Document:

Indenture dated as of October 6,2009 among TransDigm Inc.

 Exhibit 4.1 
 EXECUTION COPY 
  
  
 TRANSDIGM INC., 
 TRANSDIGM GROUP INCORPORATED, 
 THE GUARANTORS named herein 
 and 
 THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., as Trustee 
 INDENTURE 
 Dated as of October 6, 2009 
 7 3/
4% Senior Subordinated Notes due 2014 
  
  

 CROSS-REFERENCE TABLE* 
  

					
	 Trust Indenture Act Section
	  	Indenture
Section	  	  
	 310 (a)(1)
	  	7.10	  	
	       (a)(2)	  	7.10	  	
	       (a)(3)	  	N.A	  	
	       (a)(4)	  	N.A	  	
	       (a)(5)	  	7.10	  	
	       (b)	  	7.10	  	
	       (c)	  	N.A	  	
	 311 (a)
	  	7.11	  	
	       (b)	  	7.11	  	
	       (c)	  	N.A	  	
	 312 (a)
	  	2.05	  	
	       (b)	  	13.03	  	
	       (c)	  	13.03	  	
	 313 (a)
	  	7.06	  	
	       (b)(2)	  	7.06; 7.07	  	
	       (c)	  	7.06;13.02	  	
	       (d)	  	7.06	  	
	 314 (a)
	  	4.03	  	
	       (a)(4)	  	13.05	  	
	       (b)	  	N.A.	  	
	       (c)(1)	  	N.A.	  	
	       (c)(2)	  	N.A	  	
	       (c)(3)	  	N.A	  	
	       (d)	  	N.A	  	
	       (e)	  	13.05	  	
	       (f)	  	N.A	  	
	 315 (a)
	  	N.A	  	
	       (b)	  	N.A	  	
	       (c)	  	N.A	  	
	       (d)	  	N.A	  	
	       (e)	  	N.A	  	
	 316 (a)(1)(A)
	  	N.A	  	
	       (a)(1)(B)	  	N.A	  	
	       (a)(2)	  	N.A	  	
	       (b)	  	N.A	  	
	 317 (a)(1)
	  	N.A	  	
	       (a)(2)	  	N.A	  	
	 318 (a)
	  	N.A	  	
	       (b)	  	N.A	  	
	       (c)	  	13.01	  	

 N.A. means not applicable. 

	*	This Cross-Reference Table is not part of the Indenture. 

  

 -i- 

 Table of Contents 
  

					
	 	  	 	  	Page
	
	ARTICLE I
	
	Definitions and Incorporation by Reference
			
	 SECTION 1.01.
	  	Definitions.	  	1
	 SECTION 1.02.
	  	Other Definitions.	  	24
	 SECTION 1.03.
	  	Trust Indenture Act Definitions.	  	25
	 SECTION 1.04.
	  	Rules of Construction.	  	25
	
	ARTICLE II
	
	THE NOTES
			
	 SECTION 2.01.
	  	Form and Dating.	  	26
	 SECTION 2.02.
	  	Execution and Authentication.	  	26
	 SECTION 2.03.
	  	Registrar and Paying Agent.	  	27
	 SECTION 2.04.
	  	Paying Agent to Hold Money in Trust.	  	28
	 SECTION 2.05.
	  	Holder Lists.	  	28
	 SECTION 2.06.
	  	Transfer and Exchange.	  	28
	 SECTION 2.07.
	  	Replacement Notes.	  	30
	 SECTION 2.08.
	  	Outstanding Notes.	  	30
	 SECTION 2.09.
	  	Treasury Notes.	  	30
	 SECTION 2.10.
	  	Temporary Notes.	  	31
	 SECTION 2.11.
	  	Cancellation.	  	31
	 SECTION 2.12.
	  	Defaulted Interest.	  	31
	 SECTION 2.13.
	  	CUSIP or ISIN Numbers.	  	31
	 SECTION 2.14.
	  	Issuance of Additional Notes.	  	32
	
	ARTICLE III
	
	Redemption And Prepayment
			
	 SECTION 3.01.
	  	Notices to Trustee.	  	32
	 SECTION 3.02.
	  	Selection of Notes to Be Redeemed.	  	32
	 SECTION 3.03.
	  	Notice of Redemption.	  	33
	 SECTION 3.04.
	  	Effect of Notice of Redemption.	  	34
	 SECTION 3.05.
	  	Deposit of Redemption Price.	  	34
	 SECTION 3.06.
	  	Notes Redeemed in Part.	  	34
	 SECTION 3.07.
	  	Optional Redemption.	  	34
	 SECTION 3.08.
	  	Mandatory Redemption; Open Market Purchases.	  	35
	 SECTION 3.09.
	  	Offer to Purchase by Application of Net Proceeds Offer Amount.	  	35

  

 -ii- 

					
	
	 ARTICLE IV

	
	COVENANTS
			
	 SECTION 4.01.
	  	Payment of Notes.	  	37
	 SECTION 4.02.
	  	Maintenance of Office or Agency.	  	37
	 SECTION 4.03.
	  	Reports.	  	38
	 SECTION 4.04.
	  	Compliance Certificate.	  	39
	 SECTION 4.05.
	  	[Intentionally Omitted].	  	39
	 SECTION 4.06.
	  	Stay, Extension and Usury Laws.	  	39
	 SECTION 4.07.
	  	Restricted Payments.	  	40
	 SECTION 4.08.
	  	Dividend and Other Payment Restrictions Affecting Subsidiaries.	  	44
	 SECTION 4.09.
	  	Incurrence of Indebtedness.	  	45
	 SECTION 4.10.
	  	Asset Sales.	  	46
	 SECTION 4.11.
	  	Transactions with Affiliates.	  	48
	 SECTION 4.12.
	  	Liens.	  	49
	 SECTION 4.13.
	  	Conduct of Business.	  	49
	 SECTION 4.14.
	  	Corporate Existence.	  	50
	 SECTION 4.15.
	  	Offer to Repurchase upon Change of Control.	  	50
	 SECTION 4.16.
	  	No Senior Subordinated Debt.	  	51
	 SECTION 4.17.
	  	Additional Guarantees.	  	51
	 SECTION 4.18.
	  	Limitation on Preferred Stock of Restricted Subsidiaries.	  	52
	 SECTION 4.19.
	  	Suspension of Covenants.	  	52
	
	ARTICLE V
	
	SUCCESSORS
			
	 SECTION 5.01.
	  	Merger, Consolidation or Sale of Assets.	  	54
	 SECTION 5.02.
	  	Successor Corporation Substituted.	  	57
	
	ARTICLE VI
	
	DEFAULTS AND REMEDIES
			
	 SECTION 6.01.
	  	Events of Default.	  	57
	 SECTION 6.02.
	  	Acceleration.	  	58
	 SECTION 6.03.
	  	Other Remedies.	  	59
	 SECTION 6.04.
	  	Waiver of Past Defaults.	  	59
	 SECTION 6.05.
	  	Control by Majority.	  	59
	 SECTION 6.06.
	  	Limitation on Suits.	  	60
	 SECTION 6.07.
	  	Rights of Holders of Notes to Receive Payment.	  	60
	 SECTION 6.08.
	  	Collection Suit by Trustee.	  	60
	 SECTION 6.09.
	  	Trustee May File Proofs of Claim.	  	60
	 SECTION 6.10.
	  	Priorities.	  	61
	 SECTION 6.11.
	  	Undertaking for Costs.	  	61

  

 -iii- 

					
	
	 ARTICLE VII

	
	TRUSTEE
			
	 SECTION 7.01.
	  	Duties of Trustee.	  	62
	 SECTION 7.02.
	  	Rights of Trustee.	  	63
	 SECTION 7.03.
	  	Individual Rights of Trustee.	  	64
	 SECTION 7.04.
	  	Trustee’s Disclaimer.	  	64
	 SECTION 7.05.
	  	Notice of Defaults.	  	65
	 SECTION 7.06.
	  	Reports by Trustee to Holders of the Notes.	  	65
	 SECTION 7.07.
	  	Compensation and Indemnity.	  	65
	 SECTION 7.08.
	  	Replacement of Trustee.	  	66
	 SECTION 7.09.
	  	Successor Trustee by Merger, etc.	  	67
	 SECTION 7.10.
	  	Eligibility; Disqualification.	  	67
	 SECTION 7.11.
	  	Preferential Collection of Claims Against Company.	  	68
	
	ARTICLE VIII
	
	Legal Defeasance and Covenant Defeasance Section
			
	 SECTION 8.01.
	  	Option to Effect Legal Defeasance or Covenant Defeasance.	  	68
	 SECTION 8.02.
	  	Legal Defeasance and Discharge.	  	68
	 SECTION 8.03.
	  	Covenant Defeasance.	  	68
	 SECTION 8.04.
	  	Conditions to Legal or Covenant Defeasance.	  	69
	 SECTION 8.05.
	  	Deposited Money and Government Securities to Be Held in Trust; Other Miscellaneous Provisions.	  	70
	 SECTION 8.06.
	  	Satisfaction and Discharge.	  	71
	 SECTION 8.07.
	  	Repayment to Company.	  	71
	 SECTION 8.08.
	  	Reinstatement.	  	72
	 SECTION 8.09.
	  	Survival.	  	72
	
	ARTICLE IX
	
	Amendment, Supplement and Waiver
			
	 SECTION 9.01.
	  	Without Consent of Holders of Notes.	  	72
	 SECTION 9.02.
	  	With Consent of Holders of Notes.	  	73
	 SECTION 9.03.
	  	Compliance with Trust Indenture Act.	  	75
	 SECTION 9.04.
	  	Revocation and Effect of Consents.	  	75
	 SECTION 9.05.
	  	Notation on, or Exchange of, Notes.	  	75
	 SECTION 9.06.
	  	Trustee to Sign Amendments, etc.	  	75
	
	ARTICLE X
	
	SUBORDINATION
			
	 SECTION 10.01.
	  	Agreement to Subordinate.	  	76

  

 -iv- 

					
	 SECTION 10.02.
	  	Liquidation, Dissolution, Bankruptcy.	  	76
	 SECTION 10.03.
	  	Default on Senior Debt of the Company.	  	76
	 SECTION 10.04.
	  	Acceleration of Payment of Notes.	  	77
	 SECTION 10.05.
	  	When Distribution Must Be Paid Over.	  	77
	 SECTION 10.06.
	  	Subrogation.	  	78
	 SECTION 10.07.
	  	Relative Rights.	  	78
	 SECTION 10.08.
	  	Subordination May Not Be Impaired by Company.	  	78
	 SECTION 10.09.
	  	Rights of Trustee and Paying Agent.	  	78
	 SECTION 10.10.
	  	Distribution or Notice to Representative.	  	79
	 SECTION 10.11.
	  	Not to Prevent Events of Default or Limit Right to Accelerate.	  	79
	 SECTION 10.12.
	  	Trust Moneys Not Subordinated.	  	79
	 SECTION 10.13.
	  	Trustee Entitled to Rely.	  	79
	 SECTION 10.14.
	  	Trustee to Effectuate Subordination.	  	80
	 SECTION 10.15.
	  	Trustee Not Fiduciary for Holders of Senior Debt of the Company.	  	80
	 SECTION 10.16.
	  	Reliance by Holders of Senior Debt of the Company on Subordination Provisions.	  	80
	
	ARTICLE XI
	
	Guarantees
			
	 SECTION 11.01.
	  	Guarantees.	  	80
	 SECTION 11.02.
	  	Limitation on Liability.	  	82
	 SECTION 11.03.
	  	Successors and Assigns.	  	82
	 SECTION 11.04.
	  	No Waiver.	  	82
	 SECTION 11.05.
	  	Modification.	  	83
	 SECTION 11.06.
	  	[Intentionally Omitted].	  	83
	 SECTION 11.07.
	  	Release of Guarantor.	  	83
	 SECTION 11.08.
	  	Contribution.	  	83
	
	ARTICLE XII
	
	SUBORDINATION OF GUARANTEES
			
	 SECTION 12.01.
	  	Agreement to Subordinate.	  	84
	 SECTION 12.02.
	  	Liquidation, Dissolution, Bankruptcy.	  	84
	 SECTION 12.03.
	  	Default on Senior Debt of Guarantor.	  	84
	 SECTION 12.04.
	  	Demand for Payment.	  	85
	 SECTION 12.05.
	  	When Distribution Must Be Paid Over.	  	86
	 SECTION 12.06.
	  	Subrogation.	  	86
	 SECTION 12.07.
	  	Relative Rights.	  	86
	 SECTION 12.08.
	  	Subordination May Not Be Impaired by Company.	  	86
	 SECTION 12.09.
	  	Rights of Trustee and Paying Agent.	  	86
	 SECTION 12.10.
	  	Distribution or Notice to Representative.	  	87
	 SECTION 12.11.
	  	Article 12 Not to Prevent Events of Default or Limit Right to Demand Payment.	  	87
	 SECTION 12.12.
	  	Trustee Entitled to Rely.	  	87

  

 -v- 

					
	 SECTION 12.13.
	  	Trustee to Effectuate Subordination.	  	88
	 SECTION 12.14.
	  	Trustee Not Fiduciary for Holders of Senior Debt of Guarantor.	  	88
	 SECTION 12.15.
	  	Reliance by Holders of Senior Debt of Holdings or Guarantors on Subordination Provisions.	  	88
	
	ARTICLE XIII
	
	MISCELLANEOUS
			
	 SECTION 13.01.
	  	Trust Indenture Act Controls.	  	88
	 SECTION 13.02.
	  	Notices.	  	89
	 SECTION 13.03.
	  	Communication by Holders of Notes with Other Holders of Notes.	  	90
	 SECTION 13.04.
	  	Certificate and Opinion as to Conditions Precedent.	  	90
	 SECTION 13.05.
	  	Statements Required in Certificate or Opinion.	  	91
	 SECTION 13.06.
	  	Rules by Trustee and Agents.	  	91
	 SECTION 13.07.
	  	No Personal Liability of Directors, Officers, Employees and Stockholders.	  	91
	 SECTION 13.08.
	  	Governing Law.	  	91
	 SECTION 13.09.
	  	No Adverse Interpretation of Other Agreements.	  	92
	 SECTION 13.10.
	  	Successors.	  	92
	 SECTION 13.11.
	  	Severability.	  	92
	 SECTION 13.12.
	  	Counterpart Originals.	  	92
	 SECTION 13.13.
	  	Table of Contents, Headings, etc.	  	92
	 SECTION 13.14.
	  	Waiver of Trial by Jury.	  	92

 APPENDIX AND EXHIBITS 
 RULE 144A/REGULATION S APPENDIX 
 Exhibit A            FORM OF INITIAL NOTE 
 Exhibit B            FORM OF EXCHANGE NOTE 
  

 -vi- 

 INDENTURE dated as of October 6, 2009 among TransDigm Inc., a Delaware
corporation (the “Company”), TransDigm Group Incorporated, a Delaware corporation (“Holdings”), the Guarantors (as herein defined) and The Bank of New York Mellon Trust Company, N.A., a national banking
association, as trustee (the “Trustee”). 
 The Company, Holdings, the Guarantors and the Trustee agree as
follows for the benefit of each other and for the equal and ratable benefit of the Holders (as herein defined): 
 ARTICLE I

 Definitions and Incorporation by Reference 
 SECTION 1.01. Definitions. 
 “2006 Notes” means the Company’s 7 3/4% Senior Subordinated Notes due 2014 issued under the Indenture dated June 23, 2006, among the Company, Holdings and the subsidiary guarantors from time to time party thereto
and The Bank of New York Mellon Trust Company, N.A., as Trustee. 
 “Acquired Indebtedness” means
Indebtedness of a Person or any of its Subsidiaries existing at the time such Person becomes a Restricted Subsidiary of the Company or at the time it merges or consolidates with or into the Company or any of its Subsidiaries or that is assumed in
connection with the acquisition of assets from such Person, including Indebtedness incurred by such Person in connection with, or in anticipation or contemplation of, such Person becoming a Restricted Subsidiary of the Company or such acquisition,
merger or consolidation. 
 “Additional Interest” means all additional interest then owing pursuant to
Section 6 of the Registration Rights Agreement. 
 “Additional Notes” means, subject
to the Company’s compliance with Section 4.03, 7 3/4% Senior Subordinated Notes due 2014 issued from time to time after the Issue Date under the terms of this Indenture (other than pursuant to Section 2.06, 2.07, 2.09 or 3.06 of this Indenture and other than Exchange Notes or Private
Exchange Notes issued pursuant to an exchange offer for other Notes outstanding under this Indenture). 
 “Affiliate” means, with respect to any specified Person, any other Person who directly or indirectly through one or more intermediaries controls, or is controlled by, or is under common control with, such specified Person.
The term “control” means the possession, directly or indirectly, of the power to direct or cause the direction of the management and policies of a Person, whether through the ownership of voting securities, by contract or otherwise; and
the terms “controlling” and “controlled” have meanings correlative of the foregoing. Notwithstanding the foregoing, no Person (other than the Company or any Subsidiary of the Company) in whom a Securitization Entity makes an
Investment in connection with a Qualified Securitization Transaction shall be deemed to be an Affiliate of the Company or any of its Subsidiaries solely by reason of such investment. 

 “Asset Acquisition” means (a) an Investment by the Company or any
Restricted Subsidiary of the Company in any other Person pursuant to which such Person shall become a Restricted Subsidiary of the Company, or shall be merged with or into the Company or any Restricted Subsidiary of the Company or (b) the
acquisition by the Company or any Restricted Subsidiary of the Company of the assets of any Person (other than a Restricted Subsidiary of the Company) other than in the ordinary course of business. 
 “Asset Sale” means any direct or indirect sale, issuance, conveyance, transfer, lease (other than operating leases entered
into in the ordinary course of business), assignment or other transfer for value by the Company or any of its Restricted Subsidiaries (including any Sale and Leaseback Transaction) to any Person other than the Company or a Restricted Subsidiary of
the Company of: (a) any Capital Stock of any Restricted Subsidiary of the Company or (b) any other property or assets of the Company or any Restricted Subsidiary of the Company other than in the ordinary course of business;
provided, however, that Asset Sales or other dispositions shall not include (i) a transaction or series of related transactions for which the Company or its Restricted Subsidiaries receive aggregate consideration of less than $1.0
million, (ii) the sale, lease, conveyance, disposition or other transfer of all or substantially all of the assets of the Company as permitted by Section 5.01 hereof or any disposition that constitutes a Change of Control, (iii) the
sale or discount, in each case without recourse, of accounts receivable arising in the ordinary course of business, but only in connection with the compromise or collection thereof, (iv) disposals or replacements of obsolete equipment in the
ordinary course of business, (v) the sale, lease, conveyance, disposition or other transfer by the Company or any Restricted Subsidiary of assets or property to one or more Restricted Subsidiaries in connection with Investments permitted by
Section 4.07 hereof or pursuant to any Permitted Investment, (vi) sales of accounts receivable, equipment and related assets (including contract rights) of the type specified in the definition of “Qualified Securitization
Transaction” to a Securitization Entity for the fair market value thereof, including cash in an amount at least equal to 75% of the fair market value thereof as determined in accordance with GAAP (for the purposes of this clause (vi), Purchase
Money Notes shall be deemed to be cash), (vii) dispositions of cash or Cash Equivalents; and (viii) the creation of a Lien (but not the sale or other disposition of the property subject to such Lien). 
 “Bank Indebtedness” means all Obligations pursuant to the Credit Facility. 
 “Bankruptcy Law” means Title 11, U.S. Code or any similar federal or state law for the relief of debtors. 
 “Board of Directors” means: (i) with respect to a corporation, the board of directors of the corporation,
(ii) with respect to a partnership, the board of directors of the general partnership, and (iii) with respect to any other Person, the board or committee of such Person serving a similar function. 
 “Board Resolution” means, with respect to any Person, a copy of a resolution certified by the Secretary or an Assistant
Secretary of such Person to have been duly adopted by the Board of Directors of such Person and to be in full force and effect on the date of such certification. 
  

 2 

 “Business Day” means any day other than a Legal Holiday. 
 “Capital Stock” means (i) with respect to any Person that is a corporation, any and all shares, interests,
participations or other equivalents (however designated and whether or not voting) of corporate stock, including each class of Common Stock and Preferred Stock, of such Person and (ii) with respect to any Person that is not a corporation, any
and all partnership or other equity interests of such Person. 
 “Capitalized Lease Obligations” means, as to
any Person, the obligations of such Person under a lease that are required to be classified and accounted for as capital lease obligations under GAAP and, for purposes of this definition, the amount of such obligations at any date shall be the
capitalized amount of such obligations at such date, determined in accordance with GAAP. 
 “Cash Equivalents”
means: (i) marketable direct obligations issued by, or unconditionally guaranteed by, the United States Government or issued by any agency thereof and backed by the full faith and credit of the United States of America, in each case maturing
within one year from the date of acquisition thereof; (ii) marketable direct obligations issued by any State of the United States of America or any political subdivision of any such State or any public instrumentality thereof maturing within
one year from the date of acquisition thereof and, at the time of acquisition, having one of the three highest ratings obtainable from either S&P or Moody’s; (iii) commercial paper maturing no more than one year from the date of
creation thereof and, at the time of acquisition, having a rating of at least A-1 from S&P or at least P-1 from Moody’s; (iv) certificates of deposit or bankers’ acceptances maturing within one year from the date of acquisition
thereof issued by any bank organized under the laws of the United States of America or any state thereof or the District of Columbia or any U.S. branch of a foreign bank or by a bank organized under the laws of any foreign country recognized by the
United States of America, in each case having at the date of acquisition thereof combined capital and surplus of not less than $250.0 million (or the foreign currency equivalent thereof); (v) repurchase obligations with a term of not more than
seven days for underlying securities of the types described in clause (i) above entered into with any bank meeting the qualifications specified in clause (iv) above; and (vi) investments in money market funds which invest
substantially all their assets in securities of the types described in clauses (i) through (v) above. 
 “Change of Control” means the occurrence of one or more of the following events: (i) any sale, lease, exchange or other transfer (in one transaction or a series of related transactions) of all or substantially all of
the assets of the Company or Holdings to any Person or group of related Persons for purposes of Section 13(d) of the Exchange Act (a “Group”) other than to the Company (in the case of the assets of Holdings), the Permitted
Holders or their Related Parties or any Permitted Group; (ii) the approval by the holders of Capital Stock of the Company of any plan or proposal for the liquidation or dissolution of the Company (whether or not otherwise in compliance with the
provisions of this Indenture); (iii) any Person or Group (other than the Permitted Holders or their Related Parties or any Permitted Group) shall become the beneficial owner, directly or indirectly, of shares representing more than 50% of the
total ordinary voting power represented by the issued and outstanding Capital Stock of the Company or Holdings; or (iv) the first day on which a majority of the members of the Board of Directors of the Company or Holdings are not Continuing
Directors. 
  

 3 

 “Common Stock” of any Person means any and all shares, interests or other
participations in, and other equivalents (however designated and whether voting or non-voting) of such Person’s common stock, whether outstanding on the Relevant Date or issued after the Relevant Date, and includes, without limitation, all
series and classes of such common stock. 
 “Company” means the party named as such in this Indenture until a
successor replaces it and, thereafter, means the successor and, for purposes of any provision contained herein and required by the TIA, each other obligor on the indenture securities. 
 “Consolidated EBITDA” means, with respect to any Person, for any period, the sum (without duplication) of such
Person’s (i) Consolidated Net Income; and (ii) to the extent Consolidated Net Income has been reduced thereby: (A) all income taxes and foreign withholding taxes and taxes based on capital and commercial activity (or similar
taxes) of such Person and its Restricted Subsidiaries paid or accrued in accordance with GAAP for such period; (B) Consolidated Interest Expense; (C) Consolidated Non-cash Charges less any non-cash items increasing Consolidated Net Income
for such period (other than normal accruals in the ordinary course of business), all as determined on a consolidated basis for such Person and its Restricted Subsidiaries in accordance with GAAP; (D) restructuring costs, facilities relocation
costs and acquisition integration costs and fees, including, without limitation, cash severance payments made in connection with acquisitions; (E) any expenses or charges related to any Equity Offering, Permitted Investment, acquisition,
disposition, recapitalization or the incurrence of Indebtedness permitted to be incurred by the Indenture, including a refinancing thereof (whether or not successful) and any amendment or modification to the terms of any such transactions, including
such fees, expenses or charges related to the Transactions; (F) any write-offs, write-downs or other non-cash charges, excluding any such charge that represents an accrual or reserve for a cash expenditure for a future period; (G) the
amount of any expense related to minority interests; (H) the amount of management, monitoring, consulting and advisory fees and related expenses paid (or any accruals related to such fees or related expenses) during such period to the Sponsors
to the extent permitted under Section 4.11; (I) the amount of any earn-out payments or deferred purchase price in conjunction with acquisitions; (J) any costs or expenses incurred by the Company or a Restricted Subsidiary pursuant to
any management equity plan or stock option plan or any other management or employee benefit plan or agreement or any stock subscription or stockholders agreement, to the extent that such costs or expenses are funded with cash proceeds contributed to
the capital of the Company or net cash proceeds of issuance of Qualified Capital Stock of the Company (other than Disqualified Capital Stock that is Preferred Stock) in each case, solely to the extent that such cash proceeds are excluded from the
calculation set forth in clauses (w) and (x) of Section 4.07(ii); and (K) the one-time special bonus payments in an amount not in excess of $6.2 million by the Company to members of management on November 10, 2005; and
(iii) decreased by (without duplication) non-cash gains increasing Consolidated Net Income of such Person for such period, excluding any gains that represent the reversal of any accrual of, or cash reserve for, anticipated cash charges in any
prior period (other than such cash charges that have been added back to Consolidated Net Income in calculating Consolidated EBITDA in accordance with this definition). 
 “Consolidated Fixed Charge Coverage Ratio” means, with respect to any Person, the ratio of Consolidated EBITDA of such Person during the four full fiscal quarters (the
“Four-Quarter Period”) ending prior to the date of the transaction giving rise to the need to calculate

  

 4 

 
the Consolidated Fixed Charge Coverage Ratio for which internal financial statements are available (the “Transaction Date”) to Consolidated Fixed Charges of such Person for the
Four-Quarter Period. In addition to, and without limitation of, the foregoing, for purposes of this definition, “Consolidated EBITDA” and “Consolidated Fixed Charges” shall be calculated after giving effect on a pro forma basis
for the period of such calculation to (i) the incurrence or repayment of any Indebtedness or the issuance of any Designated Preferred Stock of such Person or any of its Restricted Subsidiaries (and the application of the proceeds thereof)
giving rise to the need to make such calculation and any incurrence or repayment of other Indebtedness or the issuance or redemption of other Preferred Stock (and the application of the proceeds thereof), other than the incurrence or repayment of
Indebtedness in the ordinary course of business for working capital purposes pursuant to revolving credit facilities, occurring during the Four-Quarter Period or at any time subsequent to the last day of the Four-Quarter Period and on or prior to
the Transaction Date, as if such incurrence or repayment or issuance or redemption, as the case may be (and the application of the proceeds thereof), had occurred on the first day of the Four-Quarter Period; and (ii) any Asset Sales or other
dispositions or Asset Acquisitions (including, without limitation, any Asset Acquisition giving rise to the need to make such calculation as a result of such Person or one of its Restricted Subsidiaries (including any Person who becomes a Restricted
Subsidiary as a result of the Asset Acquisition) incurring, assuming or otherwise being liable for Acquired Indebtedness and also including any Consolidated EBITDA attributable to the assets which are the subject of the Asset Acquisition or Asset
Sale or other disposition and without regard to clause (vi) of the definition of Consolidated Net Income), investments, mergers, consolidations and disposed operations (as determined in accordance with GAAP) occurring during the Four-Quarter
Period or at any time subsequent to the last day of the Four-Quarter Period and on or prior to the Transaction Date, as if such Asset Sale or other disposition or Asset Acquisition (including the incurrence or assumption of any such Acquired
Indebtedness), investment, merger, consolidation or disposed operation, occurred on the first day of the Four-Quarter Period. If such Person or any of its Restricted Subsidiaries directly or indirectly guarantees Indebtedness of a third Person, the
preceding sentence shall give effect to the incurrence of such guaranteed Indebtedness as if such Person or any Restricted Subsidiary of such Person had directly incurred or otherwise assumed such other Indebtedness that was so guaranteed.

 Furthermore, in calculating “Consolidated Fixed Charges” for purposes of determining the denominator (but not the
numerator) of this “Consolidated Fixed Charge Coverage Ratio”: (i) interest on outstanding Indebtedness determined on a fluctuating basis as of the Transaction Date and which will continue to be so determined thereafter shall be
deemed to have accrued at a fixed rate per annum equal to the rate of interest on such Indebtedness in effect on the Transaction Date; and (ii) notwithstanding clause (i) of this paragraph, interest on Indebtedness determined on a
fluctuating basis, to the extent such interest is covered by agreements relating to Interest Swap Obligations, shall be deemed to accrue at the rate per annum resulting after giving effect to the operation of such agreements. 
 For purposes of this definition, whenever pro forma effect is to be given to an acquisition of assets, the amount of income or earnings
relating thereto and the amount of Consolidated Interest Expense associated with any Indebtedness incurred in connection therewith, the pro forma calculations shall be determined in good faith by a responsible financial or accounting officer of the
Company. In addition, any such pro forma calculation may include

  

 5 

 
adjustments appropriate, in the reasonable determination of the Company as set forth in an Officers’ Certificate, to reflect operating expense reductions reasonably expected to result from
any acquisition or merger. 
 “Consolidated Fixed Charges” means, with respect to any Person for any period,
the sum of, without duplication: (i) Consolidated Interest Expense; plus (ii) the product of (x) the amount of all cash dividend payments on any series of Preferred Stock of such Person times (y) a fraction, the numerator
of which is one and the denominator of which is one minus the then-current effective consolidated Federal, state and local income tax rate of such Person, expressed as a decimal (as estimated in good faith by the chief financial officer of the
Company, which estimate shall be conclusive); plus (iii) the product of (x) the amount of all dividend payments on any series of Permitted Subsidiary Preferred Stock times (y) a fraction, the numerator of which is one and the
denominator of which is one minus the then-current effective consolidated Federal, state and local income tax rate of such Person, expressed as a decimal (as estimated in good faith by the chief financial officer of the Company, which estimate shall
be conclusive); provided that, with respect to any series of Preferred Stock that did not pay dividends during such period but that is eligible to pay cash dividends during any period prior to the maturity date of the Notes, cash dividends
shall be deemed to have been paid with respect to such series of Preferred Stock during such period for purposes of this clause (iii). 
 “Consolidated Interest Expense” means, with respect to any Person for any period, the sum of, without duplication, (i) the aggregate of all cash and non-cash interest expense (net of interest income) with respect to
all outstanding Indebtedness of such Person and its Restricted Subsidiaries, including the net costs associated with Interest Swap Obligations, for such period determined on a consolidated basis in conformity with GAAP, but excluding
(A) amortization or write-off of debt issuance costs, deferred financing fees, commissions, fees and expenses, (B) any expensing of bridge, commitment and other financing fees, (C) commissions, discounts, yield and other fees and
charges (including any interest expense) related to any Qualified Securitization Transaction and (D) any redemption premium paid in connection with the redemption of the Existing Notes; (ii) the consolidated interest expense of such Person
and its Restricted Subsidiaries that was capitalized during such period; and (iii) the interest component of Capitalized Lease Obligations paid, accrued and/or scheduled to be paid or accrued by such Person and its Restricted Subsidiaries
during such period as determined on a consolidated basis in accordance with GAAP. 
 “Consolidated Net Income”
means, for any period, the aggregate net income (or loss) of the Company and its Restricted Subsidiaries for such period on a consolidated basis, determined in accordance with GAAP and without any deduction in respect of Preferred Stock dividends;
provided that there shall be excluded therefrom to the extent otherwise included, without duplication: (i) gains and losses from Asset Sales (without regard to the $1.0 million limitation set forth in the definition thereof) and the
related tax effects according to GAAP; (ii) gains and losses due solely to fluctuations in currency values and the related tax effects according to GAAP; (iii) all extraordinary, unusual or non-recurring charges, gains and losses
(including, without limitation, all restructuring costs, facilities relocation costs, acquisition integration costs and fees, including cash severance payments made in connection with acquisitions, and any expense or charge related to the repurchase
of Capital Stock or warrants or options to purchase Capital Stock), and the related tax effects according to GAAP; (iv) the net

  

 6 

 
income (or loss) from disposed or discontinued operations or any net gains or losses on disposal of disposed or discontinued operations, and the related tax effects according to GAAP;
(v) any impairment charge or asset write-off, in each cash pursuant to GAAP, and the amortization of intangibles arising pursuant to GAAP; (vi) the net income (or loss) of any Person acquired in a pooling of interests transaction accrued
prior to the date it becomes a Restricted Subsidiary of the Company or is merged or consolidated with or into the Company or any Restricted Subsidiary of the Company; (vii) solely for the purpose of determining the amount available for
Restricted Payments under clause (ii) of Section 4.07, the net income (but not loss) of any Restricted Subsidiary of the Company (other than a Guarantor) to the extent that the declaration of dividends or similar distributions by that
Restricted Subsidiary of the Company of that income is not at the date of determination wholly permitted without any prior governmental approval (which has not been obtained) or, directly or indirectly, by the operation of the terms of its charter
or any agreement, instrument, judgment, decree, order, statute, rule or governmental regulation applicable to that Restricted Subsidiary or its stockholders, unless such restriction with respect to the payment of dividends or similar distributions
has been legally waived; provided that Consolidated Net Income of the Company will be increased by the amount of dividends or other distributions or other payments actually paid in cash (or to the extent converted into cash) to the Company or
a Restricted Subsidiary thereof in respect of such period, to the extent not already included therein; (viii) the net loss of any Person, other than a Restricted Subsidiary of the Company; (ix) the net income of any Person, other than a
Restricted Subsidiary of the Company, except to the extent of cash dividends or distributions paid to the Company or a Restricted Subsidiary of the Company by such Person; (x) in the case of a successor to the referent Person by consolidation
or merger or as a transferee of the referent Person’s assets, any earnings of the successor corporation prior to such consolidation, merger or transfer of assets; (xi) any non-cash compensation charges and deferred compensation charges,
including any arising from existing stock options resulting from any merger or recapitalization transaction; provided, however, that Consolidated Net Income for any period shall be reduced by any cash payments made during such period
by such Person in connection with any such deferred compensation, whether or not such reduction is in accordance with GAAP; and (xii) inventory purchase accounting adjustments and amortization and impairment charges resulting from other
purchase accounting adjustments with respect to acquisition transactions. For purposes of clause (ii)(v) of Section 4.07 hereof, Consolidated Net Income shall be reduced by any cash dividends paid with respect to any series of Designated
Preferred Stock. 
 “Consolidated Non-cash Charges” means, with respect to any Person, for any period, the
aggregate depreciation, amortization and other non-cash charges, impairments and expenses of such Person and its Restricted Subsidiaries reducing Consolidated Net Income of such Person and its Restricted Subsidiaries for such period, determined on a
consolidated basis in accordance with GAAP (excluding any such charges that require an accrual of, or a reserve for, cash payments for any future period other than accruals or reserves associated with mandatory repurchases of equity securities). For
clarification purposes, purchase accounting adjustments with respect to inventory will be included in Consolidated Non-cash Charges. 
 “Continuing Directors” means, as of any date of determination, any member of the Board of Directors of the Company or Holdings who (i) was a member of such Board of Directors on the Relevant Date; or (ii) was
nominated for election or elected to such Board of Directors by any of the Permitted Holders or with the approval of a majority of the Continuing Directors who were members of such Board at the time of such nomination or election. 
  

 7 

 “Corporate Trust Office of the Trustee” shall be at the address of the
Trustee specified in Section 13.02 hereof or such other address as to which the Trustee may give notice to the Company. 
 “Credit Facility” means the credit agreement dated as of the Relevant Date among the Company, the lenders party thereto in their capacities as lenders thereunder, Credit Suisse Securities (USA) LLC, as joint bookrunner,
joint lead arranger, administrative agent and collateral agent, Banc of America Securities LLC, as joint bookrunner and joint lead arranger, Bank of America, N.A., as syndication agent, together with the related documents thereto (including, without
limitation, any guarantee agreements and security documents), and any amendments, supplements, modifications, extensions, replacements, renewals, restatements, refundings or refinancings thereof and any indentures or credit facilities or commercial
paper facilities with banks or other institutional lenders or investors that extend, replace, refund, refinance, renew or defease any part of the loans, notes, other credit facilities or commitments thereunder, including any such replacement,
refunding or refinancing facility or indenture that increases the amount borrowable thereunder or alters the maturity thereof (provided that such increase in borrowings is permitted under Section 4.09). 
 “Currency Agreement” means any foreign exchange contract, currency swap agreement or other similar agreement or arrangement
designed to protect the Company or any Restricted Subsidiary of the Company against fluctuations in currency values. 
 “Definitive Note” has the meaning set forth in the Appendix hereto. 
 “Default”
means an event or condition the occurrence of which is, or with the lapse of time or the giving of notice or both would be, an Event of Default. 
 “Description of Notes” means the “Description of the Notes” section of the final offering circular dated September 30, 2009 with respect to the offering of the Notes.

 “Designated Non-cash Consideration” means any non-cash consideration received by the Company or one of its
Restricted Subsidiaries in connection with an Asset Sale (including any Asset Sale occurring after the Relevant Date and prior to the Issue Date) that is designated as Designated Non-cash Consideration pursuant to an Officers’ Certificate
executed by the principal executive officer and the principal financial officer of the Company or such Restricted Subsidiary at the time of such Asset Sale. Any particular item of Designated Non-cash Consideration will cease to be considered to be
outstanding once it has been sold for cash or Cash Equivalents. 
 “Designated Preferred Stock” means Preferred
Stock that is so designated as Designated Preferred Stock, pursuant to an Officers’ Certificate executed by the principal executive officer and the principal financial officer of the Company, on the issuance date thereof, the cash proceeds of
which are excluded from the calculation set forth in clause (ii)(w) of the first paragraph of Section 4.07 hereof. 
  

 8 

 “Designated Senior Debt” means (i) the Indebtedness under the Credit
Facility and (ii) any other Indebtedness constituting Senior Debt which, at the time of determination, has an aggregate principal amount of at least $25.0 million and is specifically designated in the instrument evidencing such Senior Debt as
“Designated Senior Debt”, including “Designated Senior Debt” for purposes of the 2006 Notes, by the Company. 
 “Disqualified Capital Stock” means with respect to any Person, any Capital Stock which by its terms (or by the terms of any security into which it is convertible or for which it is exchangeable at the option of the holder)
or upon the happening of any event, (i) matures or is mandatorily redeemable, (other than redeemable only for Capital Stock of such Person which is not itself Disqualified Capital Stock) pursuant to a sinking fund obligation or otherwise,
(ii) is convertible or exchangeable at the option of the holder for Indebtedness or Disqualified Capital Stock, or (iii) is mandatorily redeemable or must be purchased upon the occurrence of certain events or otherwise, in whole or in
part; in each case on or prior to the final maturity date of the Notes; provided, however, that any Capital Stock that would not constitute Disqualified Capital Stock but for provisions thereof giving holders thereof the right to
require such Person to purchase or redeem such Capital Stock upon the occurrence of an “asset sale” or “change of control” occurring prior to the final maturity date of the Notes shall not constitute Disqualified Capital Stock
if: (A) the “asset sale” or “change of control” provisions applicable to such Capital Stock are not more favorable to the holders of such Capital Stock than the terms applicable to the Notes and described in Sections 4.10
and 4.15 hereof, respectively; and (B) any such requirement only becomes operative after compliance with such terms applicable to the Notes, including the purchase of any Notes tendered pursuant thereto. 
 “Domestic Restricted Subsidiary” means any direct or indirect Restricted Subsidiary of the Company that is incorporated
under the laws of the United States of America, any State thereof or the District of Columbia. 
 “Equity
Offering” means any offering of Qualified Capital Stock of Holdings or the Company; provided that, in the event such equity offering is not in the form of a public offering registered under the Securities Act, the proceeds received
by the Company directly or indirectly from such offering are not less than $10.0 million. 
 “Exchange Act”
means the Securities Exchange Act of 1934, as amended, or any successor statute or statutes thereto. 
 “Exchange
Notes” has the meaning set forth in the Appendix hereto. 
 “Excluded Contribution” means net cash
proceeds, Marketable Securities or Qualified Proceeds received after the Relevant Date by the Company from (i) contributions to its common equity capital and (ii) the sale (other than to a Subsidiary of the Company or to any management
equity plan or stock option plan or any other management or employee benefit plan or agreement of the Company) of Capital Stock (other than Disqualified Capital Stock and Designated Preferred Stock) of the Company, in each case designated as
Excluded Contributions pursuant to an officers’ certificate executed by an executive vice president and the principal financial officer of the Company on the date such capital contributions are made or the date such Capital Stock is sold, as
the case may be, which are excluded from the calculation set forth in clause (ii) of Section 4.07. 
  

