled Junior Periodic Swap Payment as set forth in Appendix I
             to this Schedule and which shall be in form and substance
             (including, without limitation, as to the assumed Eurodollar Rate),
             and from an issuer, acceptable to the Rating Agencies and in
             respect of which the Rating Agencies shall have issued a Ratings
             Confirmation.

      (v)    "Junior Qualified Substitute Purchase Amount" means the amount to
             be paid to a financial counterparty in order to obtain from such
             financial counterparty commitments in the form of a Junior
             Qualified Substitute plus the fees of the Investment Banking Firm
                                  ----
             incurred in procuring the Junior Qualified Substitute.

      (vi)   "Junior Swap Termination Amount" means the amount, determined in
             accordance with Appendix II to this Schedule, to be paid on the
             Early Termination Date.

      (vii)  "Periodic Swap Payment" means, with respect to each Periodic Swap
             Payment Date, the sum of the "Periodic Payment Amounts" (as defined
             in and calculated pursuant to the definition of "Periodic Swap
             Payment Formula") for the Series A-1 AFE Trust Notes, the Series A-
             2 AFE Trust Notes, the Series B AFE Trust Notes and the
             Certificates for such Periodic Swap Payment Date.

                                      -7-
<PAGE>

      (viii) "Periodic Swap Payment Date" means each of the dates set forth on
             Appendix I to this Schedule, (and, if later, each January 1 and
             July 1 thereafter until the Principal Notional Amount for each of
             the Series A-1 AFE Trust Notes, the Series A-2 AFE Trust Notes, the
             Series B AFE Trust Notes and the Certificates are reduced to zero
             in accordance with the provisions thereof), each of which shall
             constitute a Period End Date for all purposes of this Confirmation.

      (ix)   "Periodic Swap Payment Formula" means, for each of the Series A-1
             AFE Trust Notes, the Series A-2 AFE Trust Notes, the Series B AFE
             Trust Notes and the Certificates then outstanding, the following
             formula:

                  Periodic Payment Amount = (((Eurodollar Rate + 0.90%) x actual
                  days in Swap Payment Period) - (Applicable Fixed Rate x number
                  of days in Swap Payment Period calculated on the basis of a
                  360-day year with twelve 30-day months) x Principal Notional
                  Amount/360

                  Where:

                  "Periodic Payment Amount" means the amount (x) to be paid by
                  Party A, if the result is positive, or (y) the absolute value
                  of which is to be paid by Party B, if the result is negative;
                  provided, however, that the obligation of Party A is limited
                  to funds available to Party A for distribution to Party B
                  under Article 3 of the AFE Trust Indenture.

                  "Applicable Fixed Rate" means 7.783% per annum, in the case of
                  the Series A-1 AFE Trust Notes, 7.730% per annum, in the case
                  of the Series A-2 AFE Trust Notes, 8.030% per annum, in the
                  case of the Series B AFE Trust Notes and 8.140% per annum, in
                  the case of the Certificates.

      (x)    "Principal Notional Amount" means, in respect of each of the Series
             A-1 AFE Trust Notes, the Series A-2 AFE Trust Notes, the Series B
             AFE Trust Notes and the Certificates, as of any Periodic Swap
             Payment Date, the amount set forth as the principal notional amount
             thereof for the Transaction evidenced by this Confirmation as set
             forth in Appendix I to this Schedule, as such principal notional
             amount may be adjusted from time to time in accordance with the
             terms of this Confirmation.

      (xi)   "Qualified Substitute" means, with respect to the Transaction
             evidenced by this Confirmation, the Senior Qualified Substitute
             and/or the Junior Qualified Substitute, as the case may be.

      (xii)  "Qualified Substitute Purchase Amounts" means the Senior Qualified
             Substitute Purchase Amount and/or the Junior Qualified Substitute
             Purchase Amount, as the context may require.

      (xiii) "Senior Periodic Swap Payment" means, as of any Periodic Swap
             Payment Date, the sum of the "Periodic Payment Amounts" (as defined
             in and calculated pursuant to the definition of "Periodic Swap
             Payment Formula") for the Series A-1 AFE Trust Notes, the Series A-
             2 AFE Trust Notes, and the Series B AFE Trust Notes for such date.

