Trust Supplement No. 2009-2B-O



 Exhibit 4.3 
 TRUST SUPPLEMENT NO. 2009-2B-O 
 dated as of
November 24, 2009 
 between 
 WILMINGTON TRUST COMPANY  
 as Trustee, 
 and 
 UNITED AIR
LINES, INC. 
 to 
 PASS THROUGH TRUST AGREEMENT  
 dated as of June 26, 2007 
 $112,606,000 
 United Air Lines Pass Through Trust 2009-2B-O 
 United Air Lines 
 Pass Through Certificates, 
 Series 2009-2B-O 
 Vedder Price P.C. 
 Chicago, Illinois 







 TABLE OF CONTENTS 
  

					
	 	 	 	  	Page
	 ARTICLE I
	 	THE CERTIFICATES	  	2
	 Section 1.01.
	 	 The Certificates
	  	2
			
	 ARTICLE II
	 	DEFINITIONS	  	3
	 Section 2.01.
	 	 Definitions
	  	3
			
	 ARTICLE III
	 	DISTRIBUTIONS; STATEMENTS TO CERTIFICATEHOLDERS; TRANSFERS	  	9
	 Section 3.01.
	 	 Statements to Applicable Certificateholders
	  	9
	 Section 3.02.
	 	 Special Payments Account
	  	10
	 Section 3.03.
	 	 Transfer of Escrow Receipt
	  	10
			
	 ARTICLE IV
	 	DEFAULT	  	11
	 Section 4.01.
	 	 Purchase Rights of Certificateholders
	  	11
			
	 ARTICLE V
	 	THE TRUSTEE	  	13
	 Section 5.01.
	 	 Delivery of Documents; Delivery Dates
	  	13
	 Section 5.02.
	 	 Withdrawal of Deposits
	  	14
	 Section 5.03.
	 	 The Trustee
	  	14
	 Section 5.04.
	 	 Representations and Warranties of the Trustee
	  	15
	 Section 5.05.
	 	 Trustee Liens
	  	15
			
	 ARTICLE VI
	 	ADDITIONAL AMENDMENT; SUPPLEMENTAL AGREEMENTS	  	16
	 Section 6.01.
	 	 Amendment of Section 5.02 of the Basic Agreement
	  	16
	 Section 6.02.
	 	 Supplemental Agreements Without Consent of Applicable Certificateholders
	  	16
	 Section 6.03.
	 	 Supplemental Agreements with Consent of Applicable Certificateholders
	  	16
	 Section 6.04.
	 	 Consent of Holders of Certificates Issued under Other Trusts
	  	17
			
	 ARTICLE VII
	 	TERMINATION OF TRUST	  	17
	 Section 7.01.
	 	 Termination of the Applicable Trust
	  	17
			
	 ARTICLE VIII
	 	TRANSFER OF THE APPLICABLE CERTIFICATES	  	19
	 Section 8.01.
	 	 Restrictive Legends
	  	19
	 Section 8.02.
	 	 Amendment of Section 3.04 of the Basic Agreement
	  	20
	 Section 8.03.
	 	 Transfer and Exchange
	  	20
	 Section 8.04.
	 	 Special Transfer Provisions
	  	21
			
	 ARTICLE IX
	 	MISCELLANEOUS PROVISIONS	  	22
	 Section 9.01.
	 	 Basic Agreement Ratified
	  	22
	 Section 9.02.
	 	 GOVERNING LAW
	  	22
	 Section 9.03.
	 	 Execution in Counterparts
	  	22
	 Section 9.04.
	 	 Intention of Parties
	  	22

  

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	Exhibit A	 	-	    	Form of Certificate
	Exhibit B	 	-	    	DTC Letter of Representations
	Exhibit C	 	-	    	Form of Assignment and Assumption Agreement

  

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 THIS TRUST SUPPLEMENT NO. 2009-2B-O, dated as of November 24, 2009 (herein
called the “Trust Supplement”), between United Air Lines, Inc., a Delaware corporation (the “Company”), and Wilmington Trust Company (the “Trustee”), to the Pass Through Trust Agreement, dated as of
June 26, 2007, between the Company and the Trustee (the “Basic Agreement”). 
 W I T
N E S S E T H: 
 WHEREAS, the Basic Agreement, unlimited as to the
aggregate principal amount of Certificates (unless otherwise specified herein, capitalized terms used herein without definition having the respective meanings specified in the Basic Agreement) which may be issued thereunder, has heretofore been
executed and delivered; 
 WHEREAS, the Company intends to finance certain Aircraft through separate secured loan
transactions, under which the Company will own such Aircraft (collectively, the “Aircraft”); 
 WHEREAS,
in the case of each Aircraft, the Company will issue pursuant to an Indenture, on a recourse basis, Equipment Notes secured by such Aircraft; 
 WHEREAS, the Trustee hereby declares the creation of the United Air Lines Pass Through Trust 2009-2B-O (the “Applicable Trust”) for the benefit of the Applicable
Certificateholders, and the initial Applicable Certificateholders as the grantors of the Applicable Trust, by their respective acceptances of the Applicable Certificates, join in the creation of the Applicable Trust with the Trustee; 
 WHEREAS, all Certificates to be issued by the Applicable Trust will evidence fractional undivided interests in the Applicable Trust
and will convey no rights, benefits or interests in respect of any property other than the Trust Property except for those Certificates to which an Escrow Receipt has been affixed; 
 WHEREAS, the Escrow Agent and the Underwriters have contemporaneously herewith entered into an Escrow Agreement with the Escrow
Paying Agent and the Trustee pursuant to which the Underwriters have delivered to the Escrow Agent the proceeds from the sale of the Applicable Certificates, and have irrevocably instructed the Escrow Agent to withdraw and pay funds from such
proceeds upon request and proper certification by the Trustee to purchase Equipment Notes as the conditions set forth in the Note Purchase Agreement and the relevant Participation Agreement for such purchase are satisfied from time to time prior to
the Deposit Period Termination Date; 
 WHEREAS, the Escrow Agent on behalf of the Applicable Certificateholders has
contemporaneously herewith entered into a Deposit Agreement with the Depositary under which the Deposits referred to therein will be made and from which it will withdraw funds to allow the Trustee to purchase Equipment Notes from time to time prior
to the Deposit Period Termination Date; 








 [Trust Supplement No. 2009-2B-O] 
  

 WHEREAS, pursuant to the terms and conditions of the Basic Agreement as
supplemented by this Trust Supplement (the “Agreement”), the Note Purchase Agreement and the applicable Participation Agreement, the Trustee on behalf of the Applicable Trust, using funds withdrawn under the Escrow Agreement, shall
purchase one or more Equipment Notes having the same interest rate as, and final maturity date not later than the final Regular Distribution Date of, the Applicable Certificates issued hereunder and shall hold such Equipment Notes in trust for the
benefit of the Applicable Certificateholders; 
 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 of 1939, as amended, 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: 
 ARTICLE I 
 THE CERTIFICATES 
 Section 1.01. The Certificates. There is hereby created a series of Certificates to be issued under the Agreement to be
distinguished and known as “United Air Lines Pass Through Certificates, Series 2009-2B-O” (hereinafter defined as the “Applicable Certificates”). Each Applicable Certificate represents a fractional undivided interest in
the Applicable Trust created hereby. The Applicable Certificates shall be the only instruments evidencing a fractional undivided interest in the Applicable Trust. 
 The terms and conditions applicable to the Applicable Certificates are as follows: 
 (a) The aggregate principal amount of the Applicable Certificates that shall be authenticated under the Agreement (except for Applicable Certificates authenticated and delivered under Sections 3.03, 3.04, 3.05 and 3.06 of the Basic
Agreement) is $112,606,000. 
 (b) The Regular Distribution Dates with respect to any payment of Scheduled Payments means
January 15 and July 15 of each year, commencing on July 15, 2010, until payment of all of the Scheduled Payments to be made under the Equipment Notes has been made. 
 (c) The Special Distribution Dates with respect to the Applicable Certificates means any Business Day on which a Special Payment is to be
distributed pursuant to the Agreement. 
 (d) At the Escrow Agent’s request under the Escrow Agreement, the Trustee shall
affix the corresponding Escrow Receipt to each Applicable Certificate. In any event, any transfer or exchange of any Applicable Certificate shall also effect a transfer or exchange of the related Escrow Receipt. Prior to the Final Withdrawal Date,
no transfer or exchange of any Applicable Certificate

  

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shall be permitted unless the corresponding Escrow Receipt is attached thereto and also is so transferred or exchanged. By acceptance of any Applicable Certificate to which an Escrow Receipt is
attached, each Holder of such an Applicable Certificate acknowledges and accepts the restrictions on transfer of the Escrow Receipt set forth herein and in the Escrow Agreement. 
 (e) (i) The Applicable Certificates shall be in the form attached hereto as Exhibit A. Any Person acquiring or accepting an Applicable
Certificate or an interest therein will, by such acquisition or acceptance, be deemed to represent and warrant to and for the benefit of the Company that either (i) the assets of an employee benefit plan subject to Title I of the Employee
Retirement Income Security Act of 1974, as amended (“ERISA”), or of a plan subject to Section 4975 of the Internal Revenue Code of 1986, as amended (the “Code”), have not been used to purchase or hold
Applicable Certificates or an interest therein or (ii) the purchase and holding of Applicable Certificates or an interest therein is exempt from the prohibited transaction restrictions of ERISA and the Code pursuant to one or more prohibited
transaction statutory or administrative exemptions. In addition, the Applicable Certificates will bear a legend regarding ERISA compliance matters. 
 (ii) The Applicable 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. 
 (f) The “Participation Agreements” as defined in this Trust Supplement are the “Note
Purchase Agreements” referred to in the Basic Agreement. 
 (g) The Applicable Certificates are subject to the
Intercreditor Agreement, the Deposit Agreement and the Escrow Agreement. 
 (h) The Applicable Certificates are entitled to the
benefits of the Liquidity Facility. 
 (i) The Equipment Notes to be acquired and held in the Applicable Trust, and the related
Aircraft and Note Documents, are described in the Note Purchase Agreement. 
 ARTICLE II 
 DEFINITIONS 
 Section 2.01. Definitions. For all purposes of the Basic Agreement as supplemented by this Trust Supplement, the following capitalized terms have the following meanings (any capitalized term used herein but not defined
shall have the meaning assigned to it in the Basic Agreement, and any term used herein which is defined in both this Trust Supplement and the Basic Agreement shall have the meaning assigned thereto in this Trust Supplement for purposes of the Basic
Agreement as supplemented by this Trust Supplement): 
 Agreement: Has the meaning specified in the recitals
hereto. 
  