 9 

 “Existing Notes” means the Company’s 8  3/8% Senior Subordinated Notes due 2011 issued under that
certain Indenture, dated as of July 22, 2003, among the Company, TransDigm Holding Company and the other guarantors party thereto. 
 “fair market value” means, with respect to any asset or property, the price which could be negotiated in an arm’s-length, free market transaction, for cash, between a willing seller
and a willing and able buyer, neither of whom is under undue pressure or compulsion to complete the transaction. Fair market value shall be determined by the Board of Directors of the Company acting reasonably and in good faith. 
 “Foreign Restricted Subsidiary” means any Restricted Subsidiary of the Company that is not a Domestic Restricted
Subsidiary. 
 “Four-Quarter Period” has the meaning specified in the definition of Consolidated Fixed Charge
Coverage Ratio. 
 “GAAP” means generally accepted accounting principles set forth in the opinions and
pronouncements of the Accounting Principles Board of the American Institute of Certified Public Accountants and statements and pronouncements of the Financial Accounting Standards Board or in such other statements by such other entity as may be
approved by a significant segment of the accounting profession of the United States of America, as in effect as of the Relevant Date. 
 “Government Securities” means direct obligations of, or obligations guaranteed by, the United States of America, and for the payment of which the United States pledges its full faith
and credit. 
 “Group” has the meaning specified in the definition of Change of Control. 
 “Guarantee” means (i) the guarantee of the Notes by Holdings and the Domestic Restricted Subsidiaries of the Company
in accordance with the terms of this Indenture; and (ii) the guarantee of the Notes by any Restricted Subsidiary required under the terms of Section 4.17 hereof. 
 “Guarantor” means any Restricted Subsidiary that incurs a Guarantee; provided that upon the release and discharge of
any such Restricted Subsidiary from its Guarantee in accordance with Section 11.07 hereof, such Restricted Subsidiary shall cease to be a Guarantor. 
 “Hedging Agreement” means any agreement with respect to the hedging of price risk associated with the purchase of commodities used in the business of the Company and its Restricted
Subsidiaries, so long as any such agreement has been entered into in the ordinary course of business and not for purposes of speculation. 
 “Holder” means a Person in whose name a Note is registered. 
  

 10 

 “Immaterial Domestic Restricted Subsidiary” means, at any date of
determination, any Restricted Subsidiary of the Company that (i) contributed 2.5% or less of Consolidated EBITDA of the Company for the period of four fiscal quarters most recently ended more than forty-five (45) days prior to the date of
determination and (ii) had consolidated assets representing 2.5% or less of Total Assets on the last day of the most recent fiscal quarter ended more than forty-five (45) days prior to the date of determination. 
 “Indebtedness” means with respect to any Person, without duplication, (i) all Obligations of such Person for borrowed
money, (ii) all Obligations of such Person evidenced by bonds, debentures, notes or other similar instruments, (iii) all Capitalized Lease Obligations of such Person, (iv) all Obligations of such Person issued or assumed as the
deferred purchase price of property, all conditional sale obligations and all Obligations under any title retention agreement (but excluding trade accounts payable and other accrued liabilities arising in the ordinary course of business),
(v) all Obligations for the reimbursement of any obligor on any letter of credit, banker’s acceptance or similar credit transaction, (vi) guarantees and other contingent obligations in respect of Indebtedness referred to in clauses
(i) through (v) above and clause (viii) below, (vii) all Obligations of any other Person of the type referred to in clauses (i) through (vi) which are secured by any Lien on any property or asset of such Person, the
amount of such Obligation being deemed to be the lesser of the fair market value of such property or asset and the amount of the Obligation so secured, (viii) all Obligations under Currency Agreements and interest swap agreements of such Person
and (ix) all Disqualified Capital Stock issued by such Person with the amount of Indebtedness represented by such Disqualified Capital Stock being equal to the greater of its voluntary or involuntary liquidation preference and its maximum fixed
repurchase price, but excluding accrued dividends, if any. 
 Notwithstanding the foregoing, in connection with the purchase by
the Company or any Restricted Subsidiary of any business, the term “Indebtedness” will exclude post-closing payment adjustments to which the seller may become entitled to the extent such payment is determined by a final closing balance
sheet or such payment depends on the performance of such business after the closing; provided, however, that, at the time of closing, the amount of any such payment is not determinable, and, to the extent such payment thereafter
becomes fixed and determined, the amount is paid within 60 days thereafter. For clarification purposes, the liability of the Company or any Restricted Subsidiary to make periodic payments to licensors in consideration for the license of patents and
technical information under license agreements in existence on the Relevant Date and any amount payable in respect of a settlement of disputes with respect to such payments thereunder shall not constitute Indebtedness. 
 For purposes hereof, the “maximum fixed repurchase price” of any Disqualified Capital Stock which does not have a fixed repurchase
price shall be calculated in accordance with the terms of such Disqualified Capital Stock as if such Disqualified Capital Stock were purchased on any date on which Indebtedness shall be required to be determined pursuant to the Indenture, and, if
such price is based upon, or measured by, the fair market value of such Disqualified Capital Stock, such fair market value shall be determined reasonably and in good faith by the Board of Directors of the issuer of such Disqualified Capital Stock.
For the purposes of calculating the amount of Indebtedness of a Securitization Entity outstanding as of any date, the face or notional amount of any interest in receivables or equipment that is outstanding as of such date shall be deemed to be
Indebtedness, but any such interests held by Affiliates of such Securitization Entity shall be excluded for purposes of such calculation. 
  

 11 

 “Indenture” means this Indenture, as amended or supplemented from time to
time. 
 “Initial Notes” has the meaning set forth in the Appendix hereto. 
 “Interest Swap Obligations” means the obligations of any Person pursuant to any arrangement with any other Person, whereby,
directly or indirectly, such Person is entitled to receive from time to time periodic payments calculated by applying either a floating or a fixed rate of interest on a stated notional amount in exchange for periodic payments made by such other
Person calculated by applying a fixed or a floating rate of interest on the same notional amount and shall include, without limitation, interest rate swaps, caps, floors, collars and similar agreements. 
 “Investment” means, with respect to any Person, any direct or indirect loan or other extension of credit (including,
without limitation, a guarantee) or capital contribution to (by means of any transfer of cash or other property to others or any payment for property or services for the account or use of others), or any purchase or acquisition by such Person of any
Capital Stock, bonds, notes, debentures or other securities or evidences of Indebtedness issued by, any Person. “Investment” shall exclude extensions of trade credit by the Company and its Restricted Subsidiaries in accordance with normal
trade practices of the Company or such Restricted Subsidiary, as the case may be. Except as otherwise provided herein, the amount of an Investment shall be its fair market value at the time the Investment is made and without giving effect to
subsequent changes in its fair market value. 
 “Investment Grade Rating” means a rating equal to or higher
than Baa3 (or the equivalent) by Moody’s and BBB– (or the equivalent) by S&P, or an equivalent rating by any other Rating Agency. 
 “Issue Date” means the date hereof. 
 “Legal
Holiday” means a Saturday, a Sunday or a day on which banking institutions in the City of New York, the city in which the principal corporate trust office of the Trustee is located or at a place of payment are authorized by law, regulation
or executive order to remain closed. If a payment date is a Legal Holiday at a place of payment, payment may be made at that place on the next succeeding day that is not a Legal Holiday, and no interest shall accrue on such payment for the
intervening period. 
 “Lien” means any lien, mortgage, deed of trust, pledge, security interest, charge or
encumbrance of any kind (including any conditional sale or other title retention agreement, any lease in the nature thereof and any agreement to give any security interest). 
 “Marketable Securities” means publicly traded debt or equity securities that are listed for trading on a national
securities exchange and that were issued by a corporation whose debt securities are rated in one of the three highest rating categories by either S&P or Moody’s. 
 “Moody’s” means Moody’s Investors Service, Inc. or any successor thereto 
  

 12 

 “Net Cash Proceeds” means, with respect to any Asset Sale (including any
Asset Sale occurring after the Relevant Date and prior to the Issue Date), the proceeds in the form of cash or Cash Equivalents including payments in respect of deferred payment obligations when received in the form of cash or Cash Equivalents
(other than the portion of any such deferred payment constituting interest) received by the Company or any of its Restricted Subsidiaries from such Asset Sale net of: (i) reasonable out-of-pocket expenses and fees relating to such Asset Sale
(including, without limitation, legal, accounting and investment banking fees and sales commissions and title and recording tax expenses); (ii) all Federal, state, provincial, foreign and local taxes required to be accrued as a liability under
GAAP as a consequence of such Asset Sale; (iii) appropriate amounts to be provided by the Company or any Restricted Subsidiary, as the case may be, as a reserve, in accordance with GAAP, against any liabilities associated with such Asset Sale
and retained by the Company or any Restricted Subsidiary, as the case may be, after such Asset Sale, including, without limitation, pension and other post-employment benefit liabilities, liabilities related to environmental matters and liabilities
under any indemnification obligations associated with such Asset Sale (iv) all distributions and other payments required to be made to minority interest holders in Restricted Subsidiaries as a result of such Asset Sale; and (v) all
payments made on any Indebtedness which is secured by any assets subject to such Asset Sale, in accordance with the terms of any Lien upon or other security agreement of any kind with respect to such assets, or which must by its terms, or in order
to obtain a necessary consent to such Asset Sale, or by applicable law, be repaid out of the proceeds from such Asset Sale. 
 “Notes” means, collectively, the Initial Notes, the Exchange Notes and the Private Exchange Notes, treated as a single class of securities, as amended or supplemented from time to time in accordance with the terms hereof,
that are issued pursuant to this Indenture. 
 “Obligations” means all obligations for principal, premium,
interest, penalties, fees, indemnifications, reimbursements, damages and other liabilities payable under the documentation governing any Indebtedness. 
 “Officer” means, with respect to any Person (other than the Trustee), the Chairman of the Board, the Chief Executive Officer, the President, the Chief Operating Officer, the Chief
Financial Officer, the Treasurer, any Assistant Treasurer, the Controller, the Secretary or any Vice-President of such Person. 
 “Officers’ Certificate” means a certificate signed by two Officers of the Company, one of whom must be the principal executive officer, the principal financial officer, the treasurer or the principal accounting officer
of the Company, that meets the requirements of Sections 13.04 and 13.05 hereof. 
 “Opinion of Counsel” means
an opinion reasonably acceptable to the Trustee from legal counsel. The counsel may be an employee of, or counsel to, the Company or any Subsidiary of the Company. 
 “Permitted Business” means any business (including stock or assets) that derives a majority of its revenues from the business engaged in by the Company and its Restricted Subsidiaries on
the Relevant Date and/or activities that are reasonably similar, ancillary or related to, or a reasonable extension, development or expansion of, the businesses in which the Company and its Restricted Subsidiaries are engaged on the Relevant Date.

  

 13 

 “Permitted Group” means any group of investors that is deemed to be a
“person” (as such term is used in Section 13(d)(3) of the Exchange Act) by virtue of the Stockholders’ Agreements, as the same may be amended, modified or supplemented from time to time; provided that no single Person
(together with its Affiliates), other than the Permitted Holders and their Related Parties, is the “beneficial owner” (as such term is used in Section 13(d) of the Exchange Act), directly or indirectly, of more than 50% of the
voting power of the issued and outstanding Capital Stock of the Company or Holdings (as applicable) that is “beneficially owned” (as defined above) by such group of investors. 
 “Permitted Holders” means Warburg Pincus Private Equity VIII, L.P. and its Affiliates and any general or limited partners
of Warburg Pincus Private Equity VIII, L.P., TD Group Holdings, LLC and its Affiliates and any members of TD Group Holdings, LLC. 
 “Permitted Indebtedness” means, without duplication, each of the following: 
 (i)
Indebtedness under the Notes (other than any Additional Notes); 
 (ii) Indebtedness of the Company or any of
its Restricted Subsidiaries incurred pursuant to the Credit Facility in an aggregate principal amount at any time outstanding not to exceed $1,050.0 million, less: (A) the aggregate amount of Indebtedness of Securitization Entities at the time
outstanding, (B) the amount of all mandatory principal payments actually made by the Company or any such Restricted Subsidiary since the Relevant Date with the Net Cash Proceeds of an Asset Sale in respect of term loans under a Credit Facility
(excluding any such payments to the extent refinanced at the time of payment) and (C) further reduced by any repayments of revolving credit borrowings under the Credit Facility with the Net Cash Proceeds of an Asset Sale that are accompanied by
a corresponding commitment reduction thereunder; provided that the amount of Indebtedness permitted to be incurred pursuant to the Credit Facility in accordance with this clause (ii) shall be in addition to any Indebtedness permitted to
be incurred pursuant to a Credit Facility in reliance on, and in accordance with, clauses (vii), (xiii), (xiv) and (xv) below; 
 (iii) other Indebtedness of the Company and its Restricted Subsidiaries (A) outstanding on the Relevant Date (including the 2006 Notes) or (B) outstanding on the Issue Date to the extent such
Indebtedness was either incurred pursuant to the Consolidated Fixed Charge Coverage provisions of Section 4.09 of the indenture for the 2006 Notes or constitutes Refinancing Indebtedness in respect thereof pursuant to clause (viii) of the
definition of “Permitted Indebtedness” in such indenture, reduced, in the case of both (A) and (B), by the amount of any scheduled amortization payments or mandatory prepayments when actually paid or permanent reductions therein;

 (iv) Interest Swap Obligations of the Company or any of its Restricted Subsidiaries covering Indebtedness of
the Company or any of its Restricted Subsidiaries; provided that any Indebtedness to which any such Interest Swap Obligations correspond

  

 14 

 
is otherwise permitted to be incurred under this Indenture; provided, further, that such Interest Swap Obligations are entered into, in the judgment of the Company, to protect the
Company or any of its Restricted Subsidiaries from fluctuation in interest rates on its outstanding Indebtedness; 
 (v) Indebtedness of the Company or any Restricted Subsidiary under Hedging Agreements and Currency Agreements; 
 (vi) the incurrence by the Company or any of its Restricted Subsidiaries of intercompany Indebtedness between or among the Company and any such Restricted Subsidiaries; provided, however,
that: (a) if the Company is the obligor on such Indebtedness, and the payee is a Restricted Subsidiary that is not a Guarantor, such Indebtedness is expressly subordinated to the prior payment in full in cash of all Obligations with respect to
the Notes and (b) (1) any subsequent issuance or transfer of Capital Stock that results in any such Indebtedness being held by a Person other than the Company or a Restricted Subsidiary thereof and (2) any sale or other transfer of
any such Indebtedness to a Person that is not either the Company or a Restricted Subsidiary thereof (other than by way of granting a Lien permitted under this Indenture or in connection with the exercise of remedies by a secured creditor) shall be
deemed, in each case, to constitute an incurrence of such Indebtedness by the Company or such Restricted Subsidiary, as the case may be, that was not permitted by this clause (vi); 
 (vii) Indebtedness (including Capitalized Lease Obligations) incurred by the Company or any of its Restricted Subsidiaries
to finance the purchase, lease or improvement of property (real or personal) or equipment (whether through the direct purchase of assets or the Capital Stock of any person owning such assets) in an aggregate principal amount outstanding not to
exceed $10.0 million; 
 (viii) Refinancing Indebtedness (other than Refinancing Indebtedness with respect to
Indebtedness incurred pursuant to clause (ii) of this definition); 
 (ix) guarantees by the Company and
its Restricted Subsidiaries of each other’s Indebtedness; provided that such Indebtedness is permitted to be incurred under this Indenture; provided, further, that in the event such Indebtedness (other than Acquired
Indebtedness) is incurred pursuant to the Consolidated Fixed Charge Coverage Ratio provisions of Section 4.09 hereof, such guarantees are by the Company or a Guarantor only; 
 (x) Indebtedness arising from agreements of the Company or a Restricted Subsidiary of the Company providing for
indemnification, adjustment of purchase price, earn-out or other similar obligations, in each case, incurred or assumed in connection with the disposition of any business, assets or a Restricted Subsidiary of the Company, other than guarantees of
Indebtedness incurred by any Person acquiring all or any portion of such business, assets or Restricted Subsidiary for the purpose of financing such acquisition; provided that the maximum assumable liability in respect of all such
Indebtedness shall at no time exceed the gross proceeds actually received by the Company and its Restricted Subsidiaries in connection with such disposition; 
  

 15 

 (xi) obligations in respect of performance and surety bonds and completion
guarantees provided by the Company or any Restricted Subsidiary of the Company in the ordinary course of business; 
 (xii) the incurrence by a Securitization Entity of Indebtedness in a Qualified Securitization Transaction that is non-recourse to the Company or any Subsidiary of the Company (except for Standard Securitization Undertakings); 
 (xiii) Indebtedness incurred by the Company or any of the Guarantors in connection with the acquisition of a Permitted
Business; provided that on the date of the incurrence of such Indebtedness, after giving effect to the incurrence thereof and the use of proceeds therefrom, either (A) the Company would be permitted to incur at least $1.00 of additional
Indebtedness pursuant to the Consolidated Fixed Charge Coverage Ratio provisions of Section 4.09 hereof or (B) the Consolidated Fixed Charge Coverage Ratio of the Company would be greater than the Consolidated Fixed Charge Coverage Ratio
of the Company immediately prior to the incurrence of such Indebtedness; 
 (xiv) additional Indebtedness of the
Company and the Guarantors (which amount may, but need not, be incurred in whole or in part under a credit facility) (it being understood that any Indebtedness incurred pursuant to this clause (xiv) shall cease to be deemed incurred or
outstanding for purposes of this clause (xiv) but shall be deemed incurred pursuant to Section 4.09 hereof from and after the first date on which the Company or such Restricted Subsidiary could have incurred such Indebtedness pursuant to
Section 4.09 hereof without reliance on this clause (xiv)) in an aggregate principal amount that does not exceed $75.0 million at any one time outstanding; 
 (xv) additional Indebtedness of the Foreign Restricted Subsidiaries in an aggregate principal amount which (when combined
with the liquidation value of all series of outstanding Permitted Subsidiary Preferred Stock) does not exceed $15.0 million at any one time outstanding (which amount may, but need not, be incurred in whole or in part under a Credit Facility); (it
being understood that any Indebtedness incurred pursuant to this clause (xv) shall cease to be deemed incurred or outstanding for purposes of this clause (xv) but shall be deemed incurred pursuant to Section 4.09 hereof from and after
the first date on which the Company or such Restricted Subsidiary could have incurred such Indebtedness pursuant to Section 4.09 hereof without reliance on this clause (xv)); 
 (xvi) Indebtedness arising from the honoring by a bank or other financial institution of a check, draft or similar
instrument inadvertently (except in the case of daylight overdrafts) drawn against insufficient funds in the ordinary course of business; provided, however, that such Indebtedness is extinguished within five business days of
incurrence; and 
 (xvii) Indebtedness of the Company or any of its Restricted Subsidiaries represented by
letters of credit for the account of the Company or such Restricted Subsidiary, as the case may be, issued in the ordinary course of business of the Company or such Restricted Subsidiary, including, without limitation, in order to provide security
for workers’ compensation claims or payment obligations in connection with

  

 16 

 
self- insurance or similar requirements in the ordinary course of business and other Indebtedness with respect to workers’ compensation claims, self-insurance obligations, performance,
surety and similar bonds and completion guarantees provided by the Company or any Restricted Subsidiary of the Company in the ordinary course of business. 
 For purposes of determining compliance with Section 4.09 hereof, in the event that an item of Indebtedness meets the criteria of more than one of the categories of Permitted Indebtedness described in
clauses (i) through (xvii) above or is entitled to be incurred pursuant to the Consolidated Fixed Charge Coverage Ratio provisions of Section 4.09 hereof, the Company shall, in its sole discretion, divide and classify (or later
redivide and reclassify) such item of Indebtedness in any manner that complies with Section 4.09 hereof. Accrual of interest, accretion or amortization of original issue discount, the payment of interest on any Indebtedness in the form of
additional Indebtedness with the same terms, and the payment of dividends on Disqualified Capital Stock in the form of additional shares of the same class of Disqualified Capital Stock will not be deemed to be an incurrence of Indebtedness or an
issuance of Disqualified Capital Stock for purposes of Section 4.09 hereof. 
 “Permitted Investments”
means: (i) Investments by the Company or any Restricted Subsidiary of the Company in any Restricted Subsidiary of the Company (other than a Restricted Subsidiary of the Company in which an Affiliate of the Company that is not a Restricted
Subsidiary of the Company holds a minority interest) (whether existing on the Relevant Date or created thereafter) or any other Person (including by means of any transfer of cash or other property) if, as a result of such Investment, such other
Person shall become a Restricted Subsidiary of the Company (other than a Restricted Subsidiary of the Company in which an Affiliate of the Company that is not a Restricted Subsidiary of the Company holds a minority interest) or that will merge with
or consolidate into the Company or a Restricted Subsidiary of the Company and Investments in the Company by the Company or any Restricted Subsidiary of the Company; (ii) investments in cash and Cash Equivalents; (iii) loans and advances
(including payroll, travel and similar advances) to employees and officers of the Company and its Restricted Subsidiaries for bona fide business purposes incurred in the ordinary course of business or consistent with past practice or to fund such
person’s purchase of Capital Stock of the Company or any direct or indirect parent of the Company pursuant to compensatory plans approved by the Board of Directors in good faith; (iv) Currency Agreements, Hedging Agreements and Interest
Swap Obligations entered into in the ordinary course of business and otherwise in compliance with this Indenture; (v) Investments in securities of trade creditors or customers received pursuant to any plan of reorganization or similar
arrangement upon the bankruptcy or insolvency of such trade creditors or customers or in good faith settlement of delinquent obligations of such trade creditors or customers; (vi) Investments made by the Company or its Restricted Subsidiaries
as a result of consideration received in connection with an Asset Sale made in compliance with Section 4.10 hereof; (vii) Investments existing on the Relevant Date; (viii) accounts receivable created or acquired in the ordinary course
of business; (ix) guarantees by the Company or a Restricted Subsidiary of the Company permitted to be incurred under this Indenture; (x) additional Investments having an aggregate fair market value, taken together with all other
Investments made pursuant to this clause (x) that are at that time outstanding, not to exceed the greater of (A) $50.0 million and (B) 4% of the Company’s Total

  

 17 

 
Assets; (xi) any Investment by the Company or a Subsidiary of the Company in a Securitization Entity or any Investment by a Securitization Entity in any other Person in connection with a
Qualified Securitization Transaction; provided that any Investment in a Securitization Entity is in the form of a Purchase Money Note or an equity interest; (xii) Investments the payment for which consists exclusively of Qualified
Capital Stock of the Company; and (xiii) any Investment in any Person to the extent it consists of prepaid expenses, negotiable instruments held for collection and lease, utility and workers’ compensation, performance and other similar
deposits made in the ordinary course of business. 
 “Permitted Subsidiary Preferred Stock” means any series of
Preferred Stock of a Foreign Restricted Subsidiary that constitutes Qualified Capital Stock, the liquidation value of all series of which, when combined with the aggregate amount of outstanding Indebtedness of the Foreign Restricted Subsidiaries
incurred pursuant to clause (xv) of the definition of Permitted Indebtedness, does not exceed $5.0 million. 
 “Permitted Transaction Payments” means, without duplication, the following payments: (i) payments at closing to consummate the Transactions; (ii) payments required to defease the Existing Notes in accordance with
the terms of the indenture governing those notes and (iii) the payment of fees and expenses relating to the Transactions. 
 “Person” means an individual, partnership, corporation, limited liability company, unincorporated organization, trust or joint venture, or a governmental agency or political subdivision thereof. 
 “Preferred Stock” of any Person means any Capital Stock of such Person that has preferential rights to any other Capital
Stock of such Person with respect to dividends or redemptions or upon liquidation. 
 “Private Exchange Notes”
has the meaning set forth in the Appendix hereto. 
 “Productive Assets” means assets (including Capital Stock)
that are used or usable by the Company and its Restricted Subsidiaries in Permitted Businesses. 
 “Purchase Money
Note” means a promissory note of a Securitization Entity evidencing a line of credit, which may be irrevocable, from the Company or any Subsidiary of the Company in connection with a Qualified Securitization Transaction to a Securitization
Entity, which note shall be repaid from cash available to the Securitization Entity, other than amounts required to be established as reserves pursuant to agreements, amounts paid to investors in respect of interest and principal and amounts paid in
connection with the purchase of newly generated receivables or newly acquired equipment. 
 “Qualified Capital
Stock” means any Capital Stock that is not Disqualified Capital Stock. 
 “Qualified Proceeds” means
assets that are used or useful in, or Capital Stock of any Person engaged in, a Permitted Business; provided that the fair market value of any such assets or Capital Stock shall be determined by the Board of Directors of the Company in good
faith. 
  

 18 

 “Qualified Securitization Transaction” means any transaction or series of
transactions that may be entered into by the Company or any of its Restricted Subsidiaries pursuant to which the Company or any of its Subsidiaries may sell, convey or otherwise transfer to (i) a Securitization Entity (in the case of a transfer
by the Company or any of its Restricted Subsidiaries); and (ii) any other Person (in the case of a transfer by a Securitization Entity), or may grant a security interest in any accounts receivable or equipment (whether now existing or arising
or acquired in the future) of the Company or any of its Restricted Subsidiaries, and any assets related thereto including, without limitation, all collateral securing such accounts receivable and equipment, all contracts and contract rights and all
guarantees or other obligations in respect of such accounts receivable and equipment, proceeds of such accounts receivable and equipment and other assets (including contract rights) which are customarily transferred or in respect of which security
interests are customarily granted in connection with assets securitization transactions involving accounts receivable and equipment. 
 “Rating Agencies” means Moody’s and S&P or, if Moody’s or S&P or both shall not make a rating on the Notes publicly available, a nationally recognized statistical rating agency or agencies, as the case may
be, selected by the Company that shall be substituted for Moody’s or S&P or both, as the case may be. 
 “Refinance” means, in respect of any security or Indebtedness, to refinance, extend, renew, refund, repay, prepay, redeem, defease or retire, or to issue a security or Indebtedness in exchange or replacement for, such
security or Indebtedness in whole or in part. “Refinanced” and “Refinancing” shall have correlative meanings. 
 “Refinancing Indebtedness” means any Refinancing, modification, replacement, restatement, refunding, deferral, extension, substitution, supplement, reissuance or resale of existing or future Indebtedness existing on the
Relevant Date or thereafter incurred (other than intercompany Indebtedness), including any additional Indebtedness incurred to pay interest or premiums required by the instruments governing such then-existing or thereafter-incurred future
Indebtedness as in effect at the time of issuance thereof (“Required Premiums”) and fees in connection therewith; provided that any such event shall not (i) directly or indirectly result in an increase in the aggregate
principal amount of Permitted Indebtedness (except to the extent such increase is a result of a simultaneous incurrence of additional Indebtedness (A) to pay Required Premiums and related fees or (B) otherwise permitted to be incurred
under this Indenture); and (ii) create Indebtedness with a Weighted Average Life to Maturity at the time such Indebtedness is incurred that is less than the Weighted Average Life to Maturity at such time of the Indebtedness being refinanced,
modified, replaced, renewed, restated, refunded, deferred, extended, substituted, supplemented, reissued or resold. 
 “Registration Rights Agreement” means the Registration Rights Agreement, dated as of the Issue Date by and among the Company, Holdings, the Guarantors and Credit Suisse Securities (USA) LLC, as representative of the initial
purchasers. 
 “Related Party” with respect to any Permitted Holder means (i)(A) any spouse, sibling,
parent or child of such Permitted Holder; or (B) the estate of any Permitted Holder during any period in which such estate holds Capital Stock of the Company for the benefit of any Person referred to in clause (i)(A) or (ii) any
trust, corporation, partnership, limited liability

  

 19 

 
company or other entity, the beneficiaries, stockholders, partners, owners or Persons beneficially owning an interest of more than 50% of which consist of, or the sole managing partner or
managing member of which is, one or more Permitted Holders and/or such other Persons referred to in the immediately preceding clause (i). 
 “Relevant Date” means June 23, 2006. 
 “Representative” means the indenture trustee or other trustee, agent or representative in respect of any Designated Senior Debt; provided that if, and for so long as, any Designated Senior Debt lacks such a
representative, then the Representative for such Designated Senior Debt shall at all times constitute the holders of a majority in outstanding principal amount of such Designated Senior Debt in respect of any Designated Senior Debt. 
 “Required Premiums” has the meaning set forth in the definition of Refinancing Indebtedness. 
 “Responsible Officer,” when used with respect to the Trustee, means any officer within the Corporate Trust Administration
of the Trustee (or any successor group of the Trustee) who has direct responsibility for the administration of this Indenture and means, with respect to a particular corporate trust matter, any other officer to whom such matter is referred because
of his knowledge of and familiarity with the particular subject. 
 “Restricted Subsidiary” of any Person means
any Subsidiary of such Person which at the time of determination is not an Unrestricted Subsidiary. 
 “S&P” means Standard & Poor’s, a division of the McGraw-Hill Companies, Inc., or any successor thereto. 
 “Sale and Leaseback Transaction” means any direct or indirect arrangement with any Person or to which any such Person is a party, providing for the leasing to the Company or a Restricted
Subsidiary of any property, whether owned by the Company or any Restricted Subsidiary at the Relevant Date or later acquired, which has been or is to be sold or transferred by the Company or such Restricted Subsidiary to such Person or to any other
Person from whom funds have been or are to be advanced by such Person on the security of such Property. 
 “SEC” means the U.S. Securities and Exchange Commission. 
 “Secured Debt” means any
Indebtedness secured by a Lien. 
 “Securities Act” means the Securities Act of 1933, as amended. 

“Securitization Entity” means a Wholly Owned Subsidiary of the Company (or another Person in which the Company or any
Subsidiary of the Company makes an Investment and to which the Company or any Subsidiary of the Company transfers accounts receivable or equipment and related assets) which engages in no activities other than in connection with the financing of
accounts receivable or equipment and which is designated by the Board of Directors of the Company (as provided below) as a Securitization Entity (i) no portion of the Indebtedness or any other Obligations (contingent or otherwise) of which
(A) is guaranteed by the Company

  

 20 

 
or any Restricted Subsidiary of the Company (excluding guarantees of Obligations (other than the principal of, and interest on, Indebtedness) pursuant to Standard Securitization Undertakings);
(B) is recourse to or obligates the Company or any Restricted Subsidiary of the Company in any way other than pursuant to Standard Securitization Undertakings; or (C) subjects any property or asset of the Company or any Restricted
Subsidiary of the Company, directly or indirectly, contingently or otherwise, to the satisfaction thereof, other than pursuant to Standard Securitization Undertakings; (ii) with which neither the Company nor any Restricted Subsidiary of the
Company has any material contract, agreement, arrangement or understanding other than on terms no less favorable to the Company or such Restricted Subsidiary than those that might be obtained at the time from Persons that are not Affiliates of the
Company, other than fees payable in the ordinary course of business in connection with servicing receivables of such entity; and (iii) to which neither the Company nor any Restricted Subsidiary of the Company has any obligations to maintain or
preserve such entity’s financial condition or cause such entity to achieve certain levels of operating results. 
 Any such
designation by the Board of Directors of the Company shall be evidenced to the Trustee by filing with the Trustee a certified copy of the Board Resolution of the Company giving effect to such designation and an Officers’ Certificate certifying
that such designation complied with the foregoing conditions. 
 “Senior Debt” means the principal of, premium,
if any, and interest (including any interest accruing subsequent to the filing of a petition of bankruptcy at the rate provided for in the documentation with respect thereto, whether or not such interest is an allowed claim under applicable law) on,
any Indebtedness of the Company, Holdings or any Guarantor, whether outstanding on the Relevant Date or thereafter created, incurred or assumed, unless, in the case of any particular Indebtedness, the instrument creating or evidencing the same or
pursuant to which the same is outstanding expressly provides that such Indebtedness shall be subordinate or pari passu in right of payment to the Notes or the Guarantees, as the case may be. Without limiting the generality of the foregoing,
“Senior Debt” shall also include the principal of, premium, if any, interest (including any interest accruing subsequent to the filing of a petition of bankruptcy at the rate provided for in the documentation with respect thereto, whether
or not such interest is an allowed claim under applicable law) on, and all other amounts owing in respect of: (x) all monetary obligations of every nature of the Company, Holdings or any Guarantor under the Credit Facility, including, without
limitation, obligations to pay principal and interest, reimbursement obligations under letters of credit, fees, expenses and indemnities, (y) all Interest Swap Obligations (and guarantees thereof) and (z) all obligations (and guarantees
thereof) under Currency Agreements and Hedging Agreements, in each case whether outstanding on the Relevant Date or thereafter incurred. 
 Notwithstanding the foregoing, “Senior Debt” shall not include (i) any Indebtedness of the Company, Holdings or a Guarantor to the Company, Holdings or to a Subsidiary of the Company,
(ii) any Indebtedness of the Company, Holdings or any Guarantor to, or guaranteed by the Company, Holdings or any Guarantor on behalf of, any shareholder, director, officer or employee of the Company, Holdings or any Subsidiary of the Company
(including, without limitation, amounts owed for compensation) other than a shareholder who is also a lender (or an Affiliate of a lender) under the Credit Facility, (iii) any amounts payable or other liability to trade creditors arising in the
ordinary course of business (including guarantees

  

 21 

 
thereof or instruments evidencing such liabilities but excluding secured purchase money obligations); (iv) Indebtedness represented by Disqualified Capital Stock, (v) any liability for
Federal, state, local or other taxes owed or owing by the Company, Holdings or any of the Guarantors, (vi) that portion of any Indebtedness incurred either in violation of Section 4.09 hereof or, with respect to any Indebtedness incurred
after the Relevant Date but prior to the Issue Date, in violation of Section 4.09 in the indenture for the 2006 Notes (but, as to any such obligation, no such violation shall be deemed to exist for purposes of this clause (vi) if the
holder(s) of such obligation or their representative and the Trustee (or the trustee for the 2006 Notes, as applicable) shall have received an Officers’ Certificate of the Company to the effect that the incurrence of such Indebtedness does
not (or in the case of revolving credit indebtedness, that the incurrence of the entire committed amount thereof at the date on which the initial borrowing thereunder is made would not) violate such provisions of this Indenture or the indenture for
the 2006 Notes, as applicable), (vii) Indebtedness which, when incurred and without respect to any election under Section 1111(b) of Title 11, United States Code, is without recourse to the Company, Holdings or any of the Guarantors,
as applicable, and (viii) any Indebtedness which is, by its express terms, subordinated in right of payment to any other Indebtedness of the Company, Holdings or any of the Guarantors. 
 “Senior Subordinated Debt” means with respect to a Person, the Notes and the 2006 Notes (in the case of the Company), a
Guarantee or the guarantee of the 2006 Notes (in the case of a Guarantor or Holdings) and any other Indebtedness of such Person that specifically provides that such Indebtedness is to rank pari passu with the Notes or such Guarantee, as the
case may be, in right of payment and is not subordinated by its terms in right of payment to any Indebtedness or other obligation of such Person which is not Senior Debt of such Person. 
 “Significant Subsidiary,” with respect to any Person, means any Restricted Subsidiary of such Person that satisfies the
criteria for a “significant subsidiary” set forth in Rule 1.02(w) of Regulation S-X under the Securities Act. 
 “Sponsor” means Warburg Pincus LLC and its Affiliates. 
 “Standard Securitization
Undertakings” means representations, warranties, covenants and indemnities entered into by the Company or any Subsidiary of the Company which are reasonably customary, as determined in good faith by the Board of Directors of the Company, in
an accounts receivable or equipment transaction. 
 “Stockholders’ Agreement” means the Stockholders’
Agreement dated as of July 22, 2003, by and among TD Holding Corporation (now known as TransDigm Group Incorporated) and the other parties named therein. 
 “Subsidiary” with respect to any Person, means (i) any corporation of which the outstanding Capital Stock having at least a majority of the votes entitled to be cast in the election
of directors under ordinary circumstances shall at the time be owned, directly or indirectly, by such Person; or (ii) any other Person of which at least a majority of the voting interest under ordinary circumstances is at the time, directly or
indirectly, owned by such Person. 
  

 22 

 “TIA” means the Trust Indenture Act of 1939 (15 U.S.C. §§
77aaa-77bbbb) as in effect on the date on which this Indenture is qualified under the TIA. 
 “Total Assets”
means, as of any date, the total consolidated assets of the Company and its Restricted Subsidiaries, as set forth on the Company’s most recently available internal consolidated balance sheet as of such date. 
 “Transaction Date” has the meaning set forth in the definition of Consolidated Fixed Charge Coverage Ratio. 
 “Transactions” means the offering of 2006 Notes on the Relevant Date, the tender offer for the Existing Notes, borrowings
made on the Relevant Date pursuant to the Credit Facility and the repayment of Indebtedness of the Company and Holdings with the proceeds of such borrowings and issuance of the 2006 Notes (including the tender offer). 
 “Transfer Restricted Notes” has the meaning set forth in the Appendix hereto. 
 “Trustee” means the party named as such above until a successor replaces it in accordance with the applicable provisions of
this Indenture and thereafter means the successor serving hereunder. 
 “Unrestricted Subsidiary” of any Person
means (i ) any Subsidiary of such Person that at the time of determination shall be, or continue to be, designated an Unrestricted Subsidiary by the Board of Directors of such Person in the manner provided below; and (ii) any Subsidiary of an
Unrestricted Subsidiary. 
 The Board of Directors of the Company may designate any Subsidiary (including any newly-acquired or
newly-formed Subsidiary) to be an Unrestricted Subsidiary unless such Subsidiary owns any Capital Stock of, or owns or holds any Lien on any property of, the Company or any other Subsidiary of the Company that is not a Subsidiary of the Subsidiary
to be so designated or another Unrestricted Subsidiary; provided that (i) the Company certifies to the Trustee that such designation complies with Section 4.07 hereof, and (ii) each Subsidiary to be so designated and each of
its Subsidiaries has not at the time of designation, and does not thereafter, create, incur, issue, assume, guarantee or otherwise become directly or indirectly liable with respect to any Indebtedness pursuant to which the lender has recourse to any
of the assets of the Company or any of its Restricted Subsidiaries. The Board of Directors of the Company may designate any Unrestricted Subsidiary to be a Restricted Subsidiary only if (x) immediately after giving effect to such designation,
the Company is able to incur at least $1.00 of additional Indebtedness (other than Permitted Indebtedness) in compliance with Section 4.09 hereof and (y) immediately before and immediately after giving effect to such designation, no
Default or Event of Default shall have occurred and be continuing. Any such designation by the Board of Directors of the Company shall be evidenced by a Board Resolution giving effect to such designation and an Officers’ Certificate certifying
that such designation complied with the foregoing provisions. 
 Actions taken by an Unrestricted Subsidiary shall not be deemed
to have been taken, directly or indirectly, by the Company or any Restricted Subsidiary. 
  

 23 

 “Weighted Average Life to Maturity” means, when applied to any Indebtedness
at any date, the number of years obtained by dividing (i) the then-outstanding aggregate principal amount of such Indebtedness into (ii) the sum of the total of the products obtained by multiplying: (A) the amount of each
then-remaining installment, sinking fund, serial maturity or other required payment of principal, including payment at final maturity, in respect thereof by (B) the number of years (calculated to the nearest one-twelfth) which will elapse
between such date and the making of such payment. 
 “Wholly Owned Subsidiary” of any Person means any
Subsidiary of such Person of which all the outstanding voting securities (other than in the case of a Restricted Subsidiary that is incorporated in a jurisdiction other than a State in the United States of America or the District of Columbia,
directors’ qualifying shares or an immaterial amount of shares required to be owned by other Persons pursuant to applicable law) are owned by such Person or any Wholly Owned Subsidiary of such Person. 
 SECTION 1.02. Other Definitions. 
  

			
	 Term
	  	 Defined in
Section

	“Acceleration Notice”	  	6.02
	“Affiliate Transaction”	  	4.11
	“Appendix”	  	2.01
	“Authentication Order”	  	2.02
	“Blockage Notice”	  	10.03, 12.03
	“Change of Control Offer”	  	4.15
	“Change of Control Payment Date”	  	4.15
	“Covenant Defeasance”	  	8.03
	“Covenant Suspension Event”	  	4.19
	“Event of Default”	  	6.01
	“Guaranteed Obligations”	  	11.01
	“incur”	  	4.09
	“Initial Lien”	  	4.12
	“Legal Defeasance”	  	8.02
	“Net Proceeds Offer”	  	4.10
	“Net Proceeds Offer Amount”	  	4.10
	“Net Proceeds Offer Payment Date”	  	4.10
	“Net Proceeds Offer Trigger Date”	  	4.10
	“Offer Period”	  	3.09
	“pay the Notes”	  	10.03
	“pay its Guarantee”	  	12.03
	“Paying Agent”	  	2.03
	“Payment Blockage Period”	  	10.03, 12.03
	“Payment Default”	  	10.03, 12.03
	“Purchase Date”	  	3.09
	“Reference Date”	  	4.07
	“Registrar”	  	2.03
	“Restricted Payment”	  	4.07

  

 24 

			
	 Term
	  	 Defined in
Section

	“Reversion Date”	  	4.19
	“Surviving Entity”	  	5.01
	“Suspended Covenants”	  	4.19
	“Suspension Date”	  	4.19

 SECTION 1.03. Trust Indenture Act Definitions. 
 Whenever this Indenture refers to a provision of the TIA, the provision is incorporated by reference in and made a part of this Indenture.

 The following TIA terms used in this Indenture have the following meanings: 
 “indenture securities” means the Notes; 
 “indenture trustee” means the Trustee; and 
 “obligor” on the Notes and the Guarantees means the Company, Holdings and the Guarantors, respectively, and any successor obligor upon the Notes and the Guarantees, respectively. 
 All other terms used in this Indenture that are defined by the TIA, defined by TIA reference to another statute or defined by SEC
rule under the TIA have the meanings so assigned to them. 
 SECTION 1.04. Rules of Construction. 
 Unless the context otherwise requires: 
 (1) a term has the meaning assigned to it; 
 (2) an accounting
term not otherwise defined has the meaning assigned to it in accordance with GAAP; 
 (3) “or” is not
exclusive; 
 (4) words in the singular include the plural, and in the plural include the singular; 

(5) provisions apply to successive events and transactions; 
 (6) references to sections of or rules under the Securities Act shall be deemed to include substitute, replacement or
successor sections or rules adopted by the SEC from time to time; and 
 (7) references in this Indenture,
in any context, to any interest or other amount payable on or with respect to the Notes shall be deemed to include any Additional Interest that is payable pursuant to the Registration Rights Agreement. 
  

