Document:

EX-10.10.14

 Exhibit 10.10.14 

Execution Copy 
 THIRTEENTH
AMENDMENT TO CODE SHARE AND 
 REVENUE SHARING AGREEMENT 

THIS THIRTEENTH AMENDMENT TO CODE SHARE AND REVENUE SHARING AGREEMENT (this “Thirteenth Amendment”) is made and entered into
as of December 24, 2013 (the “Effective Date”), by and between US AIRWAYS, INC., a Delaware corporation (“US Airways”) and MESA AIRLINES, INC., a Nevada corporation (“Mesa”). 

RECITALS: 

A.        US Airways and Mesa are parties to that certain Code Share and Revenue Sharing Agreement,
dated as of February 1, 2001, as amended by: (1) the First Amendment to Code Share and Revenue Sharing Agreement, dated to be effective April 27, 2001; (2) the Second Amendment to Code Share and Revenue Sharing Agreement, dated as of
October 24, 2002; (3) the Third Amendment to Code Share and Revenue Sharing Agreement, dated as of January 29, 2003; (4) the Fourth Amendment to Code Share and Revenue Sharing Agreement and Release, dated as of September 5, 2003; (5)
the Fifth Amendment to Code Share and Revenue Agreement, dated as of January 28, 2005; (6) the Sixth Amendment to Code Share and Revenue Sharing Agreement and Settlement Agreement, dated as of July 27, 2005; (7) the Seventh Amendment to
Code Share and Revenue Sharing Agreement and Settlement, Assignment and Assumption Agreement, dated as of September 10, 2007; (8) the Eighth Amendment to Code Share Agreement and Settlement Agreement, dated as of May 12, 2008; (9) the
Ninth Amendment to Code Share and Revenue Sharing Agreement, dated as of March 30, 2009; (10) the Tenth Amendment to Code Share and Revenue Sharing Agreement, dated as of November 18, 2010 (the “Tenth Amendment”); (11) the
Eleventh Amendment to Code Share and Revenue Sharing Agreement, dated as of July 1, 2012 (the “Eleventh Amendment”); and (12) the Twelfth Amendment to the Code Share and Revenue Sharing Agreement, dated as of February 14,
2013 (collectively, the “Code Share Agreement”). 
 B.        All capitalized terms
used herein, but not otherwise defined herein, shall have the meanings given to such terms in the Code Share Agreement. It is the intent of the parties that this Thirteenth Amendment and the subject matter addressed herein is integral to the
entirety of the Code Share Agreement and is not severable therefrom. 
 C.        Mesa and US
Airways desire to amend the Code Share Agreement to (1) extend the term on the original 38 Aircraft currently operated under the Code Share Agreement; (2) add 4 CRJ-900 aircraft to the Code Share
Agreement; and (3) to make the other changes and agreements as set forth in this Thirteenth Amendment. 
 NOW,
THEREFORE, in consideration of the promises and covenants set forth herein, and for other valuable consideration, the receipt and sufficiency of which are hereby acknowledged, US Airways and Mesa agree as follows: 

1.          Extension of Original 38 CRJ-900 Aircraft. The
Term of the Code Share Agreement as it relates to the original 38 CRJ-900 Aircraft currently operated thereunder (the “Original Aircraft”) shall be extended by an average of approximately 6 years,
with the Original Aircraft being returned in accordance with Section 5 below. Except as modified by this Thirteenth 

  
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Amendment, all terms and conditions currently applicable to the Original Aircraft shall remain in effect during the extended term. 

2.          Addition of CRJ-900 Aircraft. 

2.1        New Aircraft. Mesa will procure 4 CRJ-900
aircraft (the “New Aircraft”) and will operate such New Aircraft pursuant to the terms of the Code Share Agreement, as amended hereby. Exhibit A to this Thirteenth Amendment lists the 4 New Aircraft that are the subject of this Thirteenth
Amendment. 
 2.2        Term of New Aircraft. The Term of the Code Share Agreement, as it
relates to the New Aircraft, shall be 8 years from the scheduled induction date of each such New Aircraft such that the Code Share Agreement shall expire as to each New Aircraft on the Expiration Date set forth on the table in Section 4 of this
Amendment, unless terminated earlier as provided herein. 
 2.3        Aircraft Procurement.
No later than February 15, 2014, Mesa shall demonstrate to US Airways’ reasonable satisfaction that Mesa will be able to execute definitive leases for, or otherwise procure, the New Aircraft (for example by providing copies of executed
leases, term sheets, LOIs, or MOUs showing the induction date and term for the New Aircraft covered by such documents). Should Mesa fail to demonstrate to US Airways’ reasonable satisfaction that Mesa will procure and deliver the New Aircraft
as required hereby, US Airways may, at its sole discretion, cancel the addition of the New Aircraft to the Code Share Agreement without any further liability or obligation whatsoever. 

3.          Configuration, Branding & Livery of New Aircraft. The New Aircraft
will be painted in US Airways Express or American Eagle livery at US Airways’ option and with reasonable advanced notice to allow Mesa to implement the chosen livery. The New Aircraft will be delivered in a single-class configuration on the
dates specified in the “Induction Schedule” set forth in Section 4 of this Amendment. After the New Aircraft are delivered, Mesa will reconfigure the New Aircraft to a dual-class configuration that meets the US Airways’ Express
or American Eagle’s requirements. Such reconfiguration shall occur in accordance with a reconfiguration schedule established by US Airways (the “Reconfiguration Schedule”), which shall be accomplished as soon as the seats are
available, but in no event later than November 15, 2014. In the event that the New Aircraft are not reconfigured as required by this section, the charges applicable to late delivery of the New Aircraft set forth in section 4 below shall apply.
Mesa will, in consultation with US Airways, manage the reconfiguration project in order to expedite the reconfiguration while minimizing the operational impact. The dual-class configuration will be consistent with the specifications for the
reconfiguration of the Aircraft added by the Twelfth Amendment. US Airways and Mesa will collaborate in the management of the repainting, and redecorating process to ensure that the New Aircraft conform to US Airways’ Express or American
Eagle’s interior and exterior specifications and branding requirements, including leather seating surfaces throughout. US Airways will reimburse Mesa the actual and reasonable costs incurred to paint, redecorate and reconfigure the New
Aircraft, including first class kits, parts, installation labor, ferry costs, project management, and all other costs reasonably related with the reconfiguration the New Aircraft to a configuration materially similar to existing aircraft; provided
that such costs shall not exceed $[***] per New Aircraft. In addition, US Airways will reimburse Mesa up to $[***] for certain one-time costs related to the 

  
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reconfiguration, including the cost of non-recurring engineering, prototypes, supplemental type certificates and manuals. 