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 [Trust Supplement No. 2009-2B-O] 
  

 Aircraft: Means each of the Aircraft in respect of which a Participation
Agreement is entered into in accordance with the Note Purchase Agreement (or any substitute aircraft, including engines therefor, owned by the Company and securing one or more Equipment Notes). 
 Applicable Certificate: Has the meaning specified in Section 1.01 of this Trust Supplement. 
 Applicable Certificateholder: Means the Person in whose name an Applicable Certificate is registered on the Register for the
Applicable Certificates. 
 Applicable Closing Date: Has the meaning specified in Section 5.01(b) of this
Trust Supplement. 
 Applicable Participation Agreement: Has the meaning specified in Section 5.01(b) of this
Trust Supplement. 
 Applicable Trust: Has the meaning specified in the recitals hereto. 
 Assignment and Assumption Agreement: Means the assignment and assumption agreement substantially in the form of Exhibit C
hereto executed and delivered in accordance with Section 7.01 of this Trust Supplement. 
 Basic Agreement:
Has the meaning specified in the first paragraph of this Trust Supplement. 
 Business Day: Means any day other
than a Saturday, a Sunday or a day on which commercial banks are required or authorized to close in Chicago, Illinois, New York, New York, or, so long as any Applicable Certificate is outstanding, the city and state in which the Trustee, the
Subordination Agent or any related Loan Trustee maintains its corporate trust office or receives and disburses funds. 
 Certificate: Has the meaning specified in the Intercreditor Agreement. 
 Certificate Buyout
Event: Means that a United Bankruptcy Event has occurred and is continuing and the following events in either clause (A) or (B) have occurred: (A) (i) the 60-day period specified in Section 1110(a)(2)(A) of the U.S.
Bankruptcy Code (the “60-Day Period”) has expired and (ii) the Company has not entered into one or more agreements under Section 1110(a)(2)(A) of the U.S. Bankruptcy Code to perform all of its obligations under all of the
Indentures or, if it has entered into such agreements, has at any time thereafter failed to cure any default under any of the Indentures in accordance with Section 1110(a)(2)(B) of the Bankruptcy Code; or (B) if prior to the expiry of the
60-Day Period, the Company shall have abandoned any Aircraft. 
 Class: Has the meaning specified in the
Intercreditor Agreement. 
 Closing Notice: Has the meaning specified in the Note Purchase Agreement. 

Company: Has the meaning specified in the first paragraph of this Trust Supplement. 
  

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 [Trust Supplement No. 2009-2B-O] 
  

 Controlling Party: Has the meaning specified in the Intercreditor
Agreement. 
 Cut-off Date: Means the earlier of (a) the Deposit Period Termination Date and (b) the
date on which a Triggering Event occurs. 
 Deposit Agreement: Means the Deposit Agreement dated as of
November 24, 2009 relating to the Applicable Certificates between the Depositary and the Escrow Agent, as the same may be amended, supplemented or otherwise modified from time to time in accordance with its terms. 
 Deposit Period Termination Date: Means the earlier of (a) the date that is 90 days after the Issuance Date, and
(b) the date on which Equipment Notes issued with respect to all of the Aircraft have been purchased by the Applicable Trust in accordance with the Note Purchase Agreement and the related Participation Agreement. 
 Depositary: Means JPMorgan Chase Bank, N.A., a national banking association organized and existing under the laws of the
United States. 
 Deposits: Has the meaning specified in the Deposit Agreement. 
 Distribution Date: Means any Regular Distribution Date or Special Distribution Date as the context requires. 
 Escrow Agent: Means, initially, Wilmington Trust Company, and any replacement or successor therefor appointed in accordance
with the Escrow Agreement. 
 Escrow Agreement: Means the Escrow and Paying Agent Agreement dated as of
November 24, 2009 relating to the Applicable Certificates, among the Escrow Agent, the Escrow Paying Agent, the Trustee and Underwriters, as the same may be amended, supplemented or otherwise modified from time to time in accordance with its
terms. 
 Escrow Paying Agent: Means the Person acting as paying agent under the Escrow Agreement. 
 Escrow Receipt: Means the receipt substantially in the form annexed to the Escrow Agreement representing a fractional
undivided interest in the funds held in escrow thereunder. 
 Final Maturity Date: Means January 15, 2016.

 Final Withdrawal: Has the meaning specified in the Escrow Agreement. 
 Final Withdrawal Date: Has the meaning specified in the Escrow Agreement. 
 Final Withdrawal Notice: Has the meaning specified in Section 5.02 of this Trust Supplement. 
 Indenture: Means each of the separate trust indentures and mortgages relating to the Aircraft, each as specified or described
in a Closing Notice delivered pursuant to the Note Purchase Agreement or the related Participation Agreement, in each case as the same may be amended, supplemented or otherwise modified from time to time in accordance with its terms. 
  

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 [Trust Supplement No. 2009-2B-O] 
  

 Intercreditor Agreement: Means the Intercreditor Agreement dated as of
November 24, 2009 among the Trustee, the Other Trustees, the Liquidity Provider, the liquidity provider relating to the Class A Certificates and Wilmington Trust Company, as Subordination Agent and as trustee thereunder, as amended,
supplemented or otherwise modified from time to time in accordance with its terms. 
 Investors: Means the
Underwriters, together with all subsequent beneficial owners of the Applicable Certificates. 
 Liquidity
Facility: Means, initially, the Revolving Credit Agreement dated as of November 24, 2009 relating to the Applicable Certificates, between the Liquidity Provider and Wilmington Trust Company, as Subordination Agent, as agent and trustee
for the Applicable Trust, and, from and after the replacement of such agreement pursuant to the Intercreditor Agreement, the replacement liquidity facility therefor, in each case as amended, supplemented or otherwise modified from time to time in
accordance with their respective terms. 
 Liquidity Provider: Means, initially, Goldman Sachs Bank USA, a
corporation organized under the banking laws of the State of New York and any replacements or successors therefor appointed in accordance with the Intercreditor Agreement. 
 Note Documents: Means the Equipment Notes with respect to the Applicable Certificates and, with respect to any such Equipment
Note, the Indenture, the Parent Guarantee and the Participation Agreement relating to such Equipment Note. 
 Note
Purchase Agreement: Means the Note Purchase Agreement dated as of November 24, 2009 among the Trustee, the Other Trustees, the Company, the Escrow Agent, the Escrow Paying Agent and the Subordination Agent, providing for, among other
things, the purchase of Equipment Notes by the Trustee on behalf of the Applicable Trust, as the same may be amended, supplemented or otherwise modified from time to time, in accordance with its terms. 
 Notice of Financing Withdrawal: Has the meaning specified in the Deposit Agreement. 
 Other Agreement: Means (i) the Basic Agreement as supplemented by Trust Supplement No. 2009-2A-O dated as of the
date hereof relating to the United Air Lines Pass Through Trust 2009-2A-O, (ii) the Basic Agreement as supplemented by a trust supplement relating to the Additional Trust, if any and (iii) the Basic Agreement as supplemented by a Trust
Supplement relating to any Refinancing Trust, if any. 
 Other Trustees: Means the trustees under the Other
Agreements, and any successor or other trustee appointed as provide therein. 
 Other Trusts: Means the United Air
Lines Pass Through Trust 2009-2A-O, an Additional Trust, if any, and a Refinancing Trust or Trusts, if any, created by the Other Agreements. 
  

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 [Trust Supplement No. 2009-2B-O] 
  

 Participation Agreement: Means each Participation Agreement to be entered
into, or entered into (as the case may be), by the Trustee pursuant to the Note Purchase Agreement, as the same may be amended, supplemented or otherwise modified in accordance with its terms. 
 Pool Balance: Means, with respect to the Applicable Trust or the Applicable Certificates issued by the Applicable Trust, as of
any date, (i) the original aggregate face amount of the Applicable Certificates less (ii) the aggregate amount of all payments made as of such date in respect of such Applicable Certificates or in respect of Deposits other than
payments made in respect of interest or premium thereon or reimbursement of any costs and expenses incurred in connection therewith. The Pool Balance as of any date shall be computed after giving effect to any special distribution with respect to
unused Deposits, the payment of principal, if any, on the Equipment Notes or payment with respect to other Trust Property and the distribution thereof to be made on that date. 
 Prospectus Supplement: Means the final Prospectus Supplement dated November 16, 2009 relating to the offering of the
Applicable Certificates and Class A Certificates. 
 QIB: Means a qualified institutional buyer as defined in
Rule 144A. 
 Ratings Confirmation: Has the meaning specified in the Intercreditor Agreement. 
 Register: Has the meaning specified in Section 8.03 of this Trust Supplement. 
 Registrar: Has the meaning specified in Section 8.03 of this Trust Supplement. 
 Related Pass Through Trust Agreement: Means the Pass Through Trust Agreement relating to the United Air Lines Pass Through
Trust, Series 2009-2B-S, dated as of the date hereof, between the Company and the institution acting as trustee thereunder, which agreement becomes effective upon the execution and delivery of the Assignment and Assumption Agreement pursuant to
Section 7.01 of this Trust Supplement. 
 Related Trust: Means United Air Lines Pass Through Trust, Series
2009-2B-S, formed under the Related Pass Through Trust Agreement. 
 Related Trustee: Means the trustee under the
Related Pass Through Trust Agreement. 
 Restrictive Legend: Has the meaning specified in Section 8.01 of the
Trust Supplement. 
 Rule 144A: Means Rule 144A under the Securities Act of 1933, as amended, and any successor
rule thereto. 
 Scheduled Payment: Means, with respect to any Equipment Note, (i) any payment of principal
or interest on such Equipment Note (other than any such payment which is not in fact received by the Trustee or any Subordination Agent within ten (10) Business Days of the date on which such payment is scheduled to be made) or (ii) any
payment of interest on the Applicable Certificates with funds drawn under the Liquidity Facility, which payment in any such case represents the installment of principal on such Equipment Note at the stated maturity of such installment, the payment
of regularly scheduled interest accrued on the unpaid principal amount of such Equipment Note, or both; provided, however, that any payment of principal, premium, if any, or interest resulting from the redemption or purchase of any
Equipment Note shall not constitute a Scheduled Payment. 
  

