FORMS OF PASS THROUGH TRUST SUPPLEMENTS

Published on September 17, 1996


EXHIBIT 4.56





TRUST SUPPLEMENT NO. 1996-A1
DATED AS OF SEPTEMBER 1, 1996
TO
PASS THROUGH TRUST AGREEMENT
DATED AS OF FEBRUARY 1, 1993


SOUTHWEST AIRLINES CO.
AND
WILMINGTON TRUST COMPANY, AS TRUSTEE

$113,136,000.00

TRUST SUPPLEMENT


This Trust Supplement No. 1996-A1, dated as of September 1, 1996 (the
"Trust Supplement") between Southwest Airlines Co., a Texas corporation (the
"Company") and Wilmington Trust Company, a Delaware banking corporation (the
"Trustee"), to the Pass Through Trust Agreement dated as of February 1, 1993,
between the Company and the Trustee (the "Basic Agreement"),

WITNESSETH:

WHEREAS, the Company and the Trustee have heretofore executed and
delivered the Basic Agreement, unlimited as to the aggregate principal amount
of Certificates (unless specified herein capitalized terms used herein without
definition having the respective meanings specified heretofore in the Basic
Agreement) which may be issued thereunder;

WHEREAS, each of six Owner Trustees, each acting on behalf of an Owner
Participant, has agreed to issue, on a non-recourse basis, Equipment Notes,
among other things, to finance all or a portion of the outstanding debt portion
of the purchase price of the aircraft to be purchased by such Owner Trustee and
leased to the Company pursuant to the related Lease;

WHEREAS, pursuant to the terms and conditions of the Basic Agreement as
supplemented by this Trust Supplement (the "Agreement"), the Trustee shall
purchase such Equipment Notes issued by such Owner Trustees of the same tenor
as the Certificates issued hereunder and shall hold such Equipment Notes in
trust for the benefit of the Certificateholders;

WHEREAS, the Trustee hereby declares the creation of this Trust (the
"1996-A1 Trust") for the benefit of the Certificateholders, and the initial
Certificateholders as the grantors of the 1996-A1 Trust, by their respective
acceptances of the Certificates, join in the creation of this 1996-A1 Trust
with the Trustee;

WHEREAS, all of the conditions and requirements necessary to make this
Trust Supplement, when duly executed and delivered, a valid, binding and legal
instrument in accordance with its terms and for the purposes herein expressed,
have been done, performed and fulfilled, and the execution and delivery of this
Trust Supplement in the form and with the terms hereof have been in all
respects duly authorized;

WHEREAS, this Trust Supplement is subject to the provisions of the Trust
Indenture Act and shall, to the extent applicable, be governed by such
provisions;

NOW, THEREFORE, in consideration of the premises herein, it is agreed
between the Company and the Trustee as follows:





TRUST SUPPLEMENT NO. 1996-A1
-1-


ARTICLE I
THE CERTIFICATES

Section 1.01 The Certificates. Pursuant to Section 2.01 of the Basic
Agreement, there is hereby created a series of Certificates to be issued under
the Agreement to be distinguished and known as "Pass Through Certificates,
Series 1996-A1" (hereinafter defined as the "Series 1996-A1 Certificates").
Each Certificate represents a Fractional Undivided Interest in the 1996-A1
Trust created hereby. The terms and conditions applicable to the Series
1996-A1 Certificates are as follows:

1. The aggregate principal amount of the Series 1996-A1
Certificates that shall be authenticated under the Agreement (except for Series
1996-A1 Certificates authenticated and delivered pursuant to Section 3.03, 3.04
or 3.05 of the Basic Agreement) upon their initial issuance is $113,136,000.

2. The Cut-off Date is September 30, 1996.

3. The Regular Distribution Dates with respect to any payment
of Scheduled Payments are January 2 and July 2 in each year, commencing January
2, 1997, until payment of all of the Scheduled Payments to be made under the
Equipment Notes have been made.

4. The Scheduled Payments shall be as set forth in Exhibit C
hereto.

5. The Special Distribution Dates are as follows: (i) in the
case of an early redemption of Equipment Note arising out of an Event of Loss,
a refinancing of the Equipment Notes or a purchase or early redemption by the
related Owner Participant or Owner Trustee of such Equipment Notes, an early
redemption of Equipment Notes arising out of a voluntary termination of the
related Lease pursuant to Section 9.1 thereof, or exercise by Lessee of a
purchase option, the date of the receipt of the applicable redemption or
purchase price therefor, which shall be a Business Day, and (ii) otherwise, the
earliest Business Day of a month for which it is practicable for the Trustee to
give notice pursuant to Section 4.02(c) of the Basic Agreement 20 days prior
thereto.

6. The Series 1996-A1 Certificates shall be in the form
attached hereto as Exhibit A. The Series 1996-A1 Certificates shall be
Book-Entry Certificates and shall be subject to the conditions set forth in the
Letter of Representations between the Company and the Clearing Agency attached
hereto as Exhibit B.

