EX-4.2


 Exhibit 4.2 

EXECUTION VERSION 
 TRUST
SUPPLEMENT NO. 2017-1AA 
 Dated as of November 28, 2017 

between 
 SPIRIT AIRLINES, INC.

 and 
 WILMINGTON
TRUST, NATIONAL ASSOCIATION, 
 as Trustee, 

To 
 PASS THROUGH TRUST
AGREEMENT 
 Dated as of August 11, 2015 

Spirit Airlines Pass Through Trust 2017-1AA 

Spirit Airlines Pass Through Certificates, 

Series 2017-1AA 

  

					
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 Table of Contents 

 

							
	 	 	 	  	Page	 
		
	 Article I DEFINITIONS
	  	 	2	 
	 Section 1.01
	 	Definitions	  	 	2	 
		
	 Article II DECLARATION OF TRUST
	  	 	8	 
	 Section 2.01
	 	Declaration of Trust	  	 	8	 
	 Section 2.02
	 	Permitted Activities	  	 	8	 
		
	 Article III THE CERTIFICATES
	  	 	8	 
	 Section 3.01
	 	The Certificates	  	 	8	 
	 Section 3.02
	 	Terms and Conditions	  	 	8	 
		
	 Article IV ISSUANCE AND TRANSFER OF THE CLASS AA CERTIFICATES
	  	 	11	 
	 Section 4.01
	 	Issuance of Class AA Certificates	  	 	11	 
	 Section 4.02
	 	Legends	  	 	11	 
	 Section 4.03
	 	Book-Entry Provisions for Global Certificates	  	 	12	 
		
	 Article V DISTRIBUTION; STATEMENTS TO CERTIFICATEHOLDERS
	  	 	14	 
	 Section 5.01
	 	Statements to Certificateholders	  	 	14	 
		
	 Article VI DEFAULT
	  	 	15	 
	 Section 6.01
	 	Purchase Rights of Certificateholders	  	 	15	 
		
	 Article VII THE TRUSTEE
	  	 	18	 
	 Section 7.01
	 	Delivery of Documents; Delivery Dates	  	 	18	 
	 Section 7.02
	 	Withdrawal of Deposits	  	 	20	 
	 Section 7.03
	 	The Trustee	  	 	20	 
	 Section 7.04
	 	Representations and Warranties of the Trustee	  	 	20	 
	 Section 7.05
	 	Trustee Liens	  	 	21	 
		
	 Article VIII ADDITIONAL AMENDMENT; SUPPLEMENTAL AGREEMENTS
	  	 	21	 
	 Section 8.01
	 	Amendment of Sections 5.02, 6.07, 7.09, 8.04, 9.01, 12.01 and 12.02 of the Basic Agreement	  	 	21	 
	 Section 8.02
	 	Supplemental Agreements Without Consent of Class AA Certificateholders	  	 	21	 
	 Section 8.03
	 	Supplemental Agreements with Consent of Class AA Certificateholders	  	 	22	 
	 Section 8.04
	 	Consent of Trustees for Amendment of Section 6.01	  	 	23	 
	 Section 8.05
	 	Notice to Rating Agencies	  	 	23	 
		
	 Article IX MISCELLANEOUS PROVISIONS
	  	 	23	 
	 Section 9.01
	 	Final Termination Date	  	 	23	 
	 Section 9.02
	 	Basic Agreement Ratified	  	 	23	 
	 Section 9.03
	 	Governing Law	  	 	23	 
	 Section 9.04
	 	Counterparts	  	 	23	 
	 Section 9.05
	 	Intention of Parties	  	 	23	 
	 Section 9.06
	 	Submission to Jurisdiction	  	 	24	 
	 Section 9.07
	 	Successor and Assigns	  	 	24	 
	 Section 9.08
	 	Normal Commercial Relations	  	 	24	 
	 Section 9.09
	 	No Recourse against Others	  	 	24	 

 EXHIBITS 

					
	Exhibit A	  	-	  	Form of Certificate
	Exhibit B	  	-	  	DTC Letter of Representations
	Exhibit C	  	-	  	Amendments to Basic Agreement


  

					
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 Page 

SCHEDULES 

					
	Schedule I	  	-	  	Series AA Equipment Notes, Principal Amounts, Maturities and Aircraft
	Schedule II	  	-	  	Note Documents


  

					
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 TRUST SUPPLEMENT NO. 2017-1AA 

This TRUST SUPPLEMENT NO. 2017-1AA, dated as of November 28, 2017 (as amended from time to
time, the “Trust Supplement”), between SPIRIT AIRLINES, INC., a Delaware corporation (together with any successor in interest pursuant to Section 5.02 of the Basic Agreement, the “Company” or “Spirit”), and
WILMINGTON TRUST, NATIONAL ASSOCIATION, a national banking association, as trustee (together with any successor in interest and any successor or other trustee appointed as provided in the Basic Agreement, the “Trustee”) under the Pass
Through Trust Agreement, dated as of August 11, 2015, between the Company and Wilmington Trust, National Association (the “Basic Agreement”). 

W I T N E S S E T H: 

WHEREAS, the Basic Agreement, which is unlimited as to the aggregate face amount of Certificates that may be issued and authenticated
thereunder, has heretofore been executed and delivered; 
 WHEREAS, Spirit has obtained commitments from Airbus S.A.S. for the delivery
scheduled on or prior to October 31, 2018 of the 12 aircraft described in Schedule I (the “Aircraft”), and Spirit wishes to finance the Aircraft pursuant to the NPA; 

WHEREAS, pursuant to each Indenture, Spirit will issue on a recourse basis three series of Equipment Notes secured by the related Aircraft and
may issue one or more series of Additional Equipment Notes and one or more series of Refinancing Equipment Notes; 
 WHEREAS, the Trustee
shall hereby declare the creation of the Class AA Trust (as defined below) for the benefit of Holders of the Class AA Certificates (as defined below) to be issued in respect of such Class AA Trust, and the initial Holders of the
Class AA Certificates, as grantors of such Class AA Trust, by their respective acceptances of the Class AA Certificates, shall join in the creation of the Class AA Trust with the Trustee; 

WHEREAS, all Certificates to be issued by the Class AA Trust will evidence Fractional Undivided Interests in the Class AA Trust and
will have no rights, benefits or interests in respect of any other separate Trust or the property held therein; 
 WHEREAS, the Escrow Agent
and the Underwriters have contemporaneously herewith entered into an Escrow Agreement with the Escrow Paying Agent pursuant to which the Underwriters will deliver to the Escrow Agent the proceeds from the sale of the Class AA 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 Series AA Equipment Notes pursuant to the NPA and the applicable Participation Agreements from
time to time prior to the Delivery Period Termination Date; 
 WHEREAS, the Escrow Agent on behalf of the Class AA 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 Deposits it will withdraw funds to allow the Trustee to purchase Series AA Equipment Notes
from time to time prior to the Delivery Period Termination Date; 
 WHEREAS, pursuant to the terms and conditions of the Basic Agreement, as
supplemented by this Trust Supplement, the NPA and the Participation Agreements, the Trustee on behalf of the Class AA Trust shall from time to time purchase the Series AA Equipment Notes issued by the Company pursuant to the Indentures
relating to the Aircraft having the identical interest rate as, and final maturity dates not later than the final Regular Distribution Date of, the Class AA Certificates issued hereunder and shall hold such Series AA Equipment Notes in trust
for the benefit of the Class AA Certificateholders; 
  

  

					
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 WHEREAS, pursuant to the terms and conditions of the Intercreditor Agreement referred to in
Section 3.02(i) hereof, the Trustee and the other parties thereto will agree to the terms of subordination set forth therein; 

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, the Basic Agreement, as supplemented by this Trust Supplement, is subject to the provisions of the Trust
Indenture Act and shall, to the extent applicable, be governed by such provisions; 
 NOW, THEREFORE, in consideration of the mutual
agreements herein contained, and of other good and valuable consideration the receipt and adequacy of which are hereby acknowledged, the parties hereto agree as follows: 

ARTICLE I 
 DEFINITIONS

 Section 1.01 Definitions. Unless otherwise specified herein or the context otherwise requires, capitalized terms used but
not defined herein, including in the recitals hereto, shall have the respective meanings set forth, and shall be construed and interpreted in the manner described, in the Basic Agreement. As used herein, the term “Agreement” shall mean the
Basic Agreement, as supplemented by this Trust Supplement. For all purposes of the Basic Agreement as supplemented by this Trust Supplement, the following capitalized terms have the following meanings (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). 

Account: Has the meaning specified in the Deposit Agreement. 

Additional Certificateholder: Has the meaning specified in the Intercreditor Agreement. 

Additional Certificates: Has the meaning specified in the Intercreditor Agreement. 

Additional Equipment Notes: Has the meaning specified in the Intercreditor Agreement. 

Additional Trust: Has the meaning specified in the Intercreditor Agreement. 

Additional Trust Agreement: Has the meaning specified in the Intercreditor Agreement. 

Affiliate: Has the meaning specified in the Intercreditor Agreement. 

Agreement: Has the meaning specified in the first paragraph of Section 1.01 of this Trust Supplement. 

Aircraft: Has the meaning specified in the recitals to this Trust Supplement and any Replacement Aircraft (as defined in
the applicable Indenture) in replacement thereof in accordance with the applicable Indenture. 
 Applicable Funding
Date: Has the meaning specified in Section 7.01(b) of this Trust Supplement. 

  

					
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 Applicable Notice of Purchase Withdrawal: Has the meaning specified in the
Escrow Agreement. 
 Applicable Participation Agreement: Has the meaning specified in Section 7.01(b) of this
Trust Supplement. 
 Basic Agreement: Has the meaning specified in the preamble to this Trust Supplement. 

Business Day: Has the meaning specified in the Intercreditor Agreement. 

Certificate: Means a Class AA Certificate, a Class A Certificate or a Class B Certificate, as applicable.

 Certificate Buy-Out Event: Has the meaning specified in the Intercreditor
Agreement. 
 Certificateholder: Means, with respect to any Class of Certificates, the Person in whose name a
Certificate is registered in the Register for the Certificates of such Class. 
 Class: Has the meaning specified in
the Intercreditor Agreement. 
 Class AA Certificateholder: Means, at any time, any
Certificateholder of one or more Class AA Certificates. 
 Class AA Certificates: Has the
meaning specified in Section 3.01 of this Trust Supplement. 
 Class AA Liquidity Facility:
Has the meaning specified in the Intercreditor Agreement. 
 Class AA Liquidity Provider: Has the
meaning specified in the Intercreditor Agreement. 
 Class AA Trust: Has the meaning specified in
Section 2.01 of this Trust Supplement. 
 Class A Certificateholder: Has the meaning specified
in the Intercreditor Agreement. 
 Class A Certificates: Has the meaning specified in the
Intercreditor Agreement. 
 Class A Trust: Has the meaning specified in the Intercreditor
Agreement. 
 Class A Trust Agreement: Has the meaning specified in the Intercreditor Agreement.

 Class A Trustee: Has the meaning specified in the Intercreditor Agreement. 

Class B Certificateholder: Has the meaning specified in the Intercreditor Agreement. 

Class B Certificates: Has the meaning specified in the Intercreditor Agreement. 

Class B Trust: Has the meaning specified in the Intercreditor Agreement. 

Class B Trust Agreement: Has the meaning specified in the Intercreditor Agreement. 

Class B Trustee: Has the meaning specified in the Intercreditor Agreement. 

Code: Means the Internal Revenue Code of 1986, as amended. 

Company: Has the meaning specified in the preamble to this Trust Supplement. 

Corporate Trust Office: Has the meaning specified in the Intercreditor Agreement. 

  

					
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 Cut-off Date: Has the meaning
specified in Section 3.02(b) of this Trust Supplement. 
 Definitive Certificates: Has the meaning specified in
Section 4.01(e) of this Trust Supplement. 
 Delivery Period Termination Date: Has the meaning specified in the
NPA. 
 Deposit Agreement: Means, subject to Section 5 of the NPA, the Deposit Agreement (Class AA), dated as of
the date hereof, relating to the Class AA 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. 

Depositary: Means, subject to Section 5 of the NPA, Citibank, N.A. 

Deposits: Has the meaning specified in the Deposit Agreement. 

Distribution Date: Means a Regular Distribution Date or a Special Distribution Date. 