4.          Induction and Reconfiguration Schedule for New Aircraft. 

4.1        Induction and Reconfiguration Schedule. The New Aircraft shall be delivered,
painted, redecorated, have adequate pilot and crew staffing and otherwise be ready to operate in the US Airways network in accordance with the Induction Schedule set forth below. Additionally, the New Aircraft will be reconfigured in accordance with
the Reconfiguration Schedule established pursuant to Section 3 of this Amendment. In the event that a New Aircraft will not be ready to operate in the US Airways network on the date required by the Induction Schedule or Reconfiguration
Schedule, respectively, Mesa shall immediately notify US Airways by telephone and in writing by confirmed email (“Late Delivery Notice”). New Aircraft that are not ready to operate in the US Airways network on the date required by the
Induction Schedule or Reconfiguration Schedule shall be subject to the following late-delivery charges, that will accrue until such New Aircraft are inducted: $[***] per New Aircraft per aircraft day, if the Late Delivery Notice is given to US
Airways more than 45 days prior to the applicable Induction Date or reconfiguration date, $[***] per New Aircraft per aircraft day if the Late Delivery Notice is given between 45 days and 14 days prior to the applicable Induction Date or
reconfiguration date, and $[***] per aircraft day if the Late Delivery Notice is given less than 14 days prior to the applicable Induction Date or reconfiguration date. With respect to the Induction Schedule, after 365 cumulative aircraft days of
delay, US Airways may, at its option, elect to cancel the induction of the New Aircraft subject to the delay. Such late-delivery charges shall constitute liquidated damages and not a penalty, and each party agrees that such liquidated damages are a
reasonable approximation of the actual damages but that the amount of actual damages that would result from late delivery or late reconfiguration of the New Aircraft is difficult or impossible to calculate. 

4.2        Force Majeure. Notwithstanding the foregoing, performance by Mesa under this
provision shall not be deemed to be in default and shall not give rise to the payment of the aforementioned late-delivery charge or any other penalties, costs, fees or expenses of any kind where delays or defaults are directly due to war,
insurrection, strikes, walk-outs, riots, floods, earthquakes, fires, casualties, acts of God, governmental restrictions imposed or mandated by governmental entities after the date of this Amendment, enactment of conflicting state or federal laws or
regulations, new or supplementary environmental regulations or litigation, materially adverse national or global economic conditions, or any other matter beyond the reasonable control of Mesa; provided that failure to procure the New Aircraft or the
materials and/or services necessary to repaint, redecorate or reconfigure the New Aircraft shall not be deemed to be matters beyond Mesa’s reasonable control unless such failure is due to one of the specific events set forth above. 

  
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 NEW AIRCRAFT INDUCTION SCHEDULE 

 

					
	 Induction Date

 
	  	 Expiration
Date
  
	  	
Configuration at Induction
  

	 6/1/14

 
	  	6/1/22	  	single-class
	 6/1/14

 
	  	6/1/22	  	single-class
	 7/1/14

 
	  	7/1/22	  	single-class
	 7/1/14

 
	  	7/1/22	  	single-class

 5.          Aircraft Return Schedule. The New Aircraft and the
Aircraft added by the Twelfth Amendment shall be returned on the dates set forth on their respective Induction Schedules (unless terminated early or extended in accordance with the applicable terms). All Original Aircraft operated under the Code
Share Agreement will be returned ratably over an 18 month period beginning January 1, 2021 and concluding July 1, 2022 with a midpoint of September 30, 2021. This schedule may be modified to reflect the extension of aircraft
contingent on the exercise of US Airways’ extension rights. For avoidance of doubt, the Twelfth Amendment aircraft, and the incremental 4 aircraft as contemplated in this amendment will have terms of 8 years from their induction date. The
Original Aircraft shall be ratably returned within that schedule beginning January 1, 2021 and the average extension term of the Original Aircraft will be 6 years from the September 30, 2015 expiration date in Amendment 10. 

6.          Extension Rights. US Airways will have three successive one year extension rights
covering all Aircraft operated under the Code Share Agreement (the “Extended Aircraft”). In addition, US Airways will have the right to extend individual Aircraft for up to 6 months to foster a more manageable return schedule. Ownership
rates on leased Extended Aircraft will be passed through to US Airways at actual and documented lease cost. Ownership rates on Mesa-owned Extended Aircraft will be set at the average rate of the leased aircraft. Pursuant to this 13th Amendment and
as mutually agreed by the parties, or under such other terms as may be mutually agreed by the parties, US Airways, or its successors may add any type of additional aircraft without restriction. 

7.          Rates. 

7.1        Rates. The rates applicable to the Original Aircraft, the Twelfth Amendment
Aircraft, and to the New Aircraft upon their entry into service under the Code Share Agreement are set forth in Exhibit B to this Amendment. 

7.2        Escalation. For rate escalation adjustments beginning in February 2014, the
escalation rate will be based on the index specified in the Code Share Agreement, but capped at [***]%. 

7.3        Margin. The revenue share component covered in “Segment Revenue Payments”
in Amendment 10 shall be replaced by a fixed margin payment of $[***] per aircraft month (as set forth in Exhibit B), fixed for the duration of the JSA and only applicable for CRJ-900s in service at US
Airways. If additional aircraft types are added, US Airways and Mesa will mutually agree to new terms, each acting reasonably. 

  
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 8.        Monthly Reconciliation. Section 7.5.2 of the
Code Share Agreement shall be replaced by the following: Not later than 90 days following the last day of each month, Mesa shall provide a reconciliation of Estimated Costs for Guaranteed Non-Maintenance
Costs, Actual Costs, Guaranteed Maintenance costs against the actual Guaranteed Non-Maintenance Costs, Actual Costs, Guaranteed Maintenance costs owed for such month by applying the rates set forth in Exhibit
A as applicable. Mesa will provide US Airways with an invoice reflecting any additional payments or credits resulting from such reconciliation. 
 If the
Estimated Costs paid by US Airways exceed the Incurred Costs, then Mesa shall reimburse US Airways the amount that the Estimated Costs exceeded in the Incurred Costs. Payment by Mesa is due at the time the reconciliation is provided. If the Incurred
Costs exceed the Estimated Costs, then US Airways will reimburse Mesa at the time the reconciliation is provided. 
 For avoidance of doubt, all invoices
that include charges for pass-through expenses shall be accompanied by appropriate receipts or other supporting documentation evidencing the pass-through expenses charged. 

