Document:

EX-10.3

 Exhibit 10.3 
 EXECUTION VERSION 
 JOINDER AGREEMENT 

THIS JOINDER AGREEMENT dated as of December 19, 2013 (this “Agreement”), is entered into between
AEROSONIC LLC, a Delaware limited liability company, AVIONICS SPECIALTIES, INC., a Virginia corporation, AIRBORNE GLOBAL, INC., a Delaware corporation, AIRBORNE HOLDINGS, INC., a Delaware corporation, AIRBORNE ACQUISITION, INC., a Delaware
corporation, AIRBORNE SYSTEMS NA INC., a Delaware corporation, AIRBORNE SYSTEMS NORTH AMERICA INC., a Delaware corporation, AIRBORNE SYSTEMS NORTH AMERICA OF CA INC., a Delaware corporation, and AIRBORNE SYSTEMS NORTH AMERICA OF NJ INC., a New
Jersey corporation (each, a “New Subsidiary” and collectively, the “New Subsidiaries”), and CREDIT SUISSE AG, as administrative agent and collateral agent (in such capacities, the “Agent”), under
that certain Amended and Restated Credit Agreement dated as of February 28, 2013 (as the same may be further amended, supplemented or otherwise modified from time to time, the “Credit Agreement”), among TransDigm Inc., a
Delaware corporation (the “Borrower”), TransDigm Group Incorporated, a Delaware corporation, the Subsidiaries of the Borrower from time to time party thereto, the Lenders from time to time party thereto and the Agent. All
capitalized terms used herein and not otherwise defined shall have the meanings set forth in the Credit Agreement. 
 Each of the New Subsidiaries and the Agent, for the benefit of the Lenders, hereby agree as follows: 
 1. Each New Subsidiary hereby acknowledges, agrees and confirms that, by its execution of this Agreement, such New Subsidiary will be deemed to be a Loan Party under the Credit Agreement and a Subsidiary
Guarantor for all purposes of the Credit Agreement and shall have all of the obligations of a Loan Party and a Subsidiary Guarantor thereunder as if it had executed the Credit Agreement. Each New Subsidiary hereby ratifies, as of the date hereof,
and agrees to be bound by, all of the terms, provisions and conditions contained in the Credit Agreement, including without limitation (a) all of the representations and warranties of the Loan Parties set forth in Article III of the Credit
Agreement (to the extent made or deemed made on or after the effective date hereof), (b) all of the covenants set forth in Articles V and VI of the Credit Agreement and (c) all of the guaranty obligations set forth in the Guarantee and
Collateral Agreement. Without limiting the generality of the foregoing terms of this paragraph 1, each New Subsidiary, subject to the limitations set forth in the Guarantee and Collateral Agreement, hereby absolutely and unconditionally guarantees,
jointly and severally with the other Guarantors, to the Agent and the Lenders, the prompt payment of the Additional Obligations in full when due (whether at stated maturity, upon acceleration or otherwise) to the extent of and in accordance with
Guarantee and Collateral Agreement. 
 2. If required, each New Subsidiary is, simultaneously with the execution
of this Agreement, executing and delivering such Collateral Documents (and such other documents and instruments) as reasonably requested by the Agent in accordance with the Credit Agreement. 

3. Each New Subsidiary hereby waives acceptance by the Agent and the Lenders of the guaranty by such New Subsidiary upon
the execution of this Agreement by such New Subsidiary. 
 4. This Agreement may be executed in any number of
counterparts, each of which when so executed and delivered shall be an original, but all of which shall constitute one and the same instrument. 

 5. THIS AGREEMENT AND THE RIGHTS AND OBLIGATIONS OF THE PARTIES HEREUNDER
SHALL BE CONSTRUED IN ACCORDANCE WITH AND GOVERNED BY THE LAWS OF THE STATE OF NEW YORK. 
 [Remainder of page left intentionally
blank] 

 IN WITNESS WHEREOF, each New Subsidiary has caused this Agreement to be duly executed by its
authorized officer, and the Agent, for the benefit of the Lenders, has caused the same to be accepted by its authorized officer, as of the day and year first above written. 