DTC: Has the meaning specified in Section 3.02(f) of this Trust Supplement. 

DTC Participants: Has the meaning specified in Section 4.01(b) of this Trust Supplement. 

Equipment Notes: Has the meaning specified in the Intercreditor Agreement. 

ERISA: Means the Employee Retirement Income Security Act of 1974, as amended. 

ERISA Plan: Means (i) a retirement plan or other employee benefit plan or arrangement, including for this purpose
an individual retirement account, annuity or Keogh plan, that is subject to Title I of ERISA or Section 4975 of the Code or (ii) any other entity whose underlying assets are deemed to include the assets of any plan or arrangement described
in (i) above by virtue of the U.S. Department of Labor regulation in 29 CFR §2510.3-101, as modified by Section 3(42) of ERISA (or any successor to such regulation). 

Escrow Agent: Means, initially, Wilmington Trust Company, a Delaware trust company, and any replacement or successor
therefor appointed in accordance with the Escrow Agreement. 
 Escrow Agreement: Means the Escrow and Paying Agent
Agreement (Class AA), dated as of the date hereof, relating to the Class AA Certificates, among the Escrow Agent, the Escrow Paying Agent, the Trustee and the 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 “Paying Agent” as defined in
the Escrow Agreement. 
 Escrow Period Termination Date: Has the meaning specified in Section 5.01(c)(i) of this
Trust Supplement. 
 Escrow Receipt: Means a receipt substantially in the form annexed to the Escrow Agreement
representing a fractional undivided interest in the funds held in escrow thereunder. 
 Event of Default: With respect
to any Indenture, has the meaning specified in Section 4.01 of such Indenture. 
 Event of Loss Withdrawal: Has
the meaning specified in the Escrow Agreement. 
 Final Withdrawal: Has the meaning specified in the Escrow Agreement.


  

					
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 Final Withdrawal Date: Has the meaning specified in the Escrow Agreement.

 Fractional Undivided Interests: Has the meaning specified in the Intercreditor Agreement. 

Funding Date: Has the meaning specified in the NPA. 

Funding Notice: Has the meaning specified in the NPA. 

Global Certificate: Has the meaning specified in Section 4.01(b) of this Trust Supplement. 

Holder: Means a Certificateholder. 

Indenture: Has the meaning specified in the Intercreditor Agreement. 

Indirect Participants: Has the meaning specified in Section 4.01(b) of this Trust Supplement. 

Intercreditor Agreement: Has the meaning specified in Section 3.02(j) of this Trust Supplement. 

Issuance Date: Has the meaning specified in Section 7.01(a) of this Trust Supplement. 

Junior Additional Certificateholder: Means, with respect to any Additional Certificateholder exercising its right to
purchase Certificates under Section 6.01 of this Trust Supplement, any holder of any class of Additional Certificates that rank junior, in priority of payment of “Expected Distributions” for such class under the Intercreditor
Agreement, to the class of Additional Certificates held by such Additional Certificateholder. 
 Liquidity Provider:
Has the meaning specified in the Intercreditor Agreement. 
 Loan Trustee: Means, with respect to any Indenture, the
bank, trust company or other financial institution designated as loan trustee thereunder, and any successor to such loan trustee. 

Note Documents: Means, collectively, the Participation Agreements, the Indentures, each Indenture Supplement (as defined
in any Indenture), the Airframe Warranties Agreement (as defined in any Indenture) and the Equipment Notes. 
 Notice of
Purchase Withdrawal: Has the meaning specified in the Deposit Agreement. 
 NPA: Means the Note Purchase
Agreement, dated as of the date hereof, among the Trustee, the Class A Trustee, the Class B Trustee, the Company, the Escrow Agent, the Escrow Paying Agent and the Subordination Agent, providing for, among other things, the purchase of
Series AA Equipment Notes by the Trustee on behalf of the Class AA Trust, as the same may be amended, supplemented or otherwise modified from time to time, in accordance with its terms. 

Operative Agreements: Has the meaning specified in the Intercreditor Agreement. 

Other Agreements: Means (i) the Class A Trust Agreement, (ii) the Class B Trust Agreement,
(iii) any Additional Trust Agreement and (iv) any Refinancing Trust Agreement. 
 Other Trustees: Means the
trustees under the Other Agreements, and any successor or other trustee appointed as provided therein. 

  

					
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 Other Trusts: Means the Class A Trust, the Class B Trust, any
Additional Trust or Trusts, or any Refinancing Trust or Trusts, in each case created by the applicable Other Agreement. 

Participation Agreement: Has the meaning specified in the Intercreditor Agreement. 

Paying Agent: Means, with respect to the Class AA Certificates, the paying agent maintained and appointed for such
Class AA Certificates pursuant to Section 7.12 of the Basic Agreement. 
 Person: Means any individual,
corporation, limited liability company, partnership, joint venture, association, joint-stock company, trust, trustee, unincorporated organization or government or any agency or political subdivision thereof. 

Plan: Means (i) an ERISA Plan or (ii) such a plan or arrangement which is a foreign, church or governmental
plan or arrangement exempt from Title I of ERISA and Section 4975 of the Code but subject to a Similar Law. 
 Pool
Balance: Means, as of any date, (i) the original aggregate face amount of the Class AA Certificates less (ii) the aggregate amount of all distributions made as of such date in respect of the Class AA Certificates or in
respect of Deposits other than distributions made in respect of interest or Premium or reimbursement of any costs or expenses incurred in connection therewith. The Pool Balance as of any date shall be computed after giving effect to any distribution
with respect to unused Deposits, the payment of principal, if any, of the Series AA Equipment Notes or payment with respect to other Trust Property and the distribution thereof to be made on such date. 

Pool Factor: Means, as of any Distribution Date, the quotient (rounded to the seventh decimal place) computed by
dividing (i) the Pool Balance by (ii) the original aggregate face amount of the Class AA Certificates. The Pool Factor as of any Distribution Date shall be computed after giving effect to any distribution with respect to unused
Deposits, payment of principal, if any, of the Series AA Equipment Notes or payment with respect to other Trust Property and the distribution thereof to be made on that date. 

Premium: Has the meaning specified in the Intercreditor Agreement. 

Prospectus Supplement: Means the final prospectus supplement, dated November 13, 2017, relating to the offering of
the Certificates. 
 Rating Agencies: Has the meaning specified in the Intercreditor Agreement. 

Refinancing Certificateholder: Has the meaning specified in the Intercreditor Agreement. 

Refinancing Certificates: Has the meaning specified in the Intercreditor Agreement. 

Refinancing Equipment Notes: Has the meaning specified in the Intercreditor Agreement. 

Refinancing Trust: Has the meaning specified in the Intercreditor Agreement. 

Refinancing Trust Agreement: Has the meaning specified in the Intercreditor Agreement. 

Regular Distribution Date: Has the meaning specified in Section 3.02(c) of this Trust Supplement. 

  

					
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 Replacement Deposit Agreement: Has the meaning specified in the NPA. 

Replacement Depositary: Has the meaning specified in the NPA. 

Replacement Liquidity Facility: Has the meaning specified in the Intercreditor Agreement. 

Replacement Liquidity Provider: Has the meaning specified in the Intercreditor Agreement. 

Responsible Officer: Has the meaning specified in the Intercreditor Agreement. 

Scheduled Payment: Has the meaning specified in the Intercreditor Agreement. 

Securities Act: Means the Securities Act of 1933, as amended. 

Series AA Equipment Notes: Has the meaning specified in the Intercreditor Agreement. 

Similar Law: Means a foreign, federal, state, or local law which is substantially similar to the prohibited transaction
provisions of Title I of ERISA or Section 4975 of the Code. 
 Special Distribution Date: Means, with respect to
the Class AA Certificates, each date on which a Special Payment is to be distributed as specified in this Agreement. 

Special Payment: Means any payment (other than a Scheduled Payment) in respect of, or any proceeds of, any Equipment
Note or the Collateral (as defined in any Indenture). 
 Special Payments Account: Means, with respect to the
Class AA Certificates, the account or accounts created and maintained for such series pursuant to Section 4.01(b) of the Basic Agreement (as modified by Section 7.01(c) of this Trust Supplement) and this Trust Supplement. 

Spirit: Has the meaning specified in the preamble to this Trust Supplement. 

Subordination Agent: Has the meaning specified in the Intercreditor Agreement. 

Triggering Event: Has the meaning specified in the Intercreditor Agreement. 

Trust: Means the Class AA Trust, the Class A Trust or the Class B Trust, as applicable. 

Trust Indenture Act: Means the Trust Indenture Act of 1939, as amended. 

Trust Property: Means (i) subject to the Intercreditor Agreement, the Series AA Equipment Notes held as the
property of the Class AA Trust, 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 Notes and (iii) all rights of the Class AA Trust and the Trustee, on behalf of the Class AA Trust,
under the Intercreditor Agreement, the Escrow Agreement, the NPA and the Class AA Liquidity Facility, including, without limitation, all rights to receive certain payments thereunder, and all monies paid to the Trustee on behalf of the
Class AA Trust pursuant to the Intercreditor Agreement or the Class AA 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 Series AA Equipment Notes to be held herein, will not constitute Trust Property. 

  

					
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 Trust Supplement: Has the meaning specified in the preamble hereto. 

Trustee: Has the meaning specified in the preamble to this Trust Supplement. 

Underwriters: Means Citigroup Global Markets, Inc., Morgan Stanley & Co. LLC, Goldman Sachs & Co. LLC
and Barclays Capital Inc. 
 Underwriting Agreement: Means the Underwriting Agreement, dated November 13, 2017,
among the Underwriters and the Company, as the same may be amended, supplemented or otherwise modified from time to time in accordance with its terms. 

Withdrawal Certificate: Has the meaning specified in the Escrow Agreement. 

ARTICLE II 
 DECLARATION
OF TRUST 
 Section 2.01 Declaration of Trust. The Trustee hereby declares the creation of a Trust, designated the
“Spirit Airlines Pass Through Trust 2017-1AA” (the “Class AA Trust”), for the benefit of the Holders of the Class AA Certificates to be issued in respect of such Class AA
Trust, and the initial Holders of the Class AA Certificates, as grantors of such Class AA Trust, by their respective acceptances of the Class AA Certificates, join in the creation of such Class AA Trust with the Trustee. The
Trustee, by the execution and delivery of this Trust Supplement, acknowledges its acceptance of all right, title and interest in and to the Trust Property to be acquired pursuant to Section 7.01(b) of this Trust Supplement, the NPA and the
Participation Agreements and the Trustee will hold such right, title and interest for the benefit of all present and future Holders of the Class AA Certificates, upon the trusts set forth in the Basic Agreement and this Trust Supplement. The
provisions of this Section 2.01 supersede and replace the provisions of Sections 2.03 of the Basic Agreement, with respect to the Class AA Trust. 

Section 2.02 Permitted Activities. The Class AA Trust may only engage in the transactions contemplated by the Operative
Agreements, subject to Section 9.05 of this Trust Supplement. 
 ARTICLE III 

THE CERTIFICATES 

Section 3.01 The Certificates. There is hereby created a series of Certificates to be issued under this Agreement designated as
“Spirit Airlines Pass Through Certificates, Series 2017-1AA” (the “Class AA Certificates”). Each Class AA Certificate represents a Fractional Undivided Interest in the
Class AA Trust created hereby. The Class AA Certificates shall be the only instruments evidencing a Fractional Undivided Interest in the Class AA Trust. The Class AA Certificates do not represent indebtedness of the Class AA
Trust, and references herein to interest accruing on the Class AA Certificates are included for purposes of computation only. 

Section 3.02 Terms and Conditions. The terms and conditions applicable to the Class AA Certificates and the Class AA
Trust are as follows: 
 (a) The aggregate face amount of the Class AA Certificates that may be authenticated and delivered under this
Agreement (except for Class AA Certificates authenticated and delivered upon registration of transfer of, or in exchange for, or in lieu of, other Class AA Certificates pursuant to Sections 3.03, 3.04, 3.05 and 3.06 of the Basic
Agreement and Section 4.03 of this Trust Supplement) is $247,099,000. 

