Document:

<PAGE>   1
                                                                     EXHIBIT 4.9

                                                                       EXECUTION

                             INTERCREDITOR AGREEMENT
                                    (2000-1)

                                   Dated as of
                                  July 7, 2000

                                      AMONG

                            WILMINGTON TRUST COMPANY,
                         not in its individual capacity
                         but solely as Trustee under the
                America West Airlines Pass Through Trust 2000-1G
                                       and
                America West Airlines Pass Through Trust 2000-1C

                                 CITIBANK, N.A.
                          as Class G Liquidity Provider
                                       and
                          as Class C Liquidity Provider

                           AMBAC ASSURANCE CORPORATION
                               as Policy Provider

                                       AND

                            WILMINGTON TRUST COMPANY,
                      not in its individual capacity except
                        as expressly set forth herein but
                    solely as Subordination Agent and Trustee

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                                TABLE OF CONTENTS

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<S>                                                                                                                  <C>
ARTICLE I  DEFINITIONS...........................................................................................     2

   SECTION 1.1.  DEFINITIONS.....................................................................................     2

ARTICLE II  TRUST ACCOUNTS; CONTROLLING PARTY....................................................................    23

   SECTION 2.1.  AGREEMENT TO TERMS OF SUBORDINATION; PAYMENTS FROM MONIES RECEIVED ONLY.........................    23
   SECTION 2.2.  TRUST ACCOUNTS..................................................................................    23
   SECTION 2.3.  DEPOSITS TO THE COLLECTION ACCOUNT AND SPECIAL PAYMENTS ACCOUNT.................................    25
   SECTION 2.4.    DISTRIBUTIONS OF SPECIAL PAYMENTS.............................................................    25
   SECTION 2.5.  DESIGNATED REPRESENTATIVES......................................................................    28
   SECTION 2.6.  CONTROLLING PARTY...............................................................................    29

ARTICLE III  RECEIPT, DISTRIBUTION AND APPLICATION OF AMOUNTS RECEIVED...........................................    31

   SECTION 3.1.  WRITTEN NOTICE OF DISTRIBUTION..................................................................    31
   SECTION 3.2.  DISTRIBUTION OF AMOUNTS ON DEPOSIT IN THE COLLECTION ACCOUNT....................................    33
   SECTION 3.3.  DISTRIBUTION OF AMOUNTS ON DEPOSIT FOLLOWING A TRIGGERING EVENT.................................    35
   SECTION 3.4.  OTHER PAYMENTS..................................................................................    37
   SECTION 3.5.  PAYMENTS TO THE TRUSTEES, LIQUIDITY PROVIDERS AND POLICY PROVIDER...............................    38
   SECTION 3.6.  LIQUIDITY FACILITIES............................................................................    38
   SECTION 3.7.  THE POLICY......................................................................................    44

ARTICLE IV  EXERCISE OF REMEDIES.................................................................................    48

   SECTION 4.1.  DIRECTIONS FROM THE CONTROLLING PARTY...........................................................    48
   SECTION 4.2.  REMEDIES CUMULATIVE.............................................................................    49
   SECTION 4.3.  DISCONTINUANCE OF PROCEEDINGS...................................................................    49
   SECTION 4.4.  RIGHT OF CERTIFICATEHOLDERS TO RECEIVE PAYMENTS NOT TO BE IMPAIRED..............................    49
   SECTION 4.5.  UNDERTAKING FOR COSTS...........................................................................    50

ARTICLE V  DUTIES OF THE SUBORDINATION AGENT; AGREEMENTS OF TRUSTEES, ETC........................................    50

   SECTION 5.1.  NOTICE OF INDENTURE DEFAULT OR TRIGGERING EVENT.................................................    50
   SECTION 5.2.  INDEMNIFICATION.................................................................................    50
   SECTION 5.3.  NO DUTIES EXCEPT AS SPECIFIED IN INTERCREDITOR AGREEMENT........................................    51
   SECTION 5.4.  NOTICE FROM THE LIQUIDITY PROVIDERS, AND TRUSTEES...............................................    51

ARTICLE VI  THE SUBORDINATION AGENT..............................................................................    52

   SECTION 6.1.  AUTHORIZATION; ACCEPTANCE OF TRUSTS AND DUTIES..................................................    52
   SECTION 6.2.  ABSENCE OF DUTIES...............................................................................    52
   SECTION 6.3.  NO REPRESENTATIONS OR WARRANTIES AS TO DOCUMENTS................................................    52
   SECTION 6.4.  NO SEGREGATION OF MONIES; NO INTEREST...........................................................    52
   SECTION 6.5.  RELIANCE; AGENTS; ADVICE OF COUNSEL.............................................................    53
   SECTION 6.6.  CAPACITY IN WHICH ACTING........................................................................    53
   SECTION 6.7.  COMPENSATION....................................................................................    53
   SECTION 6.8.  MAY BECOME CERTIFICATEHOLDER....................................................................    53
   SECTION 6.9.  SUBORDINATION AGENT REQUIRED; ELIGIBILITY.......................................................    54
   SECTION 6.10.  MONEY TO BE HELD IN TRUST......................................................................    54

ARTICLE VII  INDEMNIFICATION OF SUBORDINATION AGENT..............................................................    54

   SECTION 7.1.  SCOPE OF INDEMNIFICATION........................................................................    54

ARTICLE VIII  SUCCESSOR SUBORDINATION AGENT......................................................................    54

   SECTION 8.1.  REPLACEMENT OF SUBORDINATION AGENT; APPOINTMENT OF SUCCESSOR....................................    54

ARTICLE IX  SUPPLEMENTS AND AMENDMENTS...........................................................................    55
</TABLE>

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<TABLE>
<S>                                                                                                                  <C>
   SECTION 9.1.  AMENDMENTS, WAIVERS, ETC........................................................................    56
   SECTION 9.2.  SUBORDINATION AGENT PROTECTED...................................................................    58
   SECTION 9.3.  EFFECT OF SUPPLEMENTAL AGREEMENTS...............................................................    58
   SECTION 9.4.  NOTICE TO RATING AGENCIES.......................................................................    58

ARTICLE X  MISCELLANEOUS.........................................................................................    58

   SECTION 10.1.  TERMINATION OF INTERCREDITOR AGREEMENT.........................................................    58
   SECTION 10.2.  INTERCREDITOR AGREEMENT FOR BENEFIT OF TRUSTEES, LIQUIDITY PROVIDERS, THE POLICY PROVIDER AND
   SUBORDINATION AGENT...........................................................................................    58
   SECTION 10.3.  NOTICES........................................................................................    59
   SECTION 10.4.  SEVERABILITY...................................................................................    60
   SECTION 10.5.  NO ORAL MODIFICATIONS OR CONTINUING WAIVERS....................................................    60
   SECTION 10.6.  SUCCESSORS AND ASSIGNS.........................................................................    60
   SECTION 10.7.  HEADINGS.......................................................................................    61
   SECTION 10.8.  COUNTERPART FORM...............................................................................    61
   SECTION 10.9.  SUBORDINATION..................................................................................    61
   SECTION 10.10.  GOVERNING LAW.................................................................................    62
   SECTION 10.11.  SUBMISSION TO JURISDICTION; WAIVER OF JURY TRIAL; WAIVER OF IMMUNITY..........................    62
</TABLE>

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<PAGE>   4

                             INTERCREDITOR AGREEMENT

                  INTERCREDITOR AGREEMENT dated as of July 7, 2000, among
WILMINGTON TRUST COMPANY, a Delaware banking corporation ("WTC"), not in its
individual capacity but solely as Trustee of each Trust (each as defined below);
CITIBANK, N.A., a national banking association ("Citibank"), as Class G
Liquidity Provider and Class C Liquidity Provider; AMBAC ASSURANCE CORPORATION,
a Wisconsin domiciled stock insurance company, as Policy Provider; and
WILMINGTON TRUST COMPANY, not in its individual capacity except as expressly set
forth herein, but solely as Subordination Agent and trustee hereunder (in such
capacity, together with any successor appointed pursuant to Article VIII hereof,
the "Subordination Agent").

                  WHEREAS, all capitalized terms used herein shall have the
respective meanings referred to in Article I hereof;

                  WHEREAS, pursuant to each Indenture (i) in the case of each
Aircraft that is owned by America West at the time such Indenture is entered
into (the "Owned Aircraft"), America West will issue on a recourse basis two (or
three, under certain circumstances) series of Equipment Notes to finance the
purchase of such Aircraft, and (ii) in the case of each Aircraft that is leased
to America West pursuant to a related Lease at the time such Indenture is
entered into (the "Leased Aircraft"), the related Owner Trustee will issue on a
nonrecourse basis two (or three, under certain circumstances) series of
Equipment Notes to finance the purchase of such Aircraft;

                  WHEREAS, pursuant to the Financing Agreements, each Trust will
acquire Equipment Notes having an interest rate equal to the interest rate
applicable to the Certificates to be issued by such Trust;

                  WHEREAS, pursuant to each Trust Agreement, the Trust created
thereby proposes to issue a single class of Certificates (a "Class") bearing the
interest rate and having the final distribution date described in such Trust
Agreement on the terms and subject to the conditions set forth therein;

                  WHEREAS, pursuant to the Purchase Agreement, the Initial
Purchasers propose to purchase the Certificates issued by each Trust in the
aggregate face amount set forth opposite the name of such Trust on Schedule I
thereto on the terms and subject to the conditions set forth therein;

                  WHEREAS, the Liquidity Provider proposes to enter into two
separate revolving credit agreements (each such agreement, a "Liquidity
Facility") with the Subordination Agent, as agent for the Trustee of each Trust,
respectively, for the benefit of the Certificateholders of such Trust;

                  WHEREAS, the Policy Provider proposes to enter into the Policy
Provider Agreement providing for the issuance by the Policy Provider of the
Policy for the benefit of the Class G Trustee and Class G Certificateholders;
and

<PAGE>   5

                  WHEREAS, it is a condition precedent to the obligations of the
Initial Purchasers under the Purchase Agreement that the Subordination Agent,
the Trustees, the Liquidity Provider and the Policy Provider agree to the terms
of subordination set forth in this Agreement in respect of each Class of
Certificates, and the Subordination Agent, the Trustees, the Liquidity Provider
and the Policy Provider, by entering into this Agreement, hereby acknowledge and
agree to such terms of subordination and the other provisions of this Agreement.

                  NOW, THEREFORE, in consideration of the mutual agreements
herein contained, and of other good and valuable consideration, the receipt and
adequacy of which are hereby acknowledged, the parties hereto agree as follows:

                                    ARTICLE I

                                   DEFINITIONS

                  SECTION 1.1. Definitions. For all purposes of this Agreement,
except as otherwise expressly provided or unless the context otherwise requires:

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

                  (2) all references in this Agreement to designated "Articles",
         "Sections" and other subdivisions are to the designated Articles,
         Sections and other subdivisions of this Agreement;

                  (3) 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

                  (4) the term "including" shall mean "including without
limitation".

                  "Acceleration" means, with respect to the amounts payable in
respect of the Equipment Notes issued under any Indenture, such amounts becoming
immediately due and payable by declaration or otherwise. "Accelerate",
"Accelerated" and "Accelerating" have meanings correlative to the foregoing.

                  "Accrued Class G Interest" has the meaning specified in
Section 3.7(a).

                  "Adjusted Expected Distributions" means, with respect to the
Certificates of any Trust on any Current Distribution Date, the sum of (x)
accrued and unpaid interest on such Certificates (excluding interest, if any,
payable with respect to the Deposits related to such Trust) and (y) the greater
of:

                  (A) the difference between (x) the Pool Balance of such
         Certificates as of the immediately preceding Distribution Date (or, if
         the Current Distribution Date is the first Distribution Date, the
         original aggregate face amount of the Certificates of such Trust) and
         (y) the Pool Balance of such Certificates as of the Current
         Distribution Date

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<PAGE>   6

         calculated on the basis that (i) the principal of the Non-Performing
         Equipment Notes held in such Trust has been paid in full and such
         payments have been distributed to the holders of such Certificates,
         (ii) the principal of the Performing Equipment Notes held in such Trust
         has been paid when due (but without giving effect to any Acceleration
         of Performing Equipment Notes) and such payments have been distributed
         to the holders of such Certificates and (iii) the principal of any
         Equipment Notes formerly held in such Trust that have been sold
         pursuant to the terms hereof has been paid in full and such payments
         have been distributed to the holders of such Certificates, but without
         giving effect to any reduction in the Pool Balance as a result of any
         distribution attributable to Deposits occurring after the immediately
         preceding Distribution Date (or, if the Current Distribution Date is
         the first Distribution Date, occurring after the initial issuance of
         the Certificates of such Trust), and

                  (B) the amount of the excess, if any, of (i) the Pool Balance
         of such Class of Certificates as of the immediately preceding
         Distribution Date (or, if the Current Distribution Date is the first
         Distribution Date, the original aggregate face amount of the
         Certificates of such Trust), less the amount of the Deposits for such
         Class of Certificates as of such preceding Distribution Date (or, if
         the Current Distribution Date is the first Distribution Date, the
         original aggregate amount of the Deposits for such Class of
         Certificates) other than any portion of such Deposits thereafter used
         to acquire Equipment Notes pursuant to the Note Purchase Agreement,
         over (ii) the Aggregate LTV Collateral Amount for such Class of
         Certificates for the Current Distribution Date;

provided that, until the date of the initial LTV Appraisals, clause (B) shall
not apply.

                  For purposes of calculating Adjusted Expected Distributions
with respect to the Certificates of any Trust, any premium paid on the Equipment
Notes held in such Trust that has not been distributed to the Certificateholders
of such Trust (other than such premium or a portion thereof applied to the
payment of interest on the Certificates of such Trust or the reduction of the
Pool Balance of such Trust) shall be added to the amount of Adjusted Expected
Distributions.

                  "Advance", with respect to any Liquidity Facility, means any
Advances as defined in such Liquidity Facility.

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

                  "Aggregate LTV Collateral Amount" for any Class of
Certificates for any Distribution Date means the sum of the applicable LTV
Collateral Amounts for each Leased Aircraft and Owned Aircraft, minus the Pool
Balance for each Class of Certificates, if any, senior to such Class, after
giving effect to any distribution of principal on such Distribution Date with
respect to such senior Class or Classes.

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<PAGE>   7

                  "Aircraft" means, with respect to each Indenture, the
"Aircraft" referred to therein.

                  "America West" means America West Airlines, Inc., a Delaware
corporation, and its successors and assigns.

                  "America West Bankruptcy Event" means the occurrence and
continuation of any of the following:

                  (a) America West shall consent to the appointment of or the
         taking of possession by a receiver, trustee or liquidator of itself or
         of substantially all of its property, or America West shall admit in
         writing its inability to pay its debts generally as they come due, or
         shall make a general assignment for the benefit of creditors, or
         America West shall file a voluntary petition in bankruptcy or a
         voluntary petition or an answer seeking reorganization, liquidation or
         other relief in a case under any bankruptcy laws or other insolvency
         laws (as in effect at such time) or an answer admitting the material
         allegations of a petition filed against America West in any such case,
         or America West shall seek relief by voluntary petition, answer or
         consent, under the provisions of any other bankruptcy or other similar
         law providing for the reorganization or winding-up of corporations (as
         in effect at such time) or America West shall seek an agreement,
         composition, extension or adjustment with its creditors under such
         laws, or America West's board of directors shall adopt a resolution
         authorizing corporate action in furtherance of any of the foregoing; or

                  (b) an order, judgment or decree shall be entered by any court
         of competent jurisdiction appointing, without the consent of America
         West, a receiver, trustee or liquidator of America West or of
         substantially all of its property, or substantially all of the property
         of America West shall be sequestered, or granting any other relief in
         respect of America West as a debtor under any bankruptcy laws or other
         insolvency laws (as in effect at such time), and any such order,
         judgment or decree of appointment or sequestration shall remain in
         force undismissed, unstayed and unvacated for a period of 90 days after
         the date of entry thereof; or

                  (c) a petition against America West in a case under any
         bankruptcy laws or other insolvency laws (as in effect at such time) is
         filed and not withdrawn or dismissed within 90 days thereafter, or if,
         under the provisions of any law providing for reorganization or
         winding-up of corporations which may apply to America West, any court
         of competent jurisdiction assumes jurisdiction, custody or control of
         America West or of any substantial part of its property and such
         jurisdiction, custody or control remains in force unrelinquished,
         unstayed and unterminated for a period of 90 days.

                  "America West Provisions" has the meaning specified in Section
9.1(a).

                  "Appraisal" means a fair market value appraisal (which may be
a "desktop" appraisal) performed by any Appraiser or any other nationally
recognized aircraft appraiser on the basis of an arm's-length transaction
between an informed and willing purchaser under no

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<PAGE>   8

compulsion to buy and an informed and willing seller under no compulsion to sell
and both having knowledge of all relevant facts.

                  "Appraised Current Market Value" of any Leased Aircraft or
Owned Aircraft means the lower of the average and the median of the three most
recent Appraisals of such Aircraft.

                  "Appraisers" means Aircraft Information Services, Inc.,
AvSolutions, Inc., and Morten Beyer and Agnew, Inc.

                  "Assignment and Assumption Agreements" means each of the
Assignment and Assumption Agreements to be executed among a Trustee and trustee
of the relevant Successor Trust in accordance with the relevant Trust Agreement,
as the same may be amended, modified or supplemented from time to time.

                  "Available Amount" means, with respect to any Liquidity
Facility on any drawing date, an amount equal to (a) the Stated Amount of such
Liquidity Facility at such time, less (b) the aggregate amount of each Interest
Drawing honored by the Liquidity Provider under such Liquidity Facility on or
prior to such date which has not been reimbursed or reinstated as provided in
Section 3.6(g) hereof as of such date; provided that, following a Downgrade
Drawing, a Non-Extension Drawing or a Final Drawing under such Liquidity
Facility, the Available Amount of such Liquidity Facility shall be zero.

                  "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
Phoenix, Arizona, New York, New York, or, so long as any Certificate is
outstanding, the city and state in which any Trustee, the Subordination Agent or
any Loan Trustee maintains its Corporate Trust Office or receives and disburses
funds, and that, solely with respect to draws under any Liquidity Facility, also
is a "Business Day" as defined in such Liquidity Facility.

                  "Cash Collateral Account" means the Class G Cash Collateral
Account or the Class C Cash Collateral Account, as applicable.

                  "Certificate" means a Class G Certificate or a Class C
Certificate, as applicable.

                  "Certificateholder" means any holder of one or more
Certificates.

                  "Class" has the meaning assigned to such term in the
preliminary statements to this Agreement.

                  "Class C Cash Collateral Account" means an Eligible Deposit
Account in the name of the Subordination Agent maintained at an Eligible
Institution, which shall be the Subordination Agent if it shall so qualify, into
which all amounts drawn under the Class C Liquidity Facility pursuant to Section
3.6(c), 3.6(d) or 3.6(i) shall be deposited.

                  "Class C Certificateholder" means, at any time, any holder of
one or more Class C Certificates.

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<PAGE>   9

                  "Class C Certificates" means the certificates issued by the
Class C Trust, substantially in the form of Exhibit A to the Class C Trust
Agreement, and authenticated by the Class C Trustee, representing fractional
undivided interests in the Class C Trust, and any certificates issued in
exchange therefor or replacement thereof pursuant to the terms of the Class C
Trust Agreement and/or the Registration Rights Agreement (including, without
limitation, any Exchange Certificates (as defined in the Class C Trust
Agreement).

                  "Class C Liquidity Facility" means, initially, the Revolving
Credit Agreement dated as of the date hereof, between the Subordination Agent,
as agent and trustee for the Class C Trustee, and the initial Class C Liquidity
Provider, and, from and after the replacement of such Agreement pursuant hereto,
the Replacement Liquidity Facility therefor, if any, in each case as amended,
supplemented or otherwise modified from time to time in accordance with its
terms.

                  "Class C Liquidity Provider" means Citibank, together with any
Replacement Liquidity Provider which has issued a Replacement Liquidity Facility
to replace any Class C Liquidity Facility pursuant to Section 3.6(e).

                  "Class C Trust" means (i) prior to the Transfer, the America
West Airlines Pass Through Trust 2000-1C-O created and administered pursuant to
the Class C Trust Agreement and (ii) after the Transfer, the America West
Airlines Pass Through Trust 2000-1C-S created and administered pursuant to the
Class C Trust Agreement.

                  "Class C Trust Agreement" means (i) prior to the Transfer, the
Pass Through Trust Agreement, dated as of the date hereof, between America West
and the Class C Trustee, governing the creation and administration of the
America West Airlines Pass Through Trust 2000-1C-O and the issuance of the Class
C Certificates, as the same may be amended, supplemented or otherwise modified
from time to time in accordance with its terms, and (ii) after the Transfer, the
Pass Through Trust Agreement entered into between America West and the Class C
Trustee, governing the creation and administration of the America West Airlines
Pass Through Trust 2000-1C-S and the issuance of the Class C Certificates, as
the same may be amended, supplemented or otherwise modified from time to time in
accordance with its terms.

                  "Class C Trustee" means WTC, not in its individual capacity
except as expressly set forth in the Class C Trust Agreement, but solely as
trustee under the Class C Trust Agreement, together with any successor trustee
appointed pursuant thereto.

                  "Class D Certificates" means any pass through certificates
issued by the Class D Trust representing fractional undivided interests in the
Class D Trust.

                  "Class D Trust" means the America West Airlines Pass Through
Trust 2000-1D, if and when established.

                  "Class G Cash Collateral Account" means an Eligible Deposit
Account in the name of the Subordination Agent maintained at an Eligible
Institution, which shall be the Subordination Agent if it shall so qualify, into
which all amounts drawn under the Class G Liquidity Facility pursuant to Section
3.6(c), 3.6(d) or 3.6(i) shall be deposited.

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<PAGE>   10

                  "Class G Certificateholder" means, at any time, any holder of
one or more Class G Certificates.

                  "Class G Certificates" means the certificates issued by the
Class G Trust, substantially in the form of Exhibit A to the Class G Trust
Agreement, and authenticated by the Class G Trustee, representing fractional
undivided interests in the Class G Trust, and any certificates issued in
exchange therefor or replacement thereof pursuant to the terms of the Class G
Trust Agreement and/or the Registration Rights Agreement (including, without
limitation, any Exchange Certificates (as defined in the Class G Trust
Agreement).

                  "Class G Deposits" means the Deposits with respect to the
Class G Certificates.

                  "Class G Liquidity Facility" means, initially, the Revolving
Credit Agreement dated as of the date hereof, between the Subordination Agent,
as agent and trustee for the Class G Trustee, and the initial Class G Liquidity
Provider, and, from and after the replacement of such Agreement pursuant hereto,
the Replacement Liquidity Facility therefor, if any, in each case as amended,
supplemented or otherwise modified from time to time in accordance with its
terms.

                  "Class G Liquidity Provider" means Citibank, together with any
Replacement Liquidity Provider which has issued a Replacement Liquidity Facility
to replace any Class G Liquidity Facility pursuant to Section 3.6(e).

                  "Class G Paying Agent Account" means the Paying Agent Account
as defined in the Escrow and Paying Agent Agreement relating to the Class G
Certificates.

                  "Class G Trust" means (i) prior to the Transfer, the America
West Airlines Pass Through Trust 2000-1G-O created and administered pursuant to
the Class G Trust Agreement and (ii) after the Transfer, the America West
Airlines Pass Through Trust 2000-1G-S created and administered pursuant to the
Class G Trust Agreement.

                  "Class G Trust Agreement" means (i) prior to the Transfer, the
Pass Through Trust Agreement, dated as of the date hereof, between America West
and the Class G Trustee, governing the creation and administration of the
America West Airlines Pass Through Trust 2000-1G-O and the issuance of the Class
G Certificates, as the same may be amended, supplemented or otherwise modified
from time to time in accordance with its terms, and (ii) after the Transfer, the
Pass Through Trust Agreement entered into between America West and the Class G
Trustee, governing the creation and administration of the America West Airlines
Pass Through Trust 2000-1G-S and the issuance of the Class G Certificates, as
the same may be amended, supplemented or otherwise modified from time to time in
accordance with its terms.

                  "Class G Trustee" means WTC, not in its individual capacity
except as expressly set forth in the Class G Trust Agreement, but solely as
trustee under the Class G Trust Agreement, together with any successor trustee
appointed pursuant thereto.

                  "Closing Date" means July 7, 2000.

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<PAGE>   11

                  "Code" means the Internal Revenue Code of 1986, as amended
from time to time, and the Treasury Regulations promulgated thereunder.

                  "Collateral" has the meaning assigned to such term in the
Owned Aircraft Indentures.

                  "Collection Account" means the Eligible Deposit Account
established by the Subordination Agent pursuant to Section 2.2 which the
Subordination Agent shall make deposits in and withdrawals from in accordance
with this Agreement.

                  "Controlling Party" means the Person entitled to act as such
pursuant to the terms of Section 2.6.

                  "Corporate Trust Office" means, with respect to any Trustee,
the Subordination Agent or any Loan Trustee, the office of such Person in the
city at which, at any particular time, its corporate trust business shall be
principally administered.

                  "Current Distribution Date" means a Distribution Date
specified as a reference date for calculating the Expected Distributions or the
Adjusted Expected Distributions with respect to the Certificates of any Trust as
of such Distribution Date.

                  "Delivery Period Expiry Date" means the earlier of (a) June
30, 2001, or, if the Equipment Notes relating to all the New Aircraft (or
Substitute Aircraft in lieu thereof) have not been purchased by the Trusts on or
prior to such date due to any reason beyond the control of America West and not
occasioned by America West's fault or negligence, September 30, 2001 and (b) the
date on which Equipment Notes with respect to all New Aircraft (or Substitute
Aircraft in lieu thereof) have been purchased by the Trusts in accordance with
the Note Purchase Agreement.

                  "Deposit Agreement" shall mean, with respect to any Class, the
Deposit Agreement pertaining to such Class dated as of the date hereof between
the Escrow Agent, and the Depositary, as the same may be amended, modified or
supplemented from time to time in accordance with the terms thereof.

                  "Depositary" means Citibank, as depositary under each Deposit
Agreement, or its successors and assigns.

                  "Deposits" with respect to any Class, shall have the meaning
set forth in the Deposit Agreement pertaining to such Class.

                  "Designated Representatives" means the Subordination Agent
Representatives, the Trustee Representatives and the Provider Representatives
identified under Section 2.5.

                  "Disposition" has the meaning assigned to such term in Section
3.7(c).

                  "Distribution Date" means a Regular Distribution Date or a
Special Distribution Date.

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                  "Dollars" or "$" means United States dollars.

                  "Downgrade Drawing" has the meaning assigned to such term in
Section 3.6(c).

                  "Downgraded Facility" has the meaning assigned to such term in
Section 3.6(c).

                  "Drawing" means an Interest Drawing, a Final Drawing, a
Non-Extension Drawing or a Downgrade Drawing, as the case may be.

                  "EBO Date" shall mean the date set forth on Schedule 1 to the
Lease as the "EBO Date".

                  "Election Distribution Date" has the meaning assigned to such
term in Section 3.7(c).

                  "Eligible Deposit Account" means either (a) a segregated
account with an Eligible Institution or (b) a segregated trust account with the
corporate trust department of 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), having corporate trust
powers and acting as trustee for funds deposited in such account, so long as any
of the securities of such depository institution has a long-term unsecured debt
rating from each Rating Agency of at least A2 or its equivalent. An Eligible
Deposit Account may be maintained with a Liquidity Provider so long as such
Liquidity Provider is an Eligible Institution; provided that such Liquidity
Provider shall have waived all rights of set-off and counterclaim with respect
to such account.

                  "Eligible Institution" means (a) the corporate trust
department of the Subordination Agent or any 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 each Rating
Agency of at least A2 or its equivalent.

                  "Eligible Investments" 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 P-1 and A-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 short-term unsecured debt ratings of at least P-1 by Moody's
and A-1 by Standard & Poor's, having maturities no later than 90 days following
the date of such investment; provided, however, that (x) all Eligible
Investments that are bank obligations shall be denominated in U.S. dollars; and
(y) the aggregate amount of Eligible 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 surplus;

                                       9
<PAGE>   13

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, and (2) all such
investments set forth in clause (a), (b) or (c) above mature no later than the
Business Day immediately preceding the next Regular Distribution Date; provided
further, however, that in the case of any Eligible 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. Notwithstanding the
foregoing, no investment of the types described in clause (b) above which is
issued or guaranteed by America West or any of its Affiliates, and no investment
in the obligations of any one bank in excess of $10,000,000, shall be an
Eligible Investment unless written approval has been obtained from the Policy
Provider and a Ratings Confirmation shall have been received with respect to the
making of such investment.

                  "Equipment Notes" means, at any time, the Series G Equipment
Notes and the Series C Equipment Notes, collectively, and in each case, any
Equipment Notes issued in exchange therefor or replacement thereof pursuant to
the terms of the Indentures.

                  "Escrow Agent" means WTC, as escrow agent under each Escrow
and Paying Agent Agreement, together with its successors in such capacity.

                  "Escrow and Paying Agent Agreement" shall mean, with respect
to any Class, the Escrow and Paying Agent Agreement pertaining to such Class
dated as of the date hereof between the Escrow Agent, the Initial Purchasers,
the Trustee for such Class and the Paying Agent, as the same may be amended,
modified or supplemented from time to time in accordance with the terms thereof.

                  "Escrow Receipts" has the meaning assigned to such term in the
Escrow and Paying Agent Agreement for the Class G Trust.

                  "Excess Interest Policy Drawing" has the meaning assigned to
such term in Section 3.7(c).

                  "Excess Reimbursement Obligations" means, (a) in the event of
any Policy Provider Election, the portion of the Policy Provider Obligations
that represents, when added to that portion of any Liquidity Obligations that
represents, interest on the Series G Equipment Note in respect of which the
Policy Provider Election has been made in excess of 24 months of interest at the
interest rate applicable to such Equipment Note and (b) any interest on the
Liquidity Obligations in respect of the Class G Liquidity Facility and Class C
Liquidity Facility paid by the Policy Provider to the Liquidity Provider from
and after the end of the 24-month period referred to in Section 3.7(c) hereof.

                  "Expected Distributions" means, with respect to the
Certificates of any Trust on any Current Distribution Date, the sum of (x)
accrued and unpaid interest on such Certificates (excluding interest, if any,
payable with respect to the Deposits related to such Trust) and (y) the
difference between (A) the Pool Balance of such Certificates as of the
immediately preceding Distribution Date (or, if the Current Distribution Date is
the first Distribution Date, the original

                                       10
<PAGE>   14

aggregate face amount of the Certificates of such Trust), and (B) the Pool
Balance of such Certificates as of the Current Distribution Date calculated on
the basis that (i) the principal of the Equipment Notes held in such Trust has
been paid when due (whether at stated maturity, upon redemption, prepayment,
purchase, Acceleration or otherwise) and such payments have been distributed to
the holders of such Certificates and (ii) the principal of any Equipment Notes
formerly held in such Trust that have been sold pursuant to the terms hereof has
been paid in full and such payments have been distributed to the holders of such
Certificates, but without giving effect to any reduction in the Pool Balance as
a result of any distribution attributable to Deposits occurring after the
immediately preceding Distribution Date (or, if the Current Distribution Date is
the first Distribution Date, occurring after the initial issuance of the
Certificates of such Trust). For purposes of calculating Expected Distributions
with respect to the Certificates of any Trust, any premium paid on the Equipment
Notes held in such Trust which has not been distributed to the
Certificateholders of such Trust (other than such premium or a portion thereof
applied to the payment of interest on the Certificates of such Trust or the
reduction of the Pool Balance of such Trust) shall be added to the amount of
such Expected Distributions.