7. The proceeds of the Series 1996-A1 Certificates shall be
used to purchase the Equipment Notes in the principal amounts specified below:





TRUST SUPPLEMENT NO. 1996-A1
-2-



Equipment Note Principal Amount Maturity
-------------- ---------------- --------

Series 1996 N625SW $19,469,000 January 2, 2014
Series 1996 N626SW $19,890,000 January 2, 2014
Series 1996 N627SW $19,890,000 January 2, 2014
Series 1996 N628SW $15,987,000 January 2, 2014
Series 1996 N635SW $18,950,000 January 2, 2014
Series 1996 N636WN $18,950,000 January 2, 2014


8. Each of six Owner Trustees, each acting on behalf of an Owner
Participant, will issue on a non-recourse basis the Equipment Notes, the
proceeds of which shall be used, among other things, to finance the debt
portion of the purchase price of the following Aircraft:



Registration Manufacturer's
Aircraft Number Serial Number
-------- ------------- -------------

1 Boeing 737-3H4 N625SW 27701
1 Boeing 737-3H4 N626SW 27702
1 Boeing 737-3H4 N627SW 27935
1 Boeing 737-3H4 N628SW 27703
1 Boeing 737-3H4 N635SW 27708
1 Boeing 737-3H4 N636WN 27709


9. The related Note Documents are as follows (with the trust
relating to each Note Document being indicated in parentheses for purposes of
identification):

(a) Each of the following Indentures:

Trust Indenture and Security Agreement (Southwest Airlines
1996 Trust N625SW) dated as of August 1, 1996, as
supplemented;

Trust Indenture and Security Agreement (Southwest Airlines
1996 Trust N626SW) dated as of August 1, 1996, as
supplemented;

Trust Indenture and Security Agreement (Southwest Airlines
1996 Trust N627SW) dated as of August 1, 1996, as
supplemented;

Trust Indenture and Security Agreement (Southwest Airlines
1996 Trust N628SW) dated as of August 1, 1996, as
supplemented;

Trust Indenture and Security Agreement (Southwest Airlines
1996 Trust N635SW) dated as of August 1, 1996, as
supplemented;

Trust Indenture and Security Agreement (Southwest Airlines
1996 Trust N636WN) dated as of August 1, 1996, as
supplemented.





TRUST SUPPLEMENT NO. 1996-A1
-3-
(b) Each of the following Leases:

Sale and Lease Agreement (Southwest Airlines 1996 Trust
N625W), dated as of August 1, 1996, as supplemented;

Sale and Lease Agreement (Southwest Airlines 1996 Trust
N626SW), dated as of August 1, 1996, as supplemented;

Sale and Lease Agreement (Southwest Airlines 1996 Trust
N627SW), dated as of August 1, 1996, as supplemented;

Sale and Lease Agreement (Southwest Airlines 1996 Trust
N628SW), dated as of August 1, 1996, as supplemented;

Sale and Lease Agreement (Southwest Airlines 1996 Trust
N635SW), dated as of August 1, 1996, as supplemented;

Sale and Lease Agreement (Southwest Airlines 1996 Trust
N636WN), dated as of August 1, 1996, as supplemented.

(c) Each of the following Participation Agreements:

Participation Agreement (Southwest Airlines 1996 Trust
N625SW), dated as of August 1, 1996;

Participation Agreement (Southwest Airlines 1996 Trust
N626SW), dated as of August 1, 1996;

Participation Agreement (Southwest Airlines 1996 Trust
N627SW), dated as of August 1, 1996;

Participation Agreement (Southwest Airlines 1996 Trust
N628SW), dated as of August 1, 1996;

Participation Agreement (Southwest Airlines 1996 Trust
N635SW), dated as of August 1, 1996;

Participation Agreement (Southwest Airlines 1996 Trust
N636WN), dated as of August 1, 1996.

(d) Each of the following Trust Agreements:

Trust Agreement (Southwest Airlines 1996 Trust N625SW)
dated as of August 1, 1996, as supplemented;





TRUST SUPPLEMENT NO. 1996-A1
-4-
Trust Agreement (Southwest Airlines 1996 Trust N626SW)
dated as of August 1, 1996, as supplemented;

Trust Agreement (Southwest Airlines 1996 Trust N627SW)
dated as of August 1, 1996, as supplemented;

Trust Agreement (Southwest Airlines 1996 Trust N628SW)
dated as of August 1, 1996, as supplemented;

Trust Agreement (Southwest Airlines 1996 Trust N635SW)
dated as of August 1, 1996, as supplemented;

Trust Agreement (Southwest Airlines 1996 Trust N636WN)
dated as of August 1, 1996, as supplemented.



ARTICLE II
THE TRUSTEE

Section 2.01. The Trustee. The Trustee shall not be responsible in any
manner whatsoever for or in respect of the validity or sufficiency of this
Trust Supplement or the due execution hereof by the Company, or for or in
respect of the recitals and statements contained herein, all of which recitals
and statements are made solely by the Company.

Except as herein otherwise provided, no duties, responsibilities or
liabilities are assumed, or shall be construed to be assumed by the Trustee by
reason of this Trust Supplement other than as set forth in the Basic Agreement,
and this Trust Supplement is executed and accepted on behalf of the Trustee,
subject to all the terms and conditions set forth in the Basic Agreement, upon
the effectiveness thereof, as fully to all intents as if the same were herein
set forth at length.

ARTICLE III
MISCELLANEOUS PROVISIONS

Section 3.01. Basic Agreement Ratified. Except and so far as herein
expressly provided, all of the provisions, terms and conditions of the Basic
Agreement are in all respects ratified and confirmed; and the Basic Agreement
and this Trust Supplement shall be taken, read and construed as one and the
same instrument.

Section 3.02. GOVERNING LAW. THIS TRUST SUPPLEMENT AND THE SERIES
1996-A1 CERTIFICATES SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE
LAWS OF THE STATE OF DELAWARE.