  

					
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 (b) The “Cut-off Date” is the earlier of
(i) the day after the Delivery Period Termination Date, and (ii) the date on which a Triggering Event occurs. 
 (c) The
distribution dates with respect to any payment of Scheduled Payments (each such distribution date, a “Regular Distribution Date”) shall be February 15 and August 15 of each year, commencing on August 15, 2018, until payment
of all of the Scheduled Payments to be made under the Equipment Notes has been made; provided, however, that, if any such day shall not be a Business Day, the related distribution shall be made on the next succeeding Business Day
without additional interest. The principal amount of the Series AA Equipment Notes to be held by the Class AA Trust is scheduled for payment on February 15 and August 15 in certain years, commencing on August 15, 2018 and ending
on the applicable date specified under the heading “Maturity” on Schedule I with respect to the related Aircraft, as set out in Schedule III to the NPA. 

(d) The Special Distribution Date with respect to the Class AA Certificates means any Business Day on which a Special Payment is to be
distributed pursuant to this Agreement. 
 (e) At the Escrow Agent’s request under the Escrow Agreement, the Trustee shall affix the
corresponding Escrow Receipt to each Class AA Certificate. In any event, any transfer or exchange of any Class AA 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 Class AA Certificate shall be permitted unless the corresponding Escrow Receipt is attached thereto and also is so transferred or exchanged. By acceptance of any Class AA Certificate to which an Escrow Receipt
is attached, each holder of such a Class AA Certificate acknowledges and accepts the restrictions on transfer of the Escrow Receipt as set forth herein, in such Escrow Receipt, and in the Escrow Agreement. 

(f) The Class AA Certificates shall be in the form attached hereto as Exhibit A, shall be Book-Entry Certificates (subject to
Section 3.05(d) of the Basic Agreement and Section 4.03 of this Trust Supplement), and shall be subject to the conditions set forth in the Letter of Representations between the Class AA Trust and The Depository Trust Company and any
successor agency thereto (“DTC”), as initial Clearing Agency, attached hereto as Exhibit B. 
 (g) The proceeds of the offering of
Class AA Certificates issued by the Class AA Trust and related Escrow Receipts shall be deposited in the Accounts and shall be used in accordance with the Escrow Agreement, the Deposit Agreement and the NPA to acquire from time to time the
Series AA Equipment Notes described in Schedule I that relate to the Aircraft and to the Note Documents described in Schedule II. 
 (h)
Any Person acquiring or accepting a Class AA Certificate or an interest therein will, by such acquisition or acceptance, be deemed to (i) represent and warrant to the Company, the Loan Trustees and the Trustee that either (1) no
assets of a Plan or any trust established with respect to a Plan have been used to purchase or hold Class AA Certificates or an interest therein or (2) the purchase and holding of Class AA Certificates or interests therein by such
Person are exempt from the prohibited transaction restrictions of ERISA and the Code or provisions of Similar Law pursuant to one or more prohibited transaction statutory or administrative exemptions or similar exemptions under Similar Law and
(ii) direct the Trustee to invest the assets held in the Trust pursuant to, and take all other actions contemplated by, the terms and conditions of the Basic Agreement, this Trust Supplement, the Intercreditor Agreement, the Deposit Agreement,
the Escrow Agreement, the NPA, and each Participation Agreement. 
 (i) Any Person who is an ERISA Plan and is acquiring or accepting a
Class AA Certificate or an interest therein will, by such acquisition or acceptance, be deemed to represent and warrant to the Company, the Loan Trustees and the Trustee that the decision to acquire or accept the Class AA Certificate or
interest therein has been made by a duly authorized fiduciary of the ERISA Plan 

  

					
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that (i) is independent (as that term is used in 29 C.F.R. 2510.3-21(c)(1)) of the Company and its Affiliates and there is no financial
interest, ownership interest, or other relationship, agreement or understanding or otherwise that would limit its ability to carry out its fiduciary responsibility to the ERISA Plan; (ii) is a bank, insurance carrier, registered
investment adviser, a registered broker-dealer, or an independent fiduciary that holds, or has under management or control, total assets of at least $50 million (in each case, as specified in 29 C.F.R.
2510.3-21(c)(1)(i)(A)-(E)); (iii) is capable of evaluating investment risks independently, both in general and with regard to particular transactions and investment strategies (including, without
limitation, with respect to the decision to acquire or accept the Class AA Certificate or interest therein); (iv) has been fairly informed that the Company and its Affiliates have not and will not undertake to provide impartial
investment advice, or to give advice in a fiduciary capacity, in connection with the acquisition or acceptance of the Class AA Certificate or interest therein; (v) has been fairly informed that the Company and its Affiliates have
financial interests in the ERISA Plan’s acquisition or acceptance of the Class AA Certificate or interest therein, which interests may conflict with the interest of the ERISA Plan, as more fully described in the offering materials;
(vi) is a fiduciary under ERISA or the Code, or both, with respect to the decision to acquire or accept the Class AA Certificate or interest therein and is responsible for exercising (and has exercised) independent judgment in
evaluating whether to invest the assets of the ERISA Plan in the Class AA Certificate or interest therein; and (vii) is not paying the Company or any of its Affiliates, any fee or other compensation directly for the provision of
investment advice (as opposed to other services) in connection with the ERISA Plan’s acquisition or acceptance of the Class AA Certificate or interest therein. 

(j) The Class AA Certificates will be subject to the following Intercreditor Agreement (and to the extent the terms thereof (including the
definitions of defined terms) are inconsistent with the terms of this Agreement, such Intercreditor Agreement shall control): that certain Intercreditor Agreement, dated as of the date hereof, among Wilmington Trust, National Association, as
Trustee, as Class A Trustee and as Class B Trustee, Commonwealth Bank of Australia, New York Branch, as each Liquidity Provider, and Wilmington Trust, National Association, as Subordination Agent thereunder (as may be amended, supplemented
or otherwise modified from time to time in accordance with its terms, the “Intercreditor Agreement”). Under Article VI hereof, the Holders of the Class A Certificates, the Class B Certificates, Additional Certificates (if issued)
or Refinancing Certificates (if issued) shall have the rights upon the occurrence of a Certificate Buy-Out Event set forth therein. The Trustee and, by acceptance of any Class AA Certificate, each
Certificateholder thereof, agrees to be bound by all of the provisions of the Intercreditor Agreement, including the subordination provisions of Section 9.09 thereof. 

(k) The Class AA Certificates have the benefit of the Deposit Agreement and the Escrow Agreement. 

(l) The Class AA Certificates will have the benefit of the following liquidity facility: that certain Revolving Credit Agreement (2017-1AA), dated as of the date hereof, between Wilmington Trust, National Association, as Subordination Agent under the Intercreditor Agreement, as agent and trustee for the Class AA Trust, and the
Class AA Liquidity Provider. 
 (m) The Responsible Party is the Company. 

(n) The Company, any other obligor upon the Class AA Certificates, and any Affiliate of any thereof may acquire, tender for, purchase,
own, hold, become the pledgee of and otherwise deal with any Class AA Certificate. 
 (o) The “particular sections of the Note
Purchase Agreement”, for purposes of clause (3) of Section 7.07 of the Basic Agreement, are Section 4.02 of each Participation Agreement. 

  

					
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 ARTICLE IV 

ISSUANCE AND TRANSFER OF THE CLASS AA CERTIFICATES 

Section 4.01 Issuance of Class AA Certificates. (a) The Class AA Certificates will be issued in
minimum denominations of $2,000 (or such other denomination that is the lowest integral multiple of $1,000 that is, at the time of issuance, equal to at least 1,000 euros) and integral multiples of $1,000 in excess thereof, except that one
Certificate may be issued in a different denomination. Each Class AA Certificate shall be dated the date of its authentication. 
 (b)
The Class AA Certificates shall be issued initially in the form of one or more global Certificates in definitive, fully registered form without interest coupons, substantially in the form of Exhibit A hereto (each, a “Global
Certificate”), duly executed and authenticated by the Trustee as hereinafter provided. Each Global Certificate will be registered in the name of a nominee for DTC for credit to the account of members of, or participants in, DTC (“DTC
Participants”) or to the account of indirect participants that clear through or maintain a custodial relationship with a DTC Participant, either directly or indirectly (“Indirect Participants”), and will be deposited with the Trustee,
as custodian for DTC. The aggregate face amount of a Global Certificate may from time to time be decreased by adjustments made on the records of DTC or its nominee, or of the Trustee, as custodian for DTC or its nominee, as hereinafter provided,
which adjustments shall be conclusive as to the aggregate face amount of any such Global Certificate. 
 (c) [Reserved] 

(d) [Reserved] 
 (e) Certificated
Certificates in registered form shall be issued in substantially the form set forth as Exhibit A hereto (the “Definitive Certificates”) and shall be in fully registered form and shall be typed, printed, lithographed or engraved or produced
by any combination of these methods or may be produced in any other manner, all as determined by the officers executing such Definitive Certificates, as evidenced by their execution of such Definitive Certificates. 

Section 4.02 Legends. (a) Each Global Certificate shall bear the following legend on the face thereof: 

UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION (“DTC”),
TO THE TRUSTEE OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IN EXCHANGE FOR THIS CERTIFICATE 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 HEREON 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 AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN. 
 (b) Each Class AA Certificate shall
bear the following legend on the face thereof: 
 BY ITS ACQUISITION HEREOF, THE HOLDER REPRESENTS THAT EITHER (A) NO ASSETS OF A PLAN
OR ANY TRUST ESTABLISHED WITH RESPECT TO A PLAN HAVE BEEN USED TO PURCHASE OR HOLD THIS CERTIFICATE OR 

  

					
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AN INTEREST HEREIN OR (B) THE PURCHASE AND HOLDING OF THIS CERTIFICATE OR INTEREST HEREIN BY SUCH A PERSON ARE EXEMPT FROM THE PROHIBITED TRANSACTION RESTRICTIONS OF ERISA AND THE CODE OR
PROVISIONS OF SIMILAR LAW PURSUANT TO ONE OR MORE PROHIBITED TRANSACTION STATUTORY OR ADMINISTRATIVE EXEMPTIONS OR SIMILAR EXEMPTIONS UNDER SIMILAR LAW. 

FURTHER, BY ITS ACQUISITION HEREOF, A HOLDER WHO IS AN ERISA PLAN REPRESENTS THAT THE DECISION TO ACQUIRE OR ACCEPT THIS CERTIFICATE OR
INTEREST HEREIN HAS BEEN MADE BY A DULY AUTHORITZED FIDUCIARY OF THE ERISA PLAN THAT (A) IS INDEPENDENT (AS THAT TERM IS USED IN 29 C.F.R. 2510-3-21(c)(1)) OF THE
COMPANY AND ITS AFFILIATES AND THERE IS NO FINANCIAL INTEREST, OWNERSHIP INTEREST, OR OTHER RELATIONSHIP, AGREEMENT OR UNDERSTANDING OR OTHERWISE THAT WOULD LIMIT ITS ABILITY TO CARRY OUT ITS FIDUCIARY RESPONSIBILITY TO THE ERISA PLAN; (B) IS A
BANK, INSURANCE CARRIER, REGISTERED INVESTMENT ADVISER, A REGISTERED BROKER-DEALER, OR AN INDEPENDENT FIDUCIARY THAT HOLDS, OR HAS UNDER MANAGEMENT OR CONTROL, TOTAL ASSETS OF AT LEAST $50 MILLION (IN EACH CASE, AS SPECIFIED IN 29 C.F.R. 2510.3-21(c)(1)(i)(A)-(E)); (C) IS CAPABLE OF EVALUATING INVESTMENT RISKS INDEPENDENTLY, BOTH IN GENERAL AND WITH REGARD TO PARTICULAR TRANSACTIONS AND INVESTMENT STRATEGIES (INCLUDING, WITHOUT LIMITATION, WITH
RESPECT TO THE DECISION TO ACQUIRE OR ACCEPT THIS CERTIFICATE OR INTEREST HEREIN); (D) HAS BEEN FAIRLY INFORMED THAT THE COMPANY AND ITS AFFILIATES HAVE NOT AND WILL NOT UNDERTAKE TO PROVIDE IMPARTIAL INVESTMENT ADVICE, OR TO GIVE ADVICE IN A
FIDUCIARY CAPACITY, IN CONNECTION WITH THE ACQUISITION OR ACCEPTANCE OF THIS CERTIFICATE OR INTEREST HEREIN; (E) HAS BEEN FAIRLY INFORMED THAT THE COMPANY AND ITS AFFILIATES HAVE FINANCIAL INTERESTS IN THE ERISA PLAN’S ACQUISITION OR
ACCEPTANCE OF THIS CERTIFICATE OR INTEREST HEREIN, WHICH INTERESTS MAY CONFLICT WITH THE INTEREST OF THE ERISA PLAN, AS MORE FULLY DESCRIBED IN THE OFFERING MATERIALS; (F) IS A FIDUCIARY UNDER ERISA OR THE CODE, OR BOTH, WITH RESPECT TO THE
DECISION TO ACQUIRE OR ACCEPT THIS CERTIFICATE OR INTEREST HEREIN AND IS RESPONSIBLE FOR EXERCISING (AND HAS EXERCISED) INDEPENDENT JUDGMENT IN EVALUATING WHETHER TO INVEST THE ASSETS OF THE ERISA PLAN IN THIS CERTIFICATE OR INTEREST HEREIN; AND
(G) IS NOT PAYING FOR THE COMPANY OR ANY OF ITS AFFILIATES, ANY FEE OR OTHER COMPENSATION DIRECTLY FOR THE PROVISION OF INVESTMENT ADVICE (AS OPPOSED TO OTHER SERVICES) IN CONNECTION WITH THE ERISA PLAN’S ACQUISITION OR ACCEPTANCE OF THIS
CERTIFICATE OR INTEREST HEREIN. 
 CERTAIN TERMS USED IN THE FOREGOING PARAGRAPHS SHALL HAVE THE MEANINGS SPECIFIED IN THE AGREEMENT. 