                  "Expiry Date" with respect to any Liquidity Facility, shall
have the meaning set forth in such Liquidity Facility.

                  "Fee Letter" means the Fee Letter dated as of the date hereof
among America West, Citibank and the Subordination Agent with respect to the
initial Liquidity Facilities and any fee letter entered into among America West,
the Subordination Agent and any Replacement Liquidity Provider.

                  "Final Distributions" means, with respect to the Certificates
of any Trust on any Distribution Date, the sum of (x) the aggregate amount of
all accrued and unpaid interest on such Certificates (excluding interest, if
any, payable with respect to the Deposits relating to such Trust) and (y) the
Pool Balance of such Certificates as of the immediately preceding Distribution
Date (less the amount of the Deposits for such Class of Certificates as of such
preceding Distribution Date other than any portion of such Deposits thereafter
used to acquire Equipment Notes pursuant to the Note Purchase Agreement). For
purposes of calculating Final Distributions with respect to the Certificates of
any Trust, any premium paid on the Equipment Notes held in such Trust which has
not been distributed to the Certificateholders of such Trust (other than such
premium or a portion thereof applied to the payment of interest on the
Certificates of such Trust or the reduction of the Pool Balance of such Trust)
shall be added to the amount of such Final Distributions.

                  "Final Drawing" has the meaning assigned to such term in
Section 3.6(i).

                  "Final Legal Distribution Date" means (i) with respect to the
Class G Certificates, January 2, 2022 and (ii) with respect to the Class C
Certificates, January 2, 2008.

                  "Financing Agreement" means each of the Participation
Agreements and the Note Purchase Agreement.

                  "Indenture" means each of the Trust Indentures entered into by
the Loan Trustee, and the Owner Trustee or America West, pursuant to the Note
Purchase Agreement, in each case

                                       11
<PAGE>   15

as the same may be amended, supplemented or otherwise modified from time to time
in accordance with its terms.

                  "Indenture Default" means, with respect to any Indenture, any
Event of Default (as such term is defined in such Indenture) thereunder.

                  "Initial Purchasers" means Morgan Stanley & Co. Incorporated,
Salomon Smith Barney Inc., Deutsche Bank Securities Inc., Donaldson, Lufkin &
Jenrette Securities Corporation and Merrill Lynch, Pierce, Fenner & Smith
Incorporated.

                  "Interest Drawing" has the meaning assigned to such term in
Section 3.6(a).

                  "Interest Payment Date" means, with respect to any Liquidity
Facility, the final day of each Interest Period thereunder.

                  "Interest Period" with respect to any Liquidity Facility, has
the meaning assigned to such term in such Liquidity Facility.

                  "Investment Earnings" means investment earnings on funds on
deposit in the Trust Accounts net of losses and investment expenses of the
Subordination Agent in making such investments.

                  "Last Payment Date" has the meaning assigned to such term in
Section 3.7(c).

                  "Lease" means, with respect to each Indenture pertaining to a
Leased Aircraft, the "Lease" referred to therein.

                  "Leased Aircraft" has the meaning assigned to such term in the
preliminary statements of this Agreement.

                  "Leased Aircraft Indenture" means, with respect to each Leased
Aircraft, the Indenture pertaining thereto.

                  "Lending Office" means, with respect to any Liquidity
Facility, the office of the Liquidity Provider thereunder, presently located at
New York, New York or such other office as such Liquidity Provider from time to
time shall notify the applicable Trustee as its "Lending Office" under any such
Liquidity Facility; provided that such Liquidity Provider shall not change its
Lending Office to a Lending Office outside the United States of America except
in accordance with Section 3.01, 3.02 or 3.03 of any such Liquidity Facility.

                  "Lien" means any mortgage, pledge, lien, charge, claim,
disposition of title, encumbrance, lease, sublease, sub-sublease or security
interest of any kind, including, without limitation, any thereof arising under
any conditional sales or other title retention agreement.

                  "Liquidity Event of Default" with respect to any Liquidity
Facility, has the meaning assigned to such term in such Liquidity Facility.

                                       12
<PAGE>   16

                  "Liquidity Expenses" means all Liquidity Obligations other
than (i) the amount of any Drawings under the Liquidity Facilities and (ii) any
interest accrued on any Liquidity Obligations.

                  "Liquidity Facilities" means, at any time, the Class G
Liquidity Facility or the Class C Liquidity Facility.

                  "Liquidity Obligations" means all principal, interest, fees
and other amounts owing to the Liquidity Providers under the Liquidity
Facilities, Section 9.1 of the Participation Agreements or the Fee Letter.

                  "Liquidity Provider" means, at any time, any Class G Liquidity
Provider or any Class C Liquidity Provider, as applicable.

                  "Loan Trustee" means, with respect to any Indenture, the
mortgagee thereunder.

                  "LTV Appraisals" has the meaning assigned to such term in
Section 4.1(a).

                  "LTV Collateral Amount" of any Leased Aircraft or Owned
Aircraft for any Class of Certificates means, as of any Distribution Date, the
lesser of (i) the LTV Ratio for such Class of Certificates multiplied by the
Appraised Current Market Value of such Aircraft (or with respect to any such
Aircraft which has suffered an Event of Loss under and as defined in the
relevant Lease (in the case of a Leased Aircraft) or Indenture (in the case of
an Owned Aircraft), the amount of the insurance proceeds paid to the related
Loan Trustee in respect thereof to the extent then held by such Loan Trustee
(and/or on deposit in the Special Payments Account) or payable to such Loan
Trustee in respect thereof) and (ii) the outstanding principal amount of the
Equipment Notes secured by such Aircraft after giving effect to any principal
payments of such Equipment Notes on or before such Distribution Date.

                  "LTV Ratio" means for the Class G Certificates, 57% and for
the Class C Certificates, 62%.

                  "Material Adverse Tax Event" has the meaning assigned to such
term in Section 17.3(a)(4) of the Lease.

                  "Minimum Sale Price" means, with respect to any Aircraft or
the Equipment Notes issued in respect of such Aircraft, at any time, the lesser
of (a) 75% of the Appraised Current Market Value of such Aircraft and (b) the
aggregate outstanding principal amount of such Equipment Notes, plus accrued and
unpaid interest thereon.

                  "Moody's" means Moody's Investors Service, Inc.

                  "New Aircraft" has the meaning ascribed to the term "Aircraft"
in the Note Purchase Agreement.

                  "Non-Controlling Party" means, at any time, any of the
Trustees, the Liquidity Provider or the Policy Provider which is not the
Controlling Party at such time.

                                       13
<PAGE>   17

                  "Non-Extended Facility" has the meaning assigned to such term
in Section 3.6(d).

                  "Non-Extension Drawing" has the meaning assigned to such term
in Section 3.6(d).

                  "Non-Performing Equipment Note" means an Equipment Note issued
pursuant to an Indenture that is not a Performing Equipment Note.

                  "Note Purchase Agreement" means the Note Purchase Agreement
dated as of the date hereof, among America West, each Trustee, the Escrow Agent,
the Subordination Agent and the Paying Agent.

                  "Notice for Payment" means a Notice of Nonpayment as such term
is defined in the Policy.

                  "Notice of Avoided Payment" has the meaning assigned to such
term in the Policy.

                  "Officer's Certificate" of any Person means a certification
signed by a Responsible Officer of such Person.

                  "Operative Agreements" means this Agreement, the Liquidity
Facilities, the Policy, the Policy Provider Agreement, the Indentures, the Trust
Agreements, the Purchase Agreement, the Financing Agreements, the Leases, the
Fee Letter, the Equipment Notes and the Certificates, together with all exhibits
and schedules included with any of the foregoing.

                  "Order" has the meaning assigned to such term in the Policy.

                  "Outstanding" means, when used with respect to each Class of
Certificates, as of the date of determination, all Certificates of such Class
theretofore authenticated and delivered under the related Trust Agreement,
except:

                  (i) Certificates of such Class theretofore canceled by the
         Registrar (as defined in such Trust Agreement) or delivered to the
         Trustee thereunder or such Registrar for cancellation;

                (ii) Certificates of such Class for which money in the full
         amount required to make the final distribution with respect to such
         Certificates pursuant to Section 11.01 of such Trust Agreement has been
         theretofore deposited with the related Trustee in trust for the holders
         of such Certificates as provided in Section 4.01 of such Trust
         Agreement pending distribution of such money to such Certificateholders
         pursuant to such final distribution payment; and

               (iii) Certificates of such Class in exchange for or in lieu of
         which other Certificates have been authenticated and delivered pursuant
         to such Trust Agreement;

                                       14
<PAGE>   18

provided, however, that in determining whether the holders of the requisite
Outstanding amount of such Certificates have given any request, demand,
authorization, direction, notice, consent or waiver hereunder, any Certificates
owned by America West or any of its Affiliates shall be disregarded and deemed
not to be Outstanding, except that, in determining whether such Trustee shall be
protected in relying upon any such request, demand, authorization, direction,
notice, consent or waiver, only Certificates that such Trustee knows to be so
owned shall be so disregarded. Certificates so owned that have been pledged in
good faith may be regarded as Outstanding if the pledgee establishes to the
satisfaction of the applicable Trustee the pledgee's right so to act with
respect to such Certificates and that the pledgee is not America West or any of
its Affiliates.

                  "Overdue Scheduled Payment" means any Scheduled Payment which
is not in fact received by the Subordination Agent within five days after the
Scheduled Payment Date relating thereto.

                  "Owned Aircraft" has the meaning assigned to such term in the
preliminary statements of this Agreement.

                  "Owned Aircraft Indenture" means, with respect to each Owned
Aircraft, the Indenture pertaining to such Aircraft.

                  "Owner Trustee" means, with respect to any Indenture
pertaining to a Leased Aircraft, the Owner Trustee (as defined therein) not in
its individual capacity but solely as trustee under the related owner trust
agreement, together with any successor trustee appointed pursuant to such owner
trust agreement.

                  "Participation Agreement" means, with respect to each
Indenture, the "Participation Agreement" referred to therein.

                  "Payee" has the meaning assigned to such term in Section
2.4(e).

                  "Paying Agent" means WTC, as paying agent under each Escrow
and Paying Agent Agreement, together with its successors in such capacity.

                  "Performing Equipment Note" means an Equipment Note issued
pursuant to an Indenture with respect to which no payment default has occurred
and is continuing (without giving effect to any Acceleration); provided that in
the event of a bankruptcy proceeding under Title 11 of the United States Code
(the "Bankruptcy Code") under which America West is a debtor, any payment
default existing during the 60-day period under Section 1110(a)(2)(A) of the
Bankruptcy Code (or such longer period as may apply under Section 1110(b) of the
Bankruptcy Code) (the "Section 1110 Period") shall not be taken into
consideration, unless during the Section 1110 Period the trustee in such
proceeding or America West (i) fails to agree pursuant to Section 1110 of the
Bankruptcy Code to perform its obligations under the Lease related to such
Equipment Note (in the case of a Leased Aircraft) or under the Indenture related
to such Equipment Note (in the case of an Owned Aircraft) or (ii) does not cure
any such payment default under Section 1110(a)(2)(B) of the Bankruptcy Code
before the expiration of the period applicable thereto as specified in Section
1110(c)(2)(B) of the Bankruptcy Code.

                                       15
<PAGE>   19

                  "Performing Note Deficiency" means any time that less than 65%
of the then aggregate outstanding principal amount of all Equipment Notes are
Performing Equipment Notes.

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

                  "Policy" means the Ambac Certificate Guarantee Insurance
Policy No. AB0379BE, together with the Certificate Guaranty Insurance Policy
Endorsement attached thereto, issued as of the Closing Date, as amended,
supplemented or otherwise modified from time to time in accordance with its
terms.

                  "Policy Account" means the Eligible Deposit Account
established by the Subordination Agent pursuant to Section 2.2(a)(iii).

                  "Policy Drawing" means any payment of a claim under the
Policy.

                  "Policy Expenses" means all amounts (including amounts in
respect of expenses or indemnities) due to the Policy Provider under the Policy
Provider Agreement or the Financing Agreements other than (i) the amount of any
Excess Reimbursement Obligations, (ii) any Policy Drawing, (iii) any interest
accrued on any Policy Provider Obligations and (iv) reimbursement of and
interest on the Liquidity Obligations in respect of the Liquidity Facilities
paid by the Policy Provider to any Liquidity Provider; provided that if, at the
time of determination, a Policy Provider Default exists, Policy Expenses shall
not include any indemnity payments owed to the Policy Provider.

                  "Policy Provider" means Ambac Assurance Corporation.

                  "Policy Provider Agreement" means the Insurance and Indemnity
Agreement dated as of the date hereof among the Subordination Agent, as agent
and trustee for the Class G Trustee, America West and the Policy Provider as
amended, supplemented or otherwise modified from time to time in accordance with
its terms.

                  "Policy Provider Default" shall mean the occurrence of any of
the following events (a) the Policy Provider fails to make a payment required
under the Policy in accordance with its terms and such failure remains
unremedied for 2 Business Days following the delivery of Written Notice of such
failure to the Policy Provider or (b) the Policy Provider (i) files any petition
or commences any case or proceeding under any provisions of any federal or state
law relating to insolvency, bankruptcy, rehabilitation, liquidation or
reorganization, (ii) makes a general assignment for the benefit of its creditors
or (iii) has an order for relief entered against it under any federal or state
law relating to insolvency, bankruptcy, rehabilitation, liquidation or
reorganization that is final and nonappealable, or (c) a court of competent
jurisdiction, the Wisconsin Department of Insurance or another competent
regulatory authority enters a final and nonappealable order, judgment or decree
(i) appointing a custodian, trustee, agent or receiver for the Policy Provider
or for all or any material portion of its property or (ii) authorizing the
taking

                                       16
<PAGE>   20

of possession by a custodian, trustee, agent or receiver of the Policy Provider
(or taking of possession of all or any material portion of the Policy Provider's
property).

                  "Policy Provider Election" has the meaning assigned to such
term in Section 3.7(c).

                  "Policy Provider Obligations" means all reimbursement and
other amounts, including, without limitation, fees and indemnities (to the
extent not included in Policy Expenses), due to the Policy Provider under the
Policy Provider Agreement but shall not include any interest on Policy Drawings
except, if the Class G Liquidity Provider has failed to honor any Interest
Drawing in accordance with Section 2.02(e) of the Class G Liquidity Facility,
interest on any Policy Drawing made to cover the shortfall attributable to such
failure in an amount equal to the amount of interest that would have accrued on
such Interest Drawing if such Interest Drawing had been made in accordance with
Section 2.02(e) of the Class G Liquidity Facility at the interest rate
applicable to such Interest Drawing until such Policy Drawing has been repaid in
full, up to a maximum of three such Policy Drawings.

                  "Policy Provider Rating" shall mean the respective ratings by
each of the Ratings Agencies of the Policy Provider's financial strength in
respect of the Policy.

                  "Policy Provider Threshold Rating" shall mean a Policy
Provider Rating of Aaa by Moody's and AAA by Standard & Poor's.

                  "Pool Balance" means, with respect to each Trust or the
Certificates issued by any Trust, as of any date, (i) the original aggregate
face amount of the Certificates of such Trust less (ii) the aggregate amount of
all payments made in respect of the Certificates of such Trust or in respect of
Deposits relating to such Trust other than payments made in respect of interest
or premium thereon or reimbursement of any costs and expenses in connection
therewith. The Pool Balance for each Trust or for the Certificates issued by any
Trust as of any Distribution Date shall be computed after giving effect to any
special distribution with respect to unused Deposits, payment of principal of
the Equipment Notes, payments under the Policy (other than in respect of
interest on the Certificates) or payment with respect to other Trust Property
held in such Trust and the distribution thereof to be made on that date.

                  "Preference Amount" has the meaning assigned to such term in
the Policy.

                  "Prior Funds" means, with respect to any Distribution Date,
any amounts received by the Escrow Agent in the Class G Paying Agent Account in
respect of accrued interest on the Class G Deposits, any Drawing paid under the
Class G Liquidity Facility in respect of interest due on the Class G
Certificates on such Distribution Date and any withdrawal of funds from the
Class G Cash Collateral Account in respect of such interest.

                  "Proceeding" means any suit in equity, action at law or other
judicial or administrative proceeding.

                  "Provider Incumbency Certificate" has the meaning assigned to
such term in Section 2.5(c).

                                       17
<PAGE>   21

                  "Provider Representatives" has the meaning assigned to such
term in Section 2.5(c).

                  "PTC Event of Default" means, with respect to each Trust
Agreement, the failure to pay within 10 Business Days of the due date thereof:
(i) the outstanding Pool Balance of the applicable Class of Certificates on the
Final Legal Distribution Date for such Class or (ii) interest due on such
Certificates on any Distribution Date (unless the Subordination Agent shall have
made an Interest Drawing, or a withdrawal from the Cash Collateral Account, or
in the case of the Class G Trust Agreement, a drawing under the Policy, with
respect thereto in an aggregate amount sufficient to pay such interest and shall
have distributed such amount to the Trustee entitled thereto).

                  "Purchase Agreement" means the Purchase Agreement dated June
27, 2000 among the Initial Purchasers and America West, relating to the purchase
of the Certificates by the Initial Purchasers, as the same may be amended,
supplemented or otherwise modified from time to time in accordance with its
terms.

                  "Rating Agencies" means, collectively, at any time, each
nationally recognized rating agency which shall have been requested to rate the
Certificates and which shall then be rating the Certificates. The initial Rating
Agencies will be Moody's and Standard & Poor's.

                  "Ratings Confirmation" means, with respect to any action
proposed to be taken, a written confirmation from each of the Rating Agencies
that such action would not result in (i) a reduction of the rating for any Class
of Certificates below the then current rating for such Class of Certificates
such ratings as determined (without regard to the Policy in respect of the Class
G Certificates) or (ii) a withdrawal or suspension of the rating of any Class of
Certificates.

                  "Registration Rights Agreement" means the Exchange and
Registration Rights Agreement dated as of the date hereof, among the Initial
Purchasers, the Trustees and America West, as amended, supplemented or otherwise
modified from time to time in accordance with its terms.

                  "Regular Distribution Dates" means each January 2 and July 2,
commencing on January 2, 2001; provided, however, that, if any such day shall
not be a Business Day, the related distribution shall be made on the next
succeeding Business Day without additional interest.

                  "Replacement Liquidity Facility" means, for any Liquidity
Facility, an irrevocable revolving credit agreement (or agreements) in
substantially the form of the replaced Liquidity Facility, including
reinstatement provisions, or in such other form (which may include a letter of
credit) as shall permit the Rating Agencies to confirm in writing their
respective ratings then in effect for the related Certificates (before
downgrading of such ratings, if any, as a result of the downgrading of the
applicable Liquidity Provider and, in the case of the Class G Liquidity Facility
only, be consented to by the Policy Provider, which consent shall not be
unreasonably withheld or delayed, in a face amount (or in an aggregate face
amount) equal to the amount of interest payable on the Certificates of such
Trust (at the Stated Interest Rate for such Trust, and without regard to
expected future principal payments) on the three Regular Distribution Dates

                                       18
<PAGE>   22

following the date of replacement of such Liquidity Facility and issued by a
Person (or Persons) having unsecured short-term debt ratings issued by both
Rating Agencies which are equal to or higher than the Threshold Rating. Without
limitation of the form that a Replacement Liquidity Facility otherwise may have
pursuant to the preceding sentence, a Replacement Liquidity Facility for any
Class of Certificates may have a stated expiration date earlier than 15 days
after the Final Legal Distribution Date of such Class of Certificates so long as
such Replacement Liquidity Facility provides for a Non-Extension Drawing as
contemplated by Section 3.6(d) hereof.

                  "Replacement Liquidity Provider" means a Person (or Persons)
who issues a Replacement Liquidity Facility.

                  "Required Amount" means, with respect to each Liquidity
Facility, or the Cash Collateral Account, for any Class, for any day, the sum of
the aggregate amount of interest, calculated at the rate per annum equal to the
Stated Interest Rate for the related Class of Certificates, that would be
payable on such Class of Certificates on each of the three successive Regular
Distribution Dates immediately following such day or, if such day is a Regular
Distribution Date, on such day and the succeeding two Regular Distribution
Dates, in each case calculated on the basis of the Pool Balance of such Class of
Certificates on such date and without regard to expected future payments of
principal on such Class of Certificates. The Pool Balance for purposes of the
definition of Required Amount with respect to the Class G Liquidity Facility
shall, in the event of any Policy Provider Election, be deemed to be reduced by
the amount (if positive) by which (a) the then outstanding principal balance of
each Series G Equipment Note in respect of which such Policy Provider Election
has been made shall exceed (b) the amount of any Policy Drawings previously paid
by the Policy Provider in respect of principal on such Series G Equipment Note.

                  "Responsible Officer" means (i) with respect to the
Subordination Agent and each of the Trustees, any officer in the corporate trust
administration department of the Subordination Agent or such Trustee or any
other officer customarily performing functions similar to those performed by the
Persons who at the time shall be such officers, respectively, or to whom any
corporate trust matter is referred because of his knowledge of and familiarity
with a particular subject, (ii) with respect to each Liquidity Provider, any
authorized officer of such Liquidity Provider, and (iii) with respect to the
Policy Provider, any authorized officer of the Policy Provider.

                  "Scheduled Payment" means, with respect to any Equipment Note,
(i) any payment of principal or interest on such Equipment Note (other than an
Overdue Scheduled Payment) due from the obligor thereon or (ii) any payment of
interest on the corresponding Class of Certificates with funds drawn under any
Liquidity Facility or the Policy, which payment represents the installment of
principal at the stated maturity of such installment of principal on such
Equipment Note, the payment of regularly scheduled interest accrued on the
unpaid principal amount of such Equipment Note, or both; provided that any
payment of principal of, premium, if any, or interest resulting from the
redemption or purchase of any Equipment Note shall not constitute a Scheduled
Payment.

                                       19
<PAGE>   23

                  "Scheduled Payment Date" means, with respect to any Scheduled
Payment, the date on which such Scheduled Payment is scheduled to be made.

                  "Section 2.4(b) Fraction" has the meaning assigned to such
term in Section 2.4(b).

                  "Series C Equipment Notes" means the 9.244% Series C Equipment
Notes issued pursuant to any Indenture by the related Owner Trustee or America
West, as the case may be, and authenticated by the Loan Trustee thereunder, and
any such Equipment Notes issued in exchange therefor or replacement thereof
pursuant to the terms of such Indenture.

                  "Series D Equipment Notes" means equipment notes, if any,
issued pursuant to any Indenture by the related Owner Trustee or America West,
as the case may be, and authenticated by the Loan Trustee thereunder, and
designated as "Series D" thereunder, and any such equipment notes issued in
exchange therefor or replacement thereof pursuant to the terms of such
Indenture.

                  "Series G Equipment Notes" means the 8.057% Series G Equipment
Notes issued pursuant to any Indenture by the related Owner Trustee or America
West, as the case may be, and authenticated by the Loan Trustee thereunder, and
any such Equipment Notes issued in exchange therefor or replacement thereof
pursuant to the terms of such Indenture.

                  "Special Distribution Date" means with respect to any Special
Payment: (i) the date chosen by the Subordination Agent pursuant to Section
2.4(a) for the distribution of such Special Payment in accordance with this
Agreement, whether distributed pursuant to Section 2.4 or Section 3.3 hereof or
(ii) the date chosen by the Subordination Agent pursuant to Section 3.7(b),
3.7(c) or Section 3.7(e), as the case may be, for the distribution of such
Special Payment in accordance with the provisions thereof.

                  "Special Payment" means any payment (other than a Scheduled
Payment) in respect of, or any proceeds of, any Equipment Note or Trust
Indenture Estate or Collateral.

                  "Special Payments Account" means the Eligible Deposit Account
created pursuant to Section 2.2 as a sub-account to the Collection Account.

                  "Standard & Poor's" means Standard & Poor's Ratings Services,
a division of The McGraw-Hill Companies, Inc.

                  "Stated Amount" with respect to any Liquidity Facility, means
the Maximum Commitment (as defined in such Liquidity Facility) of the applicable
Liquidity Provider thereunder.

                  "Stated Expiration Date" has the meaning specified in Section
3.6(d).

                  "Stated Interest Rate" means (i) with respect to the Class G
Certificates, 8.057% per annum, and (ii) with respect to the Class C
Certificates, 9.244% per annum (such rate with respect to each Class of
Certificates, the "Initial Stated Interest Rate" for such Class), plus, in each
case, solely in the event no Registration Event (as defined in the Registration
Rights

                                       20
<PAGE>   24

Agreement) occurs on or prior to the 210th day after the Closing Date, an
additional margin equal to 0.50% per annum, from and including such 210th day
(provided that any such additional margin shall cease to be in effect from and
including the earlier of (i) the date on which such Registration Event occurs
and (ii) the date on which there ceases to be any Registrable Certificates (as
defined in the Registration Rights Agreement)); provided that if the Shelf
Registration Statement (as defined in the Registration Rights Agreement) ceases
to be effective at any time during the period specified by Section 2(b)(B) of
the Registration Rights Agreement for more than 60 days, whether or not
consecutive, during any 12-month period, the Stated Interest Rate shall be
increased by 0.50% per annum from the 61st day of the applicable 12-month period
such Shelf Registration Statement ceases to be effective until such time as the
Shelf Registration Statement again becomes effective (or, if earlier, the end of
the period specified by Section 2(b)(B) of the Registration Rights Agreement).
For the avoidance of doubt, the Stated Interest Rate for any Class of
Certificates shall never exceed 0.50% per annum over the initial Stated Interest
Rate for such Class of Certificates.

                  "Subordination Agent" has the meaning assigned to it in the
preliminary statements to this Agreement.

                  "Subordination Agent Incumbency Certificate" has the meaning
assigned to such term in Section 2.5(a).

                  "Subordination Agent Representatives" has the meaning assigned
to such term in Section 2.5(a).

                  "Substitute Aircraft" shall have the meaning set forth in the
Note Purchase Agreement.

                  "Successor Trusts" means, collectively, America West Airlines
Pass Through Trust 2000-1G-S and America West Airlines Pass Through Trust
2000-1C-S.

                  "Tax" and "Taxes" mean any and all taxes, levies, duties,
tariffs, imposts, and other charges of a similar kind (together with any and all
interest, penalties, loss, damage, liability, expense, additions to tax and
additional amounts or costs incurred or imposed with respect thereto) imposed or
otherwise assessed by the United States of America or by any state, local or
foreign government (or any subdivision or agency thereof) or other taxing
authority, including, without limitation: taxes on or with respect to income,
franchises, windfall or other profits, gross receipts, property, sales, use,
capital stock, payroll, employment, social security, workers' compensation,
unemployment compensation, or net worth; taxes in the nature of excise,
withholding, ad valorem, stamp, transfer, non-recoverable value added, taxes on
goods and services and gains taxes.

                  "Termination Notice" with respect to any Liquidity Facility
has the meaning assigned to such term in such Liquidity Facility.

                  "Threshold Rating" means the short-term unsecured debt rating
of P-1 by Moody's and A-1 by Standard & Poor's for each Liquidity Provider.

                                       21
<PAGE>   25

                  "Transfer" means, with respect to any particular Trust, the
transfers contemplated by the Assignment and Assumption Agreement with respect
to such Trust.

                  "Treasury Regulations" means regulations, including proposed
or temporary regulations, promulgated under the Code. References herein to
specific provisions of proposed or temporary regulations shall include analogous
provisions of final Treasury Regulations or other successor Treasury
Regulations.

                  "Triggering Event" means (x) the occurrence of an Indenture
Default under all of the Indentures resulting in a PTC Event of Default with
respect to the most senior Class of Certificates then Outstanding, (y) the
Acceleration of all of the outstanding Equipment Notes (provided that, with
respect to the period prior to the Delivery Period Expiry Date, the aggregate
principal balance of such Equipment Notes is in excess of $100 million) or (z)
the occurrence of an America West Bankruptcy Event.

                  "Trust" means either of the Class G Trust or the Class C
Trust.

                  "Trust Accounts" has the meaning assigned to such term in
Section 2.2(a).

                  "Trust Agreement" means either of the Class G Trust Agreement
or the Class C Trust Agreement.

                  "Trust Indenture Estate" has the meaning assigned to such term
in the Leased Aircraft Indentures.

                  "Trust Property" with respect to any Trust, has the meaning
set forth in the Trust Agreement for such Trust.

                  "Trustee" means any of the Class G Trustee or the Class C
Trustee.

                  "Trustee Incumbency Certificate" has the meaning assigned to
such term in Section 2.5(b).

                  "Trustee Representatives" has the meaning assigned to such
term in Section 2.5(b).

                  "Unindemnified Tax" means (i) any Tax imposed on the net
income, net worth or capital, any franchise Tax or similar doing business Tax of
the Subordination Agent (other than any such Tax imposed as a result of the
Company's assumption of the Equipment Notes pursuant to the purchase of an
Aircraft on an EBO Date or a Material Adverse Tax Event, and (ii) any
withholding Tax imposed by the United States (including, without limitation, any
withholding Tax imposed by the United States which is imposed or increased as a
result of the Subordination Agent's failing to deliver to the Company any
certificate or document necessary to establish that payments under this
Agreement are exempt from withholding Tax).

                  "Written Notice" means, from the Subordination Agent, any
Trustee, Liquidity Provider or the Policy Provider, a written instrument
executed by the Designated Representative

                                       22
<PAGE>   26

of such Person. An invoice delivered by a Liquidity Provider pursuant to Section
3.1 in accordance with its normal invoicing procedures shall constitute Written
Notice under such Section.

                  "WTC" has the meaning assigned to such term in the recital of
parties to this Agreement.

                                   ARTICLE II

                        TRUST ACCOUNTS; CONTROLLING PARTY

                  SECTION 2.1. Agreement to Terms of Subordination; Payments
from Monies Received Only. (a) Each Trustee hereby acknowledges and agrees to
the terms of subordination and distribution set forth in this Agreement in
respect of each Class of Certificates and agrees to enforce such provisions and
cause all payments in respect of the Equipment Notes and the Liquidity
Facilities to be applied in accordance with the terms of this Agreement. In
addition, each Trustee hereby agrees to cause the Equipment Notes purchased by
the related Trust to be registered in the name of the Subordination Agent or its
nominee, as agent and trustee for such Trustee, to be held in trust by the
Subordination Agent solely for the purpose of facilitating the enforcement of
the subordination and other provisions of this Agreement.