TRUST SUPPLEMENT NO. 1996-A1
-5-
Section 3.03. Execution in Counterparts. This Trust Supplement may be
executed in any number of counterparts, each of which shall be an original, but
such counterparts shall together constitute but one instrument.





TRUST SUPPLEMENT NO. 1996-A1
-6-
IN WITNESS WHEREOF, the Company and the Trustee have caused this Trust
Supplement to be duly executed by their respective officers thereto duly
authorized, as of the day and year first above written.

SOUTHWEST AIRLINES CO.



By
-----------------------------------
Treasurer

WILMINGTON TRUST COMPANY, not in
its individual capacity, but solely
as Trustee



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





TRUST SUPPLEMENT NO. 1996-A1
-7-
EXHIBIT A

CUSIP NO. [FORM OF CERTIFICATE]

**Unless this certificate is presented by an authorized representative
of The Depository Trust Company, a New York Corporation ("DTC"), to Issuer or
its agent for registration of transfer, exchange or payment, and any
certificate issued is registered in the name of Cede & Co. or in such other
name as is requested by an authorized representative of DTC (and any payment is
made to Cede & Co. or to such other entity as is requested by an authorized
representative of DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL inasmuch the registered owner hereof,
Cede & Co., has an interest herein.

SOUTHWEST AIRLINES 1996-A1 PASS THROUGH TRUST

Pass Through
Certificate, Series 1996-A1

Final Distribution Date: January 2, 2014

evidencing a fractional undivided interest in a trust, the
property of which includes certain Equipment Notes each secured
by an Aircraft leased to Southwest Airlines Co.

Certificate
No. ______ $ ________Fractional Undivided Interest representing
_________% of the Trust per $1,000 face amount.

THIS CERTIFIES THAT ___________________________________________, for
value received, is the registered owner of a $__________________________
(_____________ dollars) Fractional Undivided Interest in the Southwest Airlines
1996-A1 Pass Through Trust (the "Trust") created by Wilmington Trust Company,
as trustee (the "Trustee"), pursuant to a Pass Through Trust Agreement dated as
of February 1, 1993 (the "Basic Agreement"), as supplemented by Trust
Supplement No. 1996-A1 thereto dated as of September 1, 1996 (collectively, the
"Agreement"), between the Trustee and Southwest Airlines Co., a corporation
incorporated under Texas law (the "Company"), a summary of certain of the
pertinent provisions of which is set forth below. To the extent not otherwise
defined herein, the capitalized terms used herein have the meanings assigned to
them in the Agreement. This Certificate is one of the duly authorized
Certificates designated as "Pass Through Certificates, Series 1996-A1" (herein
called the "Certificates"). This Certificate is issued under and is subject to
the terms, provisions, and conditions of the Agreement, to which Agreement the
Certificateholder of this Certificate by virtue of the acceptance hereof
assents and by which such Certificateholder is bound. The property of the
Trust includes certain Equipment Notes or, pending the acquisition thereof,
certain cash or Specified Investments (the "Trust Property"). Each issue of
the Equipment Notes, when issued, will be secured by a security interest in an
aircraft leased to the Company.

The Certificates represent Fractional Undivided Interests in the Trust
and the Trust Property, and have no rights, benefits or interest in respect of
any other separate trust established pursuant to the terms of the Basic
Agreement for any other series of certificates issued pursuant thereto.

- ---------------
** This legend to appear on Book-Entry Certificates to be deposited
with The Depository Trust Company. One Certificate may be issued
in a denomination of less than $1,000 which shall not have this
legend.





TRUST SUPPLEMENT NO. 1996-A1
A-1
Subject to and in accordance with the terms of the Agreement, from funds
then available to the Trustee, there will be distributed on January 2 and July
2 in each year, commencing January 2, 1997 (a "Regular Distribution Date") to
the Person in whose name this Certificate is registered at the close of
business on the 15th day preceding the Regular Distribution Date, an amount in
respect of the Scheduled Payments on the Equipment Notes due on such Regular
Distribution Date, the receipt of which has been confirmed by the Trustee,
equal to the product of the percentage interest in the Trust evidenced by this
Certificate and an amount equal to the sum of such Scheduled Payments. Subject
to and in accordance with the terms of the Agreement, in the event that Special
Payments are received by the Trustee, from funds then available to the Trustee,
there shall be distributed on the applicable Special Distribution Date, to the
Person in whose name this Certificate is registered at the close of business on
the 15th day preceding the Special Distribution Date, an amount in respect of
such Special Payments, the receipt of which has been confirmed by the Trustee,
equal to the product of the percentage interest in the Trust evidenced by this
Certificate and an amount equal to the sum of such Special Payments so
received. If a Regular Distribution Date or Special Distribution Date is not a
Business Day, distribution shall be made on the immediately following Business
Day with the same force and effect as if made on such Regular Distribution Date
or Special Distribution Date and no interest shall accrue during the
intervening period. The Trustee shall mail notice of each Special Payment and
the Special Distribution Date therefor to the Certificateholder of this
Certificate.

Distributions on this Certificate will be made by the Trustee in
immediately available funds to the Person entitled thereto, without the
presentation or surrender of this Certificate or the making of any notation
hereon. Except as otherwise provided in the Agreement and notwithstanding the
above, the final distribution on this Certificate will be made after notice
mailed by the Trustee of the pendency of such distribution and only upon
presentation and surrender of this Certificate at the office or agency of the
Trustee specified in such notice.