 25 

 ARTICLE II 
 THE NOTES 
 SECTION 2.01. Form and Dating. 
 Provisions relating to the Initial Notes, the Private Exchange Notes and the Exchange Notes are set forth in the Rule 144A/Regulation S
Appendix attached hereto (the “Appendix”) which is hereby incorporated in and expressly made part of this Indenture. The Initial Notes and the Trustee’s certificate of authentication with respect thereto shall be substantially
in the form of Exhibit A to the Appendix, which is hereby incorporated in and expressly made a part of this Indenture. The Exchange Notes, the Private Exchange Notes and the Trustee’s certificate of authentication with respect thereto
shall be substantially in the form of Exhibit B to the Appendix, which is hereby incorporated in and expressly made a part of this Indenture. The Notes may have notations, legends or endorsements required by law, stock exchange rule, agreements
to which the Company is subject, if any, or usage (provided that any such notation, legend or endorsement is in a form acceptable to the Company). Each Note shall be dated the date of its authentication. The terms of the Notes set forth in
the Appendix and Exhibits A and B to the Appendix are part of the terms of this Indenture. 
 SECTION 2.02. Execution and
Authentication. 
 Two Officers shall sign the Notes for the Company by manual or facsimile signature. 
 If an Officer whose signature is on a Note no longer holds that office at the time the Trustee authenticates the Note, the Note shall be
valid nevertheless. 
 A Note shall not be valid until an authorized signatory of the Trustee manually signs the certificate of
authentication on the Note. The signature shall be conclusive evidence that the Note has been authenticated under this Indenture. 
 On the Issue Date, the Trustee shall authenticate and deliver $425 million of 7 3/
4% Senior Subordinated Notes due 2014 and, at any time and from time to time thereafter, the Trustee shall authenticate and deliver Notes for original issue in an
aggregate principal amount specified in such order, in each case upon a written order of the Company signed by two Officers or by an Officer and an Assistant Secretary of the Company (each an “Authentication Order”). Such order
shall specify the amount of the Notes to be authenticated and the date on which the original issue of Notes is to be authenticated, whether the Notes are to be Initial Notes, Additional Notes, Exchange Notes or Private Exchange Notes or such other
information as the Trustee shall reasonably request and, in the case of an issuance of Additional Notes pursuant to Section 2.14 after the Issue Date, shall certify that such issuance is in compliance with Section 4.09. 

The Notes shall be issued only in registered form, without coupons and only in denominations of $2,000 and integral multiples of $1,000
in excess thereof. 
  

 26 

 The Trustee may appoint an authenticating agent acceptable to the Company to authenticate
the Notes. Unless limited by the terms of such appointment, an authenticating agent may authenticate Notes whenever the Trustee may do so. Each reference in this Indenture to authentication by the Trustee includes authentication by such agent. An
authenticating agent has the same rights as the Registrar or any Paying Agent or agent for service of notices and demands. 
 In
authenticating such Notes, and accepting the additional responsibilities under this Indenture in relation to such Notes, the Trustee shall receive, and shall be fully protected in relying upon: 
 (a) A copy of the resolution or resolutions of the Board of Directors in or pursuant to which the terms and form of the Notes were
established, certified by the Secretary or an Assistant Secretary of the Company, to have been duly adopted by the Board of Directors and to be in full force and effect as of the date of such certificate, and if the terms and form of such Notes are
established by an Officers’ Certificate pursuant to general authorization of the Board of Directors, such Officers’ Certificate; 
 (b) an executed supplemental indenture, if any; 
 (c) an Officers’
Certificate delivered in accordance with Section 13.05 hereof; and 
 (d) an Opinion of Counsel which shall state that the
Notes have been duly authorized by all necessary corporate action of the Company and, when executed, issued and authenticated in accordance with the terms of the Indenture and delivered by the Trustee, will be the legally valid and binding
obligations of the Company, enforceable against the Company in accordance with their terms, subject to any conditions and qualifications specified in such Opinion of Counsel. 
 SECTION 2.03. Registrar and Paying Agent. 
 The Company shall maintain an office or agency where Notes may be presented for registration of transfer or for exchange (the “Registrar”) and an office or agency where Notes may be
presented for payment (the “Paying Agent”). The Registrar shall keep a register of the Notes and of their registration of transfer and exchange. The Company may have one or more additional paying agents. The term “Paying
Agent” includes any additional paying agent. The Company may change any Paying Agent or the Registrar without notice to any Holder. 
 The Company shall enter into an appropriate agency agreement with the Registrar or any Paying Agent not a party to this Indenture, which shall incorporate the terms of the TIA. The agency agreement shall
implement the provisions of this Indenture that relate to such agent. The Company shall notify the Trustee in writing of the name and address of any such agent. If the Company fails to appoint or maintain a Registrar or Paying Agent, the Trustee
shall act as such and shall be entitled to appropriate compensation therefor pursuant to Section 7.07. The Company or any Wholly Owned Subsidiary incorporated or organized within the United States of America may act as Paying Agent, Registrar
or transfer agent. 
  

 27 

 The Company initially appoints the Depository (as defined in the Appendix) to act as
depositary with respect to the Global Notes (as defined in the Appendix). 
 The Company initially appoints the Trustee as
Registrar and Paying Agent in connection with the Notes. The Registrar and Paying Agent shall be entitled to the rights and immunities of the Trustee hereunder. 
 SECTION 2.04. Paying Agent to Hold Money in Trust. 
 Prior to
10:00 a.m., New York time, on or prior to each due date of the principal, premium, if any, and interest on any Note, the Company shall deposit with the Paying Agent a sum sufficient to pay such principal, premium and interest when so becoming
due. The Company shall require each Paying Agent (other than the Trustee) to agree in writing that the Paying Agent shall hold in trust for the benefit of Holders or the Trustee all money held by the Paying Agent for the payment of principal of,
premium, if any, or interest on the Notes and shall notify the Trustee in writing of any default by the Company in making any such payment. While any such default continues, the Trustee may require a Paying Agent to pay all money held by it to the
Trustee. If the Company or a Subsidiary acts as Paying Agent, it shall segregate the money held by it as Paying Agent and hold it as a separate trust fund. The Company at any time may require a Paying Agent to pay all money held by it to the Trustee
and to account for any funds disbursed by the Paying Agent. Upon complying with this Section, the Paying Agent (if other than the Company or a Subsidiary of the Company) shall have no further liability for the money delivered to the Trustee. Upon
any bankruptcy or reorganization proceedings relating to the Company, the Trustee shall serve as Paying Agent for the Notes. 
 SECTION 2.05. Holder Lists. 
 The Trustee shall preserve in as current a form as is reasonably practicable the
most recent list available to it of the names and addresses of Holders and shall otherwise comply with TIA § 312(a). If the Trustee is not the Registrar, the Company shall furnish to the Trustee, at least seven Business Days before each
interest payment date and at such other times as the Trustee may request in writing, a list in such form and as of such date as the Trustee may reasonably require of the names and addresses of Holders, and the Company shall otherwise comply with TIA
§312(a). 
 SECTION 2.06. Transfer and Exchange. 
 (a) The Notes shall be issued in registered form and shall be transferable only upon the surrender of a Note being transferred for
registration of transfer. When a Note is presented to the Registrar with a request to register a transfer, such Registrar shall register the transfer as requested if the requirements of this Indenture and Section 8-401(a) of the Uniform
Commercial Code are met. When Notes are presented to the Registrar with a request to exchange them for an equal principal amount of Notes of other denominations, the Registrar shall make the exchange as requested if the same requirements are met. No
service charge shall be made for any registration of transfer or exchange or redemption of the Notes, but the Company may require payment of a sum sufficient to cover any transfer tax or similar governmental charge payable in connection therewith
(other than any such transfer taxes or other similar governmental charge payable upon exchange or transfer pursuant to Sections 2.10, 3.06, 3.09, 4.10, 4.15 or 9.05 hereof). 
  

 28 

 (b) The Registrar shall not be required to register the transfer of or exchange any Note
selected for redemption in whole or in part, except the unredeemed portion of any Note being redeemed in part. 
 (c) All Notes
issued upon any registration of transfer or exchange of Notes shall be the valid obligations of the Company, evidencing the same debt, and entitled to the same benefits under this Indenture, as the Notes surrendered upon such registration of
transfer or exchange. 
 (d) The Company shall not be required (A) to issue, to register the transfer of or to exchange any
Notes during a period beginning at the opening of business 15 days before the day of the mailing of notice of redemption under Section 3.03 hereof and ending at the close of business on such day, (B) to register the transfer of or to
exchange any Note so selected for redemption in whole or in part, except the unredeemed portion of any Note being redeemed in part or (c) to register the transfer of or to exchange a Note between a record date and the next succeeding Interest
Payment Date. 
 (e) Any Holder of a Global Note shall, by acceptance of such Global Note, agree that transfers of beneficial
interests in such Global Note may be effected only through a book-entry system maintained by (a) the Holder of such Global Note (or its agent or the person on whose behalf the Global Note is held) or (b) any Holder of a beneficial interest
in such Global Note, and that ownership of beneficial interest in such Global Note shall be required to be reflected in a book entry. 
 (f) Prior to due presentment for the registration of a transfer of any Note, the Trustee, any Paying Agent, the Registrar and the Company may deem and treat the Person in whose name any Note is registered as the absolute owner of such Note
for the purpose of receiving payment of principal of, premium, if any, and interest on such Notes and for all other purposes, and none of the Trustee, any Paying Agent, the Registrar or the Company shall be affected by notice to the contrary.

 (g) None of the Company, the Trustee, any agent of the Company or the Trustee (including any Paying Agent or Registrar) will
have any responsibility or liability for any aspect of the records relating to or payments made on account of beneficial ownership interests of a global Note or for maintaining, supervising or reviewing any records relating to such beneficial
ownership interests. 
 (h) The Trustee shall have no obligation or duty to monitor, determine or inquire as to compliance with
any restrictions on transfer imposed under this Indenture or under applicable law with respect to any transfer of any interest in any Note (including any transfers between or among depositary participants or beneficial owners of interest in any
global security) other than to require delivery of such certificates and other documentation or evidence as are expressly required by, and to do so if and when expressly required by the terms of, this Indenture, and to examine the same to determine
substantial compliance as to form with the express requirements hereof. 
  

 29 

 SECTION 2.07. Replacement Notes. 
 If a mutilated Note is surrendered to the Registrar, or if the Holder of a Note claims that the Note has been lost, destroyed or wrongfully
taken, the Company shall issue and the Trustee shall authenticate a replacement Note if the requirements of Section 8-405 of the Uniform Commercial Code are met and the Holder satisfies any other reasonable requirements of the Trustee. If
required by the Trustee or the Company, such Holder shall furnish an indemnity or a security bond sufficient in the judgment of the Company and the Trustee to protect the Company, the Trustee, the Paying Agent and the Registrar from any loss which
any of them may suffer if a Note is replaced. The Company and the Trustee may charge the Holder for their expenses in replacing a Note. 
 Every replacement Note is an additional obligation of the Company and shall be entitled to all of the benefits of this Indenture equally and proportionally with all other Notes duly issued hereunder.

 SECTION 2.08. Outstanding Notes. 
 Notes outstanding at any time are all Notes authenticated by the Trustee except for those canceled by it, those reductions in the interest in a Global Note effected by the Trustee in accordance with the
provisions of this Indenture, those delivered to it for cancellation and those described in this Section as not outstanding. Except as set forth in Section 2.09 hereof, a Note does not cease to be outstanding because the Company or an Affiliate
of the Company holds the Note. 
 If a Note is replaced pursuant to Section 2.07 hereof, it ceases to be outstanding unless
the Trustee and the Company receive proof satisfactory to them that the replaced Note is held by a bona fide purchaser. 
 If
the principal amount of any Note is considered paid under Section 4.01 hereof, it ceases to be outstanding, and interest on it ceases to accrue. 
 If the Paying Agent (other than the Company, a Subsidiary or an Affiliate of any thereof) segregates and holds in trust, in accordance with this Indenture, on a redemption date or maturity date money
sufficient to pay all principal, premium, if any, and interest payable on that date with respect to the Notes (or portions thereof) to be redeemed or maturing, as the case may be, then, on and after that date, such Notes (or portions thereof) shall
cease to be outstanding, and interest on them shall cease to accrue. 
 SECTION 2.09. Treasury Notes. 
 In determining whether the Holders of the required principal amount of Notes have concurred in any direction, waiver or consent, Notes owned
by the Company, or by any Person directly or indirectly controlling or controlled by or under direct or indirect common control with the Company, shall be considered as though not outstanding, except that for the

  

 30 

 
purposes of determining whether the Trustee shall be protected in relying on any such direction, waiver or consent, only Notes that a Responsible Officer of the Trustee actually knows are so
owned shall be so disregarded. 
 SECTION 2.10. Temporary Notes. 
 Until Definitive Notes are ready for delivery, the Company may prepare, and the Trustee, upon receipt of an Authentication Order, shall
authenticate, temporary Notes. Temporary Notes shall be substantially in the form of Definitive Notes but may have variations that the Company considers appropriate for temporary Notes and as shall be reasonably acceptable to the Trustee. Without
unreasonable delay, the Company shall prepare, and the Trustee shall authenticate, Definitive Notes and deliver them in exchange for temporary Notes. Holders of temporary Notes shall be entitled to all of the benefits of this Indenture. 

SECTION 2.11. Cancellation. 
 The Company at any time may deliver Notes to the Trustee for cancellation. The Registrar and the Paying Agent shall forward to the Trustee any Notes surrendered to them for registration of transfer,
exchange or payment. The Trustee and no one else shall cancel (subject to the record retention requirements of the Exchange Act) all Notes surrendered for registration of transfer, exchange, payment, replacement or cancellation in accordance with
its customary procedures and, if requested in writing, deliver a certificate of such disposal to the Company unless the Company directs the Trustee in writing to deliver canceled Notes to the Company. The Company may not issue new Notes to replace
Notes that it has redeemed, paid or that have been delivered to the Trustee for cancellation. 
 SECTION 2.12. Defaulted
Interest. 
 If the Company defaults in a payment of interest on the Notes, the Company shall pay defaulted interest (plus
interest on such defaulted interest at the applicable interest rate on the Notes to the extent lawful) in any lawful manner. The Company may pay the defaulted interest to the Persons who are Holders on a subsequent special record date. The Company
shall fix or cause to be fixed any such special record date and payment date to the reasonable satisfaction of the Trustee (provided that no such special record date shall be less than 10 days prior to the related payment date for such
defaulted interest) and shall promptly mail or cause to be mailed to each Holder a notice that states the special record date, the related payment date and the amount of defaulted interest to be paid. 
 SECTION 2.13. CUSIP or ISIN Numbers. 
 The Company in issuing the Notes may use “CUSIP”, “ISIN” or other similar identification numbers (if then generally in use), and, if so, the Trustee shall use “CUSIP”,
“ISIN” or such other similar identification numbers in notices of redemption or repurchase as a convenience to Holders; provided, however, that any such notice may state that no representation is made as to the correctness of
such numbers either as printed on the Notes or as contained in any notice of a redemption and that reliance may be placed only on the other identification numbers printed on the Notes, and any such redemption shall not be affected by any defect in
or the omission of such numbers. The Company shall promptly notify the Trustee of any change in the “CUSIP”, “ISIN” or such other similar identification numbers. 
  

 31 

 SECTION 2.14. Issuance of Additional Notes. 
 The Company shall be entitled, subject to its compliance with Section 4.09, to issue Additional Notes under this Indenture which shall
have identical terms as the Initial Notes issued on the Issue Date, other than with respect to the date of issuance and issue price. The Initial Notes issued on the Issue Date, any Additional Notes and all Exchange Notes or Private Exchange Notes
issued in exchange therefor shall be treated as a single class for all purposes under this Indenture. 
 With respect to any
Additional Notes, the Company shall set forth in a Board Resolution and an Officers’ Certificate of the Company, a copy of each which shall be delivered to the Trustee, the following information: 
 (1) the aggregate principal amount of such Additional Notes to be authenticated and delivered pursuant to this Indenture; 

(2) the issue price, the issue date and the “CUSIP”, “ISIN” or other similar identification numbers of such
Additional Notes; provided, however, that no Additional Notes may be issued at a price that would cause such Additional Notes to have “original issue discount” within the meaning of Section 1273 of the Code; and

 (3) whether such Additional Notes shall be Transfer Restricted Notes and issued in the form of Initial Notes as set
forth in the Appendix to this Indenture or shall be issued in the form of Exchange Notes as set forth in Exhibit B to the Appendix. 
 ARTICLE III 
 Redemption And Prepayment 
 SECTION 3.01. Notices to Trustee. 
 If the Company elects to redeem Notes pursuant to the optional redemption provisions of Section 3.07 hereof, it shall furnish to the Trustee, at least 45 days but not more than 60 days before a
redemption date, an Officers’ Certificate setting forth (i) the redemption date, (ii) the redemption price and (iii) the “CUSIP”, “ISIN” or other similar identification numbers of the Notes to be redeemed.

 SECTION 3.02. Selection of Notes to Be Redeemed. 
 If less than all of the Notes are to be redeemed or purchased in an offer to purchase at any time, the Trustee shall select the Notes to be
redeemed or purchased among the Holders in compliance with the requirements of the principal national securities exchange, if any, on which the Notes are listed or, if the Notes are not so listed, on a pro rata basis, by lot or in accordance
with any other method the Trustee considers fair and appropriate. In the event of partial redemption by lot, the particular Notes to be redeemed shall be selected, unless otherwise provided herein, not less than 30 nor more than 60 days prior to the
redemption date by the Trustee from the outstanding Notes not previously called for redemption. 
  

 32 

 The Trustee shall promptly notify the Company in writing of the Notes selected for
redemption and, in the case of any Note selected for partial redemption, the principal amount to be redeemed. Notes and portions of Notes selected shall be in amounts of $2,000 and integral multiples of $1,000 in excess thereof. The provisions of
this Indenture that apply to Notes called for redemption also apply to portions of Notes called for redemption. 
 SECTION 3.03.
Notice of Redemption. 
 Subject to the provisions of Section 3.09 hereof, at least 30 days but not more than 60
days before a redemption date, the Company shall mail or cause to be mailed, by first class mail, a notice of redemption to each Holder whose Notes are to be redeemed at its registered address. 
 The notice shall identify the Notes to be redeemed, including “CUSIP”, “ISIN” or other similar identification numbers,
if any, and shall state: 
 (a) the redemption date; 
 (b) the redemption price; 
 (c) if any Note is being redeemed in part, the portion of the principal amount of such Note to be redeemed and that, after the redemption date upon surrender of such Note, a new Note or Notes in principal
amount equal to the unredeemed portion shall be issued upon cancellation of the original Note; 
 (d) the name
and address of the Paying Agent; 
 (e) that Notes called for redemption must be surrendered to the Paying Agent
to collect the redemption price; 
 (f) that, unless the Company defaults in making such redemption payment,
interest on Notes called for redemption ceases to accrue on and after the redemption date; 
 (g) the paragraph
of the Notes and/or Section of this Indenture pursuant to which the Notes called for redemption are being redeemed; and 
 (h) that no representation is made as to the correctness or accuracy of the “CUSIP”, “ISIN” or other similar identification number, if any, listed in such notice or printed on the
Notes. 
 At the Company’s request, the Trustee shall give the notice of redemption in the Company’s name and at its
expense; provided, however, that the Company shall have delivered to the Trustee, at least 5 days prior to the date the Company wishes the notice to be given, an Officers’ Certificate requesting that the Trustee give such notice
and setting forth the information to be stated in such notice as provided in the preceding paragraph. 
  

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 SECTION 3.04. Effect of Notice of Redemption. 
 Once notice of redemption is mailed in accordance with Section 3.03 hereof, Notes called for redemption become irrevocably due and
payable on the redemption date at the redemption price. A notice of redemption may not be conditional. 
 SECTION 3.05.
Deposit of Redemption Price. 
 Prior to 10:00 a.m. New York time on the redemption date, the Company shall deposit
with the Trustee or with the Paying Agent money sufficient to pay the redemption price of, and accrued interest on, all Notes to be redeemed on that date. The Trustee or the Paying Agent shall promptly return to the Company any money deposited with
the Trustee or the Paying Agent by the Company in excess of the amounts necessary to pay the redemption price of, and accrued interest on, all Notes to be redeemed. 
 If the Company complies with the provisions of the preceding paragraph, on and after the redemption date, interest shall cease to accrue on the Notes or the portions of Notes called for redemption. If a
Note is redeemed on or after an interest record date but on or prior to the related interest payment date, then any accrued and unpaid interest shall be paid to the Person in whose name such Note was registered at the close of business on such
record date. If any Note called for redemption shall not be so paid upon surrender for redemption because of the failure of the Company to comply with the preceding paragraph, interest shall be paid on the unpaid principal, from the redemption date
until such principal is paid, and, to the extent lawful, on any interest not paid on such unpaid principal, in each case at the applicable interest rate on the Notes. 
 SECTION 3.06. Notes Redeemed in Part. 
 Upon surrender of a Note that is
redeemed in part, the Company shall issue and, upon the Company’s written request, the Trustee shall authenticate for the Holder at the expense of the Company, a new Note equal in principal amount to the unredeemed portion of the Note
surrendered. 
 SECTION 3.07. Optional Redemption. 
 (a) On and after the date hereof, the Company may redeem the Notes (which includes Additional Notes, if any) at its option, in whole or in
part, upon not less than 30 nor more than 60 days’ notice, at the following redemption prices (expressed as percentages of the principal amount thereof) if redeemed during the twelve-month period commencing on July 15 of the year set forth
below: 
  

				
	 Year
	  	Percentage	 
	 2009
	  	105.813	% 
	 2010
	  	103.875	% 
	 2011
	  	101.938	% 
	 2012 and thereafter
	  	100.000	% 

  

 34 

 (b) Any redemption pursuant to this Section 3.07 shall be made pursuant to the
provisions of Sections 3.01 through 3.06 hereof. 
 SECTION 3.08. Mandatory Redemption; Open Market Purchases.

 The Company shall not be required to make any mandatory redemption or sinking fund payments with respect to the Notes. The
Company may at any time and from time to time purchase Notes in the open market or otherwise. 
 SECTION 3.09. Offer to
Purchase by Application of Net Proceeds Offer Amount. 
 In the event that, pursuant to Section 4.10 hereof, the
Company shall be required to commence a Net Proceeds Offer, it shall follow the procedures specified below. 
 The Net Proceeds
Offer shall remain open for a period of 20 Business Days following its commencement or such longer period as may be required by applicable law (the “Offer Period”). No later than five Business Days after the termination of the Offer
Period (the “Purchase Date”), the Company shall purchase the Net Proceeds Offer Amount (as defined in Section 4.10 hereof) or, if less than the Net Proceeds Offer Amount has been tendered, all Notes tendered in response to the
Net Proceeds Offer. Payment for any Notes so purchased shall be made in the same manner as interest payments are made. 
 If the
Purchase Date is on or after an interest record date and on or before the related interest payment date, any accrued and unpaid interest shall be paid to the Person in whose name a Note is registered at the close of business on such record date, and
no additional interest shall be payable to Holders who tender Notes pursuant to the Net Proceeds Offer. 
 Upon the commencement
of a Net Proceeds Offer, the Company shall send, by first class mail, a notice to the Trustee and each of the Holders. The notice shall contain all instructions and materials necessary to enable such Holders to tender Notes pursuant to the Net
Proceeds Offer. The Net Proceeds Offer shall be made to all Holders. The notice, which shall govern the terms of the Net Proceeds Offer, shall state: 
 (a) that the Net Proceeds Offer is being made pursuant to this Section 3.09 and Section 4.10 hereof and the length of time the Net Proceeds Offer shall remain open and, if the Net Proceeds Offer
is also made to holders of other Senior Subordinated Debt of the Company or a Restricted Subsidiary of the Company pursuant to Section 4.10 hereof, the notice shall identify such Senior Subordinated Debt and state that the Net Proceeds Offer is
also made to holders of such Senior Subordinated Debt; 
 (b) the Net Proceeds Offer Amount, the purchase price
and the Purchase Date; 
 (c) that any Note not tendered or accepted for payment shall continue to accrue
interest; 
  

 35 

 (d) that, unless the Company defaults in making such payment, any Note
accepted for payment pursuant to the Net Proceeds Offer shall cease to accrue interest after the Purchase Date; 
 (e) that Holders electing to have a portion of a Note purchased pursuant to a Net Proceeds Offer may only elect to have such Note purchased in denominations of $2,000 and integral multiples of $1,000 in excess thereof; 
 (f) that Holders electing to have a Note purchased pursuant to any Net Proceeds Offer shall be required to surrender the
Note, with the form entitled “Option of Holder to Elect Purchase” on the reverse of the Note completed, or transfer by book-entry transfer, to the Company, a depositary, if appointed by the Company, or a Paying Agent at the address
specified in the notice at least three days before the Purchase Date; 
 (g) that Holders shall be entitled to
withdraw their election if the Company, the depositary or the Paying Agent, as the case may be, receives, not later than the expiration of the Offer Period, a telegram, telex, facsimile transmission or letter setting forth the name of the Holder,
the principal amount of the Note the Holder delivered for purchase and a statement that such Holder is withdrawing its election to have such Note purchased; 
 (h) that, if the aggregate principal amount of Notes surrendered by Holders and other Senior Subordinated Debt surrendered
by the holders thereof exceeds the Offer Amount, the Company shall select the Notes and other Senior Subordinated Debt of the Company or a Restricted Subsidiary of the Company to be purchased on a pro rata basis (based on the amounts of Notes
and such other Senior Subordinated Debt tendered and with such adjustments as may be deemed appropriate by the Company so that only Notes or other Senior Subordinated Debt in denominations of $2,000 and integral multiples of $1,000 in excess
thereof, shall be purchased); and 
 (i) that Holders whose Notes were purchased only in part shall be issued
new Notes equal in principal amount to the unpurchased portion of the Notes surrendered (or transferred by book-entry transfer). 
 On or before the Purchase Date, the Company shall, to the extent lawful, accept for payment, on a pro rata basis to the extent necessary, the Net Proceeds Offer Amount of Notes and other Senior Subordinated Debt of the Company or a
Restricted Subsidiary of the Company or portions thereof tendered pursuant to the Net Proceeds Offer, or if less than the Net Proceeds Offer Amount has been tendered, all Notes and other Senior Subordinated Debt of the Company or a Restricted
Subsidiary of the Company or portions thereof tendered, and shall deliver to the Trustee an Officers’ Certificate stating that such Notes or such other Senior Subordinated Debt or portions thereof were accepted for payment by the Company in
accordance with the terms of this Section 3.09. The Company, the Depository or the Paying Agent, as the case may be, shall promptly (but in any case not later than five days after the Purchase Date) mail or deliver to each tendering Holder an
amount equal to the purchase price of the Notes tendered by such Holder and accepted by the Company for purchase, and the Company shall promptly issue a new Note, and the Trustee, upon written request from the Company, shall authenticate and mail or
deliver such new Note to such Holder, in a principal amount equal to

  

 36 

 
any unpurchased portion of the Note surrendered. Any Note not so accepted shall be promptly mailed or delivered by the Company to the Holder thereof. The Company shall publicly announce the
results of the Net Proceeds Offer on the Purchase Date. 
 Other than as specifically provided in this Section 3.09, any
purchase pursuant to this Section 3.09 shall be made pursuant to the provisions of Sections 3.01 through 3.06 hereof. 
 To the extent that the provisions of any securities laws or regulations conflict with this Section 3.09 or Section 4.10 hereof, the Company shall comply with the applicable securities laws and regulations and shall not be deemed
to have breached its obligations under this Section 3.09 or Section 4.10 hereof. 
 ARTICLE IV 
 COVENANTS 
 SECTION 4.01. Payment of Notes. 
 The Company shall pay or cause to be paid the principal amount, premium, if
any, and interest on the Notes on the dates and in the manner provided in the Notes. Principal amount, premium, if any, and interest shall be considered paid on the date due if the Paying Agent, if other than the Company or a Subsidiary thereof,
holds as of 10:00 a.m. New York time on the due date money deposited by the Company in immediately available funds and designated for and sufficient to pay all principal amount, premium, if any, and interest then due. The Company shall pay all
Additional Interest, if any, in the same manner on the same dates and in the amounts set forth in the Registration Rights Agreement. 
 The Company shall pay interest (including post-petition interest in any proceeding under any Bankruptcy Law) on overdue principal at a rate equal to the then applicable interest rate on the Notes to the extent lawful; it shall pay interest
(including postpetition interest in any proceeding under any Bankruptcy Law) on overdue installments of interest (without regard to any applicable grace period) at the same rate to the extent lawful. 
 SECTION 4.02. Maintenance of Office or Agency. 
 The Company shall maintain in the Borough of Manhattan, the City of New York, an office or agency (which may be an office of the Trustee or an affiliate of the Trustee or any Registrar) where Notes may be
surrendered for registration of transfer or for exchange and where notices and demands to or upon the Company in respect of the Notes and this Indenture may be served. The Company shall give prompt written notice to the Trustee of the location, and
any change in the location, of such office or agency. If at any time the Company shall fail to maintain any such required office or agency or shall fail to furnish the Trustee with the address thereof, such presentations, surrenders, notices and
demands may be made or served at the Corporate Trust Office of the Trustee. 
 The Company may also from time to time designate
one or more other offices or agencies where the Notes may be presented or surrendered for any or all such purposes and may from time to time rescind such designations; provided, however, that no such designation or

  

 37 

 
rescission shall in any manner relieve the Company of its obligation to maintain an office or agency in the Borough of Manhattan, the City of New York for such purposes. The Company shall
give prompt written notice to the Trustee of any such designation or rescission and of any change in the location of any such other office or agency. 
 The Company hereby designates the Corporate Trust Office of the Trustee as one such office or agency of the Company in accordance with Section 2.03 hereof. 
 SECTION 4.03. Reports. 
 (a) Whether or not required by the rules and regulations of the SEC, so long as any Notes are outstanding, the Company shall furnish to the Holders (i) all quarterly and annual financial information
that would be required to be contained in a filing with the SEC on Forms 10-Q and 10-K if the Company were required to file such forms, including a “Management’s Discussion and Analysis of Financial Condition and Results of
Operations” that describes the financial condition and results of operations of the Company and its consolidated Subsidiaries (showing in reasonable detail, either on the face of the financial statements or in the footnotes thereto and in
Management’s Discussion and Analysis of Financial Condition and Results of Operations, the financial condition and results of operations of the Company and its Restricted Subsidiaries separate from the financial condition and results of
operations of the Unrestricted Subsidiaries of the Company) and, with respect to the annual information only, a report thereon by the Company’s certified independent accountants and (ii) all current reports that would be required to be
filed with the SEC on Form 8-K if the Company were required to file such reports, in each case, within the time periods specified in the SEC’s rules and regulations. For so long as Holdings or another direct or indirect parent company
of the Company is a guarantor of the Notes, the Indenture will permit the Company to satisfy its obligations under the first sentence of this Section 4.03(a) by furnishing financial information relating to Holdings; provided that
the same is accompanied by consolidating information that explains in reasonable detail the differences between the information relating to Holdings, on the one hand, and the information relating to the Company and its Restricted Subsidiaries on a
stand-alone basis, on the other hand. In addition, following the consummation of the Registered Exchange Offer (as defined in the Appendix), whether or not required by the rules and regulations of the SEC, the Company shall file a copy of all
such information and reports with the SEC for public availability within the time periods specified in the SEC’s rules and regulations (unless the SEC will not accept such a filing) and make such information available to securities
analysts and prospective investors upon request. 
 (b) The Company shall at all times comply with TIA § 314(a).

 (c) For so long as any Notes remain outstanding, the Company and the Guarantors shall furnish to the Holders and to
securities analysts and prospective investors, upon their request, the information required to be delivered pursuant to Rule 144A(d)(4) under the Securities Act. 
 (d) Should the Company deliver to the Trustee any such information, reports or certificates or any annual reports, information, documents
and other reports pursuant to TIA § 314(a), delivery of such information, reports or certificates or any annual reports,

  

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information, documents and other reports to the Trustee is for informational purposes only, and the Trustee’s receipt of such shall not constitute constructive notice of any information
contained therein or determinable from information contained therein, including the Company’s compliance with any of its covenants hereunder (as to which the Trustee is entitled to rely exclusively on Officers’ Certificates). 

SECTION 4.04. Compliance Certificate. 
 (a) The Company and each Guarantor (to the extent that such Guarantor is so required under the TIA) shall deliver to the Trustee, within 90 days after the end of each fiscal year, an Officers’
Certificate stating that a review of the activities of the Company and its Subsidiaries during the preceding fiscal year has been made under the supervision of the signing Officers with a view to determining whether the Company has kept, observed,
performed and fulfilled its obligations under this Indenture and further stating, as to each such Officer signing such certificate, that, to the best of his or her knowledge, the Company has kept, observed, performed and fulfilled each and every
covenant contained in this Indenture and is not in default in the performance or observance of any of the terms, provisions and conditions of this Indenture (or, if a Default or Event of Default shall have occurred, describing all such Defaults or
Events of Default of which he or she may have knowledge and what action the Company is taking or proposes to take with respect thereto) and that, to the best of his or her knowledge, no event has occurred and remains in existence by reason of which
payments on account of the principal of or interest, if any, on the Notes is prohibited or if such event has occurred, a description of the event and what action the Company is taking or proposes to take with respect thereto. For purposes of this
paragraph, such compliance shall be determined without regard to any period of grace or requirement of notice provided under this Indenture. 
 (b) The Company shall, so long as any of the Notes are outstanding, deliver to the Trustee, forthwith upon any Officer becoming aware of any Default or Event of Default, an Officers’ Certificate
specifying such Default or Event of Default and what action the Company is taking or proposes to take with respect thereto. 
 SECTION 4.05. [Intentionally Omitted]. 
 SECTION 4.06. Stay, Extension and Usury Laws. 
 The Company and each of the Guarantors covenants (to the extent that it may lawfully do so) that it shall not at any time insist upon,
plead, or in any manner whatsoever claim or take the benefit or advantage of, any stay, extension or usury law wherever enacted, now or at any time hereafter in force, that may affect the covenants or the performance of this Indenture; and the
Company and each of the Guarantors (to the extent that it may lawfully do so) hereby expressly waives all benefit or advantage of any such law and covenants that it shall not, by resort to any such law, hinder, delay or impede the execution of any
power herein granted to the Trustee, but shall suffer and permit the execution of every such power as though no such law has been enacted. 
  

 39 

 SECTION 4.07. Restricted Payments. 
 The Company shall not, and shall not cause or permit any of its Restricted Subsidiaries to, directly or indirectly: 
 (1) declare or pay any dividend or make any distribution on, or in respect of, shares of the Company or any Restated
Subsidiary’s Capital Stock to holders of such Capital Stock (other than dividends or distributions payable in Qualified Capital Stock of the Company and dividends or distributions payable to the Company or a Restricted Subsidiary and other
than pro rata dividends or other distributions made by a Subsidiary that is not a Wholly Owned Subsidiary to minority stockholders (or owners of an equivalent interest in the case of a Subsidiary that is an entity other than a corporation));

 (2) purchase, redeem or otherwise acquire or retire for value any Capital Stock of the Company or of any
direct or indirect parent of the Company or of a Restricted Subsidiary of the Company held by any Affiliate of the Company (other than a Restricted Subsidiary of the Company) or any warrants, rights or options to purchase or acquire shares of any
class of such Capital Stock; 
 (3) make any principal payment on, purchase, defease, redeem, prepay, decrease
or otherwise acquire or retire for value, prior to any scheduled final maturity, scheduled repayment or scheduled sinking fund payment, any Indebtedness of the Company, or of any Guarantor, that is subordinate or junior in right of payment to the
Notes or any Guarantee, as applicable (other than (x) any Indebtedness permitted under clause (vi) of the definition of “Permitted Indebtedness” and (y) the purchase, defeasance or other acquisition of such Indebtedness
purchased in anticipation of satisfying a sinking fund obligation, principal installment or final maturity, in each case due within one year of such purchase, defeasance or other acquisition); or 
 (4) make any Investment (other than Permitted Investments) 
 (each of the foregoing actions set forth in clauses (1), (2), (3) and (4) being referred to as a “Restricted Payment”); if at the time of such Restricted Payment or immediately
after giving effect thereto: 
 (i) a Default or an Event of Default shall have occurred and be continuing; or

 (ii) the aggregate amount of Restricted Payments (including such proposed Restricted Payment) made subsequent
to the Relevant Date (other than Restricted Payments made pursuant to clauses (2), (3), (4), (5), (6), (7), (8), (9), (10) and (12) of the following paragraph) shall exceed the sum of, without duplication: 
 (v) 50% of the cumulative Consolidated Net Income (or if cumulative Consolidated Net Income shall be a loss, minus 100%
of such loss) of the Company earned subsequent to April 1, 2006 and on or prior to the date the Restricted Payment occurs (the “Reference Date”) (treating such period as a single accounting period); plus 
  

 40 

 (w) 100% of the aggregate net cash proceeds (including the fair market
value of property (as determined by the Company in good faith) other than cash that would constitute Marketable Securities or a Permitted Business) received by the Company from any Person (other than a Subsidiary of the Company) from the issuance
and sale subsequent to the Relevant Date and on or prior to the Reference Date of Qualified Capital Stock of the Company (other than Excluded Contributions); plus 
 (x) without duplication of any amounts included in clause (ii)(w) above, 100% of the aggregate net cash proceeds
of any equity contribution received subsequent to the Relevant Date by the Company from a holder of the Company’s Capital Stock; plus 
 (y) the amount by which Indebtedness of the Company is reduced on the Company’s balance sheet upon the conversion or exchange subsequent to the Relevant Date of any Indebtedness of the Company
for Qualified Capital Stock of the Company (less the amount of any cash, or the fair value of any other property, distributed by the Company upon such conversion or exchange); provided, however, that the foregoing amount shall not
exceed the net cash proceeds received by the Company or any Restricted Subsidiary from the sale of such Indebtedness (excluding net cash proceeds from sales to a Subsidiary of the Company or to an employee stock ownership plan or a trust established
by the Company or any of its Subsidiaries for the benefit of their employees); plus 
 (z) an amount
equal to the sum of (I) 100% of the aggregate net proceeds (including the fair market value of property other than cash that would constitute Marketable Securities or a Permitted Business) received by the Company or any Restricted Subsidiary
(A) from any sale or other disposition of any Investment (other than a Permitted Investment) in any Person (including an Unrestricted Subsidiary) made by the Company and its Restricted Subsidiaries and (B) representing the return of
capital or principal (excluding dividends and distributions otherwise included in Consolidated Net Income) with respect to such Investment and (II) the portion (proportionate to the Company’s equity interest in an Unrestricted Subsidiary)
of the fair market value of the net assets of an Unrestricted Subsidiary at the time such Unrestricted Subsidiary is designated a Restricted Subsidiary; provided, however, that, in the case of item (II), the foregoing sum shall not
exceed, in the case of any Unrestricted Subsidiary, the amount of Investments (excluding Permitted Investments) previously made (and treated as a Restricted Payment) by the Company or any Restricted Subsidiary in such Unrestricted Subsidiary.

 Notwithstanding the foregoing, the provisions set forth in the immediately preceding paragraph shall not prohibit:

 (1) the payment of any dividend or the consummation of any irrevocable redemption within 60 days after
the date of declaration of such dividend or notice of such redemption if the dividend or payment of the redemption price, as the case may be, would have been permitted on the date of declaration or notice; 
  

 41 

 (2) any Restricted Payment made out of the net cash proceeds of the
substantially concurrent sale of, or made by exchange for, Qualified Capital Stock of the Company (other than Capital Stock issued or sold to a Subsidiary of the Company or an employee stock ownership plan or to a trust established by the Company or
any of its Subsidiaries for the benefit of their employees and other than Designated Preferred Stock) or a substantially concurrent cash capital contribution received by the Company from its shareholders; provided, however, that the
net cash proceeds from such sale or such cash capital contribution (to the extent so used for such Restricted Payment) shall be excluded from the calculation of amounts under clauses (ii)(w) and (ii)(x) of the immediately preceding
paragraph; 
 (3) the acquisition of any Indebtedness of the Company or a Guarantor that is a Subsidiary of
the Company that is subordinate or junior in right of payment to the Notes or the applicable Guarantee through the application of net proceeds of a substantially concurrent sale for cash (other than to a Subsidiary of the Company) of Refinancing
Indebtedness that is subordinate or junior in right of payment to the Notes or the applicable Guarantee; 
 (4) payments to a direct or indirect parent of the Company for the purpose of permitting any of such entities to redeem or repurchase common equity or options in respect thereof, in each case in connection with the repurchase
provisions of employee stock option or stock purchase agreements or other agreements to compensate management employees or upon the death, disability, retirement, severance or termination of employment of management employees; provided that
all such redemptions or repurchases pursuant to this clause (4) shall not exceed in any fiscal year the sum of (A) $5.0 million (with unused amounts in any calendar year carried over to succeeding calendar years subject to a maximum
(without giving effect to the following clause (B) of $10 million in any calendar year)) plus (B) any amounts not utilized in any preceding fiscal year following the Relevant Date that were otherwise available under this clause for
such purchases (which aggregate amount shall be increased by the amount of any net cash proceeds received from the sale since the Relevant Date of Capital Stock (other than Disqualified Capital Stock) to members of the Company’s management team
that have not otherwise been applied to the payment of Restricted Payments pursuant to the terms of clause (ii) of the immediately preceding paragraph or clause (2) of this paragraph and by the cash proceeds of any “key-man”
life insurance policies which are used to make such redemptions or repurchases); provided, further, that the cancellation of Indebtedness owing to the Company from members of management of the Company or any of its Restricted
Subsidiaries in connection with any repurchase of Capital Stock of such entities (or warrants or options or rights to acquire such Capital Stock) will not be deemed to constitute a Restricted Payment under this Indenture; 
 (5) the declaration and payment of dividends by the Company to, or the making of loans to, its direct parent company in
amounts required for the Company’s direct or indirect parent companies to pay (A) franchise taxes and other fees, taxes and expenses

  

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required to maintain their corporate existence, (B) Federal, state and local income taxes, to the extent such income taxes are attributable to the income of the Company and the
Restricted Subsidiaries and, to the extent of the amount actually received from its Unrestricted Subsidiaries, in amounts required to pay such taxes to the extent attributable to the income of such Unrestricted Subsidiaries; provided,
however, that the amount of such payments in any fiscal year do not exceed the amount that the Company and its consolidated Subsidiaries would be required to pay in respect of Federal, state and local taxes for such fiscal year were the Company
to pay such taxes as a stand-alone taxpayer, (C) customary salary, bonus and other benefits payable to officers and employees of any direct or indirect parent company of the Company to the extent such salaries, bonuses and other benefits are
attributable to the ownership or operation of the Company and the Restricted Subsidiaries, (D) general corporate overhead expenses of any direct or indirect payment company of the Company to the extent such expenses are attributable to the
ownership or operation of the Company and the Restricted Subsidiaries and (E) reasonable fees and expenses incurred in connection with any unsuccessful debt or equity offering by such direct or indirect parent company of the Company;

 (6) repurchases of Capital Stock deemed to occur upon the exercise of stock options if such Capital
Stock represents a portion of the exercise price thereof; 
 (7) additional Restricted Payments in an
aggregate amount not to exceed $75.0 million; 
 (8) Permitted Transaction Payments; 
 (9) payments of dividends on Disqualified Capital Stock issued in compliance with Section 4.09 hereof; 

(10) Restricted Payments made with Net Cash Proceeds from Asset Sales remaining after application thereof as
required by Section 4.10 hereof (including after the making by the Company of any Net Proceeds Offer required to be made by the Company pursuant to such Section and the application of the Net Proceeds Offer Amount to purchase all Notes and
other Senior Subordinated Debt of the Company or a Restricted Subsidiary of the Company tendered therein); 
 (11) upon occurrence of a Change of Control, and within 60 days after the completion of the Change of Control Offer pursuant to Section 4.15 hereof (including the purchase of all Notes tendered), any purchase or redemption of
Obligations of the Company that are subordinate or junior in right of payment to the Notes required pursuant to the terms thereof as a result of such Change of Control at a purchase or redemption price not to exceed 101% of the outstanding principal
amount thereof, plus accrued and unpaid interest thereon, if any; provided, however, that (A) at the time of such purchase or redemption, no Default or Event of Default shall have occurred and be continuing (or would result
therefrom) and (B) such purchase or redemption is not made, directly or indirectly, from the proceeds of (or made in anticipation of) any issuance of Indebtedness by the Company or any Subsidiary; and 
  

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 (12) Restricted Payments that are made with Excluded Contributions.