                  (b) Except as otherwise expressly provided in the next
succeeding sentence of this Section 2.1, all payments to be made by the
Subordination Agent hereunder shall be made only from amounts received by it
that constitute Scheduled Payments, Special Payments, payments under Section 9.1
of the Participation Agreements or payments under Sections 6 and 7 of the Note
Purchase Agreement, and only to the extent that the Subordination Agent shall
have received sufficient income or proceeds therefrom to enable it to make such
payments in accordance with the terms hereof. Each of the Trustees and the
Subordination Agent hereby agrees and, as provided in each Trust Agreement, each
Certificateholder, by its acceptance of a Certificate, each Liquidity Provider,
by entering into the Liquidity Facility to which it is a party, and the Policy
Provider, by entering into the Policy Provider Agreement, has agreed to look
solely to such amounts to the extent available for distribution to it as
provided in this Agreement and to the relevant Deposits and that none of the
Trustees, Owner Trustees, Loan Trustees, Owner Participants nor the
Subordination Agent or WTC is personally liable to any of them for any amounts
payable or any liability under this Agreement, any Trust Agreement, any
Liquidity Facility, the Policy Provider Agreement or such Certificate, except
(in the case of the Subordination Agent) as expressly provided herein or (in the
case of the Trustees) as expressly provided in each Trust Agreement or (in the
case of the Owner Trustees and the Loan Trustees) as expressly provided in any
Operative Agreement.

                  SECTION 2.2. Trust Accounts. (a) Upon the execution of this
Agreement, the Subordination Agent shall establish and maintain in its name (i)
the Collection Account as an Eligible Deposit Account, bearing a designation
clearly indicating that the funds deposited therein are held in trust for the
benefit of the Trustees, the Certificateholders, the Liquidity Providers and the
Policy Provider, (ii) as a sub-account in the Collection Account, the Special
Payments Account as an Eligible Deposit Account, bearing a designation clearly
indicating that the funds deposited therein are held in trust for the benefit of
the Trustees, the Certificateholders,

                                       23
<PAGE>   27

the Liquidity Providers and the Policy Provider, and (iii) the Policy Account as
an Eligible Deposit Account bearing a designation clearly indicating that the
funds deposited therein are held in trust for the benefit of the Class G Trustee
and the Class G Certificateholders. The Subordination Agent shall establish and
maintain the Cash Collateral Accounts pursuant to and under the circumstances
set forth in Section 3.6(f) hereof. Upon such establishment and maintenance
under Section 3.6(f) hereof, the Cash Collateral Accounts shall, together with
the Collection Account, constitute the "Trust Accounts" hereunder.

                  (b) Funds on deposit in the Trust Accounts shall be invested
and reinvested by the Subordination Agent in Eligible Investments selected by
the Subordination Agent if such investments are reasonably available and have
maturities no later than the earlier of (i) 90 days following the date of such
investment and (ii) the Business Day immediately preceding the Regular
Distribution Date or the date of the related distribution pursuant to Section
2.4 hereof, as the case may be, next following the date of such investment;
provided, however, that following the making of a Downgrade Drawing or a
Non-Extension Drawing under any Liquidity Facility, the Subordination Agent
shall invest and reinvest such amounts in Eligible Investments at the direction
of America West (or, if and to the extent so specified to the Subordination
Agent by America West with respect to any Liquidity Facility, the Liquidity
Provider with respect to such Liquidity Facility); provided further, however,
that following the making of a Downgrade Drawing or Non-Extension Drawing under
any initial Liquidity Facility, the Subordination Agent shall invest and
reinvest the amounts in the Cash Collateral Account with respect to such
Liquidity Facility in Eligible Investments pursuant to the written instructions
of the Liquidity Provider funding such Drawing; provided further, however, that
upon the occurrence and during the continuation of a Triggering Event, the
Subordination Agent shall invest and reinvest such amounts in accordance with
the written instructions of the Controlling Party. Unless otherwise expressly
provided in this Agreement (including, without limitation, with respect to
Investment Earnings on amounts on deposit in the Cash Collateral Accounts,
Section 3.6(f) hereof), any Investment Earnings shall be deposited in the
Collection Account when received by the Subordination Agent and shall be applied
by the Subordination Agent in the same manner as the other amounts on deposit in
the Collection Account are to be applied and any losses shall be charged against
the principal amount invested, in each case net of the Subordination Agent's
reasonable fees and expenses in making such investments. The Subordination Agent
shall not be liable for any loss resulting from any investment, reinvestment or
liquidation required to be made under this Agreement other than by reason of its
willful misconduct or gross negligence. Eligible Investments and any other
investment required to be made hereunder shall be held to their maturities
except that any such investment may be sold (without regard to its maturity) by
the Subordination Agent without instructions whenever such sale is necessary to
make a distribution required under this Agreement. Uninvested funds held
hereunder shall not earn or accrue interest.

                  (c) The Subordination Agent shall possess all right, title and
interest in all funds on deposit from time to time in the Trust Accounts and in
all proceeds thereof (including all income thereon, except as otherwise
expressly provided herein with respect to Investment Earnings). The Trust
Accounts shall be held in trust by the Subordination Agent under the sole
dominion and control of the Subordination Agent for the benefit of the Trustees,
the Certificateholders, the Liquidity Providers and the Policy Provider, as the
case may be. If, at any time, any of the Trust Accounts ceases to be an Eligible
Deposit Account, the Subordination

                                       24
<PAGE>   28

Agent shall within 10 Business Days (or such longer period, not to exceed 30
calendar days, to which the Policy Provider and each Rating Agency may consent)
establish a new Collection Account, Special Payments Account, Policy Account or
Cash Collateral Account, as the case may be, as an Eligible Deposit Account and
shall transfer any cash and/or any investments to such new Collection Account,
Special Payments Account, Policy Account or Cash Collateral Account, as the case
may be. So long as WTC is an Eligible Institution, the Trust Accounts shall be
maintained with it as Eligible Deposit Accounts.

                  SECTION 2.3. Deposits to the Collection Account and Special
Payments Account. (a) The Subordination Agent shall, upon receipt thereof,
deposit in the Collection Account all Scheduled Payments received by it (other
than any Scheduled Payment which by the express terms hereof is to be deposited
to the Policy Account or a Cash Collateral Account).

                  (b) The Subordination Agent shall, on each date when one or
more Special Payments are made to the Subordination Agent as holder of the
Equipment Notes, deposit in the Special Payments Account the aggregate amount of
such Special Payments.

                  SECTION 2.4.  Distributions of Special Payments. (a) Notice of
Special Payment. Except as provided in Section 2.4(e) below, upon receipt by the
Subordination Agent, as registered holder of the Equipment Notes, of any notice
of a Special Payment (or, in the absence of any such notice, upon receipt by the
Subordination Agent of a Special Payment), the Subordination Agent shall
promptly give notice thereof to each Trustee, the Liquidity Providers and the
Policy Provider. The Subordination Agent shall promptly calculate the amount of
the redemption or purchase of Equipment Notes, the amount of any Overdue
Scheduled Payment or the proceeds of Equipment Notes, the Trust Indenture Estate
or Collateral, as the case may be, comprising such Special Payment under the
applicable Indenture or Indentures and shall promptly send to each Trustee a
Written Notice of such amount and the amount allocable to each Trust. Such
Written Notice shall also set the distribution date for such Special Payment (a
"Special Distribution Date"), which shall be the Business Day which immediately
follows the later to occur of (x) the 15th day after the date of such Written
Notice or (y) the date the Subordination Agent has received or expects to
receive such Special Payment. Amounts on deposit in the Special Payments Account
shall be distributed in accordance with Sections 2.4(b) and 2.4(c) hereof, as
applicable.

                  (b) Redemptions and Purchases of Equipment Notes. (i) So long
as no Triggering Event shall have occurred (whether or not continuing), the
Subordination Agent shall make distributions pursuant to this Section 2.4(b) of
amounts on deposit in the Special Payments Account on account of the redemption,
purchase (including, without limitation, a purchase resulting from a sale of the
Equipment Notes permitted by Article IV hereof) or prepayment of all of the
Equipment Notes issued pursuant to an Indenture on the Special Distribution Date
for such Special Payment in the following order of priority:

                  first, such amount as shall be required to pay (A) the
         aggregate amount of all past due Liquidity Expenses and Policy Expenses
         ("past due amounts") plus (B) the product of (x) the aggregate amount
         of all accrued and unpaid (but not past due) Liquidity Expenses and
         Policy Expenses to such Special Distribution Date multiplied by (y) a
         fraction, the numerator of which is the aggregate outstanding principal
         amount of

                                       25
<PAGE>   29
         Equipment Notes being redeemed, purchased or prepaid on such Special
         Distribution Date and the denominator of which is the aggregate
         outstanding principal amount of all Equipment Notes (the "Section
         2.4(b) Fraction")("accrued amounts"), shall be distributed to the
         relevant Liquidity Providers and the Policy Provider first in
         satisfaction of any past due amounts and then in satisfaction of the
         accrued amounts, in each case, pro rata on the basis of the amount of
         Liquidity Expenses and Policy Expenses, owed to each Liquidity Provider
         and the Policy Provider;

                  second, such amount as shall be required to pay (i) (A) all
         accrued and unpaid interest (including interest accrued and unpaid on
         any Interest Drawing or any Applied Provider Advance (as defined in any
         Liquidity Facility)) then in arrears on all Liquidity Obligations plus
         (B) the product of (x) the aggregate amount of all accrued and unpaid
         interest on all Liquidity Obligations not in arrears to such Special
         Distribution Date (at the rate provided in the applicable Liquidity
         Facility) multiplied by (y) the Section 2.4(b) Fraction (in each case
         determined after application of the proceeds of any Excess Interest
         Policy Drawing or other payment by the Policy Provider to the
         applicable Liquidity Provider in respect of any interest on Interest
         Drawings in accordance with the provisions of Section 2.6(c)), (ii)(A)
         all accrued and unpaid interest then in arrears on any Policy Drawings
         made in respect of any shortfall attributable to a failure by the Class
         G Liquidity Provider to honor an Interest Drawing (as more fully
         provided in the definition of "Policy Provider Obligations") plus (B)
         the product of (x) the aggregate amount of all accrued and unpaid
         interest on such Policy Drawings not in arrears to such Special
         Distribution Date multiplied by (y) the Section 2.4(b) Fraction, and
         (iii) if the Policy Provider has elected pursuant to the proviso to
         Section 2.6(c) to pay to each Liquidity Provider all outstanding
         Drawings and interest thereon owing to such Liquidity Provider under
         the applicable Liquidity Facility, the product of (x) the amount of
         such payment made to such Liquidity Provider attributable to interest
         accrued on such Drawings multiplied by (y) the Section 2.4(b) Fraction,
         shall be distributed to the Liquidity Providers and the Policy Provider
         pro rata on the basis of the amount of such Liquidity Obligations owed
         to each Liquidity Provider and the amount of unreimbursed Policy
         Provider Obligations payable under this clause "second" to the Policy
         Provider;

                  third, such amount as shall be required (i)(A) if any Cash
         Collateral Account had been previously funded as provided in Section
         3.6(f), to fund such Cash Collateral Account up to its Required Amount
         shall be deposited in such Cash Collateral Account, (B) if any
         Liquidity Facility shall become a Downgraded Facility or a Non-Extended
         Facility at a time when unreimbursed Interest Drawings under such
         Liquidity Facility have reduced the Available Amount thereunder to
         zero, to deposit into the related Cash Collateral Account an amount
         equal to such Cash Collateral Account's Required Amount shall be
         deposited in such Cash Collateral Account, and (C) if, with respect to
         any particular Liquidity Facility, neither subclause (i)(A) nor
         subclause (i)(B) of this clause "third" are applicable, to pay or
         reimburse the Liquidity Provider in respect of such Liquidity Facility
         in an amount equal to the product of (x) the amount of any unreimbursed
         Interest Drawings (net of any and all payments made by the Policy
         Provider to the Liquidity Provider with respect to the principal of any
         Interest Drawing under such Liquidity Facility) under such Liquidity
         Facility multiplied by (y) the Section 2.4(b) Fraction and (ii) if the
         Policy Provider has elected pursuant to the proviso to

                                       26
<PAGE>   30

         Section 2.6(c) to pay to each Liquidity Provider all outstanding
         Drawings and interest thereon owing to such Liquidity Provider under
         the applicable Liquidity Facility, the product of (x) the amount of
         such payment made to such Liquidity Provider in respect of principal of
         Drawings under such Liquidity Facility multiplied by (y) the Section
         2.4(b) Fraction, shall be distributed to such Liquidity Provider, pro
         rata on the basis of the amounts of all such deficiencies and/or
         unreimbursed Interest Drawings in respect of each Liquidity Provider
         and the amount of unreimbursed Policy Provider Obligations payable
         under this clause "third" to the Policy Provider;

                  fourth, if, with respect to any particular Liquidity Facility,
         any amounts are to be distributed pursuant to either subclause (i)(A)
         or (i)(B) of clause "third" above, then the Liquidity Provider with
         respect to such Liquidity Facility shall be paid the excess of (x) the
         aggregate outstanding amount of unreimbursed Advances (whether or not
         then due) under such Liquidity Facility over (y) the Required Amount
         for the relevant Class, pro rata on the basis of such amounts in
         respect of each Liquidity Provider;

                  fifth, such amount as shall be required to pay in full
         Expected Distributions to the holders of Class G Certificates on such
         Special Distribution Date shall be distributed to the Class G Trustee;

                  sixth, such amount as shall be required to pay the Policy
         Provider all Policy Provider Obligations then due to the Policy
         Provider under the Policy Provider Agreement (other than amounts
         payable pursuant to clauses "first", "second" and "third" of this
         Section 2.4 and any Excess Reimbursement Obligations) shall be paid to
         the Policy Provider;

                  seventh, such amount as shall be required to pay in full
         Expected Distributions to the holders of Class C Certificates on such
         Special Distribution Date shall be distributed to the Class C Trustee;

                  eighth, such amounts as shall be required to pay any Excess
         Reimbursement Obligations to the Policy Provider; and

                  ninth, the balance, if any, of such Special Payment shall be
         transferred to the Collection Account for distribution in accordance
         with Section 3.2 hereof.

For the purposes of this Section 2.4(b)(i), clause (x) of the definition of
"Expected Distributions" shall be deemed to read as follows: "(x) accrued, due
and unpaid interest on such Certificates together with (without duplication)
accrued and unpaid interest on a portion of such Certificates equal to the
outstanding principal amount of the Equipment Notes held in such Trust and being
redeemed, purchased or prepaid (immediately prior to such redemption, purchase
or prepayment), in each case excluding interest, if any, payable with respect to
the Deposits related to such Trust".

                  (ii) Upon and after the occurrence of a Triggering Event
(whether or not continuing), the Subordination Agent shall make distributions
pursuant to this Section 2.4(b) of amounts on deposit in the Special Payments
Account on account of the redemption or purchase

                                       27
<PAGE>   31

of all of the Equipment Notes issued pursuant to an Indenture on the Special
Distribution Date for such Special Payment in accordance with Section 3.3
hereof.

                  (c) Other Special Payments. Except as provided in clause (e)
below, any amounts on deposit in the Special Payments Account other than in
respect of amounts to be distributed pursuant to Section 2.4(b) shall be
distributed on the Special Distribution Date therefor in accordance with Article
III hereof.

                  (d) Investment of Amounts in Special Payments Account. Any
amounts on deposit in the Special Payments Account prior to the distribution
thereof pursuant to Section 2.4(b) or (c) shall be invested in accordance with
Section 2.2(b). Investment Earnings on such investments shall be distributed in
accordance with Section 2.4(b) or (c), as the case may be.

                  (e) Certain Payments. The Subordination Agent will distribute
promptly upon receipt thereof (i) any indemnity payment or expense reimbursement
received by it from the Owner Participant, the Owner Trustee or America West in
respect of any Trustee, any Liquidity Provider, any Policy Provider, any Paying
Agent, any Depositary or any Escrow Agent (collectively, the "Payees") and (ii)
except as otherwise provided in Section 2.4(b), 3.2 or 3.3, any compensation
received by it from the Owner Participant, the Owner Trustee or America West
under any Operative Agreement in respect of any Payee, directly to the Payee
entitled thereto.

                  SECTION 2.5. Designated Representatives. (a) With the delivery
of this Agreement, the Subordination Agent shall furnish to each Liquidity
Provider, the Policy Provider and each Trustee, and from time to time thereafter
may furnish to each Liquidity Provider, the Policy Provider and each Trustee, at
the Subordination Agent's discretion, or upon any Liquidity Provider's, the
Policy Provider's or Trustee's request (which request shall not be made more
than one time in any 12-month period), a certificate (a "Subordination Agent
Incumbency Certificate") of a Responsible Officer of the Subordination Agent
certifying as to the incumbency and specimen signatures of the officers of the
Subordination Agent and the attorney-in-fact and agents of the Subordination
Agent (the "Subordination Agent Representatives") authorized to give Written
Notices on behalf of the Subordination Agent hereunder. Until each Liquidity
Provider, the Policy Provider and Trustee receives a subsequent Subordination
Agent Incumbency Certificate, it shall be entitled to rely on the last
Subordination Agent Incumbency Certificate delivered to it hereunder.

                  (b) With the delivery of this Agreement, each Trustee shall
furnish to the Subordination Agent, and from time to time thereafter may furnish
to the Subordination Agent, at such Trustee's discretion, or upon the
Subordination Agent's request (which request shall not be made more than one
time in any 12-month period), a certificate (a "Trustee Incumbency Certificate")
of a Responsible Officer of such Trustee certifying as to the incumbency and
specimen signatures of the officers of such Trustee and the attorney-in-fact and
agents of such Trustee (the "Trustee Representatives") authorized to give
Written Notices on behalf of such Trustee hereunder. Until the Subordination
Agent receives a subsequent Trustee Incumbency Certificate, it shall be entitled
to rely on the last Trustee Incumbency Certificate delivered to it hereunder.

                                       28
<PAGE>   32

                  (c) With the delivery of this Agreement, each Liquidity
Provider and the Policy Provider shall furnish to the Subordination Agent, and
from time to time thereafter may furnish to the Subordination Agent, at such
Liquidity Provider's or Policy Provider's discretion, or upon the Subordination
Agent's request (which request shall not be made more than one time in any
12-month period), a certificate (each a "Provider Incumbency Certificate") of
any Responsible Officer of such Liquidity Provider or Policy Provider certifying
as to the incumbency and specimen signatures of any officer, attorney-in-fact,
agent or other designated representative of such Liquidity Provider or Policy
Provider (in each case the "Provider Representatives" and, together with the
Subordination Agent Representatives and the Trustee Representatives, the
"Designated Representatives") authorized to give Written Notices on behalf of
such Liquidity Provider or Policy Provider hereunder. Until the Subordination
Agent receives a subsequent Provider Incumbency Certificate, it shall be
entitled to rely on the last Provider Incumbency Certificate delivered to it
hereunder by the relevant Liquidity Provider or the Policy Provider.

                  SECTION 2.6. Controlling Party. (a) Except as provided in
Section 2.6(c) and 9.1(b) hereof, the Trustees, the Liquidity Providers and the
Policy Provider hereby agree that, with respect to any Indenture at any given
time, the Loan Trustee thereunder will be directed by the Controlling Party.

                  (b) The Person who shall be the "Controlling Party" with
respect to any Indenture shall be: (x) the Policy Provider until the Final
Distribution on the Class G Certificates has been made and no Policy Provider
Obligations remain outstanding, or, if any Policy Provider Default shall have
occurred and be continuing, the Class G Trustee until the payment of the Final
Distribution to the holders of the Class G Certificates, and thereafter, (y) the
Class C Trustee; provided, that if the Policy Provider makes a payment in full
on a Policy Drawing in respect of a Preference Amount after the payment of the
Final Distributions to the Class G Certificateholders, so long as no Policy
Provider Default has occurred and is continuing, the Policy Provider will be the
Controlling Party until no Policy Provider Obligations remain outstanding, and
thereafter the Class C Trustee. For purposes of giving effect to the foregoing
provisions of this Section 2.6(a) and (b), the Trustees (other than the
Controlling Party) irrevocably agree (and the Certificateholders (other than the
Certificateholders represented by the Controlling Party) shall be deemed to
agree by virtue of their purchase of Certificates) that the Subordination Agent,
as record holder of the Equipment Notes, shall exercise its voting rights in
respect of the Equipment Notes as directed by the Controlling Party and any vote
so exercised shall be binding upon the Trustees and all Certificateholders.

                  The Subordination Agent shall give written notice to all of
the other parties to this Agreement promptly upon a change in the identity of
the Controlling Party. Each of the parties hereto agrees that it shall not
exercise any of the rights of the Controlling Party at such time as it is not
the Controlling Party hereunder; provided, however, that nothing herein
contained shall prevent or prohibit any Non-Controlling Party from exercising
such rights as shall be specifically granted to such Non-Controlling Party
hereunder and under the other Operative Agreements.

                  (c) Notwithstanding the foregoing, at any time after 18 months
from the earliest to occur of (i) the date on which the entire Available Amount
under any Liquidity

                                       29
<PAGE>   33

Facility shall have been drawn (for any reason other than a Downgrade Drawing or
a Non-Extension Drawing) and remain unreimbursed, (ii) the date on which the
entire amount of any Downgrade Drawing or Non-Extension Drawing under any
Liquidity Facility shall have become and remain "Applied Downgrade Advances" or
"Applied Non-Extension Advances", as the case may be, under and as defined in
such Liquidity Facility and (iii) the date on which all Equipment Notes shall
have been Accelerated (provided that, with respect to the period prior to the
Delivery Period Expiry Date, such Equipment Notes have an aggregate outstanding
principal balance of in excess of $100 million), the Liquidity Provider with the
highest outstanding amount of Liquidity Obligations owed to it (so long as such
Liquidity Provider has not defaulted in its obligation to make any Drawing under
any Liquidity Facility) shall have the right to elect, by Written Notice to the
Subordination Agent, the Policy Provider and each of the Trustees, to become the
Controlling Party hereunder with respect to any Indenture at any time from and
including the last day of such 18-month period; provided, however, that if
within 15 Business Days after its receipt of any such written notice from such
Liquidity Provider the Policy Provider pays to the Class G Liquidity Provider
and the Class C Liquidity Provider all outstanding Drawings under each Liquidity
Facility together with accrued interest thereof (as so determined) in respect of
the Class G Liquidity Facility and the Class C Liquidity Facility, respectively,
then, the Policy Provider rather than such Liquidity Provider shall be the
Controlling Party so long as no Policy Provider Default has occurred and is
continuing (otherwise such Liquidity Provider, if it so elects and if Liquidity
Obligations owing to it remain outstanding, or, if it does not so elect or if no
such Liquidity Obligations remain outstanding, the Class G Trustee, shall become
the Controlling Party). In connection with the delivery of any such amended
Policy, the parties hereto agree to enter into an amendment to this Agreement
and the Subordination Agent agrees to enter into an amendment to the Policy
Provider Agreement, in each instance, to make such changes thereto as may be
necessary to give effect to the foregoing (any such amendment to this Agreement
to be subject to delivery to each of the Trustees and the Subordination Agent of
a Ratings Confirmation issued by each Rating Agency with respect thereto and
each such amendment to be in form and substance reasonably satisfactory to each
party thereto). In addition, each Liquidity Provider agrees to request the
Policy Drawings permitted by such amended Policy and that the proceeds thereof
shall reduce pro tanto the Liquidity Obligations owing to it.

                  (d) The exercise of remedies by the Controlling Party under
this Agreement shall be expressly limited by Section 4.1(a)(ii) hereof.

                  (e) The Controlling Party shall not be entitled to require or
obligate any Non-Controlling Party to provide funds necessary to exercise any
right or remedy hereunder.

                                       30
<PAGE>   34

                                   ARTICLE III

                      RECEIPT, DISTRIBUTION AND APPLICATION
                               OF AMOUNTS RECEIVED

                  SECTION 3.1. Written Notice of Distribution. (a) No later than
3:00 P.M. (New York City time) on the Business Day immediately preceding each
Regular Distribution Date (or Special Distribution Date for purposes of Section
2.4(b) hereof, as the case may be), each of the following Persons shall deliver
to the Subordination Agent a Written Notice setting forth the following
information as at the close of business on such Business Day:

                        (i) With respect to the Class G Certificates, the Class
         G Trustee shall separately set forth the amounts to be paid in
         accordance with clause "fifth" of Section 3.2 or 2.4(b), as the case
         may be, hereof;

                       (ii) With respect to the Class C Certificates, the Class
         C Trustee shall separately set forth the amounts to be paid in
         accordance with clause "seventh" of Section 2.4(b) or clause "seventh"
         of Section 3.2, as the case may be, hereof;

                      (iii) With respect to each Liquidity Facility, the
         Liquidity Provider thereunder shall separately set forth the amounts to
         be paid to it in accordance with clauses "first", "second", "third" and
         "fourth" of Section 3.2 or 2.4(b), as the case may be, hereof;

                       (iv) The Policy Provider shall set forth the amounts to
         be paid to it in accordance with clauses "first", "second", "third",
         "sixth" and "eighth" of Section 3.2 or 2.4(b), as the case may be,
         hereof; and

                        (v) Each Trustee shall set forth the amounts to be paid
         in accordance with clause "ninth" of Section 3.2 hereof.

The notices required under this Section 3.1(a) may be in the form of a schedule
or similar document provided to the Subordination Agent by the parties
referenced therein or by any one of them, which schedule or similar document may
state that, unless there has been a prepayment of the Certificates, such
schedule or similar document is to remain in effect until any substitute notice
or amendment shall be given to the Subordination Agent by the party providing
such notice.

                  (b) Following the occurrence of a Triggering Event, the
Subordination Agent shall request the following information from the following
Persons, and each of the following Persons shall, upon the request of the
Subordination Agent, deliver a Written Notice to the Subordination Agent setting
forth for such Person the following information:

                     (i) With respect to the Class G Certificates, the Class G
         Trustee shall separately set forth the amounts to be paid in accordance
         with clauses "first" (to reimburse payments made by the Class G
         Certificateholders pursuant to subclause (iv) of

                                       31
<PAGE>   35

         clause "first" and subclauses (ii) and (iii) of clause "sixth" of
         Section 3.3 hereof) and "seventh" of Section 3.3 hereof;

                    (ii) With respect to the Class C Certificates, the Class C
         Trustee shall separately set forth the amounts to be paid in accordance
         with clauses "first" and "sixth" (to reimburse payments made by the
         Class C Certificateholders pursuant to subclause (iv) of clause "first"
         and subclauses (ii) and (iii) of clause "sixth" of Section 3.3 hereof)
         and "ninth" of Section 3.3 hereof;

                   (iii) With respect to each Liquidity Facility, the Liquidity
         Provider thereunder shall separately set forth the amounts to be paid
         to it in accordance with subclause (iv) of clause "first" of Section
         3.3 hereof, subclause (i) of clause "second" and clauses "third",
         "fourth" and "fifth" of Section 3.3 hereof;

                    (iv) The Policy Provider shall separately set forth amounts
         to be paid to it in accordance with subclauses (iii) and (iv) of clause
         "first" of Section 3.3 hereof, subclause (ii) of clause "second",
         subclauses (ii) and (iii) of clause "third", subclause (ii) of clause
         "fourth", clause "eighth" and clause "tenth" of Section 3.3 hereof; and

                     (v) Each Trustee shall set forth the amounts to be paid in
         accordance with clause "sixth" of Section 3.3 hereof.

                  (c) At such time as a Trustee, a Liquidity Provider or the
Policy Provider shall have received all amounts owing to it (and, in the case of
a Trustee, the Certificateholders for which it is acting) pursuant to Section
2.4, 3.2, 3.3 or 3.7 hereof, as applicable, and, in the case of a Liquidity
Provider or the Policy Provider, its commitment or obligations under the related
Liquidity Facility or the Policy, as the case may be, shall have terminated or
expired, such Person shall, by a Written Notice, so inform the Subordination
Agent and each other party to this Agreement.

                  (d) As provided in Section 6.5 hereof, the Subordination Agent
shall be fully protected in relying on any of the information set forth in a
Written Notice provided by any Trustee, any Liquidity Provider or the Policy
Provider pursuant to paragraphs (a) through (c) above and shall have no
independent obligation to verify, calculate or recalculate any amount set forth
in any Written Notice delivered in accordance with such paragraphs.

                  (e) Any Written Notice delivered by a Trustee, a Liquidity
Provider, the Policy Provider or the Subordination Agent, as applicable,
pursuant to Section 3.1(a), 3.1(b), 3.1(c) or 3.7 hereof, if made prior to 10:00
A.M. (New York City time) on any Business Day shall be effective on the date
delivered (or if delivered later on a Business Day or if delivered on a day
which is not a Business Day shall be effective as of the next Business Day).
Subject to the terms of this Agreement, the Subordination Agent shall as
promptly as practicable comply with any such instructions; provided, however,
that any transfer of funds pursuant to any instruction received after 10:00 A.M.
(New York City time) on any Business Day may be made on the next succeeding
Business Day.

                                       32
<PAGE>   36

                 (f) In the event the Subordination Agent shall not receive
from any Person any information set forth in paragraph (a) or (b) above which is
required to enable the Subordination Agent to make a distribution to such Person
pursuant to Section 2.4(b), 3.2 or 3.3 hereof, the Subordination Agent shall
request such information and, failing to receive any such information, the
Subordination Agent shall not make such distribution(s) to such Person. In such
event, the Subordination Agent shall make distributions pursuant to clauses
"first" through "eighth" of Section 2.4(b), clauses "first" through "ninth" of
Section 3.2 and clauses "first" through "tenth" of Section 3.3 to the extent it
shall have sufficient information to enable it to make such distributions, and
shall continue to hold any funds remaining, after making such distributions,
until the Subordination Agent shall receive all necessary information to enable
it to distribute any funds so withheld.

                  (g) On such dates (but not more frequently than monthly) as
any Liquidity Provider, the Policy Provider or any Trustee shall request, but in
any event automatically at the end of each calendar quarter, the Subordination
Agent shall send to such party a written statement reflecting all amounts on
deposit with the Subordination Agent pursuant to Section 3.1(f) hereof.

