Document:

EX-4.15

 Exhibit 4.15 

EXECUTION VERSION 
  

 
  

NOTE PURCHASE AGREEMENT 
 Dated as
of November 28, 2017 
 among 

SPIRIT AIRLINES, INC., 

WILMINGTON TRUST, NATIONAL ASSOCIATION, 

as Pass Through Trustee under each of the Pass Through Trust Agreements 

WILMINGTON TRUST, NATIONAL ASSOCIATION, 

as Subordination Agent 
 WILMINGTON
TRUST COMPANY, 
 as Escrow Agent 

and 
 WILMINGTON TRUST, NATIONAL
ASSOCIATION, 
 as Paying Agent 
  

 
  

  

					
		  		  	 Note Purchase Agreement

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 Table of Contents 

Page 

					
			
	Section 1.	 	Financing of Aircraft	  	3
			
	Section 2.	 	Conditions Precedent	  	8
			
	Section 3.	 	Representations and Warranties	  	8
			
	Section 4.	 	Covenants	  	13
			
	Section 5.	 	Depositary Downgrade and Replacement of Depositary	  	16
			
	Section 6.	 	Notices	  	18
			
	Section 7.	 	Expenses	  	19
			
	Section 8.	 	Further Assurances	  	19
			
	Section 9.	 	Miscellaneous	  	20
			
	Section 10.	 	Governing Law	  	21
			
	Section 11.	 	Submission to Jurisdiction	  	21
			
	Schedule I	 	Eligible Aircraft and Scheduled Delivery Months	  	
	Schedule II	 	Trust Supplements	  	
	Schedule III	 	Required Terms	  	
			
	Annex A	 	Definitions	  	
			
	Exhibit A	 	Form of Funding Notice	  	
	Exhibit B	 	Form of Participation Agreement	  	
	Exhibit C	 	Form of Indenture and Security Agreement	  	

  

  

					
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 NOTE PURCHASE AGREEMENT 

This NOTE PURCHASE AGREEMENT (this “Note Purchase Agreement”), dated as of November 28, 2017, is made by and among
(i) SPIRIT AIRLINES, INC., a Delaware corporation (together with its successors and permitted assigns, the “Company”), (ii) WILMINGTON TRUST, NATIONAL ASSOCIATION (“WTNA”), a national banking
association, not in its individual capacity except as otherwise expressly provided herein, but solely as trustee (in such capacity, together with any successor in interest and any successor or other trustee appointed as provided in the applicable
Pass Through Trust Agreement (as defined below), the “Pass Through Trustee”) under each of the three separate Pass Through Trust Agreements (as defined below), (iii) WILMINGTON TRUST, NATIONAL ASSOCIATION, a national banking
association, as subordination agent and trustee (in such capacity together with its successors in such capacity, the “Subordination Agent”) under the Intercreditor Agreement (as defined below), (iv) WILMINGTON TRUST COMPANY,
a Delaware trust company, as Escrow Agent (in such capacity together with its successors in such capacity, the “Escrow Agent”), under each of the Escrow and Paying Agent Agreements (as defined below), and (v) WILMINGTON
TRUST, NATIONAL ASSOCIATION, a national banking association, as Paying Agent (in such capacity together with its successors in such capacity, the “Paying Agent”) under each of the Escrow and Paying Agent Agreements. 

W I T N E S S E T H: 

WHEREAS, capitalized terms used but not defined herein shall have the meanings ascribed to such terms in Annex A hereto; 

WHEREAS, the Company has obtained commitments from the Manufacturer pursuant to the Aircraft Purchase Agreement for the delivery scheduled on
or prior to October 31, 2018 of the 12 new Airbus aircraft listed in Schedule I hereto (any such aircraft, together with any aircraft substituted therefor in accordance with the Aircraft Purchase Agreement prior to the delivery thereof,
an “Eligible Aircraft” and, collectively, the “Eligible Aircraft”); 
 WHEREAS, the Company wishes to
finance pursuant to this Note Purchase Agreement the purchase of the 12 Eligible Aircraft (each of the 12 Eligible Aircraft to be financed hereunder (or any Substitute Aircraft financed in lieu of such Eligible Aircraft pursuant to Section 1(h)
hereof), an “Aircraft” and, collectively, the “Aircraft” and, the first eight such Aircraft scheduled for delivery between December 2017 and March 2018, each an “Early Delivery Aircraft” and,
collectively, the “Early Delivery Aircraft”); 
 WHEREAS, pursuant to the Basic Pass Through Trust Agreement and each of
the Trust Supplements described in Schedule II hereto, and concurrently with the execution and delivery of this Note Purchase Agreement, three separate grantor trusts (the “Class AA Pass Through Trust”, the
“Class A Pass Through Trust” and the “Class B Pass Through Trust”, respectively, and collectively, the “Pass Through Trusts” and, individually, each a
“Pass Through Trust”) have been created to facilitate certain of the transactions contemplated hereby, including, 

  

					
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without limitation, the issuance and sale of pass through certificates pursuant thereto (together with any other pass through certificates for which such pass through certificates may be
exchanged, collectively, the “Certificates”) to provide financing, among other things, for the purchase by such Pass Through Trusts of the related series of Equipment Notes to be issued in respect of, and secured by a security
interest in, each of the Aircraft; 
 WHEREAS, the Company has entered into the Underwriting Agreement, dated November 13, 2017 (as
amended, supplemented or otherwise modified from time to time in accordance with its terms, the “Underwriting Agreement”) with the Underwriters named therein (the “Underwriters”), which provides that the Company
will cause the Pass Through Trustee under the Class AA Pass Through Trust (the “Class AA Pass Through Trustee”), the Pass Through Trustee under the Class A Pass Through Trust (the
“Class A Pass Through Trustee”) and the Pass Through Trustee under the Class B Pass Through Trust (the “Class B Pass Through Trustee”) to issue and sell the Class AA
Certificates, Class A Certificates and the Class B Certificates, respectively, to the Underwriters on the Issuance Date; 

WHEREAS, concurrently with the execution and delivery of this Note Purchase Agreement, (i) the Escrow Agent and the Depositary
have entered into that certain Deposit Agreement (Class AA), dated as of the Issuance Date, relating to the Class AA Pass Through Trust, that certain Deposit Agreement (Class A), dated as of the Issuance Date, relating to the Class A Pass
Through Trust and that certain Deposit Agreement (Class B), dated as of the Issuance Date, relating to the Class B Pass Through Trust (each such agreement, as amended, supplemented or otherwise modified from time to time in accordance with its
terms, a “Deposit Agreement” and, collectively, the “Deposit Agreements”) whereby the Escrow Agent has agreed to direct the Underwriters to make certain deposits referred to therein on the Issuance Date (the
“Initial Deposits”) and to permit the applicable Pass Through Trustees to make additional deposits from time to time thereafter (the Initial Deposits together with such additional deposits are collectively referred to as the
“Deposits”), and (ii) the Underwriters, the applicable Pass Through Trustees, the Paying Agent and the Escrow Agent have entered into that certain Escrow and Paying Agent Agreement (Class AA), dated as of the Issuance
Date, relating to the Class AA Pass Through Trust, that certain Escrow and Paying Agent Agreement (Class A), dated as of the Issuance Date, relating to the Class A Pass Through Trust and that certain Escrow and Paying Agent Agreement
(Class B), dated as of the Issuance Date, relating to the Class B Pass Through Trust (each such agreement, as amended, supplemented or otherwise modified from time to time in accordance with its terms, an “Escrow and Paying Agent
Agreement” and, collectively, the “Escrow and Paying Agent Agreements”), whereby, among other things, (a) the Underwriters have agreed to deliver an amount equal to the amount of the Initial Deposits to the
Depositary on behalf of the applicable Escrow Agent and (b) the applicable Escrow Agent, upon the Depositary receiving such Initial Deposits, has agreed to deliver escrow receipts to be affixed to each Certificate; 

  

					
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 WHEREAS, subject to the terms and conditions of this Note Purchase Agreement, each Pass Through
Trustee and each of the Subordination Agent, the Loan Trustee, WTNA and the Company will enter into the applicable Financing Agreements to which it is intended to be a party relating to each Aircraft; 

WHEREAS, upon the financing of each Aircraft, each Pass Through Trustee will fund its purchase of the related series of Equipment Notes in
respect of such Aircraft with the proceeds of one or more Deposits withdrawn by the applicable Escrow Agent under the related Deposit Agreement; and 

WHEREAS, concurrently with the execution and delivery of this Note Purchase Agreement, (i) the Class AA Liquidity Provider
has entered into the Class AA Liquidity Facility for the benefit of the holders of the Class AA Certificates, the Class A Liquidity Provider has entered into the Class A Liquidity Facility for the benefit of the holders of the
Class A Certificates and the Class B Liquidity Provider has entered into the Class B Liquidity Facility for the benefit of the holders of the Class B Certificates, in each case with the Subordination Agent, as agent for the Pass
Through Trustee on behalf of the applicable Pass Through Trust and (ii) the Pass Through Trustees, the Liquidity Providers and the Subordination Agent have entered into the Intercreditor Agreement. 

NOW, THEREFORE, in consideration of the foregoing premises and the mutual agreements herein contained and other good and valuable
consideration, the receipt and adequacy of which are hereby acknowledged, the parties hereto agree as follows: 
 SECTION 1.
Financing of Aircraft. 
 (a) Agreement to Finance. The Company confirms that it has entered into the Aircraft
Purchase Agreement with the Manufacturer pursuant to which the Company has agreed to purchase, and the Manufacturer has agreed to deliver, the Eligible Aircraft in the months specified in Schedule I hereto (which months are subject to change
as provided in the Aircraft Purchase Agreement), all on and subject to the terms and conditions specified in the Aircraft Purchase Agreement. The Company agrees to finance the Aircraft in the manner provided herein, all on and subject to the terms
and conditions hereof and of the applicable Financing Agreements, by the date referred to in clause (a) of the definition of Delivery Period Termination Date. 

(b) Funding Notice. In furtherance of the foregoing, and in respect of each Aircraft, the Company agrees to give the
parties hereto, the Depositary and each of the Rating Agencies not less than one Business Day’s prior notice (including a substitute Funding Notice under Section 1(f) or a Funding Notice in respect of a Substitute
Aircraft 

  

					
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under Section 1(h)), substantially in the form of Exhibit A hereto (each, a “Funding Notice”), of the date scheduled for the
financing as contemplated hereby in respect of such Aircraft (the “Funding Date”), which notice shall: 

(i) specify the Funding Date of such Aircraft (which shall be a Business Day on or prior to the
Cut-Off Date); 
 (ii) instruct each Pass Through Trustee to enter into the
Participation Agreement included in the Financing Agreements with respect to such Aircraft in such form and at such a time on or before the Funding Date as specified in such Funding Notice and to perform its obligations thereunder; 

(iii) instruct each Pass Through Trustee to deliver to the applicable Escrow Agent the “Withdrawal Certificate” and
the related “Applicable Notice of Purchase Withdrawal” contemplated by Section 1.02(c) of the applicable Escrow and Paying Agent Agreement with respect to the Equipment Notes to be issued to such Pass Through
Trustee in connection with the financing of such Aircraft; and 
 (iv) specify the aggregate principal amount of each series
of Equipment Notes to be issued, and purchased by each Pass Through Trustee, in connection with the financing of such Aircraft scheduled to be consummated on such Funding Date (which aggregate principal amount shall be as specified in, or as
adjusted in accordance with, as the case may be, the Required Terms, including, if such Aircraft is an Early Delivery Aircraft, to give effect to the Amortization Withdrawal, if any, for such Early Delivery Aircraft). 

(c) [Reserved.] 

(d) Entering into Financing Agreements. Upon receipt of a Funding Notice, each Pass Through Trustee shall, and shall
cause the Subordination Agent to, enter into and perform their obligations under each applicable Participation Agreement and follow the other instructions specified in such Funding Notice; provided that, with respect to each Aircraft to be
financed: 
 (i) subject to clauses (ii)-(iv) immediately below, the applicable Participation Agreement and the applicable
Indenture, as executed and delivered, shall be substantially in the respective forms thereof annexed hereto and (x) the amortization schedule for each Equipment Note issued under such Indenture shall be as set forth in the relevant table
attached as part of Schedule III hereto and (y) 

  

					
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the relevant Financing Agreements shall provide for the purchase by the applicable Pass Through Trustee of Equipment Notes of the related series in the principal amounts specified in Schedule
III hereto; 
 (ii) subject to clauses (iii) and (iv) immediately below, if (x) the Company shall have
obtained from each Rating Agency a Rating Agency Confirmation with respect to each Class of Certificates then rated by such Rating Agency in connection with any material modifications of the applicable Financing Agreements from the forms of
Financing Agreements annexed hereto (including the form of Equipment Note included in the form Indenture annexed hereto) and delivered such Rating Agency Confirmation to each Pass Through Trustee on or before the applicable Funding Date or
(y) such Rating Agency Confirmation shall have been obtained with respect to material modifications of the Financing Agreements relating to another or any Aircraft or with respect to material modifications of the forms of the Financing
Agreements annexed hereto and the applicable Financing Agreements incorporate such material modifications without additional material modifications, the applicable Financing Agreements, as executed and delivered, may incorporate such material
modifications, if any; 
 (iii) the applicable Financing Agreements, as executed and delivered, shall comply with the
Required Terms; and 
 (iv) the Company is not required to obtain or deliver a Rating Agency Confirmation or a certification
pursuant to Section 2(b)(ii) of this Note Purchase Agreement in connection with any modifications to the applicable Financing Agreements that are not material or that are expressly permitted by the Required Terms or by
Section 5(e) of this Note Purchase Agreement. 
 Notwithstanding the foregoing, (x) the Financing
Agreements with respect to any Aircraft and the forms of Financing Agreements annexed hereto may be modified to the extent required for the issuance, redemption and issuance or payment and issuance, as applicable, of new Series A Equipment Notes,
new Series B Equipment Notes or one or more series of Additional Series Equipment Notes or one or more series of new Additional Series Equipment Notes, as the case may be, pursuant to Section 4(a)(v) of this Note Purchase
Agreement, subject to the terms of such Section and of Section 8.01(c) or 8.01(d) of the Intercreditor Agreement, whichever may be applicable, and the Company shall pay the reasonable costs and expenses of the Rating
Agencies in connection with obtaining any Rating Agency Confirmation in connection therewith, and (y) the Company is not required to deliver a certification pursuant to Section 2(b)(ii) of this Note Purchase
Agreement in connection with any modifications of the Financing Agreements contemplated by this sentence. With respect to each Aircraft, the Company shall cause WTNA (or such other Person that meets the eligibility requirements to act as loan
trustee under the applicable Indenture) to execute as the applicable Loan Trustee the 

  

					
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Financing Agreements relating to such Aircraft to which such Loan Trustee is intended to be a party, and shall concurrently therewith execute such Financing Agreements to which the Company is
intended to be a party and perform its respective obligations thereunder. Upon the request of one or more Rating Agencies, the Company shall deliver or cause to be delivered to such Rating Agency or Rating Agencies a true and complete copy of each
Financing Agreement relating to the financing of each Aircraft, together with a true and complete set of the closing documentation (including legal opinions) delivered to the applicable Loan Trustee, the Subordination Agent and each Pass Through
Trustee under the applicable Participation Agreement. 
 (e) Registration of Equipment Notes. The Company agrees that
all Equipment Notes issued pursuant to any Indenture to which an Aircraft shall have been subjected shall initially be registered in the name of the Subordination Agent on behalf of the applicable Pass Through Trustee (or, in the case of any
Additional Series Equipment Notes, on behalf of the Additional Series Pass Through Trustee with respect to the corresponding Additional Series Pass Through Certificates). 

(f) Postponement of Delivery and Funding. If, on the Funding Date for any Aircraft, the financing of such Aircraft as
contemplated hereunder shall not be consummated for whatever reason, the Company shall give the parties hereto and the Depositary prompt notice thereof. Promptly after the Company has identified (x) a new Funding Date on which such
Aircraft may be subjected to the financing as provided herein or (y) a Substitute Aircraft that may be subjected to the financing as provided herein in lieu of such Aircraft and the Funding Date for such Substitute Aircraft (in each
case, all on and subject to the terms and conditions hereof and of the applicable Financing Agreements), the Company shall give the parties hereto and the Depositary a substitute Funding Notice specifying such new Funding Date for such Aircraft or
the Funding Date for such Substitute Aircraft. Upon receipt of any such substitute Funding Notice, each Pass Through Trustee shall comply with its obligations under Section 7.01 of the applicable Trust Supplement and
thereafter the financing of such Aircraft, as specified in such substitute Funding Notice, shall take place on the re-scheduled Funding Date therefor (all on and subject to the terms and conditions hereof and
of the applicable Financing Agreements) unless further postponed as provided herein. 
 (g) Delivery of Aircraft from
Manufacturer. Anything in this Section 1 or elsewhere to the contrary notwithstanding, the Company shall have the right to accept delivery of any Aircraft from the Manufacturer under the Aircraft Purchase Agreement
prior to the Funding Date for such Aircraft by using the Company’s own funds or otherwise and to specify a Funding Date for such Aircraft that, in the case of any Aircraft that is not a Substitute Aircraft, shall be no later than 90 days after
the delivery of such Aircraft to the Company by the Manufacturer under the Aircraft Purchase Agreement 

  

					
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and, in each case, shall be no later than the Cut-Off Date and otherwise complying with the provisions of Section 1(b) hereof.

 (h) Substitute Aircraft. If the date of delivery from the Manufacturer for any Eligible Aircraft is delayed more
than 30 days beyond the last day of the month set forth opposite such Eligible Aircraft under the heading “Scheduled Delivery Month” in Schedule I hereto, the Company may substitute therefor an aircraft not included in the Eligible
Aircraft, but meeting the following conditions (each, a “Substitute Aircraft” and, collectively, the “Substitute Aircraft”): (i) a Substitute Aircraft must be of the same model or an improved model as the
Eligible Aircraft being replaced and (ii) the Company shall obtain a Rating Agency Confirmation with respect to each Class of Certificates then rated by the Rating Agencies in connection with the replacement of any Eligible Aircraft
by a Substitute Aircraft. Upon the satisfaction of the conditions set forth above with respect to a Substitute Aircraft, the Eligible Aircraft it replaced shall cease to be subject to this Note Purchase Agreement and all rights and obligations of
the parties hereto concerning such Eligible Aircraft shall cease, and such Substitute Aircraft shall become, and thereafter be, subject to the terms and conditions of this Note Purchase Agreement to the same extent as such Eligible Aircraft. 

(i) No Liability for Failure to Purchase Equipment Notes. The Company shall have no liability for the failure of any
Pass Through Trustee to purchase Equipment Notes with respect to any Aircraft. 
 (j) Withdrawals Limited to Available
Deposits. Anything herein to the contrary notwithstanding, the Company shall not have the right, and shall not be entitled, at any time to request the issuance of Series AA Equipment Notes, Series A Equipment Notes or Series B Equipment Notes in
respect of the Aircraft to the Class AA Pass Through Trustee, Class A Pass Through Trustee or the Class B Pass Through Trustee, respectively, in an aggregate principal amount in excess of the amount of the Deposits then available for
withdrawal by the Escrow Agent under and in accordance with the provisions of the applicable Deposit Agreement. 
 (k)
Notice of Event of Loss. In the case of any Aircraft, if, prior to the date on which such Aircraft is subjected to a financing in the manner provided herein, an event has occurred and is continuing that constitutes an Event of Loss (as
defined in the Indenture Form) with respect to such Aircraft or that would constitute such an Event of Loss but for the requirement that notice be given or time elapse or both, the Company will as promptly as practicable (and, in any event, within
15 days after the occurrence of the relevant Event of Loss) give notice of such event to each Pass Through Trustee and the Subordination Agent and instruct each Pass Through Trustee, and each Pass Through Trustee agrees, to execute and deliver to
the applicable Escrow Agent a duly completed Withdrawal Certificate (as defined in the applicable Escrow and Paying Agent 

  

					
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Agreement) together with a relevant Notice of Event of Loss Withdrawal (as defined in the applicable Escrow and Paying Agent Agreement). 

SECTION 2. Conditions Precedent. The obligation of each of the Pass Through Trustees to enter into, and to cause the Subordination
Agent to enter into, a Participation Agreement relating to any Aircraft as directed pursuant to a Funding Notice and to perform its obligations thereunder is subject to satisfaction of the following conditions: 

(a) no Triggering Event shall have occurred; 

(b) subject to Section 1(d)(iv) and the last paragraph of Section 1(d), the
Company shall have delivered a certificate to each Pass Through Trustee and each Liquidity Provider stating that (i) such Participation Agreement and the other Financing Agreements to be entered into pursuant to such Participation
Agreement comply with the Required Terms and (ii) if any substantive modifications of such Financing Agreements from the forms of Financing Agreements attached to this Note Purchase Agreement have been made, (x) such
substantive modifications do not materially and adversely affect the holders of the Class AA Certificates, the holders of the Class A Certificates, the holders of the Class B Certificates or any Liquidity Provider and
(y) if required pursuant to Section 1(d)(ii), the Company has obtained from each Rating Agency a Rating Agency Confirmation with respect to each Class of Certificates then rated by such Rating Agency with
respect to such modifications, and such certification shall be true and correct; and 
 (c) such Pass Through Trustee shall
not have received any notice pursuant to Section 1(k) of a relevant event with respect to such Aircraft. 
 Anything herein to the
contrary notwithstanding, the obligation of each Pass Through Trustee to purchase Equipment Notes hereunder shall terminate on the Cut-Off Date. 

SECTION 3. Representations and Warranties. 

(a) Representations and Warranties of the Company. The Company represents and warrants that: 

(i) Due Incorporation; Good Standing; Corporate Power; Etc. The Company is duly incorporated, validly existing and in
good standing under the laws of the State of Delaware and is a Citizen of the United States and has the full corporate power, authority and legal right under the laws of the State of Delaware to execute and deliver this Note Purchase Agreement and
each Financing Agreement to which it will be a party and to carry out the obligations of the Company under this Note Purchase Agreement and each Financing 

  

					
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Agreement to which it will be a party; 
 (ii) Authorization; No
Conflicts. The execution and delivery by the Company of this Note Purchase Agreement and the performance by the Company of its obligations under this Note Purchase Agreement have been duly authorized by the Company and will not violate its
certificate of incorporation or by-laws or the provisions of any indenture, mortgage, contract or other agreement to which it is a party or by which it is bound; and 

(iii) Enforceability. This Note Purchase Agreement constitutes the legal, valid and binding obligation of the Company,
enforceable against it in accordance with its terms, except as the same may be limited by applicable bankruptcy, insolvency, reorganization, moratorium or similar laws affecting the rights of creditors generally and by general principles of equity,
whether considered in a proceeding at law or in equity. 
 (b) Representations and Warranties of WTNA. WTNA represents
and warrants that: 
 (i) Due Incorporation; Good Standing; Corporate Power; Etc. WTNA is a national banking
association duly organized and validly existing in good standing under the laws of the United States and is a Citizen of the United States and has the full corporate power, authority and legal right under the laws of the United States and of the
state of the United States in which it is located and pertaining to its banking, trust and fiduciary powers to execute and deliver this Note Purchase Agreement and each Financing Agreement to which it will be a party and to carry out the obligations
of WTNA, in its capacity as Subordination Agent, Pass Through Trustee or Paying Agent, as the case may be, under this Note Purchase Agreement and each Financing Agreement to which it will be a party; 

(ii) Due Authorization; No Conflicts. The execution and delivery by WTNA, in its capacity as Subordination Agent, Pass
Through Trustee or Paying Agent, as the case may be, of this Note Purchase Agreement and the performance by WTNA, in its capacity as Subordination Agent, Pass Through Trustee or Paying Agent, as the case may be, of its obligations under this Note
Purchase Agreement have been duly authorized by WTNA, in its capacity as Subordination Agent, Pass Through Trustee or Paying Agent, as the case may be, and will not violate its articles of association or
by-laws or the provisions of any indenture, mortgage, contract or other agreement to which it is a party or by which it is bound; and 

  

					
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 (iii) Enforceability. This Note Purchase Agreement constitutes the legal,
valid and binding obligations of WTNA, in its capacity as Subordination Agent, Pass Through Trustee or Paying Agent, as the case may be, enforceable against it in accordance with its terms, except as the same may be limited by applicable bankruptcy,
insolvency, reorganization, moratorium or similar laws affecting the rights of creditors generally and by general principles of equity, whether considered in a proceeding at law or in equity. 

(c) Representations and Warranties of the Pass Through Trustee. Each Pass Through Trustee hereby confirms to each of the
other parties hereto that its representations and warranties set forth in Section 7.15 of the Basic Pass Through Trust Agreement and Section 7.04 of the applicable Trust Supplement are true and
correct as of the date hereof. 
 (d) Representations and Warranties of the Subordination Agent. The Subordination
Agent represents and warrants that: 
 (i) Due Incorporation; Good Standing; Corporate Power; Etc. The Subordination
Agent is a national banking association duly organized and validly existing in good standing under the laws of the United States, and has the full corporate power, authority and legal right under the laws of the United States and of the state of the
United States in which it is located and pertaining to its banking, trust and fiduciary powers to execute and deliver this Note Purchase Agreement and each Financing Agreement to which it is or will be a party and to perform its obligations under
this Note Purchase Agreement and each Financing Agreement to which it is or will be a party; 
 (ii) Due Authorization;
Enforceability. This Note Purchase Agreement has been duly authorized, executed and delivered by the Subordination Agent; this Note Purchase Agreement constitutes the legal, valid and binding obligations of the Subordination Agent enforceable
against it in accordance with its terms, except as the same may be limited by applicable bankruptcy, insolvency, reorganization, moratorium or similar laws affecting the rights of creditors generally and by general principles of equity, whether
considered in a proceeding at law or in equity; 
 (iii) Compliance with Laws; No Conflicts. None of the execution,
delivery and performance by the Subordination Agent of this Note Purchase Agreement contravenes any law, rule or regulation of the state of the United States in which it is located or any United States governmental authority or agency regulating the
Subordination Agent’s banking, trust or fiduciary powers or any judgment or order applicable to or binding on the Subordination Agent or 

  

					
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contravenes the Subordination Agent’s articles of association or by-laws or results in any breach of, or constitute a default under, any agreement or
instrument to which the Subordination Agent is a party or by which it or any of its properties may be bound; 
 (iv) No
Governmental Consents. Neither the execution and delivery by the Subordination Agent of this Note Purchase Agreement nor the consummation by the Subordination Agent of any of the transactions contemplated hereby requires the consent or approval
of, the giving of notice to, the registration with, or the taking of any other action with respect to, any governmental authority or agency of the state of the United States in which it is located or any federal governmental authority or agency
regulating the Subordination Agent’s banking, trust or fiduciary powers; 
 (v) Certain Tax Matters. There are no
Taxes payable by the Subordination Agent imposed by any state of the United States in which it is located or any political subdivision or taxing authority thereof in connection with the execution, delivery and performance by the Subordination Agent
of this Note Purchase Agreement or the Intercreditor Agreement (other than franchise or other taxes based on or measured by any fees or compensation received by the Subordination Agent for services rendered in connection with the transactions
contemplated by the Intercreditor Agreement or any of the Liquidity Facilities), and there are no Taxes payable by the Subordination Agent imposed by any state of the United States in which it is located or any political subdivision thereof in
connection with the acquisition, possession or ownership by the Subordination Agent of any of the Equipment Notes (other than franchise or other taxes based on or measured by any fees or compensation received by the Subordination Agent for services
rendered in connection with the transactions contemplated by the Intercreditor Agreement or any of the Liquidity Facilities); and 

(vi) No Proceedings. There are no pending or threatened actions or proceedings against the Subordination Agent before
any court or administrative agency which individually or in the aggregate, if determined adversely to it, would materially adversely affect the ability of the Subordination Agent to perform its obligations under this Note Purchase Agreement. 

(e) Representations and Warranties of the Escrow Agent. The Escrow Agent represents and warrants that: 

(i) Due Incorporation; Good Standing; Corporate Power; Etc. The Escrow Agent is a Delaware trust company duly
incorporated, validly existing and in good 

  

					
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standing under the laws of the State of Delaware and has the full corporate power, authority and legal right under the laws of the State of Delaware pertaining to its trust and fiduciary powers
to execute and deliver this Note Purchase Agreement, each Deposit Agreement and each Escrow and Paying Agent Agreement (collectively, the “Escrow Agent Agreements”) and to carry out the obligations of the Escrow Agent under each of
the Escrow Agent Agreements; 
 (ii) Due Authorization; No Conflicts. The execution and delivery by the Escrow Agent
of each of the Escrow Agent Agreements and the performance by the Escrow Agent of its obligations hereunder and thereunder have been duly authorized by the Escrow Agent and will not violate its charter or
by-laws or the provisions of any indenture, mortgage, contract or other agreement to which it is a party or by which it is bound; and 

(iii) Enforceability. Each of the Escrow Agent Agreements constitutes the legal, valid and binding obligations of the
Escrow Agent enforceable against it in accordance with its terms, except as the same may be limited by applicable bankruptcy, insolvency, reorganization, moratorium or similar laws affecting the rights of creditors generally and by general
principles of equity, whether considered in a proceeding at law or in equity. 
 (f) Representations and Warranties of the
Paying Agent. The Paying Agent represents and warrants that: 
 (i) Due Incorporation; Good Standing; Corporate Power;
Etc. The Paying Agent is a national banking association duly organized and validly existing in good standing under the laws of the United States, and has the full corporate power, authority and legal right under the laws of the United States and
of the state in which it is located and pertaining to its banking, trust and fiduciary powers to execute and deliver this Note Purchase Agreement and each Escrow and Paying Agent Agreement (collectively, the “Paying Agent
Agreements”) and to carry out the obligations of the Paying Agent under each of the Paying Agent Agreements; 
 (ii)
Due Authorization; No Conflicts. The execution and delivery by the Paying Agent of each of the Paying Agent Agreements and the performance by the Paying Agent of its obligations hereunder and thereunder have been duly authorized by the Paying
Agent and will not violate its articles of association or by-laws or the provisions of any indenture, mortgage, contract or other agreement to which it is a party or by which it is bound; and 

  

					
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 (iii) Enforceability. Each of the Paying Agent Agreements constitutes the
legal, valid and binding obligations of the Paying Agent enforceable against it in accordance with its terms, except as the same may be limited by applicable bankruptcy, insolvency, reorganization, moratorium or similar laws affecting the rights of
creditors generally and by general principles of equity, whether considered in a proceeding at law or in equity. 
 SECTION 4.
Covenants. 
 (a) Covenants of the Company. 

(i) Maintenance of Corporate Existence. Subject to, and except as contemplated by,
Section 4(a)(iii) of this Note Purchase Agreement, the Company shall at all times maintain its corporate existence. 

(ii) Maintenance of Status as Certificated Air Carrier; Section 1110. The Company shall, for as long
as and to the extent required under Section 1110 in order that the Loan Trustee shall be entitled to any of the benefits of Section 1110 with respect to the Aircraft, remain a Certificated Air Carrier. 

(iii) Merger, Consolidation, Acquisition of the Company. 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 the Person formed by such consolidation or into which the Company is merged or the Person that acquires by conveyance, transfer or lease
substantially all of the assets of the Company as an entirety shall execute and deliver to the Pass Through Trustees, the Subordination Agent, the Escrow Agent and the Paying Agent an agreement containing the express assumption by such successor
Person of the due and punctual performance and observance of each covenant and condition of this Note Purchase Agreement to be performed or observed by the Company. Upon any such consolidation or merger, or any conveyance, transfer or lease of
substantially all of the assets of the Company as an entirety, 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 this Note Purchase Agreement with the same effect as if such successor Person had been named as the Company herein. 

  

					
		  	13	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 (iv) Notice of Occurrence of Cut-Off
Date. The Company agrees to provide written notice to each of the parties hereto of the occurrence of the Cut-Off Date no later than one Business Day after the date thereof. 

(v) Refinancing of Equipment Notes; Additional Series Equipment Notes. The Company shall have the option, at any time
and from time to time, (A) to redeem any Series A Equipment Notes or Series B Equipment Notes (or any series of Additional Series Equipment Notes) with respect to all of the Aircraft for which Series A Equipment Notes or Series B
Equipment Notes (or such series of Additional Series Equipment Notes) are at the time outstanding and issue, with respect to any or all of the Aircraft, new Equipment Notes with the same series designation as, but with terms that may be the same as
or different from those of, the redeemed Equipment Notes, (B) to issue one or more series of Additional Series Equipment Notes with respect to any or all of the Aircraft under any Indenture (including, for the avoidance of doubt,
multiple issuances at the same or different times resulting in more than one series of Additional Series Equipment Notes being outstanding at any time), and (C) following the payment in full of Series A Equipment Notes or Series B
Equipment Notes (or any series of Additional Series Equipment Notes) with respect to all of the Aircraft for which Series A Equipment Notes or Series B Equipment Notes (or such series of Additional Series Equipment Notes) are at the time
outstanding, to issue, with respect to any or all of the Aircraft, new Equipment Notes with the same series designation as, but with terms that may be the same as or different from those of, such Equipment Notes that have been paid in full;
provided that the Company shall have obtained a Rating Agency Confirmation with respect to any Class of Certificates then rated by such Rating Agency that will remain outstanding in connection with such issuance, such redemption and
issuance or such payment and issuance, as applicable. Any such issuance, such redemption and issuance or such payment and issuance, as applicable, shall be subject to the terms of Section 8.01(c) or 8.01(d), as
applicable, of the Intercreditor Agreement. If any such new Series A Equipment Notes or new Series B Equipment Notes or Additional Series Equipment Notes or new Additional Series Equipment Notes are to be so issued, the pass through trustee of the
pass through trust that acquires such new Series A Equipment Notes or new Series B Equipment Notes or Additional Series Equipment Notes or new Additional Series Equipment Notes, as applicable, shall execute and deliver an instrument (including,
without limitation, a joinder agreement) by which such pass through trustee becomes a party hereto, and each of the parties hereto agrees, at the Company’s request, to enter into any amendments to (or any amendment and restatement of) this Note
Purchase Agreement (including, without limitation, any modifications of the Indenture Form and the Participation Agreement Form) and any other Operative Agreements as may be necessary or desirable to give effect to such issuance, such redemption and
issuance or such payment and issuance of any such new Series A Equipment Notes or new Series B Equipment Notes or Additional Series Equipment Notes or new 

  

					
		  	14	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 
Additional Series Equipment Notes, as applicable, and the issuance of pass through certificates by any pass through trust that acquires any such new Series A Equipment Notes or new Series B
Equipment Notes or Additional Series Equipment Notes or new Additional Series Equipment Notes, as applicable, and to make changes relating to any of the foregoing (including, without limitation, to provide for any prefunding mechanism in connection
therewith) and to provide for any credit support for any pass through certificates relating to any such new Series A Equipment Notes or new Series B Equipment Notes or Additional Series Equipment Notes or new Additional Series Equipment Notes
(including, without limitation, to provide for payment of fees, interest, expenses, reimbursement of advances and other obligations arising from such credit support (including, without limitation, to specify such credit support as a “Liquidity
Facility” and the provider of any such credit support as a “Liquidity Provider” and, if such Liquidity Facility is to be comprised of more than one instrument, to incorporate appropriate mechanics for multiple Liquidity Facilities for
a single Pass Through Trust)). 
 (vi) Certain Reports to Subordination Agent. Promptly after the occurrence of a
Triggering Event or an Indenture Event of Default resulting from the failure of the Company to make payments on any Equipment Note and on every Regular Distribution Date while the Triggering Event or such Indenture Event of Default shall be
continuing, the Company shall, at the Subordination Agent’s request from time to time but in any event no more frequently than once every three months, provide to the Subordination Agent a statement setting forth the following information with
respect to each Aircraft then subject to the lien of an Indenture: (A) whether the Aircraft are currently in service or parked in storage, (B) the maintenance status of the Aircraft, and (C) the location of the
Engines (as defined in the respective Indentures to which such Aircraft are subject). As used in this Section 4(a)(vi), the terms “Triggering Event”, “Indenture Event of Default” and “Regular
Distribution Date” have the respective meanings set forth in the Intercreditor Agreement. 
 (b) Covenants by
WTNA. 
 (i) Status as Citizen of the United States. WTNA, in its individual capacity, covenants with each of the
other parties to this Note Purchase Agreement that it will, immediately upon obtaining knowledge of any facts that would cast doubt upon its continuing status as a Citizen of the United States and promptly upon public disclosure of negotiations in
respect of any transaction which would or might adversely affect such status, notify in writing all parties hereto of all relevant matters in connection therewith. Upon WTNA giving any such notice, WTNA shall, subject to
Section 8.01 of any Indenture then entered into, resign as Loan Trustee in respect of such Indenture. 

  

					
		  	15	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 (ii) Situs of Activity. Except with the consent of the Company, which
shall not be unreasonably withheld, WTNA will act as Pass Through Trustee and Subordination Agent solely through its offices within the State of Delaware, except for such services as may be performed for it by independent agents in the ordinary
course of business, but not directly by it, in other states. 
 (c) [Reserved]. 

(d) Covenants by the Pass Through Trustees. 

(i) Tax Forms of the Pass Through Trustees. On or prior to the Issuance Date, each Pass Through Trustee shall have
provided a completed and executed copy of IRS Form W-9 to each of the Company, the Subordination Agent, the Liquidity Providers, the Escrow Agent, the Paying Agent and the Depositary. 

(ii) Tax Forms of the Pass Through Trustee of New or Additional Series Pass Through Trust. If any new Equipment Notes or
Additional Series Equipment Notes shall be issued under any Indenture as provided in Section 4(a)(v), on or prior to the date such new Equipment Notes or Additional Series Equipment Notes, as applicable, shall have been so
issued, the pass through trustee of the pass through trust that acquires such new Equipment Notes or the Additional Series Pass Through Trustee, as applicable, shall have provided a completed and executed copy of IRS Form W-9 to each of the Company and the Subordination Agent and, if a liquidity facility shall have been provided with respect to such new pass through trust or Additional Series Pass Through Trust, to the provider of
such liquidity facility and, if such new Equipment Notes or Additional Series Equipment Notes shall be issued on or prior to the Delivery Period Termination Date, to the Escrow Agent, the Paying Agent and the Depositary. 

SECTION 5. Depositary Downgrade and Replacement of Depositary. 

(a) Depositary Downgrade and Option to Replace. In the case of either (i) with respect to
(w) the Class AA Certificates, if the Depositary’s Long-Term Rating is downgraded by Standard & Poor’s below AA- or, if the Depositary is a national bank holding the
Deposits for the Class AA Certificates in fiduciary accounts pursuant to its trust powers, below A-, or (x) the Class A Certificates, if the Depositary’s Long Term Rating is
downgraded by Standard & Poor’s below A, or (y) the Class B Certificates, if the Depositary’s Long-Term Rating is downgraded by Standard & Poor’s below BBB- or
(z) any Class of Certificates, if the Depositary is downgraded by Fitch such that, following such downgrade by Fitch, the Depositary does not have either a Long-Term 

  

					
		  	16	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 
Rating of at least BBB issued by Fitch or a Short-Term Rating of at least F-2 issued by Fitch (each such minimum Long-Term Rating or Short-Term Rating for
each Class of Certificates, a “Depositary Threshold Rating” for the applicable Rating Agency for such Class of Certificates), and the Company shall not have received a Rating Agency Confirmation from the applicable Rating
Agency with respect to any Class of Certificates related to the Depositary downgraded by such Rating Agency, or (ii) the Company, in its sole discretion, gives written notice to the Depositary of any Class of Certificates of
the Company’s election that the Depositary for such Class of Certificates be replaced, then, the Company shall, within 35 days after such event occurring, cause the Depositary for such Class of Certificates to be replaced with a
depositary bank meeting the terms and on the conditions set forth in Section 5(c) (a “Replacement Depositary”). 