9.        Spare Aircraft. US Airways will schedule Mesa’s aircraft to provide a minimum of one Spare
Aircraft per 30 active Aircraft operated under the Code Share Agreement, but in no event less than 1 Spare Aircraft per hub. For purposes of this Section 5, a “hub” shall mean an airport where Mesa operates a monthly average of 35
flights per day under the Code Share Agreement. 
 10.        Crew Rest Regulation Costs. US Airways and Mesa
will jointly calculate the cost impact of the new Part 117 Flight Crewmember Duty Rest Requirements to be implemented beginning in December 2013. The cost impact will be calculated as a cost per block hour based the difference between the number of
pilots needed prior to the new rule “baseline” compared to the number of pilots needed for the same schedule after the rule. US Airways will pay [***] of such cost per block hour, subject to a cap of $[***] per block hour. The cost impact
will be calculated quarterly for the first year after the new rules are implemented and both Mesa and US Airways will work closely to minimize the cost impact of the new rules. After the first year, the cost impact will be set for the remaining term
of the Code Share Agreement. 
 11.        Performance Credit Adjustment. In recognition of the extension of
the Agreement and the addition of the New Aircraft, US Airways will provide Mesa with a one-time [***] reduction on the Quarterly Performance Credit incurred by Mesa for the
Apr-June 2013 quarter. The reduction will be applied on a pro-rata basis upon the induction of each New Aircraft. In addition, US Airways will provide Mesa a full flight-by-flight reconciliation of the Quarterly Performance Credit calculation to the operational performance statistics prior to applying the April – June 2013
Quarterly Performance Credit. 
 12.        Hub Protection. Except with regard to operations conducted on
behalf of United Airlines, Mesa shall not operate a hub and spoke operation for another carrier in any current US Airways and American hub, specifically [***]. Notwithstanding the foregoing, however, Mesa may provide flight services to the US
Airways and American hubs under codeshare or marketing relationships with other carriers as a “spoke service” (5 flights or less per day in a given airport). 

  
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 13.        CAT II Compliance. Mesa shall become CAT II
compliant the earlier of 12 months from the date of this Thirteenth Amendment or December 31, 2014. Failure to comply will result in a non-compliance of a $[***] per month payable by Mesa to US Airways
until Mesa is CAT II compliant. 
 14.        Customer Programs. Mesa will participate in any current or
future US Airways programs to monitor the product quality and/or customer satisfaction with programs such as but not limited to minimum equipment list (MEL) and non-essential furnishings (NEF) monitoring and
customer satisfaction. 
 15.        Engine Maintenance Program. Mesa agrees to enter into a maintenance
program for its CRJ family engines covered under the Code Share Agreement which satisfies US Airways as reasonable for the aircraft in US Airways’ sole discretion. 

16.        ACARS. In order improve the statistical reliability of the data collected by the ACARS systems
currently in place on the Aircraft, Mesa agrees to remove 7 of the ACARS systems currently in the Aircraft added by the Twelfth Amendment and to install 5 such ACARS systems in 5 of the Original Aircraft and to install 2 such ACARS systems in the
New Aircraft. All Aircraft operating under the Code Share Agreement shall be equipped with ACARS systems with the minimum functionality of the ACARS systems in the Original Aircraft. 

17.        RON Maintenance Base Requirements. The Fleet percentages set forth in Section 8 of the Twelfth
Amendment shall be changed as follows: The percentage of the Fleet to remain overnight at the applicable Maintenance Bases shall be changed from [***]% to [***]% and the percentage of the Fleet to remain overnight in the combination of Maintenance
Bases and Outstation Bases shall be changed from [***]% to [***]%. 
 18.        Mexico Office. As soon as
reasonably practicable, US Airways will assume responsibility for administrative duties associated with airport contracts, records and statistics for required reporting and administrative activities in Mexico currently handled by Mesa’s Mexico
office. To the extent Mesa incurs attorneys fees or other administrative expenses for legal filings and registrations, Mesa shall pass through the invoices for such expenses and US Airways will reimburse Mesa. For the period from June 2011 through
September 20132 US Airways will pay Mesa $[***] monthly as payment for the Mexico office. Mesa hereby waives any past, present or future claims for payment related to the Mexico office other than such $[***] monthly payment. 

19.        Replacement of Code Share Agreement. Upon execution of this Thirteenth Amendment by both parties,
the parties shall, in good faith promptly negotiate and execute a new Jet Services Agreement to replace the existing Code Share Agreement reflecting the foregoing terms and all applicable terms and conditions set forth in the Code Share Agreement
and its various amendments. The purpose of such new Jet Services Agreement is to re-state and organize the previous agreement and clean up dead language for ease of administration. The parties agree to work in
good faith to have such new Jet Services Agreement in place by March 31, 2014. 
 20.        CD0 and CCF for
Non-Hub or Linear Flying. Section 9(d)(iii) of the Tenth Amendment (as previously amended in the Twelfth Amendment) shall be restated as follows: 

  
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 “Subject to adjustment as provided below in Section 9 of the Tenth Amendment, the CD0 and CCF
thresholds used in Section 9 of the Tenth Amendment for calculating credits, incentives, and default for performance are valid so long as the schedule given to Mesa for US Airways flying is for the PHX and CLT hubs and/or linear flying; and
provided, further, that the schedules are reasonably consistent with past practice US Airways scheduling parameters for utilization, RON maintenance time, turn times, and recovery time. In the event that Mesa operates more than “Equivalent
Aircraft equal to [***] of the total number of Aircraft operated by Mesa under the Code Share Agreement pursuant to a schedule given to Mesa for US Airways flying other than for the PHX or CLT hubs and/or linear flying, or if US Airways gives Mesa
scheduling parameters that are not reasonably consistent with past practice for utilization, RON maintenance time, turn times, and recovery time, the Service Level 1, Service Level 2 and early termination thresholds described in
Section 9(e) will be recalculated in a manner consistent with the calculation method used to establish the Service Levels and Incentive Levels in the 10th amendment, including the CCF and CD0 performance of American Airlines and US Airways
(“AA/US”) mainline and the other AA/US regional jet operators who have at least [***] of their AA/US-branded operations in those same hubs over the preceding 3 years. The performance thresholds will
be set based on this new baseline data-set such that Incentives Levels are triggered for performance above the same percentile of performance (and Service Level credits are triggered for performance below the
same percentile of performance) as were used to calculate the Service Levels and Incentive Levels set forth in the 10th Amendment. Notwithstanding the foregoing, in no event will the Incentive Level threshold fall below, nor the Service Level
thresholds rise above, the respective percentages set forth in the 10th Amendment. 
 “Equivalent Aircraft” shall be determined by dividing the
average daily scheduled block hours in and out of US Airways hubs other than CLT or PHX during a given month by the average daily utilization of active Aircraft in the Fleet for that month (total Mesa Aircraft flying for US Airways less spares and
maintenance Aircraft). 
 21.        Property Tax. In the event that Mesa provides services US Airways and at
least one other commercial airline in a particular property tax jurisdiction, the ratio used to calculate US Airways’ portion of property tax liability in such jurisdiction will be based on the allocation factor(s) used by such jurisdiction to
allocate value to Mesa. Such allocation will be verified and validated by US Airways. 
 US Airways has the right to audit Mesa’s calculation of
property taxes attributed to US Airways, using a third party auditor to audit up to 90% of the assessed value that is being apportioned by Mesa to US Airways. 