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 [Trust Supplement No. 2009-2B-O] 
  

 Special Payment: Means any payment (other than a Scheduled Payment) in
respect of, or any proceeds of, any Equipment Note or Collateral (as defined in each Indenture). 
 Transfer Date:
Has the meaning specified in Section 7.01 of this Trust Supplement. 
 Triggering Event: Has the meaning
assigned to such term in the Intercreditor Agreement. 
 Trust Property: Means (i) subject to the
Intercreditor Agreement, the Equipment Notes held as the property of the Applicable Trust, the Parent Guarantee with respect to such Equipment Notes, all monies at any time paid thereon and all monies due and to become due thereunder,
(ii) funds from time to time deposited in the Certificate Account and the Special Payments Account and, subject to the Intercreditor Agreement, any proceeds from the sale by the Trustee pursuant to Article VI of the Basic Agreement of any
Equipment Note and (iii) all rights of the Applicable Trust and the Trustee, on behalf of the Applicable Trust, under the Intercreditor Agreement, the Escrow Agreement, the Note Purchase Agreement and the Liquidity Facility, including, without
limitation, all rights to receive certain payments thereunder, and all monies paid to the Trustee on behalf of the Applicable Trust pursuant to the Intercreditor Agreement or the Liquidity Facility, provided that rights with respect to the
Deposits or under the Escrow Agreement, except for the right to direct withdrawals for the purchase of Equipment Notes to be held hereunder, will not constitute Trust Property. 
 Trust Supplement: Has the meaning specified in the first paragraph of this trust supplement. 
 Trustee: Has the meaning specified in the first paragraph of this Trust Supplement. 
 Underwriters: Means, collectively, J.P. Morgan Securities Inc., Morgan Stanley & Co. Incorporated, Goldman,
Sachs & Co., Citigroup Global Markets Inc., Credit Suisse Securities (USA) LLC and Deutsche Bank Securities Inc. 
 Underwriting Agreement: Means the Underwriting Agreement dated November 16, 2009 among the Underwriters, the Company and the Depositary as the same may be amended, supplemented or otherwise modified from time to time in
accordance with its terms. 
 United Bankruptcy Event: Has the meaning specified in the Intercreditor Agreement.

  

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 [Trust Supplement No. 2009-2B-O] 
  

 ARTICLE III 
 DISTRIBUTIONS; STATEMENTS TO 
 CERTIFICATEHOLDERS;
TRANSFERS 
 Section 3.01. Statements to Applicable Certificateholders. (a) On each Distribution
Date, the Trustee will include with each distribution to Applicable Certificateholders of a Scheduled Payment or Special Payment, as the case may be, a statement setting forth the information provided below (in the case of a Special Payment,
reflecting in part the information provided by the Escrow Paying Agent under the Escrow Agreement). Such statement shall set forth (per $1,000 face amount Applicable Certificate as to (ii), (iii), (iv) and (v) below) the following
information: 
 (i) the aggregate amount of funds distributed on such Distribution Date under the Agreement and
under the Escrow Agreement, indicating the amount allocable to each source including any portion thereof paid by the Liquidity Provider; 
 (ii) the amount of such distribution under the Agreement allocable to principal and the amount allocable to premium, if any; 
 (iii) the amount of such distribution under the Agreement allocable to interest; 
 (iv) the amount of such distribution under the Escrow Agreement allocable to interest; 
 (v) the amount of such distribution under the Escrow Agreement allocable to unused Deposits, if any; and 
 (vi) the Pool Balance and the Pool Factor. 
 With respect to the Applicable Certificates registered in the name of a Clearing Agency or its nominee, on the Record Date prior to each Distribution Date, the Trustee will request that such Clearing
Agency post on its Internet bulletin board a securities position listing setting forth the names of all Clearing Agency Participants reflected on such Clearing Agency’s books as holding interests in the Applicable Certificates on such Record
Date. On each Distribution Date, the Trustee will mail to each such Clearing Agency Participant the statement described above and will make available additional copies as requested by such Clearing Agency Participant for forwarding to holders of
interests in the Applicable Certificates. 
 (b) Within a reasonable period of time after the end of each calendar year but not
later than the latest date permitted by law, the Trustee shall furnish to each Person who at any time during such calendar year was an Applicable Certificateholder of record a statement containing the sum of the amounts determined pursuant to
clauses (a)(i), (a)(ii), (a)(iii), (a)(iv) and (a)(v) above for such calendar year or, in the event such Person was an Applicable Certificateholder of record during a portion of such calendar year, for such portion of such year, and such other items
as are readily available to the Trustee and which an Applicable Certificateholder shall reasonably request as necessary for the purpose of such Applicable Certificateholder’s preparation of its U.S. federal income tax returns. Such statement
and such other items shall be prepared on the basis of information supplied to the Trustee by the Clearing Agency Participants and shall be delivered by the Trustee to such Clearing Agency Participants to be available for forwarding by such Clearing
Agency Participants to the holders of interests in the Applicable Certificates in the manner described in Section 3.01(a) of this Trust Supplement. 
  

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 (c) Promptly following (i) the Deposit Period Termination Date, if there has been
any change in the information set forth in clauses (x), (y) and (z) below from that set forth in pages S-96 and S-97 of the Prospectus Supplement, and (ii) any early redemption of, or any default in the payment of principal or
interest in respect of, any of the Equipment Notes held in the Applicable Trust, or any Final Withdrawal, the Trustee shall furnish to Applicable Certificateholders of record on such date a statement setting forth (x) the expected Pool Balances
for each subsequent Regular Distribution Date following the Deposit Period Termination Date, (y) the related Pool Factors for such Regular Distribution Dates and (z) the expected principal distribution schedule of the Equipment Notes, in
the aggregate, held as Trust Property at the date of such notice. With respect to the Applicable Certificates registered in the name of a Clearing Agency, on the Deposit Period Termination Date, the Trustee will request from such Clearing Agency a
securities position listing setting forth the names of all Clearing Agency Participants reflected on such Clearing Agency’s books as holding interests in the Applicable Certificates on such date. The Trustee will mail to each such Clearing
Agency Participant the statement described above and will make available additional copies as requested by such Clearing Agency Participant for forwarding to holders of interests in the Applicable Certificates. 
 (d) The Trustee shall provide promptly to the Applicable Certificateholders all material non-confidential information received by the
Trustee from the Company. 
 (e) This Section 3.01 supersedes and replaces Section 4.03 of the Basic Agreement, with
respect to the Applicable Trust. 
 Section 3.02. Special Payments Account. (a) The Trustee shall
establish and maintain on behalf of the Applicable Certificateholders a Special Payments Account as one or more accounts, which shall be non-interest bearing except as provided in Section 4.04 of the Basic Agreement. The Trustee shall hold the
Special Payments Account in trust for the benefit of the Applicable Certificateholders and shall make or permit withdrawals therefrom only as provided in the Agreement. On each day when one or more Special Payments are made to the Trustee under the
Intercreditor Agreement, the Trustee, upon receipt thereof, shall immediately deposit the aggregate amount of such Special Payments in the Special Payments Account. 
 (b) This Section 3.02 supersedes and replaces Section 4.01(b) of the Basic Agreement in its entirety, with respect to the Applicable Trust. 
 Section 3.03. Transfer of Escrow Receipt. At the Escrow Agent’s request under the Escrow Agreement, the Trustee
shall affix the corresponding Escrow Receipt to each Applicable Certificate. In any event, any transfer or exchange of any Applicable Certificate shall also effect a transfer or exchange of the related Escrow Receipt. Prior to the Final Withdrawal
Date, no transfer or exchange of any Applicable Certificate shall be permitted unless the corresponding Escrow Receipt is attached thereto and is also so transferred or exchanged. By acceptance of any Applicable Certificate to which an Escrow
Receipt is attached, each Holder of such a Applicable Certificate acknowledges and accepts the restrictions on transfer of the Escrow Receipt set forth herein and in the Escrow Agreement. 
  

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 [Trust Supplement No. 2009-2B-O] 
  

 ARTICLE IV 
 DEFAULT 
 Section 4.01. Purchase Rights
of Certificateholders. (a) At any time after the occurrence and during the continuation of a Certificate Buyout Event (i) each Applicable Certificateholder (other than the Company or any of its Affiliates) shall have the right to
purchase, for the purchase price set forth in the Class A Trust Agreement, all, but not less than all, of the Class A Certificates upon 15 days’ written notice to the Class A Trustee and each other Applicable Certificateholder,
on the third Business Day next following the expiry of such 15-day notice period, provided that (A) if prior to the end of such 15 day period any other Applicable Certificateholder (other than the Company or any of its Affiliates)
notifies such purchasing Applicable Certificateholder that such other Applicable Certificateholder wants to participate in such purchase, then such other Applicable Certificateholder (other than the Company or any of its Affiliates) may join with
the purchasing Applicable Certificateholder to purchase all, but not less than all, of the Class A Certificates pro rata based on the Fractional Undivided Interest in the Applicable Trust held by each such Applicable Certificateholder and
(B) if prior to the end of such 15 day period any other Applicable Certificateholder fails to notify the purchasing Applicable Certificateholder of such other Applicable Certificateholder’s desire to participate in such a purchase, then
such other Applicable Certificateholder shall lose its right to purchase the Class A Certificates pursuant to this Section 4.01(a)(i). 
 (b) By acceptance of its Applicable Certificate, each Applicable Certificateholder agrees that at any time after the occurrence and during the continuation of a Certificate Buyout Event (i) if any
Additional Certificates are issued pursuant to the Additional Trust, each Additional Certificateholder (other than the Company or any of its Affiliates), shall have the right (which shall not expire upon any purchase of the Class A Certificates
pursuant to clause (a) above) to purchase all, but not less than all, of the Applicable Certificates and the Class A Certificates upon 15 days’ written notice to the Trustee and the Class A Trustee and each other Additional
Certificateholder, on the third Business Day next following the expiry of such 15-day notice period, provided that (A) if prior to the end of such 15 day period any other Additional Certificateholder (other than the Company or any of its
Affiliates) notifies such purchasing Additional Certificateholder that such other Additional Certificateholder wants to participate in such purchase, then such other Additional Certificateholder (other than the Company or any of its Affiliates) may
join with the purchasing Additional Certificateholder to purchase all, but not less than all, of the Applicable Certificates and the Class A Certificates pro rata based on the Fractional Undivided Interest in the Additional Trust held by each
such Additional Certificateholder and (B) if prior to the end of such 15 day period any other Additional Certificateholder fails to notify the purchasing Additional Certificateholder of such other Additional Certificateholder’s desire to
participate in such a purchase, then such other Additional Certificateholder shall lose its right to purchase the Applicable Certificates and the Class A Certificates pursuant to this Section 4.01(b)(i); and 
 (ii) if any Refinancing Certificates are issued, each Refinancing Certificateholder shall have the same right (subject to the same terms and
conditions) to purchase Certificates pursuant to Section 4.01(a) (and to receive notice in connection therewith) as the Certificateholder of the Class that such Refinancing Certificates refinanced. 
  