(b) [Reserved.] 

(c) Terms and Preconditions for Replacement of Depositary. 

(i) Minimum Credit Ratings; Confirmation from Ratings Agency. Any Replacement Depositary for any Class of
Certificates may either be (x) one that meets the Depositary Threshold Rating for such Class of Certificates for each Rating Agency or (y) one that does not meet the Depositary Threshold Rating for such Class of
Certificates for each Rating Agency, so long as, in the case of either of the immediately preceding clauses (x) and (y), the Company shall have obtained a Rating Agency Confirmation with respect to such Class of Certificates then rated by
such Rating Agency in connection with the replacement of the Depositary with such Replacement Depositary. 
 (ii) Certain
Fees and Expenses. The Company shall pay all fees, expenses and other amounts then owing to the replaced Depositary. The Company shall also pay (x) any up-front fee of the Replacement
Depositary and (y) all out-of-pocket expenses (including reasonable fees and expenses of legal counsel) of the parties hereto (including, without limitation,
all amounts payable to the Rating Agencies) incurred in connection with such replacement. 
 (iii) Replacement Deposit
Agreements; Opinions and Other Closing Requirements. The Company shall cause the Replacement Depositary to enter into a Replacement Deposit Agreement for the applicable Class of Certificates with the Escrow Agent (and the Escrow Agent
agrees to enter into any such Replacement Deposit Agreement upon request of the Company) and shall cause the Replacement Depositary to deliver to the Company and each Rating Agency legal opinions and other closing documentation substantially similar
in scope and substance as those 

  

					
		  	17	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 
that were delivered by the Depositary being replaced in connection with the execution and delivery of the Deposit Agreement being replaced. 

(d) Withdrawal Certificate and Notice of Replacement Withdrawal. Upon satisfaction of the conditions set forth in
Section 5(c), the Company shall instruct each applicable Pass Through Trustee, and each such Pass Through Trustee agrees, to execute and deliver to the applicable Escrow Agent a duly completed Withdrawal Certificate (as
defined in the Escrow and Paying Agent Agreements) together with a Notice of Replacement Withdrawal (as defined in the Escrow and Paying Agent Agreements). 

(e) Amendments to Documents. Each of the parties hereto agrees, at the Company’s request, to enter into any
amendments to this Note Purchase Agreement, the applicable Escrow and Paying Agent Agreements and any other Operative Agreements as may be necessary or desirable to give effect to the replacement of the Depositary for any Class of Certificates
with the Replacement Depositary therefor and the replacement of the applicable Deposit Agreement with a Replacement Deposit Agreement. 

(f) Effect of Replacement. Until the execution and delivery of a Replacement Deposit Agreement for a Class of
Certificates, the applicable Deposit Agreement for such Class of Certificates with the Depositary being replaced shall remain in full force and effect. Upon the execution and delivery of a Replacement Deposit Agreement for such Class of
Certificates, the Replacement Depositary such Class of Certificates shall be deemed to be the Depositary for such Class of Certificates with all of the rights and obligations of the Depositary for such Class of Certificates hereunder
and under the other Operative Agreements and the Replacement Deposit Agreement shall be deemed to be the applicable Deposit Agreement for such Class of Certificates hereunder and under the other Operative Agreements. 

SECTION 6. Notices. Unless otherwise expressly specified or permitted by the terms hereof, all notices, requests, demands,
authorizations, directions, consents or waivers required or permitted by the terms and provisions of this Note Purchase Agreement shall be in English and in writing, and given by United States registered or certified mail, return receipt requested,
overnight courier service or facsimile, and any such notice shall be effective when received (or, if delivered by facsimile, upon completion of transmission and confirmation by the sender (by a telephone call to a representative of the recipient or
by machine confirmation) that such transmission was received) to the relevant party hereto at the address or facsimile number set forth below the signature of such party at the foot of this Note Purchase Agreement or to such other address or
facsimile number as such party may hereafter specify by notice to the other parties. 

  

					
		  	18	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 SECTION 7. Expenses. So long as no Equipment Notes have been issued in respect of any
Aircraft, the Company agrees to pay: 
 (a) Certain Liquidity Provider Fees. To the Subordination Agent when due an
amount or amounts equal to the fees payable to the applicable Liquidity Provider under Section 2.03 of each Liquidity Facility and under the related Fee Letter (as defined in the Intercreditor Agreement); 

(b) Under the Liquidity Facilities. To the Subordination Agent when due (i) the amount equal to interest on
any Downgrade Advance (other than any Applied Downgrade Advance) payable under Section 3.07 of each Liquidity Facility minus Investment Earnings while such Downgrade Advance shall be outstanding and (ii) any
other amounts owed to the applicable Liquidity Provider by the Subordination Agent as borrower under each Liquidity Facility (other than amounts due as repayment of advances thereunder or as interest on such advances), except to the extent payable
pursuant to clause (i) of this sentence; 
 (c) Under the Pass Through Trust Agreements. All compensation and
reimbursement of expenses, disbursements and advances payable by the Company under the Pass Through Trust Agreements; 
 (d)
Under the Intercreditor Agreement. All compensation and reimbursement of expenses and disbursements payable to the Subordination Agent under the Intercreditor Agreement except with respect to any income or franchise taxes incurred by the
Subordination Agent in connection with the transactions contemplated by the Intercreditor Agreement; and 
 (e) Escrow
Agent and Paying Agent. In the event the Company requests any amendment to any Operative Agreement, all reasonable fees and expenses (including, without limitation, fees and disbursements of counsel) of the Escrow Agent and/or the Paying Agent
in connection therewith. 
 For purposes of this Section 7, the terms “Applied Downgrade Advance”, “Downgrade
Advance” and “Investment Earnings” shall have the meanings specified in each Liquidity Facility. 
 SECTION 8.
Further Assurances. Each party hereto shall duly execute, acknowledge and deliver, or shall cause to be executed, acknowledged and delivered, all such further agreements, instruments, certificates or documents, and shall do and cause to be
done 

  

					
		  	19	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 
such further acts and things, in any case, as any other party hereto shall reasonably request in connection with its administration of, or to carry out more effectually the purposes of, or to
better assure and confirm unto it the rights and benefits to be provided under, this Note Purchase Agreement. 
 SECTION 9.
Miscellaneous. 
 (a) Survival of Representations and Covenants. The representations and warranties herein of
the Company, the Subordination Agent, the Escrow Agent, the Paying Agent and each Pass Through Trustee shall survive the expiration or other termination of this Note Purchase Agreement. The rights and obligations of each of the parties hereto set
forth in Section 4(a)(v), Section 4(b) and Section 5 of this Note Purchase Agreement shall survive the expiration or other termination of this Note Purchase Agreement. 

(b) Counterparts; Amendments; Effect of Headings; Successors and Assigns. This Note Purchase Agreement may be executed
in any number of counterparts (and each of the parties hereto shall not be required to execute the same counterpart). Each counterpart of this Note Purchase Agreement, including a signature page executed by each of the parties hereto, shall be an
original counterpart of this Note Purchase Agreement, but all of such counterparts together shall constitute one instrument. Neither this Note Purchase Agreement nor any of the terms hereof may be terminated, amended, supplemented, waived or
modified orally, but only by an instrument in writing signed by the party against which the enforcement of the termination, amendment, supplement, waiver or modification is sought. The Table of Contents to this Note Purchase Agreement and the
headings of the various Sections and Subsections of this Note Purchase Agreement are for convenience of reference only and shall not modify, define, expand or limit any of the terms or provisions hereof. The terms of this Note Purchase Agreement
shall be binding upon, and shall inure to the benefit of, the Company and its successors and permitted assigns, the Pass Through Trustee and its successors as Pass Through Trustee (and any additional trustee appointed) under any of the Pass Through
Trust Agreements, the Escrow Agent and its successors as Escrow Agent under the Escrow and Paying Agent Agreements, the Paying Agent and its successors as Paying Agent under the Escrow and Paying Agent Agreements and the Subordination Agent and its
successors as Subordination Agent under the Intercreditor Agreement. 
 (c) Benefits of Agreement. This Note Purchase
Agreement is not intended to, and shall not, provide any Person not a party hereto (other than the Underwriters, each of the beneficiaries of Section 7 hereof, each Liquidity Provider as a beneficiary of
Section 2(b) hereof and the Depositary as a beneficiary of Section 5 hereof) with any rights of any nature whatsoever against any of the parties hereto, and no Person not a party hereto (other than
the Underwriters, each of the beneficiaries of Section 7 hereof, each Liquidity 

  

					
		  	20	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 
Provider as a beneficiary of Section 2(b) hereof and the Depositary as a beneficiary of Section 5 hereof) shall have any right, power or
privilege in respect of, or have any benefit or interest arising out of, this Note Purchase Agreement. To the extent that this Note Purchase Agreement expressly confers upon, gives or grants any right, power, privilege, benefit, interest, remedy or
claim to any of the beneficiaries of Section 7 hereof (including, but not limited to, rights, powers, privileges, benefits, interests, remedies and claims under Section 7), to a Liquidity Provider
as a beneficiary of Section 2(b) hereof or to the Depositary with respect to Section 5 hereof, each such party is hereby recognized as a third party beneficiary hereunder and may enforce any such
right, power, privilege, benefit, interest, remedy or claim. 
 SECTION 10. Governing Law. THIS NOTE PURCHASE 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. THIS NOTE PURCHASE AGREEMENT IS BEING DELIVERED IN THE STATE OF NEW YORK. 

SECTION 11. 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 (a) 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 Note Purchase 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 (b) 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 Note Purchase Agreement or the subject matter hereof or any of
the transactions contemplated hereby may not be enforced in or by such courts. 
 [Signature Pages Follow.] 

  

					
		  	21	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 IN WITNESS WHEREOF, the parties hereto have caused this Note Purchase Agreement to be duly
executed by their respective officers thereunto duly authorized as of the day and year first above written. 
  

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

		 	Name:	 	Edward Christie
		 	Title:	 	Executive Vice President and
		 		 	Chief Financial Officer
		 	Address:	 	2800 Executive Way
		 		 	Miramar, Florida 33025
		 		 	Ref.: Spirit Airlines 2017-1 EETC
		 		 	Attention: Legal and Treasury Dept.
		 		 	Telephone: (954) 447-7914
		 		 	Facsimile: (954) 447-7854

 Signature Page 

  

					
		  		  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 
					
	WILMINGTON TRUST, NATIONAL ASSOCIATION,
	not in its individual capacity, except as otherwise provided herein, but solely as Pass Through Trustee
		
	By:	 	 /s/ Jacqueline Solone

		 	Name:	 	Jacqueline Solone
		 	Title:	 	Vice President
		 	Address:	 	1100 North Market Street
		 		 	Wilmington, Delaware 19890-1605
		 		 	Ref: Spirit Airlines 2017-1
		 		 	Attn: Corporate Trust Administration
		 		 	Telephone: (302) 636-6387
		 		 	Telecopier: (302) 636-4140
	
	WILIMINGTON TRUST, NATIONAL ASSOCIATION,
	not in its individual capacity, except as otherwise provided herein, but solely as Subordination Agent
		
	By:	 	 /s/ Jacqueline Solone

		 	Name:	 	Jacqueline Solone
		 	Title:	 	Vice President
		 	Address:	 	1100 North Market Street
		 		 	Wilmington, Delaware 19890-1605
		 		 	Ref: Spirit Airlines 2017-1
		 		 	Attn: Corporate Trust Administration
		 		 	Telephone: (302) 636-6387
		 		 	Telecopier: (302) 636-4140

 Signature Page 

  

					
		  		  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 
					
	WILMINGTON TRUST COMPANY, not in its individual capacity, except as otherwise provided herein, but solely as Escrow Agent
		
	By:	 	 /s/ Jacqueline Solone

		 	Name:	 	Jacqueline Solone
		 	Title:	 	Vice President
		 	Address:	 	1100 North Market Street
		 		 	Wilmington, Delaware 19890-1605
		 		 	Ref: Spirit Airlines 2017-1
		 		 	Attn: Corporate Trust Administration
		 		 	Telephone: (302) 636-6387
		 		 	Telecopier: (302) 636-4140
	
	WILMINGTON TRUST, NATIONAL ASSOCIATION, not in its individual capacity, except as otherwise provided herein, but solely as Paying Agent
		
	By:	 	 /s/ Jacqueline Solone

		 	Name:	 	Jacqueline Solone
		 	Title:	 	Vice President
		 	Address:	 	1100 North Market Street
		 		 	Wilmington, Delaware 19890-1605
		 		 	Ref: Spirit Airlines 2017-1
		 		 	Attn: Corporate Trust Administration
		 		 	Telephone: (302) 636-6387
		 		 	Telecopier: (302) 636-4140

 Signature Page 

  

					
		  		  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 SCHEDULE I to 

NOTE PURCHASE AGREEMENT 

AIRCRAFT 
  

															
	 No.
	  	 Expected

U.S.
 Registration

No.
	  	 Airframe
Manufacturer
	  	
Expected Airframe
Model (including
generic manufacturer
and model)
	  	 Expected
Airframe

MSN
	  	 Engine
Manufacturer
	  	 Expected Engine
Model

(including generic
manufacturer and
model)
	  	 Current Scheduled
Delivery Month

	1.	  	N651NK	  	Airbus	  	 Airbus A320-200

(Airbus A320-200)
	  	8018	  	IAE International Aero Engines AG	  	 V2527-A5

V2500
	  	December 2017
	2.	  	N652NK	  	Airbus	  	 Airbus A320-200

(Airbus A320-200)
	  	8021	  	IAE International Aero Engines AG	  	 V2527-A5

V2500
	  	December 2017
	3.	  	N653NK	  	Airbus	  	 Airbus A320-200

(Airbus A320-200)
	  	8012	  	IAE International Aero Engines AG	  	 V2527-A5

V2500
	  	January 2018
	4.	  	N683NK	  	Airbus	  	 Airbus A321-200

(Airbus A321-200)
	  	8114	  	IAE International Aero Engines AG	  	 V2533-A5

V2500
	  	February 2018
	5.	  	N684NK	  	Airbus	  	 Airbus A321-200

(Airbus A321-200)
	  	8047	  	IAE International Aero Engines AG	  	 V2533-A5

V2500
	  	February 2018
	6.	  	N685NK	  	Airbus	  	 Airbus A321-200

(Airbus A321-200)
	  	8115	  	IAE International Aero Engines AG	  	 V2533-A5

V2500
	  	February 2018
	7.	  	N686NK	  	Airbus	  	 Airbus A321-200

(Airbus A321-200)
	  	8141	  	IAE International Aero Engines AG	  	 V2533-A5

V2500
	  	March 2018
	8.	  	N687NK	  	Airbus	  	 Airbus A321-200

(Airbus A321-200)
	  	8160	  	IAE International Aero Engines AG	  	 V2533-A5

V2500
	  	March 2018

  

					
		  	Sch. I - 1	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 SCHEDULE I to 

NOTE PURCHASE AGREEMENT 

(Cont’d) 
  

															
	 No.
	  	 Expected

U.S.
 Registration

No.
	  	 Airframe
Manufacturer
	  	
Expected Airframe
Model (including
generic manufacturer
and model)
	  	 Expected
Airframe

MSN
	  	 Engine
Manufacturer
	  	 Expected Engine
Model

(including generic
manufacturer and
model)
	  	 Current Scheduled
Delivery Month

	9.	  	N654NK	  	Airbus	  	 Airbus A320-200

(Airbus A320-200)
	  	8176	  	IAE International Aero Engines AG	  	 V2527-A5

V2500
	  	April 2018
	10.	  	N655NK	  	Airbus	  	 Airbus A320-200

(Airbus A320-200)
	  	TBD	  	IAE International Aero Engines AG	  	 V2527-A5

V2500
	  	August 2018
	11.	  	N656NK	  	Airbus	  	 Airbus A320-200

(Airbus A320-200)
	  	TBD	  	IAE International Aero Engines AG	  	 V2527-A5

V2500
	  	September 2018
	12.	  	N690NK	  	Airbus	  	 Airbus A320-200

(Airbus A320-200)
	  	TBD	  	IAE International Aero Engines AG	  	 V2527-A5

V2500
	  	October 2018

  

					
		  	Sch. I - 2	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 SCHEDULE II to 

NOTE PURCHASE AGREEMENT 

TRUST SUPPLEMENTS 
 Trust
Supplement No. 2017-1AA, dated as of the Issuance Date, between the Company and the Pass Through Trustee in respect of the Spirit Airlines Pass Through Trust, Series
2017-1AA. 
 Trust Supplement No. 2017-1A, dated as of the Issuance Date,
between the Company and the Pass Through Trustee in respect of the Spirit Airlines Pass Through Trust, Series 2017-1A. 

Trust Supplement No. 2017-1B, dated as of the Issuance Date, between the Company and the Pass Through Trustee in
respect of the Spirit Airlines Pass Through Trust, Series 2017-1B. 

  

					
		  	Sch. II - 1	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 SCHEDULE III to 

NOTE PURCHASE AGREEMENT 

REQUIRED TERMS 
 Equipment Notes

 Obligor:         The Company 

Maximum Aggregate Principal Amount: $420,500,000 
 The original
principal amount and amortization schedule of the Series AA Equipment Notes, Series A Equipment Notes and the Series B Equipment Notes issued with respect to an Aircraft shall be as set forth in the following tables (in the case of the amortization
schedules, expressed as percentages of the original principal amount of such Equipment Notes); provided that, in the case of any Early Delivery Aircraft, if any Equipment Note is issued with respect to such Early Delivery Aircraft on or after
August 15, 2018, (a) the original principal amount of such Equipment Note for such Early Delivery Aircraft will be reduced by the principal amortization installment scheduled for payment on August 15, 2018 thereon as set forth in this
Schedule III and the principal amortization schedule for such Equipment Note shall commence on the first scheduled principal payment date in such schedule occurring after the issuance of such Equipment Note and (b) the amortization percentages
set forth in this Schedule III under “Original Amortization Schedules” for such Early Delivery Aircraft shall be adjusted to reflect the amortization of such reduced principal amount on the remaining payment dates as set forth in this
Schedule III under “Adjusted Amortization Schedules – Early Delivery Aircraft” for such Early Delivery Aircraft: 

  

					
		  	Sch. III - 1	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 PRINCIPAL AMOUNTS OF EQUIPMENT NOTES 

I. EARLY DELIVERY AIRCRAFT 
  

																																													
	 Early
Delivery

Aircraft
	  	Initial
Series AA
Principal
Amount
Before 8/15/18	 	  	Initial
Series A
Principal
Amount Before
8/15/18	 	  	Initial
Series B
Principal
Amount Before
8/15/18	 	  	Total Initial
Principal
Amount Before
8/15/18	 	  	Scheduled
Series AA
Principal
Amortization
on 8/15/18	 	  	Scheduled
Series A
Principal
Amortization
on 8/15/18	 	  	Scheduled
Series B
Principal
Amortization
on 8/15/18	 	  	Initial
Series AA
Principal
Amount on or
after 8/15/18	 	  	Initial
Series A
Principal
Amount on or
after 8/15/18	 	  	Initial
Series B
Principal
Amount on or
after 8]/15/18	 	  	Total Initial
Principal on or
after 8/15/18	 
	 N651NK
	  	$	18,774,000.00	 	  	$	6,258,000.00	 	  	$	6,917,000.00	 	  	$	31,949,000.00	 	  	$	510,000.00	 	  	$	170,000.00	 	  	$	800,000.00	 	  	$	18,264,000.00	 	  	$	6,088,000.00	 	  	$	6,117,000.00	 	  	$	30,469,000.00	 
	 N652NK
	  	 	18,774,000.00	 	  	 	6,258,000.00	 	  	 	6,917,000.00	 	  	 	31,949,000.00	 	  	 	510,000.00	 	  	 	170,000.00	 	  	 	800,000.00	 	  	 	18,264,000.00	 	  	 	6,088,000.00	 	  	 	6,117,000.00	 	  	 	30,469,000.00	 
	 N653NK
	  	 	18,816,000.00	 	  	 	6,272,000.00	 	  	 	6,932,000.00	 	  	 	32,020,000.00	 	  	 	511,140.94	 	  	 	170,380.31	 	  	 	801,789.71	 	  	 	18,304,859.06	 	  	 	6,101,619.69	 	  	 	6,130,210.29	 	  	 	30,536,689.04	 
	 N683NK
	  	 	22,924,000.00	 	  	 	7,641,000.00	 	  	 	8,445,000.00	 	  	 	39,010,000.00	 	  	 	622,724.83	 	  	 	207,574.94	 	  	 	976,823.27	 	  	 	22,301,275.17	 	  	 	7,433,425.06	 	  	 	7,468,176.73	 	  	 	37,202,876.96	 
	 N684NK
	  	 	22,924,000.00	 	  	 	7,641,000.00	 	  	 	8,445,000.00	 	  	 	39,010,000.00	 	  	 	622,724.83	 	  	 	207,574.94	 	  	 	976,823.27	 	  	 	22,301,275.17	 	  	 	7,433,425.06	 	  	 	7,468,176.73	 	  	 	37,202,876.96	 
	 N685NK
	  	 	22,924,000.00	 	  	 	7,641,000.00	 	  	 	8,445,000.00	 	  	 	39,010,000.00	 	  	 	622,724.83	 	  	 	207,574.94	 	  	 	976,823.27	 	  	 	22,301,275.17	 	  	 	7,433,425.06	 	  	 	7,468,176.73	 	  	 	37,202,876.96	 
	 N686NK
	  	 	22,940,000.00	 	  	 	7,647,000.00	 	  	 	8,452,000.00	 	  	 	39,039,000.00	 	  	 	623,181.21	 	  	 	207,727.07	 	  	 	977,539.15	 	  	 	22,316,818.79	 	  	 	7,439,272.93	 	  	 	7,474,460.85	 	  	 	37,230,552.57	 
	 N687NK
	  	 	22,940,000.00	 	  	 	7,647,000.00	 	  	 	8,452,000.00	 	  	 	39,039,000.00	 	  	 	623,181.21	 	  	 	207,727.07	 	  	 	977,539.15	 	  	 	22,316,818.79	 	  	 	7,439,272.93	 	  	 	7,474,460.85	 	  	 	37,230,552.57	 

 II. AIRCRAFT OTHER THAN EARLY DELIVERY AIRCRAFT 

 

																	
	 Aircraft
	  	Series AA
Principal
Amount	 	  	Series A
Principal
Amount	 	  	Series B
Principal
Amount	 	  	Total	 
	 N654NK
	  	$	18,963,000.00	 	  	$	6,321,000.00	 	  	$	6,986,000.00	 	  	$	32,270,000.00	 
	 N655NK
	  	 	19,005,000.00	 	  	 	6,335,000.00	 	  	 	7,002,000.00	 	  	 	32,342,000.00	 
	 N656NK
	  	 	19,005,000.00	 	  	 	6,335,000.00	 	  	 	7,002,000.00	 	  	 	32,342,000.00	 
	 N690NK
	  	 	19,110,000.00	 	  	 	6,370,000.00	 	  	 	7,040,000.00	 	  	 	32,520,000.00	 

  

					
		  	Sch. III - 2	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 ORIGINAL AMORTIZATION SCHEDULES1

 Series AA Equipment Notes 

Airbus A320-200 

N651NK[**] 

					
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	2.71652285	% 
	 February 15, 2019
	  	 	2.71652285	% 
	 August 15, 2019
	  	 	2.71652285	% 
	 February 15, 2020
	  	 	2.71652285	% 
	 August 15, 2020
	  	 	2.71652285	% 
	 February 15, 2021
	  	 	2.71652285	% 
	 August 15, 2021
	  	 	2.71652285	% 
	 February 15, 2022
	  	 	2.71652285	% 
	 August 15, 2022
	  	 	2.71652285	% 
	 February 15, 2023
	  	 	2.71652285	% 
	 August 15, 2023
	  	 	2.71652285	% 
	 February 15, 2024
	  	 	2.45178955	% 
	 August 15, 2024
	  	 	2.45178960	% 
	 February 15, 2025
	  	 	2.45178955	% 
	 August 15, 2025
	  	 	2.45178960	% 
	 February 15, 2026
	  	 	2.45178955	% 
	 August 15, 2026
	  	 	2.45178960	% 
	 February 15, 2027
	  	 	2.45178955	% 
	 August 15, 2027
	  	 	2.45178955	% 
	 February 15, 2028
	  	 	2.45178960	% 
	 August 15, 2028
	  	 	2.45178955	% 
	 February 15, 2029
	  	 	2.45178960	% 
	 August 15, 2029
	  	 	2.45178955	% 
	 February 15, 2030
	  	 	40.69677378	% 

  

	1 	With respect to each Early Delivery Aircraft, the schedules for such Early Delivery Aircraft have been prepared assuming the Equipment Notes for such Early Delivery Aircraft have been issued before August 15, 2018.
Each Aircraft listed with ** is an Early Delivery Aircraft. 

  

					
		  	Sch. III - 3	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 Series A Equipment Notes 

Airbus A320-200 

N651NK[**] 

					
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	2.71652285	% 
	 February 15, 2019
	  	 	2.71652285	% 
	 August 15, 2019
	  	 	2.71652285	% 
	 February 15, 2020
	  	 	2.71652285	% 
	 August 15, 2020
	  	 	2.71652285	% 
	 February 15, 2021
	  	 	2.71652285	% 
	 August 15, 2021
	  	 	2.71652285	% 
	 February 15, 2022
	  	 	2.71652285	% 
	 August 15, 2022
	  	 	2.71652285	% 
	 February 15, 2023
	  	 	2.71652285	% 
	 August 15, 2023
	  	 	2.71652285	% 
	 February 15, 2024
	  	 	2.45178955	% 
	 August 15, 2024
	  	 	2.45178955	% 
	 February 15, 2025
	  	 	2.45178955	% 
	 August 15, 2025
	  	 	2.45178971	% 
	 February 15, 2026
	  	 	2.45178955	% 
	 August 15, 2026
	  	 	2.45178955	% 
	 February 15, 2027
	  	 	2.45178955	% 
	 August 15, 2027
	  	 	2.45178955	% 
	 February 15, 2028
	  	 	2.45178955	% 
	 August 15, 2028
	  	 	2.45178955	% 
	 February 15, 2029
	  	 	2.45178971	% 
	 August 15, 2029
	  	 	2.45178955	% 
	 February 15, 2030
	  	 	40.69677373	% 

  

					
		  	Sch. III-4	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 Series B Equipment Notes 

Airbus A320-200 

N651NK[**] 

					
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	11.56570768	% 
	 February 15, 2019
	  	 	6.26738572	% 
	 August 15, 2019
	  	 	6.26738557	% 
	 February 15, 2020
	  	 	4.53780960	% 
	 August 15, 2020
	  	 	4.53780945	% 
	 February 15, 2021
	  	 	2.52999855	% 
	 August 15, 2021
	  	 	2.52999855	% 
	 February 15, 2022
	  	 	2.52999855	% 
	 August 15, 2022
	  	 	1.80714182	% 
	 February 15, 2023
	  	 	1.80714182	% 
	 August 15, 2023
	  	 	1.80714182	% 
	 February 15, 2024
	  	 	1.80714182	% 
	 August 15, 2024
	  	 	1.80714182	% 
	 February 15, 2025
	  	 	1.80714182	% 
	 August 15, 2025
	  	 	1.80714182	% 
	 February 15, 2026
	  	 	46.58391355	% 
	 August 15, 2026
	  	 	0.00000000	% 
	 February 15, 2027
	  	 	0.00000000	% 
	 August 15, 2027
	  	 	0.00000000	% 
	 February 15, 2028
	  	 	0.00000000	% 
	 August 15, 2028
	  	 	0.00000000	% 
	 February 15, 2029
	  	 	0.00000000	% 
	 August 15, 2029
	  	 	0.00000000	% 
	 February 15, 2030
	  	 	0.00000000	% 

  

					
		  	Sch. III-5	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 Series AA Equipment Notes 

Airbus A320-200 

N652NK[**] 

					
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	2.71652285	% 
	 February 15, 2019
	  	 	2.71652285	% 
	 August 15, 2019
	  	 	2.71652285	% 
	 February 15, 2020
	  	 	2.71652285	% 
	 August 15, 2020
	  	 	2.71652285	% 
	 February 15, 2021
	  	 	2.71652285	% 
	 August 15, 2021
	  	 	2.71652285	% 
	 February 15, 2022
	  	 	2.71652285	% 
	 August 15, 2022
	  	 	2.71652285	% 
	 February 15, 2023
	  	 	2.71652285	% 
	 August 15, 2023
	  	 	2.71652285	% 
	 February 15, 2024
	  	 	2.45178955	% 
	 August 15, 2024
	  	 	2.45178960	% 
	 February 15, 2025
	  	 	2.45178955	% 
	 August 15, 2025
	  	 	2.45178960	% 
	 February 15, 2026
	  	 	2.45178955	% 
	 August 15, 2026
	  	 	2.45178960	% 
	 February 15, 2027
	  	 	2.45178955	% 
	 August 15, 2027
	  	 	2.45178955	% 
	 February 15, 2028
	  	 	2.45178960	% 
	 August 15, 2028
	  	 	2.45178955	% 
	 February 15, 2029
	  	 	2.45178960	% 
	 August 15, 2029
	  	 	2.45178955	% 
	 February 15, 2030
	  	 	40.69677378	% 

  

					
		  	Sch. III-6	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 Series A Equipment Notes 

Airbus A320-200 

N652NK[**] 

					
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	2.71652285	% 
	 February 15, 2019
	  	 	2.71652285	% 
	 August 15, 2019
	  	 	2.71652285	% 
	 February 15, 2020
	  	 	2.71652285	% 
	 August 15, 2020
	  	 	2.71652285	% 
	 February 15, 2021
	  	 	2.71652285	% 
	 August 15, 2021
	  	 	2.71652285	% 
	 February 15, 2022
	  	 	2.71652285	% 
	 August 15, 2022
	  	 	2.71652285	% 
	 February 15, 2023
	  	 	2.71652285	% 
	 August 15, 2023
	  	 	2.71652285	% 
	 February 15, 2024
	  	 	2.45178955	% 
	 August 15, 2024
	  	 	2.45178955	% 
	 February 15, 2025
	  	 	2.45178955	% 
	 August 15, 2025
	  	 	2.45178971	% 
	 February 15, 2026
	  	 	2.45178955	% 
	 August 15, 2026
	  	 	2.45178955	% 
	 February 15, 2027
	  	 	2.45178955	% 
	 August 15, 2027
	  	 	2.45178955	% 
	 February 15, 2028
	  	 	2.45178955	% 
	 August 15, 2028
	  	 	2.45178955	% 
	 February 15, 2029
	  	 	2.45178971	% 
	 August 15, 2029
	  	 	2.45178955	% 
	 February 15, 2030
	  	 	40.69677373	% 

  

					
		  	Sch. III-7	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 Series B Equipment Notes 

Airbus A320-200 

N652NK[**] 

					
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	11.56570768	% 
	 February 15, 2019
	  	 	6.26738572	% 
	 August 15, 2019
	  	 	6.26738557	% 
	 February 15, 2020
	  	 	4.53780960	% 
	 August 15, 2020
	  	 	4.53780945	% 
	 February 15, 2021
	  	 	2.52999855	% 
	 August 15, 2021
	  	 	2.52999855	% 
	 February 15, 2022
	  	 	2.52999855	% 
	 August 15, 2022
	  	 	1.80714182	% 
	 February 15, 2023
	  	 	1.80714182	% 
	 August 15, 2023
	  	 	1.80714182	% 
	 February 15, 2024
	  	 	1.80714182	% 
	 August 15, 2024
	  	 	1.80714182	% 
	 February 15, 2025
	  	 	1.80714182	% 
	 August 15, 2025
	  	 	1.80714182	% 
	 February 15, 2026
	  	 	46.58391355	% 
	 August 15, 2026
	  	 	0.00000000	% 
	 February 15, 2027
	  	 	0.00000000	% 
	 August 15, 2027
	  	 	0.00000000	% 
	 February 15, 2028
	  	 	0.00000000	% 
	 August 15, 2028
	  	 	0.00000000	% 
	 February 15, 2029
	  	 	0.00000000	% 
	 August 15, 2029
	  	 	0.00000000	% 
	 February 15, 2030
	  	 	0.00000000	% 

  

					
		  	Sch. III-8	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 Series AA Equipment Notes 

Airbus A320-200 

N653NK[**] 

					
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	2.71652285	% 
	 February 15, 2019
	  	 	2.71652285	% 
	 August 15, 2019
	  	 	2.71652285	% 
	 February 15, 2020
	  	 	2.71652285	% 
	 August 15, 2020
	  	 	2.71652285	% 
	 February 15, 2021
	  	 	2.71652285	% 
	 August 15, 2021
	  	 	2.71652285	% 
	 February 15, 2022
	  	 	2.71652285	% 
	 August 15, 2022
	  	 	2.71652285	% 
	 February 15, 2023
	  	 	2.71652285	% 
	 August 15, 2023
	  	 	2.71652285	% 
	 February 15, 2024
	  	 	2.45178954	% 
	 August 15, 2024
	  	 	2.45178959	% 
	 February 15, 2025
	  	 	2.45178954	% 
	 August 15, 2025
	  	 	2.45178959	% 
	 February 15, 2026
	  	 	2.45178959	% 
	 August 15, 2026
	  	 	2.45178954	% 
	 February 15, 2027
	  	 	2.45178959	% 
	 August 15, 2027
	  	 	2.45178954	% 
	 February 15, 2028
	  	 	2.45178959	% 
	 August 15, 2028
	  	 	2.45178959	% 
	 February 15, 2029
	  	 	2.45178954	% 
	 August 15, 2029
	  	 	2.45178959	% 
	 February 15, 2030
	  	 	40.69677376	% 

  

					
		  	Sch. III-9	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 Series A Equipment Notes 

Airbus A320-200 

N653NK[**] 

					
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	2.71652280	% 
	 February 15, 2019
	  	 	2.71652296	% 
	 August 15, 2019
	  	 	2.71652280	% 
	 February 15, 2020
	  	 	2.71652280	% 
	 August 15, 2020
	  	 	2.71652296	% 
	 February 15, 2021
	  	 	2.71652280	% 
	 August 15, 2021
	  	 	2.71652280	% 
	 February 15, 2022
	  	 	2.71652296	% 
	 August 15, 2022
	  	 	2.71652280	% 
	 February 15, 2023
	  	 	2.71652280	% 
	 August 15, 2023
	  	 	2.71652296	% 
	 February 15, 2024
	  	 	2.45178954	% 
	 August 15, 2024
	  	 	2.45178954	% 
	 February 15, 2025
	  	 	2.45178954	% 
	 August 15, 2025
	  	 	2.45178954	% 
	 February 15, 2026
	  	 	2.45178970	% 
	 August 15, 2026
	  	 	2.45178954	% 
	 February 15, 2027
	  	 	2.45178954	% 
	 August 15, 2027
	  	 	2.45178954	% 
	 February 15, 2028
	  	 	2.45178954	% 
	 August 15, 2028
	  	 	2.45178970	% 
	 February 15, 2029
	  	 	2.45178954	% 
	 August 15, 2029
	  	 	2.45178954	% 
	 February 15, 2030
	  	 	40.69677376	% 

  

					
		  	Sch. III-10	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 Series B Equipment Notes 

Airbus A320-200 

N653NK[**] 

					
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	11.56649899	% 
	 February 15, 2019
	  	 	6.26781448	% 
	 August 15, 2019
	  	 	6.26781448	% 
	 February 15, 2020
	  	 	4.53811988	% 
	 August 15, 2020
	  	 	4.53812002	% 
	 February 15, 2021
	  	 	2.53017167	% 
	 August 15, 2021
	  	 	2.53017167	% 
	 February 15, 2022
	  	 	2.53017167	% 
	 August 15, 2022
	  	 	1.80726544	% 
	 February 15, 2023
	  	 	1.80726544	% 
	 August 15, 2023
	  	 	1.80726544	% 
	 February 15, 2024
	  	 	1.80726558	% 
	 August 15, 2024
	  	 	1.80726544	% 
	 February 15, 2025
	  	 	1.80726544	% 
	 August 15, 2025
	  	 	1.80726544	% 
	 February 15, 2026
	  	 	46.58025894	% 
	 August 15, 2026
	  	 	0.00000000	% 
	 February 15, 2027
	  	 	0.00000000	% 
	 August 15, 2027
	  	 	0.00000000	% 
	 February 15, 2028
	  	 	0.00000000	% 
	 August 15, 2028
	  	 	0.00000000	% 
	 February 15, 2029
	  	 	0.00000000	% 
	 August 15, 2029
	  	 	0.00000000	% 
	 February 15, 2030
	  	 	0.00000000	% 

  

					
		  	Sch. III-11	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 Series AA Equipment Notes 

Airbus A321-200 

N683NK[**] 

					
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	2.71647544	% 
	 February 15, 2019
	  	 	2.71647544	% 
	 August 15, 2019
	  	 	2.71647548	% 
	 February 15, 2020
	  	 	2.71647544	% 
	 August 15, 2020
	  	 	2.71647544	% 
	 February 15, 2021
	  	 	2.71647544	% 
	 August 15, 2021
	  	 	2.71647548	% 
	 February 15, 2022
	  	 	2.71647544	% 
	 August 15, 2022
	  	 	2.71647544	% 
	 February 15, 2023
	  	 	2.71647544	% 
	 August 15, 2023
	  	 	2.71647544	% 
	 February 15, 2024
	  	 	2.45174682	% 
	 August 15, 2024
	  	 	2.45174677	% 
	 February 15, 2025
	  	 	2.45174682	% 
	 August 15, 2025
	  	 	2.45174677	% 
	 February 15, 2026
	  	 	2.45174682	% 
	 August 15, 2026
	  	 	2.45174677	% 
	 February 15, 2027
	  	 	2.45174682	% 
	 August 15, 2027
	  	 	2.45174677	% 
	 February 15, 2028
	  	 	2.45174677	% 
	 August 15, 2028
	  	 	2.45174682	% 
	 February 15, 2029
	  	 	2.45174677	% 
	 August 15, 2029
	  	 	2.45174682	% 
	 February 15, 2030
	  	 	40.69780854	% 

  

					
		  	Sch. III-12	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 Series A Equipment Notes 

Airbus A321-200 

N683NK[**] 

					
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	2.71659390	% 
	 February 15, 2019
	  	 	2.71659403	% 
	 August 15, 2019
	  	 	2.71659390	% 
	 February 15, 2020
	  	 	2.71659403	% 
	 August 15, 2020
	  	 	2.71659390	% 
	 February 15, 2021
	  	 	2.71659390	% 
	 August 15, 2021
	  	 	2.71659403	% 
	 February 15, 2022
	  	 	2.71659390	% 
	 August 15, 2022
	  	 	2.71659403	% 
	 February 15, 2023
	  	 	2.71659390	% 
	 August 15, 2023
	  	 	2.71659390	% 
	 February 15, 2024
	  	 	2.45185381	% 
	 August 15, 2024
	  	 	2.45185368	% 
	 February 15, 2025
	  	 	2.45185381	% 
	 August 15, 2025
	  	 	2.45185368	% 
	 February 15, 2026
	  	 	2.45185381	% 
	 August 15, 2026
	  	 	2.45185368	% 
	 February 15, 2027
	  	 	2.45185381	% 
	 August 15, 2027
	  	 	2.45185368	% 
	 February 15, 2028
	  	 	2.45185381	% 
	 August 15, 2028
	  	 	2.45185368	% 
	 February 15, 2029
	  	 	2.45185381	% 
	 August 15, 2029
	  	 	2.45185368	% 
	 February 15, 2030
	  	 	40.69522157	% 