In order to facilitate the audit, Mesa will promptly provide all information reasonably requested by US Airways or the auditor, including the following: 

 

	 	●	 	 Copies of all returns, assessments (initial and final if applicable), assessor detailed workpapers and tax
bills involved in the audit. 

	 	●	 	 Copies of the actual flyaway database used to file the returns in Excel format. 

	 	●	 	 Internal workpapers and calculations made to prepare the returns. 

  
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	 	●	 	 Flight statistics (RPMs, ground time, flight miles, flight hours, arrivals & departures, etc.) in
electronic format such as Excel. Both raw statistics and apportioned statistics are to be provided. 

	 	●	 	 Actual flight schedules for the California test week, if applicable. 

	 	●	 	 Financial statements used for the filing of unit returns. 

	 	●	 	 Additional data upon request such as ground property, leased property, CIP, supplies, spare parts, fuel, etc.

 Prompt on site access to returns, assessments tax bills and back up workpapers shall be provided when requested. 

22.        Miscellaneous. 

22.1        Except as set forth in this Thirteenth Amendment, all of the terms and
conditions of the Code Share Agreement shall remain in full force and effect and be applicable to this Twelfth Amendment. 

22.2        This Thirteenth Amendment may be executed in counterparts, all of which
when taken together shall be one and the same document. 
 22.3        This
Thirteenth Amendment, including the Exhibits attached hereto, constitutes the entire agreement between the parties with respect to the subject matter hereof and supersedes all prior understandings with respect thereto. 

[Signatures Follow] 

  
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 IN WITNESS WHEREOF, the parties have duly executed this Thirteenth Amendment
as of the date first above written. 
  

					
	 US AIRWAYS, INC.
	 	

 
					
			
	 By:
	 	  
	 	

 
					
	 Name:
	 	  
	 	

 
					
	 Title:
	 	  
	 	

  

					
		
	 MESA AIRLINES, INC.
	 	

 
					
			
	 By:
	 	  
	 	

 
					
	 Name:
	 	  
	 	

 
					
	 Title:
	 	  
	 	

  
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 EXHIBIT A 

(List of CRJ-900s and Minimum Specifications) 

 

							
	Registration Number	  	Engine Type	  	Next Gen Aircraft (Y/N)	  	Manufacture Date
	15XXX	  	CF34-8C5	  	TBD	  	TBD
	15XXX	  	CF34-8C5	  	TBD	  	TBD
	15XXX	  	CF34-8C5	  	TBD	  	TBD
	 15XXX

 
	  	CF34-8C5	  	TBD	  	TBD

 Minimum Specifications: 

All New Aircraft must meet the following minimum specifications and be otherwise appropriate for providing Flight Services pursuant to the
Code Share Agreement: 
  

	 	●	 	 Capable of being configured in dual-class configuration in accordance with US Airways’ Express First
specifications consistent with the 47 Code Share Aircraft currently being operated by Mesa. 

	 	●	 	 Two lavatories, fore and aft, appropriate for dual-class configuration. 

	 	●	 	 Equipped with Bombardier Enhanced Performance Package (EPP) 

	 	●	 	 Capable of meeting all CAT II requirements 

	 	●	 	 ACARs functionality consistent with ACARs installed on the current 38 original
CRJ-900 flying at US Airways. 

  
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 EXHIBIT B 
  

									
	 Mesa Contract Rates (Effective July 31, 2013)

	
	 Guaranteed Non-Maintenance
Costs

		  		  	Original 38	  	+9 (Amd. 12)	  	+4
	 COST
CATEGORY
	  	UNIT	  	CRJ 900	  	CRJ 900	  	CRJ 900
					
	 Aircraft Lease & Overhead
	  	A/C MONTH	  		  		  	
	 Ownership
	  		  	 [***]
	  	 [***]
	  	 [***]

	 Overhead
	  		  	 [***]
	  	 [***]
	  	 [***]

	 Crew RON
	  		  	 [***]
	  	 [***]
	  	 [***]

	 Total
	  		  	 [***]
	  	 [***]
	  	 [***]

	 Flight Crew and Maintenance
	  	BLOCK HOUR	  	 [***]
	  	 [***]
	  	 [***]

	 Pilot
	  		  	 [***]
	  	 [***]
	  	 [***]

	 Flight Attendant
	  		  	 [***]
	  	 [***]
	  	 [***]

	 Total
	  		  	 [***]
	  	 [***]
	  	 [***]

	 Dispatchers
	  	DEPARTURE	  	 [***]
	  	 [***]
	  	 [***]

	 Guaranteed Non-Maintenance Cost Reduction
	  	A/C/MONTH	  	 [***]
	  	 [***]
	  	 [***]

	 Reduction Effective through September 30, 2015
	  	[***]	  	 [***]
	  	 [***]

	 Reduction Effective October 1, 2015
	  		  	 [***]
	  	 [***]
	  	 [***]

	 Aircraft Margin
	  	A/C/MONTH	  	 [***]
	  	 [***]
	  	 [***]

					
	 Guaranteed Maintenance Costs
	  		  		  		  	
		  		  	Original 38	  	+9 (Amd. 12)	  	+4
	 COST
CATEGORY
	  	 	  	CRJ 900	  	CRJ 900	  	CRJ 900
					
	 Maintenance Cost Per A/C
	  	A/C MONTH	  		  		  	
	 MX Employees
	  		  	 [***]
	  	 [***]
	  	 [***]

	 Engine & APU Depreciation
	  		  	 [***]
	  	 [***]
	  	 [***]

	 Total
	  		  	 [***]
	  	 [***]
	  	 [***]

	 Maintenance Base Cost
	  	BASE/MONTH	  	 [***]
	  	 [***]
	  	 [***]

	 Rent & Utilities
	  		  	 [***]
	  	 [***]
	  	 [***]

	 Personnel
	  		  	 [***]
	  	 [***]
	  	 [***]

	 Parts Depreciation
	  		  	 [***]
	  	 [***]
	  	 [***]

	 Equipment Depreciation
	  		  	 [***]
	  	 [***]
	  	 [***]

	 Total
	  		  	 [***]
	  	 [***]
	  	 [***]

	 Pass-through Maintenance Base
	  		  		  		  	
	 RON MX (TUS)
	  		  	[***]	  		  	
	 RON MX (SDF)
	  		  		  	[***]	  	
	 RON MX (TBD)1
	  		  		  		  	        [***]
	 Maintenance Cost Per Block Hour
	  	BLOCK HOUR	  		  		  	
	 Engine MX – Contractual
	  		  	 [***]
	  	 [***]
	  	 [***]

	 Engine MX – Other
	  		  	 [***]
	  	 [***]
	  	 [***]

	 Airframe MX
	  		  	 [***]
	  	 [***]
	  	 [***]

	 Total
	  		  	 [***]
	  	 [***]
	  	 [***]

  
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 1 Payable only if both parties mutually
agree that an additional maintenance base is required 

  
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 Exhibit 10.10.15 

FOURTEENTH AMENDMENT TO CODE SHARE AND 

REVENUE SHARING AGREEMENT 

THIS FOURTEENTH AMENDMENT TO CODE SHARE AND REVENUE SHARING AGREEMENT (this “Fourteenth Amendment”) is made and entered into
as of April 10, 2014 (the “Effective Date”), by and between US AIRWAYS, INC., a Delaware corporation (“US Airways”) and MESA AIRLINES, INC., a Nevada corporation (“Mesa”). 