      (xiv)  "Senior Qualified Substitute" means any direct pay letter of
             credit, swap (cancellable by Party A only) or other interest rate
             hedging instrument, in each case that contains terms that would
             make available to Party A the amount of funds that would be
             necessary to make the Senior Periodic Swap Payments provided in
             this Confirmation assuming a Eurodollar Rate not in excess of 2.96%
             per annum from the Early Termination Date to the date of the last
             scheduled Senior Periodic Swap Payment as set forth in Appendix I
             to this Schedule and which shall be in form and substance
             (including, without limitation, as to the assumed Eurodollar Rate),
             and from an issuer,

                                      -8-
<PAGE>

              acceptable to the Rating Agencies and in respect of which the
              Rating Agencies shall have issued a Ratings Confirmation.

      (xv)    "Senior Qualified Substitute Purchase Amount" means the amount to
              be paid to a financial counterparty in order to obtain from such
              financial counterparty commitments in the form of a Senior
              Qualified Substitute plus the fees of the Investment Banking Firm
                                   ----
              incurred in procuring the Senior Qualified Substitute.

      (xvi)   "Senior Swap Termination Amount" means the amount, determined in
              accordance with Appendix II to this Schedule, to be paid on the
              Early Termination Date.

      (xvii)  "Swap Payment Period" means each Calculation Period.

      (xviii) "Termination Currency" means United States Dollars.

      (xix)   "Transaction" means the "Transaction" under, as defined in and
              evidenced by this Confirmation.

      Capitalized terms used herein but not otherwise defined herein or in the
Definitions shall have the meanings assigned to them in the Indenture dated as
of July 31, 2000 (the "AFE Indenture"), as amended from time to time, between
                       -------------
Party A and State Street Bank and Trust Company of Connecticut, National
Association (the "AFE Indenture"), including, without limitation, each of the
                  -------------
following terms:

      "747 Lease Agreement", "AFE Trust Notes", "Certificates", "Eurodollar
      Rate", "Indenture Trustee", "Intercreditor Agreement", "Leased Aircraft",
      "Leased Aircraft Indenture", "Leased Equipment Notes", "Owned Aircraft",
      "Owned Aircraft Indenture", "Rating Agencies", "Ratings Confirmation",
      "Series A-1 AFE Trust Notes", "Series A-2 AFE Trust Notes", "Series B AFE
      Trust Notes" and "Swap Substitute Account".

      4.0.2  Severability.  If any term, provision, covenant, or condition of
             ------------
this Confirmation, or the application thereof to any party or circumstance,
shall be held to be invalid or unenforceable (in whole or in part) for any
reason, the remaining terms, provisions, covenants, and conditions hereof shall
continue in full force and effect as if this Confirmation had been executed with
the invalid or unenforceable portion eliminated, so long as this Confirmation as
so modified continues to express, without material change, the original
intentions of the parties as to the subject matter of this Confirmation and the
deletion of such portion of this Confirmation will not substantially impair the
respective benefits or expectations of the parties to this Confirmation;
provided, however, that this severability provision shall not be applicable if
--------  -------
any provision, as modified by the express provisions of this Schedule to the
Master Agreement, of Section 2, 5, 6, or 11 of the Master Agreement as
incorporated in this Confirmation (or any definition or provision in Section 12
of the Master Agreement as incorporated in this Confirmation to the extent it
relates to, or is used in or in connection with any such Section) shall be so
held to be invalid or unenforceable.

      4.0.3. Non-petition.  Party B agrees that it will not, prior to the date
             ------------
following the payment in full of all the Leased Equipment Notes issued pursuant
to the related Leased Aircraft Indentures and the expiration of all applicable
preference periods under the United States Bankruptcy Code or other applicable
law relating to any such payment, acquiesce, petition or otherwise invoke or
cause Party A or any other person or entity to invoke the process of any
governmental authority for the purpose of commencing or sustaining a case
(whether voluntary or involuntary) against Party A under any bankruptcy,
insolvency or similar law or appointing a receiver, liquidator, assignee,
trustee, custodian, sequestrator or other similar official of Party A or any
substantial part of its property or ordering the winding-up or liquidation of
the affairs of Party A.