                  SECTION 3.2. Distribution of Amounts on Deposit in the
Collection Account. Except as otherwise provided in Sections 2.4, 3.1(f), 3.3,
3.4 and 3.6(b), amounts on deposit in the Collection Account (or, in the case of
any amount described in Section 2.4(c), on deposit in the Special Payments
Account) shall be promptly distributed on each Regular Distribution Date (or, in
the case of any amount described in Section 2.4(c), on the Special Distribution
Date thereof) in the following order of priority and in accordance with the
information provided to the Subordination Agent pursuant to Section 3.1(a)
hereof:

                  first, such amount as shall be required to pay (i) all accrued
         and unpaid Liquidity Expenses owed to each Liquidity Provider and (ii)
         all accrued and unpaid Policy Expenses owed to the Policy Provider,
         shall be distributed to each Liquidity Provider and the Policy Provider
         pro rata on the basis of the amount of Liquidity Expenses and Policy
         Expenses owed to each Liquidity Provider and the Policy Provider;

                  second, such amount as shall be required to pay (i) the
         aggregate amount of interest accrued and unpaid on all Liquidity
         Obligations (at the rate, or in the amount, provided in the applicable
         Liquidity Facility) (determined after the application of the proceeds
         of any Excess Interest Policy Drawing or other payment by the Policy
         Provider to the Liquidity Provider in respect of any interest on
         Interest Drawings in accordance with the provisions of Section 2.6(c)),
         (ii) the aggregate amount of interest accrued and unpaid on any Policy
         Drawings made in respect of any shortfall attributable to a failure by
         the Liquidity Provider to honor any Interest Drawing (as more fully
         provided in the definition of "Policy Provider Obligations") and (iii)
         if the Policy Provider has elected pursuant to the proviso to Section
         2.6(c) to pay to each Liquidity Provider all outstanding Drawings and
         interest thereon owing to such Liquidity Provider under the applicable
         Liquidity Facility, the amount of such payment made to such Liquidity
         Provider attributable to interest accrued on such Drawings, shall be
         distributed to the Liquidity Providers and the Policy Provider, pro
         rata on the basis of the amount of such Liquidity

                                       33
<PAGE>   37

         Obligations owed to each Liquidity Provider and the amount of such
         Policy Provider Obligations payable under this clause "second" to the
         Policy Provider;

                  third, such amount as shall be required (i)(A) if any Cash
         Collateral Account had been previously funded as provided in Section
         3.6(f), to fund such Cash Collateral Account up to its Required Amount
         shall be deposited in such Cash Collateral Account, (B) if any
         Liquidity Facility shall become a Downgraded Facility or a Non-Extended
         Facility at a time when unreimbursed Interest Drawings under such
         Liquidity Facility have reduced the Available Amount thereunder to
         zero, to deposit into the related Cash Collateral Account an amount
         equal to such Cash Collateral Account's Required Amount shall be
         deposited in such Cash Collateral Account, and (C) if, with respect to
         any particular Liquidity Facility, neither subclause (i)(A) nor
         subclause (i)(B) of this clause "third" is applicable, to pay or
         reimburse the Liquidity Provider in respect of such Liquidity Facility
         in an amount equal to the amount of all Liquidity Obligations (net of
         any and all payments made by the Policy Provider to the Liquidity
         Provider with respect to the principal of any Interest Drawing under
         such Liquidity Facility) then due under such Liquidity Facility (other
         than amounts payable pursuant to clause "first" or "second" of this
         Section 3.2), and (ii) if the Policy Provider has elected pursuant to
         the proviso to Section 2.6(c) to pay to each Liquidity Provider all
         outstanding Drawings and interest thereon owing to such Liquidity
         Provider under the applicable Liquidity Facility, the amount of such
         payment made to such Liquidity Provider in respect of principal of
         Drawings under such Liquidity Facility, shall be distributed to such
         Liquidity Provider and the Policy Provider, pro rata on the basis of
         the amounts of all such deficiencies and/or unreimbursed Liquidity
         Obligations in respect of each Liquidity Provider and the amount of
         unreimbursed Policy Provider Obligations payable under this clause
         "third" to the Policy Provider;

                  fourth, if, with respect to any particular Liquidity Facility,
         any amounts are to be distributed pursuant to either subclause (i)(A)
         or (i)(B) of clause "third" above, then the Liquidity Provider with
         respect to such Liquidity Facility shall be paid the excess of (x) the
         aggregate outstanding amount of unreimbursed Advances (whether or not
         then due) under such Liquidity Facility over (y) the Required Amount
         for the relevant Class, pro rata on the basis of such amounts in
         respect of each Liquidity Provider;

                  fifth, such amount as shall be required to pay in full
         Expected Distributions to the holders of the Class G Certificates on
         such Distribution Date shall be distributed to the Class G Trustee;

                  sixth, such amount as shall be required to pay the Policy
         Provider all Policy Provider Obligations then due to the Policy
         Provider under the Policy Provider Agreement (other than amounts
         payable pursuant to clauses "first", "second" and "third" of this
         Section 3.2 and Excess Reimbursement Obligations) shall be paid to the
         Policy Provider;

                  seventh, such amount as shall be required to pay in full
         Expected Distributions to the holders of the Class C Certificates on
         such Distribution Date shall be distributed to the Class C Trustee;

                                       34
<PAGE>   38

                  eighth, such amount as shall be required to pay in full any
         Excess Reimbursement Obligations shall be distributed to the Policy
         Provider;

                  ninth, such amount as shall be required to pay in full the
         aggregate unpaid amount of fees and expenses payable as of such
         Distribution Date to the Subordination Agent and each Trustee pursuant
         to the terms of this Agreement and the Trust Agreements, as the case
         may be, shall be distributed to the Subordination Agent and such
         Trustee; and

                  tenth, the balance, if any, of any such amount remaining
         thereafter shall be held in the Collection Account for later
         distribution in accordance with this Article III.

                  SECTION 3.3. Distribution of Amounts on Deposit Following a
Triggering Event. Except as otherwise provided in Sections 3.1(f), 3.6(b) and
3.6(k) hereof, upon the occurrence of a Triggering Event and at all times
thereafter, all funds in the Collection Account or the Special Payments Account
shall be promptly distributed (and, in any event, on each Interest Payment Date)
by the Subordination Agent in the following order of priority:

                  first, such amount as shall be required to reimburse (i) the
         Subordination Agent for any reasonable out-of-pocket costs and expenses
         actually incurred by it (to the extent not previously reimbursed) in
         the protection of, or the realization of the value of, the Equipment
         Notes or any Collateral or Trust Indenture Estate, shall be applied by
         the Subordination Agent in reimbursement of such costs and expenses,
         (ii) each Trustee for any amounts of the nature described in clause (i)
         above actually incurred by it under the applicable Trust Agreement (to
         the extent not previously reimbursed), shall be distributed to such
         Trustee, (iii) the Policy Provider for any amounts of the nature
         described in clause (i) above actually incurred by it (to the extent
         not previously reimbursed), shall be distributed to the Policy
         Provider, and (iv) any Liquidity Provider, the Policy Provider or any
         Certificateholder for payments, if any, made by it to the Subordination
         Agent or any Trustee in respect of amounts described in clause (i)
         above, shall be distributed to such Liquidity Provider, the Policy
         Provider or to the applicable Trustee for the account of such
         Certificateholder, in each such case, pro rata on the basis of all
         amounts described in clauses (i) through (iv) above;

                  second, such amount remaining as shall be required to pay (i)
         all accrued and unpaid Liquidity Expenses owed to each Liquidity
         Provider and (ii) all accrued and unpaid Policy Expenses owed to the
         Policy Provider, shall be distributed to each Liquidity Provider and
         the Policy Provider pro rata on the basis of the amount of Liquidity
         Expenses and Policy Expenses owed to each Liquidity Provider and the
         Policy Provider;

                  third, such amount remaining as shall be required to pay (i)
         the aggregate amount of interest accrued and unpaid on all Liquidity
         Obligations (at the rate, or in the amount, provided in the applicable
         Liquidity Facility) (determined after the application of the proceeds
         of any Excess Interest Policy Drawing or other payment by the Policy
         Provider to the Liquidity Provider in accordance with the provisions of
         Section 2.6(c)), (ii) the aggregate amount of interest accrued and
         unpaid on any Policy Drawings made in respect

                                       35
<PAGE>   39

         of any shortfall attributable to a failure by the Liquidity Provider to
         honor any Interest Drawing (as more fully provided in the definition of
         "Policy Provider Obligations") and (iii) if the Policy Provider has
         elected pursuant to the proviso to Section 2.6(c) to pay to each
         Liquidity Provider all outstanding Drawings and interest thereon owing
         to such Liquidity Provider under the applicable Liquidity Facility, the
         amount of such payment made to such Liquidity Provider attributable to
         interest accrued on such Drawings, shall be distributed to the
         Liquidity Provider and the Policy Provider pro rata on the basis of the
         amount of such Liquidity Obligations owed to Liquidity Provider and the
         amount of such Policy Provider Obligations payable under this clause
         "third" to the Policy Provider;

                  fourth, such amount remaining as shall be required (I)(A) if
         any Cash Collateral Account had been previously funded as provided in
         Section 3.6(f), unless (i) a Performing Note Deficiency exists and a
         Liquidity Event of Default shall have occurred and be continuing with
         respect to the relevant Liquidity Facility or (ii) a Final Drawing
         shall have occurred with respect to such Liquidity Facility, to fund
         such Cash Collateral Account up to its Required Amount (less the amount
         of any repayments of Interest Drawings under such Liquidity Facility
         while subclause (A)(i) above is applicable) shall be deposited in such
         Cash Collateral Account, (B) if any Liquidity Facility shall become a
         Downgraded Facility or a Non-Extended Facility at a time when
         unreimbursed Interest Drawings under such Liquidity Facility have
         reduced the Available Amount thereunder to zero, unless (i) a
         Performing Note Deficiency exists and a Liquidity Event of Default
         shall have occurred and be continuing with respect to the relevant
         Liquidity Facility or (ii) a Final Drawing shall have occurred with
         respect to such Liquidity Facility, to deposit into the related Cash
         Collateral Account an amount equal to such Cash Collateral Account's
         Required Amount (less the amount of any repayments of Interest Drawings
         under such Liquidity Facility while subclause (B)(i) above is
         applicable) shall be deposited in such Cash Collateral Account, and (C)
         if, with respect to any particular Liquidity Facility, neither
         subclause (I)(A) nor subclause (I)(B) of this clause "fourth" are
         applicable, to pay in full the outstanding amount of all Liquidity
         Obligations (net of any and all payments made by the Policy Provider to
         the Liquidity Provider) then due under such Liquidity Facility (other
         than amounts payable pursuant to clause "second" or "third" of this
         Section 3.3) and (II) if the Policy Provider has elected pursuant to
         the proviso to Section 2.6(c) to pay to each Liquidity Provider all
         outstanding Drawings and interest thereon owing to such Liquidity
         Provider under the applicable Liquidity Facility, the amount of such
         payment made to such Liquidity Provider in respect of principal of
         Drawings under such Liquidity Facility, shall be distributed to such
         Liquidity Provider and the Policy Provider, pro rata on the basis of
         the amounts of all such deficiencies and/or unreimbursed Liquidity
         Obligations in respect of each Liquidity Provider and the amount of
         unreimbursed Policy Provider Obligations payable under this clause
         "fourth" to the Policy Provider;

                  fifth, if, with respect to any particular Liquidity Facility,
         any amounts are to be distributed pursuant to either subclause (I)(A)
         or (I)(B) of clause "fourth" above, then the Liquidity Provider with
         respect to such Liquidity Facility shall be paid the excess of (x) the
         aggregate outstanding amount of unreimbursed Advances (whether or not
         then due) under such Liquidity Facility over (y) the Required Amount
         for the relevant Class (less the amount of any repayments of Interest
         Drawings under such Liquidity Facility while

                                       36
<PAGE>   40

         subclause (I)(A)(i) or (I)(B)(i), as the case may be, of clause
         "fourth" above is applicable), pro rata on the basis of such amounts in
         respect of each Liquidity Provider;

                  sixth, such amount as shall be required to reimburse or pay
         (i) the Subordination Agent for any Tax (other than Unindemnified
         Taxes), expense, fee, charge or other loss incurred by or any other
         amount payable to the Subordination Agent in connection with the
         transactions contemplated hereby (to the extent not previously
         reimbursed), shall be applied by the Subordination Agent in
         reimbursement of such amount, (ii) each Trustee for any Tax (other than
         Unindemnified Taxes), expense, fee, charge, loss or any other amount
         payable to such Trustee under the applicable Trust Agreements (to the
         extent not previously reimbursed), shall be distributed to such
         Trustee, and (iii) each Certificateholder for payments, if any, made by
         it pursuant to Section 5.2 hereof in respect of amounts described in
         clause (i) above, shall be distributed to the applicable Trustee for
         the account of such Certificateholder, in each such case, pro rata on
         the basis of all amounts described in clauses (i) through (iii) above;

                  seventh, such amount remaining as shall be required to pay in
         full Adjusted Expected Distributions on the Class G Certificates shall
         be distributed to the Class G Trustee;

                  eighth, such amount as shall be required to pay to the Policy
         Provider all Policy Provider Obligations then due to the Policy
         Provider under the Policy Provider Agreement (other than amounts
         payable pursuant to clauses "first", "second", "third" and "fourth" of
         this Section 3.3 and Excess Reimbursement Obligations) shall be paid to
         the Policy Provider;

                  ninth, such amount remaining as shall be required to pay in
         full Adjusted Expected Distributions on the Class C Certificates shall
         be distributed to the Class C Trustee; and

                  tenth, such amount remaining as shall be required to pay in
full any Excess Reimbursement Obligations shall be distributed to the Policy
Provider.

                  SECTION 3.4. Other Payments. (a) Any payments received by the
Subordination Agent for which no provision as to the application thereof is made
in this Agreement shall be distributed by the Subordination Agent (i) in the
order of priority specified in Section 3.3 hereof and (ii) to the extent
received or realized at any time after the Final Distributions for each Class of
Certificates have been made, in the manner provided in clause "first" of Section
3.3 hereof.

                  (b) Except as otherwise provided in Section 3.3 hereof, if the
Subordination Agent receives any Scheduled Payment after the Scheduled Payment
Date relating thereto, but prior to such payment becoming an Overdue Scheduled
Payment, then the Subordination Agent shall deposit such Scheduled Payment in
the Collection Account and promptly distribute such Scheduled Payment in
accordance with the priority of distributions set forth in Section 3.2 hereof;
provided that, for the purposes of this Section 3.4(b) only, each reference in
clause "ninth" of Section 3.2 to "Distribution Date" shall be deemed to mean the
actual date of payment

                                       37
<PAGE>   41

of such Scheduled Payment and each reference in clause "fifth" or "seventh" of
Section 3.2 to "Distribution Date" shall be deemed to refer to such Scheduled
Payment Date.

                  SECTION 3.5. Payments to the Trustees, Liquidity Providers and
Policy Provider. Any amounts distributed hereunder to any Liquidity Provider or
the Policy Provider shall be paid to such Liquidity Provider or Policy Provider
by wire transfer of funds to the address such Liquidity Provider or Policy
Provider shall provide to the Subordination Agent. The Subordination Agent shall
provide a Written Notice of any such transfer to the applicable Liquidity
Provider or Policy Provider, as the case may be, at the time of such transfer.
Any amounts distributed hereunder by the Subordination Agent to any Trustee
which shall not be the same institution as the Subordination Agent shall be paid
to such Trustee by wire transfer funds at the address such Trustee shall provide
to the Subordination Agent.

                  SECTION 3.6. Liquidity Facilities. (a) Interest Drawings. If
on any Distribution Date, after giving effect to the subordination provisions of
this Agreement, the Subordination Agent shall not have sufficient funds for the
payment of any amounts due and owing in respect of accrued interest on the Class
G Certificates or the Class C Certificates (at the Stated Interest Rate for such
Class of Certificates), then, prior to 10:00 a.m. (New York City time) on such
Distribution Date, the Subordination Agent shall request a drawing (each such
drawing, an "Interest Drawing") under the Liquidity Facility with respect to
such Class of Certificates (and concurrently with the making of such request,
the Subordination Agent shall give notice to the Policy Provider of such
insufficiency of funds) in an amount equal to the lesser of (i) an amount
sufficient to pay the amount of such accrued interest (at the Stated Interest
Rate for such Class of Certificates) and (ii) the Available Amount under such
Liquidity Facility, and shall pay such amount to the Trustee with respect to
such Class of Certificates in payment of such accrued interest.

                  (b) Application of Interest Drawings. Notwithstanding anything
to the contrary contained in this Agreement, (i) all payments received by the
Subordination Agent in respect of an Interest Drawing under the Class G
Liquidity Facility and all amounts withdrawn by the Subordination Agent from the
Class G Cash Collateral Account, and payable in each case to the Class G Trustee
on behalf of the Class G Certificateholders, shall be promptly distributed to
the Class G Trustee, and (ii) all payments received by the Subordination Agent
in respect of an Interest Drawing under the Class C Liquidity Facility and all
amounts withdrawn by the Subordination Agent from the Class C Cash Collateral
Account, and payable in each case to the Class C Trustee on behalf of the Class
C Certificateholders, shall be promptly distributed to the Class C Trustee,
except that if after any Distribution Date the Subordination Agent shall receive
any amount in respect of an Interest Drawing under the Class G Liquidity
Facility or a withdrawal from the Class G Cash Collateral Account to pay Accrued
Class G Interest after such Accrued Class G Interest has been fully paid by a
Policy Drawing under the Policy, such amounts shall be paid directly to the
Policy Provider as reimbursement of such Policy Drawing rather than to the Class
G Trustee on behalf of the Class G Certificateholders and shall constitute an
Interest Drawing under the Class G Liquidity Facility or a withdrawal from the
Class G Cash Collateral Account, as the case may be, hereunder.

                  (c) Downgrade Drawings. If at any time the short-term
unsecured debt rating of any Liquidity Provider, issued by either Rating Agency
is lower than the applicable Threshold

                                       38
<PAGE>   42

Rating, within 30 days (or 10 days, if the Liquidity Provider is rated lower
than P-3 or A-3 by Moody's or Standard & Poor's, respectively) after receiving
notice of such downgrading (but not later than the expiration date of the
Liquidity Facility issued by the downgraded Liquidity Provider (the "Downgraded
Facility")), such Liquidity Provider or America West may arrange for a
Replacement Liquidity Provider to issue and deliver a Replacement Liquidity
Facility to the Subordination Agent. If a Downgraded Facility has not been
replaced in accordance with the terms of this paragraph, the Subordination Agent
shall, on such 30th day or such 10th day (or if such day is not a Business Day,
on the next succeeding Business Day) (or, if earlier, the expiration date of
such Downgraded Facility), request a drawing in accordance with and to the
extent permitted by such Downgraded Facility (such drawing, a "Downgrade
Drawing") of all available and undrawn amounts thereunder. Amounts drawn
pursuant to a Downgrade Drawing shall be maintained and invested as provided in
Section 3.6(f) hereof. The applicable Liquidity Provider may also arrange for a
Replacement Liquidity Provider to issue and deliver a Replacement Liquidity
Facility at any time after such Downgrade Drawing so long as such Downgrade
Drawing has not been reimbursed in full to such Liquidity Provider.

                  (d) Non-Extension Drawings. If any Liquidity Facility with
respect to any Class of Certificates is scheduled to expire on a date (the
"Stated Expiration Date") prior to the date that is 15 days after the Final
Legal Distribution Date for such Class of Certificates, then, no earlier than
the 45th day and no later than the 30th day prior to the then Stated Expiration
Date, the Subordination Agent shall request that such Liquidity Provider extend
the Stated Expiration Date for a period of 364 days after the Stated Expiration
Date (unless the obligations of such Liquidity Provider thereunder are earlier
terminated in accordance with such Liquidity Facility). Whether or not the
Liquidity Provider has received such request from the Subordination Agent, the
Liquidity Provider shall advise the Subordination Agent, no earlier than 30 days
and no later than 20 days prior to such Stated Expiration Date, whether, in its
sole discretion, it agrees to so extend the Stated Expiration Date. If on or
before such 20th day, the Liquidity Provider does not irrevocably and
unconditionally advise the Subordination Agent on or before the 20th day prior
to the Stated Expiration Date then in effect that such Stated Expiration Date
shall be so extended (and such Liquidity Facility shall not have been replaced
in accordance with Section 3.6(e) hereof), such Stated Expiration Date shall not
be extended and the Subordination Agent shall, on such 20th day (or as soon as
possible thereafter), in accordance with the terms of the expiring Liquidity
Facility (a "Non-Extended Facility"), request a drawing under such expiring
Liquidity Facility (such drawing, a "Non-Extension Drawing") of all available
and undrawn amounts thereunder. Amounts drawn pursuant to a Non-Extension
Drawing shall be maintained and invested in accordance with Section 3.6(f)
hereof.

                  (e) Issuance of Replacement Liquidity Facility. (i) At any
time, America West may, at its option, with cause or without cause, arrange for
a Replacement Liquidity Facility to replace any Liquidity Facility for any Class
of Certificates (including any Replacement Liquidity Facility provided pursuant
to Section 3.6(e)(ii) hereof); provided, however, that the initial Liquidity
Provider for any Liquidity Facility shall not be replaced by America West as a
Liquidity Provider with respect to such Liquidity Facility prior to the fifth
anniversary of the Closing Date unless (A) there shall have become due to such
initial Liquidity Provider, or such initial Liquidity Provider shall have
demanded, amounts pursuant to Section 3.01, 3.02 or 3.03 of any applicable
Liquidity Facility and the replacement of such initial Liquidity Provider would
reduce or eliminate the obligation to pay such amounts or America

                                       39
<PAGE>   43

West determines in good faith that there is a substantial likelihood that such
initial Liquidity Provider will have the right to claim any such amounts (unless
such initial Liquidity Provider waives, in writing, any right it may have to
claim such amounts), which determination shall be set forth in a certificate
delivered by America West to such initial Liquidity Provider setting forth the
basis for such determination and accompanied by an opinion of outside counsel
selected by America West and reasonably acceptable to such initial Liquidity
Provider verifying the legal conclusions, if any, of such certificate relating
to such basis, provided that, in the case of any likely claim for such amounts
based upon any proposed, or proposed change in, law, rule, regulation,
interpretation, directive, requirement, request or administrative practice, such
opinion may assume the adoption or promulgation of such proposed matter, (B) it
shall become unlawful or impossible for such initial Liquidity Provider (or its
Lending Office) to maintain or fund its LIBOR Advances as described in Section
3.10 of any Liquidity Facility, (C) any Liquidity Facility of such initial
Liquidity Provider shall become a Downgraded Facility or a Non-Extended Facility
or a Downgrade Drawing or a Non-Extension Drawing shall have occurred under any
Liquidity Facility of such initial Liquidity Provider or (D) such initial
Liquidity Provider shall have breached any of its payment (including, without
limitation, funding) obligations under any Liquidity Facility in respect of
which it is the Liquidity Provider. If such Replacement Liquidity Facility is
provided at any time after a Downgrade Drawing or Non-Extension Drawing has been
made, all funds on deposit in the relevant Cash Collateral Account will be
returned to the Liquidity Provider being replaced.

                  (ii) If any Liquidity Provider shall determine not to extend
         any of its Liquidity Facilities in accordance with Section 3.6(d), then
         such Liquidity Provider may, at its option, arrange for a Replacement
         Liquidity Facility to replace such Liquidity Facility during the period
         no earlier than 40 days and no later than 25 days prior to the then
         effective Stated Expiration Date of such Liquidity Facility. At any
         time after a Non-Extension Drawing has been made under any Liquidity
         Facility, the Liquidity Provider thereunder may, at its option, arrange
         for a Replacement Liquidity Facility to replace the Liquidity Facility
         under which such Non-Extension Drawing has been made.

                 (iii) No Replacement Liquidity Facility arranged by America
         West or a Liquidity Provider in accordance with clause (i) or (ii)
         above or pursuant to Section 3.6(c), respectively, shall become
         effective and no such Replacement Liquidity Facility shall be deemed a
         "Liquidity Facility" under the Operative Agreements, unless and until
         (A) each of the conditions referred to in sub-clauses (iv)(x) and (z)
         below shall have been satisfied and (B) in the case of a Replacement
         Liquidity Facility arranged by a Liquidity Provider under Section
         3.6(e)(ii) or pursuant to Section 3.6(c), such Replacement Liquidity
         Facility is acceptable to America West.

                  (iv) In connection with the issuance of each Replacement
         Liquidity Facility, the Subordination Agent shall (x) prior to the
         issuance of such Replacement Liquidity Facility, obtain written
         confirmation from each Rating Agency that such Replacement Liquidity
         Facility will not cause a reduction of any rating then in effect for
         any Class of Certificates by such Rating Agency (without regard to any
         downgrading of any rating of any Liquidity Provider being replaced
         pursuant to Section 3.6(c) hereof and without regard to the Policy)
         and, in the case of the Class G Liquidity Facility only, the written
         consent of the Policy Provider (which consent shall not be unreasonably
         withheld or

                                       40
<PAGE>   44

         delayed), (y) pay all Liquidity Obligations then owing to the replaced
         Liquidity Provider (which payment shall be made first from available
         funds in the applicable Cash Collateral Account as described in clause
         (vii) of Section 3.6(f) hereof, and thereafter from any other available
         source, including, without limitation, a drawing under the Replacement
         Liquidity Facility) and (z) cause the issuer of the Replacement
         Liquidity Facility to deliver the Replacement Liquidity Facility to the
         Subordination Agent, together with a legal opinion opining that such
         Replacement Liquidity Facility is an enforceable obligation of such
         Replacement Liquidity Provider.

                   (v) Upon satisfaction of the conditions set forth in clauses
         (iii) and (iv) of this Section 3.6(e) with respect to a Replacement
         Liquidity Facility, (w) the replaced Liquidity Facility shall
         terminate, (x) the Subordination Agent shall, if and to the extent so
         requested by America West or the Liquidity Provider being replaced,
         execute and deliver any certificate or other instrument required in
         order to terminate the replaced Liquidity Facility, shall surrender the
         replaced Liquidity Facility to the Liquidity Provider being replaced
         and shall execute and deliver the Replacement Liquidity Facility and
         any associated Fee Letter, (y) each of the parties hereto shall enter
         into any amendments to this Agreement necessary to give effect to (1)
         the replacement of the applicable Liquidity Provider with the
         applicable Replacement Liquidity Provider and (2) the replacement of
         the applicable Liquidity Facility with the applicable Replacement
         Liquidity Facility and (z) the applicable Replacement Liquidity
         Provider shall be deemed to be a Liquidity Provider with the rights and
         obligations of a Liquidity Provider hereunder and under the other
         Operative Agreements and such Replacement Liquidity Facility shall be
         deemed to be a Liquidity Facility hereunder and under the other
         Operative Agreements.

                  (f) Cash Collateral Accounts; Withdrawals; Investments. In the
event the Subordination Agent shall draw all available amounts under the Class G
Liquidity Facility or the Class C Liquidity Facility pursuant to Section 3.6(c),
3.6(d) or 3.6(i) hereof, or in the event amounts are to be deposited in the
Class G Cash Collateral Account or the Class C Cash Collateral Account pursuant
to subclause (A) or (B) of clause "third" of Section 2.4(b)(i), subclause (A) or
(B) of clause "third" of Section 3.2 or subclause (A) or (B) of clause "fourth"
of Section 3.3, amounts so drawn or to be deposited, as the case may be, shall
be deposited by the Subordination Agent in the Class G Cash Collateral Account
or the Class C Cash Collateral Account, respectively. All amounts on deposit in
each Cash Collateral Account shall be invested and reinvested in Eligible
Investments in accordance with Section 2.2(b) hereof.

                  On each Interest Payment Date (or, in the case of any Special
Distribution Date occurring as contemplated in Section 2.4(b) hereof prior to
the occurrence of a Triggering Event (a "Special Payment Withdrawal"), on such
Special Distribution Date), Investment Earnings on amounts on deposit in each
Cash Collateral Account (or, in the case of any Special Payment Withdrawal, a
fraction of such Investment Earnings equal to the Section 2.4(b) Fraction) shall
be deposited in the Collection Account (or, in the case of any Special Payment
Withdrawal, the Special Payments Account) and applied on such Interest Payment
Date (or Special Distribution Date, as the case may be) in accordance with
Section 2.4, 3.2 or 3.3 (as applicable). The Subordination Agent shall deliver a
written statement to America West, the Policy Provider and the Liquidity
Provider one day prior to each Interest Payment Date and Special Distribution
Date setting forth the aggregate amount of Investment Earnings held in the Cash
Collateral Accounts

                                       41
<PAGE>   45

as of such date. In addition, from and after the date funds are so deposited,
the Subordination Agent shall make withdrawals from such account as follows:

                  (i) on each Distribution Date, the Subordination Agent shall,
         to the extent it shall not have received funds to pay accrued and
         unpaid interest due and owing on the Class G Certificates (at the
         Stated Interest Rate for the Class G Certificates) from any other
         source, withdraw from the Class G Cash Collateral Account, and pay to
         the Class G Trustee, an amount equal to the lesser of (x) an amount
         necessary to pay accrued and unpaid interest (at the Stated Interest
         Rate for the Class G Certificates) on such Class G Certificates and (y)
         the amount on deposit in the Class G Cash Collateral Account;

                 (ii) on each Distribution Date, the Subordination Agent shall,
         to the extent it shall not have received funds to pay accrued and
         unpaid interest due and owing on the Class C Certificates (at the
         Stated Interest Rate for the Class C Certificates) from any other
         source, withdraw from the Class C Cash Collateral Account, and pay to
         the Class C Trustee, an amount equal to the lesser of (x) an amount
         necessary to pay accrued and unpaid interest (at the Stated Interest
         Rate for the Class C Certificates) on such Class C Certificates and (y)
         the amount on deposit in the Class C Cash Collateral Account;

                (iii) on each date on which the Pool Balance of the Class G
         Trust shall have been reduced by payments made to the Class G
         Certificateholders pursuant to Section 2.4, 3.2 or 3.3 hereof or
         pursuant to Section 2.03 of the Escrow and Paying Agent Agreement for
         such Class, the Subordination Agent shall withdraw from the Class G
         Cash Collateral Account such amount as is necessary so that, after
         giving effect to the reduction of the Pool Balance on such date and any
         transfer of Investment Earnings from such Cash Collateral Account to
         the Collection Account or the Special Payments Account on such date, an
         amount equal to the sum of the Required Amount (with respect to the
         Class G Liquidity Facility) plus (if on a Special Distribution Date not
         coinciding with an Interest Payment Date) Investment Earnings on
         deposit in such Cash Collateral Account will be on deposit in the Class
         G Cash Collateral Account and shall first, pay such withdrawn amount to
         the Class G Liquidity Provider until the Liquidity Obligations (with
         respect to the Class G Certificates) owing to such Liquidity Provider
         shall have been paid in full, and second, deposit any remaining
         withdrawn amount in the Collection Account;

                 (iv) on each date on which the Pool Balance of the Class C
         Trust shall have been reduced by payments made to the Class C
         Certificateholders pursuant to Section 2.4, 3.2 or 3.3 hereof or
         pursuant to Section 2.03 of the Escrow and Paying Agent Agreement for
         such Class, the Subordination Agent shall withdraw from the Class C
         Cash Collateral Account such amount as is necessary so that, after
         giving effect to the reduction of the Pool Balance on such date and any
         transfer of Investment Earnings from such Cash Collateral Account to
         the Collection Account or the Special Payments Account on such date, an
         amount equal to the sum of the Required Amount (with respect to the
         Class C Liquidity Facility) plus (if such date is a Special
         Distribution Date not coinciding with an Interest Payment Date)
         Investment Earnings on deposit in such Cash Collateral Account will be
         on deposit in the Class C Cash Collateral Account and shall first, pay
         such withdrawn amount to the Class C Liquidity Provider until the
         Liquidity Obligations (with respect to the Class C Certificates) owing
         to such Liquidity Provider shall have

                                       42
<PAGE>   46

         been paid in full, and second, deposit any remaining withdrawn amount
         in the Collection Account;

                  (v) if a Replacement Liquidity Facility for any Class of
         Certificates shall be delivered to the Subordination Agent following
         the date on which funds have been deposited into the Cash Collateral
         Account for such Class of Certificates, the Subordination Agent shall
         withdraw all amounts on deposit in such Cash Collateral Account and
         shall pay such amounts to the replaced Liquidity Provider until all
         Liquidity Obligations owed to such Person shall have been paid in full,
         and shall deposit any remaining amount in the Collection Account; and

                 (vi) following the payment of Final Distributions with respect
         to any Class of Certificates, on the date on which the Subordination
         Agent shall have been notified by the Liquidity Provider for such Class
         of Certificates that the Liquidity Obligations owed to such Liquidity
         Provider have been paid in full, the Subordination Agent shall withdraw
         all amounts on deposit in the Cash Collateral Account in respect of
         such Class of Certificates and shall deposit such amount in the
         Collection Account.