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 The purchase price with respect to the Applicable Certificates shall be equal to the
Pool Balance of the Applicable Certificates, together with accrued and unpaid interest thereon to the date of such purchase, without premium, but including any other amounts then due and payable to the Applicable Certificateholders under the
Agreement, the Intercreditor Agreement, the Escrow Agreement or any Note Document or on or in respect of the Applicable Certificates; provided, however, that no such purchase of Applicable Certificates shall be effective unless the
purchaser(s) shall certify to the Trustee that contemporaneously with such purchase, such purchaser(s) is (are) purchasing, pursuant to the terms of the Agreement and the Other Agreements, all of the Applicable Certificates and Class A
Certificates. Each payment of the purchase price of the Applicable Certificates referred to in the first sentence hereof shall be made to an account or accounts designated by the Trustee and each such purchase shall be subject to the terms of this
Section 4.01. Each Applicable Certificateholder agrees by its acceptance of its Applicable Certificate that (at any time after the occurrence of a Certificate Buyout Event) it will, upon payment from Additional Certificateholder(s) of the
purchase price set forth in the first sentence of this paragraph, (i) forthwith sell, assign, transfer and convey to the purchaser(s) thereof (without recourse, representation or warranty of any kind except for its own acts), all of the right,
title, interest and obligation of such Applicable Certificateholder in the Agreement, the Escrow Agreement, the Deposit Agreement, the Intercreditor Agreement, the Liquidity Facility, the Note Purchase Agreement, the Note Documents and all
Applicable Certificates and Escrow Receipts held by such Applicable Certificateholder (excluding all right, title and interest under any of the foregoing to the extent such right, title or interest is with respect to an obligation not then due and
payable as respects any action or inaction or state of affairs occurring prior to such sale) (and the purchaser shall assume all of such Applicable Certificateholder’s obligations under the Agreement, the Escrow Agreement, the Deposit
Agreement, the Intercreditor Agreement, the Liquidity Facility, the Note Purchase Agreement, the Note Documents and all such Applicable Certificates and Escrow Receipts), (ii) if such purchase occurs after a record date specified in
Section 2.03(a) of the Escrow Agreement relating to the distribution of unused Deposits and/or accrued and unpaid interest on Deposits and prior to or on the related distribution date thereunder, forthwith turn over to the purchaser(s) of its
Applicable Certificates all amounts, if any, received by it on account of such distribution, and (iii) if such purchase occurs after a Record Date relating to any distribution and prior to or on the related Distribution Date, forthwith turn
over to the purchaser(s) of its Applicable Certificate all amounts, if any, received by it on account of such distribution. The Applicable Certificates will be deemed to be purchased on the date payment of the purchase price is made notwithstanding
the failure of the Applicable Certificateholders to deliver any Applicable Certificates and, upon such a purchase, (I) the only rights of the Applicable Certificateholders will be to deliver the Applicable Certificates to the purchaser(s) and
receive the purchase price for such Applicable Certificates and (II) if the purchaser(s) shall so request, such Applicable Certificateholder will comply with all the provisions of Section 3.04 of the Basic Agreement to enable new
Applicable Certificates to be issued to the purchaser in such denominations as it shall request. All charges and expenses in connection with the issuance of any such new Applicable Certificates shall be borne by the purchaser thereof. 
 As used in this Section 4.01 and elsewhere in this Trust Supplement, the terms “Additional Certificate”, “Additional
Certificateholder”, “Additional Equipment Notes”, “Additional Trust”, “Class A Certificate”, “Class A Certificateholder”, “Class A Trust”, “Class A Trust Agreement”, “Class A
Trustee”, “Refinancing Certificates”, “Refinancing Certificateholder”, “Refinancing Equipment Notes” and “Refinancing Trust” shall have the respective meanings assigned to such terms in the Intercreditor
Agreement. 
  

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 (c) This Section 4.01 supersedes and replaces Section 6.01(b) of the Basic
Agreement, with respect to the Applicable Trust. 
 ARTICLE V 
 THE TRUSTEE 
 Section 5.01. Delivery of Documents; Delivery Dates. (a) The Trustee is hereby directed (i) to execute and deliver the Intercreditor Agreement, the Escrow Agreement and the Note Purchase Agreement on or prior
to the Issuance Date, each in the form delivered to the Trustee by the Company, and (ii) subject to the respective terms thereof, to perform its obligations thereunder. Upon request of the Company and the satisfaction or waiver of the closing
conditions specified in the Underwriting Agreement, the Trustee shall execute, deliver, authenticate, issue and sell Applicable Certificates in authorized denominations equaling in the aggregate the amount set forth, with respect to the Applicable
Trust, in Schedule I to the Underwriting Agreement evidencing the entire ownership interest in the Applicable Trust, which amount equals the maximum aggregate principal amount of Equipment Notes which may be purchased by the Trustee pursuant to
the Note Purchase Agreement. Except as provided in Sections 3.03 and 3.06 of the Basic Agreement, the Trustee shall not execute, authenticate or deliver Applicable Certificates in excess of the aggregate amount specified in this paragraph. The
provisions of this Section 5.01(a) supersede and replace the first sentence of Section 3.02(a) of the Basic Agreement, with respect to the Applicable Trust. 
 (b) On or after the Issuance Date, the Company may deliver from time to time to the Trustee a Closing Notice relating to one or more Equipment Notes. After receipt of a Closing Notice and in any case no
later than one Business Day prior to a Closing Date as to which such Closing Notice relates (the “Applicable Closing Date”), the Trustee shall (as and when specified in the Closing Notice) instruct the Escrow Agent to provide a Notice of
Financing Withdrawal to the Depositary requesting (A) the withdrawal of one or more Deposits on the Applicable Closing Date in accordance with and to the extent permitted by the terms of the Escrow Agreement and the Deposit Agreement and
(B) the payment of all, or a portion, of such Deposit or Deposits in an amount equal in the aggregate to the purchase price of such Equipment Notes to or on behalf of the Company, all as shall be described in the Closing Notice. The Trustee
shall (as and when specified in such Closing Notice), subject to the conditions set forth in Section 2 of the Note Purchase Agreement, enter into and perform its obligations under each Participation Agreement specified in such Closing Notice
(the “Applicable Participation Agreements”) and cause such certificates, documents and legal opinions relating to the Trustee to be duly delivered as required by the Applicable Participation Agreements. If at any time prior to the
Applicable Closing Date, the Trustee receives a notice of postponement pursuant to Section 1(e) of the Note Purchase Agreement, then the Trustee shall give the Depositary (with a copy to the Escrow Agent) a notice of cancellation of such Notice
of Financing Withdrawal relating to such Deposit or Deposits on such Applicable Closing Date. Upon satisfaction of the conditions specified in the Note Purchase Agreement and the Applicable Participation Agreements, the Trustee shall purchase the
applicable Equipment Notes with the proceeds of the

  

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withdrawals of one or more Deposits made on the Applicable Closing Date in accordance with the terms of the Deposit Agreement and the Escrow Agreement. The purchase price of such Equipment Notes
shall equal the principal amount of such Equipment Notes. Amounts withdrawn from such Deposit or Deposits in excess of the purchase price of the Equipment Notes or to the extent not applied on the Applicable Closing Date to the purchase price of the
Equipment Notes, shall be re-deposited by the Trustee with the Depositary on the Applicable Closing Date in accordance with the terms of the Deposit Agreement. The provisions of this Section 5.01(b) supersede and replace the provisions of
Section 2.02 of the Basic Agreement with respect to the Applicable Trust. 
 (c) The Trustee acknowledges its acceptance of
all right, title and interest in and to the Trust Property to be acquired pursuant to Section 5.01(b) of this Trust Supplement, the Note Purchase Agreement and each Applicable Participation Agreement, and declares that it holds and will hold
such right, title and interest for the benefit of all present and future Applicable Certificateholders, upon the trusts set forth in the Agreement. By its acceptance of an Applicable Certificate, each initial Applicable Certificateholder, as a
grantor of the Applicable Trust, joins with the Trustee in the creation of the Applicable Trust. The provisions of this Section 5.01(c) supersede and replace the provisions of Section 2.03 of the Basic Agreement with respect to the
Applicable Trust. 
 Section 5.02. Withdrawal of Deposits. If any Deposits remain outstanding on the
Business Day next succeeding the Cut-off Date, the Trustee shall promptly give the Escrow Agent notice that the Trustee’s obligation to purchase Equipment Notes under the Note Purchase Agreement has terminated and instruct the Escrow Agent to
provide a notice of Final Withdrawal to the Depositary substantially in the form of Exhibit B to the Deposit Agreement (the “Final Withdrawal Notice”). 
 Section 5.03. The Trustee. (a) Subject to Section 5.04 of this Trust Supplement and Section 7.15 of the
Basic Agreement, the Trustee shall not be responsible in any manner whatsoever for or in respect of the validity or sufficiency of this Trust Supplement, the Escrow Agreement, the Deposit Agreement or the Note Purchase Agreement or the due execution
hereof or thereof by the Company or the other parties thereto (other than the Trustee), or for or in respect of the recitals and statements contained herein or therein, all of which recitals and statements are made solely by the Company, except that
the Trustee hereby represents and warrants that each of this Trust Supplement, the Basic Agreement, each Applicable Certificate, the Intercreditor Agreement, the Escrow Agreement and the Note Purchase Agreement has been executed and delivered by one
of its officers who is duly authorized to execute and deliver such document on its behalf. 
 (b) Except as herein otherwise
provided and except during the continuation of an Event of Default in respect of the Applicable Trust created hereby, 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 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 Agreement, as fully to all intents as if the same were herein
set forth at length. 
  

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 Section 5.04. Representations and Warranties of the Trustee. The
Trustee hereby represents and warrants that: 
 (a) the Trustee has full power, authority and legal right to execute, deliver
and perform this Trust Supplement, the Intercreditor Agreement, the Escrow Agreement, the Note Purchase Agreement and the Note Documents to which it is or is to become a party and has taken all necessary action to authorize the execution, delivery
and performance by it of this Trust Supplement, the Intercreditor Agreement, the Escrow Agreement, the Note Purchase Agreement and the Note Documents to which it is or is to become a party; 
 (b) the execution, delivery and performance by the Trustee of this Trust Supplement, the Intercreditor Agreement, the Escrow Agreement, the
Note Purchase Agreement and the Note Documents to which it is or is to become a party (i) will not violate any provision of any United States federal law or the law of the state of the United States where it is located governing the banking and
trust powers of the Trustee or any order, writ, judgment, or decree of any court, arbitrator or governmental authority applicable to the Trustee or any of its assets, (ii) will not violate any provision of the articles of association or by-laws
of the Trustee, and (iii) will not violate any provision of, or constitute, with or without notice or lapse of time, a default under, or result in the creation or imposition of any lien on any properties included in the Trust Property pursuant
to the provisions of any mortgage, indenture, contract, agreement or other undertaking to which it is a party, which violation, default or lien could reasonably be expected to have an adverse effect on the Trustee’s performance or ability to
perform its duties hereunder or thereunder or on the transactions contemplated herein or therein; 
 (c) the execution, delivery
and performance by the Trustee of this Trust Supplement, the Intercreditor Agreement, the Escrow Agreement, the Note Purchase Agreement and the Note Documents to which it is or is to become a party will not require the authorization, consent, or
approval of, the giving of notice to, the filing or registration with, or the taking of any other action in respect of, any governmental authority or agency of the United States or the state of the United States where it is located regulating the
banking and corporate trust activities of the Trustee; and 
 (d) this Trust Supplement, the Intercreditor Agreement, the Escrow
Agreement, the Note Purchase Agreement and the Note Documents to which it is or is to become a party have been, or will be, as applicable, duly executed and delivered by the Trustee and constitute, or will constitute, as applicable, the legal, valid
and binding agreements of the Trustee, enforceable against it in accordance with their respective terms; provided, however, that enforceability may be limited by (i) applicable bankruptcy, insolvency, reorganization, moratorium or
similar laws affecting the rights of creditors generally and (ii) general principles of equity. 
 Section 5.05.
Trustee Liens. The Trustee in its individual capacity agrees, in addition to the agreements contained in Section 7.17 of the Basic Agreement, that it will at its own cost and expense promptly take any action as may be necessary to
duly discharge and satisfy in full any Trustee’s Liens on or with respect to the Trust Property which is attributable to the Trustee in its individual capacity and which is unrelated to the transactions contemplated by the Intercreditor
Agreement or the Note Purchase Agreement. 
  