  

					
		  	Sch. III-13	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series B Equipment Notes

Airbus A321-200

N683NK[**]
	 
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	11.56688301	% 
	 February 15, 2019
	  	 	6.26802250	% 
	 August 15, 2019
	  	 	6.26802250	% 
	 February 15, 2020
	  	 	4.53827069	% 
	 August 15, 2020
	  	 	4.53827069	% 
	 February 15, 2021
	  	 	2.53025554	% 
	 August 15, 2021
	  	 	2.53025565	% 
	 February 15, 2022
	  	 	2.53025565	% 
	 August 15, 2022
	  	 	1.80732552	% 
	 February 15, 2023
	  	 	1.80732540	% 
	 August 15, 2023
	  	 	1.80732552	% 
	 February 15, 2024
	  	 	1.80732552	% 
	 August 15, 2024
	  	 	1.80732540	% 
	 February 15, 2025
	  	 	1.80732552	% 
	 August 15, 2025
	  	 	1.80732540	% 
	 February 15, 2026
	  	 	46.57848549	% 
	 August 15, 2026
	  	 	0.00000000	% 
	 February 15, 2027
	  	 	0.00000000	% 
	 August 15, 2027
	  	 	0.00000000	% 
	 February 15, 2028
	  	 	0.00000000	% 
	 August 15, 2028
	  	 	0.00000000	% 
	 February 15, 2029
	  	 	0.00000000	% 
	 August 15, 2029
	  	 	0.00000000	% 
	 February 15, 2030
	  	 	0.00000000	% 

  

					
		  	Sch. III-14	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series AA Equipment Notes

Airbus A321-200

N684NK[**]
  
	 
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	2.71647544	% 
	 February 15, 2019
	  	 	2.71647544	% 
	 August 15, 2019
	  	 	2.71647548	% 
	 February 15, 2020
	  	 	2.71647544	% 
	 August 15, 2020
	  	 	2.71647544	% 
	 February 15, 2021
	  	 	2.71647544	% 
	 August 15, 2021
	  	 	2.71647548	% 
	 February 15, 2022
	  	 	2.71647544	% 
	 August 15, 2022
	  	 	2.71647544	% 
	 February 15, 2023
	  	 	2.71647544	% 
	 August 15, 2023
	  	 	2.71647544	% 
	 February 15, 2024
	  	 	2.45174682	% 
	 August 15, 2024
	  	 	2.45174677	% 
	 February 15, 2025
	  	 	2.45174682	% 
	 August 15, 2025
	  	 	2.45174677	% 
	 February 15, 2026
	  	 	2.45174682	% 
	 August 15, 2026
	  	 	2.45174677	% 
	 February 15, 2027
	  	 	2.45174682	% 
	 August 15, 2027
	  	 	2.45174677	% 
	 February 15, 2028
	  	 	2.45174677	% 
	 August 15, 2028
	  	 	2.45174682	% 
	 February 15, 2029
	  	 	2.45174677	% 
	 August 15, 2029
	  	 	2.45174682	% 
	 February 15, 2030
	  	 	40.69780854	% 

  

					
		  	Sch. III-15	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series A Equipment Notes

Airbus A321-200

N684NK[**]
  
	 
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	2.71659390	% 
	 February 15, 2019
	  	 	2.71659403	% 
	 August 15, 2019
	  	 	2.71659390	% 
	 February 15, 2020
	  	 	2.71659403	% 
	 August 15, 2020
	  	 	2.71659390	% 
	 February 15, 2021
	  	 	2.71659390	% 
	 August 15, 2021
	  	 	2.71659403	% 
	 February 15, 2022
	  	 	2.71659390	% 
	 August 15, 2022
	  	 	2.71659403	% 
	 February 15, 2023
	  	 	2.71659390	% 
	 August 15, 2023
	  	 	2.71659390	% 
	 February 15, 2024
	  	 	2.45185381	% 
	 August 15, 2024
	  	 	2.45185368	% 
	 February 15, 2025
	  	 	2.45185381	% 
	 August 15, 2025
	  	 	2.45185368	% 
	 February 15, 2026
	  	 	2.45185381	% 
	 August 15, 2026
	  	 	2.45185368	% 
	 February 15, 2027
	  	 	2.45185381	% 
	 August 15, 2027
	  	 	2.45185368	% 
	 February 15, 2028
	  	 	2.45185381	% 
	 August 15, 2028
	  	 	2.45185368	% 
	 February 15, 2029
	  	 	2.45185381	% 
	 August 15, 2029
	  	 	2.45185368	% 
	 February 15, 2030
	  	 	40.69522157	% 

  

					
		  	Sch. III-16	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series B Equipment Notes

Airbus A321-200

N684NK[**]
  
	 
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	11.56688301	% 
	 February 15, 2019
	  	 	6.26802250	% 
	 August 15, 2019
	  	 	6.26802250	% 
	 February 15, 2020
	  	 	4.53827069	% 
	 August 15, 2020
	  	 	4.53827069	% 
	 February 15, 2021
	  	 	2.53025554	% 
	 August 15, 2021
	  	 	2.53025565	% 
	 February 15, 2022
	  	 	2.53025565	% 
	 August 15, 2022
	  	 	1.80732552	% 
	 February 15, 2023
	  	 	1.80732540	% 
	 August 15, 2023
	  	 	1.80732552	% 
	 February 15, 2024
	  	 	1.80732552	% 
	 August 15, 2024
	  	 	1.80732540	% 
	 February 15, 2025
	  	 	1.80732552	% 
	 August 15, 2025
	  	 	1.80732540	% 
	 February 15, 2026
	  	 	46.57848549	% 
	 August 15, 2026
	  	 	0.00000000	% 
	 February 15, 2027
	  	 	0.00000000	% 
	 August 15, 2027
	  	 	0.00000000	% 
	 February 15, 2028
	  	 	0.00000000	% 
	 August 15, 2028
	  	 	0.00000000	% 
	 February 15, 2029
	  	 	0.00000000	% 
	 August 15, 2029
	  	 	0.00000000	% 
	 February 15, 2030
	  	 	0.00000000	% 

  

					
		  	Sch. III-17	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series AA Equipment Notes

Airbus A321-200

N685NK[**]
  
	 
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	2.71647544	% 
	 February 15, 2019
	  	 	2.71647544	% 
	 August 15, 2019
	  	 	2.71647548	% 
	 February 15, 2020
	  	 	2.71647544	% 
	 August 15, 2020
	  	 	2.71647544	% 
	 February 15, 2021
	  	 	2.71647544	% 
	 August 15, 2021
	  	 	2.71647548	% 
	 February 15, 2022
	  	 	2.71647544	% 
	 August 15, 2022
	  	 	2.71647544	% 
	 February 15, 2023
	  	 	2.71647544	% 
	 August 15, 2023
	  	 	2.71647544	% 
	 February 15, 2024
	  	 	2.45174682	% 
	 August 15, 2024
	  	 	2.45174677	% 
	 February 15, 2025
	  	 	2.45174682	% 
	 August 15, 2025
	  	 	2.45174677	% 
	 February 15, 2026
	  	 	2.45174682	% 
	 August 15, 2026
	  	 	2.45174677	% 
	 February 15, 2027
	  	 	2.45174682	% 
	 August 15, 2027
	  	 	2.45174677	% 
	 February 15, 2028
	  	 	2.45174677	% 
	 August 15, 2028
	  	 	2.45174682	% 
	 February 15, 2029
	  	 	2.45174677	% 
	 August 15, 2029
	  	 	2.45174682	% 
	 February 15, 2030
	  	 	40.69780854	% 

  

					
		  	Sch. III-18	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series A Equipment Notes

Airbus A321-200

N685NK[**]
  
	 
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	2.71659390	% 
	 February 15, 2019
	  	 	2.71659403	% 
	 August 15, 2019
	  	 	2.71659390	% 
	 February 15, 2020
	  	 	2.71659403	% 
	 August 15, 2020
	  	 	2.71659390	% 
	 February 15, 2021
	  	 	2.71659390	% 
	 August 15, 2021
	  	 	2.71659403	% 
	 February 15, 2022
	  	 	2.71659390	% 
	 August 15, 2022
	  	 	2.71659403	% 
	 February 15, 2023
	  	 	2.71659390	% 
	 August 15, 2023
	  	 	2.71659390	% 
	 February 15, 2024
	  	 	2.45185381	% 
	 August 15, 2024
	  	 	2.45185368	% 
	 February 15, 2025
	  	 	2.45185381	% 
	 August 15, 2025
	  	 	2.45185368	% 
	 February 15, 2026
	  	 	2.45185381	% 
	 August 15, 2026
	  	 	2.45185368	% 
	 February 15, 2027
	  	 	2.45185381	% 
	 August 15, 2027
	  	 	2.45185368	% 
	 February 15, 2028
	  	 	2.45185381	% 
	 August 15, 2028
	  	 	2.45185368	% 
	 February 15, 2029
	  	 	2.45185381	% 
	 August 15, 2029
	  	 	2.45185368	% 
	 February 15, 2030
	  	 	40.69522157	% 

  

					
		  	Sch. III-19	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series B Equipment Notes

Airbus A321-200

N685NK[**]
  
	 
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	11.56688301	% 
	 February 15, 2019
	  	 	6.26802250	% 
	 August 15, 2019
	  	 	6.26802250	% 
	 February 15, 2020
	  	 	4.53827069	% 
	 August 15, 2020
	  	 	4.53827069	% 
	 February 15, 2021
	  	 	2.53025554	% 
	 August 15, 2021
	  	 	2.53025565	% 
	 February 15, 2022
	  	 	2.53025565	% 
	 August 15, 2022
	  	 	1.80732552	% 
	 February 15, 2023
	  	 	1.80732540	% 
	 August 15, 2023
	  	 	1.80732552	% 
	 February 15, 2024
	  	 	1.80732552	% 
	 August 15, 2024
	  	 	1.80732540	% 
	 February 15, 2025
	  	 	1.80732552	% 
	 August 15, 2025
	  	 	1.80732540	% 
	 February 15, 2026
	  	 	46.57848549	% 
	 August 15, 2026
	  	 	0.00000000	% 
	 February 15, 2027
	  	 	0.00000000	% 
	 August 15, 2027
	  	 	0.00000000	% 
	 February 15, 2028
	  	 	0.00000000	% 
	 August 15, 2028
	  	 	0.00000000	% 
	 February 15, 2029
	  	 	0.00000000	% 
	 August 15, 2029
	  	 	0.00000000	% 
	 February 15, 2030
	  	 	0.00000000	% 

  

					
		  	Sch. III-20	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series AA Equipment Notes

Airbus A321-200

N686NK[**]
  
	 
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	2.71657023	% 
	 February 15, 2019
	  	 	2.71657023	% 
	 August 15, 2019
	  	 	2.71657018	% 
	 February 15, 2020
	  	 	2.71657023	% 
	 August 15, 2020
	  	 	2.71657023	% 
	 February 15, 2021
	  	 	2.71657023	% 
	 August 15, 2021
	  	 	2.71657023	% 
	 February 15, 2022
	  	 	2.71657018	% 
	 August 15, 2022
	  	 	2.71657023	% 
	 February 15, 2023
	  	 	2.71657023	% 
	 August 15, 2023
	  	 	2.71657023	% 
	 February 15, 2024
	  	 	2.45183230	% 
	 August 15, 2024
	  	 	2.45183235	% 
	 February 15, 2025
	  	 	2.45183230	% 
	 August 15, 2025
	  	 	2.45183235	% 
	 February 15, 2026
	  	 	2.45183230	% 
	 August 15, 2026
	  	 	2.45183235	% 
	 February 15, 2027
	  	 	2.45183230	% 
	 August 15, 2027
	  	 	2.45183235	% 
	 February 15, 2028
	  	 	2.45183230	% 
	 August 15, 2028
	  	 	2.45183235	% 
	 February 15, 2029
	  	 	2.45183230	% 
	 August 15, 2029
	  	 	2.45183235	% 
	 February 15, 2030
	  	 	40.69573971	% 

  

					
		  	Sch. III-21	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series A Equipment Notes

Airbus A321-200

N686NK[**]
  
	 
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	2.71645181	% 
	 February 15, 2019
	  	 	2.71645181	% 
	 August 15, 2019
	  	 	2.71645181	% 
	 February 15, 2020
	  	 	2.71645181	% 
	 August 15, 2020
	  	 	2.71645181	% 
	 February 15, 2021
	  	 	2.71645181	% 
	 August 15, 2021
	  	 	2.71645181	% 
	 February 15, 2022
	  	 	2.71645168	% 
	 August 15, 2022
	  	 	2.71645181	% 
	 February 15, 2023
	  	 	2.71645181	% 
	 August 15, 2023
	  	 	2.71645181	% 
	 February 15, 2024
	  	 	2.45172551	% 
	 August 15, 2024
	  	 	2.45172538	% 
	 February 15, 2025
	  	 	2.45172551	% 
	 August 15, 2025
	  	 	2.45172538	% 
	 February 15, 2026
	  	 	2.45172551	% 
	 August 15, 2026
	  	 	2.45172538	% 
	 February 15, 2027
	  	 	2.45172551	% 
	 August 15, 2027
	  	 	2.45172538	% 
	 February 15, 2028
	  	 	2.45172551	% 
	 August 15, 2028
	  	 	2.45172538	% 
	 February 15, 2029
	  	 	2.45172551	% 
	 August 15, 2029
	  	 	2.45172538	% 
	 February 15, 2030
	  	 	40.69832483	% 

  

					
		  	Sch. III-22	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series B Equipment Notes

Airbus A321-200

N686NK[**]
  
	 
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	11.56577319	% 
	 February 15, 2019
	  	 	6.26742120	% 
	 August 15, 2019
	  	 	6.26742108	% 
	 February 15, 2020
	  	 	4.53783531	% 
	 August 15, 2020
	  	 	4.53783519	% 
	 February 15, 2021
	  	 	2.53001290	% 
	 August 15, 2021
	  	 	2.53001290	% 
	 February 15, 2022
	  	 	2.53001290	% 
	 August 15, 2022
	  	 	1.80715204	% 
	 February 15, 2023
	  	 	1.80715204	% 
	 August 15, 2023
	  	 	1.80715204	% 
	 February 15, 2024
	  	 	1.80715215	% 
	 August 15, 2024
	  	 	1.80715204	% 
	 February 15, 2025
	  	 	1.80715204	% 
	 August 15, 2025
	  	 	1.80715204	% 
	 February 15, 2026
	  	 	46.58361098	% 
	 August 15, 2026
	  	 	0.00000000	% 
	 February 15, 2027
	  	 	0.00000000	% 
	 August 15, 2027
	  	 	0.00000000	% 
	 February 15, 2028
	  	 	0.00000000	% 
	 August 15, 2028
	  	 	0.00000000	% 
	 February 15, 2029
	  	 	0.00000000	% 
	 August 15, 2029
	  	 	0.00000000	% 
	 February 15, 2030
	  	 	0.00000000	% 

  

					
		  	Sch. III-23	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series AA Equipment Notes

Airbus A321-200

N687NK[**]
  
	 
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	2.71657023	% 
	 February 15, 2019
	  	 	2.71657023	% 
	 August 15, 2019
	  	 	2.71657018	% 
	 February 15, 2020
	  	 	2.71657023	% 
	 August 15, 2020
	  	 	2.71657023	% 
	 February 15, 2021
	  	 	2.71657023	% 
	 August 15, 2021
	  	 	2.71657023	% 
	 February 15, 2022
	  	 	2.71657018	% 
	 August 15, 2022
	  	 	2.71657023	% 
	 February 15, 2023
	  	 	2.71657023	% 
	 August 15, 2023
	  	 	2.71657023	% 
	 February 15, 2024
	  	 	2.45183230	% 
	 August 15, 2024
	  	 	2.45183235	% 
	 February 15, 2025
	  	 	2.45183230	% 
	 August 15, 2025
	  	 	2.45183235	% 
	 February 15, 2026
	  	 	2.45183230	% 
	 August 15, 2026
	  	 	2.45183235	% 
	 February 15, 2027
	  	 	2.45183230	% 
	 August 15, 2027
	  	 	2.45183235	% 
	 February 15, 2028
	  	 	2.45183230	% 
	 August 15, 2028
	  	 	2.45183235	% 
	 February 15, 2029
	  	 	2.45183230	% 
	 August 15, 2029
	  	 	2.45183235	% 
	 February 15, 2030
	  	 	40.69573971	% 

  

					
		  	Sch. III-24	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series A Equipment Notes

Airbus A321-200

N687NK[**]
  
	 
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	2.71645181	% 
	 February 15, 2019
	  	 	2.71645181	% 
	 August 15, 2019
	  	 	2.71645181	% 
	 February 15, 2020
	  	 	2.71645181	% 
	 August 15, 2020
	  	 	2.71645181	% 
	 February 15, 2021
	  	 	2.71645181	% 
	 August 15, 2021
	  	 	2.71645181	% 
	 February 15, 2022
	  	 	2.71645168	% 
	 August 15, 2022
	  	 	2.71645181	% 
	 February 15, 2023
	  	 	2.71645181	% 
	 August 15, 2023
	  	 	2.71645181	% 
	 February 15, 2024
	  	 	2.45172551	% 
	 August 15, 2024
	  	 	2.45172538	% 
	 February 15, 2025
	  	 	2.45172551	% 
	 August 15, 2025
	  	 	2.45172538	% 
	 February 15, 2026
	  	 	2.45172551	% 
	 August 15, 2026
	  	 	2.45172538	% 
	 February 15, 2027
	  	 	2.45172551	% 
	 August 15, 2027
	  	 	2.45172538	% 
	 February 15, 2028
	  	 	2.45172551	% 
	 August 15, 2028
	  	 	2.45172538	% 
	 February 15, 2029
	  	 	2.45172551	% 
	 August 15, 2029
	  	 	2.45172538	% 
	 February 15, 2030
	  	 	40.69832483	% 

  

					
		  	Sch. III-25	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series B Equipment Notes

Airbus A321-200

N687NK[**]
  
	 
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	11.56577319	% 
	 February 15, 2019
	  	 	6.26742120	% 
	 August 15, 2019
	  	 	6.26742108	% 
	 February 15, 2020
	  	 	4.53783531	% 
	 August 15, 2020
	  	 	4.53783519	% 
	 February 15, 2021
	  	 	2.53001290	% 
	 August 15, 2021
	  	 	2.53001290	% 
	 February 15, 2022
	  	 	2.53001290	% 
	 August 15, 2022
	  	 	1.80715204	% 
	 February 15, 2023
	  	 	1.80715204	% 
	 August 15, 2023
	  	 	1.80715204	% 
	 February 15, 2024
	  	 	1.80715215	% 
	 August 15, 2024
	  	 	1.80715204	% 
	 February 15, 2025
	  	 	1.80715204	% 
	 August 15, 2025
	  	 	1.80715204	% 
	 February 15, 2026
	  	 	46.58361098	% 
	 August 15, 2026
	  	 	0.00000000	% 
	 February 15, 2027
	  	 	0.00000000	% 
	 August 15, 2027
	  	 	0.00000000	% 
	 February 15, 2028
	  	 	0.00000000	% 
	 August 15, 2028
	  	 	0.00000000	% 
	 February 15, 2029
	  	 	0.00000000	% 
	 August 15, 2029
	  	 	0.00000000	% 
	 February 15, 2030
	  	 	0.00000000	% 

  

					
		  	Sch. III-26	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series AA Equipment Notes

Airbus A320-200

N654NK[**]
  
	 
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	0.00000000	% 
	 February 15, 2019
	  	 	3.12503296	% 
	 August 15, 2019
	  	 	3.12503296	% 
	 February 15, 2020
	  	 	3.12503296	% 
	 August 15, 2020
	  	 	3.12503296	% 
	 February 15, 2021
	  	 	3.12503296	% 
	 August 15, 2021
	  	 	3.12503296	% 
	 February 15, 2022
	  	 	3.12503296	% 
	 August 15, 2022
	  	 	3.12503296	% 
	 February 15, 2023
	  	 	3.12503296	% 
	 August 15, 2023
	  	 	3.12503296	% 
	 February 15, 2024
	  	 	2.33746960	% 
	 August 15, 2024
	  	 	2.33746960	% 
	 February 15, 2025
	  	 	2.33746960	% 
	 August 15, 2025
	  	 	2.33746960	% 
	 February 15, 2026
	  	 	2.33746955	% 
	 August 15, 2026
	  	 	2.33746960	% 
	 February 15, 2027
	  	 	2.33746960	% 
	 August 15, 2027
	  	 	2.33746960	% 
	 February 15, 2028
	  	 	2.33746960	% 
	 August 15, 2028
	  	 	2.33746960	% 
	 February 15, 2029
	  	 	2.33746960	% 
	 August 15, 2029
	  	 	2.33746960	% 
	 February 15, 2030
	  	 	40.70003528	% 

  

					
		  	Sch. III-27	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series A Equipment Notes

Airbus A320-200

N654NK[**]
  
	 
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	0.00000000	% 
	 February 15, 2019
	  	 	3.12503291	% 
	 August 15, 2019
	  	 	3.12503306	% 
	 February 15, 2020
	  	 	3.12503291	% 
	 August 15, 2020
	  	 	3.12503291	% 
	 February 15, 2021
	  	 	3.12503306	% 
	 August 15, 2021
	  	 	3.12503291	% 
	 February 15, 2022
	  	 	3.12503291	% 
	 August 15, 2022
	  	 	3.12503306	% 
	 February 15, 2023
	  	 	3.12503291	% 
	 August 15, 2023
	  	 	3.12503291	% 
	 February 15, 2024
	  	 	2.33746970	% 
	 August 15, 2024
	  	 	2.33746955	% 
	 February 15, 2025
	  	 	2.33746955	% 
	 August 15, 2025
	  	 	2.33746970	% 
	 February 15, 2026
	  	 	2.33746955	% 
	 August 15, 2026
	  	 	2.33746955	% 
	 February 15, 2027
	  	 	2.33746955	% 
	 August 15, 2027
	  	 	2.33746970	% 
	 February 15, 2028
	  	 	2.33746955	% 
	 August 15, 2028
	  	 	2.33746955	% 
	 February 15, 2029
	  	 	2.33746970	% 
	 August 15, 2029
	  	 	2.33746955	% 
	 February 15, 2030
	  	 	40.70003528	% 

  

					
		  	Sch. III-28	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series B Equipment Notes

Airbus A320-200

N654NK[**]
  
	 
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	0.00000000	% 
	 February 15, 2019
	  	 	9.36760378	% 
	 August 15, 2019
	  	 	9.36760378	% 
	 February 15, 2020
	  	 	7.63793330	% 
	 August 15, 2020
	  	 	7.63793315	% 
	 February 15, 2021
	  	 	2.86286859	% 
	 August 15, 2021
	  	 	2.86286859	% 
	 February 15, 2022
	  	 	2.86286859	% 
	 August 15, 2022
	  	 	2.14715145	% 
	 February 15, 2023
	  	 	2.14715145	% 
	 August 15, 2023
	  	 	2.14715145	% 
	 February 15, 2024
	  	 	2.14715145	% 
	 August 15, 2024
	  	 	2.14715145	% 
	 February 15, 2025
	  	 	2.14715145	% 
	 August 15, 2025
	  	 	2.14715145	% 
	 February 15, 2026
	  	 	42.37026009	% 
	 August 15, 2026
	  	 	0.00000000	% 
	 February 15, 2027
	  	 	0.00000000	% 
	 August 15, 2027
	  	 	0.00000000	% 
	 February 15, 2028
	  	 	0.00000000	% 
	 August 15, 2028
	  	 	0.00000000	% 
	 February 15, 2029
	  	 	0.00000000	% 
	 August 15, 2029
	  	 	0.00000000	% 
	 February 15, 2030
	  	 	0.00000000	% 

  

					
		  	Sch. III-29	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series AA Equipment Notes

Airbus A320-200

N655NK[**]
  
	 
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	0.00000000	% 
	 February 15, 2019
	  	 	3.12503294	% 
	 August 15, 2019
	  	 	3.12503299	% 
	 February 15, 2020
	  	 	3.12503294	% 
	 August 15, 2020
	  	 	3.12503299	% 
	 February 15, 2021
	  	 	3.12503294	% 
	 August 15, 2021
	  	 	3.12503294	% 
	 February 15, 2022
	  	 	3.12503299	% 
	 August 15, 2022
	  	 	3.12503294	% 
	 February 15, 2023
	  	 	3.12503294	% 
	 August 15, 2023
	  	 	3.12503299	% 
	 February 15, 2024
	  	 	2.33746956	% 
	 August 15, 2024
	  	 	2.33746961	% 
	 February 15, 2025
	  	 	2.33746961	% 
	 August 15, 2025
	  	 	2.33746956	% 
	 February 15, 2026
	  	 	2.33746961	% 
	 August 15, 2026
	  	 	2.33746961	% 
	 February 15, 2027
	  	 	2.33746956	% 
	 August 15, 2027
	  	 	2.33746961	% 
	 February 15, 2028
	  	 	2.33746956	% 
	 August 15, 2028
	  	 	2.33746961	% 
	 February 15, 2029
	  	 	2.33746961	% 
	 August 15, 2029
	  	 	2.33746956	% 
	 February 15, 2030
	  	 	40.70003531	% 

  

					
		  	Sch. III-30	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series A Equipment Notes

Airbus A320-200

N655NK[**]
  
	 
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	0.00000000	% 
	 February 15, 2019
	  	 	3.12503299	% 
	 August 15, 2019
	  	 	3.12503299	% 
	 February 15, 2020
	  	 	3.12503283	% 
	 August 15, 2020
	  	 	3.12503299	% 
	 February 15, 2021
	  	 	3.12503299	% 
	 August 15, 2021
	  	 	3.12503299	% 
	 February 15, 2022
	  	 	3.12503299	% 
	 August 15, 2022
	  	 	3.12503283	% 
	 February 15, 2023
	  	 	3.12503299	% 
	 August 15, 2023
	  	 	3.12503299	% 
	 February 15, 2024
	  	 	2.33746961	% 
	 August 15, 2024
	  	 	2.33746961	% 
	 February 15, 2025
	  	 	2.33746961	% 
	 August 15, 2025
	  	 	2.33746946	% 
	 February 15, 2026
	  	 	2.33746961	% 
	 August 15, 2026
	  	 	2.33746961	% 
	 February 15, 2027
	  	 	2.33746961	% 
	 August 15, 2027
	  	 	2.33746961	% 
	 February 15, 2028
	  	 	2.33746961	% 
	 August 15, 2028
	  	 	2.33746961	% 
	 February 15, 2029
	  	 	2.33746961	% 
	 August 15, 2029
	  	 	2.33746946	% 
	 February 15, 2030
	  	 	40.70003536	% 

  

					
		  	Sch. III-31	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series B Equipment Notes

Airbus A320-200

N655NK[**]
  
	 
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	0.00000000	% 
	 February 15, 2019
	  	 	9.36689860	% 
	 August 15, 2019
	  	 	9.36689846	% 
	 February 15, 2020
	  	 	7.63735833	% 
	 August 15, 2020
	  	 	7.63735818	% 
	 February 15, 2021
	  	 	2.86265310	% 
	 August 15, 2021
	  	 	2.86265310	% 
	 February 15, 2022
	  	 	2.86265310	% 
	 August 15, 2022
	  	 	2.14698972	% 
	 February 15, 2023
	  	 	2.14698986	% 
	 August 15, 2023
	  	 	2.14698972	% 
	 February 15, 2024
	  	 	2.14698986	% 
	 August 15, 2024
	  	 	2.14698986	% 
	 February 15, 2025
	  	 	2.14698972	% 
	 August 15, 2025
	  	 	2.14698986	% 
	 February 15, 2026
	  	 	42.37459854	% 
	 August 15, 2026
	  	 	0.00000000	% 
	 February 15, 2027
	  	 	0.00000000	% 
	 August 15, 2027
	  	 	0.00000000	% 
	 February 15, 2028
	  	 	0.00000000	% 
	 August 15, 2028
	  	 	0.00000000	% 
	 February 15, 2029
	  	 	0.00000000	% 
	 August 15, 2029
	  	 	0.00000000	% 
	 February 15, 2030
	  	 	0.00000000	% 

  

					
		  	Sch. III-32	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series AA Equipment Notes

Airbus A320-200

N656NK[**]
  
	 
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	0.00000000	% 
	 February 15, 2019
	  	 	3.12503294	% 
	 August 15, 2019
	  	 	3.12503299	% 
	 February 15, 2020
	  	 	3.12503294	% 
	 August 15, 2020
	  	 	3.12503299	% 
	 February 15, 2021
	  	 	3.12503294	% 
	 August 15, 2021
	  	 	3.12503294	% 
	 February 15, 2022
	  	 	3.12503299	% 
	 August 15, 2022
	  	 	3.12503294	% 
	 February 15, 2023
	  	 	3.12503294	% 
	 August 15, 2023
	  	 	3.12503299	% 
	 February 15, 2024
	  	 	2.33746956	% 
	 August 15, 2024
	  	 	2.33746961	% 
	 February 15, 2025
	  	 	2.33746961	% 
	 August 15, 2025
	  	 	2.33746956	% 
	 February 15, 2026
	  	 	2.33746961	% 
	 August 15, 2026
	  	 	2.33746961	% 
	 February 15, 2027
	  	 	2.33746956	% 
	 August 15, 2027
	  	 	2.33746961	% 
	 February 15, 2028
	  	 	2.33746956	% 
	 August 15, 2028
	  	 	2.33746961	% 
	 February 15, 2029
	  	 	2.33746961	% 
	 August 15, 2029
	  	 	2.33746956	% 
	 February 15, 2030
	  	 	40.70003531	% 

  

					
		  	Sch. III-33	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series A Equipment Notes

Airbus A320-200

N656NK[**]
  
	 
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	0.00000000	% 
	 February 15, 2019
	  	 	3.12503299	% 
	 August 15, 2019
	  	 	3.12503299	% 
	 February 15, 2020
	  	 	3.12503283	% 
	 August 15, 2020
	  	 	3.12503299	% 
	 February 15, 2021
	  	 	3.12503299	% 
	 August 15, 2021
	  	 	3.12503299	% 
	 February 15, 2022
	  	 	3.12503299	% 
	 August 15, 2022
	  	 	3.12503283	% 
	 February 15, 2023
	  	 	3.12503299	% 
	 August 15, 2023
	  	 	3.12503299	% 
	 February 15, 2024
	  	 	2.33746961	% 
	 August 15, 2024
	  	 	2.33746961	% 
	 February 15, 2025
	  	 	2.33746961	% 
	 August 15, 2025
	  	 	2.33746946	% 
	 February 15, 2026
	  	 	2.33746961	% 
	 August 15, 2026
	  	 	2.33746961	% 
	 February 15, 2027
	  	 	2.33746961	% 
	 August 15, 2027
	  	 	2.33746961	% 
	 February 15, 2028
	  	 	2.33746961	% 
	 August 15, 2028
	  	 	2.33746961	% 
	 February 15, 2029
	  	 	2.33746961	% 
	 August 15, 2029
	  	 	2.33746946	% 
	 February 15, 2030
	  	 	40.70003536	% 

  

					
		  	Sch. III-34	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series B Equipment Notes

Airbus A320-200

N656NK[**]
  
	 
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	0.00000000	% 
	 February 15, 2019
	  	 	9.36689860	% 
	 August 15, 2019
	  	 	9.36689846	% 
	 February 15, 2020
	  	 	7.63735833	% 
	 August 15, 2020
	  	 	7.63735818	% 
	 February 15, 2021
	  	 	2.86265310	% 
	 August 15, 2021
	  	 	2.86265310	% 
	 February 15, 2022
	  	 	2.86265310	% 
	 August 15, 2022
	  	 	2.14698972	% 
	 February 15, 2023
	  	 	2.14698986	% 
	 August 15, 2023
	  	 	2.14698972	% 
	 February 15, 2024
	  	 	2.14698986	% 
	 August 15, 2024
	  	 	2.14698986	% 
	 February 15, 2025
	  	 	2.14698972	% 
	 August 15, 2025
	  	 	2.14698986	% 
	 February 15, 2026
	  	 	42.37459854	% 
	 August 15, 2026
	  	 	0.00000000	% 
	 February 15, 2027
	  	 	0.00000000	% 
	 August 15, 2027
	  	 	0.00000000	% 
	 February 15, 2028
	  	 	0.00000000	% 
	 August 15, 2028
	  	 	0.00000000	% 
	 February 15, 2029
	  	 	0.00000000	% 
	 August 15, 2029
	  	 	0.00000000	% 
	 February 15, 2030
	  	 	0.00000000	% 

  

					
		  	Sch. III-35	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series AA Equipment Notes

Airbus A320-200

N690NK[**]
  
	 
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	0.00000000	% 
	 February 15, 2019
	  	 	3.12503297	% 
	 August 15, 2019
	  	 	3.12503297	% 
	 February 15, 2020
	  	 	3.12503297	% 
	 August 15, 2020
	  	 	3.12503291	% 
	 February 15, 2021
	  	 	3.12503297	% 
	 August 15, 2021
	  	 	3.12503297	% 
	 February 15, 2022
	  	 	3.12503297	% 
	 August 15, 2022
	  	 	3.12503297	% 
	 February 15, 2023
	  	 	3.12503297	% 
	 August 15, 2023
	  	 	3.12503291	% 
	 February 15, 2024
	  	 	2.33746960	% 
	 August 15, 2024
	  	 	2.33746960	% 
	 February 15, 2025
	  	 	2.33746960	% 
	 August 15, 2025
	  	 	2.33746960	% 
	 February 15, 2026
	  	 	2.33746960	% 
	 August 15, 2026
	  	 	2.33746960	% 
	 February 15, 2027
	  	 	2.33746960	% 
	 August 15, 2027
	  	 	2.33746960	% 
	 February 15, 2028
	  	 	2.33746960	% 
	 August 15, 2028
	  	 	2.33746960	% 
	 February 15, 2029
	  	 	2.33746960	% 
	 August 15, 2029
	  	 	2.33746960	% 
	 February 15, 2030
	  	 	40.70003527	% 

  

					
		  	Sch. III-36	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series A Equipment Notes

Airbus A320-200

N690NK[**]
	 
		
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	0.00000000	% 
	 February 15, 2019
	  	 	3.12503297	% 
	 August 15, 2019
	  	 	3.12503297	% 
	 February 15, 2020
	  	 	3.12503297	% 
	 August 15, 2020
	  	 	3.12503297	% 
	 February 15, 2021
	  	 	3.12503297	% 
	 August 15, 2021
	  	 	3.12503297	% 
	 February 15, 2022
	  	 	3.12503297	% 
	 August 15, 2022
	  	 	3.12503297	% 
	 February 15, 2023
	  	 	3.12503297	% 
	 August 15, 2023
	  	 	3.12503281	% 
	 February 15, 2024
	  	 	2.33746970	% 
	 August 15, 2024
	  	 	2.33746954	% 
	 February 15, 2025
	  	 	2.33746954	% 
	 August 15, 2025
	  	 	2.33746970	% 
	 February 15, 2026
	  	 	2.33746954	% 
	 August 15, 2026
	  	 	2.33746954	% 
	 February 15, 2027
	  	 	2.33746970	% 
	 August 15, 2027
	  	 	2.33746954	% 
	 February 15, 2028
	  	 	2.33746954	% 
	 August 15, 2028
	  	 	2.33746970	% 
	 February 15, 2029
	  	 	2.33746954	% 
	 August 15, 2029
	  	 	2.33746954	% 
	 February 15, 2030
	  	 	40.70003532	% 

  

					
		  	Sch. III-37	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series B Equipment Notes

Airbus A320-200

N690NK[**]
	 
		
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	0.00000000	% 
	 February 15, 2019
	  	 	9.36781009	% 
	 August 15, 2019
	  	 	9.36781009	% 
	 February 15, 2020
	  	 	7.63810142	% 
	 August 15, 2020
	  	 	7.63810156	% 
	 February 15, 2021
	  	 	2.86293153	% 
	 August 15, 2021
	  	 	2.86293168	% 
	 February 15, 2022
	  	 	2.86293168	% 
	 August 15, 2022
	  	 	2.14719872	% 
	 February 15, 2023
	  	 	2.14719872	% 
	 August 15, 2023
	  	 	2.14719872	% 
	 February 15, 2024
	  	 	2.14719872	% 
	 August 15, 2024
	  	 	2.14719872	% 
	 February 15, 2025
	  	 	2.14719872	% 
	 August 15, 2025
	  	 	2.14719872	% 
	 February 15, 2026
	  	 	42.36899091	% 
	 August 15, 2026
	  	 	0.00000000	% 
	 February 15, 2027
	  	 	0.00000000	% 
	 August 15, 2027
	  	 	0.00000000	% 
	 February 15, 2028
	  	 	0.00000000	% 
	 August 15, 2028
	  	 	0.00000000	% 
	 February 15, 2029
	  	 	0.00000000	% 
	 August 15, 2029
	  	 	0.00000000	% 
	 February 15, 2030
	  	 	0.00000000	% 

  

					
		  	Sch. III-38	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 ADJUSTED AMORTIZATION SCHEDULES – EARLY DELIVERY
AIRCRAFT2 
  

					
	 Series AA Equipment Notes

Airbus A320-200

N651NK
	 
		
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	0.00000000	% 
	 February 15, 2019
	  	 	2.79237845	% 
	 August 15, 2019
	  	 	2.79237845	% 
	 February 15, 2020
	  	 	2.79237845	% 
	 August 15, 2020
	  	 	2.79237845	% 
	 February 15, 2021
	  	 	2.79237845	% 
	 August 15, 2021
	  	 	2.79237845	% 
	 February 15, 2022
	  	 	2.79237845	% 
	 August 15, 2022
	  	 	2.79237845	% 
	 February 15, 2023
	  	 	2.79237845	% 
	 August 15, 2023
	  	 	2.79237845	% 
	 February 15, 2024
	  	 	2.52025279	% 
	 August 15, 2024
	  	 	2.52025285	% 
	 February 15, 2025
	  	 	2.52025279	% 
	 August 15, 2025
	  	 	2.52025285	% 
	 February 15, 2026
	  	 	2.52025279	% 
	 August 15, 2026
	  	 	2.52025285	% 
	 February 15, 2027
	  	 	2.52025279	% 
	 August 15, 2027
	  	 	2.52025279	% 
	 February 15, 2028
	  	 	2.52025285	% 
	 August 15, 2028
	  	 	2.52025279	% 
	 February 15, 2029
	  	 	2.52025285	% 
	 August 15, 2029
	  	 	2.52025279	% 
	 February 15, 2030
	  	 	41.83318172	% 

  

	2 	These are the adjusted amortization schedules for any Early Delivery Aircraft whose Equipment Notes are issued on or after August 15, 2018. There will be no adjustments for amortization schedules for any Aircraft
that is not an Early Delivery Aircraft. 