      4.0.4  Limitation of Liability.  The obligations of Party A under this
             -----------------------
Confirmation, and in respect of the Transaction evidenced hereby, including,
without limitation, its obligation to make any Periodic Swap Payment or Final
Periodic Payment, are expressly limited to the extent of the funds, if any, made
available for such payment to Party A under, and in accordance with, the
priorities of payments set forth in Article 3 of the AFE Indenture, and any
difference between the amount of any Party A payment calculated in accordance
with this Confirmation and any such amount available on the date for payment
shall not constitute a claim against, or obligation of, Party A.  Party B
acknowledges

                                      -9-
<PAGE>

that no claim shall arise against Party A for any such difference. The
obligations of Party A under this Confirmation, and in respect of the
Transaction evidenced hereby, are solely the obligations of Party A, to the
extent of the funds, if any, made available therefor to Party A under and in
accordance with the priorities of payments set forth in Article 3 of the AFE
Indenture. No recourse under any obligation, covenant or agreement of Party A
contained in this Confirmation shall be had against any incorporator,
stockholder, agent, affiliate, officer, employee or trustee of Party A, as such,
by the enforcement of any assessment or by any legal or equitable proceeding, by
virtue of any statute or otherwise; it being expressly agreed and understood
that the agreements of Party A contained in this Confirmation are solely trust
obligations of Party A and that no personal liability whatsoever shall attach to
or be incurred by the incorporators, stockholders, agents, affiliates, officers,
employees or trustees of Party A, as such, or any of them, under or by reason of
any of the obligations, covenants or agreements of Party A contained in this
Confirmation and that any and all personal liability of every such incorporator,
stockholder, agent, affiliate, officer, employee or trustee of Party A for
breaches by Party A of any such obligation, covenant or agreement, which
liability may arise either at common law or at equity, by statute or
constitution, or otherwise, is hereby expressly waived as a condition of and in
consideration for the execution of this Confirmation; provided, however, that
                                                      --------  -------
nothing in this paragraph (d) shall relieve any of the foregoing persons from
any liability which any such person may otherwise have for his/her or its gross
negligence or willful misconduct.

      Party B acknowledges and agrees to the distribution of payments under this
Confirmation from Party A in accordance with the priorities of payments
provisions set forth in Article 3 of the AFE Indenture.

      4.5  Payments.  Notwithstanding anything herein to the contrary, the
           --------
parties agree, with respect to this Confirmation and the Transaction evidenced
hereby, that: (x) all payments required to be made by Party A hereunder shall be
made by 1:00 p.m. (Chicago Time) and all payments required to be made by Party B
hereunder shall be made by 11:00 a.m. (Chicago time); (y) all payments required
to be made by Party B under this Confirmation shall be made to State Street Bank
and Trust Company of Connecticut, National Association, not in its individual
capacity, but solely in its capacity as Trustee under the Owned Aircraft
Indenture securing, and identified in paragraph 2 "Summary of Transaction Terms"
of, this Confirmation (and the parties further agree that the making of any such
payment by Party B shall be deemed to satisfy Party B's obligation to make such
payment to Party A under this Confirmation); and (z) all payments required to be
made by Party A under this Confirmation shall be made in accordance with, and as
provided in, the AFE Indenture.

      4.6  Waiver of Jury Trial.  EACH PARTY HEREBY IRREVOCABLY WAIVES ANY AND
           --------------------
ALL RIGHT TO TRIAL BY JURY IN ANY PROCEEDINGS.

      4.7  Representations and Warranties.  Section 3(a) of the Master
           ------------------------------
Agreement as incorporated in this Confirmation is amended by adding the
following paragraph (vi):

                "(vi) Eligible Swap Participant. It is an "eligible swap
                participant" as that term is defined by the United States
                Commodity Futures Trading Commission in 17 C.F.R. (S) 35.1(b)(2)
                and it has entered into this Confirmation and the Transaction
                evidenced hereby in connection with its line of business
                (including financial intermediation services) or the financing
                of its business; and the material terms of this Confirmation and
                Transaction evidenced hereby have been individually tailored and
                negotiated."