RECITALS: 

A.        US Airways and Mesa are parties to that certain Code Share and Revenue Sharing Agreement,
dated as of March 20, 2001 but effective as of February 1, 2001, as amended (the “Code Share Agreement”). 

B.        The Code Share Agreement has previously been amended, including by the Twelfth Amendment to
Code Share and Revenue Sharing Agreement, dated February 13, 2013 (the “Twelfth Amendment”) and the Thirteenth Amendment to Code Share and Revenue Sharing Agreement, dated December 24, 2013 (the “Thirteenth Amendment”).

 C.        All capitalized terms used herein, but not otherwise defined herein, shall have the
meanings given to such terms in the Code Share Agreement. It is the intent of the parties that this Fourteenth Amendment and the subject matter addressed herein is integral to the entirety of the Code Share Agreement and is not severable therefrom.

 D.        Mesa and US Airways desire to amend the Code Share Agreement to add 6 CRJ-900 aircraft to the Code Share Agreement and to make the other changes and agreements as set forth in this Fourteenth Amendment. 

NOW, THEREFORE, in consideration of the promises and covenants set forth herein, and for other valuable consideration, the receipt and sufficiency of which
are hereby acknowledged, US Airways and Mesa agree as follows: 
 1.         Flight Services for American
Airlines. In connection with the operational integration of US Airways and American Airlines, Inc. (“American”) resulting from the merger between the parent company of US Airways and a wholly owned subsidiary of American’s parent
company American Airlines Group Inc. (formerly AMR Corporation), Mesa acknowledges and agrees that any Schedule provided to Mesa after the Effective Date pursuant to Section 2.1 of the Code Share Agreement may include Flights operated for
American under the “American Eagle” brand (the “American Flights”). Mesa will perform the Flight Services in connection with such American Flights in accordance with the terms and conditions of the Code Share Agreement. Mesa will
cooperate with US Airways and American to establish Mesa as a carrier within the American systems as requested by US Airways and/or American from time to time. 

2.          Addition of CRJ-900 Aircraft. 

2.1        New Aircraft. Mesa will procure 6 additional
CRJ-900 aircraft (the “New Aircraft”) and will operate such New Aircraft pursuant to the terms of the Code Share Agreement, as amended hereby. The New Aircraft shall be considered Aircraft for all
intents 

  

					
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	 	1	  	

 
and purposes of the Code Share Agreement, as applicable, except as may be expressly provided otherwise in this Fourteenth Amendment. Exhibit A to this Fourteenth Amendment lists the 6 New
Aircraft that are the subject of this Fourteenth Amendment. 
 2.2        Term of New
Aircraft. The Term of the Code Share Agreement, as it relates to the New Aircraft, shall be 8 years from the scheduled induction date of each such New Aircraft as provided in the table in Section 4.1 of this Fourteenth Amendment (each an
“Induction Date”), and the Code Share Agreement shall expire as to each New Aircraft when such Aircraft is returned in accordance with the return schedule described in Section 5 below, unless terminated earlier as provided in the Code
Share Agreement. 
 2.3        Aircraft Procurement. No later than May 15, 2014, Mesa
shall demonstrate to US Airways’ reasonable satisfaction that Mesa will be able to execute definitive leases for, or otherwise procure, the New Aircraft (for example by providing copies of executed leases, term sheets, LOIs, or MOUs showing the
induction date and term for the New Aircraft covered by such documents). Should Mesa fail to demonstrate to US Airways’ reasonable satisfaction that Mesa will procure and deliver the New Aircraft as required hereby, US Airways may, at its sole
discretion, cancel the addition of the New Aircraft to the Code Share Agreement without any further liability or obligation whatsoever. 

3.          Configuration, Branding & Livery of New Aircraft. The New Aircraft
will be painted in American Eagle livery, will be compliant with American Eagle brand interior and exterior specifications and branding requirements (“American Eagle Branding”), and will be delivered on the dates and in the configuration
specified in the “New Aircraft Induction Schedule” set forth in Section 4.1 of this Fourteenth Amendment (the “Induction Schedule”). US Airways and/or American will provide the American Eagle Branding requirements to Mesa.
Furthermore, American will provide such licenses and other documentation to Mesa regarding the American Eagle Branding as American may deem necessary in order to protect American’s intellectual property rights (including without limitation the
American Airlines and American Eagle trademarks and the American Eagle trade dress and livery). With respect to New Aircraft that are delivered in a single-class configuration in accordance with the Induction Schedule, Mesa will reconfigure such New
Aircraft to a dual-class configuration that meets the requirements set out below (the “Reconfiguration”). Such Reconfiguration shall occur in accordance with a reconfiguration schedule to be established by US Airways (the
“Reconfiguration Schedule”), and shall be accomplished as soon as the required seats are available, but in no event later than November 15, 2014. Each date stated in such Reconfiguration Schedule for the Reconfiguration of a New
Aircraft to be completed and such New Aircraft to be inducted into the US Airways network and/or the American system, as provided in Section 1 above, a “Reconfiguration Date”. In the event that the New Aircraft are not delivered
and/or reconfigured as required by this Section, the Late Delivery Charges (as defined below) and other terms and conditions applicable to late delivery of the New Aircraft set forth in Section 4 below shall apply. Mesa will, in consultation
with US Airways, manage the Reconfiguration project in order to expedite the Reconfiguration while minimizing the operational impact. The dual-class configuration will be identical to the Aircraft added by the Thirteenth Amendment (the
“Thirteenth Amendment New Aircraft”) and materially consistent with the Aircraft added by the Twelfth Amendment (the “Twelfth Amendment New Aircraft”) with the exceptions required to transition colors and materials to and make
the New Aircraft compliant with the American Eagle Branding. US 

  

