Document:

<PAGE>   1
                                                                    EXHIBIT 10.3

When recorded return to:
ON Semiconductor
Semiconductor Components Industries, LLC
Law Department, M/D A700
5005 E. McDowell Road
Phoenix, AZ 85008
Attn: Judith A. Boyle, Assistant General Counsel

                                  DEED OF TRUST

TRUSTOR:          James Thorburn and Jacqueline Thorburn, husband and wife
                  8635 N. 65th Street
                  Paradise Valley, AZ 85253

BENEFICIARY:      Semiconductor Components Industries, LLC, a Delaware
                  limited liability company
                  5005 E. McDowell Road
                  Phoenix, AZ 85008

TRUSTEE:          Old Republic Title Agency, an Arizona corporation
                  3200 N. Central Avenue
                  Phoenix, AZ 85012

PROPERTY in Maricopa County, State of Arizona, described as:

            See Exhibit A attached hereto and incorporated herein by this
            reference.

This Deed of Trust made between the Trustor, Trustee and Beneficiary above
named,

            WITNESSETH: That Trustor IRREVOCABLY GRANTS, BARGAINS, SELLS,
CONVEYS, TRANSFERS and ASSIGNS to TRUSTEE, IN TRUST WITH POWER OF SALE, the
above described real property and all buildings and improvements thereon or that
may hereafter be erected thereon, all fixtures, and all equipment, machinery,
and apparatus of every kind and nature now located on said property or hereafter
attached to or used in connection with the property described above, all of
which Trustor represents are and shall be and are intended to be a part of the
realty, together with all permits, licenses, grazing and range rights relating
to or pertaining to said property, if any, together with all and singular the
tenements, hereditaments, and appurtenances, and all of the rents, issues and
profits thereof, and the reversion and reversions, remainder and remainders, and
together with all water rights thereunto belonging, to have and hold unto
Trustee, its successors and assigns forever (hereinafter called "Trust
Property").

            FOR THE PURPOSE OF SECURING:

                                                                               1
<PAGE>   2
            (1) To secure performance of the covenants and agreements herein set
forth and payment of Trustor's Note dated the 21st day of July, 2000, in the sum
of One Million Four Hundred Sixty-Nine Thousand Dollars ($1,469,000) and
interest as specified therein, and any and all extensions, revisions or renewals
thereof in whole or in part.

            (2) Performance of each covenant, promise and agreement of Trustor
contained herein or incorporated herein by reference; and

            (3) Payment of all sums required to be made by Trustor pursuant to
the terms hereof. It is understood, however, by Trustor and Beneficiary that
Beneficiary shall not be required to make any such additional advances and/or
Loans and that, if any such advances and/or Loans are made, they will be made
only at such times and in such amounts as Beneficiary may, in its sole
discretion, determine.

           TO PROTECT THE PROPERTY AND SECURITY GRANTED BY THIS TRUST DEED, IT
IS AGREED:

            1. Trustor warrants that it is seized of good and merchantable fee
simple title to the Trust Property, subject only to reservations in the patent,
water right application, obligations arising in favor of water use or irrigation
associations or companies (none of the assessments of which are delinquent),
current taxes not delinquent, easements and restrictions of record. Trustor
acknowledges that all legal descriptions of real estate listed herein were
provided by Trustor, warrants the correctness of such descriptions, and agrees
that, in the event there does exist an error or defect in such legal
descriptions, Trustor authorizes Trustee to do all acts and things and execute
all documents deemed necessary by Beneficiary, proper and convenient for the
perfection, protection, preservation or enforcement of Beneficiary's rights
hereunder.

            2. Trustor agrees to pay all indebtedness secured hereby including
principal, interest, costs and attorney's fees in accordance with the terms of
each evidence of indebtedness.

            3. Trustor agrees to pay, before the same becomes delinquent, all
taxes, assessments, water and other charges levied or assessed upon or against
the Trust Property, and in addition all charges for gas, electricity and other
items furnished to or charged against the Trust Property.

            Trustor agrees to pay, prior to delinquency, any and all ground
rents and amounts payable under any Lease, trust deed, mortgage or other
instrument which may be an encumbrance on the Trust Property.