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 ARTICLE VI 
 ADDITIONAL AMENDMENT; SUPPLEMENTAL AGREEMENTS 
 Section 6.01. Amendment of Section 5.02 of the Basic Agreement. Section 5.02 of the Basic Agreement shall be amended, with respect to the Applicable Trust, by (i) replacing the phrase “of the Note
Documents of this Agreement” set forth in paragraph (b) thereof with the phrase “of the Note Documents, of the Note Purchase Agreement and of this Agreement” and (ii) replacing the phrase “of this Agreement and any Note
Document” set forth in the last paragraph of Section 5.02 with the phrase “of this Agreement, the Note Purchase Agreement and any Note Document”. 
 Section 6.02. Supplemental Agreements Without Consent of Applicable Certificateholders. Without limitation of Section 9.01 of the Basic Agreement, under the terms of, and subject
to the limitations contained in, Section 9.01 of the Basic Agreement, the Company may (but will not be required to), and the Trustee (subject to Section 9.03 of the Basic Agreement) shall, at the Company’s request, (i) at any
time and from time to time, enter into one or more agreements supplemental to the Agreement, the Escrow Agreement, the Deposit Agreement, the Intercreditor Agreement or the Note Purchase Agreement, for any of the purposes set forth in clauses
(1) through (9) of such Section 9.01 and other matters incidental thereto or otherwise contemplated by Section 2.01(b) of the Basic Agreement, subject to the provisions of Section 4(a)(i) of the Note Purchase Agreement and
Section 9.1 of the Intercreditor Agreement, and (ii) at any time and from time to time subsequent to the Cut-off Date, enter into one or more agreements supplemental to the Agreement, the Intercreditor Agreement or the Note Purchase
Agreement to provide for the formation of one or more Refinancing Trusts, the issuance of Refinancing Certificates, the purchase by any Refinancing Trust of applicable Refinancing Equipment Notes or a single Additional Trust, the issuance of
Additional Certificates, the purchase by the Additional Trust of applicable Additional Equipment Notes and other matters incidental thereto or as otherwise contemplated by Section 2.01(b) of the Basic Agreement, subject to the provisions of
Section 4(a)(i) of the Note Purchase Agreement and Section 9.1(c) of the Intercreditor Agreement. All references in clauses (4), (6) and (7) of Section 9.01 of the Basic Agreement to “any Note Purchase Agreement or any
Liquidity Facility” shall also be deemed to refer to “the Note Purchase Agreement, the Liquidity Facility, the Escrow Agreement or the Deposit Agreement”. 
 Section 6.03. Supplemental Agreements with Consent of Applicable Certificateholders. Without limitation of Section 9.02 of the Basic Agreement, the provisions of
Section 9.02 of the Basic Agreement shall apply to agreements or amendments for the purpose of adding any provisions to or changing in any manner or eliminating any of the provisions of the Escrow Agreement, the Deposit Agreement, the Liquidity
Facility, the Intercreditor Agreement or the Note Purchase Agreement or modifying in any manner the rights and obligations of the Applicable Certificateholders under the Escrow Agreement, the Deposit Agreement, the Liquidity Facility, the
Intercreditor Agreement or the Note Purchase Agreement; provided that the provisions of Section 9.02(1) of the Basic Agreement shall be deemed to include reductions in any manner of, or delay in the timing of, any receipt by the
Applicable Certificateholders of payments upon the Deposits. 
  

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 Section 6.04. Consent of Holders of Certificates Issued under Other
Trusts. Notwithstanding any provision in Section 6.02 or Section 6.03 of this Trust Supplement to the contrary, no amendment or modification of Section 4.01 of this Trust Supplement shall be effective unless the trustee for
each Class of Certificates affected by such amendment or modification shall have consented thereto. 
 ARTICLE VII 

 TERMINATION OF TRUST 
 Section 7.01. Termination of the Applicable Trust. The respective obligations and responsibilities of the Company and the Trustee with respect to the Applicable Trust shall terminate
upon the earlier of (A) the completion of the assignment, transfer and discharge described in the first sentence of the immediately following paragraph and (B) distribution to all Applicable Certificateholders and the Trustee 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; provided, however, that in no event shall the Applicable Trust continue beyond one hundred ten
(110) years following the date of the execution of this Trust Supplement. 
 Upon the earlier of (i) the first
Business Day after March 8, 2010 and (ii) the fifth Business Day following the date on which a Triggering Event occurs (such date, the “Transfer Date”), or, if later the date on which all of the conditions set forth in the
immediately following sentence have been satisfied, the Trustee is hereby directed (subject only to the immediately following sentence) to, and the Company shall direct the institution that will serve as the Related Trustee under the Related Pass
Through Trust Agreement to, execute and deliver the Assignment and Assumption Agreement, pursuant to which the Trustee shall assign, transfer and deliver all of the Trustee’s right, title and interest to the Trust Property to the Related
Trustee under the Related Pass Through Trust Agreement. The Trustee and the Related Trustee shall execute and deliver the Assignment and Assumption Agreement upon the satisfaction of the following conditions: 
 (a) the Trustee, the Related Trustee and each of the Rating Agencies then rating the Applicable Certificates shall have received an
Officer’s Certificate and an Opinion of Counsel dated the date of the Assignment and Assumption Agreement and each satisfying the requirements of Section 1.02 of the Basic Agreement, which Opinion of Counsel shall be substantially to the
effect set forth below and may be relied upon by the Beneficiaries (as defined in the Assignment and Assumption Agreement): 
 (i) upon the execution and delivery thereof by the parties thereto in accordance with the terms of the Agreement and the Related Pass Through Trust Agreement, the Assignment and Assumption Agreement will
constitute the valid and binding obligation of each of the parties thereto enforceable against each such party in accordance with its terms 
 (ii) upon the execution and delivery of the Assignment and Assumption Agreement in accordance with the terms of the Agreement and the Related Pass Through Trust Agreement, each of the Applicable
Certificates then Outstanding will be entitled to the benefits of the Related Pass Through Trust Agreement; 
  

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 (iii) the Related Trust is not required to be registered as an
investment company under the Investment Company Act of 1940, as amended; 
 (iv) the Related Pass Through Trust
Agreement constitutes the valid and binding obligation of the Company enforceable against the Company in accordance with its terms; and 
 (v) neither the execution and delivery of the Assignment and Assumption Agreement in accordance with the terms of the Agreement and the Related Pass Through Trust Agreement, nor the consummation by the
parties thereto of the transactions contemplated to be consummated thereunder on the date thereof, will violate any law or governmental rule or regulation of the State of New York or the United States of America known to such counsel to be
applicable to the transactions contemplated by the Assignment and Assumption Agreement; and 
 (b) The Trustee and the Company
shall have received (x) a copy of the articles of incorporation and bylaws of the Related Trustee certified as of the Transfer Date by the Secretary or Assistant Secretary of such institution and (y) a copy of the filing (including all
attachments thereto) made by the institution serving as the Related Trustee with the Office of the Superintendent, State of New York Banking Department for the qualification of the Related Trustee under Section 131(3) of the New York Banking
Law. 
 Upon the execution of the Assignment and Assumption Agreement by the parties thereto, the Applicable Trust shall be
terminated, the Applicable Certificateholders shall receive beneficial interests in the Related Trust in exchange for their interests in the Applicable Trust equal to their respective beneficial interests in the Applicable Trust, and the Outstanding
Applicable Certificates representing Fractional Undivided Interests in the Applicable Trust shall be deemed for all purposes of the Agreement and the Related Pass Through Trust Agreement, without further signature or action of any party or
Applicable Certificateholder, to be certificates representing the same fractional undivided interests in the Related Trust and its trust property. By acceptance of its Applicable Certificate, each Applicable Certificateholder consents to such
assignment, transfer and delivery of the Trust Property to the trustee of the Related Trust upon the execution and delivery of the Assignment and Assumption Agreement. 
 In connection with the occurrence of the event set forth in clause (B) above, notice of such termination, specifying the Distribution Date upon which the Applicable Certificateholders may surrender
their Applicable Certificates to the Trustee for payment of the final distribution and cancellation, shall be mailed promptly by the Trustee to Applicable Certificateholders not earlier than the 60th day and not later than the 20th day next
preceding such final Distribution Date specifying (A) the Distribution Date upon which the proposed final payment of the Applicable Certificates will be made upon presentation and surrender of Applicable Certificates at the office or agency of
the Trustee therein specified, (B) the amount of any such proposed final payment, and (C) that the Record Date otherwise applicable to such Distribution Date is not applicable, payments being made only upon presentation and

  

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surrender of the Applicable Certificates at the office or agency of the Trustee therein specified. The Trustee shall give such notice to the Registrar at the time such notice is given to
Applicable Certificateholders. Upon presentation and surrender of the Applicable Certificates in accordance with such notice, the Trustee shall cause to be distributed to Applicable Certificateholders such final payments. 
 In the event that all of the Applicable Certificateholders shall not surrender their Applicable Certificates for cancellation within six
months after the date specified in the above-mentioned written notice, the Trustee shall give a second written notice to the remaining Applicable Certificateholders to surrender their Applicable Certificates for cancellation and receive the final
distribution with respect thereto. No additional interest shall accrue on the Applicable Certificates after the Distribution Date specified in the first written notice. In the event that any money held by the Trustee for the payment of distributions
on the Applicable Certificates shall remain unclaimed for two years (or such lesser time as the Trustee shall be satisfied, after sixty days’ notice from the Company, is one month prior to the escheat period provided under applicable law) after
the final distribution date with respect thereto, the Trustee shall pay to each Loan Trustee the appropriate amount of money relating to such Loan Trustee and shall give written notice thereof to the Company. 
 (c) The provisions of this Section 7.01 supersede and replace the provisions of Section 11.01 of the Basic Agreement in its
entirety, with respect to the Applicable Trust. 
 ARTICLE VIII 
 TRANSFER OF THE APPLICABLE CERTIFICATES 
 Section 8.01. Restrictive Legends. All Applicable Certificates issued pursuant to the Agreement shall bear a legend to the following effect (the “Restrictive
Legend”): 
 THIS CERTIFICATE IS SUBJECT TO TRANSFER RESTRICTIONS. BY ITS ACQUISITION HEREOF, THE HOLDER (1) REPRESENTS THAT IT IS
A “QUALIFIED INSTITUTIONAL BUYER” (AS DEFINED IN RULE 144A UNDER THE SECURITIES ACT OF 1933, AS AMENDED); (2) AGREES THAT IT WILL NOT RESELL OR OTHERWISE TRANSFER THIS CERTIFICATE EXCEPT TO A “QUALIFIED INSTITUTIONAL BUYER”
(AS DEFINED IN RULE 144A UNDER THE SECURITIES ACT OF 1933, AS AMENDED); AND (3) AGREES THAT IF IT SHOULD RESELL OR OTHERWISE TRANSFER THIS CERTIFICATE IT WILL DELIVER TO EACH PERSON TO WHOM THIS CERTIFICATE IS TRANSFERRED A NOTICE SUBSTANTIALLY
TO THE EFFECT OF THIS LEGEND. IN CONNECTION WITH ANY TRANSFER OF THIS CERTIFICATE, THE TRANSFEREE MUST COMPLETE THE FORM ON THE REVERSE HEREOF RELATING TO THE MANNER OF SUCH TRANSFER AND SUBMIT SUCH FORM TO THE TRUSTEE. TRUST SUPPLEMENT NO.
2009-2B-O TO THE PASS THROUGH TRUST AGREEMENT CONTAINS A PROVISION REQUIRING THE REGISTRAR TO REFUSE TO REGISTER ANY TRANSFER OF THIS CERTIFICATE IN VIOLATION OF THE FOREGOING RESTRICTIONS. 
  