The Certificates do not represent a direct obligation of, or an
obligation guaranteed by, or an interest in, the Company or the Trustee or any
affiliate thereof. The Certificates are limited in right or payment, all as
more specifically set forth herein and in the Agreement. All payments or
distributions made to Certificateholders under the Agreement shall be made only
from the Trust Property and only to the extent that the Trustee shall have
sufficient income or proceeds from the Trust Property to make such payments in
accordance with the terms of the Agreement. Each Certificateholder of this
Certificate, by its acceptance hereof, agrees that it will look solely to the
income and proceeds from the Trust Property to the extent available for
distribution to such Certificateholder as provided in the Agreement. This
Certificate does not purport to summarize the Agreement and reference is made
to the Agreement for information with respect to the interests, rights,
benefits, obligations, proceeds, and duties, evidenced hereby. A copy of the
Agreement may be examined during normal business hours at the principal office
of the Trustee, and at such other places, if any, designated by the Trustee, by
any Certificateholder upon request.

The Agreement permits, with certain exceptions therein provided, the
amendment thereof and the modification of the rights and obligations of the
Company and the rights of the Certificateholders under the Agreement at any
time by the Company and the Trustee with the consent of the Certificateholders
holding Certificates evidencing Fractional Undivided Interests aggregating not
less





TRUST SUPPLEMENT NO. 1996-A1
A-2
than a majority in interest in the Trust. Any such consent by the
Certificateholder of this Certificate shall be conclusive and binding on such
Certificateholder and upon all future Certificateholders of this Certificate
and of any Certificate issued upon the transfer hereof or in exchange hereof or
in lieu hereof whether or not notation of such consent is made upon this
Certificate. The Agreement also permits the amendment thereof, in certain
limited circumstances, without the consent of the Certificateholders of any of
the Certificates.

As provided in the Agreement and subject to certain limitations therein
set forth, the transfer of this Certificate is registrable in the Register upon
surrender of this Certificate for registration of transfer at the offices or
agencies maintained by the Trustee in its capacity as Registrar, or by any
successor Registrar, duly endorsed or accompanied by a written instrument of
transfer in form satisfactory to the Trustee and the Registrar duly executed by
the Certificateholder hereof or such Certificateholder's attorney duly
authorized in writing, and thereupon one or more new Certificates of authorized
denominations evidencing the same aggregate Fractional Undivided Interest in
the Trust will be issued to the designated transferee or transferees.

The Certificates are issuable only as registered Certificates without
coupons in minimum denominations of $1,000 or integral multiples thereof except
that one Certificate may be in a denomination of less than $1,000. As provided
in the Agreement and subject to certain limitations therein set forth, the
Certificates are exchangeable for new Certificates of authorized denominations
evidencing the same aggregate Fractional Undivided Interest in the Trust, as
requested by the Certificateholder surrendering the same.

No service charge will be made for any such registration of transfer or
exchange, but the Trustee shall require payment of a sum sufficient to cover
any tax or governmental charge payable in connection therewith.

The Trustee, the Registrar, and any agent of the Trustee or the
Registrar may treat the Person in whose name this Certificate is registered as
the owner hereof for all purposes, and none of the Trustee, the Registrar, or
any such agent shall be affected by any notice to the contrary.

The obligations and responsibilities created by the Agreement and the
Trust created thereby shall terminate upon the distribution to
Certificateholders of all amounts required to be distributed to them pursuant
to the Agreement and the disposition of all property held as part of the Trust
Property.

THE AGREEMENT AND THIS CERTIFICATE SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF DELAWARE.

Unless the certificate of authentication hereon has been executed by the
Trustee, by manual signature, this Certificate shall not be entitled to any
benefit under the Agreement or be valid for any purpose.





TRUST SUPPLEMENT NO. 1996-A1
A-3

IN WITNESS WHEREOF, the Trustee has caused this Certificate to be duly
executed.


SOUTHWEST AIRLINES 1996-A1
PASS THROUGH TRUST

By: WILMINGTON TRUST COMPANY, not
in its individual capacity but
solely as Trustee


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

Dated:
--------------------





TRUST SUPPLEMENT NO. 1996-A1
A-4
[FORM OF THE TRUSTEE'S CERTIFICATE OF AUTHENTICATION]


This is one of the Certificates referred
to in the within-mentioned Agreement.



WILMINGTON TRUST COMPANY, not in its
individual capacity, but solely as
Trustee



By:
-----------------------------------
Authorized Officer





TRUST SUPPLEMENT NO. 1996-A1
A-5
EXHIBIT B


TRUST SUPPLEMENT NO. 1996-A1
Dated as of September 1, 1996

[DTC LETTER OF REPRESENTATIONS]





TRUST SUPPLEMENT NO. 1996-A1
B-1
EXHIBIT C


TRUST SUPPLEMENT NO. 1996-A1
Dated as of September 1, 1996


Scheduled Payments



Percentage of Original
Principal Payment Date Principal Amount
- ---------------------- ----------------------