            4. Trustor agrees to keep the improvements now or hereafter located
on the Trust Property insured against loss by fire and other hazards and
casualties in such amounts and for such periods as may be required from time to
time by Beneficiary. Trustor also agrees to maintain and keep in force during
the term hereof flood hazard insurance as may be or may have been required by
Beneficiary or by law or regulation. Trustor agrees to pay the premiums on such
insurance, when due and prior to delinquency, and furnish proof of such payment
to Beneficiary. All insurance shall be carried in responsible insurance
companies approved by

                                                                               2
<PAGE>   3
Beneficiary. The policies shall be held by Beneficiary and shall have, at all
times, loss payable clauses attached thereto in favor of and approved by
Beneficiary.

            In the event of any loss or damage to the improvements, Trustor will
give immediate notice by mail to Beneficiary and make proper proof of loss (and
if not made by Trustor, Beneficiary may make the same). Beneficiary may require
that the payment for such loss be paid directly to Beneficiary only and not
jointly to Trustor and Beneficiary. Beneficiary may, at its option, apply the
payment to the reduction of the indebtedness secured hereby or may apply the
same to the restoration or repair of the property damaged. Trustor hereby
assigns to Beneficiary all such policies and the payments to be made thereunder.

            In the event of foreclosure of this Trust Deed, or exercise of the
power of sale given to Trustee, or acquisition of the title to the property by
Beneficiary or its assigns, all right, title, and interest of Trustor in and to
the policies and proceeds thereof and sums payable thereunder shall forthwith
pass automatically to the purchaser of said property.

            5. Trustor agrees to keep the buildings and other improvements on
the property at all times in good condition and repair. All apparatus and
machinery shall be kept in good working order and properly serviced and
repaired. Trustor will not allow nor commit any waste, and will not demolish nor
structurally alter any buildings on the property, and will do no act to injure
or depreciate the value of such property. The property and buildings thereon
shall be kept in a reasonably clean, safe and sanitary condition and shall not
be allowed to become dilapidated or rundown.

            Trustor agrees that it will not remove or allow to be removed any
fixture or fixtures from the Trust Property without the prior written consent of
Beneficiary. Trustor further agrees that in adding any new fixtures or in
substituting fixtures on the Trust Property, prior proof will be furnished
Beneficiary that no security exists therein.

            6. In the event Trustor fails to make any payment required to be
made by it hereunder, or fails to keep the property so insured, or fails to keep
the property so repaired, or fails to perform any of its other obligations
hereunder, Beneficiary may make any such payment, obtain any such insurance,
make any such repairs (Trustor hereby grants Beneficiary the right to go upon
the premises for such purpose), or remedy any other default of Trustor. All
expenditures made by Beneficiary shall be prima facie evidence of the necessity
therefor and reasonableness thereof. Such expenditures, together with all
incidental costs of Beneficiary, including reasonable attorney's fees if
incurred, shall be immediately due and payable by Trustor to Beneficiary, shall
bear interest until paid at the rate of two percent (2%) per month, and shall be
secured by this Trust Deed.

            7. Trustee and Beneficiary and their officers, employees, and agents
may enter upon and inspect the property at any reasonable time or times.

            8. The proceeds of any judgment, award or settlement in any
condemnation or eminent domain proceeding or on account of injury to the
property by reason of public use, or by reason of private trespass, or other
injury to the property, shall be paid to Beneficiary, who may at its option,
either reapply the proceeds to reduce the indebtedness secured hereby (whether

                                                                               3
<PAGE>   4
matured or to mature in the future) or be released to Trustor. Trustor hereby
assigns and transfers to Beneficiary all such amounts and proceeds and agrees
that Beneficiary may receipt for the same on behalf of Trustor.

            9. Trustor by execution of this Deed of Trust assigns and transfers
to Beneficiary all of Trustor's right, title and interest in and to all leases,
rents, profits or income from the Trust Property and each and every part
thereof, including all present and future leases or rental agreements, which
assignment and transfer may be enforced by Beneficiary only upon any default by
Trustor, existing under this agreement, by any one or more of the following
methods: (a) appointment of a receiver; (b) Beneficiary taking possession of the
Trust Property; (c) Beneficiary collecting any moneys payable under leases or
rental agreements directly from the parties obligated for payment; (d)
injunction; or (e) any other method permitted by law.