                  (g) Reinstatement. With respect to any Interest Drawing under
the Liquidity Facility for any Trust, upon the reimbursement by the
Subordination Agent of the applicable Liquidity Provider for all of the amount
of such Interest Drawing, together with any accrued interest thereon, the
Available Amount of such Liquidity Facility shall be reinstated by an amount
equal to the amount of such Interest Drawing so reimbursed to the applicable
Liquidity Provider but not to exceed the Stated Amount for such Liquidity
Facility; provided, however, that such Liquidity Facility shall not be so
reinstated in part or in full at any time if (x) both a Performing Note
Deficiency exists and a Liquidity Event of Default shall have occurred and be
continuing with respect to the relevant Liquidity Facility or (y) a Final
Drawing shall have occurred with respect to such Liquidity Facility. In the
event that, with respect to any particular Liquidity Facility, (i) funds are
withdrawn from any Cash Collateral Account pursuant to clause (i), (ii) or (iii)
of Section 3.6(f) hereof or (ii) such Liquidity Facility shall become a
Downgraded Facility or a Non-Extended Facility at a time when unreimbursed
Interest Drawings under such Liquidity Facility have reduced the Available
Amount thereunder to zero, then funds received by the Subordination Agent at any
time other than (x) any time when a Liquidity Event of Default shall have
occurred and be continuing with respect to such Liquidity Facility and a
Performing Note Deficiency exists or (y) any time after a Final Drawing shall
have occurred with respect to such Liquidity Facility shall be deposited in such
Cash Collateral Account as and to the extent provided in clause "third" of
Section 2.4(b), clause "third" of Section 3.2 or clause "fourth" of Section 3.3,
as applicable, and applied in accordance with Section 3.6(f) hereof.

                  (h) Reimbursement. The amount of each drawing under the
Liquidity Facilities shall be due and payable, together with interest thereon,
on the dates and at the rates, respectively, provided in the Liquidity
Facilities.

                  (i) Final Drawing. Upon receipt from a Liquidity Provider of a
Termination Notice with respect to any Liquidity Facility, the Subordination
Agent shall, not later than the date specified in such Termination Notice, in
accordance with the terms of such Liquidity Facility, request a drawing under
such Liquidity Facility of all available and undrawn amounts

                                       43
<PAGE>   47

thereunder (a "Final Drawing"). Amounts drawn pursuant to a Final Drawing shall
be maintained and invested in accordance with Section 3.6(f) hereof.

                  (j) Reduction of Stated Amount. Promptly following each date
on which the Required Amount of the Liquidity Facility for a Class of
Certificates is reduced as a result of a reduction in the Pool Balance with
respect to such Certificates, the Subordination Agent shall, if any such
Liquidity Facility provides for reductions of the Stated Amount of such
Liquidity Facility and if such reductions are not automatic, request such
Liquidity Provider for such Class of Certificates to reduce such Stated Amount
to an amount equal to the Required Amount with respect to such Liquidity
Facility (as calculated by the Subordination Agent after giving effect to such
payment). Each such request shall be made in accordance with the provisions of
the applicable Liquidity Facility.

                  (k) Relation to Subordination Provisions. Interest Drawings
under the Liquidity Facilities and withdrawals from the Cash Collateral
Accounts, in each case, in respect of interest on the Certificates of any Class,
will be distributed to the Trustee for such Class of Certificates for
distribution to Certificateholders of the related Class, notwithstanding
Sections 3.2, 3.3 and 3.6(h) hereof.

                  (l) Assignment of Liquidity Facility. The Subordination Agent
agrees not to consent to the assignment by any Liquidity Provider of any of its
rights or obligations under any Liquidity Facility or any interest therein,
unless (i) America West shall have consented to such assignment, such consent to
be within America West's sole discretion, (ii) each Rating Agency shall have
provided a Ratings Confirmation in respect of such assignment and (iii) in the
case of the Class G Liquidity Facility only, the Policy Provider shall have
consented to such assignment (which consent shall not be unreasonably withheld
or delayed), and, upon the satisfaction of (i), (ii) and (iii) (if applicable),
the Subordination Agent shall give such consent.

                  SECTION 3.7. The Policy. (a) Interest Drawings. If on any
Regular Distribution Date (other than the Final Legal Distribution Date) after
giving effect to the subordination provisions of this Agreement and to the
application of Prior Funds, the Subordination Agent does not then have
sufficient funds available for the payment of all amounts due and owing in
respect of accrued and unpaid interest on the Class G Certificates at the Stated
Interest Rate on the Pool Balance of the Class G Certificates and, without
duplication, accrued and unpaid interest on any Deposit relating to the Escrow
Receipts, in each case on such Distribution Date ("Accrued Class G Interest"),
then the Subordination Agent (i) prior to 1:00 p.m. (New York City time) on such
Distribution Date shall deliver a Notice for Payment, as provided in the Policy,
to the Policy Provider or its fiscal agent, requesting a Policy Drawing under
the Policy (for payment into the Policy Account) in an amount sufficient to
enable the Subordination Agent to pay such Accrued Class G Interest and (ii)
upon receipt shall pay such amount from the Policy Account to the Class G
Trustee in payment of such Accrued Class G Interest on such Distribution Date.

                  (b) Proceeds Deficiency Drawing. If on any Special
Distribution Date (which is not also an Election Distribution Date) established
by the Subordination Agent by reason of its receipt of a Special Payment
constituting the proceeds of any Series G Equipment Note or related Trust
Indenture Estate or Collateral, as the case may be, and if on such Special
Distribution Date after giving effect to the subordination provisions of this
Agreement and to the

                                       44
<PAGE>   48

application of Prior Funds, the Subordination Agent does not then have
sufficient funds available for a reduction in the outstanding Pool Balance of
the Class G Certificates by an amount equal to the outstanding principal amount
of such Equipment Note (determined immediately prior to the receipt of such
proceeds) plus accrued and unpaid interest on the amount of such reduction at
the Stated Interest Rate for the Class G Certificates for the period from the
immediately preceding Regular Distribution Date to such Special Distribution
Date, then the Subordination Agent (i) prior to 1:00 p.m. (New York City time)
on such Special Distribution Date shall deliver a Notice for Payment, as
provided in the Policy (for payment into the Policy Account) in an amount
sufficient to enable the Subordination Agent to pay the amount of such reduction
plus such accrued and unpaid interest and (ii) upon receipt shall pay such
amount from the Policy Account to the Class G Trustee in payment of such
reduction in the outstanding Pool Balance of the Class G Certificates plus such
accrued interest on such Special Distribution Date.

                  (c) No Proceeds Drawing. If the Subordination Agent has not
received a Special Payment constituting proceeds from the sale of that Equipment
Note or the related Trust Indenture Estate or Collateral (a "Disposition"), as
the case may be, during the 24-month period beginning on the last date on which
any payment was made in full on such Series G Equipment Note (the date of such
payment in full, the "Last Payment Date") as to which there has been a failure
to pay principal or that has been Accelerated subsequent to the Last Payment
Date, then on the first Business Day following the expiration of such 24-month
period, the Subordination Agent shall deliver a Notice for Payment, as provided
in the Policy, to the Policy Provider or its fiscal agent, requesting a Policy
Drawing under the Policy (for payment into the Policy Account) in an amount
equal to the then outstanding principal amount of such Equipment Note plus
accrued and unpaid interest thereon at the Stated Interest Rate for the Class G
Certificates from the immediately preceding Regular Distribution Date to the
below referred to Special Distribution Date. The Subordination Agent shall
promptly, but not less than 25 days prior to such Business Day, send to the
Class G Trustee and the Policy Provider a Written Notice setting forth the
non-receipt of any such Special Payment and establishing such Business Day as
the date for the distribution of the proceeds of such Policy Drawing, which date
shall constitute a Special Distribution Date. No later than 1:00 p.m. (New York
City time) on the specified Special Distribution Date the Subordination Agent
shall make the specified Policy Drawing and upon its receipt of the proceeds
thereof pay the amount thereof from the Policy Account to the Class G Trustee in
reduction of the outstanding Pool Balance of the Class G Certificates together
with such accrued and unpaid interest thereon. For the avoidance of doubt, after
the payment in full of such amount under this Section 3.7(c), the Subordination
Agent shall have no right to make any further Policy Drawings under this Section
3.7(c) in respect of any Disposition of or in respect of such Equipment Note
except for Preference Amounts as provided in Section 3.7(e).

                  Notwithstanding the foregoing, the Policy Provider has the
right at the end of any such 24-month period, so long as no Policy Provider
Default shall have occurred and be continuing to elect (the "Policy Provider
Election") instead (a) to pay on such Special Distribution Date an amount equal
to any shortfall in the scheduled principal and interest payable but not paid on
such Series G Equipment Note (without regard to the Acceleration thereof) during
such 24-month period (after giving effect to the application of funds received
from the Class G Liquidity Facility or the Class G Cash Collateral Account, in
each case attributable to such interest), (b) thereafter, on each Regular
Distribution Date until the establishment of an Election Distribution Date or a
Special Distribution Date referred to in clause (c)(i) below, to

                                       45
<PAGE>   49

permit drawings under the Policy for an amount equal to the scheduled principal
(without regard to any acceleration thereof) and interest payments at the Stated
Interest Rate for the Class G Certificates payable on such Equipment Note on the
related payment date and (c) (i) on any Business Day (which shall be a Special
Distribution Date) elected by the Policy Provider upon 20 days' Written Notice
to the Subordination Agent and the Class G Trustee to request the Subordination
Agent, or (ii) following either the occurrence and continuation of a Policy
Provider Default or the Disposition of or in respect of such Equipment Note, on
any Business Day (which shall be a Special Distribution Date) specified by the
Subordination Agent upon 20 days' Written Notice to the Class G Trustee (each
such Business Day in the case of clause (ii) an "Election Distribution Date") to
permit the Subordination Agent, in each case, to make a Policy Drawing for an
amount equal to the then outstanding principal balance of such Equipment Note
less any Policy Drawings previously paid by the Policy Provider in respect of
principal of such Equipment Note and accrued and unpaid interest on such amounts
at the Stated Interest Rate for the Class G Certificates from the immediately
preceding Regular Distribution Date to such Election Distribution Date or such
Special Distribution Date, as the case may be (after giving effect to the
application of funds, if any, received on such date from the Class G Liquidity
Facility or the Class G Cash Collateral Account attributable to such interest)
and without derogation of the Policy Provider's continuing obligations for all
previous Policy Drawings that remain unpaid in respect of such Equipment Note.
The Subordination Agent shall make each such drawing referred to in this
paragraph under the Policy (for payment into the Policy Account) no later than
1:00 p.m. (New York City time) on each such date and upon its receipt of the
proceeds thereof pay the amount thereof from the Policy Account to the Class G
Trustee in reduction of the outstanding Pool Balance of the Class G Certificates
together with such accrued and unpaid interest thereon.

                  In addition, regardless of whether or not the Policy Provider
makes a Policy Provider Election, the Policy Provider shall, at the end of such
24-month period, honor drawings by any Liquidity Provider in respect of amounts
referred to in clause (g) of the definition of "Deficiency Amount" contained in
the Policy (each, an "Excess Interest Policy Drawing"). Each Liquidity Provider
agrees to make such Excess Interest Policy Drawings and that the proceeds
thereof shall reduce pro tanto the Liquidity Obligations owing to it. Upon the
issuance of any Replacement Liquidity Facility pursuant to Section 3.6(e), the
Policy Provider agrees to promptly deliver to the Replacement Liquidity Provider
providing such Replacement Liquidity Facility a certified copy of the Policy,
provided that the Liquidity Provider being replaced returns its certified copy
of the Policy to the Policy Provider.

                  (d) Final Policy Drawing. If on the Final Legal Distribution
Date of the Class G Certificates after giving effect to the subordination
provisions of this Agreement and to the application of Prior Funds, the
Subordination Agent does not then have sufficient funds available on such date
for the payment in full of the Final Distributions (calculated as of such date
but excluding any accrued and unpaid premium) on the Class G Certificates then
the Subordination Agent shall (i) prior to 1:00 p.m. (New York City time) on
such date deliver a Notice for Payment, as provided in the Policy, to the Policy
Provider or its fiscal agent, requesting a Policy Drawing under the Policy (for
payment into the Policy Account) in an amount equal to the minimum amount
sufficient to enable the Subordination Agent to pay the Final Distributions
(calculated as of such date but excluding any accrued and unpaid premium) on the
Class G Certificates, and (ii) upon receipt pay such amount from the Policy
Account to the Class G Trustee in payment of such amount on such date.

                                       46
<PAGE>   50

                  (e) Avoidance Drawings. If at any time the Subordination Agent
shall have actual knowledge of the issuance of any Order, the Subordination
Agent shall promptly give notice thereof to each Trustee, the Liquidity
Providers and the Policy Provider. The Subordination Agent shall thereupon
calculate the relevant Preference Amounts resulting therefrom and shall
promptly: (a) send to the Class G Trustee a Written Notice of such amount and
(b) prior to the expiration of the Policy, deliver to the Policy Provider or its
fiscal agent a Notice of Avoided Payment, together with a copy of the
documentation required by the Policy with respect thereto, requesting a Policy
Drawing (for payment to the receiver, conservator, debtor-in-possession or
trustee in bankruptcy and/or to the Subordination Agent for deposit into the
Policy Account, as applicable) in an amount equal to the amount of relevant
Preference Amount. To the extent that any portion of such Preference Amount is
to be paid to the Subordination Agent, such Written Notice shall also set the
date for the distribution of such portion of the proceeds of such Policy Drawing
which date shall constitute a Special Distribution Date and shall be the earlier
of three Business Days after January 3, 2023 and the Business Day that
immediately follows the 25th day after the date of such Written Notice. No later
than 1:00 p.m. (New York City time) on the specified Special Distribution Date,
the Subordination Agent shall make the specified Policy Drawing upon its receipt
of the proceeds thereof and pay the amount thereof from the Policy Account to
the Class G Trustee in reinstatement of the Preference Amount.

                  (f) Application of Policy Drawings. Notwithstanding anything
to the contrary contained in this Agreement (including, without limitation,
Sections 2.4, 3.2 and 3.3 hereof), all payments received by the Subordination
Agent in respect of a Policy Drawing (including, without limitation, that
portion, if any, of the proceeds of a Policy Drawing for any Preference Amount
that is to be paid to the Subordination Agent and not to any receiver,
conservator, debtor-in-possession or trustee in bankruptcy as provided in the
Policy) shall be promptly paid from the Policy Account to the Class G Trustee
for distribution to the Class G Certificateholders or the holders of the Escrow
Receipts, as the case may be.

                  (g) Limitation to Outstanding Pool Balance. Notwithstanding
anything to the contrary in this Section 3.7, except as provided in Section
3.7(e), at no time shall the Subordination Agent make any Policy Drawing under
clause (b), (c) or (d) of this Section 3.7 in excess of the then outstanding
Pool Balance of the Class G Certificates and accrued and unpaid interest at the
Stated Interest Rate on the Class G Certificates. Nothing contained in this
Intercreditor Agreement shall alter or amend the liabilities, obligations,
requirements or procedures of the Policy Provider under the Policy and the
Policy Provider shall not be obligated to make payment except at the times and
in the amounts and under the circumstances expressly set forth in the Policy.

                  (h) Resubmission of Notice for Payment. If the Policy Provider
at any time informs the Subordination Agent in accordance with the Policy that a
Notice for Payment or Notice of Avoided Payment submitted by the Subordination
Agent does not meet the requirements of the Policy, the Subordination Agent
shall, as promptly as possible after being so informed, submit to the Policy
Provider an amended and revised Notice for Payment or Notice of Avoided Payment,
as the case may be, and shall pay to the Class G Trustee out of the Policy
Account the amount received pursuant to such amended or revised Notice for
Payment or Notice of Avoided Payment, as the case may be, when received.

                                       47
<PAGE>   51

                                   ARTICLE IV

                              EXERCISE OF REMEDIES

                  SECTION 4.1. Directions from the Controlling Party. (a) (i)
Following the occurrence and during the continuation of an Indenture Default
under any Indenture, the Controlling Party shall direct the Subordination Agent,
which in turn shall direct the Loan Trustee under such Indenture, in the
exercise of remedies available to the holders of the Equipment Notes issued
pursuant to such Indenture, including, without limitation, the ability to vote
all such Equipment Notes in favor of Accelerating such Equipment Notes in
accordance with the provisions of such Indenture. Subject to the Owner Trustees'
and the Owner Participants' rights, if any, set forth in the Indentures with
respect to Leased Aircraft to purchase the Equipment Notes and the provisions of
the next paragraph, if the Equipment Notes issued pursuant to any Indenture have
been Accelerated following an Indenture Default with respect thereto, the
Controlling Party may sell, assign, contract to sell or otherwise dispose of and
deliver all (but not less than all) of such Equipment Notes to any Person at
public or private sale, at any location at the option of the Controlling Party,
all upon such terms and conditions as it may reasonably deem advisable in
accordance with applicable law.

                (ii) Subject to the Owner Trustees' and the Owner Participants'
         rights, if any, set forth in the Indentures with respect to Leased
         Aircraft to purchase the Equipment Notes, and notwithstanding the
         foregoing, so long as any Certificates remain Outstanding, during the
         period ending on the date which is nine months after the earlier of (x)
         the Acceleration of the Equipment Notes issued pursuant to any
         Indenture or (y) the occurrence of an America West Bankruptcy Event,
         without the consent of each Trustee, (A) no Aircraft subject to the
         Lien of such Indenture or such Equipment Notes may be sold if the net
         proceeds from such sale would be less than the Minimum Sale Price for
         such Aircraft or such Equipment Notes, and (B) with respect to any
         Leased Aircraft, the amount and payment dates of rentals payable by
         America West under the Lease for such Aircraft may not be adjusted, if,
         as a result of such adjustment, the discounted present value of all
         such rentals would be less than 75% of the discounted present value of
         the rentals payable by America West under such Lease before giving
         effect to such adjustment, in each case, using the weighted average
         interest rate of the Equipment Notes issued pursuant to such Indenture
         as the discount rate.

               (iii) At the request of the Controlling Party, the Subordination
         Agent may from time to time during the continuance of an Indenture
         Default (and before the occurrence of a Triggering Event) commission
         LTV Appraisals with respect to the Aircraft subject to such Indenture.

                (iv) After a Triggering Event occurs and any Equipment Note
         becomes a Non-Performing Equipment Note, the Subordination Agent shall
         obtain Appraisals with respect to all of the Aircraft (the "LTV
         Appraisals") as soon as practicable and additional LTV Appraisals on or
         prior to each anniversary of the date of such initial LTV Appraisals;
         provided that if the Controlling Party reasonably objects to the
         appraised value of the Aircraft shown in such LTV Appraisals, the
         Controlling Party shall have the

                                       48
<PAGE>   52

         right to obtain or cause to be obtained substitute LTV Appraisals
         (including any LTV Appraisals based upon physical inspection of the
         Aircraft).

                  (b) The Controlling Party shall take such actions as it may
reasonably deem most effectual to complete the sale or other disposition of such
Aircraft or Equipment Notes. In addition, in lieu of any sale, assignment,
contract to sell or other disposition, the Controlling Party may maintain or
cause the Subordination Agent to maintain possession of such Equipment Notes and
continue to apply monies received in respect of such Equipment Notes in
accordance with Article III hereof. In addition, in lieu of such sale,
assignment, contract to sell or other disposition, or in lieu of such
maintenance of possession, the Controlling Party may, subject to the terms and
conditions of the related Indenture, instruct the Loan Trustee under such
Indenture to foreclose on the Lien on the related Aircraft or to take any other
remedial action permitted under such Indenture or under any applicable law.

                  SECTION 4.2. Remedies Cumulative. Each and every right, power
and remedy given to the Trustees, the Liquidity Providers, the Policy Provider,
the Controlling Party or the Subordination Agent 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, subject always to
the terms and conditions hereof, be exercised from time to time and as often and
in such order as may be deemed expedient by any Trustee, any Liquidity Provider,
the Policy Provider, the Controlling Party or the Subordination Agent, as
appropriate, 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 any Trustee, any Liquidity Provider, the Policy Provider, the Controlling
Party or the Subordination Agent in the exercise of any right, remedy or power
or in the pursuit of any remedy shall impair any such right, power or remedy or
be construed to be a waiver of any default or to be an acquiescence therein.

                  SECTION 4.3. Discontinuance of Proceedings. In case any party
to this Agreement (including the Controlling Party in such capacity) shall have
instituted any Proceeding to enforce any right, power or remedy under this
Agreement by foreclosure, entry or otherwise, and such Proceeding shall have
been discontinued or abandoned for any reason or shall have been determined
adversely to the Person instituting such Proceeding, then and in every such case
each such party shall, subject to any determination in such Proceeding, be
restored to its former position and rights hereunder, and all rights, remedies
and powers of such party shall continue as if no such Proceeding had been
instituted.

                  SECTION 4.4. Right of Certificateholders to Receive Payments
Not to Be Impaired. Anything in this Agreement to the contrary notwithstanding
but subject to each Trust Agreement, the right of any Certificateholder,
Liquidity Provider or the Policy Provider, respectively, to receive payments
hereunder (including without limitation pursuant to Section 2.4, 3.2 or 3.3
hereof) when due, or to institute suit for the enforcement of any such payment
on or after the applicable Distribution Date, shall not be impaired or affected
without the consent of such Certificateholder, Liquidity Provider or Policy
Provider, respectively.

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<PAGE>   53

                  SECTION 4.5. Undertaking for Costs. In any Proceeding for the
enforcement of any right or remedy under this Agreement or in any Proceeding
against any Controlling Party or the Subordination Agent for any action taken or
omitted by it as Controlling Party or Subordination Agent, as the case may be, a
court in its discretion may require the filing by any party litigant in the suit
of an undertaking to pay the costs of the suit, and the court in its discretion
may assess reasonable costs, including reasonable attorneys' fees and expenses,
against any party litigant in the suit, having due regard to the merits and good
faith of the claims or defenses made by the party litigant. The provisions of
this Section do not apply to a suit instituted by the Subordination Agent, a
Liquidity Provider, the Policy Provider or a Trustee or a suit by
Certificateholders holding more than 10% of the original principal amount of any
Class of Certificates.

                                    ARTICLE V

                       DUTIES OF THE SUBORDINATION AGENT;
                          AGREEMENTS OF TRUSTEES, ETC.

                  SECTION 5.1. Notice of Indenture Default or Triggering Event.
(a) In the event the Subordination Agent shall have actual knowledge of the
occurrence of an Indenture Default or a Triggering Event, as promptly as
practicable, and in any event within 10 days after obtaining knowledge thereof,
the Subordination Agent shall transmit by mail or courier to the Rating
Agencies, the Liquidity Providers, the Policy Provider and the Trustees notice
of such Indenture Default or Triggering Event, unless such Indenture Default or
Triggering Event shall have been cured or waived by the Controlling Party. For
all purposes of this Agreement, in the absence of actual knowledge on the part
of a Responsible Officer, the Subordination Agent shall not be deemed to have
knowledge of any Indenture Default or Triggering Event unless notified in
writing by one or more Trustees, one or more Liquidity Providers, or the Policy
Provider or one or more Certificateholders.

                  (b) Other Notices. The Subordination Agent will furnish to
each Liquidity Provider, the Policy Provider and each Trustee, promptly upon
receipt thereof, duplicates or copies of all reports, notices, requests,
demands, certificates, financial statements and other instruments furnished to
the Subordination Agent as registered holder of the Equipment Notes or otherwise
in its capacity as Subordination Agent to the extent the same shall not have
been otherwise directly distributed to such Liquidity Provider, Policy Provider
or Trustee, as applicable, pursuant to the express provision of any other
Operative Agreement.

                  SECTION 5.2. Indemnification. The Subordination Agent shall
not be required to take any action or refrain from taking any action under
Article IV hereof unless the Subordination Agent shall have been indemnified (to
the extent and in the manner reasonably satisfactory to the Subordination Agent)
against any liability, cost or expense (including counsel fees and expenses)
which may be incurred in connection therewith. The Subordination Agent shall not
be under any obligation to take any action under this Agreement and nothing
contained in this Agreement shall require the Subordination Agent to expend or
risk its own funds or otherwise incur any financial liability in the performance
of any of its duties hereunder or in the exercise 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

                                       50
<PAGE>   54

assured to it. The Subordination Agent shall not be required to take any action
under Article IV hereof, nor shall any other provision of this Agreement be
deemed to impose a duty on the Subordination Agent to take any action, if the
Subordination Agent shall have been advised by counsel that such action is
contrary to the terms hereof or is otherwise contrary to law.

                  SECTION 5.3. No Duties Except as Specified in Intercreditor
Agreement. The Subordination Agent shall not have any duty or obligation to take
or refrain from taking any action under, or in connection with, this Agreement,
except as expressly provided by the terms of this Agreement; and no implied
duties or obligations shall be read into this Agreement against the
Subordination Agent. The Subordination Agent agrees that it will, in its
individual capacity and at its own cost and expense (but without any right of
indemnity in respect of any such cost or expense under Section 7.1 hereof)
promptly take such action as may be necessary to duly discharge all Liens on any
of the Trust Accounts or any monies deposited therein which result from claims
against it in its individual capacity not related to its activities hereunder or
any other Operative Agreement.

                  SECTION 5.4. Notice from the Liquidity Providers and Trustees.
If any Liquidity Provider or any Trustee has notice of an Indenture Default or a
Triggering Event, such Person shall promptly give notice thereof to all of the
other parties hereto, provided, however, that no such Person shall have any
liability hereunder as a result of its failure to deliver any such notice.

                                   ARTICLE VI

                             THE SUBORDINATION AGENT

                  SECTION 6.1. Authorization; Acceptance of Trusts and Duties.
Each of the Class G Trustee and the Class C Trustee hereby designates and
appoints the Subordination Agent as the agent and trustee of such Trustee under
the applicable Liquidity Facility (and, in the case of the Class G Trustee, the
Policy Provider Agreement) and authorizes the Subordination Agent to enter into
the applicable Liquidity Facility (and, in the case of the Class G Trustee, the
Policy Provider Agreement) as agent and trustee for such Trustee. Each of the
Liquidity Providers, the Policy Provider and the Trustees hereby designates and
appoints the Subordination Agent as the Subordination Agent under this
Agreement. WTC hereby accepts the duties hereby created and applicable to it as
the Subordination Agent and agrees to perform the same but only upon the terms
of this Agreement and agrees to receive and disburse all monies received by it
in accordance with the terms hereof. The Subordination Agent shall not be
answerable or accountable under any circumstances, except (a) for its own
willful misconduct or gross negligence (or ordinary negligence in the handling
of funds), (b) as provided in Sections 2.2 and 5.3 hereof and (c) for
liabilities that may result from the inaccuracy of any representation or
warranty of the Subordination Agent made in its individual capacity in any
Operative Agreement. The Subordination Agent shall not be liable for any error
of judgment made in good faith by a Responsible Officer of the Subordination
Agent, unless it is proved that the Subordination Agent was negligent in
ascertaining the pertinent facts.

                                       51
<PAGE>   55

                  SECTION 6.2. Absence of Duties. The Subordination Agent shall
have no duty to see to any recording or filing of this Agreement or any other
document, or to see to the maintenance of any such recording or filing.

                  SECTION 6.3. No Representations or Warranties as to Documents.
The Subordination Agent in its individual capacity does not make nor shall be
deemed to have made any representation or warranty as to the validity, legality
or enforceability of this Agreement or any other Operative Agreement or as to
the correctness of any statement contained in any thereof, except for the
representations and warranties of the Subordination Agent, made in its
individual capacity, under any Operative Agreement to which it is a party. The
Certificateholders, the Trustees, the Liquidity Providers and the Policy
Provider make no representation or warranty hereunder whatsoever.

                  SECTION 6.4. No Segregation of Monies; No Interest. Any monies
paid to or retained by the Subordination Agent pursuant to any provision hereof
and not then required to be distributed to any Trustee, any Liquidity Provider
or the Policy Provider as provided in Articles II and III hereof or deposited
into one or more Trust Accounts need not be segregated in any manner except to
the extent required by such Articles II and III and by law, and the
Subordination Agent shall not (except as otherwise provided in Section 2.2
hereof) be liable for any interest thereon; provided, however, that any payments
received or applied hereunder by the Subordination Agent shall be accounted for
by the Subordination Agent so that any portion thereof paid or applied pursuant
hereto shall be identifiable as to the source thereof.

                  SECTION 6.5. Reliance; Agents; Advice of Counsel. The
Subordination Agent shall not incur liability to anyone in acting upon any
signature, instrument, notice, resolution, request, consent, order, certificate,
report, opinion, bond or other document or paper believed by it to be genuine
and believed by it to be signed by the proper party or parties. As to the Pool
Balance of any Trust as of any date, the Subordination Agent may for all
purposes hereof rely on a certificate signed by any Responsible Officer of the
applicable Trustee, and such certificate shall constitute full protection to the
Subordination Agent for any action taken or omitted to be taken by it in good
faith in reliance thereon. As to any fact or matter relating to the Liquidity
Providers, the Policy Provider or the Trustees the manner of ascertainment of
which is not specifically described herein, the Subordination Agent may for all
purposes hereof rely on a certificate, signed by any Responsible Officer of the
applicable Liquidity Provider, Policy Provider or Trustee, as the case may be,
as to such fact or matter, and such certificate shall constitute full protection
to the Subordination Agent for any action taken or omitted to be taken by it in
good faith in reliance thereon. The Subordination Agent shall assume, and shall
be fully protected in assuming, that each of the Liquidity Providers, the Policy
Provider and each of the Trustees are authorized to enter into this Agreement
and to take all action to be taken by them pursuant to the provisions hereof,
and shall not inquire into the authorization of each of the Liquidity Providers,
the Policy Provider and Trustees with respect thereto. In the administration of
the trusts hereunder, the Subordination Agent may execute any of the trusts or
powers hereof and perform its powers and duties hereunder directly or through
agents or attorneys and may consult with counsel, accountants and other skilled
persons to be selected and retained by it, and the Subordination Agent shall not
be liable for the acts or omissions of any agent appointed with due care or for
anything done, suffered or omitted in good faith by it in accordance with the
advice or written opinion of any such counsel, accountants or other skilled
persons.