 

					
	 AEROSONIC LLC

AVIONICS SPECIALTIES, INC.
 AIRBORNE GLOBAL,
INC.
 AIRBORNE HOLDINGS, INC.
 AIRBORNE
ACQUISITION, INC.
 AIRBORNE SYSTEMS NA INC.
 AIRBORNE SYSTEMS NORTH AMERICA INC.
 AIRBORNE SYSTEMS NORTH AMERICA OF CA INC.

AIRBORNE SYSTEMS NORTH AMERICA OF NJ INC.

		
	by	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Secretary and Treasurer

 Joinder Agreement 

 
					
	CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Agent
		
	by	 	 /s/ Kevin Buddhdew

		 	Name:	 	Kevin Buddhdew
		 	Title:	 	Authorized Signatory
		
	by	 	 /s/ Ryan Long

		 	Name:	 	Ryan Long
		 	Title:	 	Authorized Signatory

 Joinder AgreementEX-10.4

 Exhibit 10.4 
 EXECUTION VERSION 
 SUPPLEMENT NO. 3 dated as of December 19, 2013 (this
“Supplement”), to the Guarantee and Collateral Agreement dated as of June 23, 2006, as amended and restated as of December 6, 2010, February 14, 2011, and February 28, 2013 (as further amended, restated,
supplemented or otherwise modified from time to time, the “Guarantee and Collateral Agreement”), among TRANSDIGM INC., a Delaware corporation (the “Borrower”), TRANSDIGM GROUP INCORPORATED, a Delaware corporation
(“Holdings”), each subsidiary of the Borrower listed on Schedule I thereto (each such subsidiary individually a “Subsidiary Guarantor” and collectively, the “Subsidiary Guarantors”; the Subsidiary
Guarantors, Holdings and the Borrower are referred to collectively herein as the “Grantors”) and CREDIT SUISSE AG, as collateral agent for the Secured Parties and as administrative agent (in such capacities, the
“Agent”). 
 A. Reference is made to the Amended and Restated Credit Agreement dated as of February 28,
2013 (as further amended, supplemented, or otherwise modified from time to time, the “Credit Agreement”), among the Borrower, Holdings, each subsidiary of the Borrower from time to time party thereto, the lenders from time to time
party thereto (the “Lenders”) and the Agent. 
 B. Capitalized terms used herein and not otherwise defined
herein shall have the meanings assigned to such terms in the Credit Agreement or the Guarantee and Collateral Agreement, as the context may require. 
 C. The Grantors have entered into the Guarantee and Collateral Agreement in order to induce the Lenders to make Loans and the Issuing Banks to issue Letters of Credit. Section 7.16 of the Guarantee
and Collateral Agreement provides that additional Domestic Subsidiaries of the Loan Parties may become Subsidiary Guarantors and Grantors under the Guarantee and Collateral Agreement by execution and delivery of an instrument in the form of this
Supplement. Each of the undersigned Subsidiaries (each, a “New Subsidiary” and collectively, the “New Subsidiaries”) is executing this Supplement in accordance with the requirements of the Credit Agreement to become
a Subsidiary Guarantor and a Grantor under the Guarantee and Collateral Agreement in order to induce the Lenders to make additional Loans and the Issuing Banks to issue additional Letters of Credit, and as consideration for Loans previously made and
Letters of Credit previously issued. 
 Accordingly, the Agent and the New Subsidiaries agree as follows: 