  

					
		  	Sch. III-39	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series A Equipment Notes

Airbus A320-200

N651NK
	 
		
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	0.00000000	% 
	 February 15, 2019
	  	 	2.79237845	% 
	 August 15, 2019
	  	 	2.79237845	% 
	 February 15, 2020
	  	 	2.79237845	% 
	 August 15, 2020
	  	 	2.79237845	% 
	 February 15, 2021
	  	 	2.79237845	% 
	 August 15, 2021
	  	 	2.79237845	% 
	 February 15, 2022
	  	 	2.79237845	% 
	 August 15, 2022
	  	 	2.79237845	% 
	 February 15, 2023
	  	 	2.79237845	% 
	 August 15, 2023
	  	 	2.79237845	% 
	 February 15, 2024
	  	 	2.52025279	% 
	 August 15, 2024
	  	 	2.52025279	% 
	 February 15, 2025
	  	 	2.52025279	% 
	 August 15, 2025
	  	 	2.52025296	% 
	 February 15, 2026
	  	 	2.52025279	% 
	 August 15, 2026
	  	 	2.52025279	% 
	 February 15, 2027
	  	 	2.52025279	% 
	 August 15, 2027
	  	 	2.52025279	% 
	 February 15, 2028
	  	 	2.52025279	% 
	 August 15, 2028
	  	 	2.52025279	% 
	 February 15, 2029
	  	 	2.52025296	% 
	 August 15, 2029
	  	 	2.52025279	% 
	 February 15, 2030
	  	 	41.83318167	% 

  

					
		  	Sch. III-40	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series B Equipment Notes

Airbus A320-200

N651NK
	 
		
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	0.00000000	% 
	 February 15, 2019
	  	 	7.08705362	% 
	 August 15, 2019
	  	 	7.08705346	% 
	 February 15, 2020
	  	 	5.13127824	% 
	 August 15, 2020
	  	 	5.13127808	% 
	 February 15, 2021
	  	 	2.86087952	% 
	 August 15, 2021
	  	 	2.86087952	% 
	 February 15, 2022
	  	 	2.86087952	% 
	 August 15, 2022
	  	 	2.04348537	% 
	 February 15, 2023
	  	 	2.04348537	% 
	 August 15, 2023
	  	 	2.04348537	% 
	 February 15, 2024
	  	 	2.04348537	% 
	 August 15, 2024
	  	 	2.04348537	% 
	 February 15, 2025
	  	 	2.04348537	% 
	 August 15, 2025
	  	 	2.04348537	% 
	 February 15, 2026
	  	 	52.67630047	% 
	 August 15, 2026
	  	 	0.00000000	% 
	 February 15, 2027
	  	 	0.00000000	% 
	 August 15, 2027
	  	 	0.00000000	% 
	 February 15, 2028
	  	 	0.00000000	% 
	 August 15, 2028
	  	 	0.00000000	% 
	 February 15, 2029
	  	 	0.00000000	% 
	 August 15, 2029
	  	 	0.00000000	% 
	 February 15, 2030
	  	 	0.00000000	% 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	0.00000000	% 

  

					
		  	Sch. III-41	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series AA Equipment Notes

Airbus A320-200

N652NK
	 
		
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	0.00000000	% 
	 February 15, 2019
	  	 	2.79237845	% 
	 August 15, 2019
	  	 	2.79237845	% 
	 February 15, 2020
	  	 	2.79237845	% 
	 August 15, 2020
	  	 	2.79237845	% 
	 February 15, 2021
	  	 	2.79237845	% 
	 August 15, 2021
	  	 	2.79237845	% 
	 February 15, 2022
	  	 	2.79237845	% 
	 August 15, 2022
	  	 	2.79237845	% 
	 February 15, 2023
	  	 	2.79237845	% 
	 August 15, 2023
	  	 	2.79237845	% 
	 February 15, 2024
	  	 	2.52025279	% 
	 August 15, 2024
	  	 	2.52025285	% 
	 February 15, 2025
	  	 	2.52025279	% 
	 August 15, 2025
	  	 	2.52025285	% 
	 February 15, 2026
	  	 	2.52025279	% 
	 August 15, 2026
	  	 	2.52025285	% 
	 February 15, 2027
	  	 	2.52025279	% 
	 August 15, 2027
	  	 	2.52025279	% 
	 February 15, 2028
	  	 	2.52025285	% 
	 August 15, 2028
	  	 	2.52025279	% 
	 February 15, 2029
	  	 	2.52025285	% 
	 August 15, 2029
	  	 	2.52025279	% 
	 February 15, 2030
	  	 	41.83318172	% 

  

					
		  	Sch. III-42	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series A Equipment Notes

Airbus A320-200

N652NK
	 
		
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	0.00000000	% 
	 February 15, 2019
	  	 	2.79237845	% 
	 August 15, 2019
	  	 	2.79237845	% 
	 February 15, 2020
	  	 	2.79237845	% 
	 August 15, 2020
	  	 	2.79237845	% 
	 February 15, 2021
	  	 	2.79237845	% 
	 August 15, 2021
	  	 	2.79237845	% 
	 February 15, 2022
	  	 	2.79237845	% 
	 August 15, 2022
	  	 	2.79237845	% 
	 February 15, 2023
	  	 	2.79237845	% 
	 August 15, 2023
	  	 	2.79237845	% 
	 February 15, 2024
	  	 	2.52025279	% 
	 August 15, 2024
	  	 	2.52025279	% 
	 February 15, 2025
	  	 	2.52025279	% 
	 August 15, 2025
	  	 	2.52025296	% 
	 February 15, 2026
	  	 	2.52025279	% 
	 August 15, 2026
	  	 	2.52025279	% 
	 February 15, 2027
	  	 	2.52025279	% 
	 August 15, 2027
	  	 	2.52025279	% 
	 February 15, 2028
	  	 	2.52025279	% 
	 August 15, 2028
	  	 	2.52025279	% 
	 February 15, 2029
	  	 	2.52025296	% 
	 August 15, 2029
	  	 	2.52025279	% 
	 February 15, 2030
	  	 	41.83318167	% 

  

					
		  	Sch. III-43	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series B Equipment Notes

Airbus A320-200

N652NK
	 
		
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	0.00000000	% 
	 February 15, 2019
	  	 	7.08705362	% 
	 August 15, 2019
	  	 	7.08705346	% 
	 February 15, 2020
	  	 	5.13127824	% 
	 August 15, 2020
	  	 	5.13127808	% 
	 February 15, 2021
	  	 	2.86087952	% 
	 August 15, 2021
	  	 	2.86087952	% 
	 February 15, 2022
	  	 	2.86087952	% 
	 August 15, 2022
	  	 	2.04348537	% 
	 February 15, 2023
	  	 	2.04348537	% 
	 August 15, 2023
	  	 	2.04348537	% 
	 February 15, 2024
	  	 	2.04348537	% 
	 August 15, 2024
	  	 	2.04348537	% 
	 February 15, 2025
	  	 	2.04348537	% 
	 August 15, 2025
	  	 	2.04348537	% 
	 February 15, 2026
	  	 	52.67630047	% 
	 August 15, 2026
	  	 	0.00000000	% 
	 February 15, 2027
	  	 	0.00000000	% 
	 August 15, 2027
	  	 	0.00000000	% 
	 February 15, 2028
	  	 	0.00000000	% 
	 August 15, 2028
	  	 	0.00000000	% 
	 February 15, 2029
	  	 	0.00000000	% 
	 August 15, 2029
	  	 	0.00000000	% 
	 February 15, 2030
	  	 	0.00000000	% 

  

					
		  	Sch. III-44	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series AA Equipment Notes

Airbus A320-200

N653NK
	 
		
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	0.00000000	% 
	 February 15, 2019
	  	 	2.79237845	% 
	 August 15, 2019
	  	 	2.79237845	% 
	 February 15, 2020
	  	 	2.79237845	% 
	 August 15, 2020
	  	 	2.79237845	% 
	 February 15, 2021
	  	 	2.79237845	% 
	 August 15, 2021
	  	 	2.79237845	% 
	 February 15, 2022
	  	 	2.79237845	% 
	 August 15, 2022
	  	 	2.79237845	% 
	 February 15, 2023
	  	 	2.79237845	% 
	 August 15, 2023
	  	 	2.79237845	% 
	 February 15, 2024
	  	 	2.52025278	% 
	 August 15, 2024
	  	 	2.52025284	% 
	 February 15, 2025
	  	 	2.52025278	% 
	 August 15, 2025
	  	 	2.52025284	% 
	 February 15, 2026
	  	 	2.52025284	% 
	 August 15, 2026
	  	 	2.52025278	% 
	 February 15, 2027
	  	 	2.52025284	% 
	 August 15, 2027
	  	 	2.52025278	% 
	 February 15, 2028
	  	 	2.52025284	% 
	 August 15, 2028
	  	 	2.52025284	% 
	 February 15, 2029
	  	 	2.52025278	% 
	 August 15, 2029
	  	 	2.52025284	% 
	 February 15, 2030
	  	 	41.83318170	% 

  

					
		  	Sch. III-45	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series A Equipment Notes

Airbus A320-200

N653NK
	 
		
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	0.00000000	% 
	 February 15, 2019
	  	 	2.79237856	% 
	 August 15, 2019
	  	 	2.79237840	% 
	 February 15, 2020
	  	 	2.79237840	% 
	 August 15, 2020
	  	 	2.79237856	% 
	 February 15, 2021
	  	 	2.79237840	% 
	 August 15, 2021
	  	 	2.79237840	% 
	 February 15, 2022
	  	 	2.79237856	% 
	 August 15, 2022
	  	 	2.79237840	% 
	 February 15, 2023
	  	 	2.79237840	% 
	 August 15, 2023
	  	 	2.79237856	% 
	 February 15, 2024
	  	 	2.52025278	% 
	 August 15, 2024
	  	 	2.52025278	% 
	 February 15, 2025
	  	 	2.52025278	% 
	 August 15, 2025
	  	 	2.52025278	% 
	 February 15, 2026
	  	 	2.52025295	% 
	 August 15, 2026
	  	 	2.52025278	% 
	 February 15, 2027
	  	 	2.52025278	% 
	 August 15, 2027
	  	 	2.52025278	% 
	 February 15, 2028
	  	 	2.52025278	% 
	 August 15, 2028
	  	 	2.52025295	% 
	 February 15, 2029
	  	 	2.52025278	% 
	 August 15, 2029
	  	 	2.52025278	% 
	 February 15, 2030
	  	 	41.83318167	% 

  

					
		  	Sch. III-46	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series B Equipment Notes

Airbus A320-200

N653NK
	 
		
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	0.00000000	% 
	 February 15, 2019
	  	 	7.08760188	% 
	 August 15, 2019
	  	 	7.08760188	% 
	 February 15, 2020
	  	 	5.13167502	% 
	 August 15, 2020
	  	 	5.13167518	% 
	 February 15, 2021
	  	 	2.86110087	% 
	 August 15, 2021
	  	 	2.86110087	% 
	 February 15, 2022
	  	 	2.86110087	% 
	 August 15, 2022
	  	 	2.04364343	% 
	 February 15, 2023
	  	 	2.04364343	% 
	 August 15, 2023
	  	 	2.04364343	% 
	 February 15, 2024
	  	 	2.04364360	% 
	 August 15, 2024
	  	 	2.04364343	% 
	 February 15, 2025
	  	 	2.04364343	% 
	 August 15, 2025
	  	 	2.04364343	% 
	 February 15, 2026
	  	 	52.67263923	% 
	 August 15, 2026
	  	 	0.00000000	% 
	 February 15, 2027
	  	 	0.00000000	% 
	 August 15, 2027
	  	 	0.00000000	% 
	 February 15, 2028
	  	 	0.00000000	% 
	 August 15, 2028
	  	 	0.00000000	% 
	 February 15, 2029
	  	 	0.00000000	% 
	 August 15, 2029
	  	 	0.00000000	% 
	 February 15, 2030
	  	 	0.00000000	% 

  

					
		  	Sch. III-47	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series AA Equipment Notes

Airbus A321-200

N683NK
	 
		
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	0.00000000	% 
	 February 15, 2019
	  	 	2.79232835	% 
	 August 15, 2019
	  	 	2.79232840	% 
	 February 15, 2020
	  	 	2.79232835	% 
	 August 15, 2020
	  	 	2.79232835	% 
	 February 15, 2021
	  	 	2.79232835	% 
	 August 15, 2021
	  	 	2.79232840	% 
	 February 15, 2022
	  	 	2.79232835	% 
	 August 15, 2022
	  	 	2.79232835	% 
	 February 15, 2023
	  	 	2.79232835	% 
	 August 15, 2023
	  	 	2.79232835	% 
	 February 15, 2024
	  	 	2.52020764	% 
	 August 15, 2024
	  	 	2.52020759	% 
	 February 15, 2025
	  	 	2.52020764	% 
	 August 15, 2025
	  	 	2.52020759	% 
	 February 15, 2026
	  	 	2.52020764	% 
	 August 15, 2026
	  	 	2.52020759	% 
	 February 15, 2027
	  	 	2.52020764	% 
	 August 15, 2027
	  	 	2.52020759	% 
	 February 15, 2028
	  	 	2.52020759	% 
	 August 15, 2028
	  	 	2.52020764	% 
	 February 15, 2029
	  	 	2.52020759	% 
	 August 15, 2029
	  	 	2.52020764	% 
	 February 15, 2030
	  	 	41.83422499	% 

  

					
		  	Sch. III-48	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series A Equipment Notes

Airbus A321-200

N683NK
	 
		
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	0.00000000	% 
	 February 15, 2019
	  	 	2.79245366	% 
	 August 15, 2019
	  	 	2.79245352	% 
	 February 15, 2020
	  	 	2.79245366	% 
	 August 15, 2020
	  	 	2.79245352	% 
	 February 15, 2021
	  	 	2.79245352	% 
	 August 15, 2021
	  	 	2.79245366	% 
	 February 15, 2022
	  	 	2.79245352	% 
	 August 15, 2022
	  	 	2.79245366	% 
	 February 15, 2023
	  	 	2.79245352	% 
	 August 15, 2023
	  	 	2.79245352	% 
	 February 15, 2024
	  	 	2.52032069	% 
	 August 15, 2024
	  	 	2.52032056	% 
	 February 15, 2025
	  	 	2.52032069	% 
	 August 15, 2025
	  	 	2.52032056	% 
	 February 15, 2026
	  	 	2.52032069	% 
	 August 15, 2026
	  	 	2.52032056	% 
	 February 15, 2027
	  	 	2.52032069	% 
	 August 15, 2027
	  	 	2.52032056	% 
	 February 15, 2028
	  	 	2.52032069	% 
	 August 15, 2028
	  	 	2.52032056	% 
	 February 15, 2029
	  	 	2.52032069	% 
	 August 15, 2029
	  	 	2.52032056	% 
	 February 15, 2030
	  	 	41.83161672	% 

  

					
		  	Sch. III-49	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series B Equipment Notes

Airbus A321-200

N683NK
	 
		
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	0.00000000	% 
	 February 15, 2019
	  	 	7.08786788	% 
	 August 15, 2019
	  	 	7.08786788	% 
	 February 15, 2020
	  	 	5.13186784	% 
	 August 15, 2020
	  	 	5.13186784	% 
	 February 15, 2021
	  	 	2.86120813	% 
	 August 15, 2021
	  	 	2.86120827	% 
	 February 15, 2022
	  	 	2.86120827	% 
	 August 15, 2022
	  	 	2.04372025	% 
	 February 15, 2023
	  	 	2.04372011	% 
	 August 15, 2023
	  	 	2.04372025	% 
	 February 15, 2024
	  	 	2.04372025	% 
	 August 15, 2024
	  	 	2.04372011	% 
	 February 15, 2025
	  	 	2.04372025	% 
	 August 15, 2025
	  	 	2.04372011	% 
	 February 15, 2026
	  	 	52.67086254	% 
	 August 15, 2026
	  	 	0.00000000	% 
	 February 15, 2027
	  	 	0.00000000	% 
	 August 15, 2027
	  	 	0.00000000	% 
	 February 15, 2028
	  	 	0.00000000	% 
	 August 15, 2028
	  	 	0.00000000	% 
	 February 15, 2029
	  	 	0.00000000	% 
	 August 15, 2029
	  	 	0.00000000	% 
	 February 15, 2030
	  	 	0.00000000	% 

  

					
		  	Sch. III-50	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series AA Equipment Notes

Airbus A321-200

N684NK
	 
		
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	0.00000000	% 
	 February 15, 2019
	  	 	2.79232835	% 
	 August 15, 2019
	  	 	2.79232840	% 
	 February 15, 2020
	  	 	2.79232835	% 
	 August 15, 2020
	  	 	2.79232835	% 
	 February 15, 2021
	  	 	2.79232835	% 
	 August 15, 2021
	  	 	2.79232840	% 
	 February 15, 2022
	  	 	2.79232835	% 
	 August 15, 2022
	  	 	2.79232835	% 
	 February 15, 2023
	  	 	2.79232835	% 
	 August 15, 2023
	  	 	2.79232835	% 
	 February 15, 2024
	  	 	2.52020764	% 
	 August 15, 2024
	  	 	2.52020759	% 
	 February 15, 2025
	  	 	2.52020764	% 
	 August 15, 2025
	  	 	2.52020759	% 
	 February 15, 2026
	  	 	2.52020764	% 
	 August 15, 2026
	  	 	2.52020759	% 
	 February 15, 2027
	  	 	2.52020764	% 
	 August 15, 2027
	  	 	2.52020759	% 
	 February 15, 2028
	  	 	2.52020759	% 
	 August 15, 2028
	  	 	2.52020764	% 
	 February 15, 2029
	  	 	2.52020759	% 
	 August 15, 2029
	  	 	2.52020764	% 
	 February 15, 2030
	  	 	41.83422499	% 

  

					
		  	Sch. III-51	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series A Equipment Notes

Airbus A321-200

N684NK
	 
		
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	0.00000000	% 
	 February 15, 2019
	  	 	2.79245366	% 
	 August 15, 2019
	  	 	2.79245352	% 
	 February 15, 2020
	  	 	2.79245366	% 
	 August 15, 2020
	  	 	2.79245352	% 
	 February 15, 2021
	  	 	2.79245352	% 
	 August 15, 2021
	  	 	2.79245366	% 
	 February 15, 2022
	  	 	2.79245352	% 
	 August 15, 2022
	  	 	2.79245366	% 
	 February 15, 2023
	  	 	2.79245352	% 
	 August 15, 2023
	  	 	2.79245352	% 
	 February 15, 2024
	  	 	2.52032069	% 
	 August 15, 2024
	  	 	2.52032056	% 
	 February 15, 2025
	  	 	2.52032069	% 
	 August 15, 2025
	  	 	2.52032056	% 
	 February 15, 2026
	  	 	2.52032069	% 
	 August 15, 2026
	  	 	2.52032056	% 
	 February 15, 2027
	  	 	2.52032069	% 
	 August 15, 2027
	  	 	2.52032056	% 
	 February 15, 2028
	  	 	2.52032069	% 
	 August 15, 2028
	  	 	2.52032056	% 
	 February 15, 2029
	  	 	2.52032069	% 
	 August 15, 2029
	  	 	2.52032056	% 
	 February 15, 2030
	  	 	41.83161672	% 

  

					
		  	Sch. III-52	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series B Equipment Notes

Airbus A321-200

N684NK
	 
		
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	0.00000000	% 
	 February 15, 2019
	  	 	7.08786788	% 
	 August 15, 2019
	  	 	7.08786788	% 
	 February 15, 2020
	  	 	5.13186784	% 
	 August 15, 2020
	  	 	5.13186784	% 
	 February 15, 2021
	  	 	2.86120813	% 
	 August 15, 2021
	  	 	2.86120827	% 
	 February 15, 2022
	  	 	2.86120827	% 
	 August 15, 2022
	  	 	2.04372025	% 
	 February 15, 2023
	  	 	2.04372011	% 
	 August 15, 2023
	  	 	2.04372025	% 
	 February 15, 2024
	  	 	2.04372025	% 
	 August 15, 2024
	  	 	2.04372011	% 
	 February 15, 2025
	  	 	2.04372025	% 
	 August 15, 2025
	  	 	2.04372011	% 
	 February 15, 2026
	  	 	52.67086254	% 
	 August 15, 2026
	  	 	0.00000000	% 
	 February 15, 2027
	  	 	0.00000000	% 
	 August 15, 2027
	  	 	0.00000000	% 
	 February 15, 2028
	  	 	0.00000000	% 
	 August 15, 2028
	  	 	0.00000000	% 
	 February 15, 2029
	  	 	0.00000000	% 
	 August 15, 2029
	  	 	0.00000000	% 
	 February 15, 2030
	  	 	0.00000000	% 

  

					
		  	Sch. III-53	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series AA Equipment Notes

Airbus A321-200

N685NK
	 
		
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	0.00000000	% 
	 February 15, 2019
	  	 	2.79232835	% 
	 August 15, 2019
	  	 	2.79232840	% 
	 February 15, 2020
	  	 	2.79232835	% 
	 August 15, 2020
	  	 	2.79232835	% 
	 February 15, 2021
	  	 	2.79232835	% 
	 August 15, 2021
	  	 	2.79232840	% 
	 February 15, 2022
	  	 	2.79232835	% 
	 August 15, 2022
	  	 	2.79232835	% 
	 February 15, 2023
	  	 	2.79232835	% 
	 August 15, 2023
	  	 	2.79232835	% 
	 February 15, 2024
	  	 	2.52020764	% 
	 August 15, 2024
	  	 	2.52020759	% 
	 February 15, 2025
	  	 	2.52020764	% 
	 August 15, 2025
	  	 	2.52020759	% 
	 February 15, 2026
	  	 	2.52020764	% 
	 August 15, 2026
	  	 	2.52020759	% 
	 February 15, 2027
	  	 	2.52020764	% 
	 August 15, 2027
	  	 	2.52020759	% 
	 February 15, 2028
	  	 	2.52020759	% 
	 August 15, 2028
	  	 	2.52020764	% 
	 February 15, 2029
	  	 	2.52020759	% 
	 August 15, 2029
	  	 	2.52020764	% 
	 February 15, 2030
	  	 	41.83422499	% 

  

					
		  	Sch. III-54	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series A Equipment Notes

Airbus A321-200

N685NK
	 
		
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	0.00000000	% 
	 February 15, 2019
	  	 	2.79245366	% 
	 August 15, 2019
	  	 	2.79245352	% 
	 February 15, 2020
	  	 	2.79245366	% 
	 August 15, 2020
	  	 	2.79245352	% 
	 February 15, 2021
	  	 	2.79245352	% 
	 August 15, 2021
	  	 	2.79245366	% 
	 February 15, 2022
	  	 	2.79245352	% 
	 August 15, 2022
	  	 	2.79245366	% 
	 February 15, 2023
	  	 	2.79245352	% 
	 August 15, 2023
	  	 	2.79245352	% 
	 February 15, 2024
	  	 	2.52032069	% 
	 August 15, 2024
	  	 	2.52032056	% 
	 February 15, 2025
	  	 	2.52032069	% 
	 August 15, 2025
	  	 	2.52032056	% 
	 February 15, 2026
	  	 	2.52032069	% 
	 August 15, 2026
	  	 	2.52032056	% 
	 February 15, 2027
	  	 	2.52032069	% 
	 August 15, 2027
	  	 	2.52032056	% 
	 February 15, 2028
	  	 	2.52032069	% 
	 August 15, 2028
	  	 	2.52032056	% 
	 February 15, 2029
	  	 	2.52032069	% 
	 August 15, 2029
	  	 	2.52032056	% 
	 February 15, 2030
	  	 	41.83161672	% 

  

					
		  	Sch. III-55	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series B Equipment Notes

Airbus A321-200

N685NK
	 
		
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	0.00000000	% 
	 February 15, 2019
	  	 	7.08786788	% 
	 August 15, 2019
	  	 	7.08786788	% 
	 February 15, 2020
	  	 	5.13186784	% 
	 August 15, 2020
	  	 	5.13186784	% 
	 February 15, 2021
	  	 	2.86120813	% 
	 August 15, 2021
	  	 	2.86120827	% 
	 February 15, 2022
	  	 	2.86120827	% 
	 August 15, 2022
	  	 	2.04372025	% 
	 February 15, 2023
	  	 	2.04372011	% 
	 August 15, 2023
	  	 	2.04372025	% 
	 February 15, 2024
	  	 	2.04372025	% 
	 August 15, 2024
	  	 	2.04372011	% 
	 February 15, 2025
	  	 	2.04372025	% 
	 August 15, 2025
	  	 	2.04372011	% 
	 February 15, 2026
	  	 	52.67086254	% 
	 August 15, 2026
	  	 	0.00000000	% 
	 February 15, 2027
	  	 	0.00000000	% 
	 August 15, 2027
	  	 	0.00000000	% 
	 February 15, 2028
	  	 	0.00000000	% 
	 August 15, 2028
	  	 	0.00000000	% 
	 February 15, 2029
	  	 	0.00000000	% 
	 August 15, 2029
	  	 	0.00000000	% 
	 February 15, 2030
	  	 	0.00000000	% 

  

					
		  	Sch. III-56	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series AA Equipment Notes

Airbus A321-200

N686NK
	 
		
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	0.00000000	% 
	 February 15, 2019
	  	 	2.79242851	% 
	 August 15, 2019
	  	 	2.79242846	% 
	 February 15, 2020
	  	 	2.79242851	% 
	 August 15, 2020
	  	 	2.79242851	% 
	 February 15, 2021
	  	 	2.79242851	% 
	 August 15, 2021
	  	 	2.79242851	% 
	 February 15, 2022
	  	 	2.79242846	% 
	 August 15, 2022
	  	 	2.79242851	% 
	 February 15, 2023
	  	 	2.79242851	% 
	 August 15, 2023
	  	 	2.79242851	% 
	 February 15, 2024
	  	 	2.52029797	% 
	 August 15, 2024
	  	 	2.52029801	% 
	 February 15, 2025
	  	 	2.52029797	% 
	 August 15, 2025
	  	 	2.52029801	% 
	 February 15, 2026
	  	 	2.52029797	% 
	 August 15, 2026
	  	 	2.52029801	% 
	 February 15, 2027
	  	 	2.52029797	% 
	 August 15, 2027
	  	 	2.52029801	% 
	 February 15, 2028
	  	 	2.52029797	% 
	 August 15, 2028
	  	 	2.52029801	% 
	 February 15, 2029
	  	 	2.52029797	% 
	 August 15, 2029
	  	 	2.52029801	% 
	 February 15, 2030
	  	 	41.83213915	% 

  

					
		  	Sch. III-57	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series A Equipment Notes

Airbus A321-200

N686NK
	 
		
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	0.00000000	% 
	 February 15, 2019
	  	 	2.79230339	% 
	 August 15, 2019
	  	 	2.79230339	% 
	 February 15, 2020
	  	 	2.79230339	% 
	 August 15, 2020
	  	 	2.79230339	% 
	 February 15, 2021
	  	 	2.79230339	% 
	 August 15, 2021
	  	 	2.79230339	% 
	 February 15, 2022
	  	 	2.79230325	% 
	 August 15, 2022
	  	 	2.79230339	% 
	 February 15, 2023
	  	 	2.79230339	% 
	 August 15, 2023
	  	 	2.79230339	% 
	 February 15, 2024
	  	 	2.52018513	% 
	 August 15, 2024
	  	 	2.52018499	% 
	 February 15, 2025
	  	 	2.52018513	% 
	 August 15, 2025
	  	 	2.52018499	% 
	 February 15, 2026
	  	 	2.52018513	% 
	 August 15, 2026
	  	 	2.52018499	% 
	 February 15, 2027
	  	 	2.52018513	% 
	 August 15, 2027
	  	 	2.52018499	% 
	 February 15, 2028
	  	 	2.52018513	% 
	 August 15, 2028
	  	 	2.52018499	% 
	 February 15, 2029
	  	 	2.52018513	% 
	 August 15, 2029
	  	 	2.52018499	% 
	 February 15, 2030
	  	 	41.83474554	% 

  

					
		  	Sch. III-58	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series B Equipment Notes

Airbus A321-200

N686NK
	 
		
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	0.00000000	% 
	 February 15, 2019
	  	 	7.08709900	% 
	 August 15, 2019
	  	 	7.08709886	% 
	 February 15, 2020
	  	 	5.13131111	% 
	 August 15, 2020
	  	 	5.13131098	% 
	 February 15, 2021
	  	 	2.86089785	% 
	 August 15, 2021
	  	 	2.86089785	% 
	 February 15, 2022
	  	 	2.86089785	% 
	 August 15, 2022
	  	 	2.04349843	% 
	 February 15, 2023
	  	 	2.04349843	% 
	 August 15, 2023
	  	 	2.04349843	% 
	 February 15, 2024
	  	 	2.04349856	% 
	 August 15, 2024
	  	 	2.04349843	% 
	 February 15, 2025
	  	 	2.04349843	% 
	 August 15, 2025
	  	 	2.04349843	% 
	 February 15, 2026
	  	 	52.67599736	% 
	 August 15, 2026
	  	 	0.00000000	% 
	 February 15, 2027
	  	 	0.00000000	% 
	 August 15, 2027
	  	 	0.00000000	% 
	 February 15, 2028
	  	 	0.00000000	% 
	 August 15, 2028
	  	 	0.00000000	% 
	 February 15, 2029
	  	 	0.00000000	% 
	 August 15, 2029
	  	 	0.00000000	% 
	 February 15, 2030
	  	 	0.00000000	% 

  

					
		  	Sch. III-59	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series AA Equipment Notes

Airbus A321-200

N687NK
	 
		
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	0.00000000	% 
	 February 15, 2019
	  	 	2.79242851	% 
	 August 15, 2019
	  	 	2.79242846	% 
	 February 15, 2020
	  	 	2.79242851	% 
	 August 15, 2020
	  	 	2.79242851	% 
	 February 15, 2021
	  	 	2.79242851	% 
	 August 15, 2021
	  	 	2.79242851	% 
	 February 15, 2022
	  	 	2.79242846	% 
	 August 15, 2022
	  	 	2.79242851	% 
	 February 15, 2023
	  	 	2.79242851	% 
	 August 15, 2023
	  	 	2.79242851	% 
	 February 15, 2024
	  	 	2.52029797	% 
	 August 15, 2024
	  	 	2.52029801	% 
	 February 15, 2025
	  	 	2.52029797	% 
	 August 15, 2025
	  	 	2.52029801	% 
	 February 15, 2026
	  	 	2.52029797	% 
	 August 15, 2026
	  	 	2.52029801	% 
	 February 15, 2027
	  	 	2.52029797	% 
	 August 15, 2027
	  	 	2.52029801	% 
	 February 15, 2028
	  	 	2.52029797	% 
	 August 15, 2028
	  	 	2.52029801	% 
	 February 15, 2029
	  	 	2.52029797	% 
	 August 15, 2029
	  	 	2.52029801	% 
	 February 15, 2030
	  	 	41.83213915	% 

  

					
		  	Sch. III-60	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series A Equipment Notes

Airbus A321-200

N687NK
	 
		
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	0.00000000	% 
	 February 15, 2019
	  	 	2.79230339	% 
	 August 15, 2019
	  	 	2.79230339	% 
	 February 15, 2020
	  	 	2.79230339	% 
	 August 15, 2020
	  	 	2.79230339	% 
	 February 15, 2021
	  	 	2.79230339	% 
	 August 15, 2021
	  	 	2.79230339	% 
	 February 15, 2022
	  	 	2.79230325	% 
	 August 15, 2022
	  	 	2.79230339	% 
	 February 15, 2023
	  	 	2.79230339	% 
	 August 15, 2023
	  	 	2.79230339	% 
	 February 15, 2024
	  	 	2.52018513	% 
	 August 15, 2024
	  	 	2.52018499	% 
	 February 15, 2025
	  	 	2.52018513	% 
	 August 15, 2025
	  	 	2.52018499	% 
	 February 15, 2026
	  	 	2.52018513	% 
	 August 15, 2026
	  	 	2.52018499	% 
	 February 15, 2027
	  	 	2.52018513	% 
	 August 15, 2027
	  	 	2.52018499	% 
	 February 15, 2028
	  	 	2.52018513	% 
	 August 15, 2028
	  	 	2.52018499	% 
	 February 15, 2029
	  	 	2.52018513	% 
	 August 15, 2029
	  	 	2.52018499	% 
	 February 15, 2030
	  	 	41.83474554	% 

  

					
		  	Sch. III-61	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

					
	 Series B Equipment Notes

Airbus A321-200

N687NK
	 
		
	 Payment Date
	  	Percentage of Original
Principal Amount to be
Paid	 
	 At Issuance
	  	 	0.00000000	% 
	 August 15, 2018
	  	 	0.00000000	% 
	 February 15, 2019
	  	 	7.08709900	% 
	 August 15, 2019
	  	 	7.08709886	% 
	 February 15, 2020
	  	 	5.13131111	% 
	 August 15, 2020
	  	 	5.13131098	% 
	 February 15, 2021
	  	 	2.86089785	% 
	 August 15, 2021
	  	 	2.86089785	% 
	 February 15, 2022
	  	 	2.86089785	% 
	 August 15, 2022
	  	 	2.04349843	% 
	 February 15, 2023
	  	 	2.04349843	% 
	 August 15, 2023
	  	 	2.04349843	% 
	 February 15, 2024
	  	 	2.04349856	% 
	 August 15, 2024
	  	 	2.04349843	% 
	 February 15, 2025
	  	 	2.04349843	% 
	 August 15, 2025
	  	 	2.04349843	% 
	 February 15, 2026
	  	 	52.67599736	% 
	 August 15, 2026
	  	 	0.00000000	% 
	 February 15, 2027
	  	 	0.00000000	% 
	 August 15, 2027
	  	 	0.00000000	% 
	 February 15, 2028
	  	 	0.00000000	% 
	 August 15, 2028
	  	 	0.00000000	% 
	 February 15, 2029
	  	 	0.00000000	% 
	 August 15, 2029
	  	 	0.00000000	% 
	 February 15, 2030
	  	 	0.00000000	% 

  

					
		  	Sch. III-62	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 Indenture for Each Aircraft 

Debt Rate (as such term is defined in clause (i) of the definition of “Debt Rate” in the form of Indenture and Security Agreement included as
Exhibit C to the Note Purchase Agreement (as such form may be amended, supplemented or otherwise modified from time to time in accordance with the terms of the Note Purchase Agreement, the “Indenture Form”)) (x) for Series AA
(computed on the basis of a 360-day year consisting of twelve 30-day months, payable semi-annually in arrears): 3.375%, (y) for Series A (computed on the basis of a 360-day year consisting of twelve 30-day months, payable semi-annually in arrears): 3.650% and (z) for Series B (computed on the basis of a
360-day year consisting of twelve 30-day months, payable semi-annually in arrears): 3.800%. 
  

			
	Past Due Rate:	  	The lesser of (a) with respect to (i) any payment made to a Noteholder (as such term is defined in the Indenture Form) under any Series of Equipment Notes relating to the applicable Aircraft, the Debt Rate
then applicable to such Series plus 1% and (ii) any other payment made under any Operative Document (as such term is defined in the Indenture Form) to any other Person, the Debt Rate (as such term is defined in clause (ii) of the
definition of “Debt Rate” in the Indenture Form) plus 1% (computed on the basis of a year of 360 days comprised of twelve 30-day months) and (b) the maximum rate permitted by applicable
law.
		
	Payment Dates:	  	February 15 and August 15 commencing with the later of August 15, 2018 and the first such date occurring after the date of issuance of the Equipment Notes relating to such Aircraft.
		
	Make-Whole Amount:	  	As provided in Article II of the Indenture Form.
		
	Redemption:	  	As provided in Article II of the Indenture Form.
		
	All-risk hull insurance:	  	Not less than 110% of the unpaid principal amount of the Equipment Notes relating to such Aircraft, subject to the Company’s right to self-insure on terms no more favorable to the Company in any material respect than those set
forth in Section 7.06 of the Indenture Form.

 Participation Agreement for Each Aircraft 

The applicable Loan Trustee, the Subordination Agent, the Liquidity Providers, the Pass Through Trustees and the Escrow Agent shall be indemnified against
Claims (as such term is defined in the Participation Agreement Form referred to below) to the extent set forth in Section 4.02 of the form of the Participation Agreement included as Exhibit B to this Note Purchase Agreement (as
such form may be amended, supplemented or otherwise modified from time to 

  

					
		  	Sch. III-63	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 
time in accordance with the terms of the Note Purchase Agreement, the “Participation Agreement Form”). 

Prohibited Modifications 
  

	1.	The parties may not modify in any material adverse respect the Granting Clause of the Indenture Form so as to deprive the Noteholders or the Related Noteholders (as defined in the Indenture Form) of a first priority
security interest in and mortgage lien on the Aircraft (as defined in the Indenture Form) or to eliminate any of the obligations intended to be secured thereby, or modify the Airframe Warranties Agreement so as to have the “Controlling
Party” be any party other than the Loan Trustee on the Closing Date or otherwise modify in any material adverse respect as regards the interests of the Noteholders, the Subordination Agent, the Liquidity Providers or the Loan Trustee (as
defined in the Indenture Form) the provisions of Article II or Article III, or Sections 7.05(a) or 7.05(b) (insofar as such Sections relate to conditions to “Airframe” and “Engine” replacements), or
Sections 4.01, 4.02, 5.02, 9.02, 10.04, 10.11, 10.12 or 10.15 of the Indenture Form or the provisions of the proviso to the second full sentence of Section 7.02(e) of
the Indenture Form as regards the rights of the Loan Trustee (as defined in the Indenture Form) thereunder or the definition of “Make-Whole Amount” in Annex A to the Indenture Form. 

 

	2.	The parties may not modify in any material adverse respect as regards the interests of the Noteholders, the Subordination Agent, the Liquidity Providers or the Loan Trustee (as defined in the Participation Agreement
Form) the provisions of Sections 3.01(d), 3.01(f)(i), 3.01(r), 4.01(g), 4.01(h), 6.01(e), 6.01(f), 6.02(b), 6.02(c), 6.02(f), 7.03, 7.08 or 7.12 of the
Participation Agreement Form, or the first sentence of Section 6.02(c) of the Participation Agreement Form, or the provisions of Sections 3.01(g), (h) or (i) of the Participation Agreement Form so
as to eliminate the requirement to deliver to the Noteholders or the Loan Trustee (as defined in the Participation Agreement Form), as the case may be, the legal opinions to be provided to such Persons thereunder (recognizing that the lawyers
rendering such opinions may be changed) or otherwise modify the terms of the Participation Agreement Form to deprive the Pass Through Trustees, the Subordination Agent, the Liquidity Providers or the Loan Trustee (as defined in the Participation
Agreement Form) of any indemnity, or right of reimbursement, for Claims in its favor. 

  

	3.	 Nothing in the two immediately preceding paragraphs shall prohibit any modification of the Indenture Form or the
Participation Agreement Form to give effect to (a) the adjustment to original principal amount and amortization schedule for any Early Delivery Aircraft financed on or after August 15, 2018, as contemplated by the Note Purchase Agreement,
(b) the redemption of any Series A Equipment Notes or Series B Equipment Notes (or any series of Additional Series Equipment Notes) with respect to all of the Aircraft for which Series A Equipment Notes or Series B Equipment Notes (or such
series of Additional Series Equipment Notes) are at the time outstanding and issuance, with respect to any or all of the Aircraft, of new Equipment Notes with the same series designation as, but with terms that may be the same as or different from
those of, the 

  

					
		  	Sch. III-64	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

	 	
redeemed Equipment Notes, (c) the issuance of one or more series of Additional Series Equipment Notes with respect to any or all of the Aircraft (including, for the avoidance of doubt,
multiple issuances at the same or different times resulting in more than one series of Additional Series Equipment Notes being outstanding at any time), or (d) following the payment in full of Series A Equipment Notes or Series B Equipment
Notes (or any series of Additional Series Equipment Notes) with respect to all of the Aircraft for which Series A Equipment Notes or Series B Equipment Notes (or such series of Additional Series Equipment Notes) are at the time outstanding, the
issuance, with respect to any or all of the Aircraft, of new Equipment Notes with the same series designation as, but with terms that may be the same as or different from those of, such Equipment Notes that have been paid in full, or the issuance of
pass through certificates by any pass through trust that acquires any such new Series A Equipment Notes or new Series B Equipment Notes or Additional Series Equipment Notes or new Additional Series Equipment Notes, as applicable, or to provide for
any credit support for any pass through certificates relating to any such new Series A Equipment Notes or new Series B Equipment Notes or Additional Series Equipment Notes or new Additional Series Equipment Notes, as applicable, in each case, as
provided in Section 4(a)(v) of the Note Purchase Agreement. 