            Unless and until Beneficiary shall elect to collect said rents and
rentals, the same shall be collected by Trustor, but Beneficiary may at any
time, after Trustor's default, collect all such rents and rentals and Trustor
agrees not to hinder or delay Beneficiary in collecting the same.

            Any rents or rentals received by Beneficiary shall be applied first
to the cost of collection, second to any expenses Beneficiary may expend in
making the property ready for or satisfactory to any lessee or tenant, and the
remainder shall be applied on the indebtedness secured hereby (whether matured
or unmatured) as Beneficiary may elect.

            Trustor shall not consent to the cancellation or surrender of any
lease on the property, or any portion thereof, having an unexpired term of two
(2) years or more, or decrease the rental payable under any lease, or receive or
collect more than two (2) month's rent in advance, and Trustor agrees not to
default in performing its obligations under all leases on the property.

            10. Time is of the essence of this Trust Deed. No failure on the
part of Beneficiary to exercise any of its rights hereunder shall be construed
as a waiver of or prejudice its rights in the event of any other subsequent
default or breach. No delay on the part of Beneficiary in exercising any of its
rights hereunder shall preclude it from the exercise thereof at any time during
the continuance of any such default. The acceptance of late payments shall not
waive the "time is of the essence" provision. All rights and remedies of
Beneficiary are cumulative and concurrent, and may be exercised singly,
severally or concurrently as Beneficiary may elect.

            11. In the event the indebtednesses secured hereby or this Trust
Deed is placed in the hands of attorneys for collection or foreclosure, then
Trustor agrees to pay reasonable attorney's fees to Beneficiary, in addition to
the amount due thereon, together with all costs and expenses incurred by
Beneficiary in the collection and foreclosure thereof, and together with the
cost of a title search, the payment of which sums are secured by this Trust
Deed.

            12. In the event of any default by Trustor in the payment of the
indebtedness secured hereby; or in the event of any default of Trustor in
performing any of its obligations hereunder or any obligations under any loan
agreement or other document executed by Trustor

                                                                               4
<PAGE>   5
and held by Beneficiary; or in the event Trustor, or any guarantor or surety
shall be adjudicated insolvent or bankrupt or any proceedings are filed by or
against them or any of them in the nature of bankruptcy or reorganization or
arrangement with creditors; or in the event any proceeding is filed to foreclose
or any Notice of Trustee's Sale is recorded on any other lien on the Trust
Property (whether junior or senior to this Trust Deed); or in the event any Writ
or Attachment shall be filed or levied against the Trust Property; or in the
event Trustor abandons the Trust Property or leaves the same unattended or
unprotected; or in the event Beneficiary shall deem the security provided by
this Trust Deed inadequate or in danger of being impaired or diminished from any
cause whatsoever (any of such events being an event of default hereunder); then
and in any such event Beneficiary may declare the entire debt and all
indebtedness of Trustor to Beneficiary to be immediately due and payable without
notice to Trustor. Beneficiary may thereupon, at its option, and without prior
notice and without affecting the lien of this Trust Deed, do any one or more of
the following: enter upon the premises and inspect, repair, improve and maintain
the same, rent or lease the premises or portions thereof as Beneficiary shall
see fit, and perform such other acts thereon as Beneficiary may deem necessary
or advisable; sue for all or part of the indebtedness owing from Trustor to
Beneficiary without affecting or without losing the security of this Trust Deed;
foreclose this Trust Deed as a mortgage in the manner provided by law; cause the
exercise of the power of sale granted herein; bring an action for damages, or
exercise such other remedies or combination of remedies Beneficiary may have
under law and equity.

            13. Upon payment in full of all sums secured hereby and performance
of all obligations of Trustor hereunder, the lien of this Trust Deed upon the
Trust Property shall be released by reconveyance by Deed of Release, which said
reconveyance and release shall be without warranty and shall operate to reconvey
the estate vested in Trustee hereby.

            Beneficiary may, at any time, without notice, release any person
liable for payment of any indebtedness secured hereby, release portions of the
Trust Property from this Trust Deed, or extend or modify the time for payment of
the indebtedness secured hereby by agreement with Trustor or by agreement with
subsequent owners of said property, and any such release, extension or
modification shall not affect the personal liability of any person for the
payment of said indebtedness or the lien of this Trust Deed upon the remaining
portion of said property.