 Notwithstanding any of the foregoing to the contrary, the Company and its Restricted Subsidiaries may make any Restricted
Payment so long as (1) no Default or Event of Default has occurred and is continuing and (2) at the time of such Restricted Payment and after giving pro forma effect thereto, the Company’s Consolidated Fixed Charge Coverage Ratio
would exceed 2.0 to 1.0; provided, however, that if, at any time the criteria set forth in clause (2) of the preceding sentence cease to be satisfied, all Restricted Payments made by the Company or any of its Restricted Subsidiaries
occurring on or after the date on which such criteria ceased to be satisfied shall be required to be made, to the extent permitted thereby, in compliance with the preceding paragraphs of this covenant, and the amount available for Restricted
Payments pursuant to clause (ii) of the immediately preceding paragraph of this covenant on or after the date on which such criteria ceases to be satisfied shall be equal to the amount that would have been available for Restricted Payments
pursuant to such clause (ii) on such date without giving effect to any Restricted Payments made through such date pursuant to and in compliance with this paragraph; provided, further, that, if the Company or any of its Restricted
Subsidiaries become contractually obligated to make any Restricted Payment at the time criteria set forth in clauses (1) and (2) of the preceding sentence continues to be satisfied, the Company or such Restricted Subsidiary, as the case
may be, may continue to make such Restricted Payments, even if the criteria in clauses (1) and (2) of the preceding sentence ceases to be satisfied at the time such Restricted Payment is actually made, notwithstanding the limitation set
forth in the preceding proviso, and the amount available for Restricted Payments pursuant to clause (ii) of the immediately preceding paragraph of this covenant on or after the date on which such criteria ceases to be satisfied shall be equal
to the amount that would have been available for Restricted Payments pursuant to such clause (ii) on such date without giving effect to any Restricted Payments made on such date pursuant to and in compliance with this proviso. 
 The Board of Directors of the Company may designate any Restricted Subsidiary of the Company to be an Unrestricted Subsidiary as specified
in the definition of “Unrestricted Subsidiary”. For purposes of making such determination, all outstanding Investments by the Company and its Restricted Subsidiaries (except to the extent repaid in cash) in the Subsidiary so designated
shall be deemed to be Restricted Payments at the time of the designation and shall reduce the amount available for Restricted Payments under the first paragraph of this Section 4.07. All of those outstanding Investments shall be deemed to
constitute Investments in an amount equal to the fair market value of the Investments at the time of such designation. Such designation shall only be permitted if the Restricted Payment would be permitted at the time and if the Restricted Subsidiary
otherwise meets the definition of an Unrestricted Subsidiary. 
 SECTION 4.08. Dividend and Other Payment Restrictions
Affecting Subsidiaries. 
 The Company shall not, and shall not cause or permit any of its Restricted Subsidiaries to,
directly or indirectly, create or otherwise cause or permit to exist or become effective any consensual encumbrance or consensual restriction on the ability of any Restricted Subsidiary of the Company to: (a) pay dividends or make any other
distributions on, or in respect of, its Capital Stock; (b) make loans or advances or pay any Indebtedness or other

  

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obligation owed to the Company or any Guarantor; or (c) transfer any of its property or assets to the Company or any Guarantor, except, with respect to clauses (a), (b) and (c), for
such encumbrances or restrictions existing under or by reason of: (1) applicable law, rule, regulation or order; (2) this Indenture, the Notes, the 2006 Notes and the Guarantees; (3) non-assignment provisions of any contract or any
lease of any Restricted Subsidiary of the Company entered into in the ordinary course of business; (4) any instrument governing Acquired Indebtedness, which encumbrance or restriction is not applicable to any Person, or the properties or assets
of any Person, other than the Person or the properties or assets of the Person so acquired; (5) the Credit Facility as entered into on the Relevant Date or any amendments, modifications, restatements, renewals, increases, supplements,
refundings, replacements or refinancings thereof; provided that any restrictions imposed pursuant to any such amendment, modification; restatement, renewal, increase, supplement, refunding, replacement or refinancing are ordinary and
customary with respect to syndicated bank loans (under the relevant circumstances); (6) agreements existing on the Relevant Date to the extent and in the manner such agreements are in effect on the Relevant Date, including the Existing Notes;
(7) restrictions on the transfer of assets subject to any Lien permitted under this Indenture imposed by the holder of such Lien; (8) restrictions imposed by any agreement to sell assets or Capital Stock permitted under this Indenture to
any Person pending the closing of such sale; (9) any agreement or instrument governing Capital Stock of any Person that is acquired; (10) any Purchase Money Note or other Indebtedness or other contractual requirements of a Securitization
Entity in connection with a Qualified Securitization Transaction; provided that such restrictions apply only to such Securitization Entity; (11) other Indebtedness or Permitted Subsidiary Preferred Stock outstanding on the Relevant Date
or permitted to be issued or incurred under this Indenture; provided that any such restrictions are ordinary and customary with respect to the type of Indebtedness being incurred or Preferred Stock being issued (under the relevant
circumstances); (12) restrictions on cash or other deposits or net worth imposed by customers under contracts entered into in the ordinary course of business; (13) any encumbrances or restrictions imposed by any amendments, modifications,
restatements, renewals, increases, supplements, refundings, replacements or refinancings of the contracts, instruments or obligations referred to in clauses (1) through (4) and (6) through (12) above; provided that such
amendments, modifications, restatements, renewals, increases, supplements, refundings, replacements or refinancings are, in the good faith judgment of the Company’s Board of Directors (evidenced by a Board Resolution) whose judgment shall be
conclusively binding, not materially more restrictive with respect to such dividend and other payment restrictions than those contained in the dividend or other payment restrictions prior to such amendment, modification, restatement, renewal,
increase, supplement, refunding, replacement or refinancing; (14) customary provisions in joint venture and other similar agreements; and (15) customary provisions in leases and other agreements entered into in the ordinary course of
business. 
 SECTION 4.09. Incurrence of Indebtedness. 
 The Company shall not, and shall not permit any of its Restricted Subsidiaries to, directly or indirectly, create, incur, issue, assume,
guarantee, acquire, become liable, contingently or otherwise, with respect to, or otherwise become responsible for payment of (collectively, “incur”) any Indebtedness (other than Permitted Indebtedness); provided, however, that the
Company and any Restricted Subsidiary of the Company may incur Indebtedness (including, without limitation, Acquired Indebtedness), in each case if, on the date of the

  

 45 

 
incurrence of such Indebtedness, after giving effect to the incurrence thereof, the Consolidated Fixed Charge Coverage Ratio of the Company would have been greater than 2.0 to 1.0; provided,
however, that the amount of Indebtedness (including Acquired Indebtedness) that may be incurred pursuant to the foregoing by Restricted Subsidiaries that are not Guarantors shall not exceed $50 million at any one time outstanding. 
 SECTION 4.10. Asset Sales. 
 The Company shall not, and shall not permit any of its Restricted Subsidiaries to, consummate an Asset Sale unless (i) the Company or the applicable Restricted Subsidiary, as the case may be,
receives consideration at the time of such Asset Sale at least equal to the fair market value of the assets sold or otherwise disposed of (as determined in good faith by the Company); (ii) at least 75% of the consideration received by the
Company or the Restricted Subsidiary, as the case may be, from such Asset Sale shall be in the form of cash or Cash Equivalents; provided that the amount of: 
 (a) any liabilities (as shown on the Company’s or such Restricted Subsidiary’s most recent balance sheet) of the Company or any such Restricted Subsidiary (other than liabilities that are by
their terms subordinated to the Notes) that are assumed by the transferee of any such assets; (b) any notes or other obligations received by the Company or any such Restricted Subsidiary from such transferee that are converted by the Company or
such Restricted Subsidiary into cash within 180 days of the receipt thereof (to the extent of the cash received); and (c) any Designated Non-cash Consideration received by the Company or any of its Restricted Subsidiaries in such Asset Sale
having an aggregate fair market value, taken together with all other Designated Non-cash Consideration received pursuant to this clause (c) after the Relevant Date that is at that time outstanding, not to exceed the greater of $50 million
and 5% of Total Assets at the time of the receipt of such Designated Non-cash Consideration (with the fair market value of each item of Designated Non-cash Consideration being measured at the time received and without giving effect to subsequent
changes in value), shall, in each of (a), (b) and (c) above, be deemed to be cash for the purposes of this provision or for purposes of the second paragraph of this Section 4.10; and (iii) upon the consummation of an Asset Sale
(including any Asset Sale occurring after the Relevant Date but prior to the Issue Date), the Company shall apply, or cause such Restricted Subsidiary to apply, the Net Cash Proceeds relating to such Asset Sale within 365 days of receipt thereof
either (A) to prepay any Senior Debt or Indebtedness of a Restricted Subsidiary that is not a Guarantor and, in the case of any such Indebtedness under any revolving credit facility, effect a corresponding reduction in the availability under
such revolving credit facility (or effect a permanent reduction in the availability under such revolving credit facility regardless of the fact that no prepayment is required in order to do so (in which case no prepayment should be required)),
(B) to reinvest in Productive Assets (provided that this requirement shall be deemed satisfied if the Company or such Restricted Subsidiary, by the end of such 365-day period, has entered into a binding agreement under which it is
contractually committed to reinvest in Productive Assets, and such investment is consummated within 120 days from the date on which such binding agreement is entered into, and, with respect to the amount of such investment, the reference to the
366th day after an Asset Sale in the second following sentence shall be deemed to be a reference to the 121st day after the date on which such binding agreement is entered into (but only if such 121st day occurs later than such 366th day)) or
(C) a combination of prepayment and investment permitted by the foregoing clauses

  

 46 

 
(iii)(A) and (iii)(B). Pending the final application of any such Net Cash Proceeds, the Company or such Restricted Subsidiary may temporarily reduce Indebtedness under a revolving credit
facility, if any, or otherwise invest such Net Cash Proceeds in Cash Equivalents. On the 366th day after an Asset Sale or such earlier date, if any, as the Board of Directors of the Company or of such Restricted Subsidiary determines by Board
Resolution not to apply the Net Cash Proceeds relating to such Asset Sale as set forth in clauses (iii)(A), (iii)(B) and (iii)(C) of the next preceding sentence (each, a “Net Proceeds Offer Trigger Date”), such aggregate
amount of Net Cash Proceeds which have not been applied on or before such Net Proceeds Offer Trigger Date as permitted in clauses (iii)(A), (iii)(B) and (iii)(C) of the next preceding sentence (each a “Net Proceeds Offer
Amount”) shall be applied by the Company or such Restricted Subsidiary to make an offer to purchase (the “Net Proceeds Offer”) on a date (the “Net Proceeds Offer Payment Date”) not less than 30 nor more
than 60 days following the applicable Net Proceeds Offer Trigger Date, from all Holders and holders of any other Senior Subordinated Debt of the Company or a Restricted Subsidiary of the Company requiring the making of such an offer, on a pro
rata basis, the maximum amount of Notes and such other Senior Subordinated Debt that may be purchased with the Net Proceeds Offer Amount at a price equal to 100% of their principal amount (or, in the event such other Senior Subordinated Debt was
issued with significant original issue discount, 100% of the accreted value thereof), plus accrued and unpaid interest thereon, if any, to the date of purchase (or, in respect of such other Senior Subordinated Debt, such lesser price, if any, as may
be provided for by the terms of such Senior Subordinated Debt); provided, however, that if at any time any non-cash consideration (including any Designated Non-cash Consideration) received by the Company or any Restricted Subsidiary of
the Company, as the case may be, in connection with any Asset Sale is converted into or sold or otherwise disposed of for cash (other than interest received with respect to any such non-cash consideration), then such conversion or disposition shall
be deemed to constitute an Asset Sale hereunder, and the Net Cash Proceeds thereof shall be applied in accordance with this Section 4.10. Notwithstanding the foregoing, if a Net Proceeds Offer Amount is less than $20.0 million, the
application of the Net Cash Proceeds constituting such Net Proceeds Offer Amount to a Net Proceeds Offer may be deferred until such time as such Net Proceeds Offer Amount plus the aggregate amount of all Net Proceeds Offer Amounts arising subsequent
to the Net Proceeds Offer Trigger Date relating to such initial Net Proceeds Offer Amount from all Asset Sales by the Company and its Restricted Subsidiaries aggregates to at least $20.0 million, at which time the Company or such Restricted
Subsidiary shall apply all Net Cash Proceeds constituting all Net Proceeds Offer Amounts that have been so deferred to make a Net Proceeds Offer (the first date the aggregate of all such deferred Net Proceeds Offer Amounts is equal to $20.0 million
or more shall be deemed to be a Net Proceeds Offer Trigger Date). 
 Notwithstanding the immediately preceding paragraph, the
Company and its Restricted Subsidiaries shall be permitted to consummate an Asset Sale (including any Asset Sale occurring after the Relevant Date but prior to the Issue Date) without complying with such paragraph to the extent that: (i) at
least 75% of the consideration for such Asset Sale constitutes Productive Assets, cash, Cash Equivalents and/or Marketable Securities; and (ii) such Asset Sale is for fair market value; provided that any consideration consisting of cash,
Cash Equivalents and/or Marketable Securities received by the Company or any of its Restricted Subsidiaries in connection with any Asset Sale permitted to be consummated under this paragraph shall constitute Net Cash Proceeds subject to the
provisions of the preceding paragraph. 
  

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 Notice of each Net Proceeds Offer will be mailed to the record Holders as shown on the
register of Holders within 30 days following the Net Proceeds Offer Trigger Date, with a copy to the Trustee, and shall comply with the procedures set forth in Section 3.09 hereof. To the extent that the aggregate amount of Notes and other
Senior Subordinated Debt tendered pursuant to a Net Proceeds Offer is less than the Net Proceeds Offer Amount, the Company may use any remaining Net Proceeds Offer Amount for general corporate purposes or for any other purpose not prohibited by this
Indenture. Upon completion of any such Net Proceeds Offer, the Net Proceeds Offer Amount shall be reset at zero. 
 The Company
shall comply with the requirements of Rule 14e-1 under the Exchange Act and any other securities laws and regulations thereunder to the extent such laws and regulations are applicable in connection with the repurchase of Notes pursuant to a Net
Proceeds Offer. To the extent that the provisions of any securities laws or regulations conflict with the provisions of this Section 4.10, the Company shall comply with the applicable securities laws and regulations and shall not be deemed to
have breached its obligations under this Section 4.10 by virtue thereof. 
 SECTION 4.11. Transactions with
Affiliates. 
 (a) The Company shall not, and shall not permit any of its Restricted Subsidiaries to, directly or
indirectly, enter into or permit to occur any transaction or series of related transactions (including, without limitation, the purchase, sale, lease or exchange of any property or the rendering of any service) with, or for the benefit of, any of
its Affiliates (an “Affiliate Transaction”) involving aggregate payment or consideration in excess of $10.0 million unless (i) such Affiliate Transaction is on terms that are not materially less favorable to the Company or the
relevant Restricted Subsidiary than those that might reasonably have been obtained in a comparable transaction at such time on an arm’s-length basis from a Person that is not an Affiliate of the Company; and (ii) the Company delivers to
the Trustee with respect to any Affiliate Transaction or series of related Affiliate Transactions involving aggregate payments or consideration in excess of $30.0 million, a Board Resolution adopted by the majority of the members of the Board of
Directors of the Company approving such Affiliate Transaction and an officers’ certificate certifying that such Affiliate Transaction complies with clause (i) above. 
 (b) The restrictions set forth in Section 4.11(a) hereof shall not apply to: (i) reasonable fees and compensation paid to,
and indemnity provided on behalf of, officers, directors, employees or consultants of the Company or any Restricted Subsidiary of the Company as determined in good faith by the Company’s Board of Directors or senior management;
(ii) transactions between or among the Company and any of its Restricted Subsidiaries or between or among such Restricted Subsidiaries, provided that such transactions are not otherwise prohibited by this Indenture; (iii) any
agreement as in effect as of the Relevant Date or any amendment thereto or any transaction contemplated thereby (including pursuant to any amendment thereto) or by any replacement agreement thereto so long as any such amendment or replacement
agreement is not more disadvantageous to the Holders in any material respect than the original agreement as in effect on the Relevant Date as determined in good faith by the Company; (iv) Restricted Payments or Permitted Investments permitted
by this Indenture; (v) transactions effected as part of a Qualified Securitization Transaction; (vi) the payment of customary annual management, consulting and advisory fees and related expenses to

  

 48 

 
the Permitted Holders and their Affiliates made pursuant to any financial advisory, financing, underwriting or placement agreement or in respect of other investment banking activities, including,
without limitation, in connection with acquisitions or divestitures which are approved by the Board of Directors of the Company or such Restricted Subsidiary in good faith; (vii) payments or loans to employees or consultants that are approved
by the Board of Directors of the Company in good faith; (viii) sales of Qualified Capital Stock; (ix) the existence of, or the performance by the Company or any of its Restricted Subsidiaries of its obligations under the terms of, any
stockholders’ agreement (including any registration rights agreement or purchase agreement related thereto) to which it is a party as of the Relevant Date and any similar agreements which it may enter into thereafter; provided,
however, that the existence of, or the performance by the Company or any of its Restricted Subsidiaries of obligations under, any future amendment to any such existing agreement or under any similar agreement entered into after the Relevant
Date shall only be permitted by this clause (ix) to the extent that the terms of any such amendment or new agreement are not disadvantageous to the Holders in any material respect; (x) transactions permitted by, and complying with, the
provisions of Article 5 hereof, (xi) any issuance of securities or other payments, awards, grants in cash, securities or otherwise pursuant to, or the funding of, employment arrangements, stock options and stock ownership plans approved by
the Board of Directors of the Company, (xii) investments by the Permitted Holders in securities of the Company or any of its Restricted Subsidiaries so long as (i) the investment is being offered generally to other investors on the same or
more favorable terms and (ii) the investment constitutes less than 5.0% of the proposed or outstanding issue amount of such class of securities; and (xiii) transactions in which the Company or any Restricted Subsidiary, as the case may be,
receives an opinion from a nationally recognized investment banking, appraisal or accounting firm that such Affiliate Transaction is either fair, from a financial standpoint, to the Company or such Restricted Subsidiary or is on terms not materially
less favorable than those that might reasonably have been obtained in a comparable transaction at such time on an arm’s length basis from a Person that is not an Affiliate of the Company. 
 SECTION 4.12. Liens. 
 The Company shall not, and shall not cause or permit any Guarantor to, incur any Secured Debt that is not Senior Debt of such Person unless, contemporaneously therewith, such Person makes effective
provision to secure the Notes or the relevant Guarantee, as applicable, equally and ratably with such Secured Debt for so long as such Secured Debt is secured by a Lien (the “Initial Lien”). Any Lien created for the benefit of the
Holders pursuant to the preceding sentence shall provide by its terms that such Lien shall be automatically and unconditionally released and discharged upon the release and discharge of the Lien securing the other Secured Debt and that holders of
such other Secured Debt may exclusively control the disposition of property subject to the Initial Lien. 
 SECTION 4.13.
Conduct of Business. 
 The Company shall not, and shall not permit any of its Restricted Subsidiaries to, engage in any
businesses a majority of whose revenues are not derived from businesses that are the same or reasonably similar, ancillary or related to, or a reasonable extension, development or expansion of, the businesses in which the Company and its Restricted
Subsidiaries are engaged on the Relevant Date (which shall include, without limitation, engineered components businesses not within the aerospace industry). 
  

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 SECTION 4.14. Corporate Existence. 
 Subject to Article 5 hereof, the Company shall do or cause to be done all things necessary to preserve and keep in full force and
effect (i) its corporate existence, and the corporate, partnership or other existence of each of its Restricted Subsidiaries, in accordance with the respective organizational documents (as the same may be amended from time to time) of the
Company or any such Restricted Subsidiary and (ii) the rights (charter and statutory), licenses and franchises of the Company and its Restricted Subsidiaries; provided, however, that the Company shall not be required to preserve
any such right, license or franchise, or the corporate, partnership or other existence of any of its Restricted Subsidiaries, if the Board of Directors shall determine that the preservation thereof is no longer desirable in the conduct of the
business of the Company and its Restricted Subsidiaries, taken as a whole, and that the loss thereof is not adverse in any material respect to the Holders of the Notes. 
 SECTION 4.15. Offer to Repurchase upon Change of Control. 
 (a) If a Change
of Control occurs, each Holder shall have the right to require that the Company purchase all or a portion of such Holder’s Notes pursuant to the offer described below (the “Change of Control Offer”) at a purchase price equal to
101% of the principal amount thereof plus accrued interest to the date of purchase. Within 30 days following the date upon which the Change of Control occurred, the Company must send, by first class mail, a notice to the Trustee and each
Holder, which notice shall govern the terms of the Change of Control Offer. Such notice shall state, among other things, the purchase date, which must be no earlier than 30 days nor later than 60 days from the date such notice is mailed, other than
as may be required by law (the “Change of Control Payment Date”). Holders electing to have a Note purchased pursuant to a Change of Control Offer shall be required to surrender the Note, with the form entitled “Option of Holder
to Elect Purchase” on the reverse of the Note completed, to the Paying Agent at the address specified in the notice prior to the close of business on the third Business Day prior to the Change of Control Payment Date. 
 (b) On the Change of Control Payment Date, the Company shall, to the extent lawful, (1) accept for payment all Notes or portions
thereof properly tendered pursuant to the Change of Control Offer, (2) deposit with the Paying Agent an amount equal to the Change of Control payment in respect of all Notes or portions thereof so tendered and (3) deliver or cause to be
delivered to the applicable Trustee the Notes so accepted together with an Officers’ Certificate stating the aggregate principal amount of Notes or portions thereof being purchased by the Company. The Paying Agent shall promptly mail to each
Holder of Notes so tendered the Change of Control payment for such Notes, and the Trustee shall promptly authenticate and mail or deliver (or cause to be transferred by book entry) to each Holder a new Note equal in principal amount to any
unpurchased portion of the Notes surrendered, if any; provided that each such new Note will be in a principal amount of $2,000 and integral multiples of $1,000 in excess thereof. The Company shall publicly announce the results of the Change
of Control Offer on or as soon as practicable after the Change of Control Payment Date. 
  

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 Prior to the mailing of the notice referred to in Section 4.15(a) above, but in
any event within 30 days following any Change of Control, the Company shall: (i) repay in full all Indebtedness under the Credit Facility and all other Senior Debt the terms of which require repayment upon a Change of Control; or
(ii) obtain the requisite consents under the Credit Facility and all such other Senior Debt to permit the repurchase of the Notes as provided below. The Company’s failure to comply with the covenant described in the immediately preceding
sentence shall constitute an Event of Default described in clause (c) and not in clause (b) under Section 6.01 hereof. 
 (c) The Company shall comply with the requirements of Rule 14e-1 under the Exchange Act to the extent such laws and regulations are applicable in connection with the repurchase of Notes pursuant to a Change of Control Offer. To the
extent that the Company complies with the provisions of any such securities laws or regulations, the Company shall not be deemed to have breached its obligations under this Section 4.15. 
 (d) Notwithstanding anything to the contrary in this Section 4.15, the Company shall not be required to make a Change of Control Offer
upon a Change of Control if a third party makes the Change of Control Offer in the manner, at the times and otherwise in compliance with the requirements set forth in this Section 4.15 hereof and purchases all Notes validly tendered and not
withdrawn under such Change of Control Offer. 
 SECTION 4.16. No Senior Subordinated Debt. 
 The Company shall not, and shall not permit any Guarantor to, incur or suffer to exist Indebtedness that is senior in right of payment to
the Notes or such Guarantor’s Guarantee, as the case may be, and subordinate in right of payment to any other Indebtedness of the Company or such Guarantor, as the case may be. 
 SECTION 4.17. Additional Guarantees. 
 The Company shall not, and shall not permit any of its Restricted Subsidiaries to, create or acquire another Domestic Restricted Subsidiary unless such Domestic Restricted Subsidiary executes and delivers
a supplemental indenture to the Indenture, providing for a senior subordinated guarantee of payment of the Notes by such Domestic Restricted Subsidiary; provided, however, that such Domestic Restricted Subsidiary need not execute and
deliver such a supplemental indenture for so long as such Domestic Restricted Subsidiary is an Immaterial Domestic Restricted Subsidiary; provided further, however, that the Company shall cause a Domestic Restricted Subsidiary that was an
Immaterial Domestic Restricted Subsidiary but has ceased to qualify as an Immaterial Domestic Restricted Subsidiary to execute and deliver a supplemental indenture to the Indenture, providing for a senior subordinated guarantee of payment of the
Notes by such Domestic Restricted Subsidiary no later than 20 business days after the end of the most recently ended fiscal quarter of the Company in which such Domestic Restricted Subsidiary ceased to be an Immaterial Domestic Restricted
Subsidiary; provided further, however, that, if at any time Domestic Restricted Subsidiaries that are not Guarantors because they are Immaterial Domestic Restricted Subsidiaries constitute in the aggregate more than 5% of Total Assets as of
the end of the most recently ended fiscal quarter of the Company or more than 5% of Consolidated EBITDA of the Company for the period of four consecutive

  

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fiscal quarters as of the end of the most recently ended fiscal quarter of the Company, the Company shall cause one or more such Domestic Restricted Subsidiaries to become Guarantors
(notwithstanding that such Domestic Restricted Subsidiaries are, individually, Immaterial Domestic Restricted Subsidiaries) no later than 20 business days after the end of the most recently ended fiscal quarter in which such requirement was
triggered, such that the foregoing condition ceases to be true. 
 SECTION 4.18. Limitation on Preferred Stock of Restricted
Subsidiaries. 
 The Company shall not permit any of its Restricted Subsidiaries to issue any Preferred Stock (other than to
the Company or to a Restricted Subsidiary of the Company) or permit any Person (other than the Company or a Restricted Subsidiary of the Company) to own any Preferred Stock of any Restricted Subsidiary of the Company, other than Permitted Subsidiary
Preferred Stock. The provisions of this Section 4.18 will not apply to (w) any of the Guarantors, (x) any transaction as a result of which neither the Company nor any of its Restricted Subsidiaries will own any Capital Stock of the
Restricted Subsidiary whose Preferred Stock is being issued or sold and (y) Preferred Stock that is Disqualified Capital Stock and is issued in compliance with Section 4.09 hereof. 
 SECTION 4.19. Suspension of Covenants. 
 (a) During any period of time following the Issue Date that (i) the Notes have Investment Grade Ratings from both Rating Agencies, and (ii) no Default has occurred and is continuing under the
Indenture (the occurrence of the events described in the foregoing clauses (i) and (ii) being collectively referred to as a “Covenant Suspension Event”), the Company and its Restricted Subsidiaries shall not be subject to
the following provisions of the Indenture: 
 (1) Section 4.07; 
 (2) Section 4.08; 
 (3) Section 4.09; 
 (4) Section 4.10; 
 (5) Section 4.11; 
 (6) Section 4.13; 
 (7) Section 4.16; 
 (8) Section 4.17; 
 (9) Section 4.18; and 
 (10) clause (ii) of the first
paragraph of Section 5.01 
  

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 (collectively, the “Suspended Covenants”). Upon the occurrence of a Covenant Suspension
Event, the amount of Net Cash Proceeds with respect to any applicable Net Proceeds Offer Trigger Date shall be set at zero at such date (the “Suspension Date”). In addition, in the event that the Company and the Restricted
Subsidiaries are not subject to the Suspended Covenants for any period of time as a result of the foregoing, and, on any subsequent date (the “Reversion Date”), one or both of the Rating Agencies withdraws its Investment Grade
Rating or downgrades the rating assigned to the Notes below an Investment Grade Rating, or a Default or Event of Default occurs and is continuing, then the Company and the Restricted Subsidiaries shall thereafter again be subject to the Suspended
Covenants with respect to future events. The period of time between the Suspension Date and the Reversion Date is referred to in this description as the “Suspension Period.” Within 30 days of the Reversion Date, any Restricted
Subsidiary that would have been required during the Suspension Period but for the Suspended Covenants by Section 4.17 to execute a supplemental indenture shall execute such supplemental indenture required by such covenant. Notwithstanding that
the Suspended Covenants may be reinstated, no Default or Event of Default will be deemed to have occurred as a result of a failure to comply with the Suspended Covenants during the Suspension Period (or upon termination of the Suspension Period or
after that time based solely on events that occurred during the Suspension Period). 
 (b) On the Reversion Date, all
Indebtedness incurred during the Suspension Period will be classified to have been incurred or issued pursuant to Section 4.09 to the extent such Indebtedness would be permitted to be incurred or issued thereunder as of the Reversion Date and
after giving effect to Indebtedness incurred or issued prior to the Suspension Period and outstanding on the Reversion Date. To the extent such Indebtedness would not be so permitted to be incurred or issued pursuant to Section 4.09, such
Indebtedness will be deemed to have been outstanding on the Relevant Date, so that it is classified as permitted under clause (b) of the definition of Permitted Indebtedness. Restricted Payments made during the Suspension Period will be deemed
to have been made pursuant to the first paragraph of Section 4.07. 
 (c) If (i) a Change of Control occurs that
results in either (a) the sale, lease, exchange or other transfer of all or substantially all of the assets of the Company to any Person or Group (as defined in the definition of Change of Control) other than an Affiliate of the Company or
(b) any Person or Group other than an Affiliate of the Company becomes the beneficial owner, directly or indirectly, of shares representing 100% of the total ordinary voting power represented by the issued and outstanding Capital Stock of the
Company or Holdings and (ii) such Person or Group acquiring control pursuant to clause (i) above is subject to the reporting requirements of Section 13 or 15(d) of the Exchange Act, then the Company shall not be subject to
Section 4.03(a) from that time if and for so long as such Person or Group maintains Investment Grade Ratings from both Rating Agencies. 
 (d) The Company shall give the Trustee prompt (and in any event not later than five business days after a Covenant Suspension Event) written notice of any Covenant Suspension Event. In the absence of such
notice, the Trustee shall assume the Suspended Covenants apply and are in full force and effect. The Company shall give the Trustee prompt (and in any event not later than five business days after a Covenant Suspension Event) written notice of any
occurrence of a Reversion Date. After any such notice of the occurrence of a Reversion Date, the Trustee shall assume the Suspended Covenants apply and are in full force and effect. 
  

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 ARTICLE V 
 SUCCESSORS 
 SECTION 5.01. Merger, Consolidation or Sale of Assets.

 (a) The Company shall not, in a single transaction or series of related transactions, consolidate or merge with or into any
Person, or sell, assign, transfer, lease, convey or otherwise dispose of (or cause or permit any Restricted Subsidiary of the Company to sell, assign, transfer, lease, convey or otherwise dispose of) all or substantially all of the Company’s
assets (determined on a consolidated basis for the Company and the Company’s Restricted Subsidiaries) to any Person unless (i) either: (a) the Company shall be the surviving or continuing corporation; or (b) the Person (if other
than the Company) formed by such consolidation or into which the Company is merged or the Person which acquires by sale, assignment, transfer, lease, conveyance or other disposition the properties and assets of the Company and of the Company’s
Restricted Subsidiaries substantially as an entirety (the “Surviving Entity”): (x) shall be a corporation organized and validly existing under the laws of the United States of America or any State thereof or the District of
Columbia; and (y) shall expressly assume, by supplemental indenture (in form and substance satisfactory to the Trustee), executed and delivered to the Trustee, the due and punctual payment of the principal of, premium, if any, and interest on
all of the Notes and the performance of every covenant of the Notes, this Indenture and the Registration Rights Agreement to be performed or observed on the part of the Company; (ii) except in the case of a merger of the Company with or into a
Restricted Subsidiary of the Company, and except in the case of a merger entered into solely for the purpose of reincorporating the Company in another jurisdiction, immediately after giving effect to such transaction and the assumption contemplated
by clause (i)(b)(y) above (including giving effect to any Indebtedness and Acquired Indebtedness incurred in connection with or in respect of such transaction), the Company or such Surviving Entity, as the case may be, shall be able to incur at
least $1.00 of additional Indebtedness (other than Permitted Indebtedness) pursuant to Section 4.09 hereof, or the Consolidated Fixed Charge Coverage Ratio for the Surviving Entity and its Restricted Subsidiaries on a consolidated basis would
be greater than such ratio for the Company and the Restricted Subsidiaries immediately prior to such transaction; (iii) except in the case of a merger of the Company with or into a Restricted Subsidiary of the Company, and except in the case of
a merger entered into solely for the purpose of reincorporating the Company in another jurisdiction, immediately after giving effect to such transaction and the assumption contemplated by clause (i)(b)(y) above (including, without limitation,
giving effect to any Indebtedness and Acquired Indebtedness incurred and any Lien granted in connection with or in respect of the transaction), no Default or Event of Default shall have occurred or be continuing; and (iv) the Company or the
Surviving Entity shall have delivered to the Trustee an Officers’ Certificate and an Opinion of Counsel, each stating that such consolidation, merger, sale, assignment, transfer, lease, conveyance or other disposition and, if a supplemental
indenture is required in connection with such transaction, such supplemental indenture comply with the applicable provisions of this Indenture and that all conditions precedent in this Indenture relating to such transaction have been satisfied.

  

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 (b) Each Guarantor shall not, and the Company shall not permit any such Guarantor to,
consolidate or merge with or into, or sell, assign, transfer, lease, convey or otherwise dispose of, in a single transaction or series of related transactions, all or substantially all of its assets to any Person unless: 
  

	 	(1)	(except in the case of such Guarantor that has been disposed of in its entirety to another Person (other than to the Company or an Affiliate of the Company), whether
through a merger, consolidation or sale of Capital Stock or through the sale of all or substantially all of its assets (such sale constituting the disposition of such Guarantor in its entirety), if in connection therewith the Company provides an
Officers’ Certificate to the Trustee to the effect that the Company will comply with its obligations under Section 4.10 hereof in respect of such disposition) the resulting, surviving or transferee Person (if not such Guarantor) shall be a
Person organized and validly existing under the laws of the jurisdiction under which such Guarantor was organized or under the laws of the United States of America, any State thereof or the District of Columbia, and such Person shall expressly
assume, by a supplemental indenture (in form and substance satisfactory to the Trustee), executed and delivered to the Trustee, all the obligations of such Guarantor, if any, under its Guarantee; 

  

	 	(2)	except in the case of a merger of such Guarantor with or into the Company or another Guarantor of the Company, and except in the case of a merger entered into solely
for the purpose of reincorporating such Guarantor in another jurisdiction, immediately after giving effect to such transaction and the assumption contemplated by the immediately preceding clause (b)(1) (including, without limitation, giving
effect to any Indebtedness and Acquired Indebtedness incurred and any Lien granted in connection with or in respect of the transaction), no Default or Event of Default shall have occurred and be continuing; and 

  

	 	(3)	the Company shall have delivered to the Trustee an Officers’ Certificate and an Opinion of Counsel, each stating that such consolidation, merger, sale, assignment,
transfer, lease, conveyance or other disposition and, if a supplemental indenture is required in connection with such transaction, such supplemental indenture comply with the applicable provisions of this Indenture and that all conditions precedent
in the Indenture relating to such transaction have been satisfied. 

 (c) Holdings shall not consolidate or merge
with or into, or sell, assign, transfer, lease or otherwise dispose of, in a single transaction or series of related transactions, all or substantially all of its assets to any Person unless: 
  

	 	(1)	the resulting, surviving or transferee Person (if not Holdings) shall be a Person organized and validly existing under the laws of the United States of America, any
State thereof or the District of Columbia, and such Person shall expressly assume, by a supplemental indenture (in form and substance satisfactory to the Trustee), executed and delivered to the Trustee, all the obligations of Holdings, if any, under
its Guarantee; 

  

 55 

	 	(2)	except in the case of a merger entered into solely for reincorporating Holdings in another jurisdiction, immediately after giving effect to such transaction and the
assumption contemplated by the immediately preceding clause (c)(1) (including, without limitation, giving effect to any Indebtedness and Acquired Indebtedness incurred and any Lien granted in connection with or in respect of the transaction),
no Default or Event of Default shall have occurred and be continuing; and 

  

	 	(3)	the Company shall have delivered to the Trustee an Officers’ Certificate and an Opinion of Counsel, each stating that such consolidation, merger, sale, assignment,
transfer, lease, conveyance or other disposition and, if a supplemental indenture is required in connection with such transaction, such supplemental indenture comply with the applicable provisions of this Indenture and that all conditions precedent
in the Indenture relating to such transaction have been satisfied. 

 In case of any such consolidation, merger,
sale or conveyance, and upon the assumption by the successor Person, by supplemental indenture, executed and delivered to the Trustee and satisfactory in form to the Trustee, of the Guarantee of the Notes and the due and punctual performance of all
of the covenants and conditions of this Indenture to be performed by the Restricted Subsidiary, such successor Person shall succeed to and be substituted for the Restricted Subsidiary with the same effect as if it had been named herein as a
Restricted Subsidiary. Such successor Person thereupon may cause to be signed any or all of the Guarantees of the Notes issuable hereunder which theretofore shall not have been signed by the Company and delivered to the Trustee. All the Guarantees
so issued shall in all respects have the same legal rank and benefit under this Indenture as the Guarantees theretofore and thereafter issued in accordance with the terms of this Indenture as though all of such Guarantees had been issued at the date
of the execution hereof. 
 For purposes of the foregoing, the transfer (by lease, assignment, sale or otherwise, in a single
transaction or series of transactions) of all or substantially all of the properties or assets of one or more Restricted Subsidiaries of the Company the Capital Stock of which constitutes all or substantially all of the properties and assets of the
Company, shall be deemed to be the transfer of all or substantially all of the properties and assets of the Company. However, transfer of assets between or among the Company and its Restricted Subsidiaries will not be subject to this
Section 5.01. 
 Notwithstanding anything in this Section 5.01 to the contrary, (x) the merger of TD Finance
Corporation with and into the Company on the Relevant Date and (y) the merger of TransDigm Holding Company with and into the Company, as long as such merger occurs on or before the second Business Day following the Relevant Date, shall be
permitted under this Indenture without complying with the requirements of this Section 5.01. 
  

