Document:

EX-10.15(b)

 Exhibit 10.15(b) 

LETTER AGREEMENT NO. 1 
 As of
September 30, 2011 
 Republic Airways Holdings Inc. 

8909 Purdue Road 
 Suite 300 

Indianapolis, Indiana 46268 
  

	Re:	PAYMENTS 

 Dear Ladies and Gentlemen, 

REPUBLIC AIRWAYS HOLDINGS INC. (the “Buyer”) and AIRBUS S.A.S. (the “Seller”) have entered into an Airbus
A320 Family Purchase Agreement of even date herewith (the “Agreement”) which covers, among other matters, the sale by the Seller and the purchase by the Buyer of certain Aircraft, under the terms and conditions set forth in said
Agreement. The Buyer and the Seller have agreed to set forth in this Letter Agreement No. 1 (the “Letter Agreement”) certain additional terms and conditions regarding the sale of the Aircraft. Capitalized terms used
herein and not otherwise defined in this Letter Agreement have the meanings assigned thereto in the Agreement. The terms “herein,” “hereof” and “hereunder” and words of similar import refer to this Letter Agreement.

 Both parties agree that this Letter Agreement constitutes an integral, nonseverable part of said Agreement, that the provisions of said
Agreement are hereby incorporated herein by reference, and that this Letter Agreement is governed by the provisions of said Agreement, except that if the Agreement and this Letter Agreement have specific provisions which are inconsistent, the
specific provisions contained in this Letter Agreement will govern. 

  
 LA 1-1 

	1.	COMMITMENT FEE & PRIOR PREDELIVERY PAYMENTS 

 Clause 5.2 of the Agreement is
revised to read as follows: 
 QUOTE 
  

	 	5.2	 (i) The Seller acknowledges that it has received from the Buyer the sum of *****, which represents a fee of
***** for each Aircraft (the “Commitment Fee”) set forth in Clause 9.1 at the date hereof. 

(ii) The Seller acknowledges that it holds, in addition to the Commitment Fee set forth in Clause 5.2 (i) above, predelivery
payments received from Frontier Airlines under the purchase agreement between the Seller and Frontier Airlines dated as of March 10, 2000 in the total amount of ***** (the “Prior PDPs”). The Commitment Fee plus a pro-rata portion of the Prior PDPs which together equal ***** (the “Initial Payment”) will be credited without interest against the 1st
PDP (as defined Clause 5.3.2) due for each of the Aircraft firmly ordered as of the date hereof. 
  

	2.	PAYMENT TERMS 

  

	2.1	For A320 Aircraft, A319 Aircraft and A321 Aircraft: 

 Clauses 5.3.2 and 5.3.3 of the Agreement
are deleted in their entirety and replaced with the following quoted text: 
 QUOTE 

 

	 	5.3.2	 The Predelivery Payment Reference Price for an Aircraft to be delivered in calendar year T is determined in
accordance with the following formula: 

 ***** 

 

	 	5.3.3	For each Aircraft, Predelivery Payments will be paid to the Seller according to the following schedule: 

  

			
	 Payment Date
	  	Fixed Amount or Percentage of
applicable Predelivery Payment
Reference Price
		  	*****
	 *****
	  	*****
	 *****
	  	*****
	 *****
	  	*****

  

	*****	Confidential portions of the material have been omitted and filed separately with the Securities and Exchange Commission. 

LA 1-2 

					
	 *****
	  			
	 *****
	  	 	*****	 
	 *****
	  	 	*****	 
	 *****
	  	 	*****	 
	 *****
	  	 	*****	 
		  	  
	  
	 
	 Total payment prior to delivery
	  	 	*****	 
		  	  
	  
	 

 If the schedule results in any Predelivery Payment falling due prior to the date of signature
of the Agreement, such Predelivery Payments shall be made upon signature of the Agreement. 
 UNQUOTE 

 

	2.2	***** 

  

	 	5.3.2	***** 

  

	 	5.3.3	***** 

  

			
	 Payment Date
	  	Fixed Amount or Percentage of
applicable Predelivery Payment
Reference Price
		  	*****
	 *****
	  	*****
	 *****
	  	*****
	 *****
	  	*****
	 *****
	  	*****
	 *****
	  	
	 *****
	  	*****
	 *****
	  	*****
	 *****
	  	*****
	 *****
	  	*****
		  	  

	 Total payment prior to delivery
	  	*****
		  	  

 ***** 

  

	*****	Confidential portions of the material have been omitted and filed separately with the Securities and Exchange Commission. 