Section 4.03 Book-Entry Provisions for Global Certificates. (a) DTC Participants shall have no rights under this Agreement
with respect to any Global Certificate held on their behalf by DTC, or the Trustee as its custodian, and DTC may be treated by the Trustee and any agent of the Trustee as the absolute owner of such Global Certificate for all purposes whatsoever.
Notwithstanding the 

  

					
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	foregoing, nothing herein shall prevent the Trustee or any agent of the Trustee from giving effect to any written certification, proxy or other authorization furnished by DTC or shall impair, as between DTC and its DTC
Participants, the operation of customary practices governing the exercise of the rights of a holder of any Class AA Certificate. Upon the issuance of any Global Certificate, the Registrar or its duly appointed agent shall record Cede &
Co. or another nominee of DTC as the registered holder of such Global Certificate.

 (b) Transfers of any Global Certificate shall be limited to transfers of such Global Certificate in whole, but
not in part, to nominees of DTC, its successor or such successor’s nominees. Beneficial interests in Global Certificates may be transferred in accordance with the rules and procedures of DTC and the provisions of Section 4.02 of this Trust
Supplement. Beneficial interests in Global Certificates shall be delivered to all beneficial owners thereof in the form of Definitive Certificates, if (i) DTC notifies the Trustee in writing that it is no longer willing or able to discharge
properly its responsibilities as depositary for the Global Certificates, and a successor depositary is not appointed by the Trustee within 90 days of such notice, (ii) the Company, at its option, advises the Trustee in writing that it
elects to terminate the book-entry system through DTC or (iii) after the occurrence and during the continuance of an Event of Default, Class AA Certificateholders with Fractional Undivided Interests aggregating not less than a majority in
interest in the Class AA Trust advise the Trustee, the Company and DTC through DTC Participants in writing that the continuation of a book-entry system through DTC (or a successor thereto) is no longer in the Class AA
Certificateholders’ best interests. Neither the Company nor the Trustee shall be liable if the Company or the Trustee is unable to locate a qualified successor clearing system. 

(c) [Reserved] 
 (d) In connection
with the transfer of the entire amount of a Global Certificate to the beneficial owners thereof pursuant to paragraph (b) of this Section 4.03, such Global Certificate shall be deemed to be surrendered to the Trustee for cancellation, and
the Trustee shall execute, authenticate and deliver to each beneficial owner, in exchange for the beneficial interest thereof in such Global Certificate, an equal aggregate face amount of Definitive Certificates of authorized denominations, in each
case as such beneficial owner and related aggregate face amount shall have been identified and otherwise set forth (together with such other information as may be required for the registration of such Definitive Certificates) in registration
instructions that shall have been delivered by or on behalf of DTC to the Trustee. None of the Company, the Registrar, the Paying Agent nor the Trustee shall be liable for any delay in delivery of such registration instructions and each such Person
may conclusively rely on, and shall be protected in relying on, such registration instructions. Upon the issuance of any Definitive Certificate, the Trustee shall recognize the Person in whose name such Definitive Certificate is registered in the
Register as a Certificateholder hereunder. 
 (e) The registered Holder of a Global Certificate may grant proxies and otherwise authorize any
Person, including DTC Participants and Persons that may hold interests through DTC Participants, to take any action which a Holder is entitled to take under this Agreement or the Class AA Certificates. 

(f) Neither the Company, nor the Trustee, nor the Registrar, nor the Paying Agent shall have any responsibility or liability for: (i) any
aspect of the records relating to or payments made on account of beneficial ownership interests in the Global Certificates, (ii) maintaining, supervising or reviewing any records relating to such beneficial ownership interests or (iii) the
performance by DTC, any DTC Participant or any Indirect Participant of their respective obligations under the rules, regulations and procedures creating and affecting DTC and its operation or any other statutory, regulatory, contractual or customary
procedures governing their obligations. 

  

					
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 ARTICLE V 

DISTRIBUTION; STATEMENTS TO CERTIFICATEHOLDERS 

Section 5.01 Statements to Certificateholders. (a) On each Regular Distribution Date and Special Distribution Date, the
Trustee will include with each distribution to the Class AA Certificateholders a statement, giving effect to the distribution to be made on such Regular Distribution Date or Special Distribution Date, setting forth the following information
(per $1,000 aggregate face amount of Class AA Certificates as to clauses (ii), (iii), (iv) and (v) below): 

(i) the aggregate amount of funds distributed on such Distribution Date under this Agreement and the Escrow Agreement,
indicating the amount, if any, allocable to each source (including any portion thereof paid by the Class AA Liquidity Provider); 

(ii) the amount of such distribution under this Agreement allocable to principal and the amount allocable to Premium (if any);

 (iii) the amount of such distribution under this Agreement allocable to interest (including any portion thereof paid by
the Class AA Liquidity Provider); 
 (iv) the amount of such distribution under the Escrow Agreement allocable to
interest, if any; 
 (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 Class AA Certificates registered in the name of DTC or its nominee, on the Record Date prior to each Regular
Distribution Date and Special Distribution Date, the Trustee will request that DTC post on its Internet bulletin board a securities position listing setting forth the names of all the DTC Participants reflected on DTC’s books as holding
interests in the Class AA Certificates on such Record Date. On each Regular Distribution Date and Special Distribution Date, the Trustee will mail to each such DTC Participant whose name has been provided by DTC the statement described above
and will make available additional copies as requested by such DTC Participants for forwarding to holders of interests in the Class AA 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 a Class AA 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 a Class AA Certificateholder of record during a portion of such calendar year, for the applicable portion of such year, and such other items as are readily available to the Trustee
and which a Class AA Certificateholder may reasonably request as necessary for the purpose of such Certificateholder’s preparation of its United States federal income tax returns or foreign income tax returns. With respect to Class AA
Certificates registered in the name of DTC or its nominee, such statement and such other items shall be prepared on the basis of information supplied to the Trustee by the DTC Participants and shall be delivered by the Trustee to such DTC
Participants to be available for forwarding by such DTC Participants to the holders of beneficial interests in the Class AA Certificates. 

(c) Promptly following: 

(i) the Delivery Period Termination Date, or, if later, the date of any Final Withdrawal (the later of such dates, the
“Escrow Period Termination Date”), if there has been, on 

  

					
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or prior to the Escrow Period Termination Date, (A) any change in the information set forth in clauses (y) and (z) below from that set forth on page
S-54 of the Prospectus Supplement, or (B) any early redemption or purchase of, or any default in the payment of principal or interest in respect of, any of the Series AA Equipment Notes held in the
Class AA Trust, any Event of Loss Withdrawal or any Final Withdrawal, and 
 (ii) the date of any early redemption or
purchase of, or any default in the payment of principal or interest in respect of, any of the Series AA Equipment Notes held in the Class AA Trust, in either case described in this clause (ii), occurring after the Escrow Period Termination
Date, 
 the Trustee shall furnish to Class AA Certificateholders of record on such date a statement setting forth (x) the
expected Pool Balances for each subsequent Regular Distribution Date following the Delivery Period Termination Date or the date of such early redemption, purchase or default, (y) the related Pool Factors for such Regular Distribution Dates and
(z) the expected principal distribution schedule of the Series AA Equipment Notes, in the aggregate, held as Trust Property at the date of such notice. With respect to the Class AA Certificates registered in the name of DTC, on the
Delivery Period Termination Date or the date of such early redemption, purchase or default, the Trustee will request from DTC a securities position listing setting forth the names of all DTC Participants reflected on DTC’s books as holding
interests in the Class AA Certificates on such date. The Trustee will mail (or in the case of Global Certificates, send electronically in accordance with DTC’s applicable procedures) to each such DTC Participant the statement described
above and will make available additional copies as requested by such DTC Participant for forwarding to holders of interests in the Class AA Certificates. 

(d) If the aggregate principal payments scheduled for a Regular Distribution Date prior to the Delivery Period Termination Date differ from the
amount thereof set forth for the Class AA Certificates on page S-54 of the Prospectus Supplement, by no later than the 15th day prior to such Regular Distribution Date, the Trustee shall mail (or in the case of Global Certificates, send
electronically in accordance with DTC’s applicable procedures) written notice of the actual amount of such scheduled payments to the Class AA Certificateholders of record as of a date within 15 Business Days prior to the date of mailing or
sending, as applicable. 
 (e) The provisions of this Section 5.01 supersede and replace the provisions of Section 4.03 of the
Basic Agreement in their entirety with respect to the Class AA Trust. 
 ARTICLE VI 

DEFAULT 

Section 6.01 Purchase Rights of Certificateholders. (a) By acceptance of its Class AA Certificate, each Class AA
Certificateholder agrees that at any time after the occurrence and during the continuation of a Certificate Buy-Out Event: 

(i) so long as no Class B Certificateholder or Additional Certificateholder has elected to exercise its rights to purchase
the Class AA Certificates and the Class A Certificates pursuant to, and given notice of such election in accordance with, this Section 6.01(a) (upon such election and notification thereof, the right specified in this
Section 6.01(a)(i) shall be suspended and (x) upon consummation of the purchase pursuant to such election, be terminated with respect to such Certificate Buy-Out Event, or (y) upon failure to
consummate such purchase on the proposed purchase date, such right shall be revived), each Class A Certificateholder (other than the Company or any of its Affiliates) shall have the right to purchase, at the purchase price set forth herein,
all, but not less than all, of the Class AA Certificates upon ten days’ prior written irrevocable notice to the Trustee, the Class A Trustee and each other Class A Certificateholder,


  

					
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on the third Business Day following the expiration of such ten-day notice period, provided that (A) if prior to the end of such ten-day period any other Class A Certificateholder(s) (other than the Company or any of its Affiliates) notifies such purchasing Class A Certificateholder that such other Class A Certificateholder(s)
want(s) to participate in such purchase, then such other Class A Certificateholder(s) (other than the Company or any of its Affiliates) may join with the purchasing Class A Certificateholder to purchase all, but not less than all, of the
Class AA Certificates pro rata based on the Fractional Undivided Interest in the Class A Trust held by each such Class A Certificateholder and (B) upon consummation of such purchase no Class A Certificateholder shall have a
right to purchase the Class AA Certificates pursuant to this Section 6.01(a)(i) during the continuance of such Certificate Buy-Out Event, 