January 2, 1997 0.542359638

January 2, 1998 1.933276764

January 2, 1999 2.094427061

January 2, 2000 8.142778603

January 2, 2001 4.450682365

January 2, 2002 3.330465104

January 2, 2003 3.615826085

January 2, 2004 3.868531679

January 2, 2005 3.679214397

January 2, 2006 4.069960048

January 2, 2007 4.452721503

January 2, 2008 5.947927273

January 2, 2009 8.042414439

January 2, 2010 8.628224438

January 2, 2011 9.152545609

January 2, 2012 10.448704214

January 2, 2013 11.282079975

January 2, 2014 6.317860805
-------------
100.000000000
=============






TRUST SUPPLEMENT NO. 1996-A1
C-1
EXHIBIT 4.56





TRUST SUPPLEMENT NO. 1996-A2
DATED AS OF SEPTEMBER 1, 1996
TO
PASS THROUGH TRUST AGREEMENT
DATED AS OF FEBRUARY 1, 1993


SOUTHWEST AIRLINES CO.
AND
WILMINGTON TRUST COMPANY, AS TRUSTEE

$33,059,000.00

TRUST SUPPLEMENT


This Trust Supplement No. 1996-A2, dated as of September 1, 1996 (the
"Trust Supplement") between Southwest Airlines Co., a Texas corporation (the
"Company") and Wilmington Trust Company, a Delaware banking corporation (the
"Trustee"), to the Pass Through Trust Agreement dated as of February 1, 1993,
between the Company and the Trustee (the "Basic Agreement"),

WITNESSETH:

WHEREAS, the Company and the Trustee have heretofore executed and
delivered the Basic Agreement, unlimited as to the aggregate principal amount
of Certificates (unless specified herein capitalized terms used herein without
definition having the respective meanings specified heretofore in the Basic
Agreement) which may be issued thereunder;

WHEREAS, each of six Owner Trustees, each acting on behalf of an Owner
Participant, has agreed to issue, on a non-recourse basis, Equipment Notes,
among other things, to finance all or a portion of the outstanding debt portion
of the purchase price of the aircraft to be purchased by such Owner Trustee and
leased to the Company pursuant to the related Lease;

WHEREAS, pursuant to the terms and conditions of the Basic Agreement as
supplemented by this Trust Supplement (the "Agreement"), the Trustee shall
purchase such Equipment Notes issued by such Owner Trustees of the same tenor
as the Certificates issued hereunder and shall hold such Equipment Notes in
trust for the benefit of the Certificateholders;

WHEREAS, the Trustee hereby declares the creation of this Trust (the
"1996-A2 Trust") for the benefit of the Certificateholders, and the initial
Certificateholders as the grantors of the 1996-A2 Trust, by their respective
acceptances of the Certificates, join in the creation of this 1996-A2 Trust
with the Trustee;

WHEREAS, all of the conditions and requirements necessary to make this
Trust Supplement, when duly executed and delivered, a valid, binding and legal
instrument in accordance with its terms and for the purposes herein expressed,
have been done, performed and fulfilled, and the execution and delivery of this
Trust Supplement in the form and with the terms hereof have been in all
respects duly authorized;

WHEREAS, this Trust Supplement is subject to the provisions of the Trust
Indenture Act and shall, to the extent applicable, be governed by such
provisions;

NOW, THEREFORE, in consideration of the premises herein, it is agreed
between the Company and the Trustee as follows:





TRUST SUPPLEMENT NO. 1996-A2
-1-


ARTICLE I
THE CERTIFICATES

Section 1.01 The Certificates. Pursuant to Section 2.01 of the Basic
Agreement, there is hereby created a series of Certificates to be issued under
the Agreement to be distinguished and known as "Pass Through Certificates,
Series 1996-A2" (hereinafter defined as the "Series 1996-A2 Certificates").
Each Certificate represents a Fractional Undivided Interest in the 1996-A2
Trust created hereby. The terms and conditions applicable to the Series
1996-A2 Certificates are as follows:

1. The aggregate principal amount of the Series 1996-A2
Certificates that shall be authenticated under the Agreement (except for Series
1996-A2 Certificates authenticated and delivered pursuant to Section 3.03, 3.04
or 3.05 of the Basic Agreement) upon their initial issuance is $33,059,000.

2. The Cut-off Date is September 30, 1996.

3. The Regular Distribution Dates with respect to any payment
of Scheduled Payments are January 2 and July 2 in each year, commencing January
2, 1997, until payment of all of the Scheduled Payments to be made under the
Equipment Notes have been made.

4. The Scheduled Payments shall be as set forth in Exhibit C
hereto.

5. The Special Distribution Dates are as follows: (i) in the
case of an early redemption of Equipment Note arising out of an Event of Loss,
a refinancing of the Equipment Notes or a purchase or early redemption by the
related Owner Participant or Owner Trustee of such Equipment Notes, an early
redemption of Equipment Notes arising out of a voluntary termination of the
related Lease pursuant to Section 9.1 thereof, or exercise by Lessee of a
purchase option, the date of the receipt of the applicable redemption or
purchase price therefor, which shall be a Business Day, and (ii) otherwise, the
earliest Business Day of a month for which it is practicable for the Trustee to
give notice pursuant to Section 4.02(c) of the Basic Agreement 20 days prior
thereto.

6. The Series 1996-A2 Certificates shall be in the form
attached hereto as Exhibit A. The Series 1996-A2 Certificates shall be
Book-Entry Certificates and shall be subject to the conditions set forth in the
Letter of Representations between the Company and the Clearing Agency attached
hereto as Exhibit B.