            At any time, without liability therefor and without notice, and
without affecting the personal liability of Trustor of any other person for
payment of the indebtedness secured hereby, Trustee may, with the consent of
Beneficiary: (a) release and reconvey by Deed of Release any part of the Trust
Property from the lien hereof; (b) consent to the making and recording of any
maps or plats of the Trust Property; (c) join in granting any easement on the
Trust Property; or (d) join in any extension agreement or any agreement
subordinating or modifying the lien or charge hereof. If Trustee shall perform
any such acts or execute complete or partial reconveyances it shall be paid a
fee in accordance with its established fees and charges therefor.

            If reconveyance by Deed of Release is to be made by Trustee,
Beneficiary shall deliver the original of this Trust Deed and the note secured
hereby to Trustee with a request for reconveyance by Deed of Release.

                                                                               5
<PAGE>   6
            The Grantee in any Deed of Release executed pursuant to this Trust
Deed may be described as "the person or persons legally entitled thereto" and
the recitals therein of any matters or facts shall be conclusive proof of the
truthfulness thereof.

            14. In the event of default hereunder, Beneficiary, if it desires
Trustee to exercise the power of sale granted hereby, shall execute and deliver
to Trustee a written declaration of default and demand for sale and shall
surrender to Trustee this Trust Deed, the note secured hereby and all documents
evidencing any expenditures hereunder, together with such other documents as
Trustee may require. Beneficiary shall also execute and deliver to Trustee all
notices to Trustor that must be signed by Beneficiary. Upon receipt thereof,
Trustee shall sell the Trust Property as provided by law. Trustee may postpone
the sale as provided by law. After sale of the Trust Property, Trustee shall
deliver its deed to the purchaser conveying the property so sold but without any
covenant or warranty, express or implied. The recital in any such deed of any
matters or facts, stated either specifically or in general terms, or as
conclusions of law or facts, shall be conclusive proof of the truthfulness
thereof.

            15. Beneficiary may, at any time, request cancellation of Trustee's
Notice of Sale, whereupon Trustee shall execute and record, or cause to be
recorded, a Cancellation of Notice of Sale in the same county in which the
Notice of Sale was recorded. The exercise by Beneficiary of this right shall not
constitute a waiver of any default then existing or subsequently occurring.

            In the event this Trust Deed and the indebtedness and obligations
secured hereby are reinstated in the manner provided by law, Beneficiary shall
forthwith notify Trustee thereof as provided by law. Upon such notification,
Trustee shall record, or cause to be recorded, a Cancellation of Notice of Sale
in the same county in which the Notice of Sale was recorded within the period
then required by law.

            16. In the event of default hereunder, at any time before the Trust
Property has been sold pursuant to the power of sale granted hereby, this Trust
Deed may be foreclosed in the manner provided by law for the foreclosure of
mortgages on real property.

            17. In the event of default hereunder, Beneficiary shall be entitled
to the appointment of a Receiver to take charge of the property, collect the
rents, issues and profits therefrom, care for and repair the same, improve the
same when necessary or desirable, lease and rent the property or portion thereof
(including leases existing beyond the term of receivership), plant, cultivate
and harvest crops thereon, and otherwise use and utilize the property and to
have such other duties as may be fixed by the Court.

            Trustor specifically agrees that the Receiver may be appointed
without any notice to Trustor whatsoever, and the Court may appoint a Receiver
without reference to matters normally taken into account by Courts in the
discretionary appointment of Receivers, it being the intention of Trustor to
hereby authorize the appointment of a Receiver when Trustor is in default and
Beneficiary has requested the appointment of a Receiver. Trustor hereby agrees
and consents to the appointment of the particular person or firm (including an
officer or employee of Beneficiary) designated by Beneficiary as Receiver and
hereby waives its rights to suggest or nominate any person or firm as Receiver
in opposition to that designated by Beneficiary.

                                                                               6
<PAGE>   7
            18. Beneficiary may substitute another Trustee herein named to
exercise the rights, powers and duties granted by law and contained herein. Upon
such appointment, and without the necessity of a conveyance to the successor
Trustee, the latter shall be vested with all the title, powers and duties
conferred upon the Trustee herein named.