  

					
		  	Sch. III-65	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 ANNEX A to 

NOTE PURCHASE AGREEMENT 

DEFINITIONS 

(a) Certain Rules of Construction. Unless the context otherwise requires, the following rules of construction shall
apply for all purposes of the Note Purchase Agreement (including this Annex A). 
 (i) Singular and Plural. The
definitions stated in this Annex A apply equally to both the singular and the plural forms of the terms defined. 

(ii) References to Parts. All references in the Note Purchase Agreement to designated “Sections”,
“Subsections”, “Schedules”, “Exhibits”, “Annexes” and other subdivisions are to the designated Section, Subsection, Schedule, Exhibit, Annex or other subdivision of the Note Purchase Agreement, unless
otherwise specifically stated. 
 (iii) Reference to the Whole. The words “herein”, “hereof” and
“hereunder” and other words of similar import refer to the Note Purchase Agreement as a whole and not to any particular Section, Subsection, Schedule, Exhibit, Annex or other subdivision. 

(iv) Reference to Government. All references in the Note Purchase Agreement to a “government” are to such
government and any instrumentality or agency thereof. 
 (v) Including Without Limitation. Unless the context
otherwise requires, whenever the words “including”, “include” or “includes” are used herein, they shall be deemed to be followed by the phrase “without limitation”. 

(vi) Notice and Notify. Whenever the words “notice” or “notify” or similar words are used herein,
they mean the provision of formal notice as set forth in Section 6 of the Note Purchase Agreement. 

(vii) Reference to Persons. All references in the Note Purchase Agreement to a Person shall include successors and
permitted assigns of such Person. 

  

					
		  	A-1	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 (b) Definitions. 

“Additional Series Equipment Notes” means Equipment Notes of each series issued under an Indenture and designated other than
as “Series AA”, “Series A” or “Series B” issued thereunder, if any, in the principal amount and maturities and bearing interest as specified in Schedule I to such Indenture amended at the time of original issuance of
such Additional Series Equipment Notes under the heading for such series. 
 “Additional Series Pass Through Certificates”
means the pass through certificates, if any, issued pursuant to any Additional Series Pass Through Trust Agreement. 
 “Additional
Series Pass Through Trust” means a grantor trust, if any, created to facilitate the issuance and sale of pass through certificates in connection with the issuance of any Additional Series Equipment Notes. 

“Additional Series Pass Through Trust Agreement” means a Trust Supplement entered into in connection with the creation of an
Additional Series Pass Through Trust, together with the Basic Pass Through Trust Agreement, as the same may be amended, supplemented or otherwise modified from time to time in accordance with its terms. 

“Additional Series Pass Through Trustee” means, with respect to any Additional Series Pass Through Trust, the trustee under
the Additional Series Pass Through Trust Agreement for such Additional Series Pass Through Trust, in its capacity as pass through trustee thereunder. 

“Aircraft” has the meaning set forth in the third recital to the Note Purchase Agreement. 

“Aircraft Purchase Agreement” means the A320 Family Purchase Agreement, dated May 5, 2004, between the Manufacturer and
the Company, as the same may be amended, supplemented or otherwise modified from time to time in accordance with its terms. 

“Amortization Withdrawal”, with respect to each Class of Certificates, has the meaning set forth in
Section 2.3(b) of the related Deposit Agreement. 
 “Bankruptcy Code” means the United States
Bankruptcy Code, 11 United States Code §§101 et seq., as amended from time to time, or any successor statutes thereto. 

  

					
		  	A-2	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 “Basic Pass Through Trust Agreement” means that certain Pass Through Trust
Agreement, dated as of August 11, 2015, between the Company and WTNA, as the same may be amended, supplemented or otherwise modified from time to time in accordance with its terms (but does not include any Trust Supplement). 

“Business Day” means any day other than a Saturday, a Sunday or a day on which commercial banks are required or authorized to
close in New York, New York, Miramar, Florida, Wilmington, Delaware or, if different from the foregoing, the city and state in which any Loan Trustee, any Pass Through Trustee or the Subordination Agent maintains its Corporate Trust Office or
receives and disburses funds. 
 “Certificated Air Carrier” means an air carrier holding 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 or that otherwise is certified or
registered to the extent required to fall within the purview of Section 1110. 
 “Certificates” has the meaning set
forth in the fourth recital to the Note Purchase Agreement. 
 “Citizen of the United States” has the meaning specified for
such term in Section 40102(a)(15) of Title 49 of the United States Code or any similar legislation of the United States enacted in substitution or replacement therefor. 

“Class” means the class of Certificates issued by a Pass Through Trust. 

“Class A Certificates” means the Certificates issued by the Class A Pass Through Trust. 

“Class A Liquidity Facility” has the meaning set forth in the Intercreditor Agreement. 

“Class A Liquidity Provider” has the meaning set forth in the Intercreditor Agreement. 

“Class A Pass Through Trust” has the meaning set forth in the fourth recital to the Note Purchase
Agreement. 

  

					
		  	A-3	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 “Class A Pass Through Trustee” has the meaning set forth in
the fifth recital to the Note Purchase Agreement. 
 “Class AA Certificates” means the Certificates
issued by the Class AA Pass Through Trust. 
 “Class AA Liquidity Facility” has the meaning set
forth in the Intercreditor Agreement. 
 “Class AA Liquidity Provider” has the meaning set forth in the
Intercreditor Agreement. 
 “Class AA Pass Through Trust” has the meaning set forth in the fourth
recital to the Note Purchase Agreement. 
 “Class AA Pass Through Trustee” has the meaning set forth in
the fifth recital to the Note Purchase Agreement. 
 “Class B Certificates” means the Certificates
issued by the Class B Pass Through Trust. 
 “Class B Liquidity Facility” has the meaning set forth
in the Intercreditor Agreement. 
 “Class B Liquidity Provider” has the meaning set forth in the
Intercreditor Agreement. 
 “Class B Pass Through Trust” has the meaning set forth in the fourth recital
to the Note Purchase Agreement. 
 “Class B Pass Through Trustee” has the meaning set forth in the fifth
recital to the Note Purchase Agreement. 
 “Company” has the meaning set forth in the first paragraph of the Note Purchase
Agreement. 

  

					
		  	A-4	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 “Corporate Trust Office” has the meaning set forth in
Section 1.01 of the Intercreditor Agreement. 
 “Cut-Off
Date” means the earlier of: 
 (a) the day after the Delivery Period Termination Date; and 

(b) the date on which a Triggering Event occurs. 

“Delivery Period Termination Date” means the earlier of: 

(a) January 31, 2019; and 

(b) the date on which Equipment Notes issued with respect to all of the Aircraft have been purchased by the Pass Through
Trustees in accordance with the Note Purchase Agreement. 
 “Deposit Agreements” has the meaning set forth in the sixth
recital to the Note Purchase Agreement, subject to Section 5(f) of the Note Purchase Agreement. 

“Depositary” means, subject to Section 5(f) of the Note Purchase Agreement, Citibank, N.A. 

“Depositary Threshold Rating” has the meaning set forth in Section 5(a) of the Note Purchase
Agreement. 
 “Deposits” has the meaning set forth in the sixth recital to the Note Purchase Agreement. 

“Early Delivery Aircraft” has the meaning set forth in the second recital to the Note Purchase Agreement. 

“Eligible Aircraft” has the meaning set forth in the second recital to the Note Purchase Agreement. 

  

					
		  	A-5	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 “Equipment Notes” means and includes any equipment notes issued under any
Indenture in the form specified in Section 2.01 thereof (as such form may be varied pursuant to the terms of the Note Purchase Agreement and of such Indenture) and any Equipment Note issued under any such Indenture in
exchange for or replacement of any other Equipment Note. 
 “Escrow Agent” has the meaning set forth in the first paragraph
of the Note Purchase Agreement. 
 “Escrow Agent Agreements” has the meaning set forth in
Section 3(e)(i) of the Note Purchase Agreement. 
 “Escrow and Paying Agent Agreements” has the
meaning set forth in the sixth recital to the Note Purchase Agreement. 
 “FAA” means the United States Federal Aviation
Administration and any agency or instrumentality of the United States government succeeding to its functions. 
 “Financing
Agreements” means, collectively, with respect to any Aircraft, the Participation Agreement, the Indenture and the Equipment Notes issued under such Indenture, in each case relating to such Aircraft. 

“Fitch” means Fitch Ratings, Inc. 

“Funding Date” has the meaning set forth in Section 1(b) of the Note Purchase Agreement. 

“Funding Notice” has the meaning set forth in Section 1(b) of the Note Purchase Agreement. 

“Government Entity” means (a) any federal, state, provincial or similar government, and any body, board,
department, commission, court, tribunal, authority, agency or other instrumentality of any such government or otherwise exercising any executive, legislative, judicial, administrative or regulatory functions of such government or (b) any
other government entity having jurisdiction over any matter contemplated by the Operative Agreements or relating to the observance or performance of the obligations of any of the parties to the Operative Agreements. 

  

					
		  	A-6	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 “holder”, with respect to any Certificate, means the Person in whose name such
Certificate is registered in the Register. 
 “Indenture” means with respect to an Aircraft, an indenture and security
agreement substantially in the form of the Indenture Form to which such Aircraft shall have been subjected, as such agreement may be amended, supplemented or otherwise modified from time to time. 

“Indenture Form” has the meaning set forth on Schedule III to the Note Purchase Agreement. 

“Initial Deposits” has the meaning set forth in the sixth recital to the Note Purchase Agreement. 

“Intercreditor Agreement” means that certain Intercreditor Agreement, dated as of the Issuance Date, among the Pass Through
Trustees, the Liquidity Providers and the Subordination Agent, as the same may be amended, supplemented or otherwise modified from time to time in accordance with its terms; provided that for purposes of any obligations of the Company, no
amendment, modification or supplement to, or substitution or replacement of, such Intercreditor Agreement shall be effective unless consented to by the Company. 

“Issuance Date” means the date of the original issuance of the Certificates. 

“Liquidity Facilities” means, collectively, the Class AA Liquidity Facility, the Class A Liquidity Facility and the
Class B Liquidity Facility. 
 “Liquidity Providers” means, collectively, the Class AA Liquidity Provider, the
Class A Liquidity Provider and the Class B Liquidity Provider. 
 “Loan Trustee” means, with respect to any
Aircraft, the “Loan Trustee” as defined in the Financing Agreements in respect of such Aircraft. 
 “Long-Term
Rating” means, for any entity, (a) in the case of Standard & Poor’s, the long-term issuer credit rating of such entity, and (b) in the case of Fitch, the long-term issuer default rating of such entity.

  

					
		  	A-7	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 “Manufacturer” means, as the context may require, Airbus S.A.S. (legal successor
of AVSA, S.A.R.L), a Société par Actions Simplifiée created and existing under French law, or Airbus Americas, Inc., a Delaware corporation, and, in each case, its successors and assigns. 

“Note Purchase Agreement” means the Note Purchase Agreement to which this Annex A is attached, as such agreement may
be amended, supplemented or otherwise modified from time to time. 
 “Notice of Purchase Withdrawal” with respect to each
Deposit Agreement, has the meaning set forth in Section 2.3(a) of such Deposit Agreement. 
 “Operative
Agreements” means, collectively, each Pass Through Trust Agreement, the Note Purchase Agreement, each Escrow and Paying Agent Agreement, each Deposit Agreement, each Liquidity Facility, the Intercreditor Agreement, the Certificates and,
with respect to each Aircraft in respect of which Equipment Notes shall have been issued, the Financing Agreements. 

“Participation Agreement” means with respect to an Aircraft, a participation agreement substantially in the form of the
Participation Agreement Form relating to the financing of such Aircraft, as such agreement may be amended, supplemented or otherwise modified from time to time. 

“Participation Agreement Form” has the meaning set forth on Schedule III to the Note Purchase Agreement. 

“Pass Through Trust” has the meaning set forth in the fourth recital to the Note Purchase Agreement. 

“Pass Through Trust Agreement” means each of the three separate Trust Supplements referred to in the fourth recital to the
Note Purchase Agreement, each dated as of the Issuance Date, by and between the Company and the Pass Through Trustee, together in each case with the Basic Pass Through Trust Agreement, as the same may be amended, supplemented or otherwise modified
from time to time in accordance with the terms thereof. 
 “Pass Through Trustee” has the meaning set forth in the first
paragraph of the Note Purchase Agreement. 

  

					
		  	A-8	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 “Paying Agent” has the meaning set forth in the first paragraph of the Note
Purchase Agreement. 
 “Paying Agent Agreements” has the meaning set forth in Section 3(f)(i) of
the Note Purchase Agreement. 
 “Person” means any individual, firm, partnership, joint venture, trust, trustee, Government
Entity, organization, association, corporation, limited liability company, government agency, committee, department, authority and other body, corporate or incorporate, whether having distinct legal status or not, or any member of any of the same.

 “Rating Agencies” means, with respect to any Class of Certificates, collectively, at any time, each nationally
recognized rating agency which shall have been requested by the Company to rate such Class of Certificates and which shall then be rating such Class of Certificates. The initial Rating Agencies with respect to the Class AA
Certificates, Class A Certificates and the Class B Certificates will be Standard & Poor’s and Fitch. 

“Rating Agency Confirmation” means, in the case of any action or event that, pursuant to the express terms of the Note
Purchase Agreement, requires a “Rating Agency Confirmation” with respect to any Class of Certificates in connection therewith, a written confirmation from each of the Rating Agencies then rating such Class of Certificates to the
effect that such action or event would not result in (i) a reduction of the rating for such Class of Certificates by such Rating Agency below the then current rating for such Class of Certificates issued by such Rating Agency
(before the downgrading of such rating, if any, as a result of the downgrading of the Depositary below the applicable Depositary Threshold Rating for such Rating Agency, if applicable) or (ii) a withdrawal or suspension of the rating of
such Class of Certificates by such Rating Agency. 
 “Register” means the register maintained pursuant to Sections
3.04 and 7.12 of the Basic Pass Through Trust Agreement with respect to each Pass Through Trust. 
 “Replacement Deposit
Agreement” means, for each Class of Certificates, a deposit agreement substantially in the form of the replaced Deposit Agreement for such Class of Certificates as shall permit the Rating Agencies to issue a Rating Agency
Confirmation with respect to such Class of Certificates then rated by such Rating Agency in connection with the replacement of the Depositary with the Replacement Depositary party to such deposit agreement. 

“Replacement Depositary” has the meaning set forth in Section 5(a) of the Note Purchase Agreement.

  

					
		  	A-9	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 “Required Terms” means the provisions set forth on Schedule III to the
Note Purchase Agreement. 
 “Section 1110” means Section 1110 of the Bankruptcy Code or any
successor or analogous Section of the federal bankruptcy law in effect from time to time. 
 “Series A Equipment Notes”
means Equipment Notes issued under an Indenture and designated as “Series A” thereunder. 
 “Series AA Equipment
Notes” means Equipment Notes issued under an Indenture and designated as “Series AA” thereunder. 
 “Series B
Equipment Notes” means Equipment Notes issued under an Indenture and designated as “Series B” thereunder. 

“Short-Term Rating” means, for any entity, (a) in the case of Standard & Poor’s, the short-term
issuer credit rating of such entity, and (b) in the case of Fitch, the short-term issuer default rating of such entity. 

“Standard & Poor’s” means Standard & Poor’s Ratings Services, a Standard &
Poor’s Financial Services LLC business. 
 “Subordination Agent” has the meaning set forth in the first paragraph of
the Note Purchase Agreement. 
 “Substitute Aircraft” has the meaning set forth in Section 1(h)
of the Note Purchase Agreement. 
 “Taxes” means all license, recording, documentary, registration and other similar fees
and all taxes, levies, imposts, duties, charges, assessments or withholdings of any nature whatsoever imposed by any Taxing Authority, together with any penalties, additions to tax, fines or interest thereon or additions thereto. 

“Taxing Authority” means any federal, state or local government or other taxing authority in the United States, any foreign
government or any political subdivision or taxing 

  

					
		  	A-10	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 
authority thereof, any international taxing authority or any territory or possession of the United States or any taxing authority thereof. 

“Triggering Event” has the meaning assigned to such term in the Intercreditor Agreement. 

“Trust Supplement” means an agreement supplemental to the Basic Pass Through Trust Agreement pursuant to which
(a) a separate trust is created for the benefit of the holders of the pass through certificates of a class, (b) the issuance of the pass through certificates of such class representing fractional undivided interests in such
trust is authorized and (c) the terms of the pass through certificates of such class are established. 

“Underwriters” has the meaning set forth in the fifth recital to the Note Purchase Agreement. 

“Underwriting Agreement” has the meaning set forth in the fifth recital to the Note Purchase Agreement. 

“United States” means the United States of America. 

“WTNA” has the meaning set forth in the first paragraph of the Note Purchase Agreement. 

  

					
		  	A-11	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 EXHIBIT A to 

NOTE PURCHASE AGREEMENT 
 FORM
OF FUNDING NOTICE 
 FUNDING NOTICE 

Dated as of [                    ] 

To each of the addressees listed 

in Schedule A hereto 

Re: Funding Notice in accordance with Note Purchase Agreement referred to below 

Ladies and Gentlemen: 
 Reference is made to the
Note Purchase Agreement, dated as of November 28, 2017, among Spirit Airlines, Inc. (the “Company”), Wilmington Trust, National Association, as Pass Through Trustee under each of the Pass Through Trust Agreements (as defined
therein) (the “Pass Through Trustee”), Wilmington Trust, National Association, as Subordination Agent (the “Subordination Agent”), Wilmington Trust Company, as Escrow Agent (the “Escrow Agent”), and
Wilmington Trust, National Association, as Paying Agent (the “Paying Agent”) (as in effect from time to time, the “Note Purchase Agreement”). Unless otherwise defined herein, capitalized terms used herein shall have
the meanings set forth in the Note Purchase Agreement or, to the extent not defined therein, the Intercreditor Agreement. 
 Pursuant to
Section 1(b) of the Note Purchase Agreement, the undersigned hereby notifies you, in respect of the aircraft described in Schedule B hereto (the “Aircraft”), of the following: 

 

	(1)	The Funding Date of the Aircraft shall be [                    ] (which date is no more than 90 days after the delivery
of the Aircraft to the Company by the Manufacturer under the Aircraft Purchase Agreement)3; 

  

	(2)	The Equipment Notes to be issued in respect of the Aircraft are described in Schedule C hereto, and the aggregate amount of each series of Equipment Notes to be issued, and 

 
  

	3 	To be included in Funding Notices with respect to each Aircraft that is not a Substitute Aircraft. 

  

					
		  		  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

	 	
purchased by the respective Pass Through Trustees referred to below, on the Funding Date, in connection with the financing of such Aircraft is as follows: 

(a) the Class AA Pass Through Trustee shall purchase Series AA Equipment Notes in the amount of
$[                    ]; 
 (b) the
Class A Pass Through Trustee shall purchase Series A Equipment Notes in the amount of $[                    ]; and 

(c) the Class B Pass Through Trustee shall purchase Series B Equipment Notes in the amount of
$[                    ]. 
 The Company
hereby instructs the Class AA Pass Through Trustee to (i) execute a Withdrawal Certificate in the form of Annex A hereto dated as of
[                    ] and attach thereto a Notice of Purchase Withdrawal dated such date completed as set forth on Exhibit A hereto and
(ii) deliver such Withdrawal Certificate and Notice of Purchase Withdrawal to the applicable Escrow Agent. 
 The Company hereby
instructs the Class A Pass Through Trustee to (i) execute a Withdrawal Certificate in the form of Annex A hereto dated as of
[                    ] and attach thereto a Notice of Purchase Withdrawal dated such date completed as set forth on Exhibit A hereto and
(ii) deliver such Withdrawal Certificate and Notice of Purchase Withdrawal to the applicable Escrow Agent. 
 The Company hereby
instructs the Class B Pass Through Trustee to (i) execute a Withdrawal Certificate in the form of Annex A hereto dated as of
[                    ] and attach thereto a Notice of Purchase Withdrawal dated such date completed as set forth on Exhibit B hereto and
(ii) deliver such Withdrawal Certificate and Notice of Purchase Withdrawal to the applicable Escrow Agent. 
 The Company hereby
instructs each Pass Through Trustee to (i) purchase Equipment Notes of the related series and in an amount set forth opposite such Pass Through Trustee in clause (2) above with a portion of the proceeds of the withdrawals of
Deposits referred to in the applicable Notice of Purchase Withdrawal referred to above and (ii) re-deposit with the Depositary the excess, if any, of the amount so withdrawn over the
purchase price of such Equipment Notes. 
 The Company hereby instructs each Pass Through Trustee to (a) enter into the
Participation Agreement (N[            ]) dated as of [                    ] among the
Company and Wilmington Trust, National Association, as Loan Trustee, Subordination Agent and each Pass Through Trustee, substantially in the form previously provided, (b) perform its obligations thereunder and (c) deliver
such certificates, documents and legal opinions relating to such Pass Through Trustee as are required thereby. 

  

					
		  	-2-	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 Yours faithfully, 
  

			
	Spirit Airlines, Inc.
		
	By:	 	  

		 	Name:
		 	Title:

  

					
		  	-3-	  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 Schedule A to 

Funding Notice 
 Wilmington Trust, National
Association, as 
 Pass Through Trustee 
 1100
North Market Street 
 Wilmington, Delaware 19890-1605 

Reference: Spirit Airlines 2017-1 EETC 

Attention: Corporate Trust Administration – Jacqueline Solone 

Telephone: (302) 636-6387 

Facsimile: (302) 636-4140 

Wilmington Trust, National Association, as 

Subordination Agent and Paying Agent 
 1100 North
Market Street 
 Wilmington, Delaware 19890-1605 
 Reference:
Spirit Airlines 2017-1 EETC 
 Attention: Corporate Trust Administration – Jacqueline Solone 

Telephone: (302) 636-6387 

Facsimile: (302) 636-4140 

Wilmington Trust Company, as 
 Escrow Agent 

1100 North Market Street 
 Wilmington, Delaware 19890-1605 

Reference: Spirit Airlines 2017-1 EETC 

Attention: Corporate Trust Administration – Jacqueline Solone 

Telephone: (302) 636-6387 

Facsimile: (302) 636-4140 

Citibank, N.A., as Depositary 
 480 Washington Blvd., 18th Floor

 Jersey City, NJ 07310 
 Attention: Marion O’Connor 

Reference: Spirit Airlines 2017-1 EETC 

Telephone: (201) 763-3055 

Facsimile: (201) 254-3965 

E-mail: marion.oconnor@citi.com; cts.spag@citi.com 

Standard & Poor’s Ratings Services 
 55 Water
Street, 35th Floor 
 New York, New York 10004 
 Attention:
Betsy Snyder 
 Reference: Spirit Airlines 2017-1 EETC 

Telephone: (212) 438-7811 

Facsimile: (212) 438-7820 

  

					
		  		  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 Email: betsy_snyder@standardandpoors.com 

Fitch Ratings, Inc. 
 One State Street Plaza 

New York, New York 10004 
 Attention: Craig Fraser 

Reference: Spirit Airlines 2017-1 EETC 

Telephone: 212-908-0310 

Facsimile: 212-558-2552 

Email: craig.fraser@fitchratings.com 

  

					
		  		  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 Schedule B to 

Funding Notice 
 Aircraft

 One Airbus [Model] aircraft bearing U.S. Registration
Mark                 and manufacturer’s serial number                  together with
two [Engine Manufacturer and Model] engines bearing manufacturer’s serial numbers                  and
                . 

  

					
		  		  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 Schedule C to 

Funding Notice 
 Equipment
Notes 
  

											
	 Relevant Pass

Through Trustee
	  	Series of Equipment
Notes	 	Equipment Note No.	 	  	Original Principal
Amount4	 
	 Class AA Pass Through Trustee
	  	Series 2017-1AA-
[Reg. No.]	 	 	No.        	 	  	$	                    	 
	 Class A Pass Through Trustee
	  	Series 2017-1A-
[Reg. No.]	 	 	No.        	 	  	$	                    	 
	 Class B Pass Through Trustee
	  	Series 2017-1B-[Reg.
No.]	 	 	No.        	 	  	$	                    	 

  
  

	4 	With respect to any Early Delivery Aircraft, amount to be adjusted as set forth in Schedule III to the Note Purchase Agreement. 

  

					
		  		  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 Annex A to 

Funding Notice 
 WITHDRAWAL
CERTIFICATE 
 (Class [AA][A][B]) 
 Wilmington
Trust Company, 
 as Escrow Agent 
 1100 North Market Street

 Wilmington, Delaware 19890-1605 
 Reference: Spirit Airlines 2017-1[AA][A][B] EETC 
 Attention: Corporate Trust Administration – Jacqueline Solone 

Telephone: (302) 636-6387 

Facsimile: (302) 636-4140 

Ladies and Gentlemen: 
 Reference is made to the
Escrow and Paying Agent Agreement (Class [AA][A][B]), dated as of November 28, 2017 (the “Agreement”). We hereby certify to you that the conditions to the obligations of the undersigned to execute a Participation Agreement
pursuant to the Note Purchase Agreement have been satisfied. Pursuant to Section 1.02(c) of the Agreement, please execute the attached Notice of Purchase Withdrawal and immediately transmit by facsimile to the Depositary,
at Citibank, N.A., Attention: Marion O’Connor, 480 Washington Blvd., 18th Floor, Jersey City, NJ 07310 (Telephone: (201) 763-3055; Fax: (201) 254-3965; Email:
marion.oconnor@citi.com; cts.spag@citi.com). 
 Capitalized terms used herein but not defined herein shall have the meanings set forth in the Agreement.

  

			
	Very truly yours,
	
	WILMINGTON TRUST, NATIONAL ASSOCIATION,
	not in its individual capacity but solely as Pass
	Through Trustee
		
	By:	 	  

		 	Name:
		 	Title:

 Dated: As of
[                         , 20    ] 

  

					
		  		  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 Exhibit A to 

Funding Notice 
 NOTICE OF
PURCHASE WITHDRAWAL 
 Citibank, N.A., as Depositary 
 480
Washington Blvd., 18th Floor 
 Jersey City, NJ 07310 

Attention: Marion O’Connor 
 Reference: Spirit Airlines 2017-1 EETC 
 Telephone: (201) 763-3055 

Facsimile: (201) 254-3965 

E-mail: marion.oconnor@citi.com; cts.spag@citi.com 

Ladies and Gentlemen: 
 Reference is made to the
Deposit Agreement (Class AA) dated as of November 28, 2017 (the “Deposit Agreement”) between Wilmington Trust Company, as Escrow Agent, and Citibank, N.A., as Depositary (the “Depositary”). 

In accordance with Section 2.3(a) of the Deposit Agreement, the undersigned hereby requests the withdrawal of the
entire amount of the Deposit, $[                ], from Account No. [        ]. 

The undersigned hereby directs the Depositary to pay the entire amount of the Deposit to [Spirit Airlines, Inc. (“Spirit”)
at Wells Fargo Bank, N.A., ABA# [                ], Account No. [                ],
Reference: Spirit Airlines 2017-1AA EETC (or to a designee of Spirit as notified by Spirit prior to the date of withdrawal specified herein)][the Pass Through Trustee (as defined in the Deposit Agreement) at
Wilmington Trust, National Association, Wilmington, Delaware, ABA# [                ], Corporate Trust, Account No.
[            ], Reference: Spirit Airlines 2017-1AA EETC, Attn: Jacqueline Solone5 on
[            ], 20        , upon the telephonic request of a representative of the Pass Through Trustee. 

 
  

	5 	If any excess amounts that would need to be re-deposited pursuant to Section 2.4 of the Deposit Agreement and the applicable Funding Notice have been identified as of the
date of this notice, the account to be specified here should be that of the Pass Through Trustee so that the Pass Through Trustee can re-deposit such excess amounts with the Depositary in accordance with
Section 2.4 of the Deposit Agreement. If any such excess amounts are identified following delivery of this notice, a separate substantially similar notice may be sent specifying such account of the Pass Through Trustee. If there are no such
excess amounts, the account number to be specified here should be that of Spirit. 

  

					
		  		  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 Exhibit B to 

Funding Notice 
 NOTICE OF
PURCHASE WITHDRAWAL 
 Citibank, N.A., as Depositary 
 480
Washington Blvd., 18th Floor 
 Jersey City, NJ 07310 

Attention: Marion O’Connor 
 Reference: Spirit Airlines 2017-1 EETC 
 Telephone: (201) 763-3055 

Facsimile: (201) 254-3965 

E-mail: marion.oconnor@citi.com; cts.spag@citi.com 

Ladies and Gentlemen: 
 Reference is made to the
Deposit Agreement (Class A) dated as of November 28, 2017 (the “Deposit Agreement”) between Wilmington Trust Company, as Escrow Agent, and Citibank, N.A., as Depositary (the “Depositary”). 

In accordance with Section 2.3(a) of the Deposit Agreement, the undersigned hereby requests the withdrawal of the
entire amount of the Deposit, $[            ], from Account No. [        ]. 

The undersigned hereby directs the Depositary to pay the entire amount of the Deposit to [Spirit Airlines, Inc. (“Spirit”)
at Wells Fargo Bank, N.A., ABA# 121000248, Account No. 2000049216277, Reference: Spirit Airlines 2017-1A EETC (or to a designee of Spirit as notified by Spirit prior to the date of withdrawal specified
herein)][the Pass Through Trustee (as defined in the Deposit Agreement) at Wilmington Trust, National Association, Wilmington, Delaware, ABA# 031100092, Corporate Trust, Account No. 124914-000, Reference:
Spirit Airlines 2017-1A EETC, Attn: Jacqueline Solone6 on [            ],
20    , upon the telephonic request of a representative of the Pass Through Trustee. 
  

 

	6 	If any excess amounts that would need to be re-deposited pursuant to Section 2.4 of the Deposit Agreement and the applicable Funding Notice have been identified as of the
date of this notice, the account to be specified here should be that of the Pass Through Trustee so that the Pass Through Trustee can re-deposit such excess amounts with the Depositary in accordance with
Section 2.4 of the Deposit Agreement. If any such excess amounts are identified following delivery of this notice, a separate substantially similar notice may be sent specifying such account of the Pass Through Trustee. If there are no such
excess amounts, the account number to be specified here should be that of Spirit. 

  

					
		  		  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 
			
	WILMINGTON TRUST COMPANY, as Escrow Agent
		
	By	 	  

		 	Name:
		 	Title:

 Dated: As of
[                         , 20    ] 

  

					
		  		  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 Exhibit C to 

Funding Notice 
 NOTICE OF
PURCHASE WITHDRAWAL 
 Citibank, N.A., as Depositary 
 480
Washington Blvd., 18th Floor 
 Jersey City, NJ 07310 

Attention: Marion O’Connor 
 Reference: Spirit Airlines 2017-1 EETC 
 Telephone: (201) 763-3055 

Facsimile: (201) 254-3965 

E-mail: marion.oconnor@citi.com; cts.spag@citi.com 

Ladies and Gentlemen: 
 Reference is made to the
Deposit Agreement (Class B) dated as of November 28, 2017 (the “Deposit Agreement”) between Wilmington Trust Company, as Escrow Agent, and Citibank, N.A., as Depositary (the “Depositary”). 

In accordance with Section 2.3(a) of the Deposit Agreement, the undersigned hereby requests the withdrawal of the
entire amount of the Deposit, $[                ], from Account No. [        ]. 

The undersigned hereby directs the Depositary to pay the entire amount of the Deposit to [Spirit Airlines, Inc. (“Spirit”)
at Wells Fargo Bank, N.A., ABA# 121000248, Account No. 2000049216277, Reference: Spirit Airlines 2017-1B EETC (or to a designee of Spirit as notified by Spirit prior to the date of withdrawal specified
herein] [the Pass Through Trustee (as defined in the Deposit Agreement) at Wilmington Trust, National Association, Wilmington, Delaware, ABA# 031100092, Corporate Trust, Account No. 124916-000, Reference:
Spirit Airlines 2017-1B EETC, Attn: Jacqueline Solone7 on [            ],
20    , upon the telephonic request of a representative of the Pass Through Trustee. 
  

 

	7 	If any excess amounts that would need to be re-deposited pursuant to Section 2.4 of the Deposit Agreement and the applicable Funding Notice have been identified as of the
date of this notice, the account to be specified here should be that of the Pass Through Trustee so that the Pass Through Trustee can re-deposit such excess amounts with the Depositary in accordance with
Section 2.4 of the Deposit Agreement. If any such excess amounts are identified following delivery of this notice, a separate substantially similar notice may be sent specifying such account of the Pass Through Trustee. If there are no such
excess amounts, the account number to be specified here should be that of Spirit. 

  

					
		  		  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 
			
	WILMINGTON TRUST COMPANY,
	as Escrow Agent
		
	By	 	  

		 	Name:
		 	Title:

 Dated: As of
[                     , 20    ] 

  

					
		  		  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 EXHIBIT B to 

NOTE PURCHASE AGREEMENT 
 FORM
OF PARTICIPATION AGREEMENT 
 [Filed separately as Exhibit 4.16] 

  

					
		  		  	 Note Purchase Agreement

(Spirit 2017-1 EETC)

 EXHIBIT C to 

NOTE PURCHASE AGREEMENT 
 FORM
OF INDENTURE 
 [Filed separately as Exhibit 4.17] 

  

					
		  		  	 Note Purchase Agreement

(Spirit 2017-1 EETC)EX-4.16

 Exhibit 4.16 

FINAL FORM 
  

 
 PARTICIPATION AGREEMENT 

([Reg. No.]) 
 Dated as of
            , 20        1 

among 
 SPIRIT AIRLINES, INC.,

 WILMINGTON TRUST, NATIONAL ASSOCIATION, 

as Pass Through Trustee under each of the 

Pass Through Trust Agreements, 

WILMINGTON TRUST, NATIONAL ASSOCIATION, 

as Subordination Agent, 

WILMINGTON TRUST, NATIONAL ASSOCIATION, 

as Loan Trustee, 
 and 

WILMINGTON TRUST, NATIONAL ASSOCIATION, 

in its individual capacity as set forth herein 

* 
 One Airbus [Model] 

(Generic Manufacturer and Model Airbus [Generic Model]) Aircraft 

U.S. Registration No. [Reg. No.] 
  

 
  

 

	1 	To insert the relevant Closing Date. 

  

					
		 		 	
Participation Agreement (Spirit 2017-1 EETC)

[Reg. No.]

 TABLE OF CONTENTS 

 

							
	 	  	 	  	Page	 
		
	 ARTICLE 1 DEFINITIONS 
	  	 	2	 
			
	 Section 1.01.
	  	Definitions	  	 	2	 
	 Section 1.02.
	  	Other Definitional Provisions	  	 	2	 
		
	 ARTICLE 2 THE LOANS 
	  	 	2	 
			
	 Section 2.01.
	  	The Loans	  	 	2	 
	 Section 2.02.
	  	Issuance of Equipment Notes	  	 	3	 
	 Section 2.03.
	  	The Closing	  	 	4	 
		
	 ARTICLE 3 CONDITIONS PRECEDENT 
	  	 	4	 
			
	 Section 3.01.
	  	Conditions Precedent to Obligations of the Pass Through Trustees	  	 	4	 
	 Section 3.02.
	  	Conditions Precedent to Obligations of the Company	  	 	8	 
		
	 ARTICLE 4 REPRESENTATIONS, WARRANTIES AND INDEMNITIES OF THE
COMPANY
	  	 	10	 
			
	 Section 4.01.
	  	Representations and Warranties of the Company	  	 	10	 
	 Section 4.02.
	  	General Indemnity	  	 	13	 
		
	 ARTICLE 5 REPRESENTATIONS, WARRANTIES AND COVENANTS OF WTNA
	  	 	20	 
			
	 Section 5.01.
	  	Representations, Warranties and Covenants of WTNA	  	 	20	 
		
	 ARTICLE 6 OTHER COVENANTS AND AGREEMENTS
	  	 	23	 
			
	 Section 6.01.
	  	Other Agreements	  	 	23	 
	 Section 6.02.
	  	Certain Covenants of the Company	  	 	26	 
		
	 ARTICLE 7 MISCELLANEOUS
	  	 	28	 
			
	 Section 7.01.
	  	Notices	  	 	28	 
	 Section 7.02.
	  	Survival of Representations, Warranties, Indemnities, Covenants and Agreements	  	 	29	 
	 Section 7.03.
	  	Governing Law	  	 	29	 
	 Section 7.04.
	  	Severability	  	 	29	 
	 Section 7.05.
	  	No Oral Modifications or Continuing Waivers; Consents	  	 	30	 
	 Section 7.06.
	  	Effect of Headings and Table of Contents	  	 	30	 
	 Section 7.07.
	  	Successors and Assigns	  	 	30	 

  

					
		 	i	 	
Participation Agreement (Spirit 2017-1 EETC)

[Reg. No.]

 TABLE OF CONTENTS 

(continued) 
  

							
	 	  	 	  	Page	 
	 Section 7.08.
	  	Benefits of Agreement	  	 	30	 
	 Section 7.09.
	  	Counterparts	  	 	30	 
	 Section 7.10.
	  	Submission to Jurisdiction	  	 	31	 
	 Section 7.11.
	  	Further Assurances	  	 	31	 
	 Section 7.12.
	  	Section 1110	  	 	31	 

  

					
	Schedule I	  	-	  	Equipment Notes, Purchasers and Original Principal Amounts
	Schedule II	  	-	  	Trust Supplements
			
	Exhibit A-1	  	-	  	Form of Opinion of Counsel for the Company
	Exhibit A-2	  	-	  	Form of Opinion of Debevoise & Plimpton LLP, special counsel for the Company
	Exhibit B	  	-	  	Form of Opinion of Special Counsel for the Loan Trustee, the Pass Through Trustees, the Subordination Agent and WTNA
	Exhibit C	  	-	  	Form of Opinion of Special FAA Counsel
	Exhibit D	  	-	  	Form of Airframe Warranties Agreement
	Exhibit E	  	-	  	Form of Opinion of Special Delaware Counsel as to UCC Matters
			
	Annex A	  	-	  	Definitions

  

					
		 	ii	 	
Participation Agreement (Spirit 2017-1 EETC)

[Reg. No.]