LA 1-3 

	2.3	***** 

 Clause 5.3.5 is deleted in its entirety and replaced with the following quoted
text: 
 QUOTE 
  

	 	5.3.5	***** 

  

	 	(i)	***** 

  

	 	(ii)	***** 

  

	 	(iii)	***** 

 UNQUOTE 
  

	2.4	Taxes 

 Clause 5.5 is deleted in its entirety and replaced with the following quoted text: 

QUOTE 
  

	 	5.5.1	***** 

  

	 	5.5.2	***** 

  

	 	5.5.3	***** 

 “Taxes” means any present or future stamp or
other taxes, levies, imposts, duties, charges, fees, deductions or withholdings, now or hereafter imposed, levied, collected, withheld or assessed by any governmental authority or any political subdivision or taxing authority thereof or therein.

 UNQUOTE 
  

	2.5	Application of Payments 

 Clause 5.6 is deleted in its entirety and replaced with the following
quoted text: 
 QUOTE 
  

	 	5.6	Application of Payments 

 ***** 

UNQUOTE 
  

	2.6	Clause 5.8 is deleted in its entirety and replaced with the following quoted text: 

  

	*****	Confidential portions of the material have been omitted and filed separately with the Securities and Exchange Commission. 

LA 1-4 

 QUOTE 
  

	 	5.8	OVERDUE PAYMENTS 

  

	 	5.8.1	***** 

  

	 	5.8.2	***** 

 UNQUOTE 
  

	2.7	Payment in Full 

 Clause 5.10 is deleted in its entirety and replaced with the following quoted
text: 
 QUOTE 
  

	 	5.10	Payment in Full 

 ***** 

UNQUOTE 
  

	2.8	Cross Collateralization 

 ***** 

 

	3.	ASSIGNMENT 

 Notwithstanding any other provision of this Letter Agreement
or of the Agreement but subject to Clause 21.2 and Clause 21.5 of the Agreement, this Letter Agreement and the rights and obligations of the Buyer hereunder will not be assigned or transferred in any manner without the prior written consent of the
Seller *****, and any attempted assignment or transfer in contravention of the provisions of this Paragraph 3 will be void and of no force or effect. 
  

	4.	CONFIDENTIALITY 

 This Letter Agreement is subject to the terms and conditions of Clause
22.11 of the Agreement. 
  

	5.	COUNTERPARTS 

 This Letter Agreement may be executed by the parties
hereto in separate counterparts, each of which when so executed and delivered shall be an original, but all such counterparts shall together constitute one and the same instrument. 

  

	*****	Confidential portions of the material have been omitted and filed separately with the Securities and Exchange Commission. 

LA 1-5 

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

			
	Very truly yours,
	
	AIRBUS S.A.S.
		
	By:	 	 /s/ Patrick de Castelbajac

		 	 Patrick de Castelbajac

	Its:	 	 Vice President Contracts

  

			
	Accepted and Agreed
	
	REPUBLIC AIRWAYS HOLDINGS INC.
		
	By:	 	 /s/ Bryan Bedford

		 	 Bryan Bedford

	Its:	 	 President

  
 LA 1 SigPageEX-10.15(c)

 Exhibit 10.15(c) 

LETTER AGREEMENT NO. 2 
 As of
September 30, 2011 
 Republic Airways Holdings Inc. 

8909 Purdue Road 
 Suite 300 

Indianapolis, Indiana 46268 
  

	Re:	PURCHASE INCENTIVES 

 Dear Ladies and Gentlemen, 

REPUBLIC AIRWAYS HOLDINGS INC. (the “Buyer”) and AIRBUS S.A.S. (the “Seller”) have entered into an Airbus
A320 Family Purchase Agreement of even date herewith (the “Agreement”) which covers, among other matters, the sale by the Seller and the purchase by the Buyer of certain Aircraft, under the terms and conditions set forth in said
Agreement. The Buyer and the Seller have agreed to set forth in this Letter Agreement No. 2 (the “Letter Agreement”) certain additional terms and conditions regarding the sale of the Aircraft. Capitalized terms used
herein and not otherwise defined in this Letter Agreement have the meanings assigned thereto in the Agreement. The terms “herein,” “hereof” and “hereunder” and words of similar import refer to this Letter Agreement.