					
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Airways and Mesa will collaborate in the management of the repainting, and redecorating process to ensure that the New Aircraft conform to the American Eagle Branding requirements, including
leather seating surfaces throughout. US Airways will reimburse Mesa the actual and reasonable costs incurred by Mesa to paint, redecorate and reconfigure the New Aircraft, including first class kits, parts, installation labor, ferry costs, project
management, and all other costs reasonably related with the reconfiguration of the New Aircraft to make them conform to the American Eagle Branding and/or the Reconfiguration requirements, as applicable, provided that such costs shall not exceed
$[***] per New Aircraft (the “Reimbursement Cap”). In addition, US Airways will reimburse Mesa up to $[***] for certain one-time costs related to the Reconfiguration of the New Aircraft (including
the cost of non-recurring engineering, prototypes, supplemental types certificates and manuals) to the extent such costs are new and have not been incurred and/or been reimbursed prior in connection with the
reconfiguration of the Twelfth Amendment New Aircraft and/or the Thirteenth Amendment New Aircraft. Such reimbursement payments shall be made, subject to the Reimbursement Cap, within 30 days of receipt by US Airways of an invoice from Mesa
detailing the actual and reasonable costs incurred, and submission by Mesa of auditable documentation supporting such actual and reasonable costs to US Airways’ reasonable satisfaction. For avoidance of doubt, the dual-class configuration shall
be the same 9F/67Y LOPA as the Thirteenth Amendment New Aircraft with Zodiac Close Comfort 2 seats in F, and Y-class seats (i) will be consistent throughout the cabin, (ii) will include the B/E
Spectrum seat that will be placed in the front of Y-class (including, without limitation, color, stitching and all seat contours), subject to approval by US Airways, and (iii) will have all bottom and
back seat cushions replaced with new cushions before November 14, 2014. After the new cushions have been installed on the Y-class seats as provided in (iii) of the previous sentence, Y-class seat cushions (bottom and/or back seat) for the Thirteenth Amendment New Aircraft and the New Aircraft will be replaced on an as needed basis, subject to (i) and (ii) of the previous sentence.
Furthermore, US Airways will be allowed to inspect and approve the first New Aircraft prior to its Induction Date to ensure that the quality is in line with US Airways and American Airlines standards and the terms of this Amendment. 

4.         Induction and Reconfiguration Schedule for New Aircraft. 

4.1        Induction and Reconfiguration Schedule. The New Aircraft shall be delivered,
painted, redecorated, have adequate pilot and crew staffing and otherwise be ready to operate in the US Airways network and/or the American system, as provided in Section 1 above, in accordance with the Induction Schedule set forth below.
Additionally, the New Aircraft will be reconfigured in accordance with the Reconfiguration Schedule established pursuant to Section 3 of this Fourteenth Amendment, as provided above. In the event that a New Aircraft will not be ready to operate
in the US Airways network and/or the American system, as provided in Section 1 above, on the date required by the Induction Schedule or Reconfiguration Schedule, respectively, Mesa shall immediately notify US Airways by telephone and in writing
by confirmed email (“Late Delivery Notice”). New Aircraft that are not ready to operate in the US Airways network and/or the American system, as provided in Section 1 above, on the date required by the Induction Schedule or
Reconfiguration Schedule, as applicable, shall be subject to the following late-delivery charges (the “Late Delivery Charges”), that will accrue until such New Aircraft are inducted: $[***] per New Aircraft per calendar day such New
Aircraft is delivered after the respective date stated-in the Induction Schedule or Reconfiguration Schedule, as applicable, for such New Aircraft (each a “Delay Day”), if the Late Delivery Notice is
given 

  

					
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	 	3	  	

 
to US Airways more than 45 days prior to the applicable Induction Date or Reconfiguration Date, $[***] per New Aircraft per Delay Day if the Late Delivery Notice is given between 45 days and 14
days prior to the applicable Induction Date or Reconfiguration Date, and $[***] per Delay Day if the Late Delivery Notice is given less than 14 days prior to the applicable Induction Date or Reconfiguration Date. Mesa shall pay such Late Delivery
Charges to US Airways within 30 days after receipt of an invoice from US Airways detailing the applicable Late Delivery Charges for each delayed New Aircraft. With respect to the Induction Schedule, after 365 cumulative Delay Days, US Airways may,
at its option, elect to cancel the induction of the New Aircraft subject to the delay. Such Late Delivery Charges shall constitute liquidated damages and not a penalty, and each party agrees that such liquidated damages are a reasonable
approximation of the actual damages, but that the amount of actual damages that would result from late delivery (whether for initial induction or from reconfiguration) of the New Aircraft is difficult or impossible to calculate. 

NEW AIRCRAFT INDUCTION SCHEDULE 
  

			
	 Induction Date

 
	  	
Configuration at Induction
  

	 August 1, 2014

 
	  	76 seat single-class
	 August 15, 2014

 
	  	76 seat single class
	 September 1, 2014

 
	  	76 seat single class
	 October 1, 2014

 
	  	76 seat dual-class
	 November 1, 2014

 
	  	76 seat dual-class
	 November 15, 2014

 
	  	76 seat dual-class

 4.2        Force Majeure. Notwithstanding the foregoing,
performance by Mesa under this provision shall not be deemed to be in default and shall not give rise to the payment of the aforementioned late-delivery charge or any other penalties, costs, fees or expenses of any kind where delays or defaults are
directly due to war, insurrection, strikes, walk-outs, riots, floods, earthquakes, fires, casualties, acts of God, governmental restrictions imposed or mandated by governmental entities after the date of this Amendment, enactment of conflicting
state or federal laws or regulations, new or supplementary environmental regulations or litigation, materially adverse national or global economic conditions, or any other matter beyond the reasonable control of Mesa; provided that failure to
procure the New Aircraft or the materials and/or services necessary to repaint, redecorate or reconfigure the New Aircraft shall not be deemed to be matters beyond Mesa’s reasonable control unless such failure is due to one of the specific
events set forth above. 
 5.        Aircraft Return Schedule. All Aircraft operated under the Code Share
Agreement, including the New Aircraft, shall be ratably returned beginning January 1, 2021 in accordance with the applicable return schedule terms provided in the Twelfth and Thirteenth Amendments.

  

					
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The Aircraft will return at an approximate rate of 3 aircraft per month, provided that the New Aircraft shall begin to be ratably returned beginning August 1, 2022 and provided further that
the Term for each of the New Aircraft shall be 8 years from the Induction Date for each New Aircraft (unless. terminated earlier or extended in accordance with the terms of the Code Share Agreement). Immediately after the return of each Aircraft as
provided herein, Mesa shall remove any and all references to US Airways’ trademarks, trade dress, livery, service marks and trade names and all references to the American Eagle Branding, as applicable, prior to any further use of such Aircraft.
For purposes of this Section 5, “return” shall mean that the respective Aircraft shall cease to be covered by the terms of the Code Share Agreement. 