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 SECTION 5.02. Successor Corporation Substituted. 
 Upon any consolidation, combination or merger, or any transfer of all or substantially all of the assets of the Company in accordance with
Section 5.01 hereof, in which the Company is not the continuing corporation, the successor Person formed by such consolidation or into which the Company is merged or to which such conveyance, lease or transfer is made shall succeed to, and be
substituted for, and may exercise every right and power of the Company under this Indenture and the Notes with the same effect as if such surviving entity had been named as such and that, in the event of a conveyance or transfer (but not a lease),
the conveyor or transferor (but not a lessor) shall be released from the provisions of this Indenture. 
 ARTICLE VI 

DEFAULTS AND REMEDIES 
 SECTION 6.01. Events of Default. 
 “Event of Defaults” are:

 (a) the failure to pay interest on any Notes when the same becomes due and payable if the default continues
for a period of 30 days (whether or not such payment shall be prohibited by Article 10 or Article 12 hereof); 
 (b) the failure to pay the principal on any Notes when such principal becomes due and payable, at maturity, upon redemption or otherwise (including the failure to make a payment to purchase Notes tendered
pursuant to a Change of Control Offer or a Net Proceeds Offer on the date specified for such payment in the applicable offer to purchase) (whether or not such payment shall be prohibited by Article 10 or Article 12 hereof); 
 (c) a default in the observance or performance of any other covenant or agreement contained herein if the default continues
for a period of 60 days after the Company receives written notice specifying the default (and demanding that such default be remedied) from the Trustee or the Holders of at least 25% of the outstanding principal amount of the Notes (except in the
case of a default with respect to Section 5.01 hereof, which will constitute an Event of Default with such notice requirement but without such passage of time requirement); 
 (d) the failure to pay at final stated maturity (giving effect to any applicable grace periods and any extensions thereof)
the principal amount of any Indebtedness of the Company or any Significant Subsidiary of the Company (other than a Securitization Entity), or the acceleration of the final stated maturity of any such Indebtedness, if the aggregate principal amount
of such Indebtedness, together with the principal amount of any other such Indebtedness in default for failure to pay principal at final maturity or which has been accelerated, aggregates $20.0 million or more at any time; 
 (e) one or more judgments in an aggregate amount in excess of $20.0 million shall have been rendered against the
Company or any of its Significant Subsidiaries and such judgments remain undischarged, unpaid or unstayed for a period of 60 days after such judgment or judgments become final and non-appealable; 
  

 57 

 (f) the Company or any of its Significant Subsidiaries pursuant to, or
within the meaning of, Bankruptcy Law: 
 (i) commences a voluntary case, 
 (ii) consents to the entry of an order for relief against it in an involuntary case, 
 (iii) consents to the appointment of a custodian of it or for all or substantially all of its property, or 
 (iv) makes a general assignment for the benefit of its creditors, or 
 (g) a court of competent jurisdiction enters an order or decree under any Bankruptcy Law that: 
 (i) is for relief against the Company or any of its Significant Subsidiaries; 
 (ii) appoints a custodian of the Company or any of its Significant Subsidiaries or for all or substantially all of the
property of the Company or any of its Significant Subsidiaries; or 
 (iii) orders the liquidation of the
Company or any of its Significant Subsidiaries; 
 (iv) and the order or decree remains unstayed and in effect
for 60 consecutive days. 
 SECTION 6.02. Acceleration. 
 If any Event of Default (other than an Event of Default specified in clause (f) or (g) of Section 6.01 hereof with respect to
the Company) occurs and is continuing, the Trustee or the Holders of at least 25% in principal amount of the then outstanding Notes may declare the principal of, and accrued interest on, all the Notes to be due and payable immediately by notice in
writing to the Company and the Trustee specifying the respective Event of Default and that it is a “notice of acceleration” (the “Acceleration Notice”), and the same (i) shall become immediately due and payable or
(ii) if there are any amounts outstanding under the Credit Facility, shall become immediately due and payable upon the first to occur of an acceleration under the Credit Facility or five Business Days after receipt by the Company and the
Representative under the Credit Facility of such Acceleration Notice but only if such Event of Default is then continuing. If an Event of Default specified in clause (f) or (g) of Section 6.01 hereof with respect to the Company occurs
and is continuing, then all unpaid principal of, and premium, if any, and accrued and unpaid interest on, all the outstanding Notes shall ipso facto become and be immediately due and payable without any declaration or other act on the part of
the Trustee or any Holder. 
  

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 At any time after a declaration of acceleration with respect to the Notes as described in
the preceding paragraph, the Holders of a majority in principal amount of the Notes may rescind and cancel such declaration and its consequences (i) if the rescission would not conflict with any judgment or decree, (ii) if all existing
Events of Default have been cured or waived except nonpayment of principal or interest that has become due solely because of the acceleration, (iii) to the extent the payment of such interest is lawful, interest on overdue installments of
interest and overdue principal, which has become due otherwise than by such declaration of acceleration, has been paid, (iv) if the Company has paid the Trustee its reasonable compensation and reimbursed the Trustee for its expenses,
disbursements and advances; and (v) in the event of the cure or waiver of an Event of Default of the type described in clause (f) or (g) of Section 6.01 hereof, the Trustee shall have received an Officers’ Certificate and an
Opinion of Counsel that such Event of Default has been cured or waived. No such rescission shall affect any subsequent Default or impair any right consequent thereto. 
 SECTION 6.03. Other Remedies. 
 If an Event of Default occurs and is
continuing, the Trustee may pursue any available remedy to collect the payment of principal, premium, if any, and interest on the Notes or to enforce the performance of any provision of the Notes or this Indenture. 
 The Trustee may maintain a proceeding even if it does not possess any of the Notes or does not produce any of them in the proceeding. A
delay or omission by the Trustee or any Holder in exercising any right or remedy accruing upon an Event of Default shall not impair the right or remedy or constitute a waiver of or acquiescence in the Event of Default. All remedies are cumulative to
the extent permitted by law. 
 SECTION 6.04. Waiver of Past Defaults. 
 Holders of not less than a majority in aggregate principal amount of the then-outstanding Notes by notice to the Trustee may on behalf of
the Holders of all of the Notes waive an existing Default or Event of Default and its consequences hereunder, except a continuing Default or Event of Default in the payment of the principal of, premium and interest on the Notes (including in
connection with an offer to purchase) (provided, however, that the Holders of a majority in aggregate principal amount at maturity of the then-outstanding Notes may rescind an acceleration and its consequences, including any related
payment default that resulted from such acceleration). Upon any such waiver, such Default shall cease to exist, and any Event of Default arising therefrom shall be deemed to have been cured for every purpose of this Indenture; but no such waiver
shall extend to any subsequent or other Default or impair any right consequent thereon. 
 SECTION 6.05. Control by
Majority. 
 Holders of a majority in principal amount of the then-outstanding Notes may direct the time, method and
place of conducting any proceeding for exercising any remedy available to the Trustee or exercising any trust or power conferred on it. However, the Trustee may refuse to follow any direction that conflicts with law or this Indenture, that the
Trustee determines may be unduly prejudicial to the rights of other Holders or that may involve the Trustee in personal liability. 
  

 59 

 SECTION 6.06. Limitation on Suits. 
 A Holder may pursue a remedy with respect to this Indenture or the Notes only if: 
 (a) the Holder gives to the Trustee written notice of a continuing Event of Default; 
 (b) the Holders of at least 25% in principal amount of the then-outstanding Notes make a written request to the Trustee to
pursue the remedy; 
 (c) such Holder or Holders offer and, if requested, provide to the Trustee indemnity
satisfactory to the Trustee against any loss, liability or expense; 
 (d) the Trustee does not comply with the
request within 60 days after receipt of the request and the offer and, if requested, the provision of indemnity; and 
 (e) during such 60-day period, the Holders of a majority in principal amount of the then outstanding Notes do not give the Trustee a direction inconsistent with the request. 
 A Holder may not use this Indenture to prejudice the rights of another Holder or to obtain a preference or priority over another Holder.

 SECTION 6.07. Rights of Holders of Notes to Receive Payment. 
 Notwithstanding any other provision of this Indenture, the right of any Holder of a Note to receive payment of principal, premium and
interest on the Note, on or after the respective due dates expressed in the Note (including in connection with an offer to purchase), or to bring suit for the enforcement of any such payment on or after such respective dates, shall not be impaired
or affected without the consent of such Holder. 
 SECTION 6.08. Collection Suit by Trustee. 
 If an Event of Default specified in Section 6.01 (a) or (b) hereof occurs and is continuing, the Trustee is authorized to
recover judgment in its own name and as trustee of an express trust against the Company for the whole amount of principal amount of, premium and interest remaining unpaid on the Notes and interest on overdue principal and, to the extent lawful,
interest and such further amount as shall be sufficient to cover the costs and expenses of collection, including the reasonable compensation, expenses, disbursements and advances of the Trustee, its agents and counsel. 
 SECTION 6.09. Trustee May File Proofs of Claim. 
 The Trustee is authorized to file such proofs of claim and other papers or documents as may be necessary or advisable in order to have the claims of the Trustee (including

  

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any claim for the reasonable compensation, expenses, disbursements and advances of the Trustee, its agents and counsel) and the Holders allowed in any judicial proceedings relative to the Company
(or any other obligor upon the Notes), its creditors or its property and shall be entitled and empowered to collect, receive and distribute any money or other property payable or deliverable on any such claims, and any custodian in any such judicial
proceeding is hereby authorized by each Holder to make such payments to the Trustee, and in the event that the Trustee shall consent to the making of such payments directly to the Holders, to pay to the Trustee any amount due to it for the
reasonable compensation, expenses, disbursements and advances of the Trustee, its agents and counsel, and any other amounts due the Trustee under Section 7.07 hereof. To the extent that the payment of any such compensation, expenses,
disbursements and advances of the Trustee, its agents and counsel, and any other amounts due the Trustee under Section 7.07 hereof out of the estate in any such proceeding, shall be denied for any reason, payment of the same shall be secured by
a Lien on, and shall be paid out of, any and all distributions, dividends, money, securities and other properties that the Holders may be entitled to receive in such proceeding whether in liquidation or under any plan of reorganization or
arrangement or otherwise. Nothing herein contained shall be deemed to authorize the Trustee to authorize or consent to or accept or adopt on behalf of any Holder any plan of reorganization, arrangement, adjustment or composition affecting the Notes
or the rights of any Holder, or to authorize the Trustee to vote in respect of the claim of any Holder in any such proceeding. 
 SECTION 6.10. Priorities. 
 Any money collected by the Trustee pursuant to this Article, and any other money or
property distributable in respect of the Company’s obligations under this Indenture after an Event of Default, shall be applied in the following order: 
 First: to the Trustee (including a predecessor Trustee), its agents and attorneys for amounts due under
Section 7.07 hereof, including payment of all compensation, expense and liabilities incurred, and all advances made, by the Trustee (including a predecessor Trustee) and the costs and expenses of collection; 
 Second: to Holders for amounts due and unpaid on the Notes for principal amount, premium and interest, ratably,
without preference or priority of any kind, according to the amounts due and payable on the Notes for principal amount, premium and interest, respectively; and 
 Third: to the Company or to such party as a court of competent jurisdiction shall direct. 
 The Trustee may fix a record date and payment date for any payment to Holders pursuant to this Section 6.10. 
 SECTION 6.11. Undertaking for Costs. 
 In any suit for the enforcement of any right or remedy under this Indenture or in any suit against the Trustee for any action taken or omitted by it as a Trustee, a court in its discretion may require the
filing by any party litigant in the suit of an undertaking to pay the costs of the suit, and the court in its discretion may assess reasonable costs, including reasonable

  

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attorneys’ fees and expenses, against any party litigant in the suit, having due regard to the merits and good faith of the claims or defenses made by the party litigant. This
Section does not apply to a suit by the Trustee, a suit by a Holder pursuant to Section 6.07 hereof or a suit by Holders of more than 10% in principal amount of the then-outstanding Notes. 
 ARTICLE VII 
 TRUSTEE 
 SECTION 7.01. Duties of Trustee. 
 (a) If an Event of Default has occurred and is continuing, the Trustee shall exercise such of the rights and powers vested in it by this
Indenture and use the same degree of care and skill in their exercise as a prudent person would exercise or use under the circumstances in the conduct of his or her own affairs. 
 (b) Except during the continuance of an Event of Default: 
 (i) the duties of the Trustee shall be determined solely by the express provisions of this Indenture, and the Trustee need
perform only those duties that are specifically set forth in this Indenture and no others, and no implied covenants or obligations shall be read into this Indenture against the Trustee; and 
 (ii) in the absence of bad faith on its part, the Trustee may conclusively rely, as to the truth of the statements and the
correctness of the opinions expressed therein, upon certificates or opinions furnished to the Trustee and conforming to the requirements of this Indenture. However, in the case of certificates or opinions which are specifically provided for by any
provision herein to be provided to it, the Trustee shall examine the certificates and opinions which are specifically required to be delivered to the Trustee by any provision of this Indenture to determine whether or not they conform to the
requirements of this Indenture (but need not confirm or investigate the accuracy of mathematical calculations or other facts stated therein). 
 (c) The Trustee may not be relieved from liabilities for its own negligent action, its own negligent failure to act or its own willful misconduct, except that: 
 (i) this paragraph does not limit the effect of paragraphs (b) or (e) of this Section; 
 (ii) the Trustee shall not be liable for any error of judgment made in good faith by a Responsible Officer, unless it is
proved that the Trustee was negligent in ascertaining the pertinent facts; and 
 (iii) the Trustee shall not be
liable with respect to any action it takes or omits to take in good faith in accordance with a direction received by it pursuant to Section 6.05 hereof. 
  

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 (d) Whether or not therein expressly so provided, every provision of this Indenture that in
any way relates to the Trustee is subject to paragraphs (a), (b), (c), (e) and (f) of this Section. 
 (e) No
provision of this Indenture shall require the Trustee to expend or risk its own funds or incur any liability. The Trustee shall be under no obligation to exercise any of its rights and powers under this Indenture at the request of any Holders,
unless such Holder shall have offered to the Trustee security and indemnity satisfactory to it against any loss, liability or expense. 
 (f) The Trustee shall not be liable for interest on any money received by it except as the Trustee may agree in writing with the Company. Money held in trust by the Trustee need not be segregated from other funds except to the extent
required by law. 
 SECTION 7.02. Rights of Trustee. 
 (a) The Trustee may conclusively rely upon any document believed by it to be genuine and to have been signed or presented by the proper
Person. The Trustee need not investigate any fact or matter stated in the document. 
 (b) Before the Trustee acts or refrains
from acting, it may require an Officers’ Certificate or an Opinion of Counsel or both. The Trustee shall not be liable for any action it takes or omits to take in good faith in reliance on such Officers’ Certificate or Opinion of Counsel.
The Trustee may consult with counsel of its selection, and the advice of such counsel or any Opinion of Counsel shall be full and complete authorization and protection from liability in respect of any action taken, suffered or omitted by it
hereunder in good faith and in reliance thereon. 
 (c) The Trustee may act through its attorneys and agents and shall not be
responsible for the misconduct or negligence of any agent appointed with due care. 
 (d) The Trustee shall not be liable for
any action it takes or omits to take in good faith that it believes to be authorized or within the rights or powers conferred upon it by this Indenture. 
 (e) Unless otherwise specifically provided in this Indenture, any demand, request, direction or notice from the Company shall be sufficient if signed by an Officer of the Company. 
 (f) The Trustee shall be under no obligation to exercise any of the rights or powers vested in it by this Indenture at the request or
direction of any of the Holders unless such Holders shall have offered to the Trustee security or indemnity reasonably satisfactory to it against the costs, expenses and liabilities that might be incurred by it in compliance with such request or
direction. 
 (g) The Trustee shall not be bound to make any investigation into the facts or matters stated in any resolution,
certificate, statement, instrument, opinion, report, notice, request, direction, consent, order, bond, debenture, note, other evidence of Indebtedness or other paper or document, but the Trustee, in its discretion, may make such further inquiry or

  

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investigation into such facts or matters as it may see fit, and, if the Trustee shall determine to make such further inquiry or investigation, it shall be entitled to examine the books, records
and premises of the Company, personally or by agent or attorney at the sole cost of the Company and shall incur no liability or additional liability of any kind by reason of such inquiry or investigation. 
 (h) The rights, privileges, protections, immunities and benefits given to the Trustee, including, without limitation, its right to be
indemnified, are extended to, and shall be enforceable by, the Trustee in each of its capacities hereunder, and each agent, custodian and other Person employed to act hereunder. 
 (i) The permissive right of the Trustee to take or refrain from taking any actions enumerated in this Indenture shall not be construed as a
duty. 
 (j) The Trustee shall not be responsible or liable for any failure or delay in the performance of its obligations under
this Indenture arising out of or caused, directly or indirectly, by circumstances beyond its reasonable control, including, without limitation, acts of God; earthquakes; fire; flood; terrorism; wars and other military disturbances; sabotage;
epidemics; riots; interruptions; loss or malfunctions of utilities, computer (hardware or software) or communication services; accidents; labor disputes; acts of civil or military authority and governmental action. 
 (k) Anything in this Indenture notwithstanding, in no event shall the Trustee be liable for special, indirect, punitive or consequential
loss or damage of any kind whatsoever (including but not limited to loss of profit), even if the Company has been advised as to the likelihood of such loss or damage and regardless of the form of action. 
 (l) The Trustee may request that the Company deliver a certificate setting forth the names of individuals and/or titles of officers
authorized at such time to take specified actions pursuant to this Indenture. 
 SECTION 7.03. Individual Rights of
Trustee. 
 The Trustee in its individual or any other capacity may become the owner or pledgee of Notes and may otherwise
deal with the Company or any Affiliate of the Company with the same rights it would have if it were not Trustee. However, in the event that the Trustee acquires any conflicting interest, it must eliminate such conflict within 90 days, apply to
the SEC for permission to continue as trustee or resign. The Registrar or any Paying Agent may do the same with like rights and duties. The Trustee is also subject to Sections 7.10 and 7.11 hereof. 
 SECTION 7.04. Trustee’s Disclaimer. 
 The Trustee shall not be responsible for, and makes no representation as to the validity or adequacy of, this Indenture or the Notes, it shall not be accountable for the Company’s use of the proceeds
from the Notes or any money paid to the Company or upon the Company’s direction under any provision of this Indenture, it shall not be responsible for the use or application of any money received by any Paying Agent other than the Trustee and
it shall not be responsible for any statement or recital herein or any statement in the Notes or any other document in connection with the sale of the Notes or pursuant to this Indenture other than its certificate of authentication. 
  

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 SECTION 7.05. Notice of Defaults. 
 (a) The Trustee shall not be deemed to have notice of any Default or Event of Default unless a Responsible Officer of the Trustee has actual
knowledge thereof or unless written notice of such a Default or Event of Default is received by the Trustee at the Corporate Trust Office of the Trustee, and such notice references the Notes and this Indenture. 
 (b) Within 90 days after the occurrence of a Default or an Event of Default, the Trustee shall mail to Holders, as their names and addresses
appear in the security register for the Notes, a notice of the Default or Event of Default known to the Trustee, unless such Default or Event of Default shall have been cured or waived. Except in the case of a Default or Event of Default in payment
of principal of, premium, if any, or interest on any Note, the Trustee may withhold the notice if and so long as a committee of its Responsible Officers in good faith determines that withholding the notice is in the interests of the Holders.

 SECTION 7.06. Reports by Trustee to Holders of the Notes. 
 Within 60 days after each May 15 beginning with the May 15 following the date of this Indenture, and for so long as Notes remain
outstanding, the Trustee shall mail to the Holders a brief report dated as of such reporting date that complies with TIA § 313(a) (but if no event described in TIA § 313(a) has occurred within the twelve months preceding the
reporting date, no report need be transmitted). The Trustee also shall comply with TIA § 313(b)(2). The Trustee shall also transmit by mail all reports as required by TIA § 313(c). 
 A copy of each report at the time of its mailing to the Holders shall be mailed to the Company and filed with the SEC and each stock
exchange on which the Notes are listed in accordance with TIA § 313(d). The Company shall promptly notify the Trustee when the Notes are listed on, or delisted from, any stock exchange. 
 SECTION 7.07. Compensation and Indemnity. 
 The Company, Holdings and the Guarantors shall, jointly and severally, pay to the Trustee from time to time such compensation for its acceptance of this Indenture and services hereunder as the parties
shall agree from time to time. The Trustee’s compensation shall not be limited by any law on compensation of a trustee of an express trust. The Company, Holdings and the Guarantors shall reimburse the Trustee promptly upon request for all
reasonable disbursements, advances and expenses incurred or made by it in addition to the compensation for its services. Such expenses shall include the reasonable compensation, disbursements and expenses of the Trustee’s agents and counsel.

 The Company, Holdings and the Guarantors, jointly and severally, shall indemnify the Trustee against any and all losses,
claims, damages, liabilities or expenses (including reasonable attorneys’ fees and expenses) incurred by it arising out of, or in connection with, the acceptance or administration of its duties under this Indenture, including the costs and
expenses of enforcing this Indenture against the Company, Holdings and the Guarantors

  

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(including this Section 7.07) and defending itself against any claim (whether asserted by the Company, Holdings and the Guarantors or any Holder or any other person) or liability in
connection with the exercise or performance of any of its powers or duties hereunder, except to the extent any such loss, liability or expense shall be determined to have been caused by its own negligence or bad faith. The Trustee shall notify the
Company, Holdings and the Guarantors promptly of any claim of which a Responsible Offer has received notice for which it may seek indemnity. Failure by the Trustee to so notify the Company shall not relieve the Company of its obligations hereunder.
The Company shall defend the claim, and the Trustee shall cooperate in the defense. The Trustee may have separate counsel, and the Company shall pay the reasonable fees and expenses of such counsel. The Company, Holdings and the Guarantors need not
pay for any settlement made without their consent, which consent shall not be unreasonably withheld. 
 The obligations of the
Company, Holdings and the Guarantors under this Section 7.07 shall survive the resignation or removal of the Trustee, the satisfaction and discharge and the termination of this Indenture. 
 To secure the Company’s, Holdings’ and the Guarantors’ payment obligations in this Section, the Trustee shall have a Lien
prior to the Notes on all money or property held or collected by the Trustee, except that held in trust to pay principal and interest on particular Notes. Such Lien shall survive the resignation or removal of the Trustee, the satisfaction and
discharge and the termination of this Indenture. 
 In addition, and without prejudice to the rights provided to the Trustee
under any of the provisions of this Indenture, when the Trustee incurs expenses or renders services after an Event of Default specified in Section 6.01(f) or (g) hereof occurs, the expenses and the compensation for the services
(including the fees and expenses of its agents and counsel) are intended to constitute expenses of administration under any Bankruptcy Law. 
 “Trustee” for purposes of this Section shall include any predecessor Trustee and the Trustee in each of its capacities hereunder and each agent, custodian and other person employed to act
hereunder; provided, however, that the negligence, willful misconduct or bad faith of any Trustee hereunder shall not affect the rights of any other Trustee hereunder. 
 The Trustee shall comply with the provisions of TIA § 313(b)(2) to the extent applicable. 
 SECTION 7.08. Replacement of Trustee. 
 A resignation or removal of the Trustee and appointment of a successor Trustee shall become effective only upon the successor Trustee’s acceptance of appointment as provided in this Section.

 The Trustee may resign in writing at any time and be discharged from the trust hereby created by so notifying the Company.
The Holders of Notes of a majority in principal amount of the then-outstanding Notes may remove the Trustee by so notifying the Trustee and the Company in writing. The Company may remove the Trustee if: 
 (a) the Trustee fails to comply with Section 7.10 hereof, 
  

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 (b) the Trustee is adjudged bankrupt or insolvent, or an order for relief is
entered with respect to the Trustee under any Bankruptcy Law; 
 (c) a custodian or public officer takes charge
of the Trustee or its property; or 
 (d) the Trustee becomes incapable of acting. 
 If the Trustee resigns or is removed, or if a vacancy exists in the office of Trustee for any reason, the Company shall promptly appoint a
successor Trustee. Within one year after the successor Trustee takes office, the Holders of a majority in principal amount of the then-outstanding Notes may appoint a successor Trustee to replace the successor Trustee appointed by the Company.

 If a successor Trustee does not take office within 60 days after the retiring Trustee resigns or is removed, the retiring
Trustee, the Company, or the Holders of at least 10% in principal amount of the then-outstanding Notes may petition any court of competent jurisdiction, at the expense of the Company, for the appointment of a successor Trustee. 
 If the Trustee, after written request by any Holder who has been a Holder for at least six months, fails to comply with Section 7.10,
such Holder may petition any court of competent jurisdiction for the removal of the Trustee and the appointment of a successor Trustee. 
 A successor Trustee shall deliver a written acceptance of its appointment to the retiring Trustee and to the Company. Thereupon, the resignation or removal of the retiring Trustee shall become effective,
and the successor Trustee shall have all the rights, powers and duties of the Trustee under this Indenture. The successor Trustee shall mail a notice of its succession to Holders. The retiring Trustee shall promptly transfer all property held by it
as Trustee to the successor Trustee, provided that all sums owing to the Trustee hereunder have been paid and are subject to the Lien provided for in Section 7.07 hereof. Notwithstanding replacement of the Trustee pursuant to this
Section 7.08, the Company’s obligations under Section 7.07 hereof shall continue for the benefit of the retiring Trustee. 
 SECTION 7.09. Successor Trustee by Merger, etc. 
 If the Trustee
consolidates, merges or converts into, or transfers all or substantially all of its corporate trust business to, another corporation, the successor corporation without any further act shall be the successor Trustee. 
 SECTION 7.10. Eligibility; Disqualification. 
 There shall at all times be a Trustee hereunder that is a corporation organized and doing business under the laws of the United States of America or of any State thereof, that is authorized under such
laws to exercise corporate trustee power, that is subject to supervision or examination by federal or state authorities and that has a combined capital and surplus of at least $100.0 million as set forth in its most recent published annual report of
condition. 
 This Indenture shall always have a Trustee who satisfies the requirements of TIA § 310(a)(1), (2) and
(5). The Trustee is subject to TIA § 310(b). 
  

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 SECTION 7.11. Preferential Collection of Claims Against Company. 
 The Trustee is subject to TIA § 311(a), excluding any creditor relationship listed in TIA § 311(b). A Trustee who has resigned or
been removed shall be subject to TIA § 311(a) to the extent indicated therein. 
 ARTICLE VIII 
 Legal Defeasance and Covenant Defeasance Section 
 SECTION 8.01. Option to Effect Legal Defeasance or Covenant Defeasance. 
 The Company may, at the option of its Board of Directors evidenced by a resolution set forth in an Officers’ Certificate, at any time elect to have either Section 8.02 or 8.03 hereof applied to all outstanding Notes upon
compliance with the conditions set forth below in this Article 8. 
 SECTION 8.02. Legal Defeasance and Discharge.

 Upon the Company’s exercise under Section 8.01 hereof of the option applicable to this Section 8.02, the
Company shall, subject to the satisfaction of the conditions set forth in Section 8.04 hereof, be deemed to have been discharged from its obligations with respect to all outstanding Notes on the date the conditions set forth below are satisfied
(hereinafter, “Legal Defeasance”). For this purpose, Legal Defeasance means that the Company shall be deemed to have paid and discharged the entire Indebtedness represented by the outstanding Notes, which shall thereafter be deemed
to be “outstanding” only for the purposes of Section 8.05 hereof and the other Sections of this Indenture referred to in (a) and (b) below, and to have satisfied all its other obligations under such Notes and this Indenture
(and the Trustee, on demand of, and at the expense of, the Company, shall execute proper instruments acknowledging the same), except for the following provisions which shall survive until otherwise terminated or discharged hereunder: (a) the
rights of Holders of outstanding Notes to receive solely from the trust fund described in Section 8.04 hereof, and as more fully set forth in such Section, payments in respect of the principal amount of, premium, if any, and interest on, such
Notes when such payments are due, (b) the Company’s obligations with respect to such Notes under Article 2 and Section 4.02 hereof, (c) the rights, powers, trusts, duties and immunities of the Trustee hereunder, and the
Company’s obligations in connection therewith, and (d) the provisions of this Article 8 with respect to Legal Defeasance. Subject to compliance with this Article 8, the Company may exercise its option under this Section 8.02
notwithstanding the prior exercise of its option under Section 8.03 hereof. 
 SECTION 8.03. Covenant Defeasance.

 Upon the Company’s exercise under Section 8.01 hereof of the option applicable to this Section 8.03, the
Company shall, subject to the satisfaction of the conditions set forth in Section 8.04 hereof, be released from its obligations under the covenants contained in Sections 4.07, 4.08, 4.09, 4.10, 4.11, 4.12, 4.13, 4.15, 4.16, 4.17 and 4.18 hereof
with respect to the outstanding Notes on and after the date the conditions set forth in Section 8.04 hereof are satisfied (hereinafter, “Covenant Defeasance”), and the Notes shall thereafter be deemed not

  

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“outstanding” for the purposes of any direction, waiver, consent or declaration or act of Holders (and the consequences of any thereof) in connection with such covenants but shall
continue to be deemed “outstanding” for all other purposes hereunder (it being understood that such Notes shall not be deemed outstanding for accounting purposes). For this purpose, Covenant Defeasance means that, with respect to the
outstanding Notes, the Company may omit to comply with and shall have no liability in respect of any term, condition or limitation set forth in any such covenant, whether directly or indirectly, by reason of any reference elsewhere herein to any
such covenant or by reason of any reference in any such covenant to any other provision herein or in any other document, and such omission to comply shall not constitute a Default or an Event of Default under Section 6.01 hereof, but, except as
specified above, the remainder of this Indenture and such Notes shall be unaffected thereby. In addition, upon the Company’s exercise under Section 8.01 hereof of the option applicable to this Section 8.03 hereof, subject to the
satisfaction of the conditions set forth in Section 8.04 hereof, Sections 6.01(d) and 6.01(e) hereof shall not constitute Events of Default. 
 SECTION 8.04. Conditions to Legal or Covenant Defeasance. 
 The following
shall be the conditions to the application of either Section 8.02 or 8.03 hereof to the outstanding Notes: 
 In order to
exercise either Legal Defeasance or Covenant Defeasance: 
 (a) the Company must irrevocably deposit with the
Trustee, in trust, for the benefit of the Holders, cash in United States dollars, non-callable Government Securities or a combination thereof, in such amounts as will be sufficient, in the opinion of a nationally-recognized firm of independent
public accountants, to pay the principal amount at maturity of, premium and interest on, the outstanding Notes on the stated date for payment thereof or on the applicable redemption date, as the case may be; 
 (b) in the case of an election under Section 8.02 hereof, the Company shall have delivered to the Trustee an Opinion of
Counsel in the United States of America reasonably acceptable to the Trustee confirming that (A) the Company has received from, or there has been published by, the Internal Revenue Service a ruling or (B) since the date of this Indenture,
there has been a change in the applicable Federal income tax law, in either case to the effect that, and based thereon such Opinion of Counsel shall confirm that, the Holders of the outstanding Notes will not recognize income, gain or loss for
Federal income tax purposes as a result of such Legal Defeasance and will be subject to Federal income tax on the same amounts, in the same manner and at the same times as would have been the case if such Legal Defeasance had not occurred;

 (c) in the case of an election under Section 8.03 hereof, the Company shall have delivered to the
Trustee an Opinion of Counsel in the United States of America reasonably acceptable to the Trustee confirming that the Holders of the outstanding Notes will not recognize income, gain or loss for Federal income tax purposes as a result of such
Covenant Defeasance and will be subject to Federal income tax on the same amounts, in the same manner and at the same times as would have been the case if such Covenant Defeasance had not occurred; 
  

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 (d) no Default or Event of Default shall have occurred and be continuing on
the date of such deposit (other than a Default or Event of Default resulting from the incurrence of Indebtedness all or a portion of the proceeds of which will be used to defease the Notes pursuant to this Article 8 concurrently with such
incurrence and the grant of a Lien to secure such Indebtedness) or, insofar as Section 6.01 (f) or 6.01(g) hereof is concerned, at any time in the period ending on the 91st day after the date of deposit; 
 (e) such Legal Defeasance or Covenant Defeasance shall not result in a breach or violation of, or constitute a default
under, this Indenture (other than a Default or an Event of Default resulting from the borrowing of funds to be applied to such deposit and the grant of any Lien securing such borrowing) or any other material agreement or instrument to which the
Company or any of its Subsidiaries is a party or by which the Company or any of its Subsidiaries is bound; 
 (f) the Company shall have delivered to the Trustee an Opinion of Counsel (which may be subject to customary exceptions) to the effect that (A) the trust funds will not be subject to any rights of holders of Senior Debt, including,
without limitation, those arising under this Indenture, and (B) after the 91st day following the deposit, the trust funds will not be subject to the effect of the preference provisions of Section 547 of the United States Federal Bankruptcy
Code; 
 (g) the Company shall have delivered to the Trustee an Officers’ Certificate stating that the
deposit was not made by the Company with the intent of preferring the Holders over any other creditors of the Company or with the intent of defeating, hindering, delaying or defrauding any other creditors of the Company or others; 
 (h) the Company shall have delivered to the Trustee an Officers’ Certificate and an Opinion of Counsel, each stating
that all conditions precedent provided for, or relating to, the Legal Defeasance or the Covenant Defeasance have been complied with; and 
 (i) the Company shall have paid, or duly provided for payment of, all amounts then due to the Trustee pursuant to Section 7.07 hereof. 
 Notwithstanding the foregoing, the Opinion of Counsel required by clause (b) above with respect to a Legal Defeasance need not be
delivered if all Notes not therefor delivered to the Trustee for cancellation (A) have become due and payable or (B) will become due and payable on the maturity date within one year under arrangements satisfactory to the Trustee for giving
of notice of redemption by the Trustee in the name, and at the expense, of the Company. 
 SECTION 8.05. Deposited Money and
Government Securities to Be Held in Trust; Other Miscellaneous Provisions. 
 Securities (including the proceeds thereof)
deposited with the Trustee (or other qualifying trustee, collectively for purposes of this Section 8.05, the “Trustee”) pursuant to Section 8.04 hereof in respect of the outstanding Notes shall be held in trust and applied
by the Trustee, in accordance with the provisions of such Notes and this Indenture, to the payment, either directly

  

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or through any Paying Agent (including the Company acting as Paying Agent) as the Trustee may determine, to the Holders of such Notes of all sums due and to become due thereon in respect of
principal amount, premium, if any, and interest, but such money need not be segregated from other funds except to the extent required by law. 
 The Company shall pay and indemnify the Trustee against any tax, fee or other charge imposed on, or assessed against, the cash or non-callable Government Securities deposited pursuant to Section 8.04
hereof or the principal and interest received in respect thereof other than any such tax, fee or other charge which by law is for the account of the Holders of the outstanding Notes. 
 Anything in this Article 8 to the contrary notwithstanding, the Trustee shall deliver or pay to the Company from time to time upon the
request of the Company any money or non-callable Government Securities held by it as provided in Section 8.04 hereof which, in the opinion of a nationally-recognized firm of independent public accountants expressed in a written certification
thereof delivered to the Trustee (which may be the opinion delivered under Section 8.04(a) hereof), are in excess of the amount thereof that would then be required to be deposited to effect an equivalent Legal Defeasance or Covenant
Defeasance. 
 SECTION 8.06. Satisfaction and Discharge. 
 This Indenture shall be discharged and shall cease to be of further effect (except as to surviving rights or registration of transfer or
exchange of the Notes, as expressly provided for in this Indenture) as to all outstanding Notes when (i) either (a) all the Notes theretofore authenticated and delivered (except lost, stolen or destroyed Notes which have been replaced or
paid and Notes for whose payment money has theretofore been deposited in trust or segregated and held in trust by the Company and thereafter repaid to the Company or discharged from such trust) have been delivered to the Trustee for cancellation or
(b) all Notes not theretofore delivered to the Trustee for cancellation have become due and payable, pursuant to an optional redemption notice or otherwise, and the Company has irrevocably deposited or caused to be deposited with the Trustee
funds in an amount sufficient to pay and discharge the entire Indebtedness on the Notes not theretofore delivered to the Trustee for cancellation, for principal of, premium, if any, and interest on the Notes to the date of deposit together with
irrevocable instructions from the Company directing the Trustee to apply such funds to the payment thereof at maturity or redemption, as the case may be; (ii) the Company has paid all other sums payable under this Indenture by the Company; and
(iii) the Company has delivered to the Trustee an Officers’ Certificate and an Opinion of Counsel stating that all conditions precedent under this Indenture relating to the satisfaction and discharge of this Indenture have been complied
with. 
 SECTION 8.07. Repayment to Company. 
 Any money deposited with the Trustee or any Paying Agent, or then held by the Company, for two years after such principal and premium, if
any, or interest has become due and payable shall be paid to the Company on its request or (if then held by the Company) shall be discharged from such trust; and the Holder of such Note shall thereafter, as a secured creditor, look only to the
Company for payment thereof, and all liability of the Trustee or such Paying Agent with respect to such trust money, and all liability of the Company as trustee thereof, shall

  

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thereupon cease; provided, however, that the Trustee or such Paying Agent, before being required to make any such repayment, may, at the expense of the Company, cause to be
published once, in the New York Times and The Wall Street Journal (national edition), notice that such money remains unclaimed and that, after a date specified therein, which shall not be less than 30 days from the date of such notification or
publication, any unclaimed balance of such money then remaining will be repaid to the Company. 
 SECTION 8.08.
Reinstatement. 
 If the Trustee or Paying Agent is unable to apply any United States dollars or non-callable Government
Securities in accordance with Section 8.02 or 8.03 hereof, as the case may be, by reason of any order or judgment of any court or governmental authority enjoining, restraining or otherwise prohibiting such application, then the Company’s
obligations under this Indenture and the Notes shall be revived and reinstated as though no deposit had occurred pursuant to Section 8.02 or 8.03 hereof until such time as the Trustee or Paying Agent is permitted to apply all such money in
accordance with Section 8.02 or 8.03 hereof, as the case may be; provided, however, that, if the Company makes any payment of principal of, premium, if any, or interest on any Note following the reinstatement of its obligations,
the Company shall be subrogated to the rights of the Holders of such Notes to receive such payment from the money held by the Trustee or Paying Agent. 
 SECTION 8.09. Survival. 
 The Trustee’s rights under this
Article 8 shall survive termination of this Indenture or the resignation or removal of the Trustee. 
 ARTICLE IX

 Amendment, Supplement and Waiver 
 SECTION 9.01. Without Consent of Holders of Notes. 
 Notwithstanding
Section 9.02 of this Indenture, the Company and the Trustee may amend or supplement this Indenture, the Guarantees or the Notes without the consent of any Holder: 
 (a) to cure any ambiguity, defect or inconsistency; 
 (b) to provide for uncertificated Notes in addition to, or in place of, certificated Notes or to alter the provisions of
Article 2 or the Appendix hereof relating to the form of the Notes (including the related definitions) in a manner that does not materially adversely affect any Holder; 
 (c) to provide for the assumption of the Company’s, Holdings’ or a Guarantor’s obligations to the Holders by
a successor to the Company, Holdings or a Guarantor pursuant to Article 5 or Article 11 hereof, 
  

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 (d) to make any change that would provide any additional rights or benefits
to the Holders or that does not adversely affect the legal rights hereunder of any Holder; 
 (e) to comply with
requirements of the SEC in order to effect or maintain the qualification of this Indenture under the TIA; 
 (f)
to provide for the issuance of Notes issued after the Issue Date in accordance with the limitations set forth in this Indenture; 
 (g) to allow any Guarantor to execute a supplemental indenture and/or a Guarantee with respect to the Notes; 
 (h) to provide for the issuance of Exchange Notes or Private Exchange Notes; or 
 (i) to conform the text of the Indenture, the Guarantees or the Notes to any provision of the Description of Notes to the extent that such provision in the Description of Notes was intended to be a
verbatim recitation of a provision of the Indenture, the Guarantees or the Notes. 
 Upon the request of the Company accompanied
by a resolution of its Board of Directors authorizing the execution of any such amended or supplemental Indenture, and upon receipt by the Trustee of the documents described in Section 7.02 hereof, the Trustee shall join with the Company,
Holdings and the Guarantors in the execution of any amended or supplemental Indenture authorized or permitted by the terms of this Indenture and to make any further appropriate agreements and stipulations that may be therein contained, but the
Trustee shall not be obligated to enter into such amended or supplemental Indenture that affects its own rights, duties or immunities under this Indenture or otherwise. 
 SECTION 9.02. With Consent of Holders of Notes. 
 Except as provided below
in this Section 9.02, this Indenture (including Sections 3.09, 4.10 and 4.15 hereof), the Guarantees and the Notes may be amended or supplemented with the consent of the Holders of at least a majority in principal amount of the Notes then
outstanding voting as a single class (including consents obtained in connection with a tender offer or exchange offer for, or purchase of, the Notes), and, subject to Sections 6.04 and 6.07 hereof, any existing Default or Event of Default (other
than a Default or Event of Default in the payment of the principal of, premium, if any, or interest on the Notes, except a payment default resulting from an acceleration that has been rescinded) or compliance with any provision of this Indenture,
the Guarantees or the Notes may be waived with the consent of the Holders of a majority in principal amount of the then-outstanding Notes voting as a single class (including consents obtained in connection with a tender offer or exchange offer for,
or purchase of, the Notes). Section 2.08 hereof shall determine which Notes are considered to be “outstanding” for purposes of this Section 9.02. 
 Upon the request of the Company accompanied by a resolution of its Board of Directors authorizing the execution of any such amended or supplemental Indenture, and upon the filing with the Trustee of
evidence satisfactory to the Trustee of the consent of the Holders as aforesaid, and upon receipt by the Trustee of the documents described in Section 7.02 hereof, the

  

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Trustee shall join with the Company in the execution of such amended or supplemental Indenture unless such amended or supplemental Indenture directly affects the Trustee’s own rights, duties
or immunities under this Indenture or otherwise, in which case the Trustee may, in its discretion, but shall not be obligated to, enter into such amended or supplemental Indenture. 
 It shall not be necessary for the consent of the Holders under this Section 9.02 to approve the particular form of any proposed
amendment or waiver, but it shall be sufficient if such consent approves the substance thereof. 
 After an amendment,
supplement or waiver under this Section becomes effective, the Company shall mail to the Holders of Notes affected thereby a notice briefly describing the amendment, supplement or waiver. Any failure of the Company to mail such notice, or any
defect therein, shall not, however, in any way impair or affect the validity of any such amended or supplemental Indenture or waiver. Subject to Sections 6.04 and 6.07 hereof, the Holders of a majority in aggregate principal amount of the Notes
then outstanding voting as a single class may waive compliance in a particular instance by the Company with any provision of this Indenture or the Notes. However, without the consent of each Holder affected, an amendment or waiver under this
Section 9.02 may not (with respect to any Notes held by a non-consenting Holder): 
 (a) reduce the
principal amount of Notes whose Holders must consent to an amendment, supplement or waiver; 
 (b) reduce the
principal of, or change or have the effect of changing, the fixed maturity of any Note, or change the date on which any Note may be subject to redemption or reduce the redemption price therefor; 
 (c) reduce the rate of, or change or have the effect of changing, the time for payment of interest, including defaulted
interest, on any Note; 
 (d) waive a Default or Event of Default in the payment of principal of or premium, if
any, or interest on the Notes (except a rescission of acceleration of the Notes by the Holders of at least a majority in aggregate principal amount at maturity of the then outstanding Notes and a waiver of the payment default that resulted from such
acceleration); 
 (e) make any Notes payable in money other than that stated in the Notes; 
 (f) make any change in the provisions of this Indenture protecting the right of each Holder to receive payment of principal
of and interest on such Note on or after the due date thereof or to bring suit to enforce such payment, or permitting Holders of a majority in principal amount of Notes to waive Defaults or Events of Default; 
 (g) after the Company’s obligation to purchase Notes arises thereunder, amend, change or modify in any material respect
the obligation of the Company to make and consummate a Change of Control Offer in the event of a Change of Control or modify any of the provisions or definitions with respect thereto after a Change of Control has occurred; 
  

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 (h) modify or change any provision of this Indenture or the related
definitions affecting the subordination or ranking of the Notes or the Guarantees in a manner which adversely affects the Holders; or 
 (i) make any change in the foregoing amendment and waiver provisions. 
 An
amendment under this Section may not make any change that adversely affects the rights under Article 10 or 12 hereof or any supplemental indenture to this Indenture providing for a Guarantee of the Notes by a Restricted Subsidiary of the
Company or any holder of Senior Debt of the Company, Holdings or of a Guarantor then outstanding (including any such change of this paragraph of this Section 9.02) unless the holders of such Senior Debt (or their Representative) consent to such
change. 
 SECTION 9.03. Compliance with Trust Indenture Act. 
 Every amendment or supplement to this Indenture or the Notes shall be set forth in an amended or supplemental Indenture that complies with
the TIA as then in effect. 
 SECTION 9.04. Revocation and Effect of Consents. 
 Until an amendment, supplement or waiver becomes effective, a consent to it by a Holder is a continuing consent by the Holder and every
subsequent Holder of a Note or portion of a Note that evidences the same debt as the consenting Holder’s Note, even if notation of the consent is not made on any Note. However, any such Holder or subsequent Holder may revoke the consent as to
its Note if the Trustee receives written notice of revocation before the date the waiver, supplement or amendment becomes effective. An amendment, supplement or waiver becomes effective in accordance with its terms and thereafter binds every Holder.