 Both parties agree that this Letter Agreement constitutes an integral, nonseverable part of said Agreement, that the provisions of said
Agreement are hereby incorporated herein by reference, and that this Letter Agreement is governed by the provisions of said Agreement, except that if the Agreement and this Letter Agreement have specific provisions which are inconsistent, the
specific provisions contained in this Letter Agreement will govern. 

  
 LA 2-1 

	1.	A320 AIRCRAFT ***** 

 ***** 

 

	1.1	***** 

  

	1.2	***** 

  

	1.3	***** 

  

	1.4	***** 

  

	1.5	***** 

  

	1.6	***** are quoted at delivery conditions prevailing in *****. 

  

	1.7	***** 

  

	2.	A319 AIRCRAFT ***** 

 ***** 

 

	2.1	***** 

  

	2.2	***** 

  

	2.3	***** 

  

	2.4	***** 

  

	2.5	***** 

  

	2.6	***** are quoted at delivery conditions prevailing in ***** 

  

	2.7	***** 

  

	3.	A319 ***** 

  

	3.1	***** 

  

	3.2	***** 

  

	3.3	***** 

  

	4.	A321 AIRCRAFT ***** 

 ***** 

 

	4.1	***** 

  

	*****	Confidential portions of the material have been omitted and filed separately with the Securities and Exchange Commission. 

LA 2-2 

	4.2	***** 

  

	4.3	***** 

  

	4.4	***** 

  

	4.5	***** 

  

	4.6	***** 

  

	4.7	***** are quoted at delivery conditions prevailing in ***** 

  

	4.8	***** 

  

	5.	***** 

  

	5.1	***** 

  

	5.2	***** 

  

	5.3	***** 

  

	6.	***** 

  

	6.1	***** 

  

	 	(i)	***** 

  

	 	(ii)	***** 

  

	 	(iii)	***** 

 ***** 
  

	6.2	***** 

  

	 	(i)	***** 

  

	 	(ii)	***** 

  

	 	(iii)	***** 

  

	7.	PRICE REVISION FORMULAE 

  

	7.1	 Part 1 of Exhibit C, Seller Price Revision Formula, is deleted in its entirety and replaced with the Part 1 of
Exhibit C, annexed as Appendix 1 to this Letter Agreement. 

  

	*****	Confidential portions of the material have been omitted and filed separately with the Securities and Exchange Commission. 

LA 2-3 

	7.2	 Part 2 of Exhibit C, Propulsion System Price Revision Formula – CFM International, is deleted in its
entirety and replaced with the Part 2 of Exhibit C, annexed as Appendix 2 to this Letter Agreement. 

  

	8.	***** 

 ***** 

 

	9.	ASSIGNMENT 

 Notwithstanding any other provision of this Letter Agreement
or of the Agreement but subject to Clause 21.2 and Clause 21.5 of the Agreement, this Letter Agreement and the rights and obligations of the Buyer hereunder will not be assigned or transferred in any manner without the prior written consent of the
Seller (except as provided in Paragraph 7 of Letter Agreement No. 3), and any attempted assignment or transfer in contravention of the provisions of this Paragraph 9 will be void and of no force or effect. 

 

	10.	CONFIDENTIALITY 

 This Letter Agreement is subject to the terms and conditions of Clause
22.11 of the Agreement. 
  

	11.	COUNTERPARTS 

 This Letter Agreement may be executed by the parties
hereto in separate counterparts, each of which when so executed and delivered will be an original, but all such counterparts will together constitute one and the same instrument. 

  

	*****	Confidential portions of the material have been omitted and filed separately with the Securities and Exchange Commission. 

LA 2-4 

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

			
	Very truly yours,
	
	AIRBUS S.A.S.
		