            19. Beneficiary or any purchaser at Trustee's sale or at any
foreclosure sale may, if it so elects, be subrogated to and succeed to all the
rights of Trustor under any or all leases on the property or portions thereof.
Beneficiary may, if it so elects, subordinate its rights hereunder to any lease
on the property, or a portion thereof, and keep the lease in effect through and
after any foreclosure action or Trustee's sale.

            20. Beneficiary shall be subrogated to the lien, notwithstanding its
release of record, of any prior mortgage, trust deed or other encumbrance paid
or discharged from the proceeds of the note secured hereby, or from any advance
made by Beneficiary.

            21. In the event of the passage after the date of this Trust Deed of
any law levying any tax upon this Trust Deed or the debt secured hereby, which
Beneficiary is obliged to pay, then Trustor agrees to pay said tax or reimburse
Beneficiary for the payment of the same, provided that Trustor shall not be
obligated to pay any amount which would be considered as interest at a rate
higher than allowed by law, and provided further that in the event of the
enactment of any such law Beneficiary shall have the right, at its option, to
declare the indebtedness secured hereby to be immediately due and payable.

            22. Trustor agrees that in the event of a sale, assignment,
encumbrance, or any other transfer of the Trust Property described herein or any
portion thereof or interest therein, whether such transfer is voluntary or
involuntary, or in the event Trustor contracts for the sale of said property, or
any portion thereof or interest therein, then and in that event, Beneficiary
may, at its option, accelerate the time for payment of all indebtedness secured
hereby and demand full repayment thereof, or give its written consent to such
transfer on such terms and conditions as Beneficiary may in its sole discretion
require.

            23. Trustee may, but shall be under no obligation or duty to, appear
in or defend any action or proceeding purporting to affect the security hereof
or the rights or powers of Beneficiary or Trustee. If Trustee shall take such
action at the request of Beneficiary, it shall be paid therefor in accordance
with its established fees and charges and shall be reimbursed for its costs and
expenses actually incurred, including attorney's fees.

            24. The Trust created hereby is irrevocable by Trustor. Trustee
accepts this Trust Deed, duly executed and acknowledged, is made a public record
as provided by law, but acceptance is not required as a condition to the
validity hereof, and this Trust Deed is effective upon delivery. Trustee shall
not be obligated to notify any party hereto of pending sale under any other
trust deed, or any action or proceeding in which Trustor, Beneficiary or Trustee
shall be a party, except as required by law.

            25. The word "Trustor" and the language of this instrument shall,
where there is more than one Trustor, be construed as plural and be binding
equally on Trustors. The obligations of Trustors hereunder and under the note
secured hereby shall be joint and several.

                                                                               7
<PAGE>   8
This Trust Deed applies to, is binding upon, and inures to the benefit of all
parties hereto, their heirs, executors, administrators, successors and assigns.
The term "Beneficiary" shall include not only the original Beneficiary
hereunder, but also any future owner and holder of the note secured hereby.

            26. If any provision hereof should be held unenforceable or invalid,
in whole or in part, then such unenforceable or void provision or part shall be
deemed separable from the remaining provisions hereof and shall in no way affect
the validity of this Trust Deed.

            27. Notwithstanding any provisions herein, or in the note, notes or
other evidences of indebtedness, secured hereby, or in any related agreement
between Trustor and Beneficiary, the total liability of Trustor for payments in
the nature of interest shall not exceed the limits now imposed by the laws of
the State of Arizona.

            28. Trustor requests that a copy of any Notice of Sale hereunder be
mailed to him at his mailing address set forth below. Any notices required to be
given to Trustor by mailing shall be effective and complete when mailed and
shall be mailed to the address set forth below. Lack of receipt thereof shall in
no way invalidate the notice or any sale by Trustee hereunder. If Trustor
desires to change the address to which notices shall be mailed, such change
shall be accomplished by a request as provided by law.

            29. Trustee shall be paid for all acts performed by it hereunder or
in connection herewith in accordance with its established fees and charges. All
such fees and charges shall be paid by Trustor, and if Beneficiary shall advance
any such fees or charges, Trustor shall reimburse Beneficiary for same on
demand. Payment thereof is secured by this Trust Deed.