6.         Rates. 

6.1        Rates. The rates applicable to the Original Aircraft (as such term is defined in the
Thirteenth Amendment), the Twelfth Amendment New Aircraft, the Thirteenth Amendment New Aircraft and to the New Aircraft upon their entry into service under the Code Share Agreement in accordance with the terms and conditions of this Fourteenth
Amendment, are set forth in Exhibit B to this Amendment. 
 6.2        Escalation. For
rate escalation adjustments beginning in February 2014, the escalation rate will be based on the index specified in the Code Share Agreement, but capped at ***%. 

7.         Performance Credit Adjustment. Section 11 of the Thirteenth Amendment is hereby deleted in
its entirety. In recognition of the addition of the Thirteenth Amendment New Aircraft and the New Aircraft, US Airways will provide Mesa with a one-time 50% reduction on the Quarterly Performance Credit
incurred by Mesa for the following periods: 
  

					
	 Quarter

 
	  	Perf. Rebate	  	50% Credit
	 Q2 2013

 
	  	 [***]
	  	
[***]

	 Q3 2013

 
	  	 [***]
	  	
[***]

	
Q4 2013
  
	  	 [***]
	  	
[***]

	 Total

 
	  	 [***]
	  	
[***]

	 A13 and A14 credit per inducted AC

 
	  	[***]

 The reduction will be applied in the amount of $[***] per Aircraft upon the induction of each of the Thirteenth Amendment New
Aircraft in accordance with the terms of the Thirteenth Amendment and each New Aircraft in accordance with the terms of this Fourteenth Amendment. Such payment shall be made within 30 days following the addition to the Code Share Agreement of each
Thirteenth Amendment New Aircraft and each New Aircraft added pursuant to this Fourteenth Amendment. In recognition of such Performance Credit reduction, both parties acknowledge and agree that all claims and amounts related to 2013 Performance
Credits are settled. 

  

					
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	 	5	  	

 8.         ACARS. Section 16 of the Thirteenth
Amendment is hereby deleted in its entirety. Instead, the parties hereby agree with regard to the ACARS systems as follows: 

8.1        ACARS Requirements. Mesa agrees to install 10 of the ACARS systems equivalent to the
specifications used by the Twelfth Amendment New Aircraft with 4 such ACARS systems being installed on the Thirteenth Amendment New Aircraft and 6 such ACARS systems being installed in the New Aircraft. All Aircraft operating under the Code Share
Agreement shall be equipped with ACARS systems with the minimum functionality of the ACARS systems in the Original Aircraft (as such term is defined in the Thirteenth Amendment). 

8.2        AGARS Swap Option. Solely at the discretion of US Airways, Mesa shall swap any
number of ACARS boxes from the Twelfth Amendment New Aircraft, the Thirteenth Amendment New Aircraft and the New Aircraft to the Original Aircraft (as such term is defined in the Thirteenth Amendment). The actual and reasonable cost of such a swap
shall be split 50/50 between Mesa and US Airways for the first 5 boxes with US Airways solely responsible for the costs of the swap with regard to the 6th box and any box thereafter. 

9.         Upon execution of this Fourteenth Amendment by both parties, the parties shall, in good faith promptly
negotiate and execute a new Capacity Purchase Agreement to replace the existing Code Share Agreement reflecting the foregoing terms and all applicable terms and conditions set forth in the Code Share Agreement and its various amendments. The purpose
of such new Capacity Purchase Agreement is to re-state and organize the previous agreement and clean up dead language for ease of administration. The parties agree to work in good faith to have such new
Capacity Purchase Agreement in place by October 31, 2014. 

10.         Miscellaneous. 

10.1        Except as set forth in this Fourteenth Amendment, all of the terms and conditions of the
Code Share Agreement shall remain in full force and effect and be applicable to this Fourteenth Amendment. 

10.2        This Fourteenth Amendment may be executed in counterparts, all of which when taken
together shall be one and the same document. 
 10.3        This Fourteenth Amendment, including the
Exhibits attached hereto, constitutes the entire agreement between the parties with respect to the subject matter hereof and supersedes all prior understandings with respect thereto. 

[Signatures Follow] 

  

					
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	 	6	  	

 IN WITNESS WHEREOF, the parties have duly executed this Fourteenth Amendment
as of the date first above written. 
  

					
	 US AIRWAYS, INC.
	 	

 
					
			
	 By:
	 	  
	 	

 
					
	 Name:
	 	  
	 	

 
					
	 Title:
	 	  
	 	

 
					
	  
 MESA AIRLINES, INC.
	 	

 
					
			
	 By:
	 	  
	 	

 
					
	 Name:
	 	  
	 	

 
					
	 Title:
	 	  
	 	

  

					
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	 	7	  	

 EXHIBIT A 

(List of CRJ-900s and Minimum Specifications) 

 

							
	Registration Number	  	Engine Type	  	Next Gen Aircraft (Y/N)  	  	Manufacture Date
	N944LR	  	CF34-8C5	  	TBD	  	TBD
	N943LR	  	CF34-8C5	  	TBD	  	TBD
	N947LR	  	CF34-8C5	  	TBD	  	TBD
	N951LR	  	CF34-8C5	  	TBD	  	TBD
	N950LR	  	CF34-8C5	  	TBD	  	TBD
	N948LR	  	CF34-8C5	  	TBD	  	TBD

 Minimum Specifications: 

All New Aircraft must meet the following minimum specifications and be otherwise appropriate for providing Flight Services pursuant to the
Code Share Agreement: 
  

	 	●	 	 Capable of being configured in dual-class configuration in accordance with US Airways’ Express First
specifications or the American Eagle Branding specifications, as applicable, consistent with the 51 Aircraft currently being operated by Mesa under the Code Share Agreement. 

	 	●	 	 Two lavatories, fore and aft, appropriate for dual-class configuration. 

	 	●	 	 Equipped with Bombardier Enhanced Performance Package (EPP) 

	 	●	 	 Capable of meeting all CAT II requirements 

	 	●	 	 ACARs functionality consistent with ACARs installed on the 9 Twelfth Amendment New Aircraft.