	By:	 	 /s/ Patrick de Castelbajac

		 	 Patrick de Castelbajac

	Its:	 	 Vice President Contracts

  

			
	Accepted and Agreed
	
	REPUBLIC AIRWAYS HOLDINGS INC.
		
	By:	 	 /s/ Bryan Bedford

		 	 Bryan Bedford

	Its:	 	 President

  
 LA 2 SigPage 

 APPENDIX 1 TO LETTER AGREEMENT NO. 2 

 

	PART 1	SELLER PRICE REVISION FORMULA 

  

	1.	Base Prices 

 The Base Prices of the A319 Airframe, ***** A320
Airframe,***** A321 Airframe, ***** (each, a “Base Price”) are subject to adjustment for changes in economic conditions as measured by data obtained from the US Department of Labor, Bureau of Labor Statistics in
accordance with the provisions hereof. 
  

	2.	Base Period 

 Each Base Price has been established in accordance with the
average economic conditions prevailing in ***** as defined by “ECIb” and “ICb” index values indicated hereafter. 
  

	3.	Indexes 

 Labor Index: “Employment Cost Index for Workers in
Aerospace manufacturing” hereinafter referred to as “ECI336411W,” quarterly published by the US Department of Labor, Bureau of Labor Statistics, in “NEWS,” and found in: Table 9, “WAGES and SALARIES (not seasonally
adjusted): Employment Cost Indexes for Wages and Salaries for private industry workers by industry and occupational group,” or such other name that may be from time to time used for the publication title and/or table, (Aircraft manufacturing,
NAICS Code 336411, base month and year December 2005 = 100). 
 The quarterly value released for a certain month (March,
June, September and December) shall be the one deemed to apply for the two (2) preceding months. 
 Index code for access on the Web
site of the US Bureau of Labor Statistics: CIU2023211000000I. 
 Material Index: “Industrial Commodities”
(hereinafter referred to as “IC”) as published in “PPI Detailed report” (found in Table 6. “Producer price indexes and percent changes for commodity groupings and individual items not seasonally adjusted” or such other
names that may be from time to time used for the publication title and/or table). (Base Year 1982 = 100). 
 Index code for access on the Web
site of the US Bureau of Labor Statistics: WPU03THRU15. 
  

	4.	Revision Formula 

 ***** 

  

	*****	Confidential portions of the material have been omitted and filed separately with the Securities and Exchange Commission. 

LA 2-6 

	5.	General Provisions 

  

	5.1	Rounding 

 The Labor Index average and the Material Index average shall
be computed to the first decimal. If the next succeeding place is five (5) or more, the preceding decimal place shall be raised to the next higher figure. 

Each quotient shall be rounded to the nearest ten thousandth (4 decimals). If the next succeeding place is five (5) or
more, the preceding decimal place shall be raised to the next higher figure. 
 The final factor shall be rounded to the nearest ten
thousandth (4 decimals). 
 The final price shall be rounded to the nearest whole number (0.5 or more rounded to 1). 

 

	5.2	Substitution of Indexes for Airframe Price Revision Formula 

 If; 

 

	 	(i)	 the United States Department of Labor substantially revises the methodology of calculation of the Labor Index
or the Material Index as used in the Airframe Price Revision Formula, or 

  

	 	(ii)	 the United States Department of Labor discontinues, either temporarily or permanently, such Labor Index or
such Material Index, or 

  

	 	(iii)	 the data samples used to calculate such Labor Index or such Material Index are substantially changed;

 The Seller shall select a substitute index for inclusion in the Seller Price Revision Formula (the
“Substitute Index”). 
 The Substitute Index shall reflect as closely as possible the actual variance of the Labor
Costs or of the material costs used in the calculation of the original Labor Index or Material Index as the case may be. 

As a result of the selection of the Substitute Index, the Seller shall make an appropriate adjustment to the Seller Price
Revision Formula to combine the successive utilization of the original Labor Index or Material Index (as the case may be) and of the Substitute Index. 
  

	5.3	Final Index Values 

 The index values as defined in Clause 4. hereof
shall be considered final and no further adjustment to the Base Prices as revised at the Delivery Date of the Aircraft shall be made after Aircraft Delivery for any subsequent changes in the published index values. 

  

	*****	Confidential portions of the material have been omitted and filed separately with the Securities and Exchange Commission. 