7. The proceeds of the Series 1996-A2 Certificates shall be
used to purchase the Equipment Notes in the principal amounts specified below:





TRUST SUPPLEMENT NO. 1996-A2
-2-


Equipment Note Principal Amount Maturity
-------------- ---------------- --------

Series 1996 N625SW $ 4,371,000 July 2, 2019
Series 1996 N626SW $ 4,768,500 July 2, 2019
Series 1996 N627SW $ 4,768,500 July 2, 2019
Series 1996 N628SW $ 8,362,000 January 2, 2021
Series 1996 N635SW $ 5,394,500 January 2, 2020
Series 1996 N636WN $ 5,394,500 January 2, 2020


8. Each of six Owner Trustees, each acting on behalf of an Owner
Participant, will issue on a non-recourse basis the Equipment Notes, the
proceeds of which shall be used, among other things, to finance the debt
portion of the purchase price of the following Aircraft:



Registration Manufacturer's
Aircraft Number Serial Number
-------- ------------- -------------

1 Boeing 737-3H4 N625SW 27701
1 Boeing 737-3H4 N626SW 27702
1 Boeing 737-3H4 N627SW 27935
1 Boeing 737-3H4 N628SW 27703
1 Boeing 737-3H4 N635SW 27708
1 Boeing 737-3H4 N636WN 27709


9. The related Note Documents are as follows (with the trust
relating to each Note Document being indicated in parentheses for purposes of
identification):

(a) Each of the following Indentures:

Trust Indenture and Security Agreement (Southwest Airlines
1996 Trust N625SW) dated as of August 1, 1996, as
supplemented;

Trust Indenture and Security Agreement (Southwest Airlines
1996 Trust N626SW) dated as of August 1, 1996, as
supplemented;

Trust Indenture and Security Agreement (Southwest Airlines
1996 Trust N627SW) dated as of August 1, 1996, as
supplemented;

Trust Indenture and Security Agreement (Southwest Airlines
1996 Trust N628SW) dated as of August 1, 1996, as
supplemented;

Trust Indenture and Security Agreement (Southwest Airlines
1996 Trust N635SW) dated as of August 1, 1996, as
supplemented;

Trust Indenture and Security Agreement (Southwest Airlines
1996 Trust N636WN) dated as of August 1, 1996, as
supplemented.





TRUST SUPPLEMENT NO. 1996-A2
-3-
(b) Each of the following Leases:

Sale and Lease Agreement (Southwest Airlines 1996 Trust
N625W), dated as of August 1, 1996, as supplemented;

Sale and Lease Agreement (Southwest Airlines 1996 Trust
N626SW), dated as of August 1, 1996, as supplemented;

Sale and Lease Agreement (Southwest Airlines 1996 Trust
N627SW), dated as of August 1, 1996, as supplemented;

Sale and Lease Agreement (Southwest Airlines 1996 Trust
N628SW), dated as of August 1, 1996, as supplemented;

Sale and Lease Agreement (Southwest Airlines 1996 Trust
N635SW), dated as of August 1, 1996, as supplemented;

Sale and Lease Agreement (Southwest Airlines 1996 Trust
N636WN), dated as of August 1, 1996, as supplemented.

(c) Each of the following Participation Agreements:

Participation Agreement (Southwest Airlines 1996 Trust
N625SW), dated as of August 1, 1996;

Participation Agreement (Southwest Airlines 1996 Trust
N626SW), dated as of August 1, 1996;

Participation Agreement (Southwest Airlines 1996 Trust
N627SW), dated as of August 1, 1996;

Participation Agreement (Southwest Airlines 1996 Trust
N628SW), dated as of August 1, 1996;

Participation Agreement (Southwest Airlines 1996 Trust
N635SW), dated as of August 1, 1996;

Participation Agreement (Southwest Airlines 1996 Trust
N636WN), dated as of August 1, 1996.

(d) Each of the following Trust Agreements:

Trust Agreement (Southwest Airlines 1996 Trust N625SW)
dated as of August 1, 1996, as supplemented;





TRUST SUPPLEMENT NO. 1996-A2
-4-
Trust Agreement (Southwest Airlines 1996 Trust N626SW)
dated as of August 1, 1996, as supplemented;

Trust Agreement (Southwest Airlines 1996 Trust N627SW)
dated as of August 1, 1996, as supplemented;

Trust Agreement (Southwest Airlines 1996 Trust N628SW)
dated as of August 1, 1996, as supplemented;

Trust Agreement (Southwest Airlines 1996 Trust N635SW)
dated as of August 1, 1996, as supplemented;

Trust Agreement (Southwest Airlines 1996 Trust N636WN)
dated as of August 1, 1996, as supplemented.



ARTICLE II
THE TRUSTEE

Section 2.01. The Trustee. The Trustee shall not be responsible in any
manner whatsoever for or in respect of the validity or sufficiency of this
Trust Supplement or the due execution hereof by the Company, or for or in
respect of the recitals and statements contained herein, all of which recitals
and statements are made solely by the Company.

Except as herein otherwise provided, no duties, responsibilities or
liabilities are assumed, or shall be construed to be assumed by the Trustee by
reason of this Trust Supplement other than as set forth in the Basic Agreement,
and this Trust Supplement is executed and accepted on behalf of the Trustee,
subject to all the terms and conditions set forth in the Basic Agreement, upon
the effectiveness thereof, as fully to all intents as if the same were herein
set forth at length.

ARTICLE III
MISCELLANEOUS PROVISIONS

Section 3.01. Basic Agreement Ratified. Except and so far as herein
expressly provided, all of the provisions, terms and conditions of the Basic
Agreement are in all respects ratified and confirmed; and the Basic Agreement
and this Trust Supplement shall be taken, read and construed as one and the
same instrument.

Section 3.02. GOVERNING LAW. THIS TRUST SUPPLEMENT AND THE SERIES
1996-A2 CERTIFICATES SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE
LAWS OF THE STATE OF DELAWARE.