 PARTICIPATION AGREEMENT 

([REG. NO.]) 
 This
PARTICIPATION AGREEMENT ([REG. NO.]), dated as of             , 20        2, is made by and
among SPIRIT AIRLINES, INC., a Delaware corporation (together with its successors and permitted assigns, the “Company”), WILMINGTON TRUST, NATIONAL ASSOCIATION, a national banking association (in its individual capacity, together
with its successors and permitted assigns, “WTNA”), not in its individual capacity except as otherwise expressly provided in any of the Operative Documents or the Pass Through Documents, but solely as Pass Through Trustee under each
of the Pass Through Trust Agreements (such terms and other capitalized terms used herein without definition being defined as provided in Section 1.01), WILMINGTON TRUST, NATIONAL ASSOCIATION, a national banking association, as subordination
agent and trustee (in such capacity, together with any successor trustee in such capacity, the “Subordination Agent”) under the Intercreditor Agreement, and WILMINGTON TRUST, NATIONAL ASSOCIATION, as loan trustee (in such capacity,
together with any successor trustee in such capacity, the “Loan Trustee”) under the Indenture. 
 WITNESSETH: 

WHEREAS, the Company is the owner of that certain Airbus Model            
aircraft more particularly described in the Indenture Supplement originally executed and delivered under the Indenture; 
 WHEREAS,
concurrently with the execution and delivery of this Agreement, the Company and the Loan Trustee are entering into the Indenture, pursuant to which, among other things, the Company will issue three separate series of Equipment Notes, which Equipment
Notes are to be secured by a security interest in all right, title and interest of the Company in and to the Aircraft and certain other property described in the Indenture; 

WHEREAS, pursuant to the Basic Pass Through Trust Agreement and each of the Trust Supplements set forth in Schedule II, the Pass Through
Trusts were created and the Pass Through Certificates issued and sold; 
 WHEREAS, pursuant to the Intercreditor Agreement, the
Subordination Agent will hold the Equipment Notes on behalf of the Pass Through Trusts; 
 NOW, THEREFORE, in consideration of the foregoing
premises and 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: 

 
  

	2 	To insert the relevant Closing Date. 

  

					
		 		 	
Participation Agreement (Spirit 2017-1 EETC)

[Reg. No.]

 ARTICLE 1 

DEFINITIONS 

Section 1.01. Definitions. For the purposes of this Agreement, unless the context otherwise requires, capitalized terms used but
not defined herein shall have the respective meanings set forth or incorporated by reference in Annex A. 
 Section 1.02. Other
Definitional Provisions. (a) The definitions stated herein and in Annex A apply equally to both the singular and the plural forms of the terms defined. 

(b) All references in this Agreement to designated “Articles”, “Sections”, “Subsections”,
“Schedules”, “Exhibits”, “Annexes” and other subdivisions are to the designated Article, Section, Subsection, Schedule, Exhibit, Annex or other subdivision of this Agreement, unless otherwise specifically stated. 

(c) The words “herein”, “hereof” and “hereunder” and other words of similar import refer to this
Agreement as a whole and not to any particular Article, Section, Subsection, Schedule, Exhibit, Annex or other subdivision. 

(d) All references in this Agreement to a “government” are to such government and any instrumentality or agency
thereof. 
 (e) Unless the context otherwise requires, whenever the words “including”, “include” or
“includes” are used herein, they shall be deemed to be followed by the phrase “without limitation”. 

(f) All references in this Agreement to a Person shall include successors and permitted assigns of such Person. 

ARTICLE 2 
 THE LOANS

 Section 2.01. The Loans. Subject to the terms and conditions of this Agreement and the Indenture, on the Closing Date,
the Pass Through Trustee for each Pass Through Trust shall make a loan to the Company by paying to the Company the aggregate original principal amounts of the Equipment Notes being issued to such Pass Through Trust as set forth on Schedule I
opposite the name of such Pass Through Trust. The Pass Through Trustees, on behalf of the Pass Through Trusts, shall make such loans to the Company no later than 11:00 a.m. (New York City time) on the Closing Date by transferring such amount in
immediately available funds to the Company at its account at Wells Fargo 

  

					
		 	2	 	
Participation Agreement (Spirit 2017-1 EETC)

[Reg. No.]

 
Bank, N.A., 420 Montgomery, San Francisco, CA 94104, Account No. [                    ], ABA
Number [                    ] (or to a designee of the Company as notified by the Company prior to the Closing Date). 

Section 2.02. Issuance of Equipment Notes. Upon the occurrence of the above payments by the Pass Through Trustee for each Pass
Through Trust to the Company, the Company shall issue, pursuant to and in accordance with Article II of the Indenture, to the Subordination Agent as agent and trustee for the Pass Through Trustee for each Pass Through Trust, one or more
Equipment Notes of the maturity and aggregate original principal amount and bearing the interest rate set forth in Schedule I opposite the name of such Pass Through Trust. Each such Equipment Note shall be duly authenticated by the Loan Trustee
pursuant to the Indenture, registered in the name of the Subordination Agent and dated the Closing Date and shall be delivered by the Loan Trustee to the Subordination Agent. In addition, subject to Section 4(a)(v) of the Note Purchase
Agreement and Section 8.01(c) or 8.01(d) of the Intercreditor Agreement, as applicable, the Company shall have the option after the Closing Date, at any time and from time to time, (i) to redeem all but not less than all of the
Series A Equipment Notes or all but not less than all of the Series B Equipment Notes (or all but not less than all of any Series of Additional Series Equipment Notes) and to issue under the Indenture new Equipment Notes with the same Series
designation as, but with terms that may be the same as or different from those of, the redeemed Equipment Notes, (ii) to issue one or more Series of Additional Series Equipment Notes under the Indenture (including, for the avoidance of
doubt, multiple issuances at the same or different times resulting in more than one Series of Additional Series Equipment Notes being outstanding at any time) and (iii) following the payment in full of all but not less than all of the
Series A Equipment Notes or all but not less than all of the Series B Equipment Notes (or all but not less than all of any Series of Additional Series Equipment Notes), to issue under the Indenture new Equipment Notes with the same Series
designation as, but with terms that may be the same as or different from those of, such Equipment Notes that have been paid in full. If new Series A Equipment Notes or new Series B Equipment Notes or Additional Series Equipment Notes or new
Additional Series Equipment Notes are so issued after the Closing Date, each Noteholder of such Equipment Notes shall be deemed to be a party hereto without further act, and shall be entitled to execute, and at the request of the Company shall
execute, a counterpart to this Agreement. Subject to Section 4(a)(v) of the Note Purchase Agreement and Section 8.01(c) or 8.01(d) of the Intercreditor Agreement, as applicable, each of the parties hereto agrees, at the Company’s
request, to enter into any amendments to (or any amendment and restatement of) this Agreement, any of the other Operative Documents and the Pass Through Documents as may be necessary or desirable (A) to give effect to (x) any redemption
and issuance, any issuance or any payment and issuance of any such new Series A Equipment Notes or new Series B Equipment Notes or Additional Series Equipment Notes or new Additional Series Equipment Notes, as applicable, and the issuance of pass
through certificates by any pass through trust that acquires any such new Series A Equipment Notes or new Series B 

  

					
		 	3	 	
Participation Agreement (Spirit 2017-1 EETC)

[Reg. No.]

 
Equipment Notes or Additional Series Equipment Notes or new Additional Series Equipment Notes, as applicable, or (y) any redemption and issuance, any issuance or any payment and
issuance of any new “Series A Equipment Notes” or new “Series B Equipment Notes” or “Additional Series Equipment Notes” of any series or new “Additional Series Equipment Notes”, in each case under any Related
Indenture, and the issuance of pass through certificates by any pass through trust that acquires any such new “Series A Equipment Notes” or new “Series B Equipment Notes” or “Additional Series Equipment Notes” or new
“Additional Series Equipment Notes”, as applicable, and (B) to make changes relating to any of the foregoing (including, without limitation, to provide for any prefunding mechanism in connection therewith) and to provide for
any credit support for any pass through certificates relating to any such new Series A Equipment Notes, new Series B Equipment Notes or Additional Series Equipment Notes or new Additional Series Equipment Notes or new “Series A Equipment
Notes” or new “Series B Equipment Notes” or “Additional Series Equipment Notes” of any series or new “Additional Series Equipment Notes” (including, without limitation, to provide for payment of fees, interest,
expenses, reimbursement of advances and other obligations arising from such credit support (including, without limitation, to specify such credit support as a “Liquidity Facility” and the provider of any such credit support as a
“Liquidity Provider” and, if such Liquidity Facility is to be comprised of more than one instrument, to incorporate appropriate mechanics for multiple Liquidity Facilities for a single Pass Through Trust)). For the avoidance of doubt, if
the Company shall issue new “Series A Equipment Notes” or new “Series B Equipment Notes” or “Additional Series Equipment Notes” of any Series or new “Additional Series Equipment Notes”, in each case under any
Related Indenture, the Company may, but shall not be required to, issue, as the case may be, new Series A Equipment Notes or new Series B Equipment Notes or Additional Series Equipment Notes of the same Series or new Additional Series Equipment
Notes of the same Series, in each case under the Indenture. 
 Section 2.03. The Closing. The closing (the
“Closing”) of the transactions contemplated hereby shall take place at the offices of Debevoise & Plimpton LLP, 919 Third Avenue, New York, New York 10022 at 9:30 a.m. (New York City time) on
                    , 20        , or at such other time or place as the parties shall agree. 

ARTICLE 3 
 CONDITIONS
PRECEDENT 
 Section 3.01. Conditions Precedent to Obligations of the Pass Through Trustees. The obligation of each Pass
Through Trustee to make the loan contemplated by Article II is subject to the fulfillment (or the waiver by such Pass Through Trustee) prior to or on the Closing Date of the following conditions precedent: 

(a) Authentication. The Company shall have tendered the Equipment Notes being issued on the Closing Date to the Loan
Trustee for authentication, 

  

					
		 	4	 	
Participation Agreement (Spirit 2017-1 EETC)

[Reg. No.]

 
and the Loan Trustee shall have authenticated such Equipment Notes and shall have tendered such Equipment Notes to the Subordination Agent on behalf of the applicable Pass Through Trustee,
against receipt of the loan proceeds, in accordance with Section 2.02. 
 (b) No Changes in Law. No change shall
have occurred after the date of this Agreement in applicable law or regulations thereunder or interpretations thereof by appropriate regulatory authorities or any court that would make it a violation of law or governmental regulations for the Pass
Through Trustees to make the loans contemplated by Section 2.01 or to acquire the Equipment Notes. 
 (c)
Documentation. This Agreement and the following documents shall have been duly authorized, executed and delivered by the respective party or parties thereto (other than the Pass Through Trustees or the Loan Trustee), shall be in full force
and effect and executed counterparts (or copies thereof where indicated) thereof shall have been delivered to each Pass Through Trustee: 
  

	 	(i)	the Intercreditor Agreement; 

  

	 	(ii)	the Liquidity Facilities; 

  

	 	(iii)	the Pass Through Trust Agreements; 

  

	 	(iv)	the Indenture and the Indenture Supplement covering the Aircraft and dated the Closing Date; 

  

	 	(v)	the Airframe Warranties Agreement; 

  

	 	(vi)	a copy of the FAA Bill of Sale; and 

  

	 	(vii)	a copy of the Warranty Bill of Sale. 

 (d) Financing Statement. A Uniform
Commercial Code financing statement or statements covering the security interest created by the Indenture naming the Company, as debtor, and the Loan Trustee, as secured party, shall have been (or shall be in the process of being) duly filed in all
places necessary or desirable within the State of Delaware. 
 (e) Certain Closing Certificates. Each Pass Through
Trustee shall have received the following: 
 (i) a certificate dated the Closing Date of the Secretary or an Assistant
Secretary of the Company, certifying as to (A) a copy of the resolutions of the Board of Directors of the Company or the executive or any other applicable committee thereof duly authorizing the transactions

  

					
		 	5	 	
Participation Agreement (Spirit 2017-1 EETC)

[Reg. No.]

 
contemplated hereby and the execution, delivery and performance by the Company of this Agreement and the Indenture and each other document required to be executed and delivered by the Company in
accordance with the provisions hereof or thereof and (B) a copy of the certificate of incorporation and by-laws of the Company, as in effect on the Closing Date; 

(ii) a certificate or other evidence from the Secretary of State of the State of Delaware, dated as of a date reasonably near
the Closing Date, as to the due incorporation and good standing of the Company in such state; 
 (iii) an incumbency
certificate of the Company as to the person or persons authorized to execute and deliver this Agreement, the Indenture and each other document to be executed by the Company in connection with the transactions contemplated hereby and thereby, and the
specimen signatures of such person or persons; and 
 (iv) one or more certificates of the Loan Trustee and the Subordination
Agent certifying to the reasonable satisfaction of the Pass Through Trustees as to the due authorization, execution, delivery and performance by the Loan Trustee and the Subordination Agent of each of the Operative Documents to which the Loan
Trustee or the Subordination Agent is or will be a party and any other documents to be executed by or on behalf of the Loan Trustee or the Subordination Agent in connection with the transactions contemplated hereby or thereby. 

(f) Representations; No Event of Default or Event of Loss. On the Closing Date, the following statements shall be
correct: (i) the representations and warranties of the Company herein are correct in all material respects as though made on and as of such date, except to the extent that such representations and warranties relate solely to an earlier
date (in which case such representations and warranties are correct on and as of such earlier date) and (ii) no event has occurred and is continuing that constitutes an Event of Default or an Event of Loss with respect to the Aircraft or
would constitute an Event of Default or such an Event of Loss but for the requirement that notice be given or time elapse or both. 

(g) Opinion of Counsel to the Company. Each Pass Through Trustee and the Loan Trustee shall have received
(i) an opinion addressed to it from Thomas Canfield, Esq., General Counsel of the Company (or from such other internal counsel to the Company as shall be reasonably satisfactory to the Pass Through Trustees) substantially in the form set
forth in Exhibit A-1 and (ii) an 

  

					
		 	6	 	
Participation Agreement (Spirit 2017-1 EETC)

[Reg. No.]

 
opinion addressed to it from Debevoise & Plimpton LLP substantially in the form set forth in Exhibit A-2. 

(h) Opinion of Counsel to WTNA, the Loan Trustee, the Pass Through Trustees and the Subordination Agent. Each Pass
Through Trustee and the Loan Trustee shall have received an opinion addressed to it from Morris James LLP, special counsel for WTNA, the Loan Trustee, the Pass Through Trustees and the Subordination Agent, substantially in the form set forth
 in
Exhibit B. 
 (i) Opinion of FAA Counsel. Each Pass Through Trustee and the Loan Trustee shall have received an
opinion addressed to it from Daugherty, Fowler, Peregrin, Haught & Jenson, a Professional Corporation, special FAA counsel in Oklahoma City, Oklahoma, substantially in the form set forth in Exhibit C. 

(j) Certification from the Company. Each Pass Through Trustee and the Loan Trustee shall have received a certificate or
certificates signed by the chief financial or accounting officer, any Senior Vice President, the Treasurer, any Vice President or any Assistant Treasurer (or any other Responsible Officer) of the Company, dated the Closing Date, certifying as to the
correctness of each of the matters stated in Section 3.01(f). 
 (k) Certification from WTNA, the Loan Trustee and
the Subordination Agent. Each Pass Through Trustee shall have received a certificate from WTNA in its individual capacity and as Loan Trustee and Subordination Agent, as applicable, dated the Closing Date, signed by an authorized officer of WTNA
in its individual capacity and as Loan Trustee and Subordination Agent, as applicable, certifying for each such entity that no Loan Trustee Liens or Other Party Liens attributable to it, as applicable, exist, and further certifying as to the
correctness of each of the matters stated in Section 5.01. 
 (l) [Reserved.] 

(m) Insurance Matters. The Loan Trustee shall have received an insurance report of an independent insurance broker and
the related certificates of insurance, each in form and substance reasonably satisfactory to the Loan Trustee, as to the compliance with the terms of Section 7.06 of the Indenture relating to insurance with respect to the Aircraft. 

(n) No Proceedings. No action or proceeding shall have been instituted nor shall governmental action be threatened
before any court or governmental agency, nor shall any order, judgment or decree have been issued or proposed to be issued by any court or governmental agency at the time of the 

  

					
		 	7	 	
Participation Agreement (Spirit 2017-1 EETC)

[Reg. No.]

 
Closing to set aside, restrain, enjoin or prevent the completion and consummation of this Agreement or the transactions contemplated hereby. 

(o) Funding of Pass Through Trusts. Each Pass Through Trustee shall have received in immediately available funds an
amount at least equal to the aggregate purchase price of the Equipment Notes to be purchased from the Company by such Pass Through Trustee. 

(p) Airframe Warranties Agreement. The Loan Trustee shall have received an executed copy of the Airframe Warranties
Agreement substantially in the form set forth in Exhibit D, together with the “Initial Notice” substantially in the form of Schedule 3 thereunder. 

(q) Governmental Approvals. All appropriate action required to have been taken prior to the Closing Date by the FAA or
any governmental or political agency, subdivision or instrumentality of the United States in connection with the transactions contemplated by this Agreement has been taken, and all orders, permits, waivers, authorizations, exemptions and approvals
of such entities required to be in effect on the Closing Date in connection with the transactions contemplated by this Agreement have been issued. 

(r) Satisfaction of Requirements under the Note Purchase Agreement. The conditions precedent set forth in Section 2
of the Note Purchase Agreement, and the requirements set forth in Section 1 of the Note Purchase Agreement relating to the Aircraft and the Equipment Notes, shall have been satisfied. 

Promptly upon the recording of the Indenture (with the Indenture Supplement attached) pursuant to the Transportation Code and the receipt of
appropriate and correct recording information from the FAA, the Company will cause Daugherty, Fowler, Peregrin, Haught & Jenson, a Professional Corporation, special FAA counsel in Oklahoma City, Oklahoma to deliver to the Subordination
Agent, to the Pass Through Trustees, to the Loan Trustee and to the Company an opinion as to the due recording of such instrument and the lack of filing of any intervening documents with respect to the Aircraft. 

Section 3.02. Conditions Precedent to Obligations of the Company. The obligation of the Company to issue and sell the Equipment
Notes is subject to the fulfillment (or waiver by the Company) prior to or on the Closing Date of the following conditions precedent: 

(a) No Changes in Law. No change shall have occurred after the date of this Agreement in applicable law or regulations
thereunder or interpretations thereof by appropriate regulatory authorities or any court that would make it a violation of law or governmental regulations for the Company to enter into any 

  

					
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transaction contemplated by the Operative Documents, the Note Purchase Agreement or the other Pass Through Documents. 

(b) Documentation. The documents referred to in Section 3.01(c) shall have been duly authorized, executed and
delivered by the respective party or parties thereto (other than the Company), shall be in full force and effect and executed counterparts (or copies thereof where indicated) thereof shall have been delivered to the Company, and the Company shall
have received such documents and evidence with respect to WTNA, each Liquidity Provider, the Loan Trustee, the Subordination Agent and each Pass Through Trustee as the Company reasonably requests in order to establish the consummation of the
transactions contemplated by this Agreement, the taking of all corporate and other proceedings in connection therewith and compliance with the conditions herein set forth. 

(c) FAA Filing. The Indenture (with the Indenture Supplement covering the Aircraft attached) shall have been duly filed
for recordation (or shall be in the process of being so duly filed for recordation) with the FAA pursuant to the Transportation Code. The registration of the International Interests (or Prospective International Interests) created under the
Indenture (as supplemented by the Indenture Supplement with respect to the Aircraft) shall have been effected (or shall be in the process of being so effected) on the International Registry in accordance with the Cape Town Treaty. 

(d) Representations and Warranties. On the Closing Date, the representations and warranties herein of WTNA, the Loan
Trustee, the Subordination Agent and the Pass Through Trustees shall be correct as though made on and as of such date, except to the extent that such representations and warranties relate solely to an earlier date (in which case such representations
and warranties shall have been correct on and as of such earlier date), and, insofar as such representations and warranties concern WTNA, the Loan Trustee, the Subordination Agent or any Pass Through Trustee, such party shall have so certified to
the Company. 
 (e) Certain Opinions and Certificates. The Company shall have received each opinion referred to in
Sections 3.01(h) and 3.01(i), each such opinion addressed to the Company or accompanied by a letter from the counsel rendering such opinion authorizing the Company to rely on such opinion as if it were addressed to the Company, and the certificates
referred to in Sections 3.01(e)(iv) and 3.01(k). 
 (f) Certain Opinion of Special Delaware Counsel. The Company shall
have received an opinion addressed to it from Morris James LLP, special Delaware counsel as to UCC matters, substantially in the form set forth in Exhibit E. 

  

					
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 (g) No Proceedings. No action or proceeding shall have been instituted nor
shall governmental action be threatened before any court or governmental agency, nor shall any order, judgment or decree have been issued or proposed to be issued by any court or governmental agency at the time of the Closing to set aside, restrain,
enjoin or prevent the completion and consummation of this Agreement or the transactions contemplated hereby. 
 (h) No
Other Party Liens, etc. The Company shall have received a certificate from WTNA dated the Closing Date, signed by an authorized officer of WTNA, certifying for each Pass Through Trustee that no Other Party Liens attributable to it exist and
further certifying as to the correctness of each of the matters stated in Section 5.01. 
 (i) Payment for Equipment
Notes. The Company shall have been paid by each Pass Through Trustee the aggregate original principal amount of the Equipment Notes being issued to such Pass Through Trustee as set forth on Schedule I opposite the name of such Pass Through
Trust. 
 (j) Tax Form of the Loan Trustee. The Loan Trustee shall have provided a completed and executed copy of IRS
Form W-9 to each of the Company, the Subordination Agent and the Liquidity Providers. 
 ARTICLE 4

 REPRESENTATIONS, WARRANTIES AND INDEMNITIES OF THE COMPANY 

Section 4.01. Representations and Warranties of the Company. The Company represents and warrants that: 

(a) Organization; Authority; Qualification. The Company is a corporation duly incorporated and validly existing in good
standing under the laws of the State of Delaware, is a Certificated Air Carrier, is a Citizen of the United States, has the corporate power and authority to own its properties or hold them under lease and to enter into and perform its obligations
under the Operative Documents to which it is a party and is duly qualified to do business as a foreign corporation in good standing in each other jurisdiction in which the failure to so qualify would have a material adverse effect on the
consolidated financial condition of the Company and its subsidiaries, considered as a whole, and its jurisdiction of organization (as such term is used in Article 9 of the Uniform Commercial Code as in effect in the State of Delaware) is Delaware.

 (b) Corporate Action and Authorization; No Violations. The execution, delivery and performance by the Company of
this Agreement and the 

  

					
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other Operative Documents to which the Company is a party have been duly authorized by all necessary corporate action on the part of the Company, do not require any stockholder approval or
approval or consent of any trustee or holder of any indebtedness or obligations of the Company, except such as have been duly obtained and are in full force and effect, and do not contravene any law, governmental rule, regulation, judgment or order
binding on the Company or the certificate of incorporation or by-laws of the Company or contravene or result in a breach of, or constitute a default under, or result in the creation of any Lien (other than as
permitted under the Indenture) upon the property of the Company under, any material indenture, mortgage, contract or other agreement to which the Company is a party or by which it or any of its properties may be bound or affected. 

(c) Governmental Approvals. Neither the execution and delivery by the Company of this Agreement and the other Operative
Documents to which it is a party, nor the consummation by the Company of any of the transactions contemplated hereby or thereby, requires the authorization, consent or approval of, the giving of notice to, the filing or registration with or the
taking of any other action in respect of, the Department of Transportation, the FAA or any other federal or state governmental authority or agency, or the International Registry, except for (i) the registration of the issuance and sale
of the Pass Through Certificates under the Securities Act and under the securities laws of any state or other jurisdiction in which the Pass Through Certificates may be offered for sale if the laws of such state or other jurisdiction require such
action, (ii) the qualification of the Pass Through Trust Agreements under the Trust Indenture Act, (iii) the orders, permits, waivers, exemptions, authorizations and approvals of the regulatory authorities having jurisdiction
over the Company’s ownership or operation of the Aircraft required to be obtained on or prior to the Closing Date, which orders, permits, waivers, exemptions, authorizations and approvals have been duly obtained and are, or on the Closing Date
will be, in full force and effect, (iv) the filings and registrations referred to in Section 4.01(e), (v) authorizations, consents, approvals, notices and filings required to be obtained, taken, given or made under securities
or Blue Sky or similar laws of the various states and foreign jurisdictions and (vi) consents, approvals, notices, registrations and other actions required to be obtained, given, made or taken only after the date hereof. 

(d) Valid and Binding Agreements. This Agreement and each other Operative Document to which the Company is a party have
been duly executed and delivered by the Company and constitute the legal, valid and binding obligations of the Company enforceable against the Company in accordance with their terms, except as the same may be limited by bankruptcy, insolvency,
reorganization, moratorium or other similar laws affecting the rights of creditors 

  

					
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generally and by general principles of equity and except, in the case of the Indenture, as limited by applicable laws that may affect the remedies provided in the Indenture, which laws, however,
do not make the remedies provided in the Indenture inadequate for the practical realization of the rights and benefits intended to be provided thereby. 

(e) Filings and Recordation. Except for (i) the filing for recordation pursuant to the Transportation Code
of the Indenture (with the Indenture Supplement covering the Aircraft attached), (ii) with respect to the security interests created by such documents, the filing of financing statements (and continuation statements at periodic intervals)
under the Uniform Commercial Code of Delaware, and (iii) the registration on the International Registry of the International Interests (or Prospective International Interests) created under the Indenture (as supplemented by the Indenture
Supplement covering the Aircraft), no further filing or recording of any document is necessary under the laws of the United States or any state thereof as of the Closing Date in order to establish and perfect the security interest in the Aircraft
created under the Indenture in favor of the Loan Trustee as against the Company and any third parties in any applicable jurisdiction in the United States. 

(f) Investment Company Act. The Company is not required to be registered as an “investment company” within the
meaning of the Investment Company Act of 1940, as amended. 
 (g) Title. As of the Closing Date, (i) the
Company has good title to the Aircraft, free and clear of Liens other than Permitted Liens, (ii) the Aircraft has been duly certificated (or shall be in the process of being so duly certificated) by the FAA as to type and airworthiness
in accordance with the terms of the Indenture, (iii) the Indenture (with the Indenture Supplement covering the Aircraft attached) has been duly filed for recordation (or shall be in the process of being so duly filed for recordation)
with the FAA pursuant to the Transportation Code, (iv) the Aircraft is duly registered (or shall be in the process of being so duly registered) with the FAA in the name of the Company, and (v) the registration of the
International Interests (or Prospective International Interests) created under the Indenture (as supplemented by the Indenture Supplement with respect to the Aircraft) shall have been effected (or shall be in the process of being so effected) on the
International Registry in accordance with the Cape Town Treaty. 
 (h) Section 1110. The Loan
Trustee is entitled to the benefits of Section 1110 with respect to the Aircraft being subjected to the Lien of the Indenture on the Closing Date. 

(i) Security Interest. The Indenture creates in favor of the Loan Trustee, for the benefit of the Noteholders, the
Indenture Indemnitees and the 

  

					
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Related Indenture Indemnitees, a valid and (subject to the filings and registrations referred to in Section 4.01(e)) perfected Lien on the Aircraft purported to be subjected to the Lien of
the Indenture on the Closing Date, subject to no equal or prior Lien, except Permitted Liens. 
 (j) Licenses, Permits and
Franchises. The Company holds all licenses, permits and franchises from the appropriate government entities necessary to authorize the Company lawfully to engage in air transportation and to carry on scheduled commercial passenger service as
currently conducted, except where the failure to so hold any such license, permit or franchise would not have a material adverse effect on the financial condition or operations of the Company and its consolidated subsidiaries, taken as a whole. 

Section 4.02. General Indemnity. (a) Claims Defined. For the purposes of this Section 4.02,
“Claims” means any and all liabilities, obligations, losses, damages, penalties, claims, actions, suits, costs or expenses of whatsoever kind and nature (whether or not on the basis of negligence, strict or absolute liability or
liability in tort) that may be imposed on, incurred by, suffered by or asserted against an Indemnitee, as defined below, and, except as otherwise expressly provided in this Section 4.02, includes all reasonable out-of-pocket costs, disbursements and expenses (including reasonable out-of-pocket legal fees and expenses) actually incurred
by an Indemnitee in connection therewith or related thereto. 
 (b) Indemnitee Defined. For the purposes of this
Section 4.02, “Indemnitee” means (i) WTNA and the Loan Trustee, (ii) each separate or additional trustee appointed pursuant to Section 8.02 of the Indenture, (iii) so long as it holds
any Equipment Notes as agent and trustee of any Pass Through Trustee, the Subordination Agent (iv) so long as it is the holder of any Equipment Notes, each Pass Through Trustee, (v) each Liquidity Provider,
(vi) any Related Noteholder, (vii) the Escrow Agent, (viii) the Paying Agent and (ix) each of their respective successors and permitted assigns in such capacities, agents, servants, officers, employees
and directors (the respective agents, servants, officers, employees and directors of each of the foregoing Indemnitees, as applicable, together with such Indemnitee, collectively the “Related Indemnitee Group” of such Indemnitee);
provided that such Persons, to the extent they are not signatories to this Agreement, have expressly agreed in writing to be bound by the terms of this Section 4.02 prior to, or concurrently with, the making of a Claim. If any Indemnitee
fails to comply with any duty or obligation under this Section 4.02 with respect to any Claim, such Indemnitee shall not be entitled to any indemnity with respect to such Claim under this Section 4.02 to the extent such failure was
prejudicial to the Company. No holder of a Pass Through Certificate in its capacity as such holder shall be an Indemnitee. 

  

					
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 (c) Claims Indemnified. Subject to the exclusions stated in
Section 4.02(d), the Company agrees to indemnify, protect, defend and hold harmless on an After-Tax Basis each Indemnitee against Claims resulting from or arising out of (a) the Operative
Documents or the enforcement of any of the terms of the Operative Documents, (b) the Aircraft, the Airframe, any Engine or any Part, including, without limitation, with respect thereto, (i) the sale, purchase, acceptance, non-acceptance or rejection of the Aircraft under the Purchase Agreement or the ownership, possession, use, non-use, substitution, airworthiness, control, maintenance, repair,
operation, registration, re-registration, de-registration, delivery, non-delivery, assignment, abandonment, condition, sale,
lease, sublease, storage, modification, alteration, return, transfer or other disposition of the Aircraft, the Airframe, any Engine or any Part (including, without limitation, latent or other defects, whether or not discoverable, and any claim for
patent, trademark or copyright infringement) by the Company, any Permitted Lessee or any other Person, (ii) tort liability, whether or not arising out of the negligence of any Indemnitee (whether active, passive or imputed), (iii)
death or property damage of passengers, shippers or others, and (iv) environmental control, noise or pollution, and (c) the offer, sale or delivery of any Equipment Notes, Pass Through Certificates or any interest therein or
represented thereby. Without limiting the foregoing and subject to, and without duplication of, the provisions of Section 6.01(a), the Company agrees to pay the reasonable ongoing fees, and the reasonable out-of-pocket costs and expenses actually incurred (including, without limitation, reasonable attorney’s fees and disbursements actually incurred and, to the extent payable as provided in the Indenture,
reasonable compensation and expenses of the Loan Trustee’s agents actually incurred), of the Loan Trustee in connection with the transactions contemplated hereby. 

(d) Claims Excluded. The following are excluded from the Company’s agreement to indemnify an Indemnitee under this
Section 4.02: 
 (i) any Claim to the extent such Claim is attributable to acts or events occurring after
(A) the Lien of the Indenture has been discharged, or (B) the transfer of possession of the Aircraft pursuant to Article IV of the Indenture except to the extent that such Claim is attributable to acts occurring in connection
with the exercise of remedies pursuant to Section 4.02 of the Indenture following the occurrence and continuance of an Event of Default; 

(ii) any Claim to the extent such Claim is, or is attributable to, a Tax (or loss of any Tax benefit), except with respect to
paying indemnity amounts on an After-Tax Basis; 

  

					
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 (iii) any Claim to the extent such Claim is attributable to the negligence or
willful misconduct of such Indemnitee or such Indemnitee’s Related Indemnitee Group; 
 (iv) any Claim to the extent
such Claim is attributable to the noncompliance by such Indemnitee or such Indemnitee’s Related Indemnitee Group with any of the terms of, or any misrepresentation by an Indemnitee or its Related Indemnitee Group contained in, this Agreement,
any other Operative Document or any Pass Through Document to which such Indemnitee or any of such Related Indemnitee Group is a party or any agreement relating hereto or thereto; 

(v) any Claim to the extent such Claim constitutes a Lien attributable to such Indemnitee; 

(vi) any Claim to the extent such Claim is attributable to the offer, sale, assignment, transfer, participation or other
disposition (whether voluntary or involuntary) by or on behalf of such Indemnitee or its Related Indemnitee Group (other than during the occurrence and continuance of an Event of Default; provided that any such offer, sale, assignment,
transfer, participation or other disposition during the occurrence and continuation of an Event of Default shall not be subject to indemnification unless it is made in accordance with the Indenture and applicable law) of any Equipment Note or
interest therein or Pass Through Certificate, all or any part of such Indemnitee’s interest in the Operative Documents or the Pass Through Documents, or any interest in the Collateral or any similar security; 

(vii) any Claim to the extent such Claim is attributable to (A) a failure on the part of the Loan Trustee to
distribute in accordance with this Agreement or any other Operative Document any amounts received and distributable by it hereunder or thereunder, (B) a failure on the part of the Subordination Agent to distribute in accordance with the
Intercreditor Agreement any amounts received and distributable by it thereunder, (C) a failure on the part of any Pass Through Trustee to distribute in accordance with the Pass Through Trust Agreement to which it is a party any amounts
received and distributable by it thereunder, (D) a failure on the part of the Escrow Agent to distribute in accordance with any Escrow Agreement any amounts received and distributable by it thereunder, (E) a failure on the
part of the Paying Agent to distribute in accordance with any Escrow Agreement any amounts received and distributable by it thereunder or (F) a failure on the part of the Depositary to pay funds payable by it in accordance with any
Deposit Agreement; 

  

					
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 (viii) any Claim to the extent such Claim is attributable to the authorization or
giving or withholding of any future amendments, supplements, waivers or consents with respect to any Operative Document or any Pass Through Document, other than such as have been requested by the Company or that occur as the result of an Event of
Default, or such as are expressly required or contemplated by the provisions of the Operative Documents or the Pass Through Documents; 

(ix) any Claim to the extent such Claim is payable or borne by (A) the Company pursuant to any indemnification,
compensation or reimbursement provision of any other Operative Document or any Pass Through Document or (B) a Person other than the Company pursuant to any provision of any Operative Document or any Pass Through Document; 

(x) any Claim to the extent such Claim is an ordinary and usual operating or overhead expense or not an out-of-pocket expense actually incurred; 
 (xi)
any Claim to the extent such Claim is incurred on account of or asserted as a result of (A) any “prohibited transaction” within the meaning of Section 406 of ERISA or Section 4975 of the Code or any foreign, federal,
state or local law which is substantially similar to the prohibited transaction provisions of Section 406 of ERISA or Section 4975 of the Code (“Similar Law”) or (B) any breach of fiduciary duty under ERISA; 

(xii) any Claim to the extent such Claim is attributable to one or more of the other aircraft financed through the offering of
Pass Through Certificates (in the event of doubt, any Claim shall be allocated between the Aircraft and such other aircraft in the same proportion that the then outstanding Equipment Notes bear to the then outstanding equipment notes issued with
respect to the other aircraft and held by the Pass Through Trustees); 
 (xiii) any Claim to the extent such Claim is
attributable to any amount which any Indemnitee expressly agrees shall not be paid by, borne by, or reimbursed by the Company; 

(xiv) any Claim by an Indemnitee related to the status of such Indemnitee as a passenger or shipper on any of the
Company’s aircraft or as a party to a marketing or promotional or other commercial agreement with the Company unrelated to the transactions contemplated by the Operative Documents; and 

  

					
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 (xv) any Claim to the extent such Claim is attributable to the offer or sale by
an Indemnitee (or any member of such Indemnitee’s Related Indemnitee Group) of any interest in the Aircraft, the Equipment Notes, the Pass Through Certificates, or any similar interest, in violation of the Securities Act or other applicable
federal, state or foreign securities laws (other than any thereof caused by acts or omissions of the Company of any of its affiliates). 

(e) Insured Claims. In the case of any Claim indemnified by the Company hereunder that is covered by a policy of
insurance maintained by the Company, each Indemnitee agrees to cooperate, at the Company’s expense, with the insurers in the exercise of their rights to investigate, defend and compromise such Claim. 

(f) Claims Procedure. An Indemnitee shall promptly notify the Company of any Claim as to which indemnification is
sought. The failure to provide such prompt notice shall not release the Company from any of its obligations to indemnify hereunder except to the extent that the Company is prejudiced by such failure or the Company’s indemnification obligations
are increased as a result of such failure (in which event the Company shall not be responsible for such additional indemnification obligations). Such Indemnitee shall promptly submit to the Company all additional information in such
Indemnitee’s possession to substantiate such Claim as the Company reasonably requests. Subject to the rights of the Company’s insurers, the Company may, at its sole cost and expense, investigate any Claim, and may in its sole discretion
defend or compromise any Claim. At the Company’s expense, any Indemnitee shall cooperate with all reasonable requests of the Company in connection therewith. Such Indemnitee shall not enter into a settlement or other compromise with respect to
any Claim without the prior written consent of the Company, which consent shall not be unreasonably withheld or delayed, unless such Indemnitee waives its right to be indemnified with respect to such Claim. Where the Company or its insurers
undertake the defense of an Indemnitee with respect to a Claim, no additional legal fees or expenses of such Indemnitee in connection with the defense of such Claim shall be indemnified hereunder unless such fees or expenses were incurred at the
written request of the Company or such insurers. Subject to the requirements of any policy of insurance, an Indemnitee may participate at its own expense in any judicial proceeding controlled by the Company pursuant to the preceding provisions;
provided that such party’s participation does not, in the opinion of outside counsel appointed by the Company or its insurers to conduct such proceedings, interfere with such control. Such participation shall not constitute a waiver of
the indemnification provided in this Section 4.02. Notwithstanding anything to the contrary contained herein, the Company shall not under any circumstances be liable for the fees and expenses of

  

					
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more than one counsel for all Indemnitees with respect to any one Claim. Notwithstanding anything to the contrary contained herein, an Indemnitee shall not under any circumstances be required or
deemed to be required to contest any Claim or to assume responsibility for or control of any judicial proceeding with respect thereto. The Company will provide the relevant Indemnitee with such information not within the control of such Indemnitee,
as is in the Company’s control or is reasonably available to the Company, which such Indemnitee may reasonably request and will otherwise cooperate with such Indemnitee so as to enable such Indemnitee to fulfill its obligations under this
Section 4.02. If an Indemnitee is not a party to this Agreement, the Company may require such Indemnitee to agree in writing to the terms of this Section 4.02 and Section 7.10 of this Agreement prior to making any payment to such
Indemnitee under this Section 4.02. 
 (g) Subrogation. To the extent that a Claim is in fact paid in full by the Company or its
insurer, the Company or such insurer (as the case may be) shall, without any further action, be subrogated to the rights and remedies of the Indemnitee on whose behalf such Claim was paid with respect to the transaction or event giving rise to such
Claim. Such Indemnitee shall give such further assurances or agreements and shall cooperate with the Company or such insurer, as the case may be, to permit the Company or such insurer to pursue such rights and remedies, if any, to the extent
reasonably requested by the Company. So long as no Event of Default has occurred and is continuing, if an Indemnitee receives any payment, in whole or in part, from any party other than the Company or its insurers with respect to any Claim paid by
the Company or its insurers, it shall promptly pay over to the Company the amount received (but not an amount in excess of the amount the Company or any of its insurers has paid in respect of such Claim). Any amount referred to in the preceding
sentence that is payable to the Company shall not be paid to the Company, or, if it has been previously paid directly to the Company, shall not be retained by the Company, if at the time of such payment an Event of Default has occurred and is
continuing, but shall be paid to and held by the Loan Trustee as security for the obligations of the Company under the Operative Documents. If the Company agrees, such amount payable shall be applied against the Company’s obligations thereunder
when and as they become due and payable. At such time as such Event of Default is no longer continuing, such amount, to the extent not previously so applied against the Company’s obligations, shall be paid to the Company. 