      4.8  No Reliance.  This Confirmation and the Transaction evidenced
           -----------
hereby have been entered into by each party in reliance only upon its judgment,
in order to accomplish legitimate business needs. Neither party holds itself out
as advising, or any of its employees or agents as having any authority to
advise, the other party as to whether or not it should enter into this
Confirmation and the Transaction evidenced hereby. Neither party is receiving
any compensation from the other party for providing advice in respect of this
Confirmation and the Transaction evidenced hereby, and any such advice provided
to such other party will not form the primary basis for an investment decision
by such other party.

      4.9  Consent to Recording.  Each party (i) consents to the recording of
           --------------------
the telephone conversations of trading and marketing personnel of the parties in
connection with this Confirmation and the Transaction evidenced hereby and (ii)
agrees to obtain any necessary consent of, and give notice of such recording to,
such personnel.

                                     -10-
<PAGE>

      4.10  Waiver of Contractual Right of Setoff.  Notwithstanding any
            -------------------------------------
provision of the Master Agreement as incorporated in this Confirmation or any
other existing or future agreement, each party irrevocably waives any and all
contractual rights it may have to set off, net, recoup or otherwise withhold or
suspend or condition payment or performance of any obligation between the two
parties hereunder against any obligations between the two parties under any
other agreements or otherwise.

      4.11  Amendments.  The Master Agreement is hereby further amended as
            ----------
follows:

                 4.11.1    Section 2(b) of the Master Agreement as
                                   incorporated in this Confirmation is hereby
                                   amended by the insertion of the following at
                                   the end thereof after the word "change":
                                   "provided that if such new account shall not
                                   be in the same jurisdiction having the same
                                   power to tax as the original account, the
                                   party not changing its account shall not be
                                   obliged to pay any greater amounts and shall
                                   not receive less as a result of such change
                                   than would have been the case if such change
                                   had not taken place."

                 4.11.2    Section 2(d) of the Master Agreement as
                                   incorporated in this Confirmation is amended
                                   by adding thereto a new final sentence
                                   reading as follows: "Anything in this Section
                                   2(d) to the contrary notwithstanding, Party A
                                   shall not be obligated to make any payment
                                   under this Section 2(d) to Party B".

                 4.11.3    Section 6(b)(iii) of the Master Agreement as
                                   incorporated in this Confirmation is hereby
                                   amended by adding the following at the end
                                   thereof: "which day shall coincide in the
                                   case of an Additional Termination Event
                                   described in Part 1 clause (h) of this
                                   Schedule to the Master Agreement as
                                   incorporated in this Confirmation as follows:
                                   (1) in the case of paragraphs (x) and (y) to
                                   sub-clause (i), on the date the relevant
                                   Lease referred to therein terminates, (2) in
                                   the case of paragraph (z) to sub-clause (i),
                                   on the date of the application of the
                                   proceeds referred to therein, (3) in the case
                                   of paragraphs (x) and (y) to sub-clause (ii),
                                   on the date of the payment or prepayment, as
                                   the case may be, of the United Equipment
                                   Notes referred to therein, and (4) in the
                                   case of paragraph (z) to sub-clause (ii), on
                                   the date of the application of the proceeds
                                   referred to therein".

                 4.11.4    The definition of "Affected Transactions" set forth
                                   in Section 12 of the Master Agreement as
                                   incorporated in this Confirmation is amended
                                   by deleting the existing provision thereof
                                   and substituting the following: '"Affected
                                   Transaction" means the Transaction evidenced
                                   by this Confirmation".

      4.12  Acknowledgment.  Party B hereby acknowledges the assignment by
            --------------
Party A of its rights, but not its obligations, under this Confirmation to the
Indenture Trustee pursuant to the AFE Indenture and expressly agrees that the
Indenture Trustee may exercise the rights of Party A under this Confirmation, to
the same extent as if a party to this Confirmation, on the terms specified in
the AFE Indenture.

      4.13  Obligation of Party A regarding Additional Early Terminations.
            -------------------------------------------------------------
With respect to the Transaction evidenced by this Confirmation, upon the
occurrence of an event resulting in an Additional Early Termination with respect
to the Owned Aircraft securing the Transaction evidenced by this Confirmation,
the Indenture Trustee on behalf of Party A shall engage the Investment Banking
Firm and shall instruct the Investment Banking Firm to use commercially
reasonable efforts to promptly procure a Senior Qualified Substitute and/or a
Junior Qualified Substitute, but only to the extent that the Qualified
Substitute Purchase Amounts are less than or equal to the Senior Swap
Termination Amount and/or the Junior Swap Termination Amount, as applicable. In
no event shall Party A be obligated to pay any fees or other amounts arising in
connection with procuring Qualified Substitutes to the Investment Banking Firm
if the Investment Banking Firm fails to so procure Qualified Substitutes in
accordance with the preceding sentence.