(ii) so long as no Additional Certificateholder has elected to exercise its rights to purchase Certificates pursuant to, and
given notice of such election in accordance with, this Section 6.01(a) (upon such election and notification thereof, the right specified in this Section 6.01(a)(ii) shall be suspended and (x) upon consummation of the purchase pursuant
to such election, be terminated with respect to such Certificate Buy-Out Event, or (y) upon failure to consummate such purchase on the proposed purchase date, such right shall be revived), each
Class B Certificateholder (other than the Company or any of its Affiliates) shall have the right to purchase, at the purchase price set forth herein and in the Class A Trust Agreement, respectively, all, but not less than all, of the
Class AA Certificates and the Class A Certificates upon ten days’ prior written irrevocable notice to the Trustee, the Class A Trustee, the Class B Trustee and each other Class B Certificateholder, on the third Business
Day following the expiration of such ten-day notice period, provided that (A) if prior to the end of such ten-day period any other Class B
Certificateholder(s) (other than the Company or any of its Affiliates) notifies such purchasing Class B Certificateholder that such other Class B Certificateholder(s) want(s) to participate in such purchase, then such other Class B
Certificateholder(s) (other than the Company or any of its Affiliates) may join with the purchasing Class B Certificateholder to purchase all, but not less than all, of the Class AA Certificates and the Class A Certificates pro rata
based on the Fractional Undivided Interest in the Class B Trust held by each such Class B Certificateholder and (B) upon consummation of such purchase no Class B Certificateholder shall have a right to purchase the Class AA
Certificates and the Class A Certificates pursuant to this Section 6.01(a)(ii) during the continuance of such Certificate Buy-Out Event, 

(iii) if any Additional Certificates are issued by an Additional Trust, so long as no Junior Additional Certificateholder (if
any) has elected to exercise its rights to purchase Certificates pursuant to, and given notice of such election in accordance with, this Section 6.01(a) (upon such election and notification thereof, the right specified in this
Section 6.01(a)(iii) shall be suspended and (x) upon consummation of the purchase pursuant to such election, be terminated with respect to such Certificate Buy-Out Event, or (y) upon failure to
consummate such purchase on the proposed purchase date, such right shall be revived), 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 AA Certificates or the Class AA Certificates and Class A Certificates pursuant to clause (i) or (ii) above, respectively) to purchase all, but not less than all, of the Class AA Certificates, the Class A
Certificates, the Class B Certificates and any Additional Certificates ranked senior, in priority of payment of “Expected Distributions” therefor under the Intercreditor Agreement, to the Additional Certificates held by the purchasing
Additional Certificateholder upon ten days’ prior written irrevocable notice to the Trustee, the Class A Trustee, the Class B Trustee, the trustee of any Additional Trust with respect to any Additional Certificates that rank senior,
in priority of payment of “Expected Distributions” therefor under the Intercreditor Agreement, to the Additional Certificates held by the purchasing Additional Certificateholder and each other Additional Certificateholder of the same
class, on the third Business Day following the 

  

					
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expiration of such ten-day notice period, provided that (A) if prior to the end of such ten-day period
any other Additional Certificateholder(s) of such class (other than the Company or any of its Affiliates) notifies such purchasing Additional Certificateholder that such other Additional Certificateholder(s) want(s) to participate in such purchase,
then such other Additional Certificateholder(s) (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 Class AA Certificates, the Class A
Certificates, the Class B Certificates and such senior Additional Certificates pro rata based on the Fractional Undivided Interest in the applicable Additional Trust held by each such Additional Certificateholder and (B) upon consummation
of such purchase no Additional Certificateholder of such class shall have a right to purchase the Class AA Certificates, the Class A Certificates, the Class B Certificates and such senior Additional Certificates pursuant to this
Section 6.01(a)(iii) during the continuance of such Certificate Buy-Out Event, and 

(iv) 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 this Section 6.01(a) (and to receive notice in connection therewith) as the Holders of the Class that such Refinancing Certificates refinanced. 

The purchase price with respect to the Class AA Certificates shall be equal to the Pool Balance of the Class AA Certificates,
together with accrued and unpaid interest in respect thereof to the date of such purchase, and any other amounts then due and payable to the Class AA Certificateholders under this Agreement, the Intercreditor Agreement, the Escrow Agreement,
any Series AA Equipment Note held as the property of the Class AA Trust or the related Indenture and Participation Agreement or on or in respect of the Class AA Certificates but without any Premium, provided, however, that if
such purchase occurs after (x) a record date specified in Section 2.03 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
under the Escrow Agreement, such purchase price shall be reduced by the aggregate amount of unused Deposits and/or interest to be distributed under the Escrow Agreement (which deducted amounts shall remain distributable to, and may be retained by,
the Class AA Certificateholders as of such record date) or (y) the Record Date relating to any Distribution Date, such purchase price shall be reduced by the amount to be distributed hereunder on such related Distribution Date (which
deducted amounts shall remain distributable to, and may be retained by, the Class AA Certificateholders as of such Record Date); provided further that no such purchase of Class AA Certificates pursuant to this
Section 6.01(a) shall be effective unless the purchaser(s) shall certify to the Trustee that contemporaneously with such purchase, such purchaser(s) is purchasing, pursuant to the terms of this Agreement, the Class A Trust Agreement, the
Class B Trust Agreement, the applicable Additional Trust Agreement (if any) or the applicable Refinancing Trust Agreement (as the case may be), and the Intercreditor Agreement, all of the Class AA Certificates, the Class A
Certificates, the Class B Certificates and, if applicable, the Additional Certificates that rank senior, in priority of payment of “Expected Distributions” therefor under the Intercreditor Agreement, to the Additional Certificates
held by the purchasing Additional Certificateholder(s) and, if applicable, the Refinancing Certificates that are senior to the securities held by such purchaser(s). Each payment of the purchase price of the Class AA Certificates referred to in
the first sentence of this paragraph 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 6.01(a). Each Class AA Certificateholder agrees by its acceptance
of its Class AA Certificate that it will, upon payment from such Class A Certificateholder(s), Class B Certificateholder(s), Additional Certificateholder(s) or Refinancing Certificateholder(s), as the case may be, of the purchase
price set forth in the first sentence of this paragraph, forthwith sell, assign, transfer and convey to the purchaser(s) thereof (without recourse, representation or warranty of any kind except as to its own acts) all of the right, title, interest
and obligation of such Class AA Certificateholder in this Agreement, the Escrow 

  

					
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Agreement, the Deposit Agreement, the Intercreditor Agreement, the Class AA Liquidity Facility, the NPA, the Note Documents and all Class AA Certificates and Escrow Receipts held by
such Class AA 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(s) shall assume all of such Class AA Certificateholder’s obligations under this Agreement, the Escrow Agreement, the Deposit Agreement, the Intercreditor Agreement, the
Class AA Liquidity Facility, the NPA, the Note Documents and all such Class AA Certificates and Escrow Receipts. The Class AA Certificates will be deemed to be purchased on the date payment of the purchase price is made
notwithstanding the failure of any Class AA Certificateholder to deliver any Class AA Certificate and, upon such a purchase, (i) the Class AA Certificateholders shall have no further rights with respect to the Class AA
Certificates and (ii) if the purchaser(s) shall so request, each such Class AA Certificateholder will comply with all the provisions of Section 3.04 of the Basic Agreement and the applicable provisions of this Trust Supplement to
enable new Class AA Certificates to be issued to the purchaser(s) in such denominations otherwise authorized under this Agreement as it shall request. All charges and expenses in connection with the issuance of any such new Class AA
Certificates shall be borne by the purchaser(s) thereof. 
 (b) This Section 6.01 supplements and, to the extent inconsistent with any
provision of Section 6.01(b) of the Basic Agreement, replaces the provisions of Section 6.01(b) of the Basic Agreement. Notwithstanding anything to the contrary set forth herein or in any Operative Agreement, the provisions of this
Section 6.01 may not be amended in any manner without the consent of each Class AA Certificateholder, each Class A Certificateholder, each Class B Certificateholder and each Additional Certificateholder (if any) or, as the case
may be, Refinancing Certificateholder (if any) (in each case, other than the Company or any of its Affiliates in its respective capacity as a Certificateholder) that would be adversely affected thereby; provided that the purchase price under
this Section 6.01 (as in effect on the date hereof) for any Certificate held by the Company or any of its Affiliates shall not be modified without the prior written consent of the Company. For the avoidance of doubt, if a Certificate Buy-Out Event ceases to exist and another Certificate Buy-Out Event occurs and is continuing, the purchase rights set forth in Section 6.01(a) shall be revived
notwithstanding any exercise of such rights during the continuance of any preceding Certificate Buy-Out Event. 

ARTICLE VII 
 THE
TRUSTEE 
 Section 7.01 Delivery of Documents; Delivery Dates. (a) The Trustee is hereby directed (i) to execute
and deliver the Intercreditor Agreement, the Escrow Agreement and the NPA on or prior to the date of the initial issuance of the Class AA Certificates (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 Class AA Certificates in authorized denominations equaling in the aggregate the amount set forth, with respect to the Class AA Trust, in Schedule I to the Underwriting Agreement evidencing the entire
ownership interest in the Class AA Trust, which amount equals the maximum aggregate principal amount of Series AA Equipment Notes which may be purchased from time to time by the Trustee pursuant to the NPA. Except as provided in
Sections 3.03, 3.04, 3.05 and 3.06 of the Basic Agreement or Section 4.03 of this Trust Supplement, the Trustee shall not execute, authenticate or deliver Class AA Certificates in excess of the aggregate amount specified in this
paragraph. The provisions of this Section 7.01(a) supersede and replace the first three sentences of Section 2.02(a) of the Basic Agreement and the first sentence of Section 3.02(a) of the Basic Agreement, with respect to the
Class AA Trust. 

  

					
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 (b) On or after the Issuance Date, the Company may deliver from time to time, and in accordance
with Section 1(b) of the NPA, to the Trustee a Funding Notice relating to one or more Series AA Equipment Notes. After receipt of such a Funding Notice and in any case no later than one Business Day prior to a Funding Date as to which such
Funding Notice relates (the “Applicable Funding Date”), the Trustee shall (as and when specified in the Funding Notice) deliver to the Escrow Agent the Withdrawal Certificates and related Applicable Notices of Purchase Withdrawal, as
contemplated by Section 1.02(c) of the Escrow Agreement and by such Funding Notice. The Trustee shall (as and when specified in such Funding Notice), subject to the conditions set forth in Section 2 of the NPA, enter into and perform its
obligations under the Participation Agreement specified in such Funding Notice (the “Applicable Participation Agreement”) and cause such certificates, documents and legal opinions relating to the Trustee to be duly delivered as required by
the Applicable Participation Agreement. If at any time prior to the Applicable Funding Date, the Trustee receives from the Company a notice pursuant to the first sentence of Section 1(f) of the NPA, then the Trustee shall give notice to the
Depositary (with a copy to the Escrow Agent) of the cancellation of such Notice of Purchase Withdrawal relating to such Deposit or Deposits on such Applicable Funding Date as contemplated by Section 2.3 of the Deposit Agreement. Upon
satisfaction of the conditions specified in the NPA and the Applicable Participation Agreement, the Trustee shall purchase the applicable Series AA Equipment Notes with the proceeds of the withdrawals of one or more Deposits made on the Applicable
Funding Date in accordance with the terms of the Deposit Agreement and the Escrow Agreement. The purchase price of such Series AA Equipment Notes shall equal the principal amount of such Series AA Equipment Notes. Amounts withdrawn from such Deposit
or Deposits in excess of the purchase price of the Series AA Equipment Notes or to the extent not applied on the Applicable Funding Date to the purchase price of the Series AA Equipment Notes shall be
re-deposited by the Trustee with the Depositary on the Applicable Funding Date in accordance with the terms of the Deposit Agreement. The provisions of this Section 7.01(b) supersede and replace the last
sentence of Section 2.02(a) of the Basic Agreement and the provisions of Section 2.02(b) of the Basic Agreement with respect to the Class AA Trust, and no provisions of the Basic Agreement relating to Postponed Notes and
Section 2.02(b) of the Basic Agreement shall apply to the Class AA Trust. 
 (c) With respect to the Class AA Trust,
Section 4.01(b) of the Basic Agreement is superseded and replaced in its entirety with the following: “The Trustee shall establish and maintain on behalf of the Class AA 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 Class AA
Certificateholders and shall make or permit withdrawals therefrom only as provided in the Agreement or the Intercreditor 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.” 
 (d)
With respect to the Class AA Trust, the second through fifth sentences of Section 4.02(c) of the Basic Agreement shall be superseded and replaced in their entirety with the following sentence: “Subject to the provisions of the
Intercreditor Agreement: (i) in the event of redemption or purchase of Series AA Equipment Notes held in the Class AA Trust, such notice shall be mailed (or in the case of Global Certificates, sent electronically in accordance with
DTC’s applicable procedures) not less than 15 days prior to the Special Distribution Date for the Special Payment resulting from such redemption or purchase, which Special Distribution Date shall be the date of such redemption or purchase; and
(ii) in the case of any other Special Payments, such notice of Special Payment shall be mailed (or in the case of Global Certificates, sent electronically in accordance with DTC’s applicable procedures) as soon as practicable after the
Trustee has confirmed that it has received funds for such Special Payment and shall state the Special Distribution Date for such Special Payment, which shall occur 15 days after the date of such notice of Special Payment or (if such 15th day is not
practicable) as soon as practicable thereafter.” 