(h) No Guaranty. Nothing set forth in this Section 4.02 constitutes a guarantee by the Company that the Aircraft at any time will
have any particular value, useful life or residual value. 
 (i) Payments; Interest. Any amount payable to any Indemnitee on account
of a Claim shall be paid within 30 days after receipt by the Company of a 

  

					
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written demand therefor from such Indemnitee accompanied by a written statement describing in reasonable detail the Claims that are the subject of and basis for such indemnity and the computation
of the amount payable. Any payments made pursuant to this Section 4.02 directly to an Indemnitee or to the Company, as the case may be, shall be made in immediately available funds at such bank or to such account as is specified by the payee in
written directions to the payor or, if no such directions are given, by check of the payor payable to the order of the payee and mailed to the payee by certified mail, return receipt requested, postage prepaid to its address referred to in
Section 7.01. To the extent permitted by applicable law, interest at the Past Due Rate shall be paid, on demand, on any amount or indemnity not paid when due pursuant to this Section 4.02 until the same is paid. Such interest shall be paid
in the same manner as the unpaid amount in respect of which such interest is due. 
 (j) Tax Deduction or Credit. If, by reason of any
payment made to or for the account of any Indemnitee by the Company, or by reason of any Claim of any Indemnitee paid or indemnified against by the Company, in each case pursuant to this Section 4.02, such Indemnitee realizes a Tax deduction or
credit not previously taken into account in computing such payment, such Indemnitee shall promptly pay to the Company an amount equal to the sum of (i) the actual reduction in Taxes realized by such Indemnitee which is attributable to
such deduction or credit, and (ii) the actual reduction in Taxes realized by such Indemnitee as a result of any payment made by such Indemnitee pursuant to this sentence; provided that the amount payable by such Indemnitee
pursuant to this sentence shall not exceed the sum of all amounts previously paid by the Company to such Indemnitee pursuant to this Section 4.02; provided, further, that any such excess shall be carried forward and applied to
reduce pro tanto any subsequent obligations of the Company to make payments to such Indemnitee pursuant to this Section 4.02. If such Tax deduction or credit is subsequently disallowed or lost, upon written notice from the Indemnitee the
Company shall promptly repay all amounts paid to it pursuant to this Section 4.02(j) in respect of such disallowed or lost deduction or credit. If, at the time an amount would otherwise be payable to the Company under this Section 4.02(j),
any Event of Default shall have occurred and be continuing, such amount shall be held by the relevant Indemnitee as security for the obligations of the Company under the Operative Documents. At such time as no Event of Default is continuing, such
amount or portion thereof shall be applied to offset the Company’s outstanding obligations under the Operative Documents and any remaining amount after such application shall be paid to the Company. 

  

					
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 ARTICLE 5 

REPRESENTATIONS, WARRANTIES AND COVENANTS OF WTNA 

Section 5.01. Representations, Warranties and Covenants of WTNA. WTNA, generally, and as each of the Loan Trustee, the
Subordination Agent and the Pass Through Trustee as it relates to it, represents, warrants and covenants that: 
 (a)
Organization; Authority. WTNA is a national banking association duly organized and validly existing in good standing under the laws of the United States, is eligible to be the Loan Trustee under Section 8.01(a) of the Indenture, will
promptly comply with Section 8.01(a) of the Indenture and has full power, authority and legal right to enter into and perform its obligations under each of the Operative Documents and the Pass Through Documents to which WTNA, the Loan Trustee,
the Subordination Agent or any Pass Through Trustee is a party and, in its capacity as Loan Trustee and Pass Through Trustee, respectively, to authenticate the Equipment Notes and the Pass Through Certificates, respectively. WTNA is qualified to act
as Loan Trustee under Section 8.01(c) of the Indenture. WTNA is a Citizen of the United States (without the use of a voting trust agreement), and will resign as the Loan Trustee under the Indenture promptly after it obtains actual knowledge
that it has ceased to be such a Citizen of the United States. 
 (b) Due Authorization; No Violations. The execution,
delivery and performance by WTNA, individually or in its capacity as Loan Trustee, Subordination Agent or Pass Through Trustee, as the case may be, of this Agreement, each of the other Operative Documents and each of the Pass Through Documents to
which WTNA, the Loan Trustee, the Subordination Agent or any Pass Through Trustee is a party, the performance by WTNA, individually or in its capacity as Loan Trustee, Subordination Agent or Pass Through Trustee, as the case may be, of its
obligations thereunder and the consummation on the Closing Date or the Issuance Date, as the case may be, of the transactions contemplated thereby, and the authentication of the Equipment Notes and the Pass Through Certificates, respectively, to be
delivered on the Closing Date or the Issuance Date, as the case may be: (i) have been duly authorized by all necessary action on the part of WTNA, the Loan Trustee, the Subordination Agent and each Pass Through Trustee, as the case may
be, (ii) do not violate any law or regulation of the United States or of the state of the United States in which WTNA is located and which governs the banking and trust powers of WTNA or any order, writ, judgment or decree of any court,
arbitrator or governmental authority applicable to WTNA, the Loan Trustee, the Subordination Agent or any Pass Through Trustee or any of their assets, (iii) will not violate any provision of the charter or
by-laws of WTNA and (iv) will not violate any provision of, or constitute a default under, any mortgage, indenture, contract, agreement or undertaking to

  

					
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which any of WTNA, the Loan Trustee, the Subordination Agent or any Pass Through Trustee is a party or by which any of them or their respective properties may be bound or affected. 

(c) Approvals. Neither the execution and delivery by WTNA, individually or in its capacity as Loan Trustee,
Subordination Agent or Pass Through Trustee, as the case may be, of this Agreement, any other Operative Document or any Pass Through Document to which WTNA, the Loan Trustee, the Subordination Agent or any Pass Through Trustee is a party, nor the
consummation by WTNA, the Loan Trustee, the Subordination Agent or any Pass Through Trustee of any of the transactions contemplated hereby or thereby, requires the authorization, consent or approval of, the giving of notice to, the filing or
registration with, or the taking of any other action in respect of, (i) any governmental authority or agency of the United States or the state of the United States where WTNA is located and regulating the banking and trust powers of WTNA
or (ii) any trustee or other holder of any debt of WTNA. 
 (d) Valid and Binding Agreements. This
Agreement, each other Operative Document and each Pass Through Document to which WTNA, the Loan Trustee, the Subordination Agent or any Pass Through Trustee is a party have been duly executed and delivered by WTNA, individually and in its capacity
as Loan Trustee, Subordination Agent or Pass Through Trustee, as the case may be, and constitute the legal, valid and binding obligations of WTNA, the Loan Trustee, the Subordination Agent and such Pass Through Trustee, as the case may be,
enforceable against it in accordance with its terms, except as the same may be limited by bankruptcy, insolvency, reorganization, moratorium or other similar laws affecting the rights of creditors generally and by general principles of equity. 

(e) No Loan Trustee Liens or Other Party Liens. It unconditionally agrees with and for the benefit of the parties to
this Agreement that it will not directly or indirectly create, incur, assume or suffer to exist any Loan Trustee Lien or Other Party Lien attributable to it, and it agrees that it will, at its own cost and expense, promptly take such action as may
be necessary to discharge and satisfy in full any such Lien. 
 (f) Intercreditor Agreement. The Equipment Notes to be
issued to the Subordination Agent pursuant hereto are being acquired by it to be held under the Intercreditor Agreement. 

(g) Funds Transfer Fees. Each of WTNA, the Loan Trustee, the Subordination Agent and each Pass Through Trustee agrees
that it will not impose any lifting charge, cable charge, remittance charge or any other charge or fee on any transfer by the Company of funds to, through or by WTNA, the Loan Trustee, the Subordination Agent or such Pass Through Trustee pursuant to
this 

  

					
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Agreement, any other Operative Document or any Pass Through Document, except as may be otherwise agreed to in writing by the Company. 

(h) Confidentiality. Each of WTNA, the Loan Trustee, the Subordination Agent and each Pass Through Trustee agrees to be
bound by the terms of Section 10.16 of the Indenture. 
 (i) Certain Tax Matters. There are no Taxes payable by
WTNA, the Loan Trustee, the Subordination Agent or the Pass Through Trustees imposed by the State of Delaware or any political subdivision or taxing authority thereof, in connection with the execution, delivery or performance by WTNA, the Loan
Trustee or the Subordination Agent or any Pass Through Trustee of any Operative Document or any Pass Through Document (other than franchise or other Taxes based on or measured by any fees or compensation received by any such Person for services
rendered in connection with the transactions contemplated by the Operative Documents or the Pass Through Documents), and there are no Taxes payable by any Pass Through Trustee imposed by the State of Delaware or any political subdivision thereof in
connection with the acquisition, possession or ownership by such Pass Through Trustee of any of the Equipment Notes (other than franchise or other Taxes based on or measured by any fees or compensation received by such Pass Through Trustee for
services rendered in connection with the transactions contemplated by the Operative Documents or the Pass Through Documents) and, assuming that the Pass Through Trusts will not be taxable for Federal income tax purposes as corporations, but, rather,
will be characterized for such purposes as grantor trusts or partnerships, the Pass Through Trusts will not be subject to any Taxes imposed by the State of Delaware or any political subdivision thereof. 

(j) Limitation on Situs of Activities. Except with the consent of the Company, which shall not be unreasonably withheld:
WTNA will act as Pass Through Trustee, Subordination Agent and Loan Trustee solely through its offices within the State of Delaware, except for such services as may be performed for it by independent agents in the ordinary course of business, but
not directly by it, in other states. 
 (k) No Proceedings. There are no pending or, to its knowledge, threatened
actions or proceedings against WTNA, the Loan Trustee, the Subordination Agent or any Pass Through Trustee before any court or administrative agency which individually or in the aggregate, if determined adversely to it, would materially adversely
affect the ability of WTNA, the Loan Trustee, the Subordination Agent or any Pass Through Trustee to perform its obligations under any Operative Document or any Pass Through Document. 

  

					
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 (l) Other Representations. The representations and warranties contained in
Section 7.15 of the Basic Pass Through Trust Agreement and Section 7.04 of each Trust Supplement are true, complete and correct as of the Closing Date. 

ARTICLE 6 
 OTHER
COVENANTS AND AGREEMENTS 
 Section 6.01. Other Agreements. (a) Fees and Expenses. The Company agrees promptly
to pay (without duplication of any other obligation the Company may have to pay such amounts) (1) the initial and annual fees and (to the extent the Loan Trustee is entitled to be reimbursed for its reasonable expenses) the reasonable
expenses of the Loan Trustee in connection with the transactions contemplated hereby and (2) the following expenses incurred by the Loan Trustee, the Subordination Agent and the Pass Through Trustees in connection with the negotiation,
preparation, execution and delivery of this Agreement, the other Operative Documents and the other documents or instruments referred to herein or therein: 

(i) the reasonable fees, expenses and disbursements of (A) Morris James LLP, special counsel for the Loan Trustee,
the Subordination Agent and the Pass Through Trustees, (B) Morris James LLP, special Delaware counsel as to UCC matters, and (C) Daugherty, Fowler, Peregrin, Haught & Jenson, a Professional Corporation, special FAA
counsel in Oklahoma City, Oklahoma, in each case to the extent actually incurred; and 
 (ii) all reasonable expenses
actually incurred in connection with printing and document production or reproduction expenses, and in connection with the filing of Uniform Commercial Code financing statements. 

(b) Continuing Registration and Re-Registration. The Loan Trustee, the
Noteholders, the Subordination Agent and each Pass Through Trustee agree to execute and deliver, at the Company’s expense, all such documents and consents as the Company reasonably requests for the purpose of continuing the registration of the
Aircraft at the FAA in the Company’s name or for the purpose of registering or maintaining any registration on the International Registry in respect of the Aircraft. In addition, each of the Loan Trustee, the Subordination Agent, each Pass
Through Trustee and any other Noteholder agrees, for the benefit of the Company, to cooperate with the Company in effecting any foreign registration of the Aircraft pursuant to Section 7.02(e) of the Indenture; provided that prior to any
such change in the country of registry of the Aircraft the conditions set forth 

  

					
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in Section 7.02(e) of the Indenture are met to the reasonable satisfaction of, or waived by, the Loan Trustee. 

(c) Quiet Enjoyment. Each of WTNA, the Loan Trustee, the Subordination Agent, each Pass Through Trustee, any other
Noteholder, the Class AA Liquidity Provider (by having entered into the Class AA Liquidity Facility), the Class A Liquidity Provider (by having entered into the Class A Liquidity Facility) and the Class B Liquidity Provider
(by having entered into the Class B Liquidity Facility) agrees that, unless an Event of Default shall have occurred and be continuing, it shall not (and shall not permit any Affiliate or other Person claiming by, through or under it to) take
any action contrary to, or otherwise in any way interfere with or disturb (and then only in accordance with the Indenture), the quiet enjoyment of the use and possession of the Aircraft, the Airframe, any Engine or any Part by the Company or any
transferee of any interest in any thereof permitted under the Indenture. 
 (d) No Noteholder Liens. Each Noteholder,
including, without limitation, the Subordination Agent and each Pass Through Trustee, unconditionally agrees with and for the benefit of the parties to this Agreement that it will not directly or indirectly create, incur, assume or suffer to exist
any Noteholder Liens, and such Noteholder agrees that it will, at its own cost and expense, promptly take such action as may be necessary to discharge and satisfy in full any such Noteholder Lien; and each Noteholder hereby agrees to indemnify,
protect, defend and hold harmless each Indemnitee and the Company against claims in any way resulting from or arising out of a breach by it of its obligations under this Section 6.01(d). 

(e) Agreement to be Bound; Transfer. By its acceptance of its Equipment Notes, each Noteholder unconditionally agrees
for the benefit of the Company and the Loan Trustee: (i) to be bound by and to perform and comply with all of the terms of such Equipment Notes, the Indenture and this Agreement applicable to such Noteholder and (ii) that it
will not transfer any Equipment Note (or any part thereof) to any entity unless such transfer complies with and does not violate the Transportation Code, the Securities Act (or require registration under such Act) or any other law (including,
without limitation, ERISA, the Code and Similar Law), and does not create a relationship that would be in violation thereof, or result in a “prohibited transaction” under Section 406 of ERISA, Section 4975 of the Code or Similar
Law or require qualification of an indenture under the Trust Indenture Act. 
 (f) Tax Returns. Each Pass Through
Trustee shall file any Tax returns required to be filed by the related Pass Through Trust and the Company shall pay the Applicable Portion of any expenses relating thereto. The Company shall be responsible for the Applicable Portion of any interest
or penalties related to any 

  

					
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Pass Through Trustee’s failure to file any such Tax returns required to be filed by the relevant Pass Through Trust, except to the extent that such failure is attributable to the gross
negligence or willful misconduct of such Pass Through Trustee. For purposes of this Section 6.01(f), the “Applicable Portion” of any amount shall equal such amount multiplied by a fraction, the numerator of which shall be the
sum of the then outstanding aggregate principal amount of the Equipment Notes held by the relevant Pass Through Trustee, and the denominator of which shall be the sum of the outstanding aggregate principal amount of all “Equipment Notes”
issued under each of the “Indentures” (in each case as defined in the Intercreditor Agreement) held by such Pass Through Trustee. 

(g) No Petition. Each of the Company, the Loan Trustee, each Pass Through Trustee, the Subordination Agent and any other
Noteholder covenants that (i) until one year and one day after the Series AA Equipment Notes have been paid in full, it shall not acquiesce, petition or otherwise invoke or cause or join in invoking or causing the Class AA Pass
Through Trust or any other Person to invoke the process of any governmental authority for the purpose of commencing or sustaining a case (whether voluntary or not) against the Class AA Pass Through Trust under any bankruptcy, insolvency or
similar law or appointing a receiver, liquidator, assignee, trustee, custodian, sequestrator or other similar official of the Class AA Pass Through Trust or any substantial part of its property or ordering the
winding-up or liquidation of the affairs of the Class AA Pass Through Trust, (ii) until one year and one day after the Series A Equipment Notes have been paid in full, it shall not acquiesce,
petition or otherwise invoke or cause or join in invoking or causing the Class A Pass Through Trust or any other Person to invoke the process of any governmental authority for the purpose of commencing or sustaining a case (whether voluntary or
not) against the Class A Pass Through Trust under any bankruptcy, insolvency or similar law or appointing a receiver, liquidator, assignee, trustee, custodian, sequestrator or other similar official of the Class A Pass Through Trust or any
substantial part of its property or ordering the winding-up or liquidation of the affairs of the Class A Pass Through Trust, (iii) until one year and one day after the Series B Equipment Notes
have been paid in full, it shall not acquiesce, petition or otherwise invoke or cause or join in invoking or causing the Class B Pass Through Trust or any other Person to invoke the process of any governmental authority for the purpose of
commencing or sustaining a case (whether voluntary or not) against the Class B Pass Through Trust under any bankruptcy, insolvency or similar law or appointing a receiver, liquidator, assignee, trustee, custodian, sequestrator or other similar
official of the Class B Pass Through Trust or any substantial part of its property or ordering the winding-up or liquidation of the affairs of the Class B Pass Through Trust, and (iv) if
any Additional Series Equipment Notes of any Series shall have been issued, until one year and one day after such Additional Series Equipment Notes have been paid in full, it shall not acquiesce, petition or

  

					
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otherwise invoke or cause or join in invoking or causing the related Additional Series Pass Through Trust or any other Person to invoke the process of any governmental authority for the purpose
of commencing or sustaining a case (whether voluntary or not) against such Additional Series Pass Through Trust under any bankruptcy, insolvency or similar law or appointing a receiver, liquidator, assignee, trustee, custodian, sequestrator or other
similar official of such Additional Series Pass Through Trust or any substantial part of its property or ordering the winding-up or liquidation of the affairs of such Additional Series Pass Through Trust. 

Section 6.02. Certain Covenants of the Company. The Company covenants and agrees with the Loan Trustee as follows: 

(a) Further Assurances. On and after the Closing, the Company will cause to be done, executed, acknowledged and
delivered such further acts, conveyances and assurances as the Loan Trustee reasonably requests for accomplishing the purposes of this Agreement and the other Operative Documents; provided that any instrument or other document so executed by
the Company will not expand any obligations or limit any rights of the Company in respect of the transactions contemplated by the Operative Documents. 

(b) Filing and Recordation of the Indenture; Registration of International Interests. The Company, at its expense, will
cause the Indenture (with the Indenture Supplement covering the Aircraft attached) to be promptly filed and recorded, or filed for recording, with the FAA to the extent permitted under the Transportation Code and the rules and regulations of the FAA
thereunder. In addition, on or prior to the Closing Date, the Company will cause the registration of the International Interests (or Prospective International Interests) created under the Indenture (as supplemented by the Indenture Supplement with
respect to the Aircraft) to be effected (or be in the process of being effected) on the International Registry in accordance with the Cape Town Treaty, and shall, as and to the extent applicable, consent to such registration upon the issuance of a
request for such consent by the International Registry. 
 (c) Maintenance of Filings. The Company, at its expense,
will take, or cause to be taken, such action with respect to the recording, filing, re-recording and refiling of the Indenture and any financing statements or other instruments as are necessary to maintain, so
long as the Indenture is in effect, the perfection of the security interests created by the Indenture or will furnish the Loan Trustee timely notice of the necessity of such action, together with such instruments, in execution form, and such other
information as may be required to enable the Loan Trustee to take such action. In addition, the Company will pay any and all recording, stamp and other similar Taxes payable in the United States, and in any other jurisdiction where the Aircraft is
registered, in connection with the 

  

					
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execution, delivery, recording, filing, re-recording and refiling of the Indenture or any such financing statements or other instruments. The Company will
notify the Loan Trustee of any change in its jurisdiction of organization (as such term is used in Article 9 of the Uniform Commercial Code as in effect in the State of Delaware) promptly after making such change or in any event within the period of
time necessary under applicable law to prevent the lapse of perfection (absent refiling) of financing statements filed under the Operative Documents. 

(d) Maintenance of Corporate Existence. The Company shall at all times maintain its corporate existence except as
permitted by Section 6.02(e). 
 (e) Merger; Consolidation; Transfer of Substantially All Assets. 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 the Loan
Trustee continues to be entitled to any benefits of Section 1110 with respect to the Aircraft, be a Citizen of the United States and a Certificated Air Carrier and shall execute and deliver to the Loan 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 Operative Documents to which the Company is a party to be performed or observed by the Company; 

(ii) if the Aircraft is, at the time, registered with the FAA or such Person is located in a “Contracting State” (as
such term is used in the Cape Town Treaty), such Person makes such filings and recordings with the FAA pursuant to the Act and registration under the Cape Town Treaty, or if the Aircraft is, at the time, not registered with the FAA, such Person
makes such filings and recordings with the applicable aviation authority, as are necessary to evidence such consolidation, merger, conveyance, transfer or lease; 

(iii) immediately after giving effect to such transaction, no Event of Default shall have occurred and be continuing; and 

(iv) the Company shall deliver to the Loan Trustee and each Liquidity Provider 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 6.02(e) and that all conditions precedent herein relating to such
transaction have been complied with. 

  

					
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 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 6.02(e), 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 this Agreement and the other Operative Documents with the same effect as if such successor Person had been named as the Company herein. 

(f) Section 1110. The Company shall remain a Certificated Air Carrier for as long as and to the
extent required under Section 1110 in order that the Loan Trustee shall be entitled to any of the benefits of Section 1110 with respect to the Aircraft. 

(g) Additional Information. Promptly after the occurrence of a Triggering Event or an Indenture Event of Default
resulting from the failure of the Company to make payments on any Equipment Note and on every Regular Distribution Date while the Triggering Event or such Indenture Event of Default shall be continuing, the Company will, at the Subordination
Agent’s request from time to time but in any event no more frequently than once every three months, provide to the Subordination Agent a statement setting forth the following information with respect to the Aircraft if then subject to the lien
of the Indenture: (A) whether the Aircraft is currently in service or parked in storage, (B) the maintenance status of the Aircraft, and (C) the location of the Engines. As used in this Section 6.02(g), the
terms “Triggering Event”, “Indenture Event of Default” and “Regular Distribution Date” shall have the respective meanings set forth in the Intercreditor Agreement. 

ARTICLE 7 

MISCELLANEOUS 

Section 7.01. Notices. Unless otherwise expressly specified or permitted by the terms hereof, all notices required or permitted
under the terms and provisions of this Agreement shall be in English and in writing, and any such notice may be given by United States mail, courier service or facsimile, and any such notice shall be effective when delivered (or, if mailed, three
Business Days after deposit, postage prepaid, in the first class United States mail, and if delivered by facsimile, upon completion of transmission and confirmation by the sender (by a telephone call to a representative of the recipient or by
machine confirmation) that such transmission was received) addressed as follows: 
 if to the Company, addressed to: 

  

					
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 Spirit Airlines, Inc. 

2800 Executive Way 
 Miramar,
Florida 33025 
 Attention: Legal Department and Treasury Department 

Telephone: (954) 447-7914 (Legal) 

Facsimile: (954) 447-7854 (Legal) 

if to WTNA, the Loan Trustee, the Subordination Agent or any Pass Through Trustee, addressed to: 

Wilmington Trust, National Association 

1100 North Market Street 

Wilmington, Delaware 19890-1605 

Attention: Corporate Trust Administration – Jacqueline Solone 

Ref.: Spirit 2017-1 EETC 

Telephone: (302) 636-6387 

Facsimile: (302) 636-4140 

or if to any subsequent Noteholder, addressed to such Noteholder at its address set forth in the Equipment Note Register maintained pursuant to
Section 2.07 of the Indenture. 
 Any party, by notice to the other parties hereto, may designate different addresses for subsequent
notices or communications. Whenever the words “notice” or “notify” or similar words are used herein, they mean the provision of formal notice as set forth in this Section 7.01. 

Section 7.02. Survival of Representations, Warranties, Indemnities, Covenants and Agreements. The indemnities set forth in
Section 4.02 of this Agreement and the confidentiality obligations set forth in Section 5.01(h) of this Agreement shall survive the making of the loans, the transfer of any interest by any Noteholder of its Equipment Note and the
expiration or termination of any Operative Documents (in the case of the indemnities, to the extent arising out of acts or events occurring prior to such expiration or termination). 

Section 7.03. Governing Law. THIS AGREEMENT HAS BEEN DELIVERED IN THE STATE OF NEW YORK AND 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 7.04. Severability. To the extent permitted by applicable law, any provision of this Agreement which is prohibited or
unenforceable in any jurisdiction shall, as to such jurisdiction, be ineffective to the extent of such prohibition or unenforceability without invalidating the remaining provisions hereof, and any such prohibition or unenforceability in any
jurisdiction shall not invalidate or render unenforceable such 

  

					
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provision in any other jurisdiction. 
 Section 7.05. No Oral Modifications or
Continuing Waivers; Consents. Subject to Section 9.03 of the Indenture, no terms or provisions of this Agreement may be changed, waived, discharged or terminated orally, but only by an instrument in writing signed by the party against which
the enforcement of the change, waiver, discharge or termination is sought. No such change, waiver, discharge or termination shall be effective unless a signed copy thereof is delivered to the Loan Trustee. 

Section 7.06. Effect of Headings and Table of Contents. The headings of the various Articles and Sections herein and in the Table
of Contents are for convenience of reference only and do not define or limit any of the terms or provisions hereof. 
 Section 7.07.
Successors and Assigns. All covenants, agreements, representations and warranties in this Agreement by the Company, by WTNA, individually or as Loan Trustee, Subordination Agent or Pass Through Trustee, or by any Noteholder, shall bind and
inure to the benefit of and be enforceable by the Company, and subject to the terms of Section 6.02(e), its successors and permitted assigns, each Pass Through Trustee and any successor or other trustee under the Pass Through Trust Agreement to
which it is a party, the Subordination Agent and its successor under the Intercreditor Agreement and the Loan Trustee and its successor under the Indenture, whether so expressed or not. 

Section 7.08. Benefits of Agreement. Subject to the next sentence, nothing in this Agreement, express or implied, gives to any
Person, other than the parties hereto and their successors hereunder, any benefit or any legal or equitable right, remedy or claim under this Agreement, except as expressly provided herein. The Company agrees and acknowledges that each Liquidity
Provider, and each separate or additional trustee appointed pursuant to Section 8.02 of the Indenture shall be third party beneficiaries of the covenants and agreements of the Company with respect to the indemnities contained in
Section 4.02 and may rely on the covenants and agreements of the Company with respect to such indemnities to the same extent as if the covenants and agreements of the Company with respect to such indemnities were made to such Liquidity Provider
or such trustee, as the case may be, directly. WTNA generally, and each of the Loan Trustee, the Subordination Agent and each Pass Through Trustee, insofar as relating to each such Person, agrees and acknowledges that each Liquidity Provider is a
third party beneficiary of the representations and warranties set forth in Section 5.01, and that such Liquidity Provider may rely on such representations and warranties to the same extent as if such representations and warranties were made to
such Liquidity Provider directly. 
 Section 7.09. Counterparts. This Agreement may be executed in any number of counterparts.
Each of the parties hereto shall not be required to execute the same counterpart. Each counterpart of this Agreement including a signature page or pages 

  

					
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executed by each of the parties hereto shall be an original counterpart of this Agreement, but all of such counterparts shall together constitute one instrument. 

Section 7.10. 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 Documents hereby (a) 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 (b) 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 7.11. Further Assurances. Each party
hereto shall execute, acknowledge and deliver or shall cause to be executed, acknowledged and delivered, all such further agreements, instruments, certificates or documents, and shall do and cause to be done such further acts and things, including,
without limitation, making or consenting to registrations (or discharges thereof, as appropriate) with respect to the Indenture on the International Registry and appointing Daugherty, Fowler, Peregrin, Haught & Jenson, a Professional
Corporation, as its “professional user entity” (as defined in the Cape Town Treaty) to make or consent to any registrations (or discharges thereof, as appropriate) on the International Registry with respect to the Airframe or any Engine,
in any case, as any other party hereto shall reasonably request in connection with the administration of, or to carry out more effectively the purposes of, or to better assure and confirm into such other party the rights and benefits to be provided
under this Agreement, the other Operative Documents and the Pass Through Documents. 
 Section 7.12.
Section 1110. It is the intention of each of the Company, the Noteholders (such intention being evidenced by each of their acceptance of an Equipment Note), the Loan Trustee and other parties hereto that the security
interest created by the Indenture, to the fullest extent available under applicable law, entitles the Loan Trustee, on behalf of the Noteholders, to all of the benefits of Section 1110 with respect to the Aircraft, Airframe, Engines and Parts.

  

  

					
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 IN WITNESS WHEREOF, the parties hereto have caused this Participation Agreement to be duly
executed by their respective officers thereunto duly authorized as of the date first above written. 
  

			
	SPIRIT AIRLINES, INC.
		
	By:	 	  

		 	Name:
		 	Title:

  

			
	WILMINGTON TRUST, NATIONAL ASSOCIATION, as Pass Through Trustee under each of the Pass Through Trust Agreements

 
			
		
	By:	 	  

		 	Name:
		 	Title:

  

			
	WILMINGTON TRUST, NATIONAL ASSOCIATION, as Subordination Agent

 
			
		
	By:	 	  

		 	Name:
		 	Title:

  

			
	WILMINGTON TRUST, NATIONAL ASSOCIATION, as Loan Trustee

 
			
		
	By:	 	  

		 	Name:
		 	Title:

 Signature Page 

  

					
		 		 	
Participation Agreement (Spirit 2017-1 EETC)

[Reg. No.]

 
			
	WILMINGTON TRUST, NATIONAL ASSOCIATION, in its individual capacity as set forth herein

 
			
		
	By:	 	  

		 	Name:
		 	Title:

 Signature Page 

  

					
		 		 	
Participation Agreement (Spirit 2017-1 EETC)

[Reg. No.]

 SCHEDULE I to 

PARTICIPATION AGREEMENT 
 EQUIPMENT
NOTES, 
 PURCHASERS AND ORIGINAL PRINCIPAL AMOUNTS 
  

									
	 Purchaser
	  	 Description of

Equipment Notes
	  	 Maturity
	  	Interest
Rate	  	 Original Principal
Amount3

	 Spirit Airlines

    Pass Through

    Trust 2017-1AA
	  	
Series 2017-1AA-[Reg. 
No.]
 Equipment Note[s]
	  	February 15, 2030	  	3.375%	  	$[•]
	 Spirit Airlines

    Pass Through

    Trust 2017-1A
	  	
Series 2017-1A-[Reg. 
No.]
 Equipment Note[s]
	  	February 15, 2030	  	3.650%	  	$[•]
	 Spirit Airlines

    Pass Through

    Trust 2017-1B
	  	
Series 2017-1B-[Reg. 
No.]
 Equipment Note[s]
	  	February 15, 2026	  	3.800%	  	$[•]

  

	3 	For each Series, to insert the amount set forth for such Series in Schedule III to the Note Purchase Agreement (including any adjustments if the Aircraft is an “Early Delivery Aircraft” (as defined in the Note
Purchase Agreement) to give effect to any Amortization Withdrawal (as defined in each Deposit Agreement) for the Aircraft). 

  

					
		 		 	
Participation Agreement (Spirit 2017-1 EETC)

[Reg. No.]

 SCHEDULE II to 

PARTICIPATION AGREEMENT 
 TRUST
SUPPLEMENTS 
 Trust Supplement No. 2017-1AA, dated as of the Issuance Date, between the Company and
the Pass Through Trustee in respect of Spirit Airlines Pass Through Trust 2017-1AA. 
 Trust
Supplement No. 2017-1A, dated as of the Issuance Date, between the Company and the Pass Through Trustee in respect of Spirit Airlines Pass Through Trust 2017-1A. 

Trust Supplement No. 2017-1B, dated as of the Issuance Date, between the Company and the Pass Through
Trustee in respect of Spirit Airlines Pass Through Trust 2017-1B. 

  

					
		 		 	
Participation Agreement (Spirit 2017-1 EETC)

[Reg. No.]

 EXHIBIT A-1 to 

PARTICIPATION AGREEMENT 
 FORM OF
OPINION OF 
 COUNSEL FOR THE COMPANY 

  

					
		 		 	
Participation Agreement (Spirit 2017-1 EETC)

[Reg. No.]

 EXHIBIT A-2 to 

PARTICIPATION AGREEMENT 
 FORM OF
OPINION OF 
 SPECIAL COUNSEL FOR THE COMPANY 

  

					
		 		 	
Participation Agreement (Spirit 2017-1 EETC)

[Reg. No.]

 EXHIBIT B to 

PARTICIPATION AGREEMENT 
 FORM OF
OPINION OF 
 SPECIAL COUNSEL FOR THE LOAN TRUSTEE, THE PASS THROUGH 

TRUSTEES, THE SUBORDINATION AGENT AND WTNA 

  

					
		 		 	
Participation Agreement (Spirit 2017-1 EETC)

[Reg. No.]

 EXHIBIT C to 

PARTICIPATION AGREEMENT 
 FORM OF
OPINION OF 
 SPECIAL FAA COUNSEL 

  

					
		 		 	
Participation Agreement (Spirit 2017-1 EETC)

[Reg. No.]

 EXHIBIT D to 

PARTICIPATION AGREEMENT 
 FORM OF
AIRFRAME WARRANTIES AGREEMENT 

  

					
		 		 	
Participation Agreement (Spirit 2017-1 EETC)

[Reg. No.]

 EXHIBIT E to 

PARTICIPATION AGREEMENT 
 FORM OF
OPINION OF SPECIAL DELAWARE COUNSEL AS TO UCC MATTERS 

  

					
		 		 	
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[Reg. No.]

 Annex A to 

Participation Agreement and 

Indenture and Security Agreement 

([REG. NO.]) 
 DEFINITIONS

 ([REG. NO.]) 

“Additional Series” or “Additional Series Equipment Notes” means Equipment Notes issued under the Indenture
and designated as a Series (other than “Series AA”, “Series A” or “Series B”) thereunder in the principal amounts and maturities and bearing interest as specified in Schedule I to the Indenture amended at the time of
original issuance of such Additional Series under the heading for such Series. 
 “Additional Series Pass Through
Certificates” means the pass through certificates issued by any Additional Series Pass Through Trust. 
 “Additional Series
Pass Through Trust” means a grantor trust created to facilitate the issuance and sale of pass through certificates in connection with the issuance of any Additional Series Equipment Notes. 

“Additional Series Pass Through Trust Agreement” means a Trust Supplement entered into in connection with the creation of an
Additional Series Pass Through Trust, together with the Basic Pass Through Trust Agreement, as the same may be amended, supplemented or otherwise modified from time to time in accordance with its terms. 

“Additional Series Pass Through Trustee” means, with respect to any Additional Series Pass Through Trust, the trustee under
the Additional Series Pass Through Trust Agreement for such Additional Series Pass Through Trust. 
 “Affiliate” means with
respect to any Person, any other Person directly or indirectly controlling, controlled by or under common control with such Person. For the purposes of this definition, “control” (including “controlled by” and “under common
control with”) shall mean the power, directly or indirectly, to direct or cause the direction of the management and policies of such Person whether through the ownership of voting securities or by contract or otherwise. In no event shall WTNA
be deemed to be an Affiliate of the Loan Trustee or vice versa. 
 “After-Tax
Basis” means that indemnity and compensation payments required to be made on such basis will be supplemented by the Person paying the base amount by that amount which, when added to such base amount, and after deduction of all Federal,
state, local and foreign Taxes required to be paid by or on behalf of the payee with respect of the receipt or realization of the base amount and any such supplemental amounts, and after consideration of any current tax savings of such payee
resulting by way of any deduction, credit or other tax benefit actually and currently realized that is attributable to such base amount or Tax, shall net such payee the full amount of such base amount. 

“Agreement” and “Participation Agreement” mean that certain Participation Agreement ([REG. NO.]), dated on
or before the Closing Date, among the Company, WTNA, the Pass 

  

					
		 		 	
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[Reg. No.]

 
Through Trustee under each Pass Through Trust Agreement, the Subordination Agent and the Loan Trustee, as the same may be amended, supplemented or otherwise modified from time to time in
accordance with its terms. 
 “Aircraft” means the Airframe (or any Substitute Airframe or Replacement Airframe substituted
therefor pursuant to Section 7.04 or Section 7.05, respectively, of the Indenture) together with the two Engines described in the Indenture Supplement originally executed and delivered under the Indenture (or any Replacement Engine that
may from time to time be substituted for any of such Engines pursuant to Section 7.04 or Section 7.05 of the Indenture), whether or not any of such initial or substituted Engines is from time to time installed on such Airframe or installed
on any other airframe or on any other aircraft. The term “Aircraft” includes any Replacement Aircraft. 
 “Aircraft
Protocol” means the official English language text of the Protocol to the Convention on International Interests in Mobile Equipment on Matters Specific to Aircraft Equipment, adopted on November 16, 2001, at a diplomatic conference in
Cape Town, South Africa, and all amendments, supplements, and revisions thereto (and from and after the effective date of the Cape Town Treaty in the relevant country, means when referring to the Aircraft Protocol with respect to that country, the
Aircraft Protocol as in effect in such country, unless otherwise indicated). 
 “Airframe” means (a) the Airbus
[Model] (generic model [Generic Model]) aircraft (except (i) the Engines or engines from time to time installed thereon and any and all Parts related to such Engine or engines and (ii) Excluded Equipment) specified on Annex A
to the Indenture Supplement originally executed and delivered under the Indenture and (b) any and all related Parts. The term “Airframe” includes any Substitute Airframe or Replacement Airframe that is substituted for the
Airframe pursuant to Section 7.04 or Section 7.05, respectively, of the Indenture. At such time as any Substitute Airframe or Replacement Airframe is so substituted and the Airframe for which such substitution is made is released from the
Lien of the Indenture, such replaced Airframe shall cease to be an Airframe under the Indenture. 
 “Airframe Warranties
Agreement” means the Airframe Warranties Agreement, dated the Closing Date, substantially in the form of Exhibit D to the Participation Agreement, executed by the Manufacturer and as supplemented, modified and amended by the Initial Notice,
substantially in the form of Schedule 3 thereunder, dated the Closing Date and executed by the Company as “Initial Entitled Party” and the Loan Trustee as “Initial Controlling Party” and acknowledged and agreed by the
Manufacturer. 
 “Appraisers” has the meaning set forth in the Intercreditor Agreement. 

“Bankruptcy Code” means the United States Bankruptcy Code, 11 United States Code §§101 et seq., as amended from
time to time, or any successor statutes thereto. 
 “Basic Pass Through Trust Agreement” means that certain Pass Through
Trust Agreement, dated as of August 11, 2015, between the Company and WTNA, as the same may be 

  

					
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amended, supplemented or otherwise modified from time to time in accordance with its terms (but does not include any Trust Supplement). 

“Business Day” means any day other than a Saturday, a Sunday or a day on which commercial banks are required or authorized to
close in New York, New York, Miramar, Florida, Wilmington, Delaware or, if different from the foregoing, the city and state in which the Loan Trustee, any Pass Through Trustee or the Subordination Agent maintains its Corporate Trust Office or
receives and disburses funds. 
 “Cape Town Convention” means the official English language text of the Convention on
International Interests in Mobile Equipment, adopted on November 16, 2001, at a diplomatic conference in Cape Town, South Africa, and all amendments, supplements, and revisions thereto (and from and after the effective date of the Cape Town
Treaty in the relevant country, means when referring to the Cape Town Convention with respect to that country, the Cape Town Convention as in effect in such country, unless otherwise indicated). 

“Cape Town Treaty” means, collectively, the official English language text of (a) the Convention on International
Interests in Mobile Equipment, and (b) the Protocol to the Convention on International Interests in Mobile Equipment on Matters Specific to Aircraft Equipment, in each case adopted on November 16, 2001, at a diplomatic conference in
Cape Town, South Africa, and from and after the effective date of the Cape Town Treaty in the relevant country, means when referring to the Cape Town Treaty with respect to that country, the Cape Town Treaty as in effect in such country, unless
otherwise indicated, and (c) all rules and regulations adopted pursuant thereto and, in the case of each of the foregoing described in clauses (a) through (c), all amendments, supplements, and revisions thereto. 