SECTION 1. In accordance with Section 7.16 of the Guarantee and Collateral Agreement, each New Subsidiary by its signature below
becomes a Grantor and Subsidiary Guarantor under the Guarantee and Collateral Agreement with the same force and effect as if originally named therein as a Grantor and Subsidiary Guarantor, and each New Subsidiary hereby (a) agrees to all the
terms and provisions of the Guarantee and Collateral Agreement applicable to it as a Grantor and Subsidiary Guarantor thereunder and (b) represents and warrants that the representations and warranties made by it as a Grantor and Subsidiary
Guarantor thereunder are true and correct in all material respects on and as of the date hereof (except for any representation or warranty that is limited by its terms to an earlier specified date). In furtherance of the foregoing, each New
Subsidiary, as security for the payment and performance in full of the Secured Obligations (as defined in the Guarantee and Collateral Agreement), does 

 
hereby create and grant to the Agent, its successors and assigns, for the ratable benefit of the Secured Parties, their successors and assigns, a security interest in and lien on all of such New
Subsidiary’s right, title and interest in and to the Collateral (as defined in the Guarantee and Collateral Agreement) of such New Subsidiary. Each reference to a “Grantor” or a “Subsidiary Guarantor” in the
Guarantee and Collateral Agreement shall be deemed to include each New Subsidiary. The Guarantee and Collateral Agreement is hereby incorporated herein by reference. 
 SECTION 2. Each New Subsidiary represents and warrants to the Agent and the other Secured Parties that this Supplement has been duly authorized, executed and delivered by it and constitutes its legal,
valid and binding obligation, enforceable against it in accordance with its terms subject to applicable bankruptcy, insolvency or similar laws affecting creditors’ rights generally and to general principles of equity. 

SECTION 3. This Supplement may be executed in counterparts (and by different parties hereto on different counterparts), each of which
shall constitute an original, but all of which when taken together shall constitute a single contract. This Supplement shall become effective when the Agent shall have received counterparts of this Supplement that, when taken together, bear the
signatures of the New Subsidiaries and the Agent. Delivery of an executed signature page to this Supplement by facsimile or other electronic transmission shall be as effective as delivery of a manually signed counterpart of this Supplement.

 SECTION 4. Each New Subsidiary hereby represents and warrants that (a) set forth on Schedule I attached hereto is a true
and correct schedule of all leased and owned real property of such New Subsidiary and each other location where any Collateral of such New Subsidiary is stored or otherwise located with a value in excess of $300,000 for each such location, set forth
on Schedule II is a true and correct schedule of the Pledged Collateral of such New Subsidiary and set forth on Schedule III is a true and correct schedule of the Intellectual Property of such New Subsidiary, and (b) set forth under
its signature hereto, is the true and correct legal name of such New Subsidiary, its jurisdiction of formation and the location of its chief executive office. 
 SECTION 5. Except as expressly supplemented hereby, the Guarantee and Collateral Agreement shall remain in full force and effect. 
 SECTION 6. THIS SUPPLEMENT SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK. 
 SECTION 7. In case any one or more of the provisions contained in this Supplement should be held invalid, illegal or unenforceable in any respect, the validity, legality and enforceability of the
remaining provisions contained herein and in the Guarantee and Collateral Agreement shall not in any way be affected or impaired thereby (it being understood that the invalidity of a particular provision in a particular jurisdiction shall not in and
of itself affect the validity of such provision in any other jurisdiction). The parties hereto shall endeavor in good-faith negotiations to replace the invalid, illegal or unenforceable provisions with valid provisions the economic effect of which
comes as close as possible to that of the invalid, illegal or unenforceable provisions. 

 SECTION 8. All communications and notices hereunder shall be in writing and given as
provided in Section 7.01 of the Guarantee and Collateral Agreement. All communications and notices hereunder to any New Subsidiary shall be given to it at the address set forth under its signature below. 

SECTION 9. Each New Subsidiary agrees to reimburse the Agent for its reasonable out-of-pocket expenses in connection with this
Supplement, including the reasonable fees, other charges and disbursements of counsel for the Agent. 
 [Signature pages to
follow] 

 IN WITNESS WHEREOF, the New Subsidiaries and the Agent have duly executed this Supplement to
the Guarantee and Collateral Agreement as of the day and year first above written. 
  