                                     -11-
<PAGE>

      4.14  Substitution of Aircraft Collateral.  In the event that Party B
            -----------------------------------
elects to prepay the United Equipment Notes issued under the Owned Aircraft
Indenture securing, and identified in paragraph 2 "Summary of Transaction Terms"
of, this Confirmation, Party B may, prior to such prepayment, and in lieu of
making a termination payment as provided in Section 6(e) of the Master Agreement
as incorporated in this Confirmation, elect to secure its obligations under this
Confirmation and the Transaction evidenced hereby by granting to the Indenture
Trustee, on behalf of Party A, a security interest on and mortgage over an
aircraft owned by Party B, of a value and subject to such encumbrances as may be
acceptable to the Rating Agencies,  pursuant to a mortgage containing covenants,
terms, priority of payment provisions (to the extent other encumbrances exist in
respect of such aircraft) and conditions substantially similar to the Owned
Aircraft Indenture, and in any event acceptable to the Rating Agencies, and in
connection therewith, and as a condition to the effectiveness of any such
election,  Party B shall have obtained a Ratings Confirmation.

      4.15  Supplemental Payment.  With respect to this Confirmation and the
            --------------------
Transaction evidenced hereby, in addition to any other amounts payable under
this Confirmation, Party B shall pay to Party A on or before January 2, 2001,
the Supplemental Payment Amount determined in accordance with the following
formula, which amount may not be netted against any amount due and owing from
Party A to Party B:

      Supplemental Payment Amount = (Supplemental Payment Period x 7.9625%  per
      annum x Supplemental Payment Notional Balance) / 360.

      Where:

              "Supplemental Payment Period" means the actual number of days from
      and including July 31, 2000 to, but excluding, the date of the payment of
      the Supplemental Payment Amount.

              "Supplemental Payment Notional Balance" means $43,160.94.

      (p)     Survival of Obligations. The "Survival of Obligations" provision
              -----------------------
of Section 8(c) of the Master Agreement as incorporated in this Confirmation
will not apply.

                                     -12-
<PAGE>

                                                                      Appendix I
                                                                      ----------

                           Principal Notional Amount
                           -------------------------

The Principal Notional Amount as of any Periodic Swap Payment Date for each of
the Series A-1 AFE Trust Notes, the Series A-2 AFE Trust Notes, the Series B AFE
Trust Notes and the Certificates is the product of the amount set forth below
opposite such date for such instrument and ___% (the "Allocation Percentage"):

<TABLE>
<CAPTION>
--------------------------------------------------------------------------------------------------
Periodic Swap      Series A-1 AFE        Series A-2 AFE      Series B AFE
-------------      --------------        --------------      ------------
Payment Date(1)    Trust Notes(2)(3)   Trust Notes(2)(3)   Trust Notes(2)(3)  Certificates(2)(3)
------------       -----------         -----------------   -----------------  ------------
--------------------------------------------------------------------------------------------------
<S>                <C>                 <C>                 <C>                <C>
--------------------------------------------------------------------------------------------------
</TABLE>

(5)   Subject to Modified Following Business Day Convention

(6)   Computed as of the Effective Date on the basis of the scheduled aggregate
      outstanding principal amounts of the Series A-1, Series A-2 and Series B
      AFE Trust Notes and the aggregate scheduled pool balance of the
      Certificates, in each instance, as of the relevant Periodic Swap Payment
      Date, except that if as of any date of determination thereof, any of the
      amounts shown above for such date are less than the corresponding actual
      outstanding amount of the related Series of AFE Trust Notes or
      Certificates, as the case may be, as of such date, the Principal Notional
      Amount of the affected Series of AFE Trust Notes or Certificates, as the
      case may be, for such date shall be such actual outstanding amount
      thereof.