TRUST SUPPLEMENT NO. 1996-A2
-5-
Section 3.03. Execution in Counterparts. This Trust Supplement may be
executed in any number of counterparts, each of which shall be an original, but
such counterparts shall together constitute but one instrument.





TRUST SUPPLEMENT NO. 1996-A2
-6-
IN WITNESS WHEREOF, the Company and the Trustee have caused this Trust
Supplement to be duly executed by their respective officers thereto duly
authorized, as of the day and year first above written.


SOUTHWEST AIRLINES CO.



By
-----------------------------------
Treasurer

WILMINGTON TRUST COMPANY, not in
its individual capacity, but solely
as Trustee



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





TRUST SUPPLEMENT NO. 1996-A2
-7-
EXHIBIT A

CUSIP NO. [FORM OF CERTIFICATE]

**Unless this certificate is presented by an authorized representative
of The Depository Trust Company, a New York Corporation ("DTC"), to Issuer or
its agent for registration of transfer, exchange or payment, and any
certificate issued is registered in the name of Cede & Co. or in such other
name as is requested by an authorized representative of DTC (and any payment is
made to Cede & Co. or to such other entity as is requested by an authorized
representative of DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL inasmuch the registered owner hereof,
Cede & Co., has an interest herein.

SOUTHWEST AIRLINES 1996-A2 PASS THROUGH TRUST

Pass Through
Certificate, Series 1996-A2

Final Distribution Date: January 2, 2021

evidencing a fractional undivided interest in a trust, the
property of which includes certain Equipment Notes each secured
by an Aircraft leased to Southwest Airlines Co.

Certificate
No. ______ $ ________Fractional Undivided Interest representing
_________% of the Trust per $1,000 face amount.

THIS CERTIFIES THAT ___________________________________________, for
value received, is the registered owner of a $__________________________
(_____________ dollars) Fractional Undivided Interest in the Southwest Airlines
1996-A2 Pass Through Trust (the "Trust") created by Wilmington Trust Company,
as trustee (the "Trustee"), pursuant to a Pass Through Trust Agreement dated as
of February 1, 1993 (the "Basic Agreement"), as supplemented by Trust
Supplement No. 1996-A2 thereto dated as of September 1, 1996 (collectively, the
"Agreement"), between the Trustee and Southwest Airlines Co., a corporation
incorporated under Texas law (the "Company"), a summary of certain of the
pertinent provisions of which is set forth below. To the extent not otherwise
defined herein, the capitalized terms used herein have the meanings assigned to
them in the Agreement. This Certificate is one of the duly authorized
Certificates designated as "Pass Through Certificates, Series 1996-A2" (herein
called the "Certificates"). This Certificate is issued under and is subject to
the terms, provisions, and conditions of the Agreement, to which Agreement the
Certificateholder of this Certificate by virtue of the acceptance hereof
assents and by which such Certificateholder is bound. The property of the
Trust includes certain Equipment Notes or, pending the acquisition thereof,
certain cash or Specified Investments (the "Trust Property"). Each issue of
the Equipment Notes, when issued, will be secured by a security interest in an
aircraft leased to the Company.

The Certificates represent Fractional Undivided Interests in the Trust
and the Trust Property, and have no rights, benefits or interest in respect of
any other separate trust established pursuant to the terms of the Basic
Agreement for any other series of certificates issued pursuant thereto.

- ---------------
** This legend to appear on Book-Entry Certificates to be deposited
with The Depository Trust Company. One Certificate may be issued
in a denomination of less than $1,000 which shall not have this
legend.





TRUST SUPPLEMENT NO. 1996-A2
A-1
Subject to and in accordance with the terms of the Agreement, from funds
then available to the Trustee, there will be distributed on January 2 and July
2 in each year, commencing January 2, 1997 (a "Regular Distribution Date") to
the Person in whose name this Certificate is registered at the close of
business on the 15th day preceding the Regular Distribution Date, an amount in
respect of the Scheduled Payments on the Equipment Notes due on such Regular
Distribution Date, the receipt of which has been confirmed by the Trustee,
equal to the product of the percentage interest in the Trust evidenced by this
Certificate and an amount equal to the sum of such Scheduled Payments. Subject
to and in accordance with the terms of the Agreement, in the event that Special
Payments are received by the Trustee, from funds then available to the Trustee,
there shall be distributed on the applicable Special Distribution Date, to the
Person in whose name this Certificate is registered at the close of business on
the 15th day preceding the Special Distribution Date, an amount in respect of
such Special Payments, the receipt of which has been confirmed by the Trustee,
equal to the product of the percentage interest in the Trust evidenced by this
Certificate and an amount equal to the sum of such Special Payments so
received. If a Regular Distribution Date or Special Distribution Date is not a
Business Day, distribution shall be made on the immediately following Business
Day with the same force and effect as if made on such Regular Distribution Date
or Special Distribution Date and no interest shall accrue during the
intervening period. The Trustee shall mail notice of each Special Payment and
the Special Distribution Date therefor to the Certificateholder of this
Certificate.

Distributions on this Certificate will be made by the Trustee in
immediately available funds to the Person entitled thereto, without the
presentation or surrender of this Certificate or the making of any notation
hereon. Except as otherwise provided in the Agreement and notwithstanding the
above, the final distribution on this Certificate will be made after notice
mailed by the Trustee of the pendency of such distribution and only upon
presentation and surrender of this Certificate at the office or agency of the
Trustee specified in such notice.