 SECTION 9.05. Notation on, or Exchange of, Notes. 
 The Trustee may place an appropriate notation about an amendment, supplement or waiver on any Note thereafter authenticated. The Company, in
exchange for all Notes, may issue, and the Trustee shall, upon receipt of an Authentication Order, authenticate, new Notes that reflect the amendment, supplement or waiver. 
 Failure to make the appropriate notation or issue a new Note shall not affect the validity and effect of such amendment, supplement or
waiver. 
 SECTION 9.06. Trustee to Sign Amendments, etc. 
 The Trustee shall sign any amended or supplemental Indenture authorized pursuant to this Article 9 if the amendment or supplement does
not adversely affect the rights, duties, liabilities or immunities of the Trustee. The Company may not sign an amendment or supplemental Indenture until the Board of Directors approves it. In executing any amended or supplemental indenture, the
Trustee shall be given and (subject to Section 7.01 hereof) shall be fully protected in relying upon, in addition to the documents required by Section 13.04 hereof, an Officer’s Certificate and an Opinion of Counsel stating that the
execution of such amended or supplemental indenture is authorized or permitted by this Indenture. 
  

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 ARTICLE X 
 SUBORDINATION 
 SECTION 10.01. Agreement to Subordinate. 

The Company agrees, and each Holder by accepting a Note agrees, that the Indebtedness evidenced by the Notes is subordinated in right of
payment, to the extent and in the manner provided in this Article 10, to the prior payment of all Senior Debt of the Company and that the subordination is for the benefit of, and enforceable by, the holders of such Senior Debt. The Notes shall
in all respects rank pari passu with all other Senior Subordinated Debt of the Company, and only Indebtedness of the Company which is Senior Debt of the Company shall rank senior to the Notes in accordance with the provisions set forth
herein. All provisions of this Article 10 shall be subject to Section 10.12. 
 SECTION 10.02. Liquidation,
Dissolution, Bankruptcy. 
 Upon any payment or distribution of the assets of the Company to creditors upon a total or
partial liquidation or a total or partial dissolution of the Company or in a bankruptcy, reorganization, insolvency, receivership or similar proceeding relating to the Company or its property: 
 (1) holders of Senior Debt of the Company shall be entitled to receive payment in full in cash of such Senior Debt before
Holders shall be entitled to receive any payment; and 
 (2) until the Senior Debt of the Company is paid in
full in cash, any payment or distribution to which Holders would be entitled but for this Article 10 shall be made to holders of such Senior Debt as their interests may appear, except that Holders may receive shares of stock and any debt
securities that are subordinated to such Senior Debt to at least the same extent as the Notes. 
 SECTION 10.03. Default on
Senior Debt of the Company. 
 The Company shall not pay the principal of, premium, if any, or interest on the Notes or make
any deposit pursuant to Section 8.04 and may not purchase, redeem or otherwise retire any Notes (collectively, “pay the Notes”) if either of the following (a “Payment Default”) occurs (1) any Designated
Senior Debt of the Company is not paid in full in cash when due; or (2) any other default on Designated Senior Debt of the Company occurs, and the maturity of such Designated Senior Debt is accelerated in accordance with its terms unless, in
either case, the Payment Default has been cured or waived and any such acceleration has been rescinded or such Designated Senior Debt has been paid in full in cash; provided, however, that the Company shall be entitled to pay the Notes
without regard to the foregoing if the Company and the Trustee receive written notice approving such payment from the Representative of any Designated Senior Debt with respect to which the Payment Default has occurred and is continuing. During the
continuance of any default (other than a Payment Default) with respect to any Designated Senior Debt of the Company pursuant to which the maturity thereof may be accelerated immediately without further notice (except such notice as may be required
to effect such acceleration) or the

  

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expiration of any applicable grace periods, the Company shall not pay the Notes for a period (a “Payment Blockage Period”) commencing upon the receipt by the Trustee of (with a
copy to the Company) written notice (a “Blockage Notice”) of such default from the Representative of such Designated Senior Debt specifying an election to effect a Payment Blockage Period and ending 179 days thereafter. The
Payment Blockage Period shall end earlier if such Payment Blockage Period is terminated (1) by written notice to the Trustee and the Company from the Person or Persons who gave such Blockage Notice; (2) because the default giving rise to
such Blockage Notice is cured, waived or otherwise no longer continuing; or (3) because such Designated Senior Debt has been discharged or repaid in full in cash. Notwithstanding the provisions described in the immediately preceding two
sentences (but subject to the provisions contained in the first sentence of this Section), unless the holders of such Designated Senior Debt or the Representative of such Designated Senior Debt shall have accelerated the maturity of such Designated
Senior Debt, the Company shall be entitled to resume payments on the Notes after termination of such Payment Blockage Period. The Notes shall not be subject to more than one Payment Blockage Period in any consecutive 360-day period, irrespective of
the number of defaults with respect to Designated Senior Debt of the Company during such period; provided, however, that if any Blockage Notice within such 360-day period is given by or on behalf of any holders of Designated Senior
Debt of the Company (other than the Bank Indebtedness), the Representative of the Bank Indebtedness shall be entitled to give another Blockage Notice within such period; provided further, however, that in no event shall the total
number of days during which any Payment Blockage Period or Periods is in effect exceed 179 days in the aggregate during any 360-day consecutive period, and there must be 181 days during any 360-day consecutive period during which no Payment
Blockage Period is in effect. For purposes of this Section, no default or event of default which existed or was continuing on the date of the commencement of any Payment Blockage Period with respect to the Designated Senior Debt of the Company
initiating such Payment Blockage Period shall be, or be made, the basis of the commencement of a subsequent Payment Blockage Period by the Representative of such Designated Senior Debt, whether or not within a period of 360 consecutive days,
unless such default or event of default shall have been cured or waived for a period of not less than 90 consecutive days. 
 SECTION 10.04. Acceleration of Payment of Notes. 
 If payment of the Notes is accelerated because of an Event
of Default, the Company or the Trustee shall promptly notify the holders of the Designated Senior Debt of the Company (or their Representatives) of the acceleration. 
 SECTION 10.05. When Distribution Must Be Paid Over. 
 If a distribution is
made to Holders that, because of this Article 10, should not have been made to them, the Holders who receive the distribution shall hold it in trust for holders of Senior Debt of the Company and pay it over to them as their interests may
appear. If any Designated Senior Debt of the Company is outstanding, the Company shall not pay the Notes until five Business Days after the Representatives of all the issues of Designated Senior Debt of the Company receive notice of such
acceleration and, thereafter, shall be entitled to pay the Notes only if this Article 10 otherwise permits payment at that time. 
  

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 SECTION 10.06. Subrogation. 
 After all Senior Debt of the Company is paid in full, and until the Notes are paid in full, Holders shall be subrogated to the rights of
holders of such Senior Debt to receive distributions applicable to such Senior Debt. A distribution made under this Article 10 to holders of such Senior Debt which otherwise would have been made to Holders is not, as between the Company and
Holders, a payment by the Company on such Senior Debt. 
 SECTION 10.07. Relative Rights. 
 This Article 10 defines the relative rights of Holders and holders of Senior Debt of the Company. Nothing in this Indenture shall:

 (1) impair, as between the Company and Holders, the obligation of the Company, which is absolute and
unconditional, to pay principal of and interest on the Notes in accordance with their terms; or 
 (2) prevent
the Trustee or any Holder from exercising its available remedies upon a Default, subject to the rights of holders of Senior Debt of the Company to receive distributions otherwise payable to Holders. 
 SECTION 10.08. Subordination May Not Be Impaired by Company. 
 No right of any holder of Senior Debt of the Company to enforce the subordination of the Indebtedness evidenced by the Notes shall be
impaired by any act or failure to act by the Company or by its failure to comply with this Indenture. 
 SECTION 10.09.
Rights of Trustee and Paying Agent. 
 Notwithstanding anything in this Article 10, the Trustee or Paying Agent
shall continue to make payments on the Notes and shall not be charged with knowledge of the existence of facts that under this Article 10 would prohibit the making of any payments to or by the Trustee unless and until, not less than two
Business Days prior to the date of such payment, a Responsible Officer of the Trustee receives written notice satisfactory to it that such payments are prohibited by this Article 10. The Company, a Representative or a holder of Senior Debt of
the Company shall be entitled to give the notice; provided, however, that, if an issue of Senior Debt of the Company has a Representative, only the Representative shall be entitled to give the notice. Prior to the receipt of any such
written notice, the Trustee shall be entitled in all respects conclusively to presume that no such fact exists. Unless the Trustee shall have received the notice provided for in the preceding sentence, the Trustee shall have full power and authority
to receive such payment and to apply the same to the purpose for which it was received and shall not be affected by any notice to the contrary which may be received by it on or after such date. The foregoing shall not apply to any Affiliate of the
Company acting as Paying Agent. 
 The Trustee in its individual or any other capacity shall be entitled to hold Senior Debt of
the Company with the same rights it would have if it were not Trustee. The Registrar and the Paying Agent shall be entitled to do the same with like rights. The Trustee shall be entitled to all the rights set forth in this Article 10 with
respect to any Senior Debt of the

  

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Company which may at any time be held by it, to the same extent as any other holder of such Senior Debt; and nothing in Article 7 shall deprive the Trustee of any of its rights as such
holder. Notwithstanding anything in this Article 10 to the contrary, all amounts owed to the Trustee (including amounts owed pursuant to Section 7.07 hereof) in each of its capacities hereunder shall not be subordinated to any Senior Debt
of the Company or otherwise. 
 SECTION 10.10. Distribution or Notice to Representative. 
 Whenever any Person is to make a distribution or give a notice to holders of Senior Debt of the Company, such Person shall be entitled to
make such distribution or give such notice to their Representative (if any). 
 SECTION 10.11. Not to Prevent Events of
Default or Limit Right to Accelerate. 
 The failure to make a payment pursuant to the Notes by reason of any provision in
this Article 10 shall not be construed as preventing the occurrence of a Default. Nothing in this Article 10 shall have any effect on the right of the Holders or the Trustee to accelerate the maturity of the Notes. 
 SECTION 10.12. Trust Moneys Not Subordinated. 
 Notwithstanding anything contained herein to the contrary, payments from money or the proceeds of Government Securities held in trust under Article 8 hereof by the Trustee for the payment of
principal of and interest on the Notes shall not be subordinated to the prior payment of any Senior Debt of the Company or subject to the restrictions set forth in this Article 10 if the provisions of this Article 10 were not violated at
the time funds were deposited in trust with the Trustee pursuant to Article 8 hereof, and none of the Holders shall be obligated to pay over any such amount to the Company or any holder of Senior Debt of the Company or any other creditor of the
Company. 
 SECTION 10.13. Trustee Entitled to Rely. 
 Upon any payment or distribution pursuant to this Article 10, the Trustee and the Holders shall be entitled to rely (1) upon any
order or decree of a court of competent jurisdiction in which any proceedings of the nature referred to in Section 10.02 hereof are pending, (2) upon a certificate of the liquidating trustee or agent or other Person making such payment or
distribution to the Trustee or to the Holders or (3) upon the Representatives of Senior Debt of the Company for the purpose of ascertaining the Persons entitled to participate in such payment or distribution, the holders of such Senior Debt and
other Indebtedness of the Company, the amount thereof or payable thereon, the amount or amounts paid or distributed thereon and all other facts pertinent thereto or to this Article 10. In the event that the Trustee determines, in good faith,
that evidence is required with respect to the right of any Person as a holder of Senior Debt of the Company to participate in any payment or distribution pursuant to this Article 10, the Trustee shall be entitled to request such Person to
furnish evidence to the reasonable satisfaction of the Trustee as to the amount of such Senior Debt held by such Person, the extent to which such Person is entitled to participate in such payment or distribution and other facts pertinent to the
rights of such Person under this Article 10, and, if such evidence is not furnished, the Trustee shall be entitled to defer any payment to such Person pending judicial determination as to the

  

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right of such Person to receive such payment. The provisions of Sections 7.01 and 7.02 hereof shall be applicable to all actions or omissions of actions by the Trustee pursuant to this
Article 10. 
 SECTION 10.14. Trustee to Effectuate Subordination. 
 Each Holder by accepting a Note authorizes and directs the Trustee on its behalf to execute such documentation and to take such action as
may be necessary or appropriate to acknowledge or effectuate the subordination between the Holders and the holders of Senior Debt of the Company as provided in this Article 10 and appoints the Trustee as attorney-in-fact for any and all such
purposes. 
 SECTION 10.15. Trustee Not Fiduciary for Holders of Senior Debt of the Company. 
 The Trustee shall not be deemed to owe any fiduciary duty to the holders of Senior Debt of the Company and shall not be liable to any such
holders if it shall mistakenly pay over or distribute to Holders or the Company or any other Person, money or assets to which any holders of Senior Debt of the Company shall be entitled by virtue of this Article 10 or otherwise. 
 SECTION 10.16. Reliance by Holders of Senior Debt of the Company on Subordination Provisions. 
 Each Holder, by accepting a Note, acknowledges and agrees that the foregoing subordination provisions are, and are intended to be, an
inducement and a consideration to each holder of any Senior Debt of the Company, whether such Senior Debt was created or acquired before or after the issuance of the Notes, to acquire and continue to hold, or to continue to hold, such Senior Debt,
and such holder of such Senior Debt shall be deemed conclusively to have relied on such subordination provisions in acquiring and continuing to hold, or in continuing to hold, such Senior Debt. 
 ARTICLE XI 
 Guarantees 
 SECTION 11.01. Guarantees. 
 Holdings and each Guarantor hereby unconditionally and irrevocably guarantees, jointly and severally, to each Holder and to the Trustee and
its successors and assigns (a) the full and punctual payment of principal of, and interest on, the Notes when due, whether at maturity, by acceleration, by redemption or otherwise, and all other monetary obligations of the Company under this
Indenture and the Notes and (b) the full and punctual performance within applicable grace periods of all other obligations of the Company under this Indenture and the Notes (all the foregoing being hereinafter collectively called the
“Guaranteed Obligations”). Holdings and each Guarantor further agree that the Guaranteed Obligations may be extended or renewed, in whole or in part, without notice or further assent from Holdings or such Guarantor and that Holdings
and such Guarantor will remain bound under this Article 11 notwithstanding any extension or renewal of any Guaranteed Obligation. 
  

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 Holdings and each Guarantor waives presentation to, demand of, payment from and protest to
the Company of any of the Guaranteed Obligations and also waives notice of protest for nonpayment. Holdings and each Guarantor waive notice of any default under the Notes or the Guaranteed Obligations. The obligations of Holdings and each Guarantor
hereunder shall not be affected by (a) the failure of any Holder or the Trustee to assert any claim or demand or to enforce any right or remedy against the Company or any other Person under this Indenture, the Notes or any other agreement or
otherwise; (b) any extension or renewal of any thereof; (c) any rescission, waiver, amendment or modification of any of the terms or provisions of this Indenture, the Notes or any other agreement; (d) the release of any security held
by any Holder or the Trustee for the Guaranteed Obligations or any of them; (e) the failure of any Holder or the Trustee to exercise any right or remedy against any other guarantor of the Obligations; or (f) except as set forth in
Section 11.07, any change in the ownership of Holdings or such Guarantor. 
 Holdings and each Guarantor further agrees
that its Guarantee herein constitutes a guarantee of payment, performance and compliance when due (and not a guarantee of collection) and waives any right to require that any resort be had by any Holder or the Trustee to any security held for
payment of the Guaranteed Obligations. 
 Each Guarantee is, to the extent and in the manner set forth in Article 12
hereof, subordinated and subject in right of payment to the prior payment in full of the principal of and premium, if any, and interest on all Senior Debt of Holdings or such Guarantor, as the case may be, and each Guarantee is made subject to such
provisions of this Indenture. 
 Except as expressly set forth in Sections 11.02 and 11.07 hereof, the obligations of
Holdings and each Guarantor hereunder shall not be subject to any reduction, limitation, impairment or termination for any reason, including any claim of waiver, release, surrender, alteration or compromise, and shall not be subject to any defense
of setoff, counterclaim, recoupment or termination whatsoever or by reason of the invalidity, illegality or unenforceability of the Guaranteed Obligations or otherwise. Without limiting the generality of the foregoing, the obligations of Holdings
and each Guarantor herein shall not be discharged or impaired or otherwise affected by the failure of any Holder or the Trustee to assert any claim or demand or to enforce any remedy under this Indenture, the Notes or any other agreement, by any
waiver or modification of any thereof, by any default, failure or delay, willful or otherwise, in the performance of the obligations or by any other act or thing or omission or delay to do any other act or thing which may or might in any manner, or
to any extent, vary the risk of such Holdings or such Guarantor or would otherwise operate as a discharge of Holdings or such Guarantor as a matter of law or equity. 
 Holdings and each Guarantor further agrees that its Guarantee herein shall continue to be effective or be reinstated, as the case may be, if, at any time, payment, or any part thereof, of principal of or
interest on any Guaranteed Obligation is rescinded or must otherwise be restored by any Holder or the Trustee upon the bankruptcy or reorganization of the Company or otherwise. 
 In furtherance of the foregoing, and not in limitation of any other right which any Holder or the Trustee has at law or in equity against
Holdings or any Guarantor by virtue hereof,

  

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upon the failure of the Company to pay the principal of or interest on any Guaranteed Obligation when and as the same shall become due, whether at maturity, by acceleration, by redemption or
otherwise, or to perform or comply with any other Guaranteed Obligation, Holdings and each Guarantor hereby promises to and shall, upon receipt of written demand by the Trustee, forthwith pay, or cause to be paid, in cash, to the Holders or the
Trustee an amount equal to the sum of (1) the unpaid amount of such Guaranteed Obligations, (2) accrued and unpaid interest on such Guaranteed Obligations (but only to the extent not prohibited by law) and (3) all other monetary
Guaranteed Obligations of the Company to the Holders and the Trustee. 
 Holdings and each Guarantor agrees that it shall not be
entitled to any right of subrogation in respect of any Guaranteed Obligations until payment in full of all Guaranteed Obligations and all obligations to which the Guaranteed Obligations are subordinated as provided in Article 12. Holdings and
each Guarantor further agrees that, as between it, on the one hand, and the Holders and the Trustee, on the other hand, (x) the maturity of the Guaranteed Obligations may be accelerated as provided in Article 6 for the purposes of
Holdings’ or such Guarantor’s Guarantee herein, notwithstanding any stay, injunction or other prohibition preventing such acceleration in respect of the Guaranteed Obligations, and (y) in the event of any declaration of acceleration
of such Guaranteed Obligations as provided in Article 6, such Guaranteed Obligations (whether or not due and payable) shall forthwith become due and payable by Holdings or such Guarantor for the purposes of this Section. 
 Holdings and each Guarantor also agrees to pay any and all costs and expenses (including reasonable attorneys’ fees and expenses)
incurred by the Trustee or any Holder in enforcing any rights under this Section. 
 SECTION 11.02. Limitation on
Liability. 
 Any term or provision of this Indenture to the contrary notwithstanding, the maximum aggregate amount of the
Obligations guaranteed hereunder by any Guarantor shall not exceed the maximum amount that can be hereby guaranteed without rendering this Indenture, as it relates to such Guarantor, voidable under applicable law relating to fraudulent conveyance or
fraudulent transfer or similar laws affecting the rights of creditors generally. 
 SECTION 11.03. Successors and
Assigns. 
 This Article 11 shall be binding upon Holdings and each Guarantor and its successors and assigns and shall
inure to the benefit of the successors and assigns of the Trustee and the Holders, and, in the event of any transfer or assignment of rights by any Holder or the Trustee, the rights and privileges conferred upon that party in this Indenture and in
the Notes shall automatically extend to, and be vested in, such transferee or assignee, all subject to the terms and conditions of this Indenture. 
 SECTION 11.04. No Waiver. 
 Neither a failure nor a delay on the part of
either the Trustee or the Holders in exercising any right, power or privilege under this Article 11 shall operate as a waiver thereof, nor shall a single or partial exercise thereof preclude any other or further exercise of any right, power or
privilege. The rights, remedies and benefits of the Trustee and the Holders herein expressly specified are cumulative and not exclusive of any other rights, remedies or benefits which either may have under this Article 11 at law, in equity, by
statute or otherwise. 
  

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 SECTION 11.05. Modification. 
 No modification, amendment or waiver of any provision of this Article 11, nor the consent to any departure by Holdings or any Guarantor
therefrom, shall in any event be effective unless the same shall be in writing and signed by the Trustee and then such waiver or consent shall be effective only in the specific instance and for the purpose for which given. No notice to, or demand
on, Holdings or any Guarantor in any case shall entitle such Guarantor to any other or further notice or demand in the same, similar or other circumstances. 
 SECTION 11.06. [Intentionally Omitted]. 
 SECTION 11.07. Release of
Guarantor. 
 Upon the sale (including any sale pursuant to any exercise of remedies by a holder of Senior Debt of the
Company or of any Guarantor) or other disposition (including by way of consolidation or merger) of a Guarantor or the sale or disposition of all or substantially all the assets of such Guarantor (in each case, other than a sale or disposition to the
Company or an Affiliate of the Company and, if in connection therewith, the Company provides an Officers’ Certificate to the Trustee to the effect that the Company will comply with its obligations under Section 4.10 hereof in respect of
such disposition), or upon designation of a Guarantor as an Unrestricted Subsidiary pursuant to the terms of this Indenture, such Guarantor shall be deemed released from all obligations under this Article 11 without any further action required
on the part of the Trustee or any Holder. If the Company exercises its Legal Defeasance option or its Covenant Defeasance option in accordance with the provisions of Article 8 hereof, or if its obligations under this Indenture are discharged in
accordance with Section 8.06 hereof, Holdings and each Guarantor shall be released from all obligations under this Article 11 without any further action required on the part of the Trustee or any Holder. At the request of the Company, the
Trustee shall execute and deliver an appropriate instrument evidencing the release of a Guarantor pursuant to this Section 11.07. 
 SECTION 11.08. Contribution. 
 Holdings and each Guarantor that makes a payment under its Guarantee shall be
entitled, upon payment in full of all Guaranteed Obligations, to contribution from Holdings and each Guarantor, as applicable, in an amount equal to Holdings’ or such Guarantor’s pro rata portion of such payment based on the
respective net assets of all the Guarantors at the time of such payment determined in accordance with GAAP (for purposes hereof, Holdings’ net assets shall be those of all its Consolidated Subsidiaries other than the Guarantors). 
  

 83 

 ARTICLE XII 
 SUBORDINATION OF GUARANTEES 
 SECTION 12.01. Agreement to
Subordinate. 
 Holdings and each Guarantor agrees, and each Holder by accepting a Note agrees, that the Indebtedness
evidenced by Holdings’ or such Guarantor’s Guarantee (as the case may be) is subordinated in right of payment, to the extent and in the manner provided in this Article 12, to the prior payment of all Senior Debt of Holdings or such
Guarantor (as applicable) and that the subordination is for the benefit of, and enforceable by, the holders of such Senior Debt. The Guaranteed Obligations of Holdings or a Guarantor (as applicable) shall in all respects rank pari passu with
all other Senior Subordinated Debt of Holdings or such Guarantor, and only Senior Debt of Holdings or such Guarantor (including Holdings’ or such Guarantor’s Guarantee of Senior Debt of the Company) shall rank senior to the Guaranteed
Obligations of Holdings or such Guarantor (as the case may be) in accordance with the provisions set forth herein. 
 SECTION
12.02. Liquidation, Dissolution, Bankruptcy. 
 Upon any payment or distribution of the assets of Holdings or any
Guarantor to creditors upon a total or partial liquidation or a total or partial dissolution of Holdings or such Guarantor (as the case may be) or in a bankruptcy, reorganization, insolvency, receivership or similar proceeding relating to Holdings
or such Guarantor (as the case may be) or its property: 
 (1) holders of Senior Debt of Holdings or such
Guarantor (as the case may be) shall be entitled to receive payment in full in cash of such Senior Debt before Holders shall be entitled to receive any payment pursuant to the Guarantee of Holdings or such Guarantor (as the case may be); and

 (2) until the Senior Debt of Holdings or any Guarantor is paid in full in cash, any payment or distribution
to which Holders would be entitled but for this Article 12 shall be made to holders of such Senior Debt as their interests may appear, except that Holders may receive shares of stock and any debt securities of Holdings or such Guarantor (as the
case may be) that are subordinated to such Senior Debt to at least the same extent as its Guarantee. 
 SECTION 12.03.
Default on Senior Debt of Guarantor. 
 Neither Holdings nor any Guarantor shall make any payment on its Guarantee or
purchase, redeem or otherwise retire or defease any Notes or other Guaranteed Obligations (collectively, “pay its Guarantee”) if either of the following (a “Payment Default”) occurs (1) any Designated Senior
Debt of Holdings or such Guarantor (as the case may be) is not paid in full in cash when due; or (2) any other default on Designated Senior Debt of Holdings or such Guarantor (as the case may be) occurs, and the maturity of such Designated
Senior Debt is accelerated in accordance with its terms; unless, in either case, the Payment Default has been cured or waived and any such acceleration has been rescinded or such Designated Senior Debt has been paid in full in cash; provided,
however, that Holdings or any Guarantor shall be entitled

  

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to pay its Guarantee without regard to the foregoing if Holdings or such Guarantor (as the case may be) and the Trustee receive written notice approving such payment from the Representative of
any Designated Senior Debt with respect to which the Payment Default has occurred and is continuing. During the continuance of any default (other than a Payment Default) with respect to any Designated Senior Debt of Holdings or such Guarantor (as
the case may be) pursuant to which the maturity thereof may be accelerated immediately without further notice (except such notice as may be required to effect such acceleration) or the expiration of any applicable grace periods, Holdings or such
Guarantor (as the case may be) shall not pay its Guarantee for a period (a “Payment Blockage Period”) commencing upon the receipt by the Trustee of (with a copy to Holdings or such Guarantor (as the case may be)) written notice (a
“Blockage Notice”) of such default from the Representative of such Designated Senior Debt specifying an election to effect a Payment Blockage Period and ending 179 days thereafter. The Payment Blockage Period shall end earlier
if such Payment Blockage Period is terminated (1) by written notice to the Trustee and Holdings or such Guarantor (as the case may be) from the Person or Persons who gave such Blockage Notice; (2) because the default giving rise to such
Blockage Notice is cured, waived or otherwise no longer continuing; or (3) because such Designated Senior Debt has been discharged or repaid in full in cash. Notwithstanding the provisions described in the immediately preceding two sentences
(but subject to the provisions contained in the first sentence of this Section), unless the holders of such Designated Senior Debt giving such Payment Notice or the Representative of such Designated Senior Debt shall have accelerated the maturity of
such Designated Senior Debt, Holdings or any Guarantor shall be entitled to resume payments pursuant to its Guarantee after termination of such Payment Blockage Period. Neither Holdings nor any Guarantor shall be subject to more than one Blockage
Period in any consecutive 360-day period, irrespective of the number of defaults with respect to Designated Senior Debt of Holdings or such Guarantor (as the case may be) during such period; provided, however, that if any Blockage
Notice within such 360-day period is given by, or on behalf, of any holders of Designated Senior Debt of Holdings or such Guarantor (as the case may be) (other than the Bank Indebtedness), the Representative of the Bank Indebtedness shall be
entitled to give another Blockage Notice within such period; provided further, however, that in no event shall the total number of days during which any Payment Blockage Period or Periods is in effect exceed 179 days in the
aggregate during any 360-day consecutive period, and there must be 181 days during any 360-day consecutive period during which no Payment Blockage Period is in effect. For purposes of this Section, no default or event of default which existed or was
continuing on the date of the commencement of any Payment Blockage Period with respect to the Designated Senior Debt of Holdings or such Guarantor (as the case may be) initiating such Payment Blockage Period shall be, or be made, the basis of the
commencement of a subsequent Payment Blockage Period by the Representative of such Designated Senior Debt, whether or not within a period of 360 consecutive days, unless such default or event of default shall have been cured or waived for a
period of not less than 90 consecutive days. 
 SECTION 12.04. Demand for Payment. 
 If a demand for payment is made on Holdings or a Guarantor pursuant to Article 11 hereof, the Trustee shall promptly notify the holders
of the Designated Senior Debt of Holdings or such Guarantor (as the case may be) (or their Representatives) of such demand. 
  

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 SECTION 12.05. When Distribution Must Be Paid Over. 
 If a distribution is made to Holders that, because of this Article 12, should not have been made to them, the Holders who receive the
distribution shall hold it in trust for holders of Senior Debt of Holdings or the applicable Guarantor (as the case may be) and pay it over to them or their Representatives as their interests may appear. If any Designated Senior Debt of Holdings or
a Guarantor is outstanding, Holdings or such Guarantor (as the case may be) shall not make a payment on its Guarantee until five Business Days after the Representatives of all the issuers of Designated Senior Debt of Holdings or such Guarantor (as
the case may be) receive notice of such acceleration and, thereafter, shall be entitled to pay the Notes only if this Article 12 otherwise permits payment at that time. 
 SECTION 12.06. Subrogation. 
 After all Senior Debt of Holdings or a Guarantor is paid in full, and until the Notes are paid in full, Holders shall be subrogated to the rights of holders of such Senior Debt to receive distributions
applicable to Senior Debt of Holdings or such Guarantor (as the case may be). A distribution made under this Article 12 to holders of such Senior Debt which otherwise would have been made to Holders is not, as between Holdings or the relevant
Guarantor and Holders, a payment by Holdings or such Guarantor on such Senior Debt. 
 SECTION 12.07. Relative Rights.

 This Article 12 defines the relative rights of Holders and holders of Senior Debt of Holdings or a Guarantor. Nothing in
this Indenture shall: 
 (1) impair, as between Holdings or a Guarantor and Holders (as the case may be), the
obligation of Holdings or such Guarantor (as the case may be), which is absolute and unconditional, to pay its Guarantee to the extent set forth in Article 11; or 
 (2) prevent the Trustee or any Holder from exercising its available remedies upon a default by Holdings or such Guarantor
(as the case may be) under its Guarantee, subject to the rights of holders of Senior Debt of Holdings or such Guarantor to receive distributions otherwise payable to Holders. 
 SECTION 12.08. Subordination May Not Be Impaired by Company. 
 No right of any holder of Senior Debt of Holdings or any Guarantor to enforce the subordination of the Guarantee of Holdings or such
Guarantor (as the case may be) shall be impaired by any act or failure to act by Holdings or such Guarantor (as the case may be) or by its failure to comply with this Indenture. 
 SECTION 12.09. Rights of Trustee and Paying Agent. 
 Notwithstanding anything in this Article 12, the Trustee or Paying Agent shall continue to make payments on any Guarantee, and shall not be charged with knowledge of the existence of facts that would
prohibit the making of any payments to or by the Trustee, unless and until, not less than two Business Days prior to the date of such payment, a Responsible

  

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Officer of the Trustee receives written notice satisfactory to it that such payments are prohibited by this Article 12. The Company, Holdings or the relevant Guarantor, a Representative or a
holder of Senior Debt of Holdings or such Guarantor (as the case may be) shall be entitled to give the notice; provided, however, that, if an issue of Senior Debt of Holdings or any Guarantor (as the case may be) has a Representative,
only the Representative shall be entitled to give the notice. Prior to the receipt of any such written notice, the Trustee shall be entitled in all respects conclusively to presume that no such fact exists. Unless the Trustee shall have received the
notice provided for in the preceding sentence, the Trustee shall have full power and authority to receive such payment and to apply the same to the purpose for which it was received and shall not be affected by any notice to the contrary which may
be received by it on or after such date. The foregoing shall not apply to any Affiliate of the Company acting as Paying Agent. 
 The Trustee, in its individual or any other capacity, shall be entitled to hold Senior Debt of Holdings or any Guarantor with the same rights it would have if it were not the Trustee. The Registrar and the Paying Agent may do the same with
like rights. The Trustee shall be entitled to all the rights set forth in this Article 12 with respect to any Senior Debt of Holdings or any Guarantor which may at any time be held by it, to the same extent as any other holder of such Senior
Debt; and nothing in Article 7 shall deprive the Trustee of any of its rights as such holder. Notwithstanding anything in this Article 12 to the contrary, all amounts owed to the Trustee (including amounts owed pursuant to
Section 7.07 hereof) in each of its capacities hereunder shall not be subordinated to any Senior Debt of Holdings or a Guarantor or otherwise. 
 SECTION 12.10. Distribution or Notice to Representative. 
 Whenever any
Person is to make a distribution or give a notice to holders of Senior Debt of Holdings or any Guarantor, such Person shall be entitled to make such distribution or give such notice to their Representative (if any). 
 SECTION 12.11. Article 12 Not to Prevent Events of Default or Limit Right to Demand Payment. 
 The failure to make a payment pursuant to a Guarantee by reason of any provision in this Article 12 shall not be construed as
preventing the occurrence of a Default. Nothing in this Article 12 shall have any effect on the right of the Holders or the Trustee to make a demand for payment on Holdings or any Guarantor pursuant to its Guarantee. 
 SECTION 12.12. Trustee Entitled to Rely. 
 Upon any payment or distribution pursuant to this Article 12, the Trustee and the Holders shall be entitled to rely (1) upon any order or decree of a court of competent jurisdiction in which any
proceedings of the nature referred to in Section 12.02 are pending, (2) upon a certificate of the liquidating trustee or agent or other Person making such payment or distribution to the Trustee or to the Holders or (3) upon the
Representatives for the holders of Senior Debt of Holdings or any Guarantor for the purpose of ascertaining the Persons entitled to participate in such payment or distribution, the holders of such Senior Debt and other indebtedness of Holdings or
such Guarantor (as the case may be), the amount thereof or payable thereon, the amount or amounts paid or distributed thereon and all other facts pertinent thereto or to this

  

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Article 12. In the event that the Trustee determines, in good faith, that evidence is required with respect to the right of any Person as a holder of Senior Debt of Holdings or any Guarantor
to participate in any payment or distribution pursuant to this Article 12, the Trustee shall be entitled to request such Person to furnish evidence to the reasonable satisfaction of the Trustee as to the amount of Senior Debt of Holdings or
such Guarantor (as the case may be) held by such Person, the extent to which such Person is entitled to participate in such payment or distribution and other facts pertinent to the rights of such Person under this Article 12, and, if such
evidence is not furnished, the Trustee shall be entitled to defer any payment to such Person pending judicial determination as to the right of such Person to receive such payment. The provisions of Sections 7.01 and 7.02 shall be applicable to all
actions or omissions of actions by the Trustee pursuant to this Article 12. 
 SECTION 12.13. Trustee to Effectuate
Subordination. 
 Each Holder, by accepting a Note, authorizes and directs the Trustee on its behalf to execute such
documentation and to take such action as may be necessary or appropriate to acknowledge or effectuate the subordination between the Holders and the holders of Senior Debt of Holdings or any Guarantor as provided in this Article 12 and appoints
the Trustee as attorney-in-fact for any and all such purposes. 
 SECTION 12.14. Trustee Not Fiduciary for Holders of Senior
Debt of Guarantor. 
 The Trustee shall not be deemed to owe any fiduciary duty to the holders of Senior Debt of Holdings or
any Guarantor and shall not be liable to any such holders if it shall mistakenly pay over or distribute to Holders or the Company or any other Person, money or assets to which any holders of such Senior Debt shall be entitled by virtue of this
Article 12 or otherwise. 
 SECTION 12.15. Reliance by Holders of Senior Debt of Holdings or Guarantors on Subordination
Provisions. 
 Each Holder, by accepting a Note, acknowledges and agrees that the foregoing subordination provisions are,
and are intended to be, an inducement and a consideration to each holder of any Senior Debt of Holdings or any Guarantor, whether such Senior Debt was created or acquired before or after the issuance of the Notes, to acquire and continue to hold, or
to continue to hold, such Senior Debt, and such holder of Senior Debt shall be deemed conclusively to have relied on such subordination provisions in acquiring and continuing to hold, or in continuing to hold, such Senior Debt. 
 ARTICLE XIII 
 MISCELLANEOUS 
 SECTION 13.01. Trust Indenture Act Controls. 
 If any provision of this Indenture limits, qualifies or conflicts with the duties imposed by TIA § 318(c), the imposed duties shall
control. 
  

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 SECTION 13.02. Notices. 
 Any notice or communication by the Company, Holdings, any Guarantor or the Trustee to the others is duly given if in writing and delivered
in Person or mailed by first class mail (registered or certified, return receipt requested), telex, telecopier or overnight air courier guaranteeing next day delivery, to the others’ address: 
 If to the Company, Holdings and/or any Guarantor: 
 TransDigm Inc. 
 1301 East 9th Street, Suite 3710 
 Cleveland, Ohio 44114 
 Facsimile No.: (216) 706-2837 
 Attention: Gregory Rufus, 
 Executive Vice President and Chief Financial Officer 
 Latham & Watkins LLP 
 885 Third Avenue 
 New York, NY 10022 
 Facsimile No.: (212) 751-4864 
 Attention: Steven Della Rocca, Esq. 
 If to the Trustee: 
 The Bank of New York Mellon Trust Company, N.A. 
 2 N. LaSalle Street, Suite 1020 
 Chicago, IL 60602 
 Facsimile No.: 312-827-8542 
 Attention: Anabella Hernandez 
 The Company, Holdings, any Guarantor or the Trustee, by notice to the others, may designate additional or different addresses for subsequent
notices or communications. 
 All notices and communications (other than those sent to Holders or the Trustee) shall be deemed
to have been duly given: at the time delivered by hand, if personally delivered; five Business Days after being deposited in the mail, postage prepaid, if mailed; when receipt acknowledged, if telecopied; and the next Business Day after timely
delivery to the courier, if sent by overnight air courier guaranteeing next day delivery. All notices and communications sent to the Trustee shall be deemed to have been duly given when actually received. 
 Any notice or communication to a Holder shall be mailed by first class mail, certified or registered, return receipt requested, or by
overnight air courier guaranteeing next day delivery to its address shown on the register kept by the Registrar. Any notice or communication shall also be so mailed to any Person described in TIA § 313(c), to the extent required by
the TIA. Failure to mail a notice or communication to a Holder, or any defect in it, shall not affect its sufficiency with respect to other Holders. 
  

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 The Trustee agrees to accept and act upon instructions or directions pursuant to this
Indenture sent by unsecured e-mail, facsimile transmission or other similar unsecured electronic methods; provided, however, that (a) the party providing such written instructions, subsequent to such transmission of written instructions,
shall provide the originally executed instructions or directions to the Trustee in a timely manner and (b) such originally executed instructions or directions shall be signed by an authorized representative of the party providing such
instructions or directions. If the party elects to give the Trustee e-mail or facsimile instructions (or instructions by a similar electronic method), and the Trustee, in its discretion, elects to act upon such instructions, the Trustee’s
understanding of such instructions shall be deemed controlling. The Trustee shall not be liable for any losses, costs or expenses arising directly or indirectly from the Trustee’s reliance upon, and compliance with, such instructions
notwithstanding if such instructions conflict or are inconsistent with a subsequent written instruction. The party providing electronic instructions agrees to assume all risks arising out of the use of such electronic methods to submit instructions
and directions to the Trustee, including without limitation, the risk of the Trustee acting on unauthorized instructions and the risk of interception and misuse by third parties. 
 If a notice or communication is mailed in the manner provided above within the time prescribed, it is duly given, whether or not the
addressee receives it. 
 If the Company mails a notice or communication to Holders, it shall mail a copy to the Trustee, each
Paying Agent and the Registrar at the same time. 
 SECTION 13.03. Communication by Holders of Notes with Other Holders of
Notes. 
 Holders may communicate pursuant to TIA § 312(b) with other Holders with respect to their rights under
this Indenture or the Notes. The Company, the Trustee, the Registrar and anyone else shall have the protection of TIA § 312(c). 
 SECTION 13.04. Certificate and Opinion as to Conditions Precedent. 
 Upon any request or application by the
Company to the Trustee to take any action under this Indenture, the Company shall furnish to the Trustee: 
 (a)
an Officers’ Certificate (which shall include the statements set forth in Section 13.05 hereof) stating that, in the opinion of the signers, all conditions precedent and covenants, if any, provided for in this Indenture relating to the
proposed action have been complied with; and 
 (b) an Opinion of Counsel (which shall include the statements
set forth in Section 13.05 hereof) stating that, in the opinion of such counsel, all such conditions precedent and covenants have been complied with. 
  