“Certificated Air Carrier” means a Citizen of the United States holding 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 or that otherwise is certified or registered to the extent required
to fall within the purview of Section 1110. 
 “Citizen of the United States” has the meaning specified for such term
in Section 40102(a)(15) of Title 49 of the United States Code or any similar legislation of the United States enacted in substitution or replacement therefor. 

“Claim” has the meaning specified in Section 4.02(a) of the Participation Agreement. 

“Class A Certificates” means Pass Through Certificates issued by the Class A Pass Through Trust. 

“Class A Liquidity Facility” has the meaning set forth in the Intercreditor Agreement. 

“Class A Liquidity Provider” has the meaning set forth in the Intercreditor Agreement. 

  

					
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 “Class A Pass Through Trust” means the Spirit Airlines Pass
Through Trust 2017-1A created pursuant to the Basic Pass Through Trust Agreement, as supplemented by Trust Supplement No. 2017-1A, dated as of the Issuance Date, between
the Company and WTNA, as Class A Trustee. 
 “Class A Trustee” means the trustee for the
Class A Pass Through Trust. 
 “Class AA Certificates” means Pass Through Certificates issued by
the Class AA Pass Through Trust. 
 “Class AA Liquidity Facility” has the meaning set forth in the
Intercreditor Agreement. 
 “Class AA Liquidity Provider” has the meaning set forth in the Intercreditor
Agreement. 
 “Class AA Pass Through Trust” means the Spirit Airlines Pass Through Trust 2017-1AA created pursuant to the Basic Pass Through Trust Agreement, as supplemented by Trust Supplement No. 2017-1AA, dated as of the Issuance Date, between the Company and
WTNA, as Class AA Trustee. 
 “Class AA Trustee” means the trustee for the Class AA Pass
Through Trust. 
 “Class B Certificates” means Pass Through Certificates issued by the Class B Pass
Through Trust. 
 “Class B Liquidity Facility” has the meaning set forth in the Intercreditor Agreement.

 “Class B Liquidity Provider” has the meaning set forth in the Intercreditor Agreement. 

“Class B Pass Through Trust” means the Spirit Airlines Pass Through Trust
2017-1B created pursuant to the Basic Pass Through Trust Agreement, as supplemented by Trust Supplement No. 2017-1B, dated as of the Issuance Date, between the Company
and WTNA, as Class B Trustee. 
 “Class B Trustee” means the trustee for the Class B Pass
Through Trust. 
 “Closing” has the meaning specified in Section 2.03 of the Participation Agreement. 

“Closing Date” means the date of the closing of the transaction contemplated by the Operative Documents. 

“Code” means the Internal Revenue Code of 1986, as amended from time to time. 

“Collateral” has the meaning specified in the granting clause of the Indenture. 

“Company” means Spirit Airlines, Inc., and its successors and permitted assigns. 

  

					
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 “Compulsory Acquisition” means requisition of title or other compulsory
acquisition, capture, seizure, deprivation, confiscation or detention for any reason of the Aircraft, the Airframe or any Engine by any government that results in the loss of title or use of the Aircraft, the Airframe or any Engine by the Company
(or any Permitted Lessee) for a period in excess of 180 consecutive days, but shall exclude requisition for use or hire not involving requisition of title. 

“Confidential Information” has the meaning specified in Section 10.16 of the Indenture. 

“Controlling Party” has the meaning specified in Section 2.06 of the Intercreditor Agreement. 

“Corporate Trust Office” has the meaning specified in Section 1.01 of the Intercreditor Agreement. 

“CRAF Program” means the Civil Reserve Air Fleet Program authorized under 10 U.S.C. Section 9511 et seq. or any similar
or substitute program under the laws of the United States. 
 “Debt Rate” means (i) with respect to any Series
of Equipment Notes, the rate per annum specified for the applicable Series as such in Schedule I to the Indenture (as amended, in the case of any Additional Series, new Series A Equipment Notes, new Series B Equipment Notes or new Additional Series
issued pursuant to Section 2.02 of the Indenture, at the time of issuance of such Series), and (ii) for any other purpose, with respect to any period, the weighted average interest rate per annum during such period borne by the
outstanding Equipment Notes, excluding in each case any interest payable at the Past Due Rate. 
 “Defaulted Operative
Indenture” means any Operative Indenture (the terms “Event of Default”, “Equipment Notes” and “Payment Default” used in this definition have the meanings specified therefor in such Operative Indenture) with
respect to which (i) a Payment Default has occurred and is continuing or an Event of Default described in Section 4.01(a) of such Operative Indenture has occurred and is continuing or (ii) an Event of Default other than
an Event of Default described in Section 4.01(a) of such Operative Indenture has occurred and is continuing and, in any such case, either (x) the Equipment Notes issued thereunder have been accelerated and such acceleration has not
been rescinded and annulled in accordance therewith or (y) the loan trustee under such Operative Indenture has given the Company a notice of its intention to exercise one or more of the remedies specified in Section 4.02(a) of such
Operative Indenture; provided that in the event of a bankruptcy proceeding under the Bankruptcy Code under which the Company is a debtor, if and so long as the trustee or the debtor agrees to perform and performs all obligations of the
Company under such Operative Indenture and the Equipment Notes issued thereunder in accordance with Section 1110(a)(2) of the Bankruptcy Code and cures defaults under such Operative Indentures and Equipment Notes to the extent required by
Section 1110(a)(2) of the Bankruptcy Code, such Operative Indenture shall not be a Defaulted Operative Indenture. 

“Department of Transportation” means the United States Department of Transportation and any agency or instrumentality of the
United States government succeeding to its functions. 

  

					
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[Reg. No.]

 “Deposit Agreement” means, subject to Section 5(f) of the Note Purchase
Agreement, each of the three Deposit Agreements, dated as of the Issuance Date, between the Escrow Agent and the Depositary, which relate to the Class AA Pass Through Trust, Class A Pass Through Trust or the Class B Pass Through
Trust, respectively; provided that, for purposes of any obligation of the Company, no amendment, modification or supplement to, or substitution or replacement of, any such Deposit Agreement shall be effective unless consented to by the
Company. 
 “Depositary” means, subject to Section 5(f) of the Note Purchase Agreement, Citibank, N.A., as Depositary
under each Deposit Agreement. 
 “Direction” has the meaning specified in Section 2.16 of the Indenture. 

“Dollars” and “$” mean the lawful currency of the United States. 

“Eligible Account” means an account established by and with an Eligible Institution at the request of the Loan Trustee, which
institution agrees, for all purposes of the NY UCC including Article 8 thereof, that (a) such account shall be a “securities account” (as defined in Section 8-501(a) of the NY UCC),
(b) such institution is a “securities intermediary” (as defined in Section 8-102(a)(14) of the NY UCC), (c) all property (other than cash) credited to such account shall be treated
as a “financial asset” (as defined in Section 8-102(a)(9) of the NY UCC), (d) the Loan Trustee shall be the “entitlement holder” (as defined in
Section 8-102(a)(7) of the NY UCC) in respect of such account, (e) it will comply with all entitlement orders issued by the Loan Trustee to the exclusion of the Company, (f) it
will waive or subordinate in favor of the Loan Trustee all claims (including, without limitation, claims by way of security interest, lien or right of set-off or right of recoupment), and (g) the
“securities intermediary jurisdiction” (under Section 8-110(e) of the NY UCC) shall be the State of New York. 

“Eligible Institution” means the corporate trust department of (a) WTNA or any other Person that becomes a
successor Loan Trustee under the Indenture, in each case, acting solely in its capacity as a “securities intermediary” (as defined in Section 8-102(a)(14) of the NY UCC), or (b) a
depository institution organized under the laws of the United States of America or any one of the states thereof or the District of Columbia (or any U.S. branch of a foreign bank), which has a Long-Term Rating (or, if a Long-Term Rating is not
available, its Short-Term Rating equivalent) from either Fitch or S&P of at least A-. 

“Engine” means (a) each of the two [Engine Manufacturer and Model] engines (generic manufacturer and model
[Generic Manufacturer and Model]) listed by manufacturer’s serial number and further described on Annex A to the Indenture Supplement originally executed and delivered under the Indenture, whether or not from time to time installed on the
Airframe or installed on any other airframe or on any other aircraft and (b) any Replacement Engine substituted for an Engine pursuant to Section 7.04 or 7.05 of the Indenture; together in each case with any and all related Parts
but excluding Excluded Equipment. At such time as a Replacement Engine is so substituted and the Engine for which substitution is made is released 

  

					
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[Reg. No.]

 
from the Lien of the Indenture, such replaced Engine shall cease to be an Engine under the Indenture. 

“Equipment Note” means and includes any equipment notes issued under the Indenture in the form specified in Section 2.01
thereof (as such form may be varied pursuant to the terms of the Indenture) and any Equipment Note issued in exchange therefor or replacement thereof pursuant to Section 2.07 or 2.08 of the Indenture. 

“Equipment Note Register” has the meaning specified in Section 2.07 of the Indenture. 

“Equipment Note Registrar” has the meaning specified in Section 2.07 of the Indenture. 

“ERISA” means the Employee Retirement Income Security Act of 1974, as amended from time to time, and the regulations
promulgated and rulings issued thereunder. Section references to ERISA are to ERISA as in effect at the date of the Participation Agreement and any subsequent provisions of ERISA amendatory thereof, supplemental thereto or substituted therefor. 

“Escrow Agent” means Wilmington Trust Company, a Delaware trust company, as escrow agent under each Escrow Agreement, or any
successor agent thereto. 
 “Escrow Agreement” means each of the three Escrow and Paying Agent Agreements, dated as of the
Issuance Date, among the Escrow Agent, the Paying Agent, the Underwriters and the applicable Pass Through Trustee, which relate to the Class AA Pass Through Trust, the Class A Pass Through Trust or the Class B Pass Through Trust,
respectively; provided that, for purposes of any obligation of the Company, no amendment, modification or supplement to, or substitution or replacement of, any such Escrow Agreement shall be effective unless consented to by the Company. 

“Event of Default” has the meaning specified in Section 4.01 of the Indenture. 

“Event of Loss” means, with respect to the Aircraft, Airframe or any Engine, any of the following events with respect to such
property: 
 (a) the loss of such property or of the use thereof due to destruction, damage beyond repair or rendition of such property
permanently unfit for normal use for any reason whatsoever; 
 (b) any damage to such property which results in an insurance settlement with
respect to such property on the basis of a total loss, a compromised total loss or a constructive total loss; 
 (c) the theft, hijacking or
disappearance of such property for a period in excess of 180 consecutive days; 
 (d) the requisition for use or hire of such property by
any government (other than a requisition for use or hire by a Government or the government of the country of registry of the 

  

					
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[Reg. No.]

 
Aircraft) that results in the loss of possession of such property by the Company (or any Permitted Lessee) for a period in excess of 12 consecutive months; 

(e) the operation or location of the Aircraft, while under requisition for use by any government, in any area excluded from coverage by any
insurance policy in effect with respect to the Aircraft required by the terms of Section 7.06 of the Indenture, unless the Company shall have obtained indemnity or insurance in lieu thereof from such government; 

(f) any Compulsory Acquisition; 

(g) as a result of any law, rule, regulation, order or other action by the FAA or other government of the country of registry, the use of the
Aircraft or Airframe in the normal business of air transportation is prohibited by virtue of a condition affecting all aircraft of the same type for a period of 18 consecutive months, unless the Company is diligently carrying forward all steps that
are necessary or desirable to permit the normal use of the Aircraft or Airframe or, in any event, if such use is prohibited for a period of three consecutive years; and 

(h) with respect to an Engine only, any divestiture of title to or interest in an Engine or any event with respect to an Engine that is deemed
to be an Event of Loss with respect to such Engine pursuant to Section 7.02(a)(vii) of the Indenture. 
 An Event of Loss with respect
to the Aircraft shall be deemed to have occurred if an Event of Loss occurs with respect to the Airframe unless the Company elects to substitute a Replacement Airframe pursuant to Section 7.05(a)(i) of the Indenture. 

“Excluded Equipment” means (i) defibrillators, enhanced emergency medical kits and other medical equipment,
(ii) airphones and other components or systems installed on or affixed to the Airframe that are used to provide individual telecommunications or electronic entertainment to passengers aboard the Aircraft, (iii) galley carts,
beverage carts, waste containers, liquor kits, food tray carriers, ice containers, oven inserts, galley inserts, and other branded passenger convenience or service items, (iv) any items, equipment or systems leased by the Company or any
Permitted Lessee (other than items, equipment, or systems that are leased from the Company pursuant to the applicable Lease) or owned by the Company or any Permitted Lessee subject to a conditional sales agreement or a security interest (other than
the security interest granted under the Indenture), and (v) cargo containers. 
 “FAA” means the United States
Federal Aviation Administration and any agency or instrumentality of the United States government succeeding to its functions. 

“FAA Bill of Sale” means the bill of sale for the Aircraft on AC Form 8050-2 executed
by Manufacturer or an affiliate of Manufacturer in favor of the Company and recorded with the FAA. 
 “Federal Funds Rate”
means a fluctuating interest rate per annum in effect from time to time, which rate per annum shall at all times be equal to the weighted average of the rates on overnight Federal funds transactions with members of the Federal Reserve System
arranged by 

  

					
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[Reg. No.]

 
Federal funds brokers, as published for such day (or, if such day is not a Business Day, for the next preceding Business Day) by the Federal Reserve Bank of New York, or if such rate is not so
published for any day that is a Business Day, the average of the quotations for such day for such transactions received by WTNA from three Federal funds brokers of recognized standing selected by it. 

“Fitch” means Fitch Ratings, Inc. 

“Government” means the government of any of Canada, France, Germany, Japan, The Netherlands, Sweden, Switzerland, the United
Kingdom or the United States and any instrumentality or agency thereof. 
 “Indemnitee” has the meaning specified in
Section 4.02(b) of the Participation Agreement. 
 “Indenture” means that certain Indenture and Security Agreement
([REG. NO.]), dated as of the Closing Date, between the Company and the Loan Trustee, as the same may be amended, supplemented or otherwise modified from time to time in accordance with its terms, including supplementation by an Indenture Supplement
pursuant to the Indenture. 
 “Indenture Indemnitee” means (i) the Loan Trustee, (ii) WTNA,
(iii) each separate or successor or additional trustee appointed pursuant to Section 8.02 of the Indenture, (iv) so long as it holds any Equipment Notes as agent and trustee of any Pass Through Trustee, the Subordination
Agent, (v) each Liquidity Provider, (vi) so long as it is the holder of any Equipment Notes, each Pass Through Trustee, (vii) the Paying Agent, (viii) the Escrow Agent, and (ix) any of
their respective successors and permitted assigns in such capacities, directors, officers, employees, agents and servants. No holder of a Pass Through Certificate in its capacity as such shall be an Indenture Indemnitee. 

“Indenture Supplement” means a supplement to the Indenture, substantially in the form of Exhibit A to the Indenture, which
particularly describes the Aircraft, and any Substitute Airframe, Replacement Airframe and/or Replacement Engine, included in the property subject to the Lien of the Indenture. 

“Intercreditor Agreement” means that certain Intercreditor Agreement, dated as of the Issuance Date, among the Pass Through
Trustees, the Liquidity Providers and the Subordination Agent, as the same may be amended, supplemented or otherwise modified from time to time in accordance with its terms; provided that, for purposes of any obligations of the Company, no
amendment, modification or supplement to, or substitution or replacement of, such Intercreditor Agreement shall be effective unless consented to by the Company. 

“Interests” has the meaning specified in Section 7.06(a) of the Indenture. 

“International Interest” has the meaning ascribed to the defined term “international interest” under the Cape Town
Treaty. 

  

					
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 “International Registry” means the international registry established pursuant
to the Cape Town Treaty. 
 “Issuance Date” means November 28, 2017. 

“Lease” means any lease permitted by the terms of Section 7.02(a) of the Indenture. 

“Lien” means any mortgage, pledge, lien, encumbrance, lease, sublease, sub-sublease
or security interest. 
 “Liquidity Facilities” means, collectively, the Class AA Liquidity Facility, the Class A
Liquidity Facility and the Class B Liquidity Facility. 
 “Liquidity Providers” means, collectively, the Class AA
Liquidity Provider, the Class A Liquidity Provider and the Class B Liquidity Provider. 
 “Loan Amount” has the
meaning specified in Section 7.06(b) of the Indenture. 
 “Loan Trustee” has the meaning specified in the introductory
paragraph of the Indenture. 
 “Loan Trustee Liens” means any Lien attributable to WTNA or the Loan Trustee with respect to
the Aircraft, any interest therein or any other portion of the Collateral arising as a result of (i) claims against WTNA or the Loan Trustee not related to its interest in the Aircraft or the administration of the Collateral pursuant to
the Indenture, (ii) acts of WTNA or the Loan Trustee not permitted by, or the failure of WTNA or the Loan Trustee to take any action required by, the Operative Documents or the Pass Through Documents, (iii) claims against
WTNA or the Loan Trustee relating to Taxes or Claims that are excluded from the indemnification provided by Section 4.02 of the Participation Agreement pursuant to said Section 4.02 or (iv) claims against WTNA or the Loan
Trustee arising out of the transfer by any such party of all or any portion of its interest in the Aircraft, the Collateral, the Operative Documents or the Pass Through Documents, except while an Event of Default is continuing and prior to the time
that the Loan Trustee has received all amounts due to it pursuant to the Indenture. 
 “Long-Term Rating” has the meaning
specified in the Intercreditor Agreement. 
 “Loss Payment Date” has the meaning specified in Section 7.05(a) of the
Indenture. 
 “Majority in Interest of Noteholders” means, as of a particular date of determination and subject to
Section 2.16 of the Indenture, the holders of at least a majority in aggregate unpaid principal amount of all Equipment Notes outstanding as of such date (excluding any Equipment Notes held by the Company or any Affiliate thereof, it being
understood that a Pass Through Trustee shall be considered an Affiliate of the Company as long as more than 50% in the aggregate face amount of Pass Through Certificates issued by the corresponding Pass Through Trust are held and able to be voted by
the Company or an Affiliate of the Company or a Pass Through Trustee is otherwise under the control of the Company or such Affiliate of the Company (unless all Equipment Notes then outstanding are held by the Company or any

  

					
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Affiliate thereof, including the Pass Through Trustees which are considered Affiliates of the Company pursuant hereto); provided that for the purposes of directing any action or casting
any vote or giving any consent, waiver or instruction hereunder, any Noteholder of an Equipment Note or Equipment Notes may allocate, in such Noteholder’s sole discretion, any fractional portion of the principal amount of such Equipment Note or
Equipment Notes in favor of or in opposition to any such action, vote, consent, waiver or instruction. 
 “Make-Whole
Amount” means, with respect to any Equipment Note, the amount (as determined by an independent investment banker selected by the Company (and, following the occurrence and during the continuance of an Event of Default, reasonably acceptable
to the Loan Trustee)), if any, by which (i) the present value of the remaining scheduled payments of principal and interest from the redemption date to maturity of such Equipment Note computed by discounting each such payment on a
semiannual basis from its respective Payment Date (assuming a 360-day year of twelve 30 day months) using a discount rate equal to the Treasury Yield plus the Make-Whole Spread exceeds (ii) the
outstanding principal amount of such Equipment Note plus accrued but unpaid interest thereon to the date of redemption. For purposes of determining the Make-Whole Amount, “Treasury Yield” means, at the date of determination, the
interest rate (expressed as a semiannual equivalent and as a decimal rounded to the number of decimal places as appears in the Debt Rate of such Equipment Note and, in the case of United States Treasury bills, converted to a bond equivalent yield)
determined to be the per annum rate equal to the semiannual yield to maturity for United States Treasury securities maturing on the Average Life Date and trading in the public securities market either as determined by interpolation between the most
recent weekly average constant maturity, non-inflation-indexed series yield to maturity for two series of United States Treasury securities, trading in the public securities markets, (A) one
maturing as close as possible to, but earlier than, the Average Life Date and (B) the other maturing as close as possible to, but later than, the Average Life Date, in each case as reported in the most recent H.15(519) or, if a weekly
average constant maturity, non-inflation indexed series yield to maturity for United States Treasury securities maturing on the Average Life Date is reported in the most recent H.15(519), such weekly average
yield to maturity as reported in such H.15(519). “H.15(519)” means the weekly statistical release designated as such, or any successor publication, published by the Board of Governors of the Federal Reserve System. The date of
determination of a Make-Whole Amount shall be the third Business Day prior to the applicable redemption date and the “most recent H.15(519)” means the latest H.15(519) published prior to the close of business on the third Business
Day prior to the applicable redemption date. “Average Life Date” means, for each Equipment Note to be redeemed, the date which follows the redemption date by a period equal to the Remaining Weighted Average Life at the redemption
date of such Equipment Note. “Remaining Weighted Average Life” of an Equipment Note, at the redemption date of such Equipment Note, means the number of days equal to the quotient obtained by dividing: (i) the sum of the
products obtained by multiplying (A) the amount of each then remaining installment of principal, including the payment due on the maturity date of such Equipment Note, by (B) the number of days from and including the
redemption date to but excluding the scheduled Payment Date of such principal installment by (ii) the then unpaid principal amount of such Equipment Note. 

  

					
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 “Make-Whole Spread” means, with respect to any Series of Equipment Notes, the
percentage specified for the applicable Series as such in Schedule I to the Indenture (as amended, in the case of any Additional Series, new Series A Equipment Notes, new Series B Equipment Notes or new Additional Series issued pursuant to
Section 2.02 of the Indenture, at the time of issuance of such Series). 
 “Manufacturer” means, as the context may
require, Airbus S.A.S., a société par actions simplifiée organized and existing under the laws of the Republic of France, or Airbus Americas, Inc., a Delaware corporation and, in each case, its successors and assigns.

 “MCMV” has the meaning specified in Section 7.04(e) of the Indenture. 

“Noteholder” means any Person in whose name an Equipment Note is registered on the Equipment Note Register (including, for so
long as it is the registered holder of any Equipment Notes, the Subordination Agent on behalf of the Pass Through Trustees pursuant to the provisions of the Intercreditor Agreement). 

“Noteholder Liens” means any Lien attributable to any Noteholder on or against the Aircraft, any interest therein or any
other portion of the Collateral, arising out of any claim against such Noteholder that is not related to the Operative Documents or Pass Through Documents, or out of any act or omission of such Noteholder that is not related to the transactions
contemplated by, or that constitutes a breach by such Noteholder of its obligations under, the Operative Documents or the Pass Through Documents. 

“Note Purchase Agreement” means the Note Purchase Agreement, dated as of the Issuance Date, among the Company, the
Subordination Agent, the Escrow Agent, the Paying Agent and the Pass Through Trustees providing for, among other things, the issuance and sale of certain equipment notes, as the same may be amended, supplemented or otherwise modified from time to
time in accordance with its terms. 
 “NY UCC” means UCC as in effect in the State of New York. 

“Operative Documents” means, collectively, the Participation Agreement, the Indenture, each Indenture Supplement, the
Airframe Warranties Agreement and the Equipment Notes. 
 “Operative Indentures” means, as of any date, each
“Indenture” (as such term is defined in the Note Purchase Agreement), including the Indenture, whether or not any other “Indenture” shall have been entered into before or after the date of the Indenture, but only if as of such
date all “Equipment Notes” (as defined in each such “Indenture”) are held by the “Subordination Agent” under the “Intercreditor Agreement”, as such terms are defined in each such “Indenture”. 

“Other Party Liens” means any Lien attributable to any Pass Through Trustee (other than in its capacity as Noteholder), the
Subordination Agent (other than in its capacity as Noteholder) or any Liquidity Provider on or against the Aircraft, any interest therein, or any other portion of the Collateral arising out of any claim against such party that is not related to the
Operative Documents or Pass Through Documents, or out of any act or omission of such party that is not 

  

					
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related to the transactions contemplated by, or that constitutes a breach by such party of its obligations under, the Operative Documents or the Pass Through Documents. 

“Participation Agreement” has the meaning set forth under the definition of “Agreement”. 

“Parts” means any and all appliances, parts, instruments, appurtenances, accessories, furnishings and other equipment of
whatever nature (other than (a) complete Engines or engines and (b) Excluded Equipment), so long as the same are incorporated or installed in or attached to the Airframe or any Engine or so long as the same are subject to the
Lien of the Indenture in accordance with the terms of Section 7.04 thereof after removal from the Airframe or any Engine. 

“Pass Through Certificates” means the pass through certificates issued by any Pass Through Trust (and any other pass through
certificates for which such pass through certificates may be exchanged). 
 “Pass Through Documents” means each Pass
Through Trust Agreement, the Note Purchase Agreement, each Escrow Agreement, each Deposit Agreement, the Intercreditor Agreement and each Liquidity Facility. 

“Pass Through Trust” means each of the three separate grantor trusts that have been created pursuant to the Pass Through
Trust Agreements to facilitate certain of the transactions contemplated by the Operative Documents. 
 “Pass Through Trust
Agreement” means each of the three separate Trust Supplements relating to the Pass Through Trusts, together in each case with the Basic Pass Through Trust Agreement, as the same may be amended, supplemented or otherwise modified from time
to time in accordance with its terms. 
 “Pass Through Trustee” means the trustee under each Pass Through Trust Agreement,
together with any successor in interest and any successor or other trustee appointed as provided in such Pass Through Trust Agreement. 

“Past Due Rate” means the lesser of (a) with respect to (i) any payment made to a Noteholder under
any Series of Equipment Notes, the Debt Rate then applicable to such Series plus 1% and (ii) any other payment made under any Operative Document to any other Person, the Debt Rate plus 1% (computed on the basis of a year of 360 days
comprised of twelve 30-day months) and (b) the maximum rate permitted by applicable law. 

“Paying Agent” means WTNA, as paying agent under each Escrow Agreement, and any successor agent thereto. 

  

					
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 “Payment Date” means, for any Equipment Note, each February 15 and
August 15, [commencing with August 15, 2018]4[commencing with February 15, 2019].5 

“Payment Default” means the occurrence of an event that would give rise to an Event of Default under Section 4.01(a) of
the Indenture upon the giving of notice or the passing of time or both. 
 “Permitted Investments” means each of
(a) direct obligations of the United States and agencies thereof; (b) obligations fully guaranteed by the United States; (c) certificates of deposit issued by, or bankers’ acceptances of, or time deposits
with, any bank, trust company or national banking association incorporated or doing business under the laws of the United States or one of the states thereof having combined capital and surplus and retained earnings of at least $100,000,000 and
having a Long-Term Rating of A, its equivalent or better issued by S&P and, if available, Fitch (or, if neither such organization then rates such institutions, by any nationally recognized rating organization in the United States); (d)
commercial paper of any holding company of a bank, trust company or national banking association described in clause (c); (e) commercial paper of companies having a Short-Term Rating assigned to such commercial paper by S&P and, if
available, Fitch (or, if neither such organization then rates such commercial paper, by any nationally recognized rating organization in the United States) equal to either of the two highest ratings assigned by such organization;
(f) Dollar-denominated certificates of deposit issued by, or time deposits with, the European subsidiaries of (i) any bank, trust company or national banking association described in clause (c), or (ii) any other
bank or financial institution described in clause (g), (h) or (j) below; (g) United States-issued Yankee certificates of deposit issued by, or bankers’ acceptances of, or commercial paper issued by, any bank having combined capital
and surplus and retained earnings of at least $100,000,000 and headquartered in Canada, Japan, the United Kingdom, France, Germany, Switzerland or The Netherlands and having a Long-Term Rating of A, its equivalent or better issued by S&P and, if
available, Fitch (or, if neither such organization then rates such institutions, by any nationally recognized rating organization in the United States); (h) Dollar-denominated time deposits with any Canadian bank having a combined capital and
surplus and retained earnings of at least $100,000,000 and having a Long-Term Rating of A, its equivalent or better issued by S&P and, if available, Fitch (or, if neither such organization then rates such institutions, by any nationally
recognized rating organization in the United States); (i) Canadian Treasury Bills fully hedged to Dollars; (j) repurchase agreements with any financial institution having combined capital and surplus and retained earnings of at
least $100,000,000 collateralized by transfer of possession of any of the obligations described in clauses (a) through (i) above; (k) bonds, notes or other obligations of any state of the United States, or any political subdivision
of any state, or any agencies or other instrumentalities of any such state, including, but not limited to, industrial development bonds, pollution control revenue bonds, public power bonds, housing bonds, other revenue bonds or any general
obligation bonds, that, at the time of their purchase, such obligations have a Long-Term Rating of A, its equivalent or better issued by S&P and, if available, Fitch (or, if neither such 

 

	4 	Insert for Equipment Notes issued before August 15, 2018. 

	5 	 Insert for Equipment Notes issued after August 15, 2018.

  

					
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organization then rates such obligations, by any nationally recognized rating organization in the United States); (1) bonds or other debt instruments of any company, if such bonds or other
debt instruments, at the time of their purchase, have a Long-Term Rating of A, its equivalent or better issued by S&P and, if available, Fitch (or, if neither such organization then rates such obligations, by any nationally recognized rating
organization in the United States); (m) mortgage backed securities (i) guaranteed by the Federal National Mortgage Association, the Federal Home Loan Mortgage Corporation or the Government National Mortgage Association or having a
Long-Term Rating of AAA, its equivalent or better issued by S&P and, if available, Fitch (or, if neither such organization then rates such obligations, by any nationally recognized rating organization in the United States) or, if unrated, deemed
to be of a comparable quality by the Loan Trustee and (ii) having an average life not to exceed one year as determined by standard industry pricing practices presently in effect; (n) asset-backed securities having a Long-Term
Rating of A, its equivalent or better issued by S&P and, if available, Fitch (or, if neither such organization then rates such obligations, by any nationally recognized rating organization in the United States) or, if unrated, deemed to be of a
comparable quality by the Loan Trustee; and (o) such other investments approved in writing by the Loan Trustee; provided that the instruments described in the foregoing clauses shall have a maturity no later than the earlier of
(i) 365 days following the date of such investments and (ii) the earliest date when such investments may be required for distribution. The bank acting as Pass Through Trustee or Loan Trustee is hereby authorized, in making or disposing of any
investment described herein, to deal with itself (in its individual capacity) or with any one or more of its affiliates, whether it or such affiliate is acting as an agent of the Pass Through Trustee or the Loan Trustee or for any third person or
dealing as principal for its own account. 
 “Permitted Lessee” means any Person to whom the Company is permitted to lease
the Airframe or any Engine pursuant to Section 7.02(a) of the Indenture and is a party to a Lease. 
 “Permitted Lien”
has the meaning specified in Section 7.01 of the Indenture. 
 “Person” means any person, including 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. 

“Prospective International Interest” has the meaning ascribed to the defined term “prospective international
interest” under the Cape Town Treaty. 
 “Purchase Agreement” means the A320 Family Purchase Agreement, dated as of
May 5, 2004, between the Company and the Manufacturer, as the same may be amended, supplemented or otherwise modified from time to time in accordance with its terms. 

“Rating Agencies” has the meaning specified in the Intercreditor Agreement. 

“Related Additional Series Equipment Note” means, with respect to any particular Series of Additional Series Equipment Notes
and as of any date, an “Additional Series Equipment Note”, as defined in each Related Indenture, having the same designation (i.e., “Series C”, “Series D” or the like) as such Series of Additional Series
Equipment Notes, but only if as of 

  

					
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such date it is held by the “Subordination Agent” under the “Intercreditor Agreement”, as such terms are defined in such Related Indenture. 

“Related Equipment Note” means, as of any date, an “Equipment Note” as defined in each Related Indenture, but only
if as of such date it is held by the “Subordination Agent” under the “Intercreditor Agreement”, as such terms are defined in such Related Indenture. 

“Related Indemnitee Group” has the meaning specified in Section 4.02(b) of the Participation Agreement. 

“Related Indenture” means each Operative Indenture (other than the Indenture). 

“Related Indenture Bankruptcy Default” means any “Event of Default” under Section 4.01(f), (g), (h) or
(i) of any Related Indenture, determined without giving effect to any applicable grace period. 
 “Related Indenture Event of
Default” means any “Event of Default” under any Related Indenture. 
 “Related Indenture Indemnitee”
means each Related Noteholder. 
 “Related Loan Trustee” means the “Loan Trustee” as defined in each Related
Indenture. 
 “Related Make-Whole Amount” means the “Make-Whole Amount”, as defined in each Related Indenture.

 “Related Noteholder” means a registered holder of a Related Equipment Note. 

“Related Secured Obligations” means, as of any date, the outstanding principal amount of the Related Equipment Notes issued
under each Related Indenture, the accrued and unpaid interest (including, to the extent permitted by applicable law, post-petition interest and interest on any overdue amounts) due thereon in accordance with such Related Indenture as of such date,
the Related Make-Whole Amount, if any, with respect thereto due thereon in accordance with such Related Indenture as of such date, and any other amounts payable as of such date under the “Operative Documents” (as defined in each Related
Indenture). 
 “Related Series A Equipment Note” means, as of any date, a “Series A Equipment Note”, as defined
in each Related Indenture, but only if as of such date it is held by the “Subordination Agent” under the “Intercreditor Agreement”, as such terms are defined in such Related Indenture. 

“Related Series AA Equipment Note” means, as of any date, a “Series AA Equipment Note”, as defined in each Related
Indenture, but only if as of such date it is held by the “Subordination Agent” under the “Intercreditor Agreement”, as such terms are defined in such Related Indenture. 

  

					
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 “Related Series B Equipment Note” means, as of any date, a “Series B
Equipment Note”, as defined in each Related Indenture, but only if as of such date it is held by the “Subordination Agent” under the “Intercreditor Agreement”, as such terms are defined in such Related Indenture. 

“Replacement Aircraft” means the Aircraft of which a Replacement Airframe is part. 

“Replacement Airframe” means an Airbus [A320-200]6[A321-200]7 aircraft or a comparable or improved model of Manufacturer (except (a) Engines or
engines from time to time installed thereon and any and all Parts related to such Engine or engines and (b) Excluded Equipment), that shall have been made subject to the Lien of the Indenture pursuant to Section 7.05 thereof,
together with all Parts relating to such aircraft. 
 “Replacement Engine” means a [Engine Manufacturer and Model] engine
(or an engine of the same or another manufacturer of a comparable or an improved model and suitable for installation and use on the Airframe with the other Engine (or any other Replacement Engine being substituted simultaneously therewith)) that is
made subject to the Lien of the Indenture pursuant to Section 7.04 or Section 7.05 thereof, together with all Parts relating to such engine. 

“Replacement Liquidity Facility” has the meaning set forth in the Intercreditor Agreement. 

“Replacement Liquidity Provider” has the meaning set forth in the Intercreditor Agreement. 

“Responsible Officer” means, with respect to the Company, its Chairman of the Board, its President, its Chief Operating
Officer, any Executive Vice President, any Senior Vice President, the Chief Financial Officer, any Vice President, the Treasurer, the Assistant Treasurer, the Controller or the Secretary. 

“S&P” means Standard & Poor’s Ratings Services, a Standard & Poor’s Financial Services LLC
business. 
 “Section 1110” means Section 1110 of the Bankruptcy Code. 

“Secured Obligations” has the meaning specified in Section 2.06 of the Indenture. 

“Securities Account” has the meaning specified in Section 3.07 of the Indenture. 

“Securities Act” means the Securities Act of 1933, as amended from time to time. 

 

	6 	To be inserted for an A320-200 aircraft. 

	7 	To be inserted for an A321-200 aircraft. 

  

					
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 “Securities and Exchange Commission” means the United States Securities and
Exchange Commission and any agency or instrumentality of the United States government succeeding to its functions. 
 “Securities
Intermediary” has the meaning specified in Section 3.07 of the Indenture. 
 “Series” means any series of
Equipment Notes, including the Series AA Equipment Notes, Series A Equipment Notes, the
 Series B Equipment Notes or, if issued, any Additional Series Equipment Notes. 

“Series A” or “Series A Equipment Notes” means Equipment Notes issued and designated as “Series A
Equipment Notes” under the Indenture, in the original principal amount and maturities as specified in Schedule I to the Indenture under the heading “Series A Equipment Notes” and bearing interest at the Debt Rate for Series A
Equipment Notes specified in Schedule I to the Indenture. 
 “Series AA” or “Series AA Equipment Notes”
means Equipment Notes issued and designated as “Series AA Equipment Notes” under the Indenture, in the original principal amount and maturities as specified in Schedule I to the Indenture under the heading “Series AA Equipment
Notes” and bearing interest at the Debt Rate for Series AA Equipment Notes specified in Schedule I to the Indenture. 
 “Series
B” or “Series B Equipment Notes” means Equipment Notes issued and designated as “Series B Equipment Notes” under the Indenture, in the original principal amount and maturities as specified in Schedule I to the
Indenture under the heading “Series B Equipment Notes” and bearing interest at the Debt Rate for Series B Equipment Notes specified in Schedule I to the Indenture. 

“Short-Term Rating” has the meaning specified in the Intercreditor Agreement. 

“Similar Law” has the meaning specified in Section 4.02(d)(xi) of the Participation Agreement. 

“Specified Person” has the meaning specified in Section 7.06(a) of the Indenture. 

“Subordination Agent” has the meaning specified in the introductory paragraph of the Participation Agreement. 

“Substitute Airframe” means an Airbus [A320-200]8[A321-200]9aircraft or a comparable or improved model of Manufacturer (except (a) Engines or
engines from time to time installed thereon and any and all Parts related to such Engine or engines and (b) Excluded Equipment), 

 

	8 	To be inserted for an A320-200 aircraft. 

	9 	 To be inserted for an A321-200 aircraft.

  

					
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that shall have been made subject to the Lien of the Indenture pursuant to Section 7.04 thereof, together with all Parts relating to such aircraft. 

“Tax” and “Taxes” mean all governmental fees (including, without limitation, license, filing and
registration fees) and all taxes (including, without limitation, franchise, excise, stamp, value added, income, gross receipts, sales, use and property taxes), withholdings, assessments, levies, imposts, duties or charges, of any nature whatsoever,
together with any related penalties, fines, additions to tax or interest thereon imposed, withheld, levied or assessed by any country, taxing authority or governmental subdivision thereof or therein or by any international authority, including any
taxes imposed on any Person as a result of such Person being required to collect and pay over withholding taxes. 
 “Transportation
Code” means that portion of Title 49 of the United States Code comprising those provisions formerly referred to as the Federal Aviation Act of 1958, as amended, or any subsequent legislation that amends, supplements or supersedes such
provisions. 
 “Trust Indenture Act” means the Trust Indenture Act of 1939, as amended from time to time. 

“Trust Supplements” means those agreements supplemental to the Basic Pass Through Trust Agreement referred to in Schedule II
to the Participation Agreement. 
 “UCC” means the Uniform Commercial Code as in effect in any applicable jurisdiction.

 “Underwriter” means each of the underwriters identified as such in the Underwriting Agreement. 

“Underwriting Agreement” means that certain Underwriting Agreement, dated November 13, 2017, among the Company and
Morgan Stanley & Co. LLC and Citigroup Global Markets, Inc., as representatives of the Underwriters listed on Schedule I thereto, as the same may be amended, supplemented or otherwise modified from time to time in accordance with its terms.

 “United States” means the United States of America. 

“Warranty Bill of Sale” means the warranty (as to title) bill of sale covering the Aircraft executed by Manufacturer or an
affiliate of Manufacturer in favor of the Company and specifically referring to each Engine, as well as the Airframe, constituting a part of the Aircraft. 

“WTNA” has the meaning specified in the introductory paragraph of the Participation Agreement. 

  

					
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