  

					
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 (e) With respect to the Class AA Trust, clause (ii) of the sixth sentence of
Section 4.02(c) of the Basic Agreement shall be amended by deleting in its entirety the parenthetical phrase “(taking into account any payment to be made by the Company pursuant to Section 2.02(b)).” 

Section 7.02 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, as contemplated by clause (ii) of Section 1.02(f) of the Escrow Agreement, that the Trustee’s obligation to purchase Series AA
Equipment Notes under the NPA has terminated and the Cut-off Date has occurred. 
 Section 7.03
The Trustee. (a) Subject to Section 7.04 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 Intercreditor Agreement, the Deposit Agreement, the NPA or the Escrow 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 or the other parties thereto (other than the Trustee), except that the Trustee hereby represents and warrants that each of this Trust
Supplement, the Basic Agreement, each Class AA Certificate, the Intercreditor Agreement, the NPA and the Escrow 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) In addition to the requirements in Section 7.08 of the Basic Agreement, the Trustee shall at all times be a bank or trust
company, organized and doing business under the laws of the United States or any state thereof, a substantial part of the business of which consists of (i) receiving deposits and making loans or (ii) exercising fiduciary powers similar to
those permitted to national banks by the Comptroller of the Currency, and which is subject to supervision and examination by state or federal authority having supervision over banking institutions. 

Section 7.04 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 NPA, the Class AA Certificates 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 NPA, the Class AA Certificates 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
NPA, the Class AA Certificates 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 governing its banking powers 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
NPA, the Class AA Certificates and the Note Documents to which it is or is to become a party will not require the authorization, consent, or approval 

  

					
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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 NPA, the Class AA Certificates 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 7.05 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 are
attributable to the Trustee in its individual capacity and which are unrelated to the transactions contemplated by the Intercreditor Agreement or the NPA. 

ARTICLE VIII 

ADDITIONAL AMENDMENT; SUPPLEMENTAL AGREEMENTS 

Section 8.01 Amendment of Sections 5.02, 6.07, 7.09, 8.04, 9.01, 12.01 and 12.02 of the Basic Agreement. For purposes of this
Agreement, the Basic Agreement shall be deemed amended as follows: 
 (a) Section 5.02 of the Basic Agreement shall be deemed amended
and restated in its entirety to read as set forth in Part A of Exhibit C. 
 (b) Section 6.07 of the Basic Agreement shall be deemed
amended and restated in its entirety to read as set forth in Part B of Exhibit C. 
 (c) Section 7.09 of the Basic Agreement shall be
deemed amended by amending and restating the second sentence of subsection (e) thereof in its entirety to read as set forth in Part C of Exhibit C. 

(d) Section 8.04 of the Basic Agreement shall be deemed amended by amending and restating subsection (a) thereof in its entirety to
read as set forth in Part D of Exhibit C. 
 (e) Section 9.01 of the Basic Agreement shall be deemed amended by amending and restating
clause (4) thereof in its entirety to read as set forth in Part E of Exhibit C. 
 (f) Section 12.01 of the Basic Agreement shall
be deemed amended and restated in its entirety to read as set forth in Part F of Exhibit C. 
 (g) Section 12.02 of the Basic Agreement
shall be deemed amended and restated in its entirety to read as set forth in Part G of Exhibit C. 
 Section 8.02 Supplemental
Agreements Without Consent of Class AA Certificateholders. Without limitation of Section 9.01 of the Basic Agreement (for the avoidance of doubt, as amended by Section 8.01 above), under the terms of, and subject to
the limitations contained in, such 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, at any time and


  

					
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from time to time, enter into (or, in the case of the Deposit Agreement, consent to) and, if applicable, request the Escrow Agent and Escrow Paying Agent to enter into (i) one or more
agreements supplemental to the Escrow Agreement, the NPA or the Deposit Agreement, for any of the purposes set forth in clauses (1) through (9) of such Section 9.01, and (without limitation of the foregoing or Section 9.01 of the
Basic Agreement) (a) clauses (2) and (3) of such Section 9.01 shall also be deemed to include the Company’s obligations under (in the case of clause (2)), and the Company’s rights and powers conferred by (in the
case of clause (3)), the NPA and any Participation Agreement, (b) references in clauses (4) and (6) of such Section 9.01 to “any Intercreditor Agreement or any Liquidity Facility” shall also be deemed to refer
to “the Intercreditor Agreement, the Class AA Liquidity Facility, the Escrow Agreement, the NPA, any Participation Agreement or the Deposit Agreement”, and (c) references to “any Intercreditor Agreement or any Liquidity
Facility” in clause (7) of such Section 9.01 shall also be deemed to refer to “the Intercreditor Agreement, the NPA, any Indenture, the Class AA Liquidity Facility, the Escrow Agreement, the Deposit Agreement or any
Participation Agreement”, (ii) one or more agreements supplemental to any Operative Agreement, the NPA, the Escrow Agreement or the Deposit Agreement to provide for the formation of one or more Additional Trusts in existence at any one
time, the issuance of one or more Classes of Additional Certificates from time to time, the purchase by any 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, all as provided in Section 4(a)(v) of the NPA and Section 8.01(d) of the Intercreditor Agreement, and (iii) one or more agreements supplemental to any Operative Agreement, the NPA, the
Escrow Agreement or the Deposit Agreement to provide for the formation of one or more Refinancing Trusts, the issuance of one or more Classes of Refinancing Certificates, the purchase by any Refinancing Trust of applicable Refinancing Equipment
Notes and other matters incidental thereto or as otherwise contemplated by Section 2.01(b) of the Basic Agreement, all as provided in Section 4(a)(v) of the NPA and Section 8.01(c) of the Intercreditor Agreement. In addition, the
following provisions of Section 9.01 of the Basic Agreement shall be amended, with respect to the Class AA Trust, as follows: (A) Section 9.01(5) of the Basic Agreement shall be amended by inserting the phrase “(or to
facilitate any listing of any Certificates on any exchange or quotation system) or any requirement of DTC or like depositary,” after the phrase “any exchange or quotation system on which the Certificates of any series are listed” but
before the phrase “or of any regulatory body”; (B) Section 9.01(6) of the Basic Agreement shall be amended by inserting the phrase “to establish or” after the phrase “to such extent as shall be necessary” but
before the phrase “to continue”; and (C) Section 9.01(7) of the Basic Agreement shall be amended by replacing the phrase “and to add to or change” with the phrase “, or to evidence the substitution of a Liquidity
Provider with a Replacement Liquidity Provider or to provide for a Replacement Liquidity Facility or to incorporate appropriate mechanics for multiple instruments for a Replacement Liquidity Facility for a single Trust, all as provided in any
Intercreditor Agreement; or to evidence the substitution of a Depositary with a Replacement Depositary or to provide for a Replacement Deposit Agreement, all as provided in the NPA; or to evidence and provide for the acceptance of appointment by a
successor Escrow Agent or successor Escrow Paying Agent under the Escrow Agreement; or to provide multiple Liquidity Facilities with respect to one or more Trusts; or to add to or change”. 

Section 8.03 Supplemental Agreements with Consent of Class AA 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 Class AA Liquidity Facility or the NPA or modifying in any manner the rights and obligations of the Class AA Certificateholders under the Escrow Agreement, the Deposit Agreement, the
Class AA Liquidity Facility or the NPA; 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 Class AA
Certificateholders of payments upon the Deposits. 

  

					
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 Section 8.04 Consent of Trustees for Amendment of Section 6.01.
Notwithstanding any provision in Section 8.02 or Section 8.03 of this Trust Supplement to the contrary, no amendment or modification of Section 6.01 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. 
 Section 8.05 Notice to Rating Agencies.
Promptly following its receipt of each amendment, consent, modification, supplement or waiver contemplated by this Article VIII, the Trustee shall send a copy thereof to each Rating Agency. 

ARTICLE IX 

MISCELLANEOUS PROVISIONS 

Section 9.01 Final Termination Date. The respective obligations and responsibilities of the Company and the Trustee created hereby
and the Class AA Trust created hereby shall terminate upon the distribution to all Class AA Certificateholders and the Trustee of all amounts required to be distributed to them pursuant to this Agreement and the disposition of all property
held as part of the Trust Property; provided, however, that in no event shall the Trust created hereby continue beyond the expiration of 21 years from the death of the last survivor of the descendants of Joseph P. Kennedy, Sr., the
father of John F. Kennedy, former President of the United States, living on the date of this Trust Supplement. 
 Notice of any termination
of the Class AA Trust, specifying the applicable Regular Distribution Date (or applicable Special Distribution Date, as the case may be) upon which the Class AA Certificateholders may surrender their Class AA Certificates to the
Trustee for payment of the final distribution and cancellation, shall be mailed (or in the case of Global Certificates, sent electronically in accordance with DTC’s applicable procedures) promptly by the Trustee to the Class AA
Certificateholders not earlier than 60 days and not later than 15 days preceding such final distribution. 
 Section 9.02 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. To the extent that any provisions of the Basic Agreement are superseded by any provisions of this Trust Supplement, any reference to such provisions of the Basic Agreement herein or in the Basic
Agreement shall be deemed to be to such provisions of this Trust Supplement. 
 Section 9.03 Governing Law. THIS AGREEMENT HAS
BEEN DELIVERED IN THE STATE OF NEW YORK AND THIS AGREEMENT AND THE CLASS AA CERTIFICATES SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAW OF THE STATE OF NEW YORK, INCLUDING ALL MATTERS OF CONSTRUCTION, VALIDITY AND PERFORMANCE. 

Section 9.04 Counterparts. This Trust Supplement may be executed in any number of counterparts (and each of the parties shall
not be required to execute the same counterpart). Each counterpart of this Trust Supplement including a signature page or pages executed by each of the parties hereto shall be an original counterpart of this Trust Supplement, but all of such
counterparts together shall constitute one instrument. 
 Section 9.05 Intention of Parties. The parties hereto intend that the
Class AA Trust be classified for United States federal income tax purposes as a grantor trust under Subpart E, Part I, Subchapter J, Chapter 1 of Subtitle A of the Code, and not as a trust or association taxable as a corporation or as
a partnership. Each Certificateholder of, and each Person acquiring a beneficial interest in, a Class AA Certificate, by its acceptance of its Class AA Certificate or a beneficial interest therein, 

  

					
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 agrees to treat the Class AA Trust as a grantor trust for all United States federal, state and local income
tax purposes. The Trustee shall not be authorized or empowered to do anything that would cause the Class AA Trust to fail to qualify as a grantor trust for such tax purposes (including as subject to this restriction, acquiring any Aircraft by
bidding the Equipment Notes relating thereto or otherwise, or taking any action with respect to any such Aircraft once acquired). 

Section 9.06 Submission to Jurisdiction. Each of the parties hereto, to the extent it may do so under applicable law, for purposes
hereof and of all other Operative Agreements hereby (i) irrevocably submits itself to the non-exclusive jurisdiction of the courts of the State of New York sitting in the City of New York and to the non-exclusive jurisdiction of the United States District Court for the Southern District of New York, for the purposes of any suit, action or other proceeding arising out of this Agreement, the subject matter hereof
or any of the transactions contemplated hereby brought by any party or parties hereto or thereto, or their successors or permitted assigns and (ii) waives, and agrees not to assert, by way of motion, as a defense, or otherwise, in any such
suit, action or proceeding, that the suit, action or proceeding is brought in an inconvenient forum, that the venue of the suit, action or proceeding is improper or that this Agreement or the subject matter hereof or any of the transactions
contemplated hereby may not be enforced in or by such courts. 
 Section 9.07 Successor and Assigns. All covenants, agreements,
representations and warranties in this Agreement by the Trustee and the Company shall bind and, to the extent permitted hereby, shall inure to the benefit of and be enforceable by their respective successors and assigns, whether so expressed or not.
Any request, notice, direction, consent, waiver or other instrument or action by any Class AA Certificateholder shall bind the successors and assigns of such Class AA Certificateholder. 