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 SECTION 13.05. Statements Required in Certificate or Opinion. 
 Each certificate or opinion with respect to compliance with a condition or covenant provided for in this Indenture (other than a certificate
provided pursuant to TIA § 314(a)(4)) shall comply with the provisions of TIA § 314(e) and shall include: 
 (a) a statement that the Person making such certificate or opinion has read such covenant or condition; 
 (b) a brief statement as to the nature and scope of the examination or investigation upon which the statements or opinions contained in such certificate or opinion are based; 
 (c) a statement that, in the opinion of such Person, he or she has, or they have made, such examination or investigation as
is necessary to enable him or her to express an informed opinion as to whether or not such covenant or condition has been satisfied; and 
 (d) a statement as to whether or not, in the opinion of such Person, such condition or covenant has been satisfied. 
 SECTION 13.06. Rules by Trustee and Agents. 
 The Trustee may make
reasonable rules for action by or at a meeting of Holders. The Registrar or Paying Agent may make reasonable rules and set reasonable requirements for its functions. 
 SECTION 13.07. No Personal Liability of Directors, Officers, Employees and Stockholders. 
 No past, present or future director, officer, employee, incorporator or stockholder of Holdings, the Company or any Subsidiary of the
Company (other than the Company, Holdings or any Subsidiary of the Company that is a Guarantor), as such, shall have any liability for any obligations of the Company, Holdings or any Subsidiary of the Company under the Notes, the Guarantees, this
Indenture or for any claim based on, in respect of, or by reason of, such obligations or their creation. Each Holder, by accepting a Note, waives and releases all such liability. The waiver and release are part of the consideration for issuance of
the Notes. 
 SECTION 13.08. Governing Law. 
 THE INTERNAL LAW OF THE STATE OF NEW YORK SHALL GOVERN AND BE USED TO CONSTRUE THIS INDENTURE, THE NOTES AND THE GUARANTEES WITHOUT GIVING
EFFECT TO APPLICABLE PRINCIPLES OF CONFLICTS OF LAW TO THE EXTENT THAT THE APPLICATION OF THE LAWS OF ANOTHER JURISDICTION WOULD BE REQUIRED THEREBY. 
  

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 SECTION 13.09. No Adverse Interpretation of Other Agreements. 
 This Indenture may not be used to interpret any other indenture, loan or debt agreement of the Company, its Subsidiaries, Holdings or of any
other Person. Any such indenture, loan or debt agreement may not be used to interpret this Indenture. 
 SECTION 13.10.
Successors. 
 All agreements of the Company, Holdings and the Guarantors in this Indenture and the Notes shall bind
their respective successors. All agreements of the Trustee in this Indenture shall bind its successors. 
 SECTION 13.11.
Severability. 
 In case any provision in this Indenture or in the Notes shall be invalid, illegal or unenforceable, the
validity, legality and enforceability of the remaining provisions shall not in any way be affected or impaired thereby. 
 SECTION 13.12. Counterpart Originals. 
 The parties may sign any number of copies of this Indenture. Each
signed copy shall be an original, but all of them together represent the same agreement. 
 SECTION 13.13. Table of Contents,
Headings, etc. 
 The Table of Contents, Cross-Reference Table and Headings of the Articles and Sections of this Indenture
have been inserted for convenience of reference only, are not to be considered a part of this Indenture and shall in no way modify or restrict any of the terms or provisions hereof. 
 SECTION 13.14. Waiver of Trial by Jury. 
 EACH PARTY HERETO, AND EACH HOLDER, BY ITS ACCEPTANCE OF A NOTE, HEREBY WAIVES, TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ANY RIGHT IT MAY HAVE TO A TRIAL BY JURY IN RESPECT OF ANY
LITIGATION DIRECTLY OR INDIRECTLY ARISING OUT OF, UNDER OR IN CONNECTION WITH THIS INDENTURE. 
  

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 IN WITNESS WHEREOF, the parties have caused this Indenture to be duly executed as of the
date first written above. 
  

					
	TRANSDIGM INC.,
		
	by	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	 Executive Vice President, Chief
 Financial Officer and Assistant
 Secretary

	
	TRANSDIGM GROUP INCORPORATED,
		
	by	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	 Executive Vice President, Chief
 Financial Officer and Assistant
 Secretary

	
	AVIONIC INSTRUMENTS INC.,
		
	by	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Assistant Secretary and Treasurer
	
	SKURKA AEROSPACE INC.,
		
	by	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Assistant Secretary and Treasurer
	
	AEROCONTROLEX GROUP, INC.,
		
	by	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Secretary and Treasurer

  

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	CHAMPION AEROSPACE LLC,
		
	by	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Assistant Secretary and Treasurer
	
	MARATHONNORCO AEROSPACE, INC.,
		
	by	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Secretary and Treasurer
	
	AVIATION TECHNOLOGIES, INC.,
		
	by	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Secretary and Treasurer
	
	ADAMS RITE AEROSPACE, INC.,
		
	by	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Assistant Secretary and Treasurer
	
	AVTECH CORPORATION,
		
	by	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Secretary and Treasurer
	
	TRANSICOIL LLC,
		
	by	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Secretary and Treasurer

  

 94 

					
	
	CDA INTERCORP LLC,
		
	by	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Secretary and Treasurer
	
	MALAYSIAN AEROSPACE SERVICES, INC.,
		
	by	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Secretary and Treasurer
	
	BRUCE AEROSPACE, INC.,
		
	by	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Secretary and Treasurer
	
	CEF INDUSTRIES, LLC,
		
	by	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Secretary and Treasurer
	
	AIRCRAFT PARTS CORPORATION,
		
	by	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Secretary and Treasurer
	
	ACME AEROSPACE, INC.,
		
	by	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Secretary and Treasurer

  

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	 THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A.,
 as Trustee

		
	by	 	 /s/ Anabella Hernandez

		 	Name:	 	Anabella Hernandez
		 	Title:	 	Senior Associate

  

 96 

 PROVISIONS RELATING TO INITIAL SECURITIES, 
 PRIVATE EXCHANGE SECURITIES 
 AND EXCHANGE SECURITIES 
 1. Definitions 
 1. Definitions 
 For the purposes of this Appendix the following terms shall have the meanings indicated below: 
 “Definitive
Note” means a certificated Initial Note or Exchange Note or Private Exchange Note bearing, if required, the restricted securities legend set forth in Section 2.3(e). 
 “Depository” means The Depository Trust Company, its nominees and their respective successors. 
 “Distribution Compliance Period”, with respect to any Notes, means the period of 40 consecutive days beginning on and
including the later of (i) the day on which such Notes are first offered to Persons other than distributors (as defined in Regulation S under the Securities Act) in reliance on Regulation S and (ii) the issue date with respect to such
Notes. 
 “Exchange Notes” means (1) the 7 3/4% Senior Subordinated Notes due 2014 issued pursuant to the
Indenture in connection with the Registered Exchange Offer pursuant to the Registration Rights Agreement and (2) Additional Notes, if any, issued pursuant to a registration statement filed with the SEC under the Securities Act.

 “Initial Purchasers” means (1) with respect to the Initial Notes issued on the Issue Date,
Credit Suisse Securities (USA) LLC, Barclays Capital Inc. and UBS Securities LLC and (2) with respect to each issuance of Additional Notes, the Persons purchasing or underwriting such Additional Notes under the related Purchase Agreement.

 “Initial Notes” means (1) $425,000,000 aggregate principal amount of 7 3/4% Senior Subordinated Notes due 2014 issued on the
Issue Date and (2) Additional Notes, if any, issued in a transaction exempt from the registration requirements of the Securities Act. 
 “Private Exchange” means the offer by the Company, pursuant to the Registration Rights Agreement, to the Initial Purchasers to issue and deliver to each Initial Purchaser, in exchange for
the Initial Notes held by the Initial Purchaser as part of its initial distribution, a like aggregate principal amount of Private Exchange Notes. 
 “Private Exchange Notes” means any 7 3/4% Senior Subordinated Notes due 2014 issued in connection with a Private Exchange. 
 “Purchase Agreement” means (1) with respect to the Initial Notes issued on the Issue Date, the Purchase Agreement dated September 30, 2009, among the Company, Holdings, the
Guarantors and Credit Suisse Securities (USA) LLC, as representative of the Initial Purchasers, and (2) with respect to each issuance of Additional Notes, the purchase agreement or underwriting agreement among the Company and the Persons
purchasing or underwriting such Additional Notes. 
  

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 “QIB” means a “qualified institutional buyer” as defined in
Rule 144A. 
 “Registered Exchange Offer” means the offer by the Company, pursuant to the Registration
Rights Agreement, to certain Holders of Initial Notes, to issue and deliver to such Holders, in exchange for the Initial Notes, a like aggregate principal amount of Exchange Notes registered under the Securities Act. 
 “Registration Rights Agreement” means (1) with respect to the Initial Notes issued on the Issue Date, the Registration
Rights Agreement dated October 6, 2009, among the Company, Holdings, the Guarantors and Credit Suisse Securities (USA) LLC, as representative for the Initial Purchasers, and (2) with respect to each issuance of Additional Notes issued in a
transaction exempt from the registration requirements of the Securities Act, the registration rights agreement, if any, among the Company, Holdings, the Guarantors and the Persons purchasing such Additional Notes under the related Purchase
Agreement. 
 “Notes Custodian” means the Trustee, as custodian with respect to the Notes in global form, or
any successor entity thereto. 
 “Notes” means the Initial Notes, the Exchange Notes and the Private Exchange
Notes, treated as a single class. 
 “Securities Custodian” means the custodian with respect to a Global Note
(as appointed by the Depository), or any successor Person thereto and shall initially be the Trustee. 
 “Shelf
Registration Statement” means the registration statement issued by the Company in connection with the offer and sale of Initial Notes or Private Exchange Notes pursuant to a Registration Rights Agreement. 
 “Transfer Restricted Notes” means Notes that bear or are required to bear the legend set forth in
Section 2.3(e) hereof. 
 1.2 Other Definitions 
  

			
	 Term
	  	 Defined in
Section:

	 “Agent Members”
	  	2.1(b)
	 “Global Notes
	  	2.1(a)
	 “Permanent Regulation S Global Note”
	  	2.1(a)
	 “Regulation S”
	  	2.1(a)
	 “Regulation S Global Notes
	  	2.1(a)
	 “Rule 144A”
	  	2.1(a)
	 “Rule 144A Global Note”
	  	2.1(a)
	 “Temporary Regulation S Global Note”
	  	2.1(a)

  

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 2. The Notes. 
 2.1(a) Form and Dating. The Initial Notes will be offered and sold by the Company pursuant to a Purchase Agreement. The Initial Notes
will be resold initially only to (i) QIBs in reliance on Rule 144A under the Securities Act (“Rule 144A”) and (ii) Persons other than U.S. Persons (as defined in Regulation S) in reliance on Regulation S
under the Securities Act (“Regulation S”). Initial Notes may thereafter be transferred to, among others, QIBs and purchasers in reliance on Regulation S, in each case, subject to the restrictions on transfer set forth herein.
Initial Notes initially resold pursuant to Rule 144A shall be issued initially in the form of one or more permanent global Notes in definitive, fully registered form (collectively, the “Rule 144A Global Note”) and Initial
Notes initially resold pursuant to Regulation S shall be issued initially in the form of one or more temporary global notes in fully registered form (collectively, the “Temporary Regulation S Global Note”), in each case without
interest coupons and with the global notes legend and restricted notes legend set forth in Exhibit A hereto, which shall be deposited on behalf of the purchasers of the Initial Notes represented thereby with the Notes Custodian, and registered
in the name of the Depository or a nominee of the Depository, duly executed by the Company and authenticated by the Trustee as provided in this Indenture. Except as set forth in this Section 2.1(a), beneficial ownership interests in the
Temporary Regulation S Global Note (x) will not be exchangeable for interests in the Rule 144A Global Note, a permanent global note (the “Permanent Regulation S Global Note” and, together with the Temporary
Regulation S Global Notes, the “Regulation S Global Notes”), or any other Note prior to the expiration of the Distribution Compliance Period and (y) after the expiration of the Distribution Compliance Period, may be
exchanged for interests in a Rule 144A Global Note or the Permanent Regulation S Global Note only upon certification that beneficial ownership interests in such Temporary Regulation S Global Note are owned either by non-U.S. persons or U.S.
persons who purchased such interests in a transaction that did not require registration under the Securities Act. 
 Beneficial
interests in Temporary Regulation S Global Notes may be exchanged for interests in Rule 144A Global Notes if (1) such exchange occurs in connection with a transfer of Securities in compliance with Rule 144A, and (2) the
transferor of the beneficial interest in the Temporary Regulation S Global Note first delivers to the Trustee a written certificate (in a form satisfactory to the Trustee) to the effect that the beneficial interest in the Temporary Regulation S
Global Note is being transferred to a Person (a) who the transferor reasonably believes to be a QIB, (b) purchasing for its own account or the account of a QIB in a transaction meeting the requirements of Rule 144A, and (c) in
accordance with all applicable securities laws of the States of the United States and other jurisdictions. 
 Beneficial
interest in a Rule 144A Global Note may be transferred to a Person who takes delivery in the form of an interest in a Regulation S Global Note, whether before or after the expiration of the Distribution Compliance Period, only if the
transferor first delivers to the Trustee a written certificate (in the form provided n the Indenture) to the effect that such transfer is being made in accordance with Rule 903 or 904 of Regulation S or Rule 144 (if applicable).

 The Rule 144A Global Note, the Temporary Regulation S Global Note and the Permanent Regulation S Global Note
are collectively referred to herein as “Global Notes”. The

  

 99 

 
aggregate principal amount of the Global Notes may from time to time be increased or decreased by adjustments made on the records of the Trustee and the Depository and the Notes Custodian as
hereinafter provided. 
 (b) Book-Entry Provisions. This Section 2.1(b) shall apply only to a Global Note
deposited with or on behalf of the Depository. 
 The Company shall execute and the Trustee shall, in accordance with this
Section 2.1(b), authenticate and deliver initially one or more Global Notes that (a) shall be registered in the name of the Depository for such Global Note or Global Notes or the nominee of such Depository and (b) shall be delivered
by the Trustee to such Depository or pursuant to such Depository’s instructions or held by the Notes Custodian. 
 Members
of, or participants in, the Depository (“Agent Members”) shall have no rights under this Indenture with respect to any Global Note held on their behalf by the Depository or by the Notes Custodian or under such Global Note, and the
Company, the Trustee and any agent of the Company or the Trustee shall be entitled to treat the Depository as the absolute owner of such Global Note for all purposes whatsoever. Notwithstanding the foregoing, nothing herein shall prevent the
Company, the Trustee or any agent of the Company or the Trustee from giving effect to any written certification, proxy or other authorization furnished by the Depository or impair, as between the Depository and its Agent Members, the operation of
customary practices of such Depository governing the exercise of the rights of a holder of a beneficial interest in any Global Note. 
 (c) Certificated Notes. Except as provided in this Section 2.1 or Sections 2.3 or 2.4, owners of beneficial interests in Global Notes shall not be entitled to receive physical delivery of Definitive Notes. 
 2.2 Authentication. The Trustee shall authenticate and deliver: (1) on the Issue Date, an aggregate
principal amount of $425.0 million 7 3/4%
Senior Subordinated Notes due 2014; and (2) any Additional Notes for an original issue in an aggregate principal amount specified in the written order of the Company pursuant to Section 2.02 of the Indenture and (3) Exchange Notes or
Private Exchange Notes for issue only in a Registered Exchange Offer or a Private Exchange, respectively, pursuant to a Registration Rights Agreement, for a like principal amount of Initial Notes, in each case upon a written order of the Company
signed by two Officers. Such order shall specify the amount of the Notes to be authenticated and the date on which the original issue of Notes is to be authenticated and, in the case of any issuance of Additional Notes pursuant to Section 2.14
of the Indenture, shall certify that such issuance is in compliance with Section 4.09 of the Indenture. 
 2.3 Transfer and Exchange. (a) Transfer and Exchange of Definitive Notes. When Definitive Notes are presented to a Registrar with a request: 
 (x) to register the transfer of such Definitive Notes; or 
 (y) to exchange such Definitive Notes for an equal principal amount of Definitive Notes of other authorized denominations,

  

 100 

 the Registrar shall register the transfer or make the exchange as requested if its
reasonable requirements for such transaction are met; provided, however, that the Definitive Notes surrendered for transfer or exchange: 
 (i) shall be duly endorsed or accompanied by a written instrument of transfer in form reasonably satisfactory to the Company and the Registrar, duly executed by the Holder thereof or its attorney
duly authorized in writing; and 
 (ii) if such Definitive Notes are required to bear a restricted
securities legend, they are being transferred or exchanged pursuant to an effective registration statement under the Securities Act, pursuant to Section 2.3(b) or pursuant to clause (A), (B) or (C) below, and are accompanied by
the following additional information and documents, as applicable: 
 (A) if such Definitive Notes are
being delivered to the Registrar by a Holder for registration in the name of such Holder, without transfer, a certification from such Holder to that effect; or 
 (B) if such Definitive Notes are being transferred to the Company, a certification to that effect; or 
 (C) if such Definitive Notes are being transferred (x) pursuant to an exemption from registration in accordance
with Rule 144A, Regulation S or Rule 144 under the Securities Act; or (y) in reliance upon another exemption from the requirements of the Securities Act: (x) a certification to that effect (in the form set forth on the reverse of
the Note) and (y) if the Company so requests, an opinion of counsel or other evidence reasonably satisfactory to it as to the compliance with the restrictions set forth in the legend set forth in Section 2.3(e)(i). 
 (b) Restrictions on Transfer of a Definitive Note for a Beneficial Interest in a Global Security. A Definitive Note may not be
exchanged for a beneficial interest in a Rule 144A Global Security or a Permanent Regulation S Global Note except upon satisfaction of the requirements set forth below. Upon receipt by the Trustee of a Definitive Note, duly endorsed or
accompanied by appropriate instruments of transfer, in form satisfactory to the Trustee, together with: 
 (i) certification, in the form set forth on the reverse of the Note, that such Definitive Note is either (A) being transferred to a QIB in accordance with Rule 144A or (B) is being transferred after expiration of the
Distribution Compliance Period by a Person who initially purchased such Note in reliance on Regulation S to a buyer who elects to hold its interest in such Note in the form of a beneficial interest in the Permanent Regulation S Global Note; and

 (ii) written instructions directing the Trustee to make, or to direct the Notes Custodian to make, an
adjustment on its books and records with respect to such Rule 144A Global Note (in the case of a transfer pursuant to clause (b)(i)(A)) or Permanent Regulation S Note (in the case of a transfer pursuant to clause (b)(i)(B)) to

  

 101 

 
reflect an increase in the aggregate principal amount of the Notes represented by the Rule 144A Global Note or Permanent Regulation S Global Note, as applicable, such instructions to
contain information regarding the Depository account to be credited with such increase, 
 then the Trustee shall cancel such Definitive Note
and cause, or direct the Notes Custodian to cause, in accordance with the standing instructions and procedures existing between the Depository and the Notes Custodian, the aggregate principal amount of Notes represented by the Rule 144A Global
Note or Permanent Regulation S Global Note, as applicable, to be increased by the aggregate principal amount of the Definitive Note to be exchanged and shall credit or cause to be credited to the account of the Person specified in such instructions
a beneficial interest in the Rule 144A Global Note or Permanent Regulation S Global Note, as applicable, equal to the principal amount of the Definitive Note so canceled. If no Rule 144A Global Notes or Permanent Regulation S Global
Notes, as applicable, are then outstanding, the Company shall issue, and the Trustee shall authenticate, upon written order of the Company in the form of an Officers’ Certificate, a new Rule 144A Global Note or Permanent Regulation S
Global Note, as applicable, in the appropriate principal amount. 
 (c) Transfer and Exchange of Global Notes.
(i) The transfer and exchange of Global Notes or beneficial interests therein shall be effected through the Depository, in accordance with this Indenture (including applicable restrictions on transfer set forth herein, if any) and the
procedures of the Depository therefor. A transferor of a beneficial interest in a Global Note shall deliver to the Registrar a written order given in accordance with the Depository’s procedures containing information regarding the participant
account of the Depository to be credited with a beneficial interest in the Global Note. The Registrar shall, in accordance with such instructions, instruct the Depository to credit to the account of the Person specified in such instructions a
beneficial interest in the Global Note and to debit the account of the Person making the transfer the beneficial interest in the Global Note being transferred. 
 (ii) If the proposed transfer is a transfer of a beneficial interest in one Global Note to a beneficial interest in
another Global Note, the Registrar shall reflect on its books and records the date and an increase in the principal amount of the Global Note to which such interest is being transferred in an amount equal to the principal amount of the interest to
be so transferred, and the Registrar shall reflect on its books and records the date and a corresponding decrease in the principal amount of the Global Note from which such interest is being transferred. 
 (iii) Notwithstanding any other provisions of this Appendix (other than the provisions set forth in Section 2.4),
a Global Note may not be transferred as a whole except by the Depository to a nominee of the Depository or by a nominee of the Depository to the Depository or another nominee of the Depository or by the Depository or any such nominee to a successor
Depository or a nominee of such successor Depository. 
 (iv) In the event that a Global Note is exchanged
for Definitive Notes pursuant to Section 2.4 of this Appendix prior to the consummation of a Registered Exchange Offer or the effectiveness of a Shelf Registration Statement with respect to such Notes, such

  

 102 

 
Notes may be exchanged only in accordance with such procedures as are substantially consistent with the provisions of this Section 2.3 (including the certification requirements set forth on
the reverse of the Initial Notes intended to ensure that such transfers comply with Rule 144A or Regulation S, as the case may be) and such other procedures as may from time to time be adopted by the Company. 
 (d) Restrictions on Transfer of Temporary Regulation S Global Notes. During the Distribution Compliance Period, beneficial
ownership interests in Temporary Regulation S Global Notes may be sold, pledged or transferred only (i) to the Company, (ii) in an offshore transaction in accordance with Regulation S (other than a transaction resulting in an exchange
for interest in a Permanent Regulation S Global Note) or (iii) pursuant to an effective registration statement under the Act, in each case in accordance with any applicable securities laws of any state of the United States.

 (e) Legend. 
 (i) Except as permitted by the following paragraphs (ii), (iii) and (iv), each Note certificate evidencing the Global Notes (and all Notes issued in exchange therefor or in substitution
thereof) shall bear a legend in substantially the following form: 
 THIS NOTE (OR ITS PREDECESSOR) WAS
ORIGINALLY ISSUED IN A TRANSACTION EXEMPT FROM REGISTRATION UNDER THE UNITED STATES SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND THIS NOTE MAY NOT BE OFFERED, SOLD OR OTHERWISE TRANSFERRED IN THE ABSENCE OF SUCH
REGISTRATION OR AN APPLICABLE EXEMPTION THEREFROM. EACH PURCHASER OF THIS NOTE IS HEREBY NOTIFIED THAT THE SELLER OF THIS NOTE MAY BE RELYING ON THE EXEMPTION FROM THE PROVISIONS OF SECTION 5 OF THE SECURITIES ACT PROVIDED BY
RULE 144A THEREUNDER. 
 THE HOLDER OF THIS NOTE AGREES FOR THE BENEFIT OF THE COMPANY THAT (A) THIS
NOTE MAY BE OFFERED, RESOLD, PLEDGED OR OTHERWISE TRANSFERRED, ONLY (I) TO THE COMPANY, (II) IN THE UNITED STATES TO A PERSON WHOM THE SELLER REASONABLY BELIEVES IS A QUALIFIED INSTITUTIONAL BUYER (AS DEFINED IN RULE 144A UNDER
THE SECURITIES ACT) IN A TRANSACTION MEETING THE REQUIREMENTS OF RULE 144A, (III) OUTSIDE THE UNITED STATES IN AN OFFSHORE TRANSACTION IN ACCORDANCE WITH RULE 904 UNDER THE SECURITIES ACT, (IV) PURSUANT TO EXEMPTION FROM
REGISTRATION UNDER THE SECURITIES ACT PROVIDED BY RULE 144 THEREUNDER (IF AVAILABLE), (V) PURSUANT TO ANOTHER AVAILABLE EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OR (VI) PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER
THE SECURITIES ACT, IN EACH OF CASES (I) THROUGH (VI) IN ACCORDANCE WITH ANY APPLICABLE SECURITIES LAWS OF ANY

  

 103 

 
STATE OF THE UNITED STATES, AND (B) THE HOLDER WILL, AND EACH SUBSEQUENT HOLDER IS REQUIRED TO, NOTIFY ANY PURCHASER OF THIS NOTE FROM IT OF THE RESALE RESTRICTIONS REFERRED TO IN
(A) ABOVE. 
 Each Definitive Note will also bear the following additional legend: 
 IN CONNECTION WITH ANY TRANSFER, THE HOLDER WILL DELIVER TO THE REGISTRAR AND TRANSFER AGENT SUCH CERTIFICATES AND OTHER
INFORMATION AS SUCH TRANSFER AGENT MAY REASONABLY REQUIRE TO CONFIRM THAT THE TRANSFER COMPLIES WITH THE FOREGOING RESTRICTIONS. 
 (ii) Upon any sale or transfer of a Transfer Restricted Note (including any Transfer Restricted Note represented by a Global Note) pursuant to Rule 144 under the Securities Act, the Registrar shall
permit the transferee thereof to exchange such Transfer Restricted Note for a certificated Note that does not bear the legend set forth above and rescind any restriction on the transfer of such Transfer Restricted Note, if the transferor thereof
certifies in writing to the Registrar that such sale or transfer was made in reliance on Rule 144 (such certification to be in the form set forth on the reverse of the Note). 
 (iii) After a transfer of any Initial Notes or Private Exchange Notes pursuant to and during the period of the effectiveness
of a Shelf Registration Statement with respect to such Initial Notes or Private Exchange Notes, as the case may be, all requirements pertaining to legends on such Initial Note or such Private Exchange Note will cease to apply, the requirements
requiring any such Initial Note or such Private Exchange Note issued to certain Holders be issued in global form will cease to apply, and a certificated Initial Note or Private Exchange Note or an Initial Note or Private Exchange Note in global
form, in each case without restrictive transfer legends, will be available to the transferee of the Holder of such Initial Notes or Private Exchange Notes upon exchange of such transferring Holder’s certificated Initial Note or Private Exchange
Note or appropriate directions to transfer such Holder’s interest in the Global Note, as applicable. 
 (iv) Upon the consummation of a Registered Exchange Offer with respect to the Initial Notes, all requirements pertaining to such Initial Notes that Initial Notes issued to certain Holders be issued in global form will still apply with
respect to Holders of such Initial Notes that do not exchange their Initial Notes, and Exchange Notes in certificated or global form, in each case without the restrictive securities legend set forth in Exhibit A hereto, will be available to
Holders that exchange such Initial Notes in such Registered Exchange Offer. 
 (v) Upon the consummation of a
Private Exchange with respect to the Initial Notes, all requirements pertaining to such Initial Notes that Initial Notes issued to certain Holders be issued in global form will still apply with respect to Holders of such Initial Notes that do not
exchange their Initial Notes, and Private Exchange Notes in global form with the global securities legend and the Restricted Notes Legend set forth in Exhibit A hereto, will be available to Holders that exchange such Initial Notes in such
Private Exchange. 
  

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 (f) Cancellation or Adjustment of Global Note. At such time as all beneficial
interests in a Global Note have either been exchanged for Definitive Notes, redeemed, purchased or canceled, such Global Note shall be returned to the Depository for cancellation or retained and canceled by the Trustee. At any time prior to such
cancellation, if any beneficial interest in a Global Note is exchanged for certificated Notes, redeemed, purchased or canceled, the principal amount of Notes represented by such Global Note shall be reduced, and an adjustment shall be made on the
books and records of the Trustee (if it is then the Securities Custodian) with respect to such Global Note, by the Trustee or the Securities Custodian, to reflect such reduction. 
 (g) No Obligation of the Trustee. 
 (i) The Trustee shall have no responsibility or obligation to any beneficial owner of a Global Note, a member of, or a participant in the Depository or other Person with respect to the accuracy of the
records of the Depository or its nominee or of any participant or member thereof, with respect to any ownership interest in the Notes or with respect to the delivery to any participant, member, beneficial owner or other Person (other than the
Depository) of any notice (including any notice of redemption) or the payment of any amount, under or with respect to such Notes. All notices and communications to be given to the Holders and all payments to be made to Holders under the Notes shall
be given or made only to or upon the order of the registered Holders (which shall be the Depository or its nominee in the case of a Global Note). The rights of beneficial owners in any Global Note shall be exercised only through the Depository
subject to the applicable rules and procedures of the Depository. The Trustee may rely and shall be fully protected in relying upon information furnished by the Depository with respect to its members, participants and any beneficial owners.

 (ii) The Trustee shall have no obligation or duty to monitor, determine or inquire as to compliance with any
restrictions on transfer imposed under this Indenture or under applicable law with respect to any transfer of any interest in any Note (including any transfers between or among Depository participants, members or beneficial owners in any Global
Note) other than to require delivery of such certificates and other documentation or evidence as are expressly required by, and to do so if and when expressly required by, the terms of this Indenture, and to examine the same to determine substantial
compliance as to form with the express requirements hereof. 
 2.4 Certificated Notes. 
 (a) A Global Note deposited with the Depository or with the Trustee as custodian for the Depository pursuant to Section 2.1 shall be
transferred to the beneficial owners thereof in the form of Definitive Notes in an aggregate principal amount equal to the principal amount of such Global Note, in exchange for such Global Note, only if such transfer complies with Section 2.3
hereof and (i) the Depository notifies the Company that it is unwilling or unable to continue as Depository for such Global Note or if at any time such Depository ceases to be a “clearing agency” registered under the Exchange Act and,
in either case, a successor Depository

  

 105 

 
is not appointed by the Company within 90 days of such notice, (ii) the Company, in its sole discretion, notifies the Trustee in writing that it elects to cause the issuance of
Definitive Notes under this Indenture or (iii) an Event of Default has occurred and is continuing. 
 (b) Any Global Note
that is transferable to the beneficial owners thereof pursuant to this Section shall be surrendered by the Depository to the Trustee located at its principal corporate trust office in the Borough of Manhattan, The City of New York, to be so
transferred, in whole or from time to time in part, without charge, and the Trustee shall authenticate and deliver, upon such transfer of each portion of such Global Note, an equal aggregate principal amount of Definitive Notes of authorized
denominations. Any portion of a Global Note transferred pursuant to this Section shall be executed, authenticated and delivered only in denominations of $2,000 and integral multiples of $1,000 in excess thereof and registered in such names as
the Depository shall direct. Any Definitive Note delivered in exchange for an interest in the Transfer Restricted Note shall, except as otherwise provided by Section 2.3(e) hereof, bear the restricted securities legend and definitive note
legend set forth in Exhibit A hereto. 
 (c) Subject to the provisions of Section 2.4(b) hereof, the registered
Holder of a Global Note shall be entitled to grant proxies and otherwise authorize any Person, including Agent Members and Persons that may hold interests through Agent Members, to take any action which a Holder is entitled to take under this
Indenture or the Notes. 
 (d) In the event of the occurrence of one of the events specified in Section 2.4(a) hereof,
the Company shall promptly make available to the Trustee a reasonable supply of Definitive Notes in definitive, fully-registered form without interest coupons. 
  

 106 

 EXHIBIT A 
 TO 
 RULE 144A/REGULATION S APPENDIX 
 [FORM OF FACE OF INITIAL NOTE] 
 [Global Notes Legend] 
 UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED
REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION (“DTC”), NEW YORK, NEW YORK, TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF
CEDE & CO. OR SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC) ANY TRANSFER, PLEDGE OR
OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN. 
 TRANSFERS OF THIS GLOBAL NOTE SHALL BE LIMITED TO TRANSFERS IN WHOLE, BUT NOT IN PART, TO NOMINEES OF DTC OR TO A SUCCESSOR THEREOF OR SUCH SUCCESSOR’S NOMINEE, AND TRANSFERS OF PORTIONS OF THIS
GLOBAL NOTE SHALL BE LIMITED TO TRANSFERS MADE IN ACCORDANCE WITH THE RESTRICTIONS SET FORTH IN THE INDENTURE REFERRED TO ON THE REVERSE HEREOF. 
 [For Regulation S Global Note Only] 
 UNTIL 40 DAYS AFTER THE LATER OF
COMMENCEMENT OR COMPLETION OF THE OFFERING, AN OFFER OR SALE OF NOTES WITHIN THE UNITED STATES BY A DEALER (AS DEFINED IN THE U.S. SECURITIES ACT) MAY VIOLATE THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT IF SUCH OFFER OR SALE IS MADE
OTHERWISE THAN IN ACCORDANCE WITH THE RULE 144A THEREUNDER. 
 [Restricted Notes Legend] 
 THIS NOTE (OR ITS PREDECESSOR) WAS ORIGINALLY ISSUED IN A TRANSACTION EXEMPT FROM REGISTRATION UNDER THE UNITED STATES SECURITIES ACT OF
1933, AS AMENDED (THE “SECURITIES ACT”), AND THIS NOTE MAY NOT BE OFFERED, SOLD OR OTHERWISE TRANSFERRED IN THE ABSENCE OF SUCH REGISTRATION OR AN APPLICABLE EXEMPTION THEREFROM. EACH PURCHASER OF THIS NOTE IS HEREBY NOTIFIED THAT THE
SELLER OF THIS NOTE MAY BE RELYING ON THE EXEMPTION FROM THE PROVISIONS OF SECTION 5 OF THE SECURITIES ACT PROVIDED BY RULE 144A THEREUNDER. 
  

 1 

 THE HOLDER OF THIS NOTE AGREES FOR THE BENEFIT OF THE COMPANY THAT (A) THIS NOTE
MAY BE OFFERED, RESOLD, PLEDGED OR OTHERWISE TRANSFERRED, ONLY (I) TO THE COMPANY, (II) IN THE UNITED STATES TO A PERSON WHOM THE SELLER REASONABLY BELIEVES IS A QUALIFIED INSTITUTIONAL BUYER (AS DEFINED IN RULE 144A UNDER THE
SECURITIES ACT) IN A TRANSACTION MEETING THE REQUIREMENTS OF RULE 144A, (III) OUTSIDE THE UNITED STATES IN AN OFFSHORE TRANSACTION IN ACCORDANCE WITH RULE 904 UNDER THE SECURITIES ACT, (IV) PURSUANT TO AN EXEMPTION FROM
REGISTRATION UNDER THE SECURITIES ACT PROVIDED BY RULE 144 THEREUNDER (IF AVAILABLE), (V) PURSUANT TO ANOTHER AVAILABLE EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OR (VI) PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER
THE SECURITIES ACT, IN EACH OF CASES (I) THROUGH (VI) IN ACCORDANCE WITH ANY APPLICABLE SECURITIES LAWS OF ANY STATE OF THE UNITED STATES, AND (B) THE HOLDER WILL, AND EACH SUBSEQUENT HOLDER IS REQUIRED TO, NOTIFY ANY PURCHASER OF
THIS NOTE FROM IT OF THE RESALE RESTRICTIONS REFERRED TO IN (A) ABOVE. 
 [Temporary Regulation S Global Note Legend]

 EXCEPT AS SET FORTH BELOW, BENEFICIAL OWNERSHIP INTERESTS IN THIS TEMPORARY REGULATION S GLOBAL NOTE WILL NOT BE
EXCHANGEABLE FOR INTERESTS IN THE PERMANENT REGULATION S GLOBAL NOTE OR ANY OTHER SECURITY REPRESENTING AN INTEREST IN THE NOTES REPRESENTED HEREBY WHICH DO NOT CONTAIN A LEGEND CONTAINING RESTRICTIONS ON TRANSFER, UNTIL THE EXPIRATION OF THE
“40-DAY DISTRIBUTION COMPLIANCE PERIOD” (WITHIN THE MEANING OF RULE 903(b)(3) OF REGULATION S UNDER THE SECURITIES ACT) AND THEN ONLY UPON CERTIFICATION IN FORM REASONABLY SATISFACTORY TO THE TRUSTEE THAT SUCH BENEFICIAL
INTERESTS ARE OWNED EITHER BY NON-U.S. PERSONS OR U.S. PERSONS WHO PURCHASED SUCH INTERESTS IN A TRANSACTION THAT DID NOT REQUIRE REGISTRATION UNDER THE SECURITIES ACT. DURING SUCH 40-DAY DISTRIBUTION COMPLIANCE PERIOD, BENEFICIAL OWNERSHIP
INTERESTS IN THIS TEMPORARY REGULATION S GLOBAL NOTE MAY ONLY BE SOLD, PLEDGED OR TRANSFERRED (I) TO THE COMPANY, (II) OUTSIDE THE UNITED STATES IN A TRANSACTION IN ACCORDANCE WITH RULE 904 UNDER THE SECURITIES ACT, OR
(III) PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT, IN EACH OF CASES (I) THROUGH (III) IN ACCORDANCE WITH ANY APPLICABLE SECURITIES LAWS OF ANY STATE OF THE UNITED STATES. HOLDERS OF INTERESTS IN THIS
TEMPORARY REGULATION S GLOBAL NOTE WILL NOTIFY ANY PURCHASER OF THIS NOTE OF THE RESALE RESTRICTIONS REFERRED TO ABOVE, IF THEN APPLICABLE. 
 AFTER THE EXPIRATION OF THE DISTRIBUTION COMPLIANCE PERIOD, BENEFICIAL INTERESTS IN THIS TEMPORARY REGULATION S GLOBAL NOTE MAY BE EXCHANGED FOR INTERESTS IN A RULE 144A GLOBAL NOTE ONLY IF
(1) SUCH EXCHANGE OCCURS IN CONNECTION WITH A TRANSFER OF THE

  

 2 

 
NOTES IN COMPLIANCE WITH RULE 144A AND (2) THE TRANSFEROR OF THE REGULATION S GLOBAL NOTE FIRST DELIVERS TO THE TRUSTEE A WRITTEN CERTIFICATE (IN THE FORM ATTACHED TO THIS CERTIFICATE)
TO THE EFFECT THAT THE REGULATION S GLOBAL NOTE IS BEING TRANSFERRED TO A PERSON (A) WHO THE TRANSFEROR REASONABLY BELIEVES TO BE A QUALIFIED INSTITUTIONAL BUYER WITHIN THE MEANING OF RULE 144A (B) PURCHASING FOR ITS OWN ACCOUNT OR THE
ACCOUNT OF A QUALIFIED INSTITUTIONAL BUYER IN A TRANSACTION MEETING THE REQUIREMENTS OF RULE 144A, AND (C) IN ACCORDANCE WITH ALL APPLICABLE SECURITIES LAWS OF THE STATES OF THE UNITED STATES AND OTHER JURISDICTIONS. 
 BENEFICIAL INTEREST IN A RULE 144A GLOBAL NOTE MAY BE TRANSFERRED TO A PERSON WHO TAKES DELIVERY IN THE FORM OF AN INTEREST IN THE
REGULATION S GLOBAL SECURITY, WHETHER BEFORE OR AFTER THE EXPIRATION OF THE 40-DAY DISTRIBUTION COMPLIANCE PERIOD, ONLY IF THE TRANSFEROR FIRST DELIVERS TO THE TRUSTEE A WRITTEN CERTIFICATE (IN THE FORM ATTACHED TO THIS CERTIFICATE) TO THE
EFFECT THAT IF SUCH TRANSFER IS BEING MADE IN ACCORDANCE WITH RULE 903 OR 904 OF REGULATION S OR RULE 144 (IF AVAILABLE). 
 [Definitive Notes Legend] 
 IN CONNECTION WITH ANY TRANSFER, THE HOLDER WILL DELIVER TO THE REGISTRAR AND TRANSFER
AGENT SUCH CERTIFICATES AND OTHER INFORMATION AS SUCH TRANSFER AGENT MAY REASONABLY REQUIRE TO CONFIRM THAT THE TRANSFER COMPLIES WITH THE FOREGOING RESTRICTIONS. 
 THIS NOTE WAS ISSUED WITH ORIGINAL ISSUE DISCOUNT FOR PURPOSES OF SECTIONS 1272, 1273 AND 1275 OF THE INTERNAL REVENUE CODE OF 1986, AS AMENDED. TRANSDIGM INC. AGREES TO PROVIDE PROMPTLY TO THE HOLDER OF
THIS NOTE, UPON WRITTEN REQUEST, THE ISSUE PRICE, AMOUNT OF ORIGINAL ISSUE DISCOUNT, ISSUE DATE AND YIELD TO MATURITY WITH RESPECT TO THE NOTE. ANY SUCH WRITTEN REQUEST SHOULD BE SENT TO TRANSDIGM INC. AT THE FOLLOWING ADDRESS: TRANSDIGM INC. 1301
EAST 9TH STREET, SUITE 3710 CLEVELAND, OH 44114 ATTENTION: CHIEF FINANCIAL OFFICER. 
  