                                       52
<PAGE>   56

                  SECTION 6.6. Capacity in Which Acting. The Subordination Agent
acts hereunder solely as agent and trustee herein and not in its individual
capacity, except as otherwise expressly provided in the Operative Agreements.

                  SECTION 6.7. Compensation. The Subordination Agent shall be
entitled to reasonable compensation, including reimbursement for reasonable
expenses and disbursements, except with respect to any Unindemnified Taxes
incurred by the Subordination Agent in connection with the transactions
contemplated by this Agreement for all services rendered hereunder and shall
have a priority claim to the extent set forth in Article III hereof on all
monies collected hereunder for the payment of such compensation (other than any
Unindemnified Taxes), to the extent that such compensation shall not be paid by
others. The Subordination Agent agrees that it shall have no right against any
Trustee, Liquidity Provider or the Policy Provider for any fee as compensation
for its services as agent under this Agreement. The provisions of this Section
6.7 shall survive the termination of this Agreement.

                  SECTION 6.8. May Become Certificateholder. The institution
acting as Subordination Agent hereunder may become a Certificateholder and have
all rights and benefits of a Certificateholder to the same extent as if it were
not the institution acting as the Subordination Agent.

                  SECTION 6.9. Subordination Agent Required; Eligibility. There
shall at all times be a Subordination Agent hereunder which shall be a
corporation organized and doing business under the laws of the United States of
America or of any State or the District of Columbia having a combined capital
and surplus of at least $100,000,000 (or 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
of America, any State thereof or of the District of Columbia and having a
combined capital and surplus of at least $100,000,000), if there is such an
institution willing and able to perform the duties of the Subordination Agent
hereunder upon reasonable or customary terms. Such corporation shall be a
citizen of the United States and shall be authorized under the laws of the
United States or any State thereof or of the District of Columbia to exercise
corporate trust powers and shall be subject to supervision or examination by
federal, state or District of Columbia authorities. If such corporation
publishes reports of condition at least annually, pursuant to law or to the
requirements of any of the aforesaid supervising or examining authorities, then,
for the purposes of this Section 6.9, 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 condition so published.

                  In case at any time the Subordination Agent shall cease to be
eligible in accordance with the provisions of this Section, the Subordination
Agent shall resign immediately in the manner and with the effect specified in
Section 8.1.

                  SECTION 6.10. Money to Be Held in Trust. All Equipment Notes,
monies and other property deposited with or held by the Subordination Agent
pursuant to this Agreement shall be held in trust for the benefit of the parties
entitled to such Equipment Notes, monies and other property. All such Equipment
Notes, monies or other property shall be held in the Trust Department of the
institution acting as Subordination Agent hereunder.

                                       53
<PAGE>   57

                                   ARTICLE VII

                     INDEMNIFICATION OF SUBORDINATION AGENT

                  SECTION 7.1. Scope of Indemnification. The Subordination Agent
shall be indemnified hereunder to the extent and in the manner described in
Section 9.1 of the Participation Agreements and Section 6 of the Note Purchase
Agreement. The indemnities contained in such Sections of such agreements shall
survive the resignation or removal of the Subordination Agent and the
termination of this Agreement.

                                  ARTICLE VIII

                          SUCCESSOR SUBORDINATION AGENT

                  SECTION 8.1. Replacement of Subordination Agent; Appointment
of Successor. The Subordination Agent may resign at any time by so notifying
each Trustee, each Liquidity Provider and the Policy Provider. The Controlling
Party may remove the Subordination Agent for cause by so notifying the
Subordination Agent and may appoint a successor Subordination Agent. The
Controlling Party shall remove the Subordination Agent if:

                  (1) the Subordination Agent fails to comply with Section 6.9
         hereof;

                  (2) the Subordination Agent is adjudged bankrupt or insolvent;

                  (3) a receiver or other public officer takes charge of the
         Subordination Agent or its property; or

                  (4) the Subordination Agent otherwise becomes incapable of
         acting.

                  If the Subordination Agent resigns or is removed or if a
vacancy exists in the office of Subordination Agent for any reason (the
Subordination Agent in such event being referred to herein as the retiring
Subordination Agent), the Controlling Party shall promptly appoint a successor
Subordination Agent.

                  A successor Subordination Agent shall deliver (x) a written
acceptance of its appointment as Subordination Agent hereunder to the retiring
Subordination Agent and (y) a written assumption of its obligations hereunder
and under each Liquidity Facility and the Policy Provider Agreement to each
party hereto, upon which the resignation or removal of the retiring
Subordination Agent shall become effective, and the successor Subordination
Agent shall have all the rights, powers and duties of the Subordination Agent
under this Agreement. The successor Subordination Agent shall mail a notice of
its succession to the Liquidity Providers, the Policy Provider and the Trustees.
The retiring Subordination Agent shall promptly transfer its rights under each
of the Liquidity Facilities and all of the property held by it as Subordination
Agent to the successor Subordination Agent.

                                       54
<PAGE>   58

                  If a successor Subordination Agent does not take office within
60 days after the retiring Subordination Agent resigns or is removed, the
retiring Subordination Agent or one or more of the Trustees may petition any
court of competent jurisdiction for the appointment of a successor Subordination
Agent.

                  If the Subordination Agent fails to comply with Section 6.9
hereof (to the extent applicable), one or more of the Trustees, one or more of
the Liquidity Providers or the Policy Provider may petition any court of
competent jurisdiction for the removal of the Subordination Agent and the
appointment of a successor Subordination Agent.

                  Notwithstanding the foregoing, no resignation or removal of
the Subordination Agent shall be effective unless and until a successor has been
appointed. No appointment of a successor Subordination Agent shall be effective
unless and until the Rating Agencies shall have delivered a Ratings
Confirmation.

                                   ARTICLE IX

                           SUPPLEMENTS AND AMENDMENTS

                  SECTION 9.1. Amendments, Waivers, etc. (a) This Agreement may
not be supplemented, amended or modified without the consent of each Trustee
(acting, except in the case of any amendment pursuant to Section 3.6(e)(v)(y)
hereof with respect to any Replacement Liquidity Facility, or any amendment
contemplated by the last sentence of this Section 9.1(a) or 9.1(c), with the
consent of holders of Certificates of the related Class evidencing interests in
the related Trust aggregating not less than a majority in interest in such Trust
or as otherwise authorized pursuant to the relevant Trust Agreement), the
Subordination Agent, each Liquidity Provider and the Policy Provider; provided,
however, that this Agreement may be supplemented, amended or modified without
the consent of (x) any Trustee if such supplement, amendment or modification (i)
is in accordance with Section 9.1(c) hereof or (ii) cures an ambiguity or
inconsistency or does not materially adversely affect such Trustee or the
holders of the related Class of Certificates and (y) any Liquidity Provider or
the Policy Provider if such supplement, amendment or modification is in
accordance with Section 9.1(c) hereof; provided further, however, that, if such
supplement, amendment or modification (A) would (x) directly or indirectly
modify or supersede, or otherwise conflict with, Section 2.2(b), Section 3.6(e),
Section 3.6(f), Section 3.6(l), the last sentence of this Section 9.1(a),
Section 9.1(c), the second sentence of Section 10.6 or this proviso
(collectively, the "America West Provisions") or (y) otherwise adversely affect
the interests of a potential Replacement Liquidity Provider or of America West
with respect to its ability to replace any Liquidity Facility or with respect to
its payment obligations under any Operative Agreement or (B) is made pursuant to
the last sentence of this Section 9.1(a) or pursuant to Section 9.1(c), then
such supplement, amendment or modification shall not be effective without the
additional written consent of America West. Notwithstanding the foregoing,
without the consent of each Certificateholder and each Liquidity Provider and
the Policy Provider, no supplement, amendment or modification of this Agreement
may (i) reduce the percentage of the interest in any Trust evidenced by the
Certificates issued by such Trust necessary to consent to modify or amend any
provision of this Agreement or to waive compliance therewith or (ii) except as
provided in Section 9.1(c) or the last sentence of this Section 9.1(a), modify
Section 2.4, 3.2 or 3.3 hereof, relating to the distribution of monies

                                       55
<PAGE>   59

received by the Subordination Agent hereunder from the Equipment Notes or
pursuant to the Liquidity Facilities or the Policy. Nothing contained in this
Section shall require the consent of a Trustee at any time following the payment
of Final Distributions with respect to the related Class of Certificates. If the
Replacement Liquidity Facility for any Liquidity Facility in accordance with
Section 3.6(e) hereof is to be comprised of more than one instrument as
contemplated by the definition of the term "Replacement Liquidity Facility",
then each of the parties hereto agrees to amend this Agreement to incorporate
appropriate mechanics for multiple Liquidity Facilities for an individual Trust.

                  (b) In the event that the Subordination Agent, as the
registered holder of any Equipment Notes, receives a request for its consent to
any amendment, modification, consent or waiver under such Equipment Notes, the
Indenture pursuant to which such Equipment Notes were issued, or the related
Lease, Participation Agreement or other related document, (i) if no Indenture
Default shall have occurred and be continuing with respect to such Indenture,
the Subordination Agent shall request directions with respect to each Series of
such Equipment Notes from the Trustee of the Trust which holds such series of
such Equipment Notes and shall vote or consent in accordance with the directions
of such Trustee except that so long as the Final Distribution on the Class G
Certificates has not been made or any Policy Provider Obligations remain
outstanding and no Policy Provider Default shall have occurred and be
continuing, the Subordination Agent shall request directions from the Policy
Provider rather than the Class G Trustee with respect to the Series G Equipment
Notes held in the Class G Trust, and (ii) if any Indenture Default (which, in
the case of any Indenture pertaining to a Leased Aircraft, has not been cured by
the applicable Owner Trustee or the applicable Owner Participant, if applicable,
pursuant to Section 4.03 of such Indenture) shall have occurred and be
continuing with respect to such Indenture, the Subordination Agent will exercise
its voting rights as directed by the Controlling Party, subject to Sections 4.1
and 4.4 hereof; provided that no such amendment, modification or waiver shall,
without the consent of each Liquidity Provider and the Policy Provider, reduce
the amount of rent, supplemental rent or stipulated loss values payable by
America West under any Lease or reduce the amount of principal or interest
payable by America West under any Equipment Note issued under any Indenture in
respect of an Owned Aircraft.

                  (c) If with respect to any Aircraft Class D Certificates are
issued, this Agreement shall be amended by written agreement of America West and
the Subordination Agent to provide for the subordination of such Class D
Certificates to the Class G Certificates and the Class C Certificates
substantially in the same manner as the Class C Certificates are subordinated
hereunder to the Class G Certificates. No such amendment shall materially
adversely affect any Trustee, the Liquidity Provider, the Policy Provider or the
holders of any Class of Certificates. The amendment to this Agreement to give
effect to the issuance of any Class D Certificates shall include, without
limitation:

                  (i) the trustee of the Class D Trust shall be added as a party
         to this Agreement;

                 (ii) the definitions of "Cash Collateral Account,"
         "Certificate," "Class," "Equipment Notes," "Final Legal Distribution
         Date," "Liquidity Facilities," "Liquidity Provider," "LTV Ratio,"
         "Stated Interest Rate," "Trust," "Trust Agreement," "Controlling

                                       56
<PAGE>   60

         Party" shall be revised, as appropriate, to reflect the issuance of the
         Class D Certificates (and the subordination thereof); and

                (iii) the provisions of this Agreement governing payments with
         respect to Certificates and related notices, including, without
         limitation, Sections 2.4, 3.1, 3.2, 3.3 and 3.6(e), shall be revised to
         provide for distributions on the Class D Certificates after payment of
         all relevant distributions on the Class C Certificates.

                  If, with respect to any Aircraft, Series D Equipment Notes are
issued to any Person other than the Class D Trust, this Agreement shall be
amended by written agreement of America West and the Subordination Agent to (i)
provide for each holder of a Series D Equipment Note to be bound by the
provisions of Section 2.6(a) hereof so that the Controlling Party shall, among
other things, be entitled to direct the Loan Trustee as provided therein (and
such Series D Equipment Notes shall make effective provision therefor so as to
bind each holder thereof to such provisions of Section 2.6(a) hereof) and (ii)
to revise the definitions of "Controlling Party" and "Equipment Notes", as
appropriate, to reflect the issuance of the Series D Equipment Notes (and the
prior rights, as against the holders of such Series D Equipment Notes, of the
Policy Provider, Class G Trustee and the Class C Trustee to be such "Controlling
Party"). No such amendment shall materially adversely affect any Trustee,
Liquidity Provider or the Policy Provider.

                  SECTION 9.2. Subordination Agent Protected. If, in the
reasonable opinion of the institution acting as the Subordination Agent
hereunder, any document required to be executed pursuant to the terms of Section
9.1 adversely affects any right, duty, immunity or indemnity with respect to it
under this Agreement, any Liquidity Facility or the Policy, the Subordination
Agent may in its discretion decline to execute such document.

                  SECTION 9.3. Effect of Supplemental Agreements. Upon the
execution of any amendment, consent or supplement hereto pursuant to the
provisions hereof, this Agreement shall be and be deemed to be and shall be
modified and amended in accordance therewith and the respective rights,
limitations of rights, obligations, duties and immunities under this Agreement
of the parties hereto and beneficiaries hereof shall thereafter be determined,
exercised and enforced hereunder subject in all respects to such modifications
and amendments, and all the terms and conditions of any such supplemental
agreement shall be and be deemed to be and shall be part of the terms and
conditions of this Agreement for any and all purposes. In executing or accepting
any supplemental agreement permitted by this Article IX, the Subordination Agent
shall be entitled to receive at its cost, and shall be fully protected in
relying upon, an opinion of counsel stating that the execution of such
supplemental agreement is authorized or permitted by this Agreement.

                  SECTION 9.4. Notice to Rating Agencies. Promptly following its
receipt of each amendment, consent, modification, supplement or waiver
contemplated by this Article IX, the Subordination Agent shall send a copy
thereof to each Rating Agency.

                                       57
<PAGE>   61

                                    ARTICLE X

                                  MISCELLANEOUS

                  SECTION 10.1. Termination of Intercreditor Agreement.
Following payment of Final Distributions with respect to each Class of
Certificates and the payment in full of all Liquidity Obligations to the
Liquidity Providers and all Policy Provider Obligations to the Policy Provider
and provided that there shall then be no other amounts due to the
Certificateholders, the Trustees, the Liquidity Providers, the Policy Provider
and the Subordination Agent hereunder or under the Trust Agreements, and that
the commitment of the (i) Liquidity Providers under the Liquidity Facilities and
(ii) Policy Provider under the Policy shall have expired or been terminated,
this Agreement and the trusts created hereby shall terminate and this Agreement
shall be of no further force or effect. Except as aforesaid or otherwise
provided, this Agreement and the trusts created hereby shall continue in full
force and effect in accordance with the terms hereof.

                  SECTION 10.2. Intercreditor Agreement for Benefit of Trustees,
Liquidity Providers, the Policy Provider and Subordination Agent. Subject to the
second sentence of Section 10.6 and the provisions of Sections 4.4 and 9.1,
nothing in this Agreement, whether express or implied, shall be construed to
give to any Person other than the Trustees, the Liquidity Providers, the Policy
Provider and the Subordination Agent any legal or equitable right, remedy or
claim under or in respect of this Agreement.

                  SECTION 10.3. Notices. Unless otherwise expressly specified or
permitted by the terms hereof, all notices, requests, demands, authorizations,
directions, consents, waivers or documents provided or permitted by this
Agreement to be made, given, furnished or filed shall be in writing, mailed by
certified mail, postage prepaid, or by confirmed telecopy and

                  (i)      if to the Subordination Agent, addressed to at its
                           office at:

                           WILMINGTON TRUST COMPANY
                           Rodney Square North
                           1100 N. Market Street
                           Wilmington, DE  19890-0001

                           Attention:  Corporate Trust Administration
                           Telecopy:  (302) 651-8882

                 (ii)      if to any Trustee, addressed to it at its office at:

                           WILMINGTON TRUST COMPANY
                           Rodney Square North
                           1100 N. Market Street
                           Wilmington, DE  19890-0001

                           Attention:  Corporate Trust Administration
                           Telecopy:  (302) 651-8882

                                       58
<PAGE>   62

                  (iii)    if to the initial Liquidity Provider, addressed to it
                           at its office at:

                           Citibank, N.A.
                           399 Park Avenue
                           New York, New York 10043

                           Attention:  Aviation/Retail
                           Telecopy:  (212) 793-3734

                  with a copy to:

                           Citicorp North America Inc.
                           787 West 5th Street, 29th Floor
                           Los Angeles, California 90071

                           Attention:  Walter Larsen
                           Telecopy:  (213) 624-9765

                  (iv)     if to the initial Policy Provider, addressed to it at
                           its office at:

                           Ambac Assurance Corporation
                           One State Street Plaza
                           New York, New York  10004
                           Attention: Surveillance Department
                           Telephone: (212) 668-0340
                           Telecopy: (212) 363-1459

                           with a copy to:
                           Attention: General Counsel - Urgent
                           Telecopy: (212) 208-3558

Whenever any notice in writing is required to be given by any Trustee, Liquidity
Provider, Policy Provider or the Subordination Agent to any of the other of
them, such notice shall be deemed given and such requirement satisfied when such
notice is received unless received outside of business hours, in which case on
the open of business on the next Business Day. A copy of any notice given by the
Trustee, the Liquidity Provider or the Subordination Agent shall be given to the
Policy Provider; provided that the failure to do so shall not impair the
validity of any such notice or the Policy Provider's obligations hereunder and
under the Policy. Any party hereto may change the address to which notices to
such party will be sent by giving notice of such change to the other parties to
this Agreement.

                  SECTION 10.4. Severability. Any provision of this Agreement
which is prohibited or unenforceable in any jurisdiction shall, as to such
jurisdiction, be ineffective to the extent of such prohibition or
unenforceability without invalidating the remaining provisions

                                       59
<PAGE>   63

hereof, and any such prohibition or unenforceability in any jurisdiction shall
not invalidate or render unenforceable such provision in any other jurisdiction.

                  SECTION 10.5. No Oral Modifications or Continuing Waivers. No
terms or provisions of this Agreement may be changed, waived, discharged or
terminated orally, but only by an instrument in writing signed by the party or
other Person against whom enforcement of the change, waiver, discharge or
termination is sought and any other party or other Person whose consent is
required pursuant to this Agreement and any waiver of the terms hereof shall be
effective only in the specific instance and for the specific purpose given.

                  SECTION 10.6. Successors and Assigns. All covenants and
agreements contained herein shall be binding upon, and inure to the benefit of,
each of the parties hereto and the successors and assigns of each, all as herein
provided. In addition, the America West Provisions shall inure to the benefit of
America West and its successors and assigns, and (without limitation of the
foregoing) America West is hereby constituted, and agreed to be, an express
third party beneficiary of the America West Provisions. Upon the occurrence of
the Transfers contemplated by the Assignment and Assumption Agreements, the
Trustee of each Class shall (without any further act) be deemed to have
transferred all of its rights, title and interest in and to this Agreement to
the trustee of the Successor Trust of the same Class and, thereafter, the
trustee of each Successor Trust shall be deemed to be the "Trustee" of such
Successor Trust with the rights and obligations of a "Trustee" hereunder and
under the other Operative Agreements and each reference to a Trust of any Class
herein shall be deemed a reference to the Successor Trust of such Class.

                  SECTION 10.7. Headings. The headings of the various Articles
and Sections herein and in the table of contents hereto are for convenience of
reference only and shall not define or limit any of the terms or provisions
hereof.

                  SECTION 10.8. Counterpart Form. This Agreement may be executed
by the parties hereto in separate counterparts, each of which when so executed
and delivered shall be an original, but all such counterparts shall together
constitute but one and the same agreement.

                  SECTION 10.9. Subordination. (a) As between the Liquidity
Providers and the Policy Provider, on the one hand, and the Trustees and the
Certificateholders, on the other hand, and as among the Trustees, this Agreement
shall be a subordination agreement for purposes of Section 510 of the United
States Bankruptcy Code, as amended from time to time.

                  (b) Notwithstanding the provisions of this Agreement, if prior
to the payment in full to the (i) Liquidity Providers of all Liquidity
Obligations then due and payable and (ii) Policy Provider of all Policy Provider
Obligations then due and payable, any party hereto shall have received any
payment or distribution in respect of Equipment Notes or any other amount under
the Indentures or other Operative Agreements which, had the subordination
provisions of this Agreement been properly applied to such payment, distribution
or other amount, would not have been distributed to such Person, then such
payment, distribution or other amount shall be received and held in trust by
such Person and paid over or delivered to the Subordination Agent for
application as provided herein.

                                       60
<PAGE>   64

                  (c) If any Trustee, any Liquidity Provider, the Policy
Provider or the Subordination Agent receives any payment in respect of any
obligations owing hereunder (or, in the case of the Liquidity Providers or the
Policy Provider, in respect of the Liquidity Obligations or the Policy Provider
Obligations, as the case may be), which is subsequently invalidated, declared
preferential, set aside and/or required to be repaid to a trustee, receiver or
other party, then, to the extent of such payment, such obligations (or, in the
case of the Liquidity Providers or the Policy Provider, such Liquidity
Obligations or Policy Provider Obligations, as the case may be) intended to be
satisfied shall be revived and continue in full force and effect as if such
payment had not been received.

                  (d) The Trustees (on behalf of themselves and the holders of
Certificates), the Liquidity Providers, the Policy Provider and the
Subordination Agent confirm that the payment priorities specified in Sections
2.4, 3.2 and 3.3 shall apply in all circumstances, notwithstanding the fact that
the obligations owed to the Trustees and the holders of Certificates are secured
by certain assets and the Liquidity Obligations and Policy Provider Obligations
may not be so secured. The Trustees expressly agree (on behalf of themselves and
the holders of Certificates) not to assert priority over the holders of
Liquidity Obligations or Policy Provider Obligations (except as specifically set
forth in Sections 2.4, 3.2 or 3.3) due to their status as secured creditors in
any bankruptcy, insolvency or other legal proceeding.

                  (e) Each of the Trustees (on behalf of themselves and the
holders of Certificates), the Liquidity Providers, the Policy Provider and the
Subordination Agent may take any of the following actions without impairing its
rights under this Agreement:

                     (i) obtain a Lien on any property to secure any amounts
         owing to it hereunder, including, in the case of the Liquidity
         Providers and the Policy Provider, the Liquidity Obligations or the
         Policy Provider Obligations, as the case may be,

                    (ii) obtain the primary or secondary obligation of any other
         obligor with respect to any amounts owing to it hereunder, including,
         in the case of the Liquidity Providers and the Policy Provider, any of
         the Liquidity Obligations or the Policy Provider Obligations, as the
         case may be,

                   (iii) renew, extend, increase, alter or exchange any amounts
         owing to it hereunder, including, in the case of the Liquidity
         Providers and the Policy Provider, any of the Liquidity Obligations or
         the Policy Provider Obligations, as the case may be, or release or
         compromise any obligation of any obligor with respect thereto,

                    (iv) refrain from exercising any right or remedy, or delay
         in exercising such right or remedy, which it may have, or

                     (v) take any other action which might discharge a
         subordinated party or a surety under applicable law;

provided, however, that the taking of any such actions by any of the Trustees,
the Liquidity Providers, the Policy Provider or the Subordination Agent shall
not prejudice the rights or adversely affect the obligations of any other party
under this Agreement.

                                       61
<PAGE>   65

                  SECTION 10.10. Governing Law. THIS AGREEMENT SHALL IN ALL
RESPECTS BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAW OF THE STATE
OF NEW YORK, INCLUDING ALL MATTERS OF CONSTRUCTION, VALIDITY AND PERFORMANCE.

                  SECTION 10.11. Submission to Jurisdiction; Waiver of Jury
Trial; Waiver of Immunity. (a) Each of the parties hereto hereby irrevocably and
unconditionally:

                   (i) submits for itself and its property in any legal action
         or proceeding relating to this Agreement or any other Operative
         Agreement, or for recognition and enforcement of any judgment in
         respect hereof or thereof, to the nonexclusive general jurisdiction of
         the courts of the State of New York, the courts of the United States of
         America for the Southern District of New York, and the appellate courts
         from any thereof;

                  (ii) consents that any such action or proceeding may be
         brought in such courts, and waives any objection that it may now or
         hereafter have to the venue of any such action or proceeding in any
         such court or that such action or proceeding was brought in an
         inconvenient court and agrees not to plead or claim the same;

                 (iii) agrees that service of process in any such action or
         proceeding may be effected by mailing a copy thereof by registered or
         certified mail (or any substantially similar form of mail), postage
         prepaid, to each party hereto at its address set forth in Section 10.3
         hereof, or at such other address of which the other parties shall have
         been notified pursuant thereto; and

                  (iv) agrees that nothing herein shall affect the right to
         effect service of process in any other manner permitted by law or shall
         limit the right to sue in any other jurisdiction.

                  (b) EACH OF THE PARTIES HERETO HEREBY AGREES TO WAIVE ITS
RESPECTIVE RIGHTS TO A JURY TRIAL OF ANY CLAIM OR CAUSE OF ACTION BASED UPON OR
ARISING OUT OF THIS AGREEMENT OR ANY DEALINGS BETWEEN THEM RELATING TO THE
SUBJECT MATTER OF THIS AGREEMENT AND THE RELATIONSHIP THAT IS BEING ESTABLISHED,
including, without limitation, contract claims, tort claims, breach of duty
claims and all other common law and statutory claims. Each of the parties
warrants and represents that it has reviewed this waiver with its legal counsel,
and that it knowingly and voluntarily waives its jury trial rights following
consultation with such legal counsel. THIS WAIVER IS IRREVOCABLE, AND CANNOT BE
MODIFIED EITHER ORALLY OR IN WRITING, AND THIS WAIVER SHALL APPLY TO ANY
SUBSEQUENT AMENDMENTS, RENEWALS, SUPPLEMENTS OR MODIFICATIONS TO THIS AGREEMENT.

                                       62
<PAGE>   66

                  IN WITNESS WHEREOF, the parties hereto have caused this
Agreement to be duly executed by their respective officers thereunto duly
authorized, as of the day and year first above written, and acknowledge that
this Agreement has been made and delivered in the City of New York, and this
Agreement has become effective only upon such execution and delivery.

                                     WILMINGTON TRUST COMPANY,
                                          not in its individual capacity but
                                          solely as Trustee for each of the
                                          Trusts

                                     By   /s/ signature
                                          --------------------------------------
                                          Name:
                                          Title:

                                     CITIBANK, N.A.,
                                       as Class G Liquidity Provider and Class C
                                       Liquidity Provider

                                     By   /s/ signature
                                          --------------------------------------
                                          Name:
                                          Title:

                                     AMBAC ASSURANCE CORPORATION,
                                          as Policy Provider

                                     By   /s/ signature
                                          --------------------------------------
                                          Name:
                                          Title:

                                     WILMINGTON TRUST COMPANY,
                                          not in its individual capacity except
                                          as expressly set forth herein but
                                          solely as Subordination Agent and
                                          trustee

                                     By   /s/ signature
                                          --------------------------------------
                                          Name:
                                          Title:<PAGE>   1
                                                                    EXHIBIT 4.10

                   Exchange and Registration Rights Agreement

                            Dated as of July 7, 2000

                                      among

                          America West Airlines, Inc.,

                            Wilmington Trust Company,

                    not in its individual capacity but solely
                                as Trustee under

                              America West Airlines
                       Pass Through Trust, Series 2000-1G

                              America West Airlines
                       Pass Through Trust, Series 2000-1C

                                       and

                       Morgan Stanley & Co. Incorporated,

                           Salomon Smith Barney Inc.,

                         Deutsche Bank Securities Inc.,

               Donaldson, Lufkin & Jenrette Securities Corporation

                                       and

               Merrill Lynch, Pierce, Fenner & Smith Incorporated

<PAGE>   2

                   EXCHANGE AND REGISTRATION RIGHTS AGREEMENT

                  THIS EXCHANGE AND REGISTRATION RIGHTS AGREEMENT (the
"Agreement") is made and entered into as of July 7, 2000, among America West
Airlines, Inc., a Delaware corporation (the "Company"), Wilmington Trust
Company, not in its individual capacity but solely as trustee under each of the
Original Trusts (as defined below), Morgan Stanley & Co. Incorporated, Salomon
Smith Barney Inc. Deutsche Bank Securities Inc., Donaldson, Lufkin & Jenrette
Securities Corporation and Merrill Lynch, Pierce, Fenner & Smith Incorporated
(collectively, the "Initial Purchasers").

                  This Agreement is made pursuant to the Purchase Agreement
dated June 27, 2000 among the Company and the Initial Purchasers (the "Purchase
Agreement"), which provides that the Trustee will issue and sell $232,898,000
principal amount of the pass through certificates of the Class G Trust (as
defined below) and $20,429,000 principal amount of the pass through certificates
of the Class C Trust (as defined below) (the Class G Trust and Class C Trust
together, the "Original Trusts" and such pass through certificates of the
Original Trusts, together, the "Initial Certificates"), in each case with Escrow
Receipts (as defined below) attached thereto. On the Transfer Date (as defined
below), and after satisfaction of the conditions set forth in the Pass Through
Trust Agreements (as defined below), each of the Original Trusts will transfer
and assign all of its assets and rights to a newly-created successor trust with
substantially identical terms (together, the "Successor Trusts") and the Initial
Certificates will be deemed for all purposes of the Original Trusts and the
Successor Trusts to be certificates representing fractional undivided interests
in the Successor Trusts and their respective trust properties. In order to
induce the Initial Purchasers to enter into the Purchase Agreement, the Company
has agreed to provide to the Initial Purchasers and their direct and indirect
transferees the exchange and registration rights set forth in this Agreement.
The execution and delivery of this Agreement is a condition to the closing under
the Purchase Agreement.

                  In consideration of the foregoing, the parties hereto agree as
follows:

                  1. Definitions. The definitions set forth in this Agreement
shall apply equally to both singular and plural forms of the terms defined. As
used in this Agreement, the following capitalized defined terms shall have the
following meanings:

                  "1933 Act" shall mean the Securities Act of 1933, as amended
         from time to time.