           IN WITNESS WHEREOF, Trustor has executed this Deed of Trust this 20th
day of July, 2000.

/s/ JAMES THORBURN
------------------
James Thorburn                             8635 N. 65th Street
                                           Paradise Valley, AZ 85253

/s/ JACQUELINE THORBURN BY JAMES THORBURN
ATTORNEY IN FACT
-----------------------------------------
Jacqueline Thorburn                        8635 N. 65th Street
                                           Paradise Valley, AZ 85253

                                                                               8
<PAGE>   9
STATE OF ARIZONA        )
                        ) ss.
County of Maricopa)

            The foregoing instrument was acknowledged before me this 20th day of
July, 2000, by James Thorburn.

           IN WITNESS HEREOF, I have hereunto set my hand and official seal.

                                    /s/ PATTI SHAW
                                    ---------------
                                    Notary Public

My commission expires:

August 12, 2002

STATE OF ARIZONA        )
                        ) ss.
County of Maricopa)

            The foregoing instrument was acknowledged before me this 20th day of
July, 2000, by James Thorburn, as attorney in fact for Jacqueline Thorburn.

           IN WITNESS HEREOF, I have hereunto set my hand and official seal.

                                    /s/ PATTI SHAW
                                    ---------------
                                    Notary Public

My commission expires:

August 12, 2002

                                                                               9
<PAGE>   10
                                    EXHIBIT A

Lot 23, CAMELBACK COUNTRY ESTATES UNIT ONE, according to Book 218 of Maps, page
13, records of Maricopa County, Arizona.<PAGE>   1
                                                                 Exhibit 10.38

                                           *** Text Omitted and Filed Separately
                                                Confidential Treatment Requested
                                          Under 17 C.F.R. Sections 200.80(b)(4),
                                                            200.83 and 240.24b-2

                                AMENDMENT NO. 4

                                       TO

                        THE A319/A320 PURCHASE AGREEMENT
                         Dated as of September 12, 1997

                             BETWEEN AVSA S.A.R.L.

                                      AND

                          AMERICA WEST AIRLINES, INC.

This Amendment No. 4 (hereinafter referred to as the "Amendment") entered into
as of July 1, 2000 by and between AVSA S.A.R.L., a societe a responsabilite
limitee organized and existing under the laws of the Republic of France, having
its registered office located at 2, Rond Point Maurice Bellonte, 31700 Blagnac,
France (hereinafter referred to as the "Seller") and AMERICA WEST AIRLINES,
INC., a corporation organized and existing under the laws of the State of
Delaware, United States of America, having its principal corporate office
located at Phoenix Sky Harbor International Airport, 4000 East Sky Harbor
Boulevard, Phoenix, Arizona 85034, U.S.A. (hereinafter referred to as the
"Buyer").

                                  WITNESSETH:

WHEREAS, the Buyer and the Seller have entered into an A319/A320 Purchase
Agreement, dated as of September 12, 1997 (which agreement, as previously
amended by and supplemented with all Exhibits, Appendices, Letter Agreements and
amendments (including Amendment No. 1 executed on April 27, 1998, Amendment No.
2 executed on December 9, 1998 and Letter Agreement No. 1 to Amendment No. 2
executed on May 24, 1999. Amendment No. 3 together with all Letter Agreements
thereto executed on October 14, 1999, is hereinafter called the "Agreement"),
which Agreement relates to, inter alia, the sale by the Seller and the purchase
by the Buyer of certain firmly ordered Airbus Industrie A318-100, A319-100 and
A320-200 model aircraft;

WHEREAS, the Seller desires to sell and the Buyer desires to purchase four (4)
incremental A319-100 aircraft (the "Firmed A319 Aircraft");

WHEREAS, to accomplish such sale, the Buyer will agree to (i) exercise its
option rights with respect to four (4) Option Aircraft, thereby reducing the
number of Option Aircraft from ...***... and ...***... each under ...***... to
Amendment No. 3 to the Agreement in connection with the Buyer's purchase of the
Firmed A319 Aircraft;

                                               *CONFIDENTIAL TREATMENT REQUESTED

                                     AM4-1

<PAGE>   2
WHEREAS, the Buyer and the Seller further agree in this Amendment to amend
certain provisions under the Agreement relating to the sale of the Aircraft and
the Additional Aircraft; and

WHEREAS, capitalized terms used herein and not otherwise defined in this
Amendment will have the meanings assigned to them in the Agreement. The terms
"herein," "hereof," and "hereunder" and words of similar import refer to this
Amendment. ...***...