Section 9.08 Normal Commercial Relations. Anything contained in this Agreement to the contrary notwithstanding, the Trustee and
any Class AA Certificateholder, or any bank or other Affiliate of any such party, may conduct any banking or other financial transactions, and have banking and other commercial relationships, with the Company fully to the same extent as if this
Agreement were not in effect, including without limitation the making of loans or other extensions of credit to the Company for any purpose whatsoever, whether related to any of the transactions contemplated hereby or otherwise. 

Section 9.09 No Recourse against Others. No past, present or future director, officer, employee, agent, member, manager, trustee
or stockholder, as such, of the Company or any successor Person shall have any liability for any obligations of the Company or any successor Person, either directly or through the Company or any successor Person, under the Class AA Certificates
or this Agreement or for any claim based on, in respect of or by reason of such obligations or their creation, whether by virtue of any rule of law, statute or constitutional provision of by the enforcement of any assessment or by any legal or
equitable proceeding or otherwise. By accepting a Class AA Certificate, each Class AA Certificateholder agrees to the provisions of this Section 9.09 and waives and releases all such liability. Such waiver and release shall be part of
the consideration for the issue of the Class AA Certificates. 
 [Remainder of Page Intentionally Blank; Signature Pages Follow]

  

  

					
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 IN WITNESS WHEREOF, the parties have caused this Trust Supplement to be duly executed by their
respective officers thereto duly authorized as of the date first written above. 
  

			
	SPIRIT AIRLINES, INC.
		
	By:	 	 /s/ Edward Christie

		 	Name:  Edward Christie
		 	Title:    Executive Vice President and
		 	             Chief Financial Officer


 Signature Page 

  

					
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	 WILMINGTON TRUST, NATIONAL ASSOCIATION,

as Trustee

		
	By:	 	 /s/ Jacqueline Solone

		 	Name: Jacqueline Solone
		 	Title:   Vice President


 Signature Page 

  

					
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 EXHIBIT A to 

TRUST SUPPLEMENT NO. 2017-1AA 

FORM OF CERTIFICATE 

[UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION
(“DTC”), TO THE TRUSTEE OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IN EXCHANGE FOR THIS CERTIFICATE 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 HEREON 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 AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.]* 

BY ITS ACQUISITION HEREOF, THE HOLDER REPRESENTS THAT EITHER (A) NO ASSETS OF A PLAN OR ANY TRUST ESTABLISHED WITH RESPECT TO A PLAN HAVE
BEEN USED TO PURCHASE OR HOLD THIS CERTIFICATE OR AN INTEREST HEREIN OR (B) THE PURCHASE AND HOLDING OF THIS CERTIFICATE OR INTEREST HEREIN BY SUCH A PERSON ARE EXEMPT FROM THE PROHIBITED TRANSACTION RESTRICTIONS OF ERISA AND THE CODE OR
PROVISIONS OF SIMILAR LAW PURSUANT TO ONE OR MORE PROHIBITED TRANSACTION STATUTORY OR ADMINISTRATIVE EXEMPTIONS OR SIMILAR EXEMPTIONS UNDER SIMILAR LAW. 

FURTHER, BY ITS ACQUISITION HEREOF, A HOLDER WHO IS AN ERISA PLAN REPRESENTS THAT THE DECISION TO ACQUIRE OR ACCEPT THIS CERTIFICATE OR
INTEREST HEREIN HAS BEEN MADE BY A DULY AUTHORITZED FIDUCIARY OF THE ERISA PLAN THAT (A) IS INDEPENDENT (AS THAT TERM IS USED IN 29 C.F.R. 2510-3-21(c)(1)) OF THE
COMPANY AND ITS AFFILIATES AND THERE IS NO FINANCIAL INTEREST, OWNERSHIP INTEREST, OR OTHER RELATIONSHIP, AGREEMENT OR UNDERSTANDING OR OTHERWISE THAT WOULD LIMIT ITS ABILITY TO CARRY OUT ITS FIDUCIARY RESPONSIBILITY TO THE ERISA PLAN; (B) IS A
BANK, INSURANCE CARRIER, REGISTERED INVESTMENT ADVISER, A REGISTERED BROKER-DEALER, OR AN INDEPENDENT FIDUCIARY THAT HOLDS, OR HAS UNDER MANAGEMENT OR CONTROL, TOTAL ASSETS OF AT LEAST $50 MILLION (IN EACH CASE, AS SPECIFIED IN 29 C.F.R. 2510.3-21(c)(1)(i)(A)-(E)); (C) IS CAPABLE OF EVALUATING INVESTMENT RISKS INDEPENDENTLY, BOTH IN GENERAL AND WITH REGARD TO PARTICULAR TRANSACTIONS AND INVESTMENT STRATEGIES (INCLUDING, WITHOUT LIMITATION, WITH
RESPECT TO THE DECISION TO ACQUIRE OR ACCEPT THIS CERTIFICATE OR INTEREST HEREIN); (D) HAS BEEN FAIRLY INFORMED THAT THE COMPANY AND ITS AFFILIATES HAVE NOT AND WILL NOT UNDERTAKE TO PROVIDE IMPARTIAL INVESTMENT ADVICE, OR TO GIVE ADVICE IN A
FIDUCIARY CAPACITY, IN CONNECTION WITH THE ACQUISITION OR ACCEPTANCE OF THIS CERTIFICATE OR INTEREST HEREIN; (E) HAS BEEN FAIRLY INFORMED 

 

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




  

					
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THAT THE COMPANY AND ITS AFFILIATES HAVE FINANCIAL INTERESTS IN THE ERISA PLAN’S ACQUISITION OR ACCEPTANCE OF THIS CERTIFICATE OR INTEREST HEREIN, WHICH INTERESTS MAY CONFLICT WITH THE
INTEREST OF THE ERISA PLAN, AS MORE FULLY DESCRIBED IN THE OFFERING MATERIALS; (F) IS A FIDUCIARY UNDER ERISA OR THE CODE, OR BOTH, WITH RESPECT TO THE DECISION TO ACQUIRE OR ACCEPT THIS CERTIFICATE OR INTEREST HEREIN AND IS RESPONSIBLE FOR
EXERCISING (AND HAS EXERCISED) INDEPENDENT JUDGMENT IN EVALUATING WHETHER TO INVEST THE ASSETS OF THE ERISA PLAN IN THIS CERTIFICATE OR INTEREST HEREIN; AND (G) IS NOT PAYING FOR THE COMPANY OR ANY OF ITS AFFILIATES, ANY FEE OR OTHER
COMPENSATION DIRECTLY FOR THE PROVISION OF INVESTMENT ADVICE (AS OPPOSED TO OTHER SERVICES) IN CONNECTION WITH THE ERISA PLAN’S ACQUISITION OR ACCEPTANCE OF THIS CERTIFICATE OR INTEREST HEREIN. 

CERTAIN TERMS USED IN THE FOREGOING PARAGRAPHS SHALL HAVE THE MEANINGS SPECIFIED IN THE AGREEMENT. 

  

					
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 [GLOBAL CERTIFICATE]† 
 SPIRIT AIRLINES PASS THROUGH TRUST 2017-1AA 
 SPIRIT AIRLINES PASS THROUGH CERTIFICATE,
SERIES 2017-1AA 
 Final Expected Regular Distribution Date: February 15, 2030 

evidencing a fractional undivided interest in the
Trust,                       

the property of which includes or will include,
among                       

other things, certain Equipment Notes each secured
by                       

an Aircraft owned by Spirit Airlines,
Inc.                                         
   
  

					
	Certificate No.             	  	$                 Fractional Undivided Interest representing 0.0004046960934686100% of the Trust per $1,000 face amount	  	             CUSIP No. 84858W AA4

 

            ISIN No. US84858WAA45


 THIS CERTIFIES THAT
                , for value received, is the registered owner of a
$                (                dollars) Fractional Undivided Interest (or such lesser
amounts as shall be the aggregate outstanding face amount hereof as set forth in the records of the Trustee) in the Spirit Airlines Pass Through Trust, Series 2017-1AA (the “Trust”) created by
WILMINGTON TRUST, NATIONAL ASSOCIATION, as trustee (together with any successor in interest and any successor or other trustee appointed pursuant to the Trust Supplement referred to below, the “Trustee”) under a Pass Through Trust
Agreement, dated as of August 11, 2015 (the “Basic Agreement”), between Wilmington Trust, National Association and Spirit Airlines, Inc., a Delaware corporation (together with any successor in interest pursuant to Section 5.02 of
the Basic Agreement, the “Company”), as supplemented by Trust Supplement No. 2017-1AA thereto dated as of November 28, 2017 (collectively with the Basic Agreement, and as may be amended
from time to time, 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 “Spirit Airlines Pass Through Certificates, Series 2017-1AA” (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 Certificateholder of this Certificate assents to and agrees to be bound
by all of the provisions of the Agreement and the Intercreditor Agreement, including the subordination provisions of Section 9.09 of the Intercreditor Agreement. The Trust Property is expected to include certain Equipment Notes and includes all
rights of the Trust and the Trustee, on behalf of the Trust, to receive any payments under the Intercreditor Agreement and the Class AA Liquidity Facility. Each issue of the Equipment Notes will be secured by, among other things, a security
interest in the Aircraft owned by the Company. 
 The Certificates represent Fractional Undivided Interests in the Trust and the Trust
Property, and will 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 each February 15 and August 15 (each, a “Regular Distribution Date”), commencing on August 15, 2018, 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 Series AA Equipment Notes due on such Regular Distribution Date, the receipt of which has been confirmed by the Trustee, equal to 

 
  

	† 	 To be included on the face of each Global Certificate.




  

					
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the product of the percentage interest in the Trust evidenced by this Certificate and an amount equal to the sum of such Scheduled Payments. Subject to and in accordance with the terms of the
Agreement and the Intercreditor Agreement, in the event that Special Payments on the Series AA 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 applicable Special Distribution Date, an amount in respect of such Special Payments on the Series AA 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 and no interest shall accrue during the intervening period. The Trustee shall mail (or in the case of Global Certificates, send
electronically in accordance with DTC’s applicable procedures) 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 the 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 distributions 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 (or in the case of Global Certificates, sent electronically in accordance with DTC’s applicable
procedures) 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, the Trustee, the
Subordination Agent, any Loan Trustee or any Affiliate of any 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 any payment or distribution to such Certificateholder
pursuant to the terms of the Agreement and that it will not have any recourse to the Company, the Trustee, the Loan Trustees or any Affiliate of any thereof except as otherwise expressly provided in the Agreement, in any Note Document or in the
Intercreditor Agreement. This Certificate does not purport to summarize the Agreement and reference is made to the Agreement for information with respect to the interests, rights, benefits, obligations, proceeds and duties evidenced hereby. A copy
of the Agreement may be examined during normal business hours at the principal office of the Trustee, and at such other places, if any, designated by the Trustee, by any Certificateholder upon request. 

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

  

					
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 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. 

The Certificates are issuable only as registered Certificates without coupons in minimum denominations of $2,000 (or such other denomination
that is the lowest integral multiple of $1,000 that is, at the time of issuance, equal to at least 1,000 euros) Fractional Undivided Interest and integral multiples of $1,000 in excess 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. 

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

Each Certificateholder and Person with a beneficial interest herein, by its acceptance of this Certificate or such interest, agrees to treat
the Trust as a grantor trust for all U.S. federal, state and local income tax purposes. 
 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
(a) represent and warrant to the Company, the Loan Trustees and the Trustee that either: (i) no assets of a Plan or any trust established with respect to a Plan have been used to purchase or hold this Certificate or an interest herein or
(ii) the purchase and holding of this Certificate or interest herein by such Person are exempt from the prohibited transaction restrictions of ERISA and the Code or provisions of Similar Law pursuant to one or more prohibited transaction
statutory or administrative exemptions or similar exemptions under Similar Law and (b) direct the Trustee to invest the assets held in the Trust pursuant to, and take all other actions contemplated by, the terms and conditions of the Basic
Agreement, this Trust Supplement, the Intercreditor Agreement, the Deposit Agreement, the Escrow Agreement, the NPA, and each Participation Agreement. 