 3 

 CUSIP: 
 ISIN: 
 TRANSDIGM INC. 
  

					
	No.	 		 	$

 7 3/4% SENIOR SUBORDINATED NOTE DUE 2014 
 TRANSDIGM INC., a Delaware corporation, promises to pay to “Cede & Co.”, or registered assigns, the principal sum of
[                            ] ($[        ]) on July 15, 2014.

 Interest Payment Dates: January 15 and July 15. 
 Record Dates: January 1 and July 1. 
 Dated: [                    ]. 
 Reference is made to the further provisions of this Note contained herein, which will for all purposes have the same effect as if set forth
at this place. 
 Dated: 
 TRANSDIGM
INC., 
  

					
		 	By:	 	  

		 		 	  Name:
		 		 	  Title:
			
		 	By:	 	  

		 		 	  Name:
		 		 	  Title:

 TRUSTEE’S CERTIFICATE OF AUTHENTICATION 
 THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., as Trustee, 
 certifies that this is one of the Notes referred to in the within-mentioned Indenture. 
  

					
		 	By:	 	  

		 		 	  Name:
		 		 	  Title:

  

 4 

 [FORM OF REVERSE SIDE OF INITIAL NOTE] 
 7 3/
4% SENIOR SUBORDINATED NOTES DUE 2014 
 Capitalized terms used herein shall have the meanings assigned to them in the Indenture referred to below unless otherwise indicated. 
 1. Interest. TransDigm Inc., a Delaware corporation (such corporation, and its successors and assigns under the Indenture, being herein called the “Company”), promises to pay
interest on the principal amount of this Note at 7 3/4% per annum from October 6, 2009 until maturity; provided that, if a Registration Default (as defined in the Registration Rights Agreement) occurs, additional interest (the “Additional Interest”) of $0.05
per week per $1,000 principal amount of Notes will accrue on the Notes for the first 90-day period immediately following the occurrence of a Registration Default (increasing by an additional $0.05 per week per $1,000 principal amount of Notes with
respect to each subsequent 90-day period until all Registration Defaults have been cured, up to a maximum additional interest rate of 1.00% per annum). The Company shall pay interest and Additional Interest semi-annually on January 15 and
July 15 of each year, or if any such day is not a Business Day, on the next succeeding Business Day (each an “Interest Payment Date”). Interest on the Notes will accrue from the most recent date to which interest has been paid
or, if no interest has been paid, from the date of issuance; provided that, if there is no existing Default in the payment of interest, and if this Note is authenticated between a record date referred to on the face hereof and the next
succeeding Interest Payment Date, interest shall accrue from such next succeeding Interest Payment Date; provided, further, that the first Interest Payment Date shall be January 15, 2010. The Company shall pay interest (including
post-petition interest in any proceeding under any Bankruptcy Law) on overdue principal and premium, if any, from time to time on demand at a rate that is equal to the interest rate on the Note then in effect; it shall pay interest (including
post-petition interest in any proceeding under any Bankruptcy Law) on overdue installments of interest and Additional Interest (without regard to any applicable grace periods) from time to time on demand at the same rate to the extent lawful.
Interest will be computed on the basis of a 360-day year of twelve 30-day months. 
 2. Method of Payment. The
Company will pay interest on the Notes (except defaulted interest) and Additional Interest, if any, to the Persons who are registered Holders at the close of business on the January 1 or July 1 next preceding the Interest Payment Date,
even if such Notes are canceled after such record date and on or before such Interest Payment Date, except as provided in Section 2.12 of the Indenture with respect to defaulted interest. The Notes will be payable as to principal, premium and
interest and Additional Interest, if any, at the office or agency of the Company maintained for such purpose within or without the City and State of New York, or, at the option of the Company, payment of interest and Additional Interest, if any, may
be made by check mailed to the Holders at their addresses set forth in the register of Holders; provided that payment by wire transfer of immediately available funds will be required with respect to principal of and interest, premium and
Additional Interest, if any, on, all Global Notes and all other Notes the Holders of which shall have provided wire transfer instructions to the Company or the Paying Agent. Such payment shall be in such coin or currency of the United States of
America as at the time of payment is legal tender for payment of public and private debts. 
  

 5 

 3. Paying Agent and Registrar. Initially, The Bank of New York Mellon Trust Company,
N.A., the Trustee under the Indenture, will act as Paying Agent and Registrar. The Company may change any Paying Agent or Registrar without notice to any Holder. The Company or any of its Subsidiaries may act in any such capacity. 
 4. Indenture. The Company issued the Notes under an Indenture dated as of October 6, 2009 (“Indenture”) among
the Company, Holdings, the Guarantors and the Trustee. The terms of the Notes include those stated in the Indenture and those made part of the Indenture by reference to the Trust Indenture Act of 1939, as amended (15 U.S. Code §§
77aaa-77bbbb). The Notes are subject to all such terms, and Holders are referred to the Indenture and such Act for a statement of such terms. To the extent any provision of this Note conflicts with the express provisions of the Indenture, the
provisions of the Indenture shall govern and be controlling. The Notes are obligations of the Company. 
 5.
Subordination. The Notes are subordinated to Senior Debt of the Company, as defined in the Indenture. To the extent provided in the Indenture, Senior Debt of the Company must be paid before the Notes may be paid. The Company agrees, and each
Holder, by accepting a Note, agrees, to the subordination provisions contained in the Indenture and authorizes the Trustee to give it effect and appoints the Trustee as attorney-in-fact for such purpose. 
 6. Optional Redemption. 
 On and after the date hereof, the Company may redeem the Notes (which includes Additional Notes, if any) at its option, in whole or in part, upon not less than 30 nor more than 60 days’ notice, at
the following redemption prices (expressed as percentages of the principal amount thereof) if redeemed during the twelve-month period commencing on July 15 of the year set forth below: 
  

					
	 Year
	  	Percentage	  	 
	 2009
	  	105.813%	  
	 2010
	  	103.875%	  
	 2011
	  	101.938%	  
	 2012 and thereafter
	  	100.000%	  

 7. Mandatory Redemption. The Company shall not be required to make any
mandatory redemption or sinking fund payments with respect to the Notes. 
 8. Repurchase at Option of Holder.

 If a Change of Control occurs, each Holder shall have the right to require that the Company purchase all or a portion of such
Holder’s Notes pursuant to the offer described in the Indenture (the “Change of Control Offer”), at a purchase price equal to 101% of the principal amount thereof plus accrued interest and Additional Interest, if any, to the
date of purchase. Within 30 days following the date upon which the Change of Control occurred, the Company must send, by first class mail, a notice to each Holder, which notice shall govern the terms of the

  

 6 

 
Change of Control Offer. Such notice shall state, among other things, the purchase date, which must be no earlier than 30 days nor later than 60 days from the date such notice is mailed, other
than as may be required by law (the “Change of Control Payment Date”). Holders electing to have a Note purchased pursuant to a Change of Control Offer shall be required to surrender the Note, with the form entitled “Option of
Holder to Elect Purchase” on the reverse of the Note completed, to the Paying Agent at the address specified in the notice prior to the close of business on the third Business Day prior to the Change of Control Payment Date. 
 If the Company or a Restricted Subsidiary consummates any Asset Sales, under certain circumstances, the Company is required to commence an
offer to all Holders (a “Net Proceeds Offer”) pursuant to Section 3.09 of the Indenture. The Net Proceeds Offer may also be made to holders of other Senior Subordinated Debt of the Company or a Restricted Subsidiary of the
Company requiring the making of such an offer. Pursuant to the Net Proceeds Offer, the Company shall offer to purchase, on a pro rata basis, the maximum amount of Notes and, if it so elects, such other Senior Subordinated Debt that may be
purchased with the Net Proceeds Offer Amount at a price equal to 100% of their principal amount (or, in the event such other Senior Subordinated Debt was issued with significant original issue discount, 100% of the accreted value thereof) plus
accrued and unpaid interest and Additional Interest thereon, if any, to the date of purchase, in accordance with the procedures set forth in the Indenture (or, in respect of such other Senior Subordinated Debt, such lesser price, if any, as may be
provided for by the terms of such Senior Subordinated Debt). To the extent that the aggregate amount of Notes or such other Senior Subordinated Debt tendered pursuant to a Net Proceeds Offer is less than the Net Proceeds Offer Amount, the Company
may use such deficiency for general corporate purposes or for any other purpose not prohibited by the Indenture. If the aggregate principal amount of Notes or such other Senior Subordinated Debt surrendered by holders thereof exceeds the amount of
Net Proceeds Offer Amount, the Trustee shall select the Notes to be purchased on a pro rata basis. Holders of Notes that are the subject of an offer to purchase will receive a Net Proceeds Offer from the Company prior to any related purchase
date and may elect to have such Notes purchased by completing the form entitled “Option of Holder to Elect Purchase” on the reverse of the Notes. 
 9. Notice of Redemption. Notice of redemption will be mailed at least 30 days but not more than 60 days before the redemption date to each Holder whose Notes are to be redeemed at its registered
address. Notes in denominations larger than $2,000 may be redeemed in part but only in whole multiples of $1,000, unless all of the Notes held by a Holder are to be redeemed. On and after the redemption date, interest ceases to accrue on Notes or
portions thereof called for redemption. 
 10. Denominations, Transfer, Exchange. The Notes are in registered form
without coupons in denominations of $2,000 and integral multiples of $1,000 in excess thereof. The transfer of Notes may be registered, and Notes may be exchanged as provided in the Indenture. The Registrar and the Trustee may require a Holder,
among other things, to furnish appropriate endorsements and transfer documents, and the Company may require a Holder to pay any taxes and fees required by law or permitted by the Indenture. The Company need not exchange or register the transfer of
any Note or portion of a Note selected for redemption, except for the unredeemed portion of any Note being redeemed in part. Also, the Company need not exchange or register the transfer of any Notes during a period beginning at the opening of

  

 7 

 
business 15 days before the day of the mailing of notice of redemption and ending at the close of business on such day or during the period between a record date and the next succeeding
Interest Payment Date. 
 11. Persons Deemed Owners. The registered Holder of a Note may be treated as its owner for all
purposes. 
 12. Amendment, Supplement and Waiver. Subject to certain exceptions, the Indenture, the Guarantees or the
Notes may be amended or supplemented with the consent of the Holders of at least a majority in principal amount of the then-outstanding Notes, if any, voting as a single class, and any existing default or compliance with any provision of the
Indenture, the Guarantees or the Notes may be waived with the consent of the Holders of a majority in principal amount of the then-outstanding Notes, if any, voting as a single class. Without the consent of any Holder, the Indenture, the Guarantees
or the Notes may be amended or supplemented to cure any ambiguity, defect or inconsistency, to provide for uncertificated Notes in addition to or in place of certificated Notes or to alter the provisions of Article 2 of the Indenture or the
Appendix to the Indenture relating to the form of the Notes (including the related definitions) in a manner that does not materially adversely affect any Holder, to provide for the assumption of the Company’s, Holdings’ or any
Guarantor’s obligations to Holders by a successor to the Company, Holdings or a Guarantor pursuant to Section 5.01 of the Indenture, to make any change that would provide any additional rights or benefits to the Holders or that does not
adversely affect the legal rights under the Indenture of any such Holder, to comply with the requirements of the SEC in order to effect or maintain the qualification of the Indenture under the Trust Indenture Act, to provide for the issuance of
Notes issued after the Issue Date in accordance with the limitations set forth in the Indenture, to allow any Guarantor to execute a supplemental indenture to the Indenture and/or a Guarantee with respect to the Notes to provide for the issuance of
exchange notes or private exchange notes, to conform the text of the Indenture, the Guarantees or the Notes to any provision in the Description of Notes or to the extent that such provision in the Description of Notes was intended to be a verbatim
recitation of a provision in the Indenture, the Guarantees or the Notes. 
 13. Defaults and Remedies. Events of Default
include: (i) the failure to pay interest or Additional Interest, if any, on any Notes when the same becomes due and payable if the default continues for a period of 30 days (whether or not such payment shall be prohibited by Article 10 or
Article 12 of the Indenture); (ii) the failure to pay the principal on any Notes when such principal becomes due and payable, at maturity, upon redemption or otherwise (including the failure to make a payment to purchase Notes tendered
pursuant to a Change of Control Offer or a Net Proceeds Offer on the date specified for such payment in the applicable offer to purchase) (whether or not such payment shall be prohibited by Article 10 or Article 12 of the Indenture);
(iii) a default in the observance or performance of any other covenant or agreement contained in the Indenture if the default continues for a period of 60 days after the Company receives written notice specifying the default (and demanding
that such default be remedied) from the Trustee or the Holders of at least 25% of the outstanding principal amount of the Notes (except in the case of a default with respect to Section 5.01 of the Indenture, which will constitute an Event of
Default with such notice requirement but without such passage of time requirement); (iv) the failure to pay at final stated maturity (giving effect to any applicable grace periods and any extensions thereof) the principal amount of any
Indebtedness of the Company or

  

 8 

 
any Significant Subsidiary of the Company (other than a Securitization Entity), or the acceleration of the final stated maturity of any such Indebtedness, if the aggregate principal amount of
such Indebtedness, together with the principal amount of any other such Indebtedness in default for failure to pay principal at final maturity or which has been accelerated, aggregates to $20.0 million or more at any time; (v) one or more
judgments in an aggregate amount in excess of $20.0 million shall have been rendered against the Company or any of its Significant Subsidiaries, and such judgments remain undischarged, unpaid or unstayed for a period of 60 days after such
judgment or judgments become final and non-appealable; and (vi) certain events of bankruptcy affecting the Company or any of its Significant Subsidiaries. If an Event of Default (other than an Event of Default specified in clause
(vi) above with respect to the Company) shall occur and be continuing, the Trustee or the Holders of at least 25% in principal amount of outstanding Notes may declare all the Notes to be due and payable. Notwithstanding the foregoing, in the
case of an Event of Default arising from certain events of bankruptcy with respect to the Company or any of its Significant Subsidiaries, all outstanding Notes will become due and payable without further action or notice. Holders may not enforce the
Indenture or the Notes except as provided in the Indenture and the Trust Indenture Act. Subject to certain limitations, Holders of a majority in principal amount of the then outstanding Notes may direct the Trustee in its exercise of any trust or
power. The Trustee may withhold from Holders notice of any continuing Default or Event of Default (except a Default or Event of Default relating to the payment of principal or interest or Additional Interest) if it determines that withholding notice
is in their interest. The Holders of a majority in aggregate principal amount of the Notes then outstanding, by notice to the Trustee, may, on behalf of the Holders of all of the Notes, waive any existing Default or Event of Default and its
consequences under the Indenture except a continuing Default or Event of Default in the payment of interest (including Additional Interest, if any) on, or the principal of, the Notes. The Company is required to deliver to the Trustee annually a
statement regarding compliance with the Indenture, and the Company is required, upon becoming aware of any Default or Event of Default, to deliver to the Trustee a statement specifying such Default or Event of Default. 
 14. Guarantee. The payment by the Company of the principal of, and premium and interest (including Additional Interest, if any) on,
the Notes is fully and unconditionally guaranteed on a joint and several senior subordinated basis by Holdings and each of the Guarantors. 
 15. Trustee Dealings with Company. The Trustee, in its individual or any other capacity, may make loans to, accept deposits from, and perform services for the Company or its Affiliates, and may
otherwise deal with the Company or its Affiliates, as if it were not the Trustee. 
 16. No Recourse Against Others. A
past, present or future director, officer, employee, incorporator or stockholder of Holdings, the Company or any Guarantor (other than the Company, Holdings or any Guarantor), as such, shall not have any liability for any obligations of Holdings,
the Company or such Guarantor under the Notes, the Guarantees or the Indenture or for any claim based on, in respect of, or by reason of, such obligations or their creation. Each Holder, by accepting a Note, waives and releases all such liability.
The waiver and release are part of the consideration for the issuance of the Notes. 
  

 9 

 17. Authentication. This Note shall not be valid until authenticated by the manual
signature of the Trustee or an authenticating agent. 
 18. Abbreviations. Customary abbreviations may be used in the
name of a Holder or an assignee, such as: TEN COM (= tenants in common), TEN ENT (= tenants by the entireties), JT TEN (= joint tenants with right of survivorship and not as tenants in common), CUST (=Custodian), and U/G/M/A (= Uniform Gifts to
Minors Act). 
 19. Additional Rights of Holders of Restricted Global Notes and Restricted Definitive Notes. In addition
to the rights provided to Holders under the Indenture, Holders shall have all the rights set forth in the Registration Rights Agreement dated as of October 6, 2009, among the Company, Holdings, the Guarantors and the other parties named on the
signature pages thereof. Each Holder, by acceptance hereof, acknowledges and agrees to the provisions of the Registration Rights Agreement, including the obligations of the Holders with respect to a registration and the indemnification of the
Company and other named persons to the extent provided therein. 
 20. CUSIP and ISIN Numbers. Pursuant to a
recommendation promulgated by the Committee on Uniform Security Identification Procedures, the Company has caused CUSIP and ISIN numbers to be printed on the Notes, and the Trustee may use CUSIP or ISIN numbers in notices of redemption as a
convenience to Holders. No representation is made as to the accuracy of such numbers either as printed on the Notes or as contained in any notice of redemption, and reliance may be placed only on the other identification numbers placed thereon.

 The Company will furnish to any Holder, upon written request and without charge, a copy of the Indenture and/or the
Registration Rights Agreement. Requests may be made to: 
 TransDigm Inc. 
 1301 East 9th Street, Suite 3710 
 Cleveland, OH 44114 
 Attention: Chief Financial Officer 
  

 10 

 ASSIGNMENT FORM 
 To assign this Note, fill in the form below: 
 I or we assign and transfer this Note to

 Assignee’s Legal Name, Address, and Zip Code 
 Assignee’s soc. sec. or tax I.D. No. 
 and irrevocably appoint
                     agent to transfer this Note on the books of the Company. The agent may substitute another to act for him. 
  
  
 Date:                      Your Signature:
                                         
                                
  
  
 Sign exactly as your name appears on the other side of this Note. 
 In connection with any
transfer of any of the Notes evidenced by this certificate occurring prior to the expiration of the period referred to in Rule 144 under the Securities Act after the later of the date of original issuance of such Notes and the last
date, if any, on which such Notes were owned by the Company or any Affiliate of the Company, the undersigned confirms that such Notes are being transferred in accordance with its terms: 
 CHECK ONE BOX BELOW 
  

					
	(1)	  	 ̈	  	to the Company; or
			
	(2)	  	 ̈	  	inside the United States to a “qualified institutional buyer” (as defined in Rule 144A under the Securities Act of 1933, as amended (the “Securities Act”)
that purchases for its own account or for the account of a qualified institutional buyer to whom notice is given that such transfer is being made in reliance on Rule 144A, in each case pursuant to and in compliance with Rule 144A under the
Securities Act; or
			
	(3)	  	 ̈	  	outside the United States in an offshore transaction within the meaning of Regulation S under the Securities Act in compliance with Rule 904 under the Securities Act;
or
			
	(4)	  	 ̈	  	pursuant to the exemption from registration provided by Rule 144 under the Securities Act; or
			
	(5)	  	 ̈	  	pursuant to another available exemption from registration under the Securities Act; or
			
	(6)	  	 ̈	  	pursuant to an effective registration statement under the Securities Act;

  

 11 

 Unless one of the boxes is checked, the Trustee will refuse to register any of the Notes
evidenced by this certificate in the name of any person other than the registered holder thereof; provided, however, that if box (3), (4) or (5) is checked, the Trustee shall be entitled to require, prior to registering any
such transfer of the Notes, such legal opinions, certifications and other information as the Company has reasonably requested to confirm that such transfer is being made pursuant to an exemption from, or in a transaction not subject to, the
registration requirements of the Securities Act of 1933, such as the exemption provided by Rule 144 under such Act. 
  

					
		 		 	  

		 		 	Signature
	Signature Guarantee:	 		 	
			
	  
	 		 	  

	Signature must be guaranteed	 		 	Signature

 Signatures must be guaranteed by an “eligible guarantor institution”
meeting the requirements of the Registrar, which requirements include membership or participation in the Security Transfer Agent Medallion Program (“STAMP”) or such other “signature guarantee program” as may be determined by the
Registrar in addition to, or in substitution for, STAMP, all in accordance with the Securities Exchange Act of 1934, as amended. 
  
  
 TO BE COMPLETED BY
PURCHASER IF (2) ABOVE IS CHECKED. 
 The undersigned represents and warrants that it is purchasing this Note for its own
account or an account with respect to which it exercises sole investment discretion and that it and any such account is a “qualified institutional buyer” within the meaning of Rule 144A under the Securities Act of 1933, as amended,
and is aware that the sale to it is being made in reliance on Rule 144A and acknowledges that it has received such information regarding the Company as the undersigned has requested pursuant to Rule 144A or has determined not to request
such information and that it is aware that the transferor is relying upon the undersigned’s foregoing representations in order to claim the exemption from registration provided by Rule 144A. 
  

							
	Dated:	 	  
	 		 	  

		 		 		 	NOTICE: To be executed by an executive officer

  

 12 

 SCHEDULE OF INCREASES OR DECREASES IN GLOBAL NOTE 
 The following increases or decreases in this Global Note have been made: 
  

									
	 Date of Exchange
	 	 Amount of decrease in
Principal amount of this
Global
Note
	 	 Amount of increase in
Principal amount of this
Global
Note
	 	 Principal amount of this
Global Note following
such
decrease or increase)
	 	 Signature of authorized
officer of Trustee
or
Custodian for the Notes

  
  

 13 

 OPTION OF HOLDER TO ELECT PURCHASE 
 If you want to elect to have this Note purchased by the Company pursuant to Section 4.10 or 4.15 of the Indenture, check the box:

  

																	
					 				
		 		 		 		 	 	 		 		 		 	

 If you want to elect to have only part of this Note purchased by the Company pursuant
to Section 4.10 or 4.15 of the Indenture, state the amount in principal amount: $ 
  

									
	Dated:	 	  
	 		 	Your Signature:	 	  

		 		 		 		 	(Sign exactly as your name appears on the other side of this Security.)

  

					
	Signature Guarantee:	 	  
	 	
		 	(Signature must be guaranteed)	 	

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

 14 

 EXHIBIT B 
 TO 
 RULE 144A/REGULATIONS APPENDIX 
 CUSIP: 
 ISIN:

 [FORM OF FACE OF EXCHANGE NOTE 
 OR PRIVATE EXCHANGE NOTE] */**/ 
  
 */ If the Note is to be issued in global form, add the Global Notes Legend from Exhibit A to Rule 144A/Regulation S Appendix and the attachment
from such Exhibit A captioned—SCHEDULE OF INCREASES OR DECREASES IN GLOBAL NOTE”. 
 **/ If the Note is a Private Exchange Note
issued in a Private Exchange to an Initial Purchaser holding an unsold portion of its initial allotment, add the Restricted Notes Legend from Exhibit A to Rule 144A/Regulation S Appendix and replace the Assignment Form included
in this Exhibit B with the Assignment Form included in such Exhibit A. 
  

 1 

 TRANSDIGM INC. 
  

					
	No.	 		  	$

 7 3/4% SENIOR SUBORDINATED NOTES DUE 2014 
 TRANSDIGM INC., a Delaware corporation promises to pay to “Cede & Co.”, or registered assigns, the principal sum of
[                            ] ($[        ]) on July 15, 2014.

 Interest Payment Dates: January 15 and July 15. 
 Record Dates: January 1 and July 1. 
 Date: [                    ] 
 Reference is made to the further provisions of this Note contained herein, which will for all purposes have the same effect as if set forth
at this place. 
  

					
	Dated:	 		 	
	
	TRANSDIGM INC.,
			
		 	By:	 	  

		 		 	  Name:
		 		 	  Title:
			
		 	By:	 	  

		 		 	  Name:
		 		 	  Title:

 TRUSTEE’S CERTIFICATE OF AUTHENTICATION 
 THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., 
 as Trustee, certifies that this is one of the Notes referred to 
 in the within-mentioned Indenture. 
  

					
		 	By:	 	  

		 		 	  Name:
		 		 	  Title:

  

 2 

 [FORM OF REVERSE SIDE OF EXCHANGE NOTE OR PRIVATE EXCHANGE NOTE] 
 7 3/
4% SENIOR SUBORDINATED NOTES DUE 2014 
 Capitalized terms used herein shall have the meanings assigned to them in the Indenture referred to below unless otherwise indicated. 
 1. Interest. TransDigm Inc., a Delaware corporation (such corporation, and its successors and assigns under the Indenture, being herein called the “Company”), promises to pay
interest on the principal amount of this Note at 7 3/4% per annum from October 6, 2009 until maturity; provided that if a Registration Default (as defined in the Registration Rights Agreement) occurs, additional interest (the “Additional Interest”) of $0.05
per week per $1,000 principal amount of Notes will accrue on the Notes for the first 90-day period immediately following the occurrence of a Registration Default (increasing by an additional $0.05 per week per $1,000 principal amount of Notes with
respect to each subsequent 90-day period until all Registration Defaults have been cured, up to a maximum additional interest rate of 1.00% per annum). The Company shall pay interest and Additional Interest semi-annually on January 15 and
July 15 of each year, or if any such day is not a Business Day, on the next succeeding Business Day (each an “Interest Payment Date”). Interest on the Notes will accrue from the most recent date to which interest has been paid
or, if no interest has been paid, from the date of issuance; provided that, if there is no existing Default in the payment of interest, and if this Note is authenticated between a record date referred to on the face hereof and the next
succeeding Interest Payment Date, interest shall accrue from such next succeeding Interest Payment Date; provided, further, that the first Interest Payment Date shall be January 15, 2010. The Company shall pay interest (including
post-petition interest in any proceeding under any Bankruptcy Law) on overdue principal and premium, if any, from time to time on demand at a rate that is equal to the interest rate on the Note then in effect; it shall pay interest (including
post-petition interest in any proceeding under any Bankruptcy Law) on overdue installments of interest and Additional Interest (without regard to any applicable grace periods) from time to time on demand at the same rate to the extent lawful.
Interest will be computed on the basis of a 360-day year of twelve 30-day months. 
 2. Method of Payment. The
Company will pay interest on the Notes (except defaulted interest) and Additional Interest, if any, to the Persons who are registered Holders at the close of business on the January 1 or July 1 next preceding the Interest Payment Date,
even if such Notes are canceled after such record date and on or before such Interest Payment Date, except as provided in Section 2.12 of the Indenture with respect to defaulted interest. The Notes will be payable as to principal, premium and
interest and Additional Interest, if any, at the office or agency of the Company maintained for such purpose within or without the City and State of New York, or, at the option of the Company, payment of interest and Additional Interest, if any, may
be made by check mailed to the Holders at their addresses set forth in the register of Holders; provided that payment by wire transfer of immediately available funds will be required with respect to principal of and interest, premium and
Additional Interest, if any, on, all Global Notes and all other Notes the Holders of which shall have provided wire transfer instructions to the Company or the Paying Agent. Such payment shall be in such coin or currency of the United States of
America as at the time of payment is legal tender for payment of public and private debts. 
  

 3 

 3. Paying Agent and Registrar. Initially, The Bank of New York Mellon Trust Company,
N.A., the Trustee under the Indenture, will act as Paying Agent and Registrar. The Company may change any Paying Agent or Registrar without notice to any Holder. The Company or any of its Subsidiaries may act in any such capacity. 
 4. Indenture. The Company issued the Notes under an Indenture dated as of October 6, 2009 (“Indenture”) among
the Company, Holdings, the Guarantors and the Trustee. The terms of the Notes include those stated in the Indenture and those made part of the Indenture by reference to the Trust Indenture Act of 1939, as amended (15 U.S. Code §§
77aaa-77bbbb). The Notes are subject to all such terms, and Holders are referred to the Indenture and such Act for a statement of such terms. To the extent any provision of this Note conflicts with the express provisions of the Indenture, the
provisions of the Indenture shall govern and be controlling. The Notes are obligations of the Company. 
 5.
Subordination. The Notes are subordinated to Senior Debt of the Company, as defined in the Indenture. To the extent provided in the Indenture, Senior Debt of the Company must be paid before the Notes may be paid. The Company agrees, and each
Holder, by accepting a Note, agrees, to the subordination provisions contained in the Indenture and authorizes the Trustee to give it effect and appoints the Trustee as attorney-in-fact for such purpose. 
 6. Optional Redemption. 
 On and after the date hereof, the Company may redeem the Notes (which includes Additional Notes, if any) at its option, in whole or in part, upon not less than 30 nor more than 60 days’ notice, at
the following redemption prices (expressed as percentages of the principal amount thereof) if redeemed during the twelve-month period commencing on July 15 of the year set forth below: 
  

					
	 Year
	  	Percentage	  	 
	 2009
	  	105.813%	  
	 2010
	  	103.875%	  
	 2011
	  	101.938%	  
	 2012 and thereafter
	  	100.000%	  

 7. Mandatory Redemption. The Company shall not be required to make any
mandatory redemption or sinking fund payments with respect to the Notes. 
 8. Repurchase at Option of Holder.

 If a Change of Control occurs, each Holder shall have the right to require that the Company purchase all or a portion of such
Holder’s Notes pursuant to the offer described in the Indenture (the “Change of Control Offer”), at a purchase price equal to 101% of the principal amount thereof plus accrued interest and Additional Interest, if any, to the
date of purchase. Within 30 days following the date upon which the Change of Control occurred, the Company must send, by first class mail, a notice to the Trustee and each Holder, which notice shall govern

  

 4 

 
the terms of the Change of Control Offer. Such notice shall state, among other things, the purchase date, which must be no earlier than 30 days nor later than 60 days from the date such notice is
mailed, other than as may be required by law (the “Change of Control Payment Date”). Holders electing to have a Note purchased pursuant to a Change of Control Offer shall be required to surrender the Note, with the form entitled
“Option of Holder to Elect Purchase” on the reverse of the Note completed, to the Paying Agent at the address specified in the notice prior to the close of business on the third Business Day prior to the Change of Control Payment Date.

 If the Company or a Restricted Subsidiary consummates any Asset Sales, under certain circumstances, the Company is required
to commence an offer to all Holders (a “Net Proceeds Offer”) pursuant to Section 3.09 of the Indenture. The Net Proceeds Offer may also be made to holders of other Senior Subordinated Debt of the Company or a Restricted
Subsidiary of the Company requiring the making of such an offer. Pursuant to the Net Proceeds Offer, the Company shall offer to purchase, on a pro rata basis, the maximum amount of Notes and, if it so elects, such other Senior Subordinated
Debt that may be purchased with the Net Proceeds Offer Amount at a price equal to 100% of their principal amount (or, in the event such other Senior Subordinated Debt was issued with significant original issue discount, 100% of the accreted value
thereof) plus accrued and unpaid interest and Additional Interest thereon, if any, to the purchase date, in accordance with the procedures set forth in the Indenture (or, in respect of such other Senior Subordinated Debt, such lesser price, if any,
as may be provided for by the terms of such Senior Subordinated Debt). To the extent that the aggregate amount of Notes or such other Senior Subordinated Debt tendered pursuant to a Net Proceeds Offer is less than the Net Proceeds Offer Amount, the
Company may use such deficiency for general corporate purposes or for any other purpose not prohibited by the Indenture. If the aggregate principal amount of Notes or such other Senior Subordinated Debt surrendered by holders thereof exceeds the
amount of Net Proceeds Offer Amount, the Trustee shall select the Notes to be purchased on a pro rata basis. Holders of Notes that are the subject of an offer to purchase will receive a Net Proceeds Offer from the Company prior to any related
purchase date and may elect to have such Notes purchased by completing the form entitled “Option of Holder to Elect Purchase” on the reverse of the Notes. 
 9. Notice of Redemption. Notice of redemption will be mailed at least 30 days but not more than 60 days before the redemption date to each Holder whose Notes are to be redeemed at its registered
address. Notes in denominations larger than $2,000 may be redeemed in part but only in whole multiples of $1,000, unless all of the Notes held by a Holder are to be redeemed. On and after the redemption date interest ceases to accrue on Notes or
portions thereof called for redemption. 
 10. Denominations, Transfer, Exchange. The Notes are in registered form
without coupons in denominations of $2,000 and integral multiples of $1,000 in excess thereof. The transfer of Notes may be registered, and Notes may be exchanged as provided in the Indenture. The Registrar and the Trustee may require a Holder,
among other things, to furnish appropriate endorsements and transfer documents and the Company may require a Holder to pay any taxes and fees required by law or permitted by the Indenture. The Company need not exchange or register the transfer of
any Note or portion of a Note selected for redemption, except for the unredeemed portion of any Note being redeemed in part. Also, the Company need not exchange or register the transfer of any Notes during a period beginning at the opening of

  

 5 

 
business 15 days before the day of the mailing of notice of redemption and ending at the close of business on such day or during the period between a record date and the next succeeding
Interest Payment Date. 
 11. Persons Deemed Owners. The registered Holder of a Note may be treated as its owner for all
purposes. 
 12. Amendment, Supplement and Waiver. Subject to certain exceptions, the Indenture, the Guarantees or the
Notes may be amended or supplemented with the consent of the Holders of at least a majority in principal amount of the then-outstanding Notes, if any, voting as a single class, and any existing default or compliance with any provision of the
Indenture, the Guarantees or the Notes may be waived with the consent of the Holders of a majority in principal amount of the then outstanding Notes, if any, voting as a single class. Without the consent of any Holder, the Indenture, the Guarantees
or the Notes may be amended or supplemented, to cure any ambiguity, defect or inconsistency, to provide for uncertificated Notes in addition to or in place of certificated Notes or to alter the provisions of Article 2 of the Indenture or the
Appendix to the Indenture relating to the form of the Notes (including the related definitions) in a manner that does not materially adversely affect any Holder, to provide for the assumption of the Company’s, Holdings’ or any
Guarantor’s obligations to Holders by a successor to the Company, Holdings or a Guarantor pursuant to Section 5.01 of the Indenture, to make any change that would provide any additional rights or benefits to the Holders or that does not
adversely affect the legal rights under the Indenture of any such Holder, to comply with the requirements of the SEC in order to effect or maintain the qualification of the Indenture under the Trust Indenture Act, to provide for the issuance of
Notes issued after the Issue Date in accordance with the limitations set forth in the Indenture, to allow any Guarantor to execute a supplemental indenture to the Indenture and/or a Guarantee with respect to the Notes to provide for the issuance of
exchange notes or private exchange notes, to conform the text of the Indenture, the Guarantees or the Notes to any provision in the Description of Notes or to the extent that such provision in the Description of Notes was intended to be a verbatim
recitation of a provision in the Indenture, the Guarantees or the Notes. 
 13. Defaults and Remedies. Events of Default
include: (i) the failure to pay interest or Additional Interest, if any, on any Notes when the same becomes due and payable if the default continues for a period of 30 days (whether or not such payment shall be prohibited by Article 10 or
Article 12 of the Indenture); (ii) the failure to pay the principal on any Notes when such principal becomes due and payable, at maturity, upon redemption or otherwise (including the failure to make a payment to purchase Notes tendered
pursuant to a Change of Control Offer or a Net Proceeds Offer on the date specified for such payment in the applicable offer to purchase) (whether or not such payment shall be prohibited by Article 10 or Article 12 of the Indenture);
(iii) a default in the observance or performance of any other covenant or agreement contained in the Indenture if the default continues for a period of 60 days after the Company receives written notice specifying the default (and demanding
that such default be remedied) from the Trustee or the Holders of at least 25% of the outstanding principal amount of the Notes (except in the case of a default with respect to Section 5.01 of the Indenture, which will constitute an Event of
Default with such notice requirement but without such passage of time requirement); (iv) the failure to pay at final stated maturity (giving effect to any applicable grace periods and any extensions thereof) the principal amount of any
Indebtedness of the Company or

  

 6 

 
any Significant Subsidiary of the Company (other than a Securitization Entity) or the acceleration of the final stated maturity of any such Indebtedness, if the aggregate principal amount of such
Indebtedness, together with the principal amount of any other such Indebtedness in default for failure to pay principal at final maturity or which has been accelerated, aggregates to $20.0 million or more at any time; (v) one or more
judgments in an aggregate amount in excess of $20.0 million shall have been rendered against the Company or any of its Significant Subsidiaries, and such judgments remain undischarged, unpaid or unstayed for a period of 60 days after such
judgment or judgments become final and non-appealable; and (vi) certain events of bankruptcy affecting the Company or any of its Significant Subsidiaries. If any Event of Default occurs and is continuing, the Trustee or the Holders of at least
25% in principal amount of the then-outstanding Notes may declare all the Notes to be due and payable. Notwithstanding the foregoing, in the case of an Event of Default arising from certain events of bankruptcy with respect to the Company or any of
its Significant Subsidiaries, all outstanding Notes will become due and payable without further action or notice. Holders may not enforce the Indenture or the Notes except as provided in the Indenture and the Trust Indenture Act. Subject to certain
limitations, Holders of a majority in principal amount of the then-outstanding Notes may direct the Trustee in its exercise of any trust or power. The Trustee may withhold from Holders notice of any continuing Default or Event of Default (except a
Default or Event of Default relating to the payment of principal or interest or Additional Interest) if it determines that withholding notice is in their interest. The Holders of a majority in aggregate principal amount of the Notes then
outstanding, by notice to the Trustee, may, on behalf of the Holders of all of the Notes, waive any existing Default or Event of Default and its consequences under the Indenture except a continuing Default or Event of Default in the payment of
interest (including Additional Interest, if any) on, or the principal of, the Notes. The Company is required to deliver to the Trustee annually a statement regarding compliance with the Indenture, and the Company is required, upon becoming aware of
any Default or Event of Default, to deliver to the Trustee a statement specifying such Default or Event of Default. 
 14.
Guarantee. The payment by the Company of the principal of, and premium and interest (including Additional Interest, if any) on, the Notes is fully and unconditionally guaranteed on a joint and several senior subordinated basis by Holdings and
each of the Guarantors. 
 15. Trustee Dealings with Company. The Trustee, in its individual or any other capacity, may
make loans to, accept deposits from, and perform services for the Company or its Affiliates, and may otherwise deal with the Company or its Affiliates, as if it were not the Trustee. 
 16. No Recourse Against Others. A past, present or future director, officer, employee, incorporator or stockholder of Holdings, the
Company or any Guarantor (other than the Company, Holdings or any Subsidiary of the Company that is a Guarantor), as such, shall not have any liability for any obligations of Holdings, the Company or such Guarantor under the Notes, the Guarantees or
the Indenture or for any claim based on, in respect of, or by reason of, such obligations or their creation. Each Holder, by accepting a Note, waives and releases all such liability. The waiver and release are part of the consideration for the
issuance of the Notes. 
  

 7 

 17. Authentication. This Note shall not be valid until authenticated by the manual
signature of the Trustee or an authenticating agent. 
 18. Abbreviations. Customary abbreviations may be used in the
name of a Holder or an assignee, such as: TEN COM (= tenants in common), TEN ENT (= tenants by the entireties), JT TEN (= joint tenants with right of survivorship and not as tenants in common), CUST (=Custodian), and U/G/M/A (= Uniform Gifts to
Minors Act). 
 [19. Additional Rights of Holders of Restricted Global Notes and Restricted Definitive
Notes. In addition to the rights provided to Holders under the Indenture, Holders shall have all the rights set forth in the Registration Rights Agreement dated as of October 6, 2009, among the Company, Holdings, the Guarantors and the
other parties named on the signature pages thereof. Each Holder, by acceptance hereof, acknowledges and agrees to the provisions of the Registration Rights Agreement, including the obligations of the Holders with respect to a registration and
the indemnification of the Company and other named persons to the extent provided therein.]1 
 20. CUSIP and ISIN Numbers. Pursuant to a recommendation promulgated by
the Committee on Uniform Security Identification Procedures, the Company has caused CUSIP and ISIN numbers to be printed on the Notes, and the Trustee may use CUSIP or ISIN numbers in notices of redemption as a convenience to Holders. No
representation is made as to the accuracy of such numbers either as printed on the Notes or as contained in any notice of redemption, and reliance may be placed only on the other identification numbers placed thereon. 
 The Company will furnish to any Holder, upon written request and without charge, a copy of the Indenture and/or the Registration Rights
Agreement. Requests may be made to: 
 TransDigm Inc. 
 1301 East 9th Street, Suite 3710 
 Cleveland, OH 44114 
 Attention: Chief Financial Officer 
  
 1 Delete if this Note is not being issued in
exchange for an Initial Note. 
  

 8 

 ASSIGNMENT FORM 
 To assign this Note, fill in the form below: 
 I or we assign and transfer this Note to

 Assignee’s Legal Name, Address, and Zip Code 
 Assignee’s soc. Sec. or tax I.D. No. 
 and irrevocably appoint
                     agent to transfer this Note on the books of the Company. The agent may substitute another to act for him. 
  

							
	  

				
	Dated:	 	  
	  	Your Signature:	 	  

	
	  

 (Sign exactly as your name appears on the other side of this Security.) 
  

 9 

 OPTION OF HOLDER TO ELECT PURCHASE 
 If you want to elect to have this Note purchased by the Company pursuant to Section 4.10 or 4.15 of the Indenture, check the box:

  

																	
					 				
		 		 		 		 	 	 		 		 		 	

 If you want to elect to have only part of this Note purchased by the Company pursuant
to Section 4.10 or 4.15 of the Indenture, state the amount in principal amount: $ 
  

									
	Dated:	 	  
	 		 	Your Signature:	 	  

		 		 		 		 	(Sign exactly as your name appears on the other side of this Security.)

  

					
	Signature Guarantee:	 	  
	 	
		 	(Signature must be guaranteed)	 	

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

 10Registration Rights Agreement

 Exhibit 4.2 
 EXECUTION COPY 
 $425,000,000 
 TRANSDIGM INC. 
 7 3/4% Senior Subordinated Notes due