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 Section 8.02. Amendment of Section 3.04 of the Basic
Agreement. Sections 8.03 and 8.04 of this Trust Supplement supersede and replace Section 3.04 of the Basic Agreement, with respect to the Applicable Trust. 
 Section 8.03. Transfer and Exchange. The Trustee shall cause to be kept at the office or agency to be maintained by it in accordance with the provisions of Section 7.12 of the
Basic Agreement a register (the “Register”) of the Applicable Certificates in which, subject to such reasonable regulations as it may prescribe, the Trustee shall provide for the registration of such Applicable Certificates and of
transfers and exchanges of such Applicable Certificates as herein provided. The Trustee shall initially be the registrar (the “Registrar”) for the purpose of registering such Applicable Certificates and transfers and exchanges of
such Applicable Certificates as herein provided. 
 All Applicable Certificates issued upon any registration of transfer or
exchange of Applicable Certificates shall be valid obligations of the Applicable Trust, evidencing the same interest therein, and entitled to the same benefits under this Agreement, as the Applicable Certificates surrendered upon such registration
of transfer or exchange. 
 Upon surrender for registration of transfer of any Applicable Certificate at the Corporate Trust
Office or such other office or agency with the form of transfer notice thereon duly completed and executed, and otherwise complying with the terms of this Agreement, including providing evidence of compliance with any restrictions on transfer, in
form satisfactory to the Trustee and the Registrar, the Trustee shall execute, authenticate and deliver, in the name of the designated transferee or transferees, one or more new Applicable Certificates of like series, in authorized denominations of
a like aggregate Fractional Undivided Interest. Whenever any Applicable Certificates are so surrendered for exchange, the Trustee shall execute, authenticate and deliver the Applicable Certificates that the Applicable Certificateholder making the
exchange is entitled to receive. Every Applicable Certificate presented or surrendered for registration of transfer or exchange shall be duly endorsed or accompanied by a written instrument of transfer in form satisfactory to the Trustee and the
Registrar duly executed by the Applicable Certificateholder thereof or its attorney duly authorized in writing. 
 The Registrar
shall not register the transfer or exchange of any Applicable Certificate in the name of any Person unless and until evidence satisfactory to the Company and the Trustee that the conditions to any such transfer or exchange set forth in
Section 8.04 shall have been satisfied is submitted to them. Such conditions shall be deemed satisfied with respect to a transfer if the transferor and transferee duly execute and deliver to the Trustee the transfer notice in the form attached
to the Applicable Certificate, unless the Company or the Trustee has a reasonable basis for requesting additional evidence. 
 To permit registrations of transfers and exchanges in accordance with the terms, conditions and restrictions hereof, the Trustee shall execute and authenticate Applicable Certificates at the Registrar’s request. No service charge shall
be made to an Applicable Certificateholder for any registration of transfer or exchange of Applicable Certificates, but the Trustee shall require payment of a sum sufficient to cover any tax or governmental charge that may be imposed in connection
with any transfer or exchange of Applicable Certificates. All Applicable Certificates surrendered for registration of transfer or exchange shall be canceled and subsequently destroyed by the Trustee. 
  

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 Section 8.04. Special Transfer Provisions. 
 (a) Transfers Limited to QIBs. If an Applicable Certificate is to be transferred, the Registrar shall register the transfer only if
such transfer is being made to a proposed transferee who has provided the transfer notice attached to the form of Applicable Certificate stating that it is purchasing the Applicable Certificate for its own account or an account with respect to which
it exercises sole investment discretion and that it and any such account is a QIB within the meaning of Rule 144A. 
 (b)
Restrictive Legend. Upon the transfer, exchange or replacement of Applicable Certificates, the Registrar shall deliver only Applicable Certificates that bear the Restrictive Legend. 
 (c) General. By acceptance of any Applicable Certificate, each Holder of such an Applicable Certificate will be deemed to:

 (i) Represent that it is accepting such Applicable Certificate for its own account or an account with respect
to which it exercises sole investment discretion and that it and any such account is a QIB; 
 (ii) Agree that
any sale or other transfer by it of any Applicable Certificate will only be made to a QIB; 
 (iii) Agree that it
will, and each subsequent transferee will be required to, deliver to each person to whom it transfers Applicable Certificates notice of these restrictions on transfer of the Applicable Certificates; 
 (iv) Agree that no registration of the transfer of an Applicable Certificate will be made unless the transferee completes and
submits to the Trustee the form included on the reverse of the Applicable Certificate in which it states that it is purchasing the Applicable Certificate for its own account or an account with respect to which it exercises sole investment discretion
and that it and any such account is a QIB; 
 (v) Understand that the Applicable Certificates will bear a legend
substantially to the effect of the Restrictive Legend; 
 (vi) Acknowledge that the Company, the Trustee, the
Underwriters, and others will rely on the truth and accuracy of the foregoing acknowledgments, representations, warranties and agreements and agree that, if any of the acknowledgments, representations, warranties and agreements deemed to have been
made by its purchase of the Applicable Certificates is no longer accurate, it shall promptly notify the Company, the Trustee and the Underwriters. If it is acquiring any Applicable Certificates as a fiduciary or agent of one or more investor
accounts, it represents that it has sole investment discretion with respect to each such investor account and that it has full power to make the foregoing acknowledgments, representations and agreements on behalf of each such investor account;

  

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 (vii) Acknowledge that the foregoing restrictions apply to holders of
beneficial interests in the Applicable Certificates as well as to registered holders of Applicable Certificates; and 
 (viii) Acknowledge that the Trustee will not be required to accept for registration of transfer any Applicable Certificate unless evidence satisfactory to the Company and the Trustee that the restrictions on transfer set forth herein have
been complied with is submitted to them. 
 Until such time as no Applicable Certificates remain Outstanding, the Registrar
shall retain copies of all letters, notices and other written communications received pursuant to this Section 8.04. The Trustee, if not the Registrar at such time, shall have the right to inspect and make copies of all such letters, notices or
other written communications at any reasonable time upon the giving of reasonable written notice to the Registrar. 
 ARTICLE IX 
 MISCELLANEOUS PROVISIONS 
 Section 9.01. 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. All replacements of provisions of, and other
modifications of the Basic Agreement set forth in this Trust Supplement are solely with respect to the Applicable Trust. 
 Section 9.02. GOVERNING LAW. NOTWITHSTANDING SECTION 12.05 OF THE BASIC AGREEMENT, THIS AGREEMENT AND, UNTIL THE TRANSFER DATE, THE APPLICABLE CERTIFICATES SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE
STATE OF DELAWARE. THIS SECTION 9.02 SUPERSEDES AND REPLACES SECTION 12.05 OF THE BASIC AGREEMENT WITH RESPECT TO THE APPLICABLE TRUST. 
 Section 9.03. 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 and the same instrument. 
 Section 9.04. Intention of Parties. The parties hereto
intend that the Applicable Trust be classified for U.S. federal income tax purposes as a grantor trust under Subpart E, Part I of Subchapter J of the Internal Revenue Code of 1986, as amended, and not as a trust or association taxable
as a corporation or as a partnership. Each Applicable Certificateholder and Investor, by its acceptance of its Applicable Certificate or a beneficial interest therein, agrees to treat the Applicable Trust as a grantor trust for all U.S. federal,
state and local income tax purposes and shall not take any position inconsistent thereto for any such purposes, unless required by law. The powers granted and obligations undertaken pursuant to the Agreement shall be so construed so as to further
such intent. 
  

 22 









 [Trust Supplement No. 2009-2B-O] 
  

 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 written above. 
  

			
	UNITED AIR LINES, INC.
		
	By:	 	  

	Name:	 	
	Title:	 	
	
	WILMINGTON TRUST COMPANY, as Trustee
		
	By:	 	  

	Name:	 	
	Title:	 	


  

 23 









 [Trust Supplement No. 2009-2B-O] 
  

 EXHIBIT A 
 FORM OF CERTIFICATE 
 Certificate 
 No. 
 [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.]* 
 THIS CERTIFICATE IS SUBJECT TO TRANSFER RESTRICTIONS. BY ITS ACQUISITION HEREOF, THE HOLDER (1) REPRESENTS THAT IT IS A “QUALIFIED INSTITUTIONAL BUYER” (AS DEFINED IN RULE 144A UNDER THE
SECURITIES ACT); (2) AGREES THAT IT WILL NOT RESELL OR OTHERWISE TRANSFER THIS CERTIFICATE EXCEPT TO A “QUALIFIED INSTITUTIONAL BUYER” (AS DEFINED IN RULE 144A UNDER THE SECURITIES ACT); AND (3) AGREES THAT IF IT SHOULD RESELL OR
OTHERWISE TRANSFER THIS CERTIFICATE IT WILL DELIVER TO EACH PERSON TO WHOM THIS CERTIFICATE IS TRANSFERRED A NOTICE SUBSTANTIALLY TO THE EFFECT OF THIS LEGEND. IN CONNECTION WITH ANY TRANSFER OF THIS CERTIFICATE, THE TRANSFEREE MUST COMPLETE THE
FORM ON THE REVERSE HEREOF RELATING TO THE MANNER OF SUCH TRANSFER AND SUBMIT SUCH FORM TO THE TRUSTEE. TRUST SUPPLEMENT NO. 2009-2B-O TO THE PASS THROUGH TRUST AGREEMENT CONTAINS A PROVISION REQUIRING THE REGISTRAR TO REFUSE TO REGISTER ANY
TRANSFER OF THIS CERTIFICATE IN VIOLATION OF THE FOREGOING RESTRICTIONS. 
 EITHER: (A) THE HOLDER IS NOT ACQUIRING THIS
CERTIFICATE OR AN INTEREST HEREIN WITH PLAN ASSETS OF ANY PLAN OR AN INDIVIDUAL RETIREMENT PLAN SUBJECT TO TITLE I OF THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF 1974, AS AMENDED (“ERISA”), OR SECTION 4975 OF THE INTERNAL
REVENUE CODE OF 1986, AS AMENDED (THE “CODE”); OR (B) THE HOLDER’S PURCHASE AND HOLDING OF THIS CERTIFICATE OR AN INTEREST HEREIN ARE EXEMPT FROM THE PROHIBITED TRANSACTION RESTRICTIONS OF SECTION 406(A) OF ERISA AND
SECTION 4975 OF THE CODE BY AN ADMINISTRATIVE CLASS PROHIBITED TRANSACTION EXEMPTION GRANTED BY THE DEPARTMENT OF LABOR. 
  