					
	AEROSONIC LLC
		
	by	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Secretary and Treasurer
		 	Address:	 	 1212 North Hercules Avenue

Clearwater, Florida 33765

		 	Legal Name: Aerosonic Corporation
		 	Jurisdiction of Formation: Delaware
		 	Location of Chief Executive Office:
		 		 	 1212 North Hercules Avenue

Clearwater, Florida 33765

	
	AVIONICS SPECIALTIES, INC.
		
	by	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Secretary and Treasurer
		 	Address:	 	 1212 North Hercules Avenue

Clearwater, Florida 33765

		 	Legal Name: Avionics Specialties, Inc.
		 	Jurisdiction of Formation: Virginia
		 	Location of Chief Executive Office:
		 		 	 1212 North Hercules Avenue

Clearwater, Florida 33765

	
	AIRBORNE GLOBAL, INC.
		
	by	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Secretary and Treasurer
		 	Address:	 	 1301 E. 9th Street, Suite 3710

Cleveland, OH 44114

		 	Legal Name: Airborne Global, Inc.
		 	Jurisdiction of Formation: Delaware
		 	Location of Chief Executive Office:
		 		 	 1301 E. 9th Street, Suite 3710

Cleveland, OH 44114

 
					
	AIRBORNE HOLDINGS, INC.
		
	by	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Secretary and Treasurer
		 	Address:	 	 1301 E. 9th Street, Suite 3710

Cleveland, OH 44114

		 	Legal Name: Airborne Holdings, Inc.
		 	Jurisdiction of Formation: Delaware
		 	Location of Chief Executive Office:
		 		 	 1301 E. 9th Street, Suite 3710

Cleveland, OH 44114

	
	AIRBORNE ACQUISITION, INC.
		
	by	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Secretary and Treasurer
		 	Address:	 	 1301 E. 9th Street, Suite 3710

Cleveland, OH 44114

		 	Legal Name: Airborne Acquisition, Inc.
		 	Jurisdiction of Formation: Delaware
		 	Location of Chief Executive Office:
		 		 	 1301 E. 9th Street, Suite 3710

Cleveland, OH 44114

	
	AIRBORNE SYSTEMS NA INC.
		
	by	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Secretary and Treasurer
		 	Address:	 	 1301 E. 9th Street, Suite 3710

Cleveland, OH 44114

		 	Legal Name: Airborne Systems NA Inc.
		 	Jurisdiction of Formation: Delaware
		 	Location of Chief Executive Office:
		 		 	 1301 E. 9th Street, Suite 3710

Cleveland, OH 44114

 
					
	AIRBORNE SYSTEMS NORTH AMERICA INC.
		
	by	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Secretary and Treasurer
		 	Address:	 	 1301 E. 9th Street, Suite 3710

Cleveland, OH 44114

		 	 Legal Name: Airborne Systems North America Inc.

		 	Jurisdiction of Formation: Delaware
		 	Location of Chief Executive Office:
		 		 	 1301 E. 9th Street, Suite 3710

Cleveland, OH 44114

	
	AIRBORNE SYSTEMS NORTH AMERICA OF CA INC.
		
	by	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Secretary and Treasurer
		 	Address:	 	 3701 West Warner Avenue
 Santa
Ana, California

		 	 Legal Name: Airborne Systems North America of CA Inc.

		 	Jurisdiction of Formation: Delaware
		 	Location of Chief Executive Office:
		 		 	 3701 West Warner Avenue
 Santa
Ana, California

 
			
	AIRBORNE SYSTEMS NORTH AMERICA OF NJ INC.
	
	 /s/ Gregory Rufus

	Name:	 	Gregory Rufus
	Title:	 	Secretary and Treasurer
	Address:	 	5800 Magnolia Avenue
		 	Pennsauken, New Jersey 08109
	 Legal Name: Airborne Systems North America of NJ Inc.

	Jurisdiction of Formation: New Jersey
	Location of Chief Executive Office:
		 	5800 Magnolia Avenue
		 	Pennsauken, New Jersey 08109

 
					
	CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Agent
		
	by	 	 /s/ Kevin Buddhdew

		 	Name:	 	Kevin Buddhdew
		 	Title:	 	Authorized Signatory
		
	by	 	 /s/ Ryan Long

		 	Name:	 	Ryan Long
		 	Title:	 	Authorized Signatory

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