(7)   In the event the Leased Equipment Notes in respect of any Leased Aircraft
      are prepaid as a result of the termination of the released Lease, the
      Principal Notional Amounts set forth above shall be reduced by the
      redemption amounts for such Leased Aircraft as set forth in Exhibit A to
      this Appendix I.

                                     -13-
<PAGE>

                                                                       Exhibit A

       For each of Leased Aircraft N_______, _______, _______ and _______

<TABLE>
<CAPTION>
-------------------------------------------------------------------------------------------
Periodic Swap      Series A-1 AFE    Series A-2 AFE     Series B AFE
Payment Date(1)     Trust Notes       Trust Notes       Trust Notes     Certificates
------------        -----------       -----------       -----------     ------------
-------------------------------------------------------------------------------------------
<S>                <C>             <C>             <C>                 <C>
-------------------------------------------------------------------------------------------
</TABLE>

                                     -14-
<PAGE>

                 For each of Leased Aircraft N_____ and N______

<TABLE>
<CAPTION>
-----------------------------------------------------------------------------------------
Periodic Swap    Series A-1 AFE     Series A-2 AFE      Series B AFE
Payment Date      Trust Notes        Trust Notes        Trust Notes     Certificates
------------      -----------        -----------        -----------     ------------
-----------------------------------------------------------------------------------------
<S>             <C>             <C>               <C>                  <C>
-----------------------------------------------------------------------------------------
</TABLE>

                                     -15-
<PAGE>

                                                                     Appendix II
                                                                     -----------

The Senior Swap Termination Amount, Junior Swap Termination Amount and Swap
Termination as of any Periodic Swap Payment Date equals the product of the
amount set forth below opposite such date and the Allocation Percentage, as
follows:

<TABLE>
<CAPTION>
-------------------------------------------------------------------------------------------
Periodic Swap            Senior Swap               Junior Swap           Swap Termination
Payment Date(1)    Termination Amount(2)(3)   Termination Amount(2)(3)     Amount(2)(3)
------------       ------------------         ------------------           -------
-------------------------------------------------------------------------------------------
<S>                <C>                        <C>                        <C>
-------------------------------------------------------------------------------------------
</TABLE>

(1)   Subject to Modified Following Business Day Convention

(2)   Computed as of the Effective Date on the basis of the scheduled
      outstanding principal amount of the Series A-1, Series A-2 and Series B
      AFE Trust Notes plus the pool balance of the Certificates, except that if
      as of any date of determination thereof, the actual amount of such
      aggregate outstanding principal amount plus pool balance exceeds the
      scheduled amounts therefor as set forth in Appendix I to this Schedule,
      the Senior Swap Termination Amount and/or Junior Swap Termination Amount
      as of such date of determination shall be the respective amount thereof as
      shown therefor as of the preceding Periodic Swap Payment Date or Effective
      Date as the case may be.

(3)   In the event the Leased Equipment Notes in respect of any Leased Aircraft
      are prepaid as a result of the termination of the related lease, the
      Senior Swap Termination Amounts and Junior Swap Termination Amounts set
      forth above shall be reduced by the reduction amounts for such Leased
      Aircraft as set forth in Exhibit A to this Appendix II.

                                     -16-
<PAGE>

                                                                       Exhibit A

        For each of Leased Aircraft N______, ______, ______ and ________

<TABLE>
<CAPTION>
--------------------------------------------------------------------------------------------
Periodic Swap            Senior Swap               Junior Swap           Swap Termination
Payment Date(1)    Termination Amount(2)(3)  Termination Amount(2)(3)      Amount(2)(3)
------------       ------------------        ------------------            ------
--------------------------------------------------------------------------------------------
<S>                <C>                       <C>                         <C>
--------------------------------------------------------------------------------------------
</TABLE>

                                     -17-
<PAGE>

                 For each of Leased Aircraft N____, and N_____

<TABLE>
<CAPTION>
-------------------------------------------------------------------------------------------------
Periodic Swap             Senior Swap                 Junior Swap            Swap Termination
Payment Date(1)     Termination Amount(2)(3)    Termination Amount(2)(3)       Amount(2)(3)
------------        ------------------          ------------------             ------
-------------------------------------------------------------------------------------------------
<S>                 <C>                         <C>                          <C>
-------------------------------------------------------------------------------------------------
</TABLE>

                                     -18-

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