The Certificates do not represent a direct obligation of, or an
obligation guaranteed by, or an interest in, the Company or the Trustee or any
affiliate thereof. The Certificates are limited in right or payment, all as
more specifically set forth herein and in the Agreement. All payments or
distributions made to Certificateholders under the Agreement shall be made only
from the Trust Property and only to the extent that the Trustee shall have
sufficient income or proceeds from the Trust Property to make such payments in
accordance with the terms of the Agreement. Each Certificateholder of this
Certificate, by its acceptance hereof, agrees that it will look solely to the
income and proceeds from the Trust Property to the extent available for
distribution to such Certificateholder as provided in the Agreement. This
Certificate does not purport to summarize the Agreement and reference is made
to the Agreement for information with respect to the interests, rights,
benefits, obligations, proceeds, and duties, evidenced hereby. A copy of the
Agreement may be examined during normal business hours at the principal office
of the Trustee, and at such other places, if any, designated by the Trustee, by
any Certificateholder upon request.

The Agreement permits, with certain exceptions therein provided, the
amendment thereof and the modification of the rights and obligations of the
Company and the rights of the Certificateholders under the Agreement at any
time by the Company and the Trustee with the consent of the Certificateholders
holding Certificates evidencing Fractional Undivided Interests aggregating not
less





TRUST SUPPLEMENT NO. 1996-A2
A-2
than a majority in interest in the Trust. Any such consent by the
Certificateholder of this Certificate shall be conclusive and binding on such
Certificateholder and upon all future Certificateholders of this Certificate
and of any Certificate issued upon the transfer hereof or in exchange hereof or
in lieu hereof whether or not notation of such consent is made upon this
Certificate. The Agreement also permits the amendment thereof, in certain
limited circumstances, without the consent of the Certificateholders of any of
the Certificates.

As provided in the Agreement and subject to certain limitations therein
set forth, the transfer of this Certificate is registrable in the Register upon
surrender of this Certificate for registration of transfer at the offices or
agencies maintained by the Trustee in its capacity as Registrar, or by any
successor Registrar, duly endorsed or accompanied by a written instrument of
transfer in form satisfactory to the Trustee and the Registrar duly executed by
the Certificateholder hereof or such Certificateholder's attorney duly
authorized in writing, and thereupon one or more new Certificates of authorized
denominations evidencing the same aggregate Fractional Undivided Interest in
the Trust will be issued to the designated transferee or transferees.

The Certificates are issuable only as registered Certificates without
coupons in minimum denominations of $1,000 or integral multiples thereof except
that one Certificate may be in a denomination of less than $1,000. As provided
in the Agreement and subject to certain limitations therein set forth, the
Certificates are exchangeable for new Certificates of authorized denominations
evidencing the same aggregate Fractional Undivided Interest in the Trust, as
requested by the Certificateholder surrendering the same.

No service charge will be made for any such registration of transfer or
exchange, but the Trustee shall require payment of a sum sufficient to cover
any tax or governmental charge payable in connection therewith.

The Trustee, the Registrar, and any agent of the Trustee or the
Registrar may treat the Person in whose name this Certificate is registered as
the owner hereof for all purposes, and none of the Trustee, the Registrar, or
any such agent shall be affected by any notice to the contrary.

The obligations and responsibilities created by the Agreement and the
Trust created thereby shall terminate upon the distribution to
Certificateholders of all amounts required to be distributed to them pursuant
to the Agreement and the disposition of all property held as part of the Trust
Property.

THE AGREEMENT AND THIS CERTIFICATE SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF DELAWARE.

Unless the certificate of authentication hereon has been executed by the
Trustee, by manual signature, this Certificate shall not be entitled to any
benefit under the Agreement or be valid for any purpose.





TRUST SUPPLEMENT NO. 1996-A2
A-3

IN WITNESS WHEREOF, the Trustee has caused this Certificate to be duly
executed.


SOUTHWEST AIRLINES 1996-A2
PASS THROUGH TRUST

By: WILMINGTON TRUST COMPANY, not
in its individual capacity but
solely as Trustee


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

Dated:
--------------------





TRUST SUPPLEMENT NO. 1996-A2
A-4
[FORM OF THE TRUSTEE'S CERTIFICATE OF AUTHENTICATION]


This is one of the Certificates referred
to in the within-mentioned Agreement.



WILMINGTON TRUST COMPANY, not in its
individual capacity, but solely as
Trustee



By:
-----------------------------------
Authorized Officer





TRUST SUPPLEMENT NO. 1996-A2
A-5
EXHIBIT B


TRUST SUPPLEMENT NO. 1996-A2
Dated as of September 1, 1996

[DTC LETTER OF REPRESENTATIONS]





TRUST SUPPLEMENT NO. 1996-A2
B-1
EXHIBIT C


TRUST SUPPLEMENT NO. 1996-A2
Dated as of September 1, 1996


Scheduled Payments



Percentage of Original
Principal Payment Date Principal Amount
- ---------------------- ----------------------

January 2, 2014 3.918457909

January 2, 2016 6.343310445

January 2, 2017 9.578617018

July 2, 2017 0.256250945

January 2, 2018 33.406080039

July 2, 2018 1.129435252

January 2, 2019 30.952312532

July 2, 2019 11.124174960

January 2, 2020 3.271544814

January 2, 2021 0.019816086
-------------
100.000000000
=============






TRUST SUPPLEMENT NO. 1996-A2
C-1