  

	*	This legend to appear on Book-Entry Certificates to be deposited with the Depository Trust Company. 

  

 EXHIBIT A 
 Page 1 









 [Trust Supplement No. 2009-2B-O] 
  

 UNITED AIR LINES PASS THROUGH TRUST 2009-2B-O 
 United Air Lines Pass Through Certificate, Series 2009-2B-O 
 Issuance Date: November 24, 2009 
 Final Maturity Date: January 15, 2016

 Evidencing A Fractional Undivided Interest In The United Air Lines Pass Through Trust 2009-2B-O, The Property Of Which Shall
Include Certain Equipment Notes Each Secured By An Aircraft Owned By United Air Lines, Inc. 
 $[        ] Fractional Undivided Interest 
 representing 0.0008880521% 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 United Air Lines Pass Through Trust 2009-2B-O (the “Trust”) created by Wilmington Trust Company, as trustee (the “Trustee”), pursuant to a Pass Through Trust
Agreement, dated as of June 26, 2007 (the “Basic Agreement”), between the Trustee and United Air Lines, Inc., a Delaware corporation (the “Company”), as supplemented by Trust Supplement No. 2009-2B-O
thereto, dated as of November 24, 2009 (the “Trust Supplement” and, together with the Basic Agreement, the “Agreement”), between the Trustee and 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 “United Air
Lines Pass Through Certificates, Series 2009-2B-O” (herein called the “Certificates”). This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement. By virtue of its acceptance
hereof, the holder of this Certificate (the “Certificateholder” and, together with all other holders of Certificates issued by the Trust, the “Certificateholders”) assents to and agrees to be bound by the provisions
of the Agreement and the Intercreditor Agreement. The property of the Trust includes certain Equipment Notes, the Parent Guarantee with respect to such Equipment Notes and all rights of the Trust to receive payments under the Intercreditor Agreement
and the Liquidity Facility (the “Trust Property”). Each issue of the Equipment Notes is secured by, among other things, a security interest in an Aircraft owned by 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. 
 Subject to and in accordance with the terms of the Agreement and the Intercreditor Agreement, from funds then available to the Trustee, there will be distributed on January 15 and July 15 of
each year (a “Regular Distribution Date”) commencing July 15, 2010, 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

  

 EXHIBIT A 
 Page 2 









 [Trust Supplement No. 2009-2B-O] 
  

 
Certificate and an amount equal to the sum of such Scheduled Payments. Subject to and in accordance with the terms of the Agreement and the Intercreditor Agreement, in the event that Special
Payments on the Equipment Notes 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 on the Equipment Notes, 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 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 by check mailed to the Person entitled thereto, without presentation or surrender of this Certificate or the making of any notation hereon, except that with respect to Certificates registered on the Record Date in the name of a Clearing
Agency (or its nominee), such distribution shall be made by wire transfer. 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 of
payment, all as more specifically set forth on the face hereof 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, privileges, 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 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. 
  

 EXHIBIT A 
 Page 3 









 [Trust Supplement No. 2009-2B-O] 
  

 As provided in the Agreement and subject to certain limitations set forth therein, 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. 
 Under certain circumstances set forth in Section 7.01 of the Trust Supplement, all of Trustee’s right, title and interest to the
Trust Property may be assigned, transferred and delivered to the Related Trustee of the Related Trust pursuant to the Assignment and Assumption Agreement. Upon the effectiveness of such Assignment and Assumption Agreement (the “Transfer”),
the Trust shall be terminated, the Certificateholders shall receive beneficial interests in the Related Trust in exchange for their interests in the Trust equal to their respective beneficial interests in the Trust, the Certificates representing
Fractional Undivided Interests in the Trust shall be deemed for all purposes of the Agreement and the Related Pass Through Trust Agreement to be certificates representing the same fractional undivided interests in the Related Trust and its trust
property. Each Certificateholder, by its acceptance of this Certificate or a beneficial interest herein, agrees to be bound by the Assignment and Assumption Agreement and subject to the terms of the Related Pass Through Trust Agreement as a
Certificateholder thereunder. From and after the Transfer, unless and to the extent the context otherwise requires, references herein to the Trust, the Agreement and the Trustee shall constitute references to the Related Trust, the Related Pass
Through Trust Agreement and the trustee of the Related Trust, respectively. 
 The Certificates are issuable only as registered
Certificates without coupons in minimum denominations of $1,000 Fractional Undivided Interest and integral multiples thereof, except that one Certificate may be issued in a different denomination. 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. 
 Each Certificateholder and Investor,
by its acceptance of this Certificate or a beneficial interest herein, agrees to treat the Trust as a grantor trust for all U.S. federal, state and local income tax purposes. 
  

 EXHIBIT A 
 Page 4 









 [Trust Supplement No. 2009-2B-O] 
  

 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 neither the Trustee, the Registrar, nor 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. 
 Any Person acquiring or accepting this Certificate or an interest herein will, by such acquisition or acceptance, be deemed to have represented and warranted to and for the benefit of the Company that
either: (i) the assets of an employee benefit plan subject to Title I of the Employee Retirement Income Security Act of 1974, as amended (“ERISA”), or of a plan subject to Section 4975 of the Internal Revenue Code of
1986, as amended (the “Code”), have not been used to purchase or hold this Certificate or an interest herein or (ii) the purchase and holding of this Certificate or an interest herein are exempt from the prohibited transaction
restrictions of ERISA and the Code pursuant to one or more prohibited transaction statutory or administrative exemptions. 
 By
acceptance of this Certificate, each Certificateholder will be deemed to: 
 (i) Represent that it is accepting this Certificate
for its own account or an account with respect to which it exercises sole investment discretion and that it and any such account is a QIB; 
 (ii) Agree that any sale or other transfer by it of this Certificate will only be made to a QIB; 
 (iii) Agree that it will deliver to each person to whom it transfers this Certificate notice of these restrictions on transfer of this Certificate; 
 (iv) Agree that no registration of the transfer of a Certificate will be made unless the transferee completes and submits to the Trustee the
form included on the reverse of this Certificate in which it states that it is purchasing this Certificate for its own account or an account with respect to which it exercises sole investment discretion and that it and any such account is a QIB;

 (v) Understand that this Certificate will bear a legend substantially to the effect of the Restrictive Legend; 
 (vi) Acknowledge that the Company, the Trustee, the Underwriters, and others will rely on the truth and accuracy of the foregoing
acknowledgments, representations, warranties and agreements and agree that, if any of the acknowledgments, representations, warranties and agreements deemed to have been made by its purchase of this Certificate is no longer accurate, it shall
promptly notify the Company, the Trustee and the Underwriters. If it is acquiring this Certificate as a fiduciary or agent of one or more investor accounts, it represents that it has sole investment discretion with respect to each such investor
account and that it has full power to make the foregoing acknowledgments, representations and agreements on behalf of each such investor account; 
  

 EXHIBIT A 
 Page 5 









 [Trust Supplement No. 2009-2B-O] 
  

 (vii) Acknowledge that the foregoing restrictions apply to holders of beneficial
interests in this Certificate as well as to registered holders of this Certificate; and 
 (viii) Acknowledge that the Trustee
will not be required to accept for registration of transfer this Certificate unless evidence satisfactory to the Company and the Trustee that the restrictions on transfer set forth herein have been complied with is submitted to them. 
 THE AGREEMENT AND, UNTIL THE TRANSFER, THIS CERTIFICATE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF
DELAWARE AND THE OBLIGATIONS, RIGHTS AND REMEDIES OF THE PARTIES HEREUNDER SHALL BE DETERMINED IN ACCORDANCE WITH SUCH LAWS. THE RELATED PASS THROUGH TRUST AGREEMENT AND, FROM AND AFTER THE TRANSFER, THIS CERTIFICATE SHALL BE GOVERNED BY AND
CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK AND THE OBLIGATIONS, RIGHTS AND REMEDIES OF THE PARTIES HEREUNDER SHALL BE DETERMINED IN ACCORDANCE WITH SUCH LAWS. 
 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. 
  

 EXHIBIT A 
 Page 6 









 [Trust Supplement No. 2009-2B-O] 
  

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

  

			
	UNITED AIR LINES PASS THROUGH TRUST 2009-2B-O
		
	By:	 	WILMINGTON TRUST COMPANY,
		 	as Trustee
		
	By:	 	  

	Name:	 	
	Title:	 	


  

 EXHIBIT A 
 Page 7 









 [Trust Supplement No. 2009-2B-O] 
  

 FORM OF THE TRUSTEE’S CERTIFICATE OF AUTHENTICATION 
 This is one of the Certificates referred to in the within-mentioned Agreement. 
  

			
	WILMINGTON TRUST COMPANY, as Trustee
		
	By:	 	  

	Name:	 	
	Title:	 	


  

 EXHIBIT A 
 Page 8 









 [Trust Supplement No. 2009-2B-O] 
  

 TRANSFER NOTICE 
 FORM OF TRANSFER NOTICE 
 FOR VALUE RECEIVED the
undersigned registered holder hereby sell(s), assign(s) and transfer(s) unto 
 Insert Taxpayer Identification No. 
                              
                              
 please print or typewrite name and address including zip code of assignee 
                              
 the within Certificate and all rights thereunder, hereby irrevocably constituting and appointing 
                              
 attorney to transfer said Certificate on the books of the Registrar with full power of substitution in the premises. 
                              
 In connection with any transfer of this Certificate, the undersigned confirms: 
 The Registrar shall not be obligated to register this Certificate in the name of any Person other than the Holder hereof unless and until
the conditions to any such transfer of registration set forth herein and in Section 8.04 of the Trust Supplement shall have been satisfied. 
  

					
	Date: [                    ,
        ]	 		  	[Name of Transferor]
			
		 		  	NOTE: The signature must correspond with the name as written upon the face of the within-mentioned instrument in every particular, without alteration or any change whatsoever.