  

					
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	 	8	  	

 EXHIBIT B 
  

									
	 Mesa Contract Rates (Effective February 1, 2014)

					
	 (See Note 2)
	  		  		  		  	
	 Guaranteed Non-Maintenance Costs
	  	Original 38	  	      +9 (Amd. 12)	  	+4 (Amd. 13)     & +6 (Amd.14)
	 COST CATEGORY
	  	UNIT	  	CRJ 900	  	CRJ 900	  	CRJ 900
					
	 Aircraft Lease & Overhead
	  	A/C MONTH	  		  		  	
	 Ownership
	  		  	 [***]
	  	 [***]
	  	 [***]

	 Overhead
	  		  	 [***]
	  	 [***]
	  	 [***]

	 Crew RON
	  		  	 [***]
	  	 [***]
	  	 [***]

	 Total
	  		  	 [***]
	  	 [***]
	  	 [***]

					
	 Flight Crew and Maintenance
	  	BLOCK HOUR	  	 [***]
	  	 [***]
	  	 [***]

	 Note 1 Pilot
	  		  	 [***]
	  	 [***]
	  	 [***]

	 Note 1 Flight Attendant
	  		  	 [***]
	  	 [***]
	  	 [***]

	 Total
	  		  	 [***]
	  	 [***]
	  	 [***]

					
	 Dispatchers
	  	DEPARTURE	  	 [***]
	  	 [***]
	  	 [***]

					
	 Guaranteed Non-Maintenance Cost Reduction
	  	A/C/MONTH	  	 [***]
	  	 [***]
	  	 [***]

	 Rates to be applied on Amendment Effective Date ==>
	  	[***]	  	 [***]
	  	 [***]

	 Effective 10/1/2015 ==>
	  	[***]	  	 [***]
	  	 [***]

	 Aircraft Margin
	  	A/C/MONTH	  	 [***]
	  	 [***]
	  	 [***]

	 Guaranteed Maintenance Costs
	  		  		  		  	
	 	  	 	  	Original 38	  	+9 (Amd. 12)	  	+4 (Amd. 13) & +6 (Amd.14)
	 COST CATEGORY
	  	 	  	CRJ 900	  	CRJ 900	  	CRJ 900
					
	 Maintenance Cost Per A/C
	  	A/C MONTH	  		  		  	
	 MX Employees
	  		  	 [***]
	  	 [***]
	  	 [***]

	 Engine & APU Depredation
	  		  	 [***]
	  	 [***]
	  	 [***]

	 Total
	  		  	 [***]
	  	 [***]
	  	 [***]

					
	 Maintenance Base Cost
	  	BASE/MONTH	  	 [***]
	  	 [***]
	  	 [***]

	 Rent & Utilities
	  		  	 [***]
	  	 [***]
	  	 [***]

	 Personnel
	  		  	 [***]
	  	 [***]
	  	 [***]

	 Parts Depreciation
	  		  	 [***]
	  	 [***]
	  	 [***]

	 Equipment Depreciation
	  		  	 [***]
	  	 [***]
	  	 [***]

	 Total
	  		  	 [***]
	  	 [***]
	  	 [***]

					
	 Pass-through Maintenance Base
	  		  		  		  	
					
	 RON MX (TUS)
	  		  	[***]	  		  	
	 RON MX (SDF)
	  		  		  	[***]	  	
	 RON MX (TBD)1
	  		  		  		  	[***]
					
	 Maintenance Cost Per Block Hour
	  	BLOCK HOUR	  		  		  	
	 Engine MX – Contractual
	  		  	 [***]
	  	 [***]
	  	 [***]

	 Engine MX – Other
	  		  	 [***]
	  	 [***]
	  	 [***]

	 Airframe MX
	  		  	 [***]
	  	 [***]
	  	
[***]

  

					
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	 	9	  	

									
	 Total
	  		  	 [***]
	  	 [***]
	  	 [***]

 1 Payable only if both parties mutually agree that an
additional maintenance base is required 

  

					
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	 	10	  	

 Note 1 — As of the Execution Date, Pilot and Flight Attendant cost will be set at the
rates set forth above in this Exhibit B. Rates for Mesa’s pilots may be adjusted once during the remainder of the term of the Code Share Agreement to reflect an increase to the payscale for the pilots of no more than [***] ([***]) any time
after June 30, 2012 to account for any new or renegotiated collective bargaining agreement, provided that any such adjusted rate shall not be billed to US Airways until after such adjusted rate is effective and paid to the Mesa’s pilots.

 Note 2 — In addition to the Aircraft (as defined below), Mesa may, subject to the terms and conditions of this Note 2, in its
discretion and at its sole expense, arrange for and utilize substitute CRJ-900 aircraft or CRJ-200 aircraft in American Eagle/US Airways Express livery (as applicable
based on the terms of the Code Share Agreement) or neutral livery to provide the Flight Services under this Code Share Agreement during those periods, but only during those periods, when any of the Original Aircraft, the Twelfth Amendment New
Aircraft, the Thirteenth Amendment New Aircraft or the New Aircraft (collectively, “Aircraft”) may be out of service due to unforeseen and irregular maintenance requirements; provided that (i) each substitute CRJ-200 aircraft shall be approved by US Airways in writing before being used as a substitute aircraft pursuant to this Note 2, and (ii) Mesa may only utilize regional jet aircraft other than CRJ-900 or CRJ-200 aircraft to the extent that US Airways has permitted such use in advance in writing. For clarification purposes only, Mesa may operate such a substitute
aircraft in US Airways Express or neutral livery in lieu of an Aircraft in US Airways Express livery and Mesa may operate such a substitute aircraft in American Eagle or neutral livery in lieu of an Aircraft in American Eagle livery, but may not
operate a substitute aircraft in US Airways Express livery in lieu of an Aircraft in American Eagle livery or a substitute aircraft in American Eagle livery in lieu of an Aircraft in US Airways Express livery, without the prior written consent of US
Airways. 
  

	 	a)	 Notwithstanding anything in the Code Share Agreement to the contrary, and assuming approval is granted, usage
of substitute CRJ-200 aircraft shall be paid as follows: 

  

	 	(1)	 Rates paid for operation of this aircraft will be $[***] per block hour and $[***] per departure plus any fuel
costs associated with these substitute operations. Such rate shall be reduced by [***] after the 24th Flight of such aircraft in a calendar month, reduced by [***] after the 32nd Flight of the calendar month, and [***] after the 40th Flight of the
calendar month. 

  

	 	(2)	 In addition, the amount paid to Mesa will be further adjusted by any interrupted trip or passenger
inconvenience costs to include, without limitation, such things as meals and hotels for displaced passengers, as well as an amount of $[***] per passenger downgraded from first class to coach class. 

 

	 	b)	 If a substitute aircraft shall be utilized for more than two (2) consecutive days, Mesa and US Airways
shall mutually agree upon the route that shall be covered by the substitute aircraft. 

  

	 	c)	 For clarification purposes only, if a substitute aircraft is used in accordance with the terms hereof, the
applicable provisions of the Code Share Agreement shall also apply to the Flight Services operated by such substitute aircraft, including, without limitation, if the respective Flight is not operated for any reason. 

  

					
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	 	11	  	

	 	d)	 The provisions of this Note 2 replace Section 9(d)(ii) of the Tenth Amendment in its entirety.

  

					
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	 	12

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