Any Person who is an ERISA Plan and is acquiring or accepting this Certificate or an interest herein will, by such acquisition or acceptance,
be deemed to represent and warrant to the Company, the Loan Trustees and the Trustee that the decision to acquire or accept this Certificate or interest herein has been made by a duly authorized fiduciary of the ERISA Plan that (i) is
independent (as that term is used in 29 C.F.R. 2510.3-21(c)(1)) of the Company and its Affiliates and there is no financial interest, ownership interest, or other relationship, agreement or understanding or
otherwise that would limit its ability to carry out its fiduciary responsibility to the ERISA Plan; (ii) is a bank, insurance carrier, registered investment adviser, a registered broker-dealer, or an independent fiduciary that holds, or has
under management or control, total assets of at least $50 million (in each case, as specified in 29 C.F.R. 

  

					
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2510.3-21(c)(1)(i)(A)-(E)); (iii) is capable of evaluating investment risks independently, both in general and with regard to particular transactions and
investment strategies (including, without limitation, with respect to the decision to acquire or accept this Certificate or interest herein); (iv) has been fairly informed that the Company and its Affiliates have not and will not undertake to
provide impartial investment advice, or to give advice in a fiduciary capacity, in connection with the acquisition or acceptance of this Certificate or interest herein; (v) has been fairly informed that the Company and its Affiliates have
financial interests in the ERISA Plan’s acquisition or acceptance of this Certificate or interest herein, which interests may conflict with the interest of the ERISA Plan, as more fully described in the offering materials; (vi) is a
fiduciary under ERISA or the Code, or both, with respect to the decision to acquire or accept this Certificate or interest herein and is responsible for exercising (and has exercised) independent judgment in evaluating whether to invest the assets
of the ERISA Plan in this Certificate or interest herein; and (vii) is not paying the Company or any of its Affiliates, any fee or other compensation directly for the provision of investment advice (as opposed to other services) in connection
with the ERISA Plan’s acquisition or acceptance of this Certificate or interest herein. 
 THIS CERTIFICATE AND THE AGREEMENT SHALL
BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAW OF THE STATE OF NEW YORK, INCLUDING ALL MATTERS OF CONSTRUCTION, VALIDITY AND PERFORMANCE. 

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. 

  

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

 

			
	SPIRIT AIRLINES PASS THROUGH TRUST 2017-1AA
		
	By:	 	WILMINGTON TRUST, NATIONAL ASSOCIATION,
		 	as Trustee
		
	By:	 	  

		 	Title:


 Dated: 

  

					
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 TRUSTEE’S CERTIFICATE OF AUTHENTICATION 

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

 

			
	WILMINGTON TRUST, NATIONAL ASSOCIATION, as Trustee
		
	By:	 	  

		 	Authorized Officer



  

					
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 [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 Trustee with full power of substitution in the premises. 

 

			
	 Date:
                                         
                       
	  	                                      
                          
		  	NOTICE: The signature to this assignment 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:
                                         
   

 Signatures must be guaranteed by an “eligible guarantor institution” meeting the requirements of the
Registrar, which requirements include membership or participation in the Security Transfer Agent Medallion Program (“STAMP”) or such other “signature guarantee program” as may be determined by the Registrar in addition to, or in
substitution for, STAMP, all in accordance with the Securities Exchange Act of 1934, as amended. 

  

					
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 EXHIBIT B to 

TRUST SUPPLEMENT NO. 2017-1AA 

DTC LETTER OF REPRESENTATIONS 

  

					
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 EXHIBIT C to 

TRUST SUPPLEMENT NO. 2017-1AA 

AMENDMENTS TO BASIC AGREEMENT 
 Part A

 Section 5.02. Consolidation, Merger, Etc. The Company shall not consolidate with or merge into any other
Person or convey, transfer or lease substantially all of its assets as an entirety to any Person, unless: 
 (i) the
successor or transferee entity shall, if and to the extent required under Section 1110 in order that any Loan Trustee continues to be entitled to any benefits of Section 1110 with respect to any Aircraft, be a holder of an air carrier
operating certificate issued by the Secretary of Transportation pursuant to Chapter 447 of Title 49 of the United States Code for aircraft capable of carrying ten or more individuals or 6,000 pounds or more of cargo, and shall execute and deliver to
the Trustee an agreement containing the express assumption by such successor or transferee entity of the due and punctual performance and observance of each covenant and condition of the Note Documents, the NPA and this Agreement to be performed or
observed by the Company; and 
 (ii) the Company shall deliver to the Trustee a certificate signed by a Responsible Officer
of the Company stating that such consolidation, merger, conveyance, transfer or lease and the assumption agreement mentioned in clause (i) above comply with this Section 5.02. 

Upon any consolidation or merger, or any conveyance, transfer or lease of substantially all of the assets of the Company as an
entirety in accordance with this Section 5.02, the successor Person formed by such consolidation or into which the Company is merged or to which such conveyance, transfer or lease is made shall succeed to, and be substituted for, and may
exercise every right and power of, the Company under the Note Documents, the NPA and this Agreement with the same effect as if such successor Person had been named as the Company herein. 

Part B 
 Section 6.07.
Certificateholders May Not Bring Suit Except Under Certain Conditions. A Certificateholder of any series shall not have the right to institute any suit, action or proceeding at law or in equity or otherwise with respect to this Agreement, the
related Trust Supplement or the Certificates or otherwise, or for the appointment of a receiver or for the enforcement of any other remedy under this Agreement, the related Trust Supplement or the Certificates or otherwise, unless: 

 

	 	(1)	such Certificateholder previously shall have given written notice to the Trustee of a continuing Event of Default; 

  

	 	(2)	Certificateholders holding Certificates of such series evidencing Fractional Undivided Interests aggregating not less than 25% of the related Trust shall have requested the Trustee in writing to institute such action,
suit or proceeding and shall have offered to the Trustee indemnity as provided in Section 7.03(e); 


  

					
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	 	(3)	the Trustee shall have refused or neglected to institute any such action, suit or proceeding for 60 days after receipt of such notice, request and offer of indemnity; and 


 

	 	(4)	no Direction inconsistent with such written request shall have been given to the Trustee during such 60-day period by either Certificateholders holding Certificates of such series
evidencing Fractional Undivided Interests aggregating not less than a majority in interest in the related Trust or the Controlling Party under the related Intercreditor Agreement. 


Except to the extent provided in any applicable Intercreditor Agreement or in any applicable Trust Supplement, it is understood
and intended that no one or more of the Certificateholders of any series shall have any right in any manner whatsoever hereunder or under the related Trust Supplement or under the Certificates of such series to (i) surrender, impair, waive,
affect, disturb or prejudice any property in the Trust Property of the related Trust, or the lien of any related Indenture on any property subject thereto, or the rights of the Certificateholders of such series or the holders of the related
Equipment Notes, (ii) obtain or seek to obtain priority over or preference with respect to any other such Certificateholder of such series or (iii) enforce any right under this Agreement, the related Trust Supplement or under the
Certificates of such series, except in the manner provided in this Agreement and for the equal, ratable and common benefit of all the Certificateholders of such series. 

Part C 
 Provided that
there is a bank or trust company in a U.S. jurisdiction where there are no Avoidable Taxes that is willing to act as Trustee and is eligible to act as Trustee under Section 7.08 and the applicable provisions of any Trust Supplement, the Company
shall promptly appoint a successor Trustee of such Trust in a jurisdiction where there are no Avoidable Taxes. 
 Part D 

(a) file with the Trustee, within 30 days after the Company files the same with the SEC, copies of the annual reports and of
the information, documents and other reports (or copies of such portions of any of the foregoing as the SEC may from time to time by rules and regulations prescribe) which the Company is required to file with the SEC pursuant to Section 13 or
Section 15(d) of the Securities Exchange Act of 1934, as amended; or, if the Company is not required to file information, documents or reports pursuant to either of such sections, then to file with the Trustee and the SEC, in accordance with
rules and regulations prescribed by the SEC, such supplementary and periodic information, documents and reports which may be required pursuant to Section 13 of the Securities Exchange Act of 1934, as amended, in respect of a security listed and
registered on a national securities exchange as may be prescribed in such rules and regulations; 
 Part E 

(4) (A) to cure any ambiguity or to correct any mistake or inconsistency contained in this Basic Agreement or in any related
Trust Supplement, any Intercreditor Agreement or any Liquidity Facility; or (B) to make or modify any other provision in regard to matters or questions arising under this Basic Agreement or any related Trust Supplement, any Intercreditor
Agreement or any Liquidity Facility as the Company may deem necessary or desirable and that will not materially adversely affect the interests of the related Certificateholders; or (C) to correct or


  

					
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supplement the description of any property constituting property of any Trust or the description of any Aircraft, and to reflect the substitution of another aircraft for any Aircraft; or 

Part F 

Section 12.01. Limitation on Rights of Certificateholders. (a) The insolvency, death or incapacity of any
Certificateholder of any series shall not operate to terminate this Agreement or the related Trust, nor entitle such Certificateholder’s legal representative or heirs to claim an accounting or to take any action or commence any proceeding in
any court for a partition or winding up of the Trust, nor otherwise affect the rights, obligations and liabilities of the parties hereto or any of them. No Certificateholder of any series shall be entitled to revoke the related Trust. 

(b) No transfer, by operation of law or otherwise, of any Certificate or other right, title and interest of any
Certificateholder in and to the applicable Trust Property or under the related Trust shall operate to terminate the Trust or entitle such Certificateholder or any successor or transferee of such Certificateholder to an accounting or to the transfer
to it of legal title to any part of such Trust Property. 
 Part G 

Section 12.02. Liabilities of Certificateholders. The Certificateholders of each series shall not be personally
liable for obligations of the related Trust, the Fractional Undivided Interests represented by the Certificates of such series shall be nonassessable for any losses or expenses of such Trust or for any reason whatsoever, and the Certificates of such
series upon authentication thereof by the Trustee pursuant to Section 3.02 are and shall be deemed fully paid. No Certificateholder of such series shall have any right (except as expressly provided herein) to vote or in any manner otherwise
control the operation and management of the related Trust Property, the related Trust, or the obligations of the parties hereto, nor shall anything set forth herein, or contained in the terms of the Certificates of such series, be construed so as to
constitute the Certificateholders of such series from time to time as partners or members of an association. 

  

					
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 SCHEDULE I to 

TRUST SUPPLEMENT NO. 2017-1AA 

SERIES AA EQUIPMENT NOTES, 

PRINCIPAL AMOUNTS, MATURITIES AND AIRCRAFT 
  

									
	 Initial Principal

Amount of Series

AA Equipment

Notes*
	 	  	 Maturity
	  	 Aircraft**
	  	 Manufacturer Serial

Number**

	 	$ 18,774,000	 	  	February 15, 2030	  	A320-200	  	8018
	 	18,774,000	 	  	February 15, 2030	  	A320-200	  	8021
	 	18,816,000	 	  	February 15, 2030	  	A320-200	  	8012
	 	22,924,000	 	  	February 15, 2030	  	A321-200	  	8114
	 	22,924,000	 	  	February 15, 2030	  	A321-200	  	8047
	 	22,924,000	 	  	February 15, 2030	  	A321-200	  	8115
	 	22,940,000	 	  	February 15, 2030	  	A321-200	  	8141
	 	22,940,000	 	  	February 15, 2030	  	A321-200	  	8160
	 	18,963,000	 	  	February 15, 2030	  	A320-200	  	8176
	 	19,005,000	 	  	February 15, 2030	  	A320-200	  	TBD
	 	19,005,000	 	  	February 15, 2030	  	A320-200	  	TBD
	 	19,110,000	 	  	February 15, 2030	  	A320-200	  	TBD

  

	*	Subject to adjustment as provided in the NPA. 


	**	Subject to substitution as provided in the NPA. 


  

					
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 SCHEDULE II to 

TRUST SUPPLEMENT NO. 2017-1AA 

NOTE DOCUMENTS 

Participation Agreement 
 Indenture

 Airframe Warranties Agreement (as defined in any applicable Indenture) 

For each of the aircraft listed in Schedule I. 

  

					
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