LA 2-7 

	5.4	***** 

  

	*****	Confidential portions of the material have been omitted and filed separately with the Securities and Exchange Commission. 

LA 2-8 

 APPENDIX 2 TO LETTER AGREEMENT NO. 2 

 

	PART 2	PROPULSION SYSTEM PRICE REVISION FORMULA 

 CFM INTERNATIONAL 

 

	1.	REFERENCE PRICE OF THE PROPULSION SYSTEM 

 The “Reference Price”
(as such term is used in this Exhibit C Part 2) of a set of two (2) CFM International 
 A319 LEAP-X1A24 Engines is *****, 

A320 LEAP-X1A26 Engines is *****, and 

A321 LEAP-X1A32 Engines is *****. 

The Reference Price is subject to adjustment for changes in economic conditions as measured by data obtained from the US
Department of Labor, Bureau of Labor Statistics and in accordance with the provisions of this Exhibit C Part 2. 
  

	2.	REFERENCE PERIOD 

 The Reference Price has been established in accordance
with the economic conditions prevailing for ***** as defined by CFM International by the Reference *****. 
  

	3.	INDEXES 

 Labor Index: “Employment Cost Index for Workers in
Aerospace manufacturing” hereinafter referred to as “ECI336411W,” quarterly published by the US Department of Labor, Bureau of Labor Statistics, in “NEWS,” and found in: Table 9, “WAGES and SALARIES (not seasonally
adjusted): Employment Cost Indexes for Wages and Salaries for private industry workers by industry and occupational group,” or such other name that may be from time to time used for the publication title and/or table, (Aircraft manufacturing,
NAICS Code 336411, base month and year December 2005 = 100, *****). 
 The quarterly value released for a certain month
(March, June, September and December) will be the one deemed to apply for the two (2) preceding months. 
 Index code for access on the
Web site of the US Bureau of Labor Statistics: CIU2023211000000I. 
 Material Index: “Industrial
Commodities” (hereinafter referred to as “IC”) as published in “PPI detailed report” (found in Table 6. “Producer price indexes and percent changes for commodity groupings and individual items not seasonally
adjusted” or such other names that may be from time to time used for the publication title and/or table). (Base Year 1982 = 100). 

  

	*****	Confidential portions of the material have been omitted and filed separately with the Securities and Exchange Commission. 

LA 2-9 

 Index code for access on the Web site of the US Bureau of Labor Statistics: WPU03THRU15. 

 

	4.	REVISION FORMULA 

 ***** 

 

	5.	GENERAL PROVISIONS 

  

	5.1	Roundings 

  

	 	(i)	 The Material Index average (*****) will be rounded to the nearest second decimal place and the Labor
Index average (*****) will be rounded to the nearest first decimal place. 

  

	 	(ii)	***** will be rounded to the nearest second decimal place. 

  

	 	(iii)	 The final factor (*****) will be rounded to the nearest fourth decimal place. If the next succeeding
place is five (5) or more, the preceding decimal place will be raised to the next higher figure. 

  

	 	(iv)	After final computation, ***** will be rounded to the nearest whole number (0.5 rounds to 1). 

  

	5.2	Final Index Values 

 The revised Reference Price at the date of Aircraft delivery will
not be subject to any further adjustment in the indexes. 
  

	5.3	Interruption of Index Publication 

 If the US Department of Labor
substantially revises the methodology of calculation or discontinues any of the indexes referred to hereabove, the Seller will reflect the substitute for the revised or discontinued index selected by CFM International, such substitute index to lead
in application to the same adjustment result, insofar as possible, as would have been achieved by continuing the use of the original index as it may have fluctuated had it not been revised or discontinued. 

Appropriate revision of the formula will be made to accomplish this result. 

 

	5.4	Annulment of the Formula 

 Should the above ***** provisions
become null and void by action of the US Government, the Reference Price will be adjusted due to increases in the costs of labor and material which have occurred from the period represented by the applicable Reference ***** to the
***** prior to the scheduled month of Aircraft delivery. 
  

	5.5	***** 

  

	*****	Confidential portions of the material have been omitted and filed separately with the Securities and Exchange Commission. 

LA 2-10

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