NOW THEREFORE IT IS AGREED AS FOLLOWS:

1.   SCOPE

     Pursuant to the terms and conditions contained in this Amendment, the
     Seller agrees to sell and the Buyer agrees to purchase the Firmed A319
     Aircraft. Except as otherwise set forth herein, all terms and conditions
     applicable to A319 Additional Aircraft shall apply to the Firmed A319
     Aircraft and the Firmed A319 Aircraft shall be deemed A319 Additional
     Aircraft under the Agreement.

2.   OPTION AIRCRAFT EXERCISE ...***...

2.1  ...***...

2.2  The parties further agree that ...***... scheduled, ...***... for delivery
     ...***... as set forth in Subparagraph 2.1 of ...***... are hereby
     cancelled and replaced with ...***... with delivery ...***...

2.3  To reflect the changes set forth in Subparagraph 2.1 and 2.2 above, the
     Option Aircraft delivery schedule set forth in Subparagraph 2.1 of
     ...***... is hereby cancelled and replaced with the Option Aircraft
     delivery schedule set forth in Attachment A hereto.

                                               *CONFIDENTIAL TREATMENT REQUESTED

                                     AM4-2

<PAGE>   3
3.   DELIVERY SCHEDULE FOR THE FIRMED A319 AIRCRAFT

     Notwithstanding the provisions of Subparagraph 4.2.A.4 of Amendment No. 3
     to the Agreement, the A319 Additional Aircraft Delivery Schedule applicable
     to the A319 Additional Aircraft is as set forth immediately below.

     The Seller will have the A319 Additional Aircraft ready for delivery at
     Daimler-Chrysler's works near Hamburg, Germany, and the Buyer will accept
     the same, during the months set forth below:

<TABLE>
<CAPTION>
               AIRCRAFT NO.              MONTH/YEAR OF DELIVERY
               ------------              ----------------------
<S>                                      <C>
                    1                           ...***...
                    2                           ...***...
                    3                           ...***...
                    4                           ...***...
</TABLE>

     The Seller will, no earlier than ...***... provide the Buyer with the
     ...***... such A319 Additional Aircraft will be tendered for delivery to
     the Buyer in a condition which is "ready for delivery" as set forth in
     Subparagraph 9.3 of the Agreement in accordance with the Agreement. The
     Seller shall give the Buyer not less than ...***... notice of the date
     on which the A319 Additional Aircraft will be tendered for delivery to the
     Buyer in a condition which is "ready for delivery" as set forth in
     Subparagraph 9.3 of the Agreement in accordance with the Agreement.

4.   ...***... FOR THE FIRMED A319 AIRCRAFT

4.1  ...***...

          (i)  ...***... and

          (ii) ...***...

4.2  All other terms and conditions of ...***... remain unchanged.

4.3  The Seller acknowledges that the ...***... to each Firmed A319 Aircraft has
     been applied against the Option Aircraft Predelivery Payment applicable to
     such Aircraft and that it has received from the Buyer, as of the date
     hereof, Option Aircraft Predelivery Payments in the ...***... for each of
     the Firmed A319 Aircraft in accordance with ...***...

                                               *CONFIDENTIAL TREATMENT REQUESTED

                                     AM4-3

<PAGE>   4
5.   ADDITIONAL TERMS AND CONDITIONS FOR THE FIRMED A319 AIRCRAFT

     ...***...

5.1  ...***...

     The Seller will provide to the Buyer a credit memorandum in the amount of
     ...***...

     ...***...

5.2  ...***...

     The Seller will provide to the Buyer a credit memorandum in the amount of
     ...***...

     ...***...

     ...***...

6.   ...***...

     ...***...

     ...***...

                                              * CONFIDENTIAL TREATMENT REQUESTED

                                     AM4-4
<PAGE>   5
7.   MISCELLANEOUS ITEMS

     The following provisions of Amendment No. 3 to the Agreement shall be
     amended as follows:

7.1  The last line of Subparagraph 3.2.A.2.1 shall be deleted and replaced by
     the following:

     QUOTE

     ...***...