                  "1934 Act" shall mean the Securities Exchange Act of 1934, as
         amended from time to time.

                  "Agreement" shall have the meaning set forth in the preamble
         of this Agreement.

                  "Business Day" shall mean any day on which the New York Stock
         Exchange, Inc. is open for trading and banks in The City of New York
         are open for business; references to "day" shall mean a calendar day.

                  "Class G Trust" shall mean the America West Airlines Pass
         Through Trust, Series 2000-1G.

<PAGE>   3
                                       2

                  "Class C Trust" shall mean the America West Airlines Pass
         Through Trust, Series 2000-1C.

                  "Closing Date" shall mean the Closing Date as defined in the
         Purchase Agreement.

                  "Company" shall have the meaning set forth in the preamble of
         this Agreement and shall include the Company's successors.

                  "Depositary Agreement" shall have the meaning set forth in the
         Purchase Agreement.

                  "DTC" shall mean the Depository Trust Company or any other
         depositary appointed by the Company; provided, however, that any such
         depositary must have an address in the Borough of Manhattan, in The
         City of New York.

                  "Equipment Notes" shall mean the equipment notes that are the
         property of the Trusts.

                  "Escrow Receipts" shall have the meaning set forth in the
         Purchase Agreement.

                  "Exchange Certificates" shall mean the pass through
         certificates issued under the Pass Through Trust Agreements or the
         Successor Pass Through Trust Agreements, as the case may be, and
         otherwise containing terms identical in all material respects to the
         Initial Certificates (except that, with respect to the Exchange
         Certificates of each Trust, (i) interest thereon shall accrue as set
         forth in Section 2(a) hereof, (ii) the transfer restrictions thereon
         shall be eliminated, (iii) certain provisions relating to an increase
         in the stated rate of interest thereon shall be eliminated and (iv)
         such Exchange Certificates shall initially be available only in
         book-entry form) to be offered to Holders of Initial Certificates in
         exchange for Initial Certificates pursuant to the Exchange Offer.

                  "Exchange Offer" shall mean the exchange offer by the Company
         of Exchange Certificates for Registrable Certificates pursuant to
         Section 2(a) hereof.

                  "Exchange Offer Registration" shall mean a registration under
         the 1933 Act effected pursuant to Section 2(a) hereof.

                  "Exchange Offer Registration Statement" shall mean a
         Registration Statement on Form S-4 (or, if applicable, on another
         appropriate form) filed with the SEC pursuant to Section 2(a) of this
         Agreement, and all amendments and supplements to such Registration
         Statement, in each case including the Prospectus contained therein, all
         exhibits thereto and all material incorporated by reference therein.

<PAGE>   4
                                       3

                  "Holders" shall mean each of the Initial Purchasers, for so
         long as they own any Registrable Certificates, and each of their
         successors, assigns and direct and indirect transferees who become
         registered owners of Registrable Certificates.

                  "Initial Certificates" has the meaning set forth in the
         preamble of this Agreement.

                  "Initial Purchasers" shall have the meaning set forth in the
         preamble of this Agreement.

                  "Majority Holders" shall mean the Holders of a majority of the
         aggregate principal amount of outstanding Registrable Certificates;
         provided that whenever the consent or approval of Holders of a
         specified percentage of Registrable Certificates is required hereunder,
         Registrable Certificates held by the Company or any of its "affiliates"
         (as such term is defined in Rule 405 under the 1933 Act) (other than
         the Initial Purchasers or subsequent holders of Registrable
         Certificates if such subsequent holders are deemed to be affiliates
         solely by reason of their holding of such Registrable Certificates)
         shall be disregarded in determining whether such consent or approval
         was given by the Holders of such required percentage or amount.

                  "NASD" shall mean the National Association of Securities
         Dealers, Inc.

                  "Original Trusts" shall have the meaning set forth in the
         preamble of this Agreement.

                  "Participating Broker-Dealer" shall have the meaning set forth
         in Section 3(f) of this Agreement.

                  "Pass Through Trust Agreements" shall mean each of the Pass
         Through Trust Agreements relating to the Initial Certificates between
         the Company and each Trustee, as may be amended from time to time in
         accordance with the terms thereof.

                  "Person" shall mean an individual, partnership, corporation,
         trust or unincorporated organization, or a government or agency or
         political subdivision thereof.

                  "Prospectus" shall mean the prospectus included in a
         Registration Statement, including any preliminary prospectus, and any
         such prospectus as amended or supplemented by any prospectus
         supplement, including a prospectus supplement with respect to the terms
         of the offering of any portion of the Registrable Certificates covered
         by a Shelf Registration Statement, and by all other amendments and
         supplements to a prospectus, including post-effective amendments, and
         in each case including all material incorporated by reference therein.

                  "Purchase Agreement" shall have the meaning set forth in the
         preamble of this Agreement.

<PAGE>   5
                                       4

                  "Registrable Certificates" shall mean the Initial
         Certificates; provided, however, that the Initial Certificates shall
         cease to be Registrable Certificates when (i) a Shelf Registration
         Statement with respect to such Initial Certificates shall have been
         declared effective under the 1933 Act and such Initial Certificates
         shall have been disposed of pursuant to such Shelf Registration
         Statement, (ii) such Initial Certificates shall have been sold to the
         public pursuant to Rule 144 (or any similar provision then in force,
         but not Rule 144A) under the 1933 Act or may then be sold to the public
         pursuant to paragraph (k) of said Rule 144 (or any similar provision
         then in force) by Holders other than "affiliates" or former
         "affiliates" (as such term is defined in paragraph (a) of Rule 144) of
         the Company, (iii) such Initial Certificates shall have ceased to be
         outstanding or (iv) such Initial Certificates have been exchanged for
         Exchange Certificates upon consummation of the Exchange Offer.

                  "Registration Default" shall have the meaning set forth in
         Section 2(b) of this Agreement.

                  "Registration Event" shall mean the declaration of the
         effectiveness by the SEC of an Exchange Offer Registration Statement or
         a Shelf Registration Statement.

                  "Registration Expenses" shall mean any and all reasonable
         expenses incident to performance of or compliance by the Company and
         the Trustees with this Agreement, including without limitation: (i) all
         SEC, stock exchange or NASD registration and filing fees, (ii) all fees
         and expenses incurred in connection with compliance with state or other
         securities or blue sky laws and compliance with the rules of the NASD
         (including reasonable fees and disbursements of counsel for any
         underwriters or Holders in connection with state or other securities or
         blue sky qualification of any of the Exchange Certificates or
         Registrable Certificates), (iii) all expenses incurred by the Company
         in preparing or assisting in preparing, word processing, printing and
         distributing any Registration Statement, any Prospectus, any amendments
         or supplements thereto, any underwriting agreements, securities sales
         agreements and other documents relating to the performance of and
         compliance with this Agreement, (iv) all rating agency fees, (v) all
         fees and expenses incurred in connection with the listing, if any, of
         any of the Registrable Certificates on any securities exchange or
         exchanges, (vi) all fees and disbursements relating to the
         qualification of the Pass Through Trust Agreements and the Successor
         Pass Through Trust Agreements under applicable securities laws, (vii)
         the fees and disbursements of counsel for the Company and of the
         independent public accountants of the Company, including the expenses
         of any special audits or "cold comfort" letters required by or incident
         to such performance and compliance, (viii) the reasonable fees and
         expenses of the Trustees, including their counsel, and any escrow agent
         or custodian, (ix) in the case of a Shelf Registration Statement, the
         fees and disbursements of one counsel for the Holders (which counsel
         shall be selected by the Majority Holders and which counsel may also be
         counsel for the Initial Purchasers) and (x) any reasonable fees and
         disbursements of the underwriters, if any, in connection with any Shelf
         Registration Statement, and the reasonable fees and expenses of any
         special experts retained by the Company in connection with any
         Registration Statement, in each case as are customarily

<PAGE>   6
                                       5

         required to be paid by issuers, but excluding (with respect to clauses
         (iii) through (x) above) fees of counsel to the underwriters (other
         than fees and expenses set forth in clause (ii) above) or the Holders
         and underwriting discounts and commissions and transfer taxes, if any
         relating to the sale or disposition of Registrable Certificates by a
         Holder.

                  "Registration Statement" shall mean any registration statement
         of the Company which covers any of the Exchange Certificates or
         Registrable Certificates pursuant to the provisions of this Agreement,
         and all amendments and supplements to any such Registration Statement,
         including post-effective amendments, in each case including the
         Prospectus contained therein, all exhibits thereto and all material
         incorporated by reference therein.

                  "SEC" shall mean the Securities and Exchange Commission, as
         from time to time constituted or created under the United States
         Securities Exchange Act of 1934, as amended, or, if at any time after
         the execution of this instrument such Commission is not existing and
         performing the duties now assigned to it under the TIA, then the body
         performing such duties on such date.

                  "Shelf Registration" shall mean a registration under the 1933
         Act effected pursuant to Section 2(b) hereof.

                  "Shelf Registration Statement" shall mean a "shelf"
         registration statement of the Company pursuant to the provisions of
         Section 2(b) of this Agreement which covers some or all of the
         Registrable Certificates (but no other securities unless approved by
         the Holders whose Registrable Certificates are covered by such Shelf
         Registration Statement) on an appropriate form under Rule 415 under the
         1933 Act, or any similar rule that may be adopted by the SEC, and all
         amendments and supplements to such registration statement, including
         post-effective amendments, in each case including the Prospectus
         contained therein, all exhibits thereto and all material incorporated
         by reference therein.

                  "Staff" shall mean the Staff of the Division of Corporation
         Finance of the SEC.

                  "Successor Pass Through Trust Agreements" shall mean each of
         the Successor Pass Through Trust Agreements entered into on the date
         hereof between the Company and each Trustee forming the Successor
         Trusts, as may be amended from time to time in accordance with the
         terms thereof.

                  "Successor Trusts" shall have the meaning set forth in the
         preamble of this Agreement.

                  "TIA" shall have the meaning set forth in Section 3(l) of this
         Agreement.

                  "Transfer Date" shall have the meaning set forth in the
         Purchase Agreement.

<PAGE>   7
                                       6

                  "Trustees" shall mean the trustees under the Pass Through
         Trust Agreements or the Successor Pass Through Trust Agreements, as the
         case may be.

                  "Trusts" shall mean the Class G Trust and the Class C Trust,
         or the Successor Trusts, as the case may be.

                  2. Registration under the 1933 Act. (a) Exchange Offer
Registration. To the extent not prohibited by any applicable law or applicable
interpretation of the Staff, the Company shall use its best efforts (A) to file
with the SEC within 120 days after the Closing Date an Exchange Offer
Registration Statement covering the offer by the Company to the Holders to
exchange all of the Registrable Certificates for Exchange Certificates, (B) to
cause such Exchange Offer Registration Statement to be declared effective by the
SEC within 180 days after the Closing Date, (C) to cause such Registration
Statement to remain effective until the closing of the Exchange Offer and (D) to
consummate the Exchange Offer within 210 days after the Closing Date. Upon the
effectiveness of the Exchange Offer Registration Statement, the Company shall
promptly commence the Exchange Offer, it being the objective of such Exchange
Offer to enable each Holder (other than Participating Broker-Dealers) eligible
and electing to exchange Registrable Certificates for Exchange Certificates
(assuming that such Holder is not an affiliate of the Company within the meaning
of Rule 405 under the 1933 Act, acquires the Exchange Certificates in the
ordinary course of such Holder's business and has no arrangements or
understandings with any person to participate in the Exchange Offer for the
purpose of distributing the Exchange Certificates) to trade such Exchange
Certificates from and after their receipt without any limitations or
restrictions under the 1933 Act and without material restrictions under the
securities laws of a substantial proportion of the several states of the United
States.

                  In connection with the Exchange Offer, the Company shall or
shall direct the Trustees to and the Trustee shall:

                  (i) mail to each Holder a copy of the Prospectus forming part
         of the Exchange Offer Registration Statement, together with an
         appropriate letter of transmittal and related documents;

                  (ii) keep the Exchange Offer open for not less than 30 days
         after the date notice thereof is mailed to the Holders (or longer if
         required by applicable law);

                  (iii) use the services of DTC for the Exchange Offer with
         respect to Initial Certificates evidenced by global certificates;

                  (iv) permit Holders to withdraw tendered Registrable
         Certificates at any time prior to the close of business, New York City
         time, on the last Business Day on which the Exchange Offer shall remain
         open, by delivering to the institution specified in the notice, a
         telegram, telex, facsimile transmission or letter setting forth the
         name of such Holder, the principal amount of Registrable Certificates
         delivered for exchange, and a statement

<PAGE>   8
                                       7

         that such Holder is withdrawing its election to have such Registrable
         Certificates exchanged;

                  (v) use its best efforts to ensure that (i) any Exchange Offer
         Registration Statement and any amendment thereto and any Prospectus
         forming part thereof and any supplement thereto complies in all
         material respects with the 1933 Act and the rules and regulations
         thereunder, (ii) any Exchange Offer Registration Statement and any
         amendment thereto does not, when it becomes effective, contain an
         untrue statement of a material fact or omit to state a material fact
         required to be stated therein or necessary to make the statements
         therein not misleading and (iii) any Prospectus forming part of any
         Exchange Offer Registration Statement, and any supplement to such
         Prospectus (as amended or supplemented from time to time), does not,
         prior to the consummation of the Exchange Offer, include an untrue
         statement of a material fact or omit to state a material fact necessary
         in order to make the statements, in light of the circumstances under
         which they were made, not misleading; and

                  (vi) otherwise comply in all respects with all applicable laws
         relating to the Exchange Offer.

                  As soon as practicable after the close of the Exchange Offer,
the Company shall or shall direct the Trustees to and the Trustees shall:

                  (i) accept for exchange Registrable Certificates duly tendered
         and not validly withdrawn pursuant to the Exchange Offer in accordance
         with the terms of the Exchange Offer Registration Statement and the
         letter of transmittal which is an exhibit thereto;

                  (ii) cancel or cause to be canceled all Registrable
         Certificates so accepted for exchange by the Company; and

                  (iii) promptly cause to be authenticated and delivered
         Exchange Certificates to each Holder of Registrable Certificates equal
         in amount to the Registrable Certificates of such Holder so accepted
         for exchange.

                  Interest on each Exchange Certificate will accrue from the
last date on which interest was paid on the Registrable Certificates surrendered
in exchange therefor or, if no interest has been paid on the Registrable
Certificates, from the Closing Date. The Exchange Offer shall not be subject to
any conditions, other than that the Exchange Offer, or the making of any
exchange by a Holder, does not violate applicable law or any applicable
interpretation of the Staff. Each Holder of Registrable Certificates (other than
Participating Broker-Dealers) who wishes to exchange such Registrable
Certificates for Exchange Certificates in the Exchange Offer shall represent
that (i) it is not an "affiliate" of the Company or the Trustee within the
meaning of Rule 405 under the 1933 Act, (ii) any Exchange Certificates to be
received by it were acquired in the ordinary course of business and (iii) it has
no arrangement with any Person to participate in the distribution (within the
meaning of the 1933 Act) of the Exchange Certificates.

<PAGE>   9
                                       8

                  (b) Shelf Registration. (i) If, because of any change in law
or applicable interpretations thereof by the Staff, the Company is not permitted
to effect the Exchange Offer as contemplated by Section 2(a) hereof, or (ii) if
for any other reason the Exchange Offer is not consummated within 210 days after
the Closing Date (a "Registration Default"), or (iii) if any Holder (other than
an Initial Purchaser) is not eligible to participate in the Exchange Offer or
(iv) upon the request of any Initial Purchaser (with respect to any Registrable
Certificates which it acquired directly from the Company) following the
consummation of the Exchange Offer if such Initial Purchaser shall hold
Registrable Certificates which it acquired directly from the Company and if such
Initial Purchaser is not permitted, in the opinion of counsel to such Initial
Purchaser, pursuant to applicable law or applicable interpretation of the Staff
to participate in the Exchange Offer, the Company shall, at its cost:

                  (A) as promptly as practicable, file with the SEC a Shelf
         Registration Statement relating to the offer and sale of the
         Registrable Certificates by the Holders from time to time in accordance
         with the methods of distribution elected by the Majority Holders of
         such Registrable Certificates and set forth in such Shelf Registration
         Statement, and use its best efforts to cause such Shelf Registration
         Statement to be declared effective by the SEC by the 180th day after
         the Closing Date in the event that the Company is not permitted to
         effect the Exchange Offer as contemplated by Section 2(a) hereof (or
         promptly if the Exchange Offer is not consummated within 210 days after
         the Closing Date or in the event of a request by any Holder pursuant to
         clause (iii) above or any Initial Purchaser pursuant to clause (iv)
         above). In the event that the Company is required to file a Shelf
         Registration Statement upon the request of any Holder (other than an
         Initial Purchaser) not eligible to participate in the Exchange Offer
         pursuant to clause (iii) above or upon the request of any Initial
         Purchaser pursuant to clause (iv) above, the Company shall file and use
         its best efforts to have declared effective by the SEC both an Exchange
         Offer Registration Statement pursuant to Section 2(a) with respect to
         all Registrable Certificates and a Shelf Registration Statement (which
         may be a combined Registration Statement with the Exchange Offer
         Registration Statement) with respect to offers and sales of Registrable
         Certificates held by such Holder or such Initial Purchaser after
         completion of the Exchange Offer. If the Company files a Shelf
         Registration Statement pursuant to Section 2(b)(i) or (ii) hereof, the
         Company will no longer be required to effect the Exchange Offer;

                  (B) use its best efforts to keep the Shelf Registration
         Statement continuously effective, in order to permit the Prospectus
         forming part thereof to be usable by Holders, until the end of the
         period referred to in Rule 144(k) or any successor provision thereof
         (or one year from the Closing Date if such Shelf Registration Statement
         is filed upon the request of any Initial Purchaser pursuant to clause
         (iv) above) or such shorter period as shall end when all of the
         Registrable Certificates covered by the Shelf Registration Statement
         have been sold pursuant to the Shelf Registration Statement or cease to
         be outstanding; and

                  (C) notwithstanding any other provisions hereof, use its best
         efforts to ensure that (i) any Shelf Registration Statement and any
         amendment thereto and any Prospectus

<PAGE>   10
                                       9

         forming part thereof and any supplement thereto complies in all
         material respects with the 1933 Act and the rules and regulations
         thereunder, (ii) any Shelf Registration Statement and any amendment
         thereto (in either case, other than with respect to information
         included therein in reliance upon or in conformity with information
         furnished to the Company by or on behalf of a Holder specifically for
         use therein (the "Holders' Information")) does not, when it becomes
         effective, contain an untrue statement of a material fact or omit to
         state a material fact required to be stated therein or necessary to
         make the statements therein not misleading and (iii) during the period
         in which the Shelf Registration Statement is effective any Prospectus
         forming part of any Shelf Registration Statement, and any supplement to
         such Prospectus (as amended or supplemented from time to time) (in any
         case, other than with respect to Holders' Information), does not
         include an untrue statement of a material fact or omit to state a
         material fact necessary in order to make the statements, in light of
         the circumstances under which they were made, not misleading.

                  The Company further agrees, if necessary, to supplement or
amend the Shelf Registration Statement if reasonably requested by the Majority
Holders with respect to Holders' Information and otherwise as required by
Section 3(b) below, to use all reasonable efforts to cause any such amendment to
become effective and such Shelf Registration Statement to become usable as soon
as practicable thereafter and to furnish to the Holders of Registrable
Certificates included in the Shelf Registration Statement copies of any such
supplement or amendment promptly after its being used or filed with the SEC.

                  The Company shall be allowed a period of five days, beginning
on the first day a Registration Default occurs, to cure such Registration
Default before the Company will be required to comply with the requirements of
Section 2(b).

                  (c) Expenses. The Company shall pay all Registration Expenses
in connection with the registration pursuant to Section 2(a) or 2(b) and, in the
case of any Shelf Registration Statement, will reimburse the Holders or Initial
Purchasers for the reasonable fees and disbursements of one firm or counsel
designated in writing by the Majority Holders to act as counsel for the Holders
of the Registrable Certificates in connection therewith. Each Holder shall pay
all expenses of its counsel, other than as set forth in the preceding sentence,
underwriting discounts and commissions and transfer taxes, if any, relating to
the sale or disposition of such Holder's Registrable Certificates pursuant to
the Shelf Registration Statement.

                  (d) Effective Registration Statement. (i) The Company will be
deemed not to have used its best efforts to cause the Exchange Offer
Registration Statement or the Shelf Registration Statement, as the case may be,
to become, or to remain, effective during the requisite period if the Company
voluntarily takes any action that would result in any such Registration
Statement not being declared effective or in the Holders of Registrable
Certificates covered thereby not being able to exchange or offer and sell such
Registrable Certificates during that period unless (A) such action is required
by applicable law or (B) such action is taken by the Company in good faith and
for valid business reasons (not including avoidance of the

<PAGE>   11
                                       10

Company's obligations hereunder), including, without limitation, the acquisition
or divestiture of assets, so long as the Company promptly complies with the
requirements of Section 3(j) hereof, if applicable.

                  (ii) An Exchange Offer Registration Statement pursuant to
Section 2(a) hereof or a Shelf Registration Statement pursuant to Section 2(b)
hereof will not be deemed to have become effective unless it has been declared
effective by the SEC; provided, however, that if, after it has been declared
effective, the offering of Registrable Certificates pursuant to a Registration
Statement is interfered with by any stop order, injunction or other order or
requirement of the SEC or any other governmental agency or court, such
Registration Statement will be deemed not to have been effective during the
period of such interference, until the offering of Registrable Certificates
pursuant to such Registration Statement may legally resume.

                  (e) Increase in Interest Rate. In the event that no
Registration Event has occurred on or prior to the 210th day after the Closing
Date, the interest rate per annum payable in respect of the Initial Certificates
shall be increased by 0.50%, effective from and including such 210th day, to but
excluding the earlier of (i) the date on which a Registration Event occurs and
(ii) the date on which there cease to be any Registrable Certificates, which
additional interest shall be paid through a combination of an increase in the
interest rate per annum borne by the Equipment Notes of 0.50% and, if
applicable, an increase in the interest rate per annum payable on the Deposits
of 0.50% pursuant to the Depositary Agreements. In the event that the Shelf
Registration Statement ceases to be effective at any time during the period
specified by Section 2(b)(B) hereof for more than 60 days, whether or not
consecutive, during any 12-month period, the interest rate payable in respect of
the Initial Certificates shall be increased by 0.50% per annum from the 61st day
of the applicable 12-month period such Shelf Registration Statement ceases to be
effective until such time as the Shelf Registration Statement again becomes
effective (or, if earlier, the end of the period specified by Section 2(b)(B)
hereof), which additional interest shall be paid through a combination of an
increase in the interest rate per annum borne by the Equipment Notes of 0.50%
and, if applicable, an increase in the interest rate per annum payable on the
Deposits of 0.50% pursuant to the Depositary Agreements.

                  (f) Specific Performance. Without limiting the remedies
available to the Initial Purchasers and the Holders, the Company acknowledges
that any failure by the Company to comply with its obligations under Section
2(a) and Section 2(b) hereof may result in material irreparable injury to the
Initial Purchasers or the Holders for which there is no adequate remedy at law,
that it will not be possible to measure damages for such injuries precisely and
that, in the event of any such failure, each Initial Purchaser or any Holder may
obtain such relief as may be required to specifically enforce the Company's
obligations under Section 2(a) and Section 2(b) hereof.

                  3. Registration Procedures. In connection with the obligations
of the Company with respect to the Registration Statements pursuant to Sections
2(a) and 2(b) hereof, the Company shall:

<PAGE>   12
                                       11

                  (a) prepare and file with the SEC a Registration Statement,
         within the time period specified in Section 2, on the appropriate form
         under the 1933 Act, which form (i) shall be selected by the Company,
         (ii) shall, in the case of a Shelf Registration, be available for the
         sale of the Registrable Certificates by the selling Holders thereof and
         (iii) shall comply as to form in all material respects with the
         requirements of the applicable form;

                  (b) prepare and file with the SEC such amendments and
         post-effective amendments to each Registration Statement as may be
         necessary under applicable law to keep such Registration Statement
         effective for the applicable period; cause each Prospectus to be
         supplemented by any required prospectus supplement, and as so
         supplemented to be filed pursuant to Rule 424 under the 1933 Act;

                  (c) in the case of a Shelf Registration, (i) notify each
         Holder of Registrable Certificates when a Shelf Registration Statement
         with respect to the Registrable Certificates has been filed and advise
         such Holders that the distribution of Registrable Certificates will be
         made in accordance with the method elected by the Majority Holders;
         (ii) furnish to each Holder of Registrable Certificates included within
         the coverage of the Shelf Registration Statement at least one copy of
         such Shelf Registration Statement and any post-effective amendment
         thereto, including financial statements and schedules, and, if the
         Holder so requests in writing, all reports, other documents and
         exhibits filed with the SEC (including those incorporated by reference)
         at the expense of the Company, (iii) furnish to each Holder of
         Registrable Certificates included within the coverage of the Shelf
         Registration Statement, to counsel for the Holders and to each
         underwriter of an underwritten offering of Registrable Certificates, if
         any, without charge, as many copies of each Prospectus, including each
         preliminary Prospectus, and any amendment or supplement thereto as such
         Holder or underwriter may reasonably request in order to facilitate the
         public sale or other disposition of the Registrable Certificates; and
         (iv) subject to the last paragraph of Section 3, consent to the use of
         the Prospectus or any amendment or supplement thereto by each of the
         selling Holders of Registrable Certificates included in the Shelf
         Registration Statement in connection with the offering and sale of the
         Registrable Certificates covered by the Prospectus or any amendment or
         supplement thereto;

                  (d) use its best efforts to register or qualify the
         Registrable Certificates or cooperate with the Holders of Registrable
         Certificates and their counsel in the registration or qualification of
         such Registrable Certificates under all applicable state securities or
         "blue sky" laws of such jurisdictions as any Holder of Registrable
         Certificates covered by a Registration Statement and each underwriter
         of an underwritten offering of Registrable Certificates shall
         reasonably request in writing, to cooperate with the Holders in
         connection with any filings required to be made with the NASD, and do
         any and all other acts and things which may be reasonably necessary or
         advisable to enable such Holders to consummate the disposition in each
         such jurisdiction of such Registrable Certificates owned by such
         Holders; provided, however, that in no event shall the Company be
         required to (i) qualify as a foreign corporation or as a dealer in
         securities in any

<PAGE>   13
                                       12

         jurisdiction where it would not otherwise be required to qualify but
         for this Section 3(d) or (ii) take any action which would subject it to
         general service of process or taxation in any such jurisdiction if it
         is not then so subject;

                  (e) in the case of a Shelf Registration or in the case of an
         Exchange Registration, if the Company has received from a Participating
         Broker-Dealer the notice specified in Section 3(f)(A)(ii), notify each
         Holder of Registrable Certificates included in such Shelf Registration
         or such Exchange Registration and such Participating Broker-Dealer
         promptly and, if requested by such Holder, Participating Broker-Dealer
         or their counsel, confirm such advice in writing promptly (i) when a
         Registration Statement has become effective and when any post-effective
         amendments and supplements thereto become effective, (ii) of any
         request by the SEC or any state securities authority for post-effective
         amendments and supplements to a Registration Statement and Prospectus
         or for additional information after the Registration Statement has
         become effective, (iii) of the issuance by the SEC or any state
         securities authority of any stop order suspending the effectiveness of
         a Registration Statement or the initiation of any proceedings for that
         purpose, (iv) in the case of a Shelf Registration at the closing of any
         sale of Registrable Certificates if, between the effective date of a
         Shelf Registration Statement and such closing, the representations and
         warranties of the Company contained in any underwriting agreement,
         securities sales agreement or other similar agreement, if any, relating
         to such offering cease to be true and correct in all material respects,
         (v) of the receipt by the Company of any notification with respect to
         the suspension of the qualification of the Registrable Certificates for
         sale in any jurisdiction or the initiation or threatening of any
         proceeding for such purpose, (vi) of the happening of any material
         event or the discovery of any material facts during the period a
         Registration Statement is effective which makes any statement made in
         such Registration Statement or the related Prospectus untrue or which
         requires the making of any changes in such Registration Statement or
         Prospectus in order to make the statements therein (in the case of the
         Prospectus in light of the circumstances under which they were made)
         not misleading and (vii) of any determination by the Company that a
         post-effective amendment to a Registration Statement would be
         appropriate;

                  (f) (A) in the case of the Exchange Offer, (i) include in the
                  Exchange Offer Registration Statement a "Plan of Distribution"
                  section covering the use of the Prospectus included in the
                  Exchange Offer Registration Statement by broker-dealers who
                  have exchanged their Registrable Certificates for Exchange
                  Certificates for the resale of such Exchange Certificates,
                  (ii) furnish to each broker-dealer who has delivered to the
                  Company a notice that they will be utilizing the Prospectus
                  contained in the Exchange Offer Registration Statement to sell
                  Exchange Certificates and is required to deliver a Prospectus
                  and who agrees to be bound by the applicable terms of this
                  Agreement, without charge, as many copies of each Prospectus
                  included in the Exchange Offer Registration Statement,
                  including any preliminary prospectus, and any amendment or
                  supplement thereto, as such broker-dealer may reasonably
                  request, (iii) include in the Exchange Offer Registration
                  Statement a statement that any broker-dealer

<PAGE>   14
                                       13

                  who holds Registrable Certificates acquired for its own
                  account as a result of market-making activities or other
                  trading activities (a "Participating Broker-Dealer"), and who
                  receives Exchange Certificates for Registrable Certificates
                  pursuant to the Exchange Offer, may be a statutory underwriter
                  and must deliver a prospectus meeting the requirements of the
                  1933 Act in connection with any resale of such Exchange
                  Certificates, (iv) subject to the last paragraph of Section 3,
                  hereby consent to the use of the Prospectus forming part of
                  the Exchange Offer Registration Statement or any amendment or
                  supplement thereto, by any broker-dealer who has delivered the
                  notice specified in clause (ii) above in connection with the
                  sale or transfer of the Exchange Certificates covered by the
                  Prospectus or any amendment or supplement thereto, and (v)
                  include in the transmittal letter or similar documentation to
                  be executed by an exchange offeree in order to participate in
                  the Exchange Offer the following provision:

                           "If the undersigned is not a broker-dealer, the
                           undersigned represents that it is not engaged in, and
                           does not intend to engage in, a distribution of
                           Exchange Certificates. If the undersigned is a
                           broker-dealer that will receive Exchange Certificates
                           for its own account in exchange for Registrable
                           Certificates, it represents that the Registrable
                           Certificates to be exchanged for Exchange
                           Certificates were acquired by it as a result of
                           market-making activities or other trading activities
                           and acknowledges that it will deliver a prospectus
                           meeting the requirements of the 1933 Act in
                           connection with any resale of such Exchange
                           Certificates pursuant to the Exchange Offer; however,
                           by so acknowledging and by delivering a prospectus,
                           the undersigned will not be deemed to admit that it
                           is an "underwriter" within the meaning of the 1933
                           Act";