	Signature Guarantee:
                                         
                      	 		  	

 TO BE COMPLETED BY PURCHASER 
 The undersigned represents and warrants that it is purchasing this Certificate for its own account or an account with respect to which it
exercises sole investment discretion and that it and any such account is a “qualified institutional buyer” within the meaning of Rule 144A under the Securities Act of 1933, as amended. 
  

 EXHIBIT A 
 Page 9 









 [Trust Supplement No. 2009-2B-O] 
  

 In addition, the undersigned has reviewed this Certificate and makes the
representations, agreements, understandings and acknowledgments deemed made by a Person acquiring or accepting this Certificate as set forth therein. 
  

					
	Date: [                    ]	 		  	  

		 		  	NOTE: To be executed by an executive officer.

  

 EXHIBIT A 
 Page 10 









 [Trust Supplement No. 2009-2B-O] 
  

 EXHIBIT B 
 [DTC Letter of Representations] 
  

 EXHIBIT B 
 Page 1 









 [Trust Supplement No. 2009-2B-O] 
  

 EXHIBIT C 
 FORM OF ASSIGNMENT AND ASSUMPTION AGREEMENT 
 United Air
Lines Pass Through Trust 2009-2B-O 
 ASSIGNMENT AND ASSUMPTION AGREEMENT (2009-2B-O), dated
                    , (the “Assignment Agreement”), between Wilmington Trust Company, a Delaware banking corporation
(“WTC”), not in its individual capacity except as expressly provided herein, but solely as trustee under the Pass Through Trust Agreement dated as of June 26, 2007 (as amended, modified or otherwise supplemented from time to
time, the “Basic Agreement”), as supplemented by the Trust Supplement No. 2009-2B-O dated as of November 24, 2009 (the “Trust Supplement” and together with the Basic Agreement, the
“Agreement”) in respect of the United Air Lines Pass Through Trust 2009-2B-O (the “Assignor”), and Wilmington Trust Company, a Delaware banking corporation, not in its individual capacity except as expressly
provided herein, but solely as trustee under the Basic Agreement as supplemented by the Trust Supplement No. 2009-2B-S dated as of November 24, 2009 (the “New Supplement”, and, together with the Basic Agreement, the
“New Agreement”) in respect of the United Air Lines Pass Through Trust Series 2009-2B-S (the “Assignee”). 
 W I T N E S S E T H: 
 WHEREAS, the parties hereto desire to effect on the date hereof (the “Transfer Date”) (a) the transfer by the Assignor to the Assignee of all of the right, title and interest
of the Assignor in, under and with respect to, among other things, the Trust Property and each of the documents listed in Schedule I hereto (the “Scheduled Documents”) and (b) the assumption by the Assignee of the
obligations of the Assignor (i) under the Scheduled Documents and (ii) in respect of the Applicable Certificates issued under the Agreement; and 
 WHEREAS, the Scheduled Documents permit such transfer upon satisfaction of certain conditions heretofore or concurrently herewith being complied with; 
 NOW, THEREFORE, in consideration of the premises and of the mutual covenants and agreements herein contained, the parties hereto do
hereby agree as follows (capitalized terms used herein without definition having the meaning ascribed thereto in the Agreement): 
 Section 1. Assignment. The Assignor does hereby sell, assign, convey, transfer and set over unto the Assignee as of the Transfer Date all of its present and future right, title and interest in, under and with respect to
the Trust Property and the Scheduled Documents and each other contract, agreement, document or instrument relating to the Trust Property or the Scheduled Documents (such other contracts, agreements, documents or instruments, together with the
Scheduled Documents, to be referred to as the “Assigned Documents”), and any proceeds therefrom, together with all documents and instruments evidencing any of such right, title and interest. 
 Section 2. Assumption. The Assignee hereby assumes for the benefit of the Assignor and each of the parties listed in
Schedule II hereto (collectively, the “Beneficiaries”) all of the duties and obligations of the Assignor, whenever accrued, pursuant to the Assigned Documents and hereby confirms that it shall be deemed a party to each of the
Assigned Documents to which the Assignor is

  

 EXHIBIT C 
 Page 1 









 [Trust Supplement No. 2009-2B-O] 
  

 
a party and shall be bound by all the terms thereof (including the agreements and obligations of the Assignor set forth therein) as if therein named as the Assignor. Further, the Assignee hereby
assumes for the benefit of the Assignor and the Beneficiaries all of the duties and obligations of the Assignor under the Outstanding Applicable Certificates and hereby confirms that the Applicable Certificates representing Fractional Undivided
Interests under the Agreement shall be deemed for all purposes of the Agreement and the New Agreement to be certificates representing the same fractional undivided interests under the New Agreement equal to their respective beneficial interests in
the trust created under the Agreement. 
 Section 3. Effectiveness. This Assignment Agreement shall be
effective upon the execution and delivery hereof by the parties hereto, and each Applicable Certificateholder, by its acceptance of its Applicable Certificate or a beneficial interest therein, agrees to be bound by the terms of this Assignment
Agreement. 
 Section 4. Payments. The Assignor hereby covenants and agrees to pay over to the Assignee, if
and when received following the Transfer Date, any amounts (including any sums payable as interest in respect thereof) paid to or for the benefit of the Assignor that, under Section 1 hereof, belong to the Assignee. 
 Section 5. Further Assurances. The Assignor shall, at any time and from time to time, upon the request of the Assignee,
promptly and duly execute and deliver any and all such further instruments and documents and take such further action as the Assignee may reasonably request to obtain the full benefits of this Assignment Agreement and of the rights and powers herein
granted. The Assignor agrees to deliver any Applicable Certificates, and all Trust Property, if any, then in the physical possession of the Assignor, to the Assignee. 
 Section 6. Representations and Warranties. (a) The Assignee represents and warrants to the Assignor and each of the Beneficiaries that: 
  

	 	(a)	it has all requisite power and authority and legal right to enter into and carry out the transactions contemplated hereby and to carry out and perform the obligations
of the “Pass Through Trustee” under the Assigned Documents; 

  

	 	(b)	on and as of the date hereof, the representations and warranties of the Assignee set forth in Section 7.15 of the Basic Agreement and Section 5.04 of the New
Supplement are true and correct. 

 (b) The Assignor represents and warrants to the Assignee that:

  

	 	(a)	it is duly incorporated, validly existing and in good standing under the laws of the State of Delaware and has the full trust power, authority and legal right under the
laws of the State of Delaware and the United States pertaining to its trust and fiduciary powers to execute and deliver this Assignment Agreement; 

  


 EXHIBIT C 
 Page 2 









 [Trust Supplement No. 2009-2B-O] 
  


	 	(b)	the execution and delivery by it of this Assignment Agreement and the performance by it of its obligations hereunder have been duly authorized by it and will not
violate its articles of association or by-laws or the provisions of any indenture, mortgage, contract or other agreement to which it is a party or by which it is bound; and 

  

	 	(c)	this Assignment Agreement constitutes the legal, valid and binding obligations of it enforceable against it in accordance with its terms, except as the same may be
limited by applicable bankruptcy, insolvency, reorganization, moratorium or similar laws affecting the rights of creditors generally and by general principles of equity, whether considered in a proceeding at law or in equity.


 Section 7. GOVERNING LAW. THIS ASSIGNMENT AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK INCLUDING MATTERS OF CONSTRUCTION, VALIDITY AND PERFORMANCE. 
 Section 8. Counterparts. This Assignment Agreement may be executed in any number of counterparts, all of which together shall constitute a single instrument. It shall not be necessary that any counterpart be signed by
both parties so long as each party shall sign at least one counterpart. 
 Section 9. Third Party
Beneficiaries. The Assignee hereby agrees, for the benefit of the Beneficiaries, that its representations, warranties and covenants contained herein are also intended to be for the benefit of each Beneficiary, and each Beneficiary shall be
deemed to be an express third party beneficiary with respect thereto, entitled to enforce directly and in its own name any rights or claims it may have against such party as such beneficiary. 
 Section 10. Notice. Promptly following the Transfer Date, the Assignee shall notify the Depositary of the occurrence of
the assignment hereunder and the name and contact information of the Assignee. 
 *    *    * 
  

 EXHIBIT C 
 Page 3 









 [Trust Supplement No. 2009-2B-O] 
  

 IN WITNESS WHEREOF, the parties hereto, through their respective officers
thereunto duly authorized, have duly executed this Agreement as of the day and year first above written. 
  

			
	ASSIGNOR:
	
	WILMINGTON TRUST COMPANY, not in its individual capacity except as expressly provided herein, but solely as trustee under the Pass Through Trust Agreement and
Trust Supplement in respect of the United Air Lines Pass Through Trust 2009-2B-O
		
	By:	 	  

	Title:	 	
	
	ASSIGNEE:
	
	WILMINGTON TRUST COMPANY, not in its individual capacity except as expressly provided herein, but solely as trustee under the Pass Through Trust Agreement and
Trust Supplement in respect of the United Air Lines Pass Through Trust 2009-2B-S
		
	By:	 	  

	Title:	 	


  

 EXHIBIT C 
 Page 4 









 [Trust Supplement No. 2009-2B-O] 
  

 SCHEDULE I 
 SCHEDULE OF ASSIGNED DOCUMENTS 
  

	(1)	Intercreditor Agreement dated as of November 24, 2009 among the Trustee, the Other Trustees, the Liquidity Provider, the liquidity provider relating to the
Class A Certificates and the Subordination Agent. 

  

	(2)	Escrow and Paying Agent Agreement (Class B) dated as of November 24, 2009 among the Escrow Agent, the Underwriters, the Trustee and the Paying Agent.


  

	(3)	Note Purchase Agreement dated as of November 24, 2009 among the Company, the Trustee, the Other Trustees, the Depositary, the Escrow Agent, the Paying Agent and
the Subordination Agent. 

  

	(4)	Deposit Agreement (Class B) dated as of November 24, 2009 between the Escrow Agent and the Depositary. 

  

	(5)	Each of the Operative Agreements (as defined in the Participation Agreement for each Aircraft) in effect as of the Transfer Date. 

  

 EXHIBIT C 
 Page 5 









 [Trust Supplement No. 2009-2B-O] 
  

 SCHEDULE II 
 SCHEDULE OF BENEFICIARIES 
 Wilmington Trust Company, not in its
individual capacity but solely as Subordination Agent 
 Wilmington Trust Company, not in its individual capacity but solely as Escrow Agent and
Paying Agent 
 Goldman Sachs Bank USA, as Liquidity Provider 
 JPMorgan Chase Bank, N.A., as Depositary 
 J.P. Morgan Securities Inc., as Underwriter 

Morgan Stanley & Co. Incorporated, as Underwriter 
 Goldman, Sachs & Co., as Underwriter 
 Citigroup Global Markets Inc., as Underwriter

 Credit Suisse Securities (USA) LLC, as Underwriter 
 Deutsche Bank Securities Inc., as Underwriter 
 United Air Lines, Inc. 
 Each of the other parties to the Assigned Documents 
  

 EXHIBIT C 
 Page 6