     UNQUOTE

7.2  Subparagraph 4.1.A.(ix) shall be deleted and replaced by the following:

     QUOTE

     (ix) Clauses 16, 17, 18 (except that reference to Clause 9 shall mean the
          applicable A319 Additional Aircraft delivery schedule herein and that
          reference to Exhibits B1 and B2 shall mean Exhibit B-3 of this
          Amendment), 19, 20, 21 and 22.

     UNQUOTE

7.3  The words

     QUOTE

     ...***...

     UNQUOTE

     set forth in Subparagraphs 4.1.C.(i), 5.1.C.(i) and 6.1.C(i) shall be
     deleted and replaced with the following words

     QUOTE

     ...***... therein

     UNQUOTE

                                               *CONFIDENTIAL TREATMENT REQUESTED

                                     AM4-5
<PAGE>   6
8.   EFFECT OF THE AMENDMENT

8.1  This Amendment contains the entire agreement between the parties with
     respect to the subject matter hereof and supercedes any previous
     understanding, commitments or representations whatsoever, whether oral or
     written (including, without limitation, that certain ...***... (Reference
     AVSA 5257.4)) between the Buyer and the Seller.

8.2  The Agreement will be deemed amended to the extent provided in the
     Amendment and, except as specifically amended hereby, will continue in full
     force and effect in accordance with its original terms. Both parties agree
     that this Amendment shall constitute an integral, nonseverable part of the
     Agreement and be governed by its provisions, except that if the Agreement
     and this Amendment have specific provisions that are inconsistent, the
     specific provisions contained in this Amendment will govern.

9.   CONFIDENTIALITY

     The Seller and the Buyer (including their employees, agents and advisors)
     agree to keep the terms and conditions of this Amendment strictly
     confidential, except as required by applicable law or pursuant to legal
     process. The Seller and the Buyer will consult prior to any public
     disclosure regarding this Amendment.

10.  GOVERNING LAW

     THIS AMENDMENT AND THE AGREEMENTS CONTEMPLATED HEREBY WILL BE GOVERNED BY
     AND CONSTRUED AND THE PERFORMANCE THEREOF WILL BE DETERMINED IN ACCORDANCE
     WITH THE PROVISIONS OF SUBPARAGRAPH 22.3 OF THE AGREEMENT.

                                              * Confidential Treatment Requested

                                     AM4-6

<PAGE>   7
     If the foregoing correctly sets forth our understanding, please execute the
original and one (1) copy hereof in the space provided below and return a copy
to the Seller.

                                             Very truly yours,

                                             AVSA S.A.R.L.

                                             By: /s/ Francois Besnier
                                                 -------------------------------
                                             Its:  C.E.O.
                                                  ------------------------------
                                             Date:
                                                   -----------------------------

Accepted and Agreed,

AMERICA WEST AIRLINES, INC.

By: /s/ Bernard L. Han
    -------------------------------
Its:  Senior VP, Planning
     ------------------------------
Date: 6/30/00
      -----------------------------

                                     AM4-7
<PAGE>   8
                                Attachment A to Amendment No. 4 to the Agreement

                       OPTION AIRCRAFT DELIVERY SCHEDULE

<TABLE>
<CAPTION>
Year/Qtr            ...***...           ...***...             TOTAL
---------           ---------           ---------             -----
<S>                 <C>                 <C>                 <C>
 ...***...
 ...***...
 ...***...
 ...***...
 ...***...
 ...***...
 ...***...                               ...***...           ...***...
 ...***...           ...***...           ...***...           ...***...
 ...***...           ...***...           ...***...           ...***...
 ...***...           ...***...           ...***...           ...***...
 ...***...
 ...***...           ...***...           ...***...           ...***...
 ...***...           ...***...           ...***...           ...***...
 ...***...           ...***...           ...***...           ...***...
 ...***...           ...***...                               ...***...
TOTAL               ...***...           ...***...           ...***...
</TABLE>

Note:  ...***...

                                              * CONFIDENTIAL TREATMENT REQUESTED

                                     AM4-8

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00017-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00017-of-00352.parquet"}]]