                           (B) to the extent any Participating Broker-Dealer
                  participates in the Exchange Offer, use its best efforts to
                  cause to be delivered at the request of an entity representing
                  the Participating Broker-Dealers (which entity shall be Morgan
                  Stanley & Co. Incorporated, unless it elects not to act as
                  such representative) only one, if any, "cold comfort" letter
                  with respect to the Prospectus in the form existing on the
                  last date for which exchanges are accepted pursuant to the
                  Exchange Offer and with respect to each subsequent amendment
                  or supplement, if any, effected during the period specified in
                  clause (C) below;

                           (C) to the extent any Participating Broker-Dealer
                  participates in the Exchange Offer, use its best efforts to
                  maintain the effectiveness of the Exchange Offer Registration
                  Statement for such period of time as any Participating
                  Broker-Dealer must comply with the prospectus delivery
                  requirements of the 1933 Act; provided, however, that such
                  period shall not exceed the 180-day period specified in clause
                  (D) below; and

<PAGE>   15
                                       14

                           (D) not be required to amend or supplement the
                  Prospectus contained in the Exchange Offer Registration
                  Statement as would otherwise be contemplated by Section 3(b),
                  or take any other action as a result of this Section 3(f), for
                  a period exceeding 180 days after the last date for which
                  exchanges are accepted pursuant to the Exchange Offer (as such
                  period may be extended by the Company) and Participating
                  Broker-Dealers shall not be authorized by the Company to, and
                  shall not, deliver such Prospectus after such period in
                  connection with resales contemplated by this Section 3;

                  (g) (A) in the case of an Exchange Offer, furnish counsel for
         the Initial Purchasers and (B) in the case of a Shelf Registration,
         furnish counsel for the Holders of Registrable Certificates copies of
         any request by the SEC or any state securities authority for amendments
         or supplements to a Registration Statement and Prospectus or for
         additional information;

                  (h) make every reasonable effort to obtain the withdrawal of
         any order suspending the effectiveness of a Registration Statement as
         soon as practicable;

                  (i) unless any Registrable Certificates are in book entry form
         only, in the case of a Shelf Registration, cause the Trustees to
         cooperate with the selling Holders of Registrable Certificates to
         facilitate the timely preparation and delivery of certificates
         representing Registrable Certificates to be sold free from any
         restrictive legends; and cause such Registrable Certificates to be in
         such denominations (consistent with the provisions of the Pass Through
         Trust Agreements or the Successor Pass Through Trust Agreements, as the
         case may be) and registered in such names as the selling Holders or the
         underwriters, if any, may reasonably request at least two Business Days
         prior to the closing of any sale of Registrable Certificates;

                  (j) in the case of a Shelf Registration, upon the occurrence
         of any event or the discovery of any facts, each as contemplated by
         Sections 2(d)(i)(B) or 3(e)(ii)-(vi) hereof, use its best efforts to
         prepare a post-effective amendment to a Registration Statement or an
         amendment or supplement to the related Prospectus or file any other
         required document so that, as thereafter delivered to the Initial
         Purchasers of the Registrable Certificates, such Prospectus will not
         contain at the time of such delivery any untrue statement of a material
         fact or omit to state a material fact necessary to make the statements
         therein, in light of the circumstances under which they were made, not
         misleading. The Company agrees to notify each Holder to suspend use of
         the Prospectus as promptly as practicable after the occurrence of such
         an event, and each Holder hereby agrees to suspend use of the
         Prospectus as promptly as practicable upon receipt of such notice until
         the Company has amended or supplemented the Prospectus to correct such
         misstatement or omission or until notified that use of the Prospectus
         may be resumed, provided that the Company shall use all reasonable
         efforts to cause such suspension not to last more than 30 days per
         occurrence or more than 60 days in aggregate in a calendar year. At
         such time as such public disclosure is otherwise made or the Company
         determines that such disclosure is not necessary, in each case to
         correct any misstatement

<PAGE>   16
                                       15

         of a material fact or to include any omitted material fact, the Company
         agrees promptly to notify each Holder of such determination and to
         furnish each Holder such numbers of copies of the Prospectus, as
         amended or supplemented, as such Holder may reasonably request;

                  (k) obtain a CUSIP number for all Exchange Certificates, or
         Registrable Certificates, as the case may be, of each Trust not later
         than the effective date of an Exchange Offer Registration Statement or
         Shelf Registration Statement, as the case may be, and provide the
         Trustees with certificates evidencing the Exchange Certificates or the
         Registrable Certificates, as the case may be, held in book entry form,
         in a form eligible for deposit with DTC;

                  (l) (i) cause the Pass Through Trust Agreements or Successor
         Pass Through Trust Agreements, as the case may be, to be qualified
         under the Trust Indenture Act of 1939, as amended (the "TIA"), in
         connection with the registration of the Exchange Certificates, or
         Registrable Certificates, as the case may be, (ii) cooperate with the
         Trustees and the Holders to effect such changes to the Pass Through
         Trust Agreements or Successor Pass Through Trust Agreements as may be
         required for the Pass Through Trust Agreements or Successor Pass
         Through Trust Agreements, as the case may be, to be so qualified in
         accordance with the terms of the TIA and (iii) execute, and use its
         best efforts to cause the Trustees to execute, all documents as may be
         required to effect such changes, and all other forms and documents
         required to be filed with the SEC to enable the Pass Through Trust
         Agreements or Successor Pass Through Trust Agreements, as the case may
         be, to be so qualified in a timely manner;

                  (m) in the case of a Shelf Registration, enter into such
         customary agreements (including underwriting agreements in customary
         form) and take all other customary and appropriate actions (including
         those reasonably requested by the Holders of a majority in principal
         amount of Registrable Certificates being sold) in order to expedite or
         facilitate the disposition of such Registrable Certificates and in such
         connection whether or not an underwriting agreement is entered into and
         whether or not the registration is an underwritten registration:

                           (i) make such representations and warranties to the
                  Holders of such Registrable Certificates and the underwriters,
                  if any, in form, substance and scope as are customarily made
                  by the Company to underwriters in similar underwritten
                  offerings as may be reasonably requested by them;

                           (ii) obtain opinions of counsel to the Company (who
                  may be the general counsel of the Company) and updates thereof
                  (which counsel and opinions (in form, scope and substance)
                  shall be reasonably satisfactory to the managing underwriters,
                  if any, or if there are no such managing underwriters, to the
                  Holders of a majority in principal amount of the Registrable
                  Certificates being sold) addressed to each selling Holder and
                  the underwriters, if any, covering the matters

<PAGE>   17
                                       16

                  customarily covered in opinions requested in sales of
                  securities or underwritten offerings;

                           (iii) obtain a "cold comfort" letter and updates
                  thereof from the Company's independent certified public
                  accountants addressed to the underwriters, if any, such letter
                  to be in customary form and covering such matters of the type
                  customarily covered in "cold comfort" letters in connection
                  with similar underwritten offerings as the managing
                  underwriters shall reasonably request;

                           (iv) enter into a securities sales agreement with the
                  Holders and an agent of the Holders providing for, among other
                  things, the appointment of such agent for the selling Holders
                  for the purpose of soliciting purchases of Registrable
                  Certificates, which agreement shall be in form, substance and
                  scope customary for similar offerings;

                           (v) if an underwriting agreement is entered into,
                  cause the same to set forth indemnification provisions and
                  procedures substantially equivalent to the indemnification
                  provisions and procedures set forth in Section 5 hereof (or
                  such other provisions and procedures acceptable to Holders of
                  a majority in principal amount of Registrable Certificates
                  being sold and the managing underwriters) with respect to all
                  parties to be indemnified pursuant to said Section; and

                           (vi) deliver such other documents and certificates as
                  may be reasonably requested by Holders of a majority in
                  principal amount of Registrable Certificates being sold, and
                  as are customarily delivered in similar offerings.

         The above shall be done at (i) the effectiveness of such Registration
         Statement (and, if appropriate, each post-effective amendment thereto)
         if appropriate in connection with any particular disposition of
         Registrable Certificates and (ii) each closing under any underwriting
         or similar agreement as and to the extent required thereunder. In the
         case of any underwritten offering, the Company shall provide written
         notice to the Holders of all Registrable Certificates of such
         underwritten offering at least 30 days prior to the filing of the
         prospectus supplement in connection with such underwritten offering.
         Such notice shall (x) offer each such Holder the right to participate
         in such underwritten offering, (y) specify a date, which shall be no
         earlier than 10 days following the date of such notice, by which such
         Holder must inform the Company of its intent to participate in such
         underwritten offering and (z) include the instructions such Holder must
         follow in order to participate in such underwritten offering;

                  (n) in the case of a Shelf Registration, make available for
         inspection by representatives of the Holders of the Registrable
         Certificates and any underwriters participating in any disposition
         pursuant to a Shelf Registration Statement and any counsel or
         accountant retained by such Holders or underwriters, all financial and
         other records, pertinent corporate documents and properties of the
         Company reasonably

<PAGE>   18
                                       17

         requested by it, and cause the respective officers, directors,
         employees, and any other agents of the Company to make reasonably
         available all relevant information reasonably requested by any such
         representative, underwriter, counsel or accountant in connection with a
         Registration Statement, in each case as is customary for similar due
         diligence examinations; provided, however, that any information that is
         designated in writing by the Company, in good faith, as confidential at
         the time of delivery of such information shall be kept confidential by
         such representatives, underwriters, counsel or accountant, unless such
         disclosure is made in connection with a court proceeding or required by
         law, or such information becomes available to the public generally or
         through a third party without an accompanying obligation of
         confidentiality; and provided further that the foregoing inspection and
         information gathering shall, to the extent reasonably possible, be
         coordinated on behalf of the Holders and the other parties entitled
         thereto by one counsel designated by and on behalf of such Holders and
         other parties; and provided further that each person performing such
         inspection and information gathering will be required to execute a
         confidentiality agreement containing customary terms and provisions and
         to agree that upon learning that disclosure of such information is
         sought in connection with a court proceeding or required by law, it
         will give notice to the Company and allow the Company at its expense to
         undertake appropriate action to prevent disclosure of such confidential
         information;

                  (o) (i) a reasonable time prior to the filing of any Exchange
         Offer Registration Statement, any Prospectus forming a part thereof,
         any amendment to an Exchange Offer Registration Statement or amendment
         or supplement to a Prospectus, provide copies of such document to the
         Initial Purchasers, and use its best efforts to reflect in any such
         document when filed such comments as any of the Initial Purchasers or
         their counsel may reasonably request; (ii) in the case of a Shelf
         Registration, a reasonable time prior to filing any Shelf Registration
         Statement, any Prospectus forming a part thereof, any amendment to such
         Shelf Registration Statement or amendment or supplement to such
         Prospectus (unless such supplement is being filed in response to a
         request by a Holder to amend any Holder's Information with respect to
         such Holder), provide copies of such document to the Holders of
         Registrable Certificates participating in a disposition thereunder, to
         the Initial Purchasers, to counsel on behalf of the Holders and to the
         underwriter or underwriters of an underwritten offering of Registrable
         Certificates, if any, and use its best efforts to reflect such comments
         in any such document when filed as such Holders of Registrable
         Certificates, their counsel and any underwriter may reasonably request;
         and (iii) cause the representatives of the Company to be available for
         discussion of such document as shall be reasonably requested by such
         Holders of Registrable Certificates, the Initial Purchasers on behalf
         of such Holders or any underwriter and shall not at any time make any
         filing of any such document of which such Holders, the Initial
         Purchasers on behalf of such Holders, their counsel or any underwriter
         shall not have previously been advised and furnished a copy or to which
         such Holders, the Initial Purchasers on behalf of such Holders, their
         counsel or any underwriter shall reasonably object;

<PAGE>   19
                                       18

                  (p) use its best efforts to cause the Exchange Certificates or
         Registrable Certificates, as the case may be, to be rated with two
         nationally recognized statistical rating organizations (as such term is
         defined in Rule 436(g)(12) under the 1933 Act);

                  (q) in the case of a Shelf Registration, use its best efforts
         to cause all Registrable Certificates to be listed on any securities
         exchange or any automated quotation system on which similar securities
         issued by the Company are then listed if requested by the Majority
         Holders, to the extent such Registrable Certificates satisfy applicable
         listing requirements; and

                  (r) otherwise use its best efforts to comply with all
         applicable rules and regulations of the SEC and make generally
         available to its security holders, as soon as reasonably practicable
         after the effective date of a Registration Statement, an earnings
         statement which shall satisfy the provisions of Section 11(a) of the
         1933 Act and Rule 158 thereunder.

                  In the case of a Shelf Registration Statement, the Company may
(as a condition to such Holder's participation in the Shelf Registration)
require each Holder of Registrable Certificates to agree to be bound by the
applicable terms of this Agreement and to furnish to the Company such
information regarding such Holder and the proposed distribution by such Holder
of such Registrable Certificates as the Company may from time to time reasonably
request and the Company may exclude from such registration the Registrable
Certificates of any Holder that fails to furnish such information within a
reasonable time after receiving such request. Each Holder as to which any Shelf
Registration is being effected hereby agrees to furnish to the Company all
information with respect to such Holder necessary to make the information
previously furnished to the Company by such Holder not materially misleading.

                  Each Holder agrees that, upon receipt of any notice from the
Company of the happening of any event or the discovery of any facts, each of the
kind described in Sections 2(d)(i)(B) or 3(e)(ii)-(vi) hereof, such Holder will
forthwith discontinue disposition of Registrable Certificates pursuant to such
Registration Statement until such Holder's receipt of the copies of the
supplemented or amended Prospectus contemplated by Section 3(j) hereof or it is
advised in writing by the Company that the use of the applicable Prospectus may
be resumed, and, if so directed by the Company, such Holder will deliver to the
Company (at the Company's expense) all copies in its possession other than
permanent file copies then in such Holder's possession, of the Prospectus
covering such Registrable Certificates current at the time of receipt of such
notice. If the Company shall give any such notice to suspend the disposition of
Registrable Certificates pursuant to a Registration Statement as a result of the
happening of any event or the discovery of any facts, each of the kind described
in Sections 2(d)(i)(B) or 3(e)(ii)-(vi) hereof, the Company shall be deemed to
have used its best efforts to keep the Registration Statement effective during
such period of suspension provided that the Company shall use its best efforts
to file and have declared effective (if an amendment) as soon as practicable an
amendment or supplement to the Registration Statement and shall extend the
period during which the Registration Statement shall be maintained effective
pursuant to this Agreement by the number of days during the period from and
including the date of the giving of such notice to and

<PAGE>   20
                                       19

including the date when the Holders shall have received copies of the
supplemented or amended Prospectus necessary to resume such dispositions or it
is advised in writing by the Company that the use of the applicable Prospectus
may be resumed.

                  4. Underwritten Offering. The Holders of Registrable
Certificates covered by a Shelf Registration Statement who desire to do so may
sell such Registrable Certificates in an underwritten offering. In any such
underwritten offering, the investment banker or bankers and manager or managers
that will administer the offering will be selected by, and the underwriting
arrangements with respect thereto will be approved by, the Holders of a majority
of the Registrable Securities to be included in such offering; provided,
however, that (i) such investment bankers and managers and underwriting
arrangements must be reasonably satisfactory to the Company and (ii) the Company
shall not be obligated to arrange for more than one underwritten offering during
the period such Shelf Registration Statement is required to be effective
pursuant to Section 2(b)(B) hereof. No Holder may participate in any
underwritten offering contemplated hereby unless such Holder (a) agrees to sell
such Holder's Registrable Certificates in accordance with any approved
underwriting arrangements, (b) completes and executes all reasonable
questionnaires, powers of attorney, indemnities, underwriting agreements,
lock-up letters and other documents required under the terms of such approved
underwriting arrangements and (c) at least 20% of the outstanding Registrable
Certificates are included in such underwritten offering. The Holders
participating in any underwritten offering shall be responsible for any expenses
customarily borne by selling securityholders, including underwriting discounts
and commissions and fees and expenses of counsel to the selling securityholders.

                  5. Indemnification and Contribution. (a) The Company agrees to
indemnify and hold harmless, each Initial Purchaser, each Holder and each
person, if any, who controls any Initial Purchaser or any Holder within the
meaning of either Section 15 of the 1933 Act or Section 20 of the 1934 Act, from
and against all losses, claims, damages and liabilities (including, without
limitation, any legal or other expenses reasonably incurred by any Initial
Purchaser, any Holder or any such controlling person in connection with
defending or investigating any such action or claim) caused by any untrue
statement or alleged untrue statement of a material fact contained in any
Registration Statement (or any amendment thereto) pursuant to which Exchange
Certificates or Registrable Certificates were registered under the 1933 Act,
including all documents incorporated therein by reference, or caused by any
omission or alleged omission to state therein a material fact required to be
stated therein or necessary to make the statements therein not misleading, or
caused by any untrue statement or alleged untrue statement of a material fact
contained in any Prospectus (as amended or supplemented if the Company shall
have furnished any amendments or supplements thereto), or caused by any omission
or alleged omission to state therein a material fact necessary to make the
statements therein in light of the circumstances under which they were made not
misleading, except insofar as such losses, claims, damages or liabilities are
caused by any such untrue statement or omission or alleged untrue statement or
omission based upon information relating to the Initial Purchasers or any Holder
furnished to the Company in writing by the Initial Purchasers or any selling
Holder expressly for use therein; provided, however, that the foregoing
indemnity agreement with respect to any preliminary Prospectus shall not inure
to the benefit of any Person

<PAGE>   21
                                       20

from whom the Person asserting any such losses, claims, damages or liabilities
purchased Registrable Certificates, or any person controlling such seller, if a
copy of the final Prospectus (as then amended or supplemented if the Company
shall have furnished any amendments or supplements thereto) was not sent or
given by or on behalf of such seller to such purchaser with or prior to the
written confirmation of the sale of the Registrable Certificates to such Person,
and if the final Prospectus (as so amended or supplemented) would have cured the
defect giving rise to such losses, claims, damages or liabilities. In connection
with any underwritten offering permitted by Section 4, the Company will also
indemnify the underwriters participating in the distribution, their officers and
directors and each Person who controls such Persons (within the meaning of the
1933 Act and the 1934 Act) to the same extent as provided above with respect to
the indemnification of the Holders, if requested in connection with any
Registration Statement.

                  (b) Each Holder agrees, severally and not jointly, to
indemnify and hold harmless the Company, each Initial Purchaser, the other
selling Holders, and each of their respective directors, officers who sign the
Registration Statement and each Person, if any, who controls the Company, any
Initial Purchaser and any other selling Holder within the meaning of either
Section 15 of the 1933 Act or Section 20 of the 1934 Act to the same extent as
the foregoing indemnity from the Company to the Initial Purchasers and the
Holders, but only with reference to information relating to such Holder
furnished to the Company in writing by such Holder expressly for use in any
Registration Statement (or any amendment thereto) or any Prospectus (or any
amendment or supplement thereto).

                  (c) In case any proceeding (including any governmental
investigation) shall be instituted involving any person in respect of which
indemnity may be sought pursuant to either paragraph (a) or paragraph (b) above,
such person (the "indemnified party") shall promptly notify the person against
whom such indemnity may be sought (the "indemnifying party") in writing and the
indemnifying party, may elect to or upon request of the indemnified party, shall
retain counsel reasonably satisfactory to the indemnified party to represent the
indemnified party and any others the indemnifying party may designate in such
proceeding and shall pay the fees and disbursements of such counsel related to
such proceeding. In any such proceeding, any indemnified party shall have the
right to retain its own counsel, but the fees and expenses of such counsel shall
be at the expense of such indemnified party unless (i) the indemnifying party
and the indemnified party shall have mutually agreed to the retention of such
counsel or (ii) the named parties to any such proceeding (including any
impleaded parties) include both the indemnifying party and the indemnified party
and representation of both parties by the same counsel would be inappropriate
due to actual or potential differing interests between them. It is understood
that the indemnifying party shall not, in connection with any proceeding or
related proceedings in the same jurisdiction, be liable for the fees and
expenses of more than one separate firm (in addition to any local counsel) for
all such indemnified parties and that such fees and expenses shall be reimbursed
as they are incurred. Such firm shall be designated in writing (i) by the
Initial Purchasers in the case of the Initial Purchasers and related parties
indemnified pursuant to paragraph (a) above, (ii) by the Majority Holders in the
case of the Holders and related parties indemnified pursuant to paragraph (a)
above, and (iii) by the Company in the case of parties indemnified pursuant to
paragraph (b) above. The indemnifying party shall not be liable for any
settlement of any proceeding effected without its written consent but, if
settled

<PAGE>   22
                                       21

with such consent or if there be a final judgment for the plaintiff, the
indemnifying party agrees to indemnify the indemnified party from and against
any loss or liability by reason of such settlement or judgment. No indemnifying
party shall, without the prior written consent of the indemnified party, effect
any settlement of any pending or threatened proceeding in respect of which such
indemnified party is or could have been a party and indemnity could have been
sought hereunder by such indemnified party, unless such settlement includes an
unconditional release of such indemnified party from all liability on claims
that are the subject matter of such proceeding.

                  (d) If the indemnification provided for in paragraph (a) or
paragraph (b) of this Section 5 is unavailable to an indemnified party or
insufficient in respect of any losses, claims, damages or liabilities, then each
indemnifying party under such paragraph, in lieu of indemnifying such
indemnified party thereunder, shall contribute to the amount paid or payable by
such indemnified party as a result of such losses, claims, damages or
liabilities in such proportion as is appropriate to reflect the relative fault
of the indemnifying party or parties on the one hand and of the indemnified
party or parties on the other hand in connection with the statements or
omissions that resulted in such losses, claims, damages or liabilities, as well
as any other relevant equitable considerations. The relative fault of the
Company and the Holders shall be determined by reference to, among other things,
whether the untrue or alleged untrue statement of a material fact or the
omission or alleged omission to state a material fact relates to information
supplied by the Company or by the Holders and the parties' relative intent,
knowledge, access to information and opportunity to correct or prevent such
statement or omission. The Holders' respective obligations to contribute
pursuant to this Section 5(d) are several in proportion to the respective
aggregate principal amount of Registrable Certificates of such Holder that were
registered pursuant to a Registration Statement.

                  (e) The Company and each Holder agree that it would not be
just or equitable if contribution pursuant to this Section 5 were determined by
pro rata allocation or by any other method of allocation that does not take
account of the equitable considerations referred to in paragraph (d) above. The
amount paid or payable by an indemnified party as a result of the losses,
claims, damages and liabilities referred to in paragraph (d) above shall be
deemed to include, subject to the limitations set forth above, any legal or
other expenses reasonably incurred by such indemnified party in connection with
investigating or defending any such action or claim. Notwithstanding the
provisions of this Section 5, no Holder shall be required to indemnify or
contribute any amount in excess of the amount by which the total price at which
Registrable Certificates were sold by such Holder exceeds the amount of any
damages that such Holder has otherwise been required to pay by reason of such
untrue or alleged untrue statement or omission or alleged omission. No person
guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of
the 1933 Act) shall be entitled to contribution from any person who was not
guilty of such fraudulent misrepresentation. The remedies provided for in this
Section 5 are not exclusive and shall not limit any rights or remedies which may
otherwise be available to any indemnified party at law or in equity.

                  The indemnity and contribution provisions contained in this
Section 5 shall remain operative and in full force and effect regardless of (i)
any termination of this Agreement,

<PAGE>   23
                                       22

(ii) any investigation made by or on behalf of the Initial Purchasers, any
Holder or any person controlling any Initial Purchaser or any Holder, or by or
on behalf of the Company, its officers or directors or any person controlling
the Company, (iii) acceptance of any of the Exchange Certificates and (iv) any
sale of Registrable Certificates pursuant to a Shelf Registration Statement.

                  6. Miscellaneous. (a) Rule 144 and Rule 144A. For so long as
the Company is subject to the reporting requirements of Section 13 or 15 of the
1934 Act, the Company covenants that it will file the reports required to be
filed by it under Section 13(a) or 15(d) of the 1934 Act and the rules and
regulations adopted by the SEC thereunder, that if it ceases to be so required
to file such reports, it will upon the request of any Holder of Registrable
Certificates (i) make publicly available such information as is necessary to
permit sales pursuant to Rule 144 under the 1933 Act, (ii) deliver such
information to a prospective purchaser as is necessary to permit sales pursuant
to Rule 144A under the 1933 Act, and (iii) take such further action that is
reasonable in the circumstances, in each case, to the extent required from time
to time to enable such Holder to sell its Registrable Certificates without
registration under the 1933 Act within the limitation of the exemptions provided
by (x) Rule 144 under the 1933 Act, as such Rule may be amended from time to
time, (y) Rule 144A under the 1933 Act, as such Rule may be amended from time to
time, or (z) any similar rules or regulations hereafter adopted by the SEC. Upon
the reasonable request of any Holder of Registrable Certificates, the Company
will deliver to such Holder a written statement as to whether it has complied
with such requirements.

                  (b) Purchase and Sale of Certificates. The Company shall not,
and the Company shall use its best efforts to cause its affiliates (as defined
in Rule 405 under the 1933 Act) not to, purchase and then resell or otherwise
transfer any Initial Certificates.

                  (c) Trustees. The Trustees shall take such action as may be
reasonably requested by the Company in connection with the Company satisfying
its obligations arising under this Agreement; provided that the Company shall
provide to the Trustee (as Trustee and in its individual capacity) such
indemnity in connection therewith as the Trustee may reasonably request, subject
to any separate fee arrangement between the Company and the Trustee.

                  (d) No Inconsistent Agreements. The Company has not entered
into nor will the Company on or after the date of this Agreement enter into any
agreement which is inconsistent with the rights granted to the Holders of
Registrable Certificates in this Agreement or otherwise conflicts with the
provisions hereof.

                  (e) Amendments and Waivers. Except as otherwise expressly
permitted in the Pass Through Trust Agreements or the Successor Pass Through
Trust Agreements, the provisions of this Agreement, including the provisions of
this sentence, may not be amended, modified or supplemented, and waivers or
consents to departures from the provisions hereof may not be given unless the
Company has obtained the written consent of Holders of at least a majority in
aggregate principal amount of the outstanding Registrable Certificates affected
by such amendment, modification, supplement, waiver or departure; provided,
however, that no amendment, modification, supplement or waiver or consent to any
departure from the provisions

<PAGE>   24
                                       23

of Section 5 hereof shall be effective as against any Holder of Registrable
Certificates unless consented to in writing by such Holder.

                  (f) Notices. All notices and other communications provided for
or permitted hereunder shall be made in writing by hand-delivery, registered
first-class mail, telex, telecopier, or any courier guaranteeing overnight
delivery (i) if to a Holder, at the most current address given by such Holder to
the Company by means of a notice given in accordance with the provisions of this
Section 6(f), which address initially is, with respect to the Initial
Purchasers, the address set forth in the Purchase Agreement; and (ii) if to the
Company, initially at the Company's address set forth in the Purchase Agreement
and thereafter at such other address, notice of which is given in accordance
with the provisions of this Section 6(f).

                  All such notices and communications shall be deemed to have
been duly given when received or, if made by facsimile or telecommunication
transmission, when received unless received outside of business hours, in which
case on the next open of business on a Business Day.

                  Copies of all such notices, demands, or other communications
shall be concurrently delivered by the person giving the same to the Trustees,
at the address specified in the Pass Through Trust Agreements or the Successor
Pass Through Trust Agreements, as the case may be.

                  (g) Successors and Assigns. This Agreement shall inure to the
benefit of and be binding upon the successors, assigns and transferees of each
of the parties, including, without limitation and without the need for an
express assignment, subsequent Holders; provided that nothing herein shall be
deemed to permit any assignment, transfer or other disposition of Registrable
Certificates in violation of the terms hereof or of the Purchase Agreement or
the Pass Through Trust Agreements or Successor Pass Through Trust Agreements. If
any transferee of any Holder shall acquire Registrable Certificates, in any
manner, whether by operation of law or otherwise, such Registrable Certificates
shall be held subject to all of the terms of this Agreement, and by taking and
holding such Registrable Certificates, such Person shall be conclusively deemed
to have agreed to be bound by and to perform all of the terms and provisions of
this Agreement, including the restrictions on resale set forth in this Agreement
and, if applicable, the Purchase Agreement, and such Person shall be entitled to
receive the benefits hereof. Upon the occurrence of the transfers contemplated
by the Assignment and Assumption Agreements (as defined in the Pass Through
Trust Agreements), the trustee of each Original Trust shall (without any further
act) be deemed to have transferred all of its rights, title and interest in and
to this Agreement to the trustee of the corresponding Successor Trust and,
thereafter, the trustee of each Successor Trust shall be deemed to be the
"Trustee" of such Successor Trust with the rights and obligations of a "Trustee"
hereunder. The Initial Purchasers (in their capacity as Initial Purchasers)
shall have no liability or obligation to the Company with respect to any failure
by any other Holder to comply with, or any breach by any other Holder of, any of
the obligations of such other Holder under this Registration Rights Agreement.

<PAGE>   25
                                       24

                  (h) Third Party Beneficiaries. The Holders shall be third
party beneficiaries to the agreements made hereunder and to the obligations of
the Company hereunder and shall have the right to enforce such agreements and
obligations directly to the extent any such Holder deems such enforcement
necessary or advisable to protect the rights expressed to be for its benefit
hereunder.

                  (i) Counterparts. This Agreement may be executed in any number
of counterparts and by the parties hereto in separate counterparts, each of
which when so executed shall be deemed to be an original and all of which taken
together shall constitute one and the same agreement.

                  (j) Headings. The headings in this Agreement are for
convenience of reference only and shall not limit or otherwise affect the
meaning hereof.

                  (k) GOVERNING LAW. THIS AGREEMENT SHALL BE GOVERNED BY AND
CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK.

                  (l) Severability. In the event that any one or more of the
provisions contained herein, or the application thereof in any circumstance, is
held invalid, illegal or unenforceable, the validity, legality and
enforceability of any such provision in every other respect and of the remaining
provisions contained herein shall not be affected or impaired thereby.

<PAGE>   26
                                       25

                  IN WITNESS WHEREOF, the parties have executed this Agreement
as of the date first written above.

                                          AMERICA WEST AIRLINES, INC.

                                          By:  /s/ signature
                                               ---------------------------------
                                               Name:
                                               Title:

                                          WILMINGTON TRUST COMPANY,
                                            not in its individual capacity
                                            but solely as Trustee under
                                            each of the Original Trusts

                                          By:  /s/ signature
                                               ---------------------------------
                                               Name:
                                               Title:

Confirmed and accepted as of
the date first above written:

MORGAN STANLEY & CO. INCORPORATED
SALOMON SMITH BARNEY INC.
DEUTSCHE BANK SECURITIES INC.
DONALDSON, LUFKIN & JENRETTE SECURITIES CORPORATION
MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED

By:      MORGAN STANLEY & CO. INCORPORATED

         By: /s/ signature
             ----------------------------------
             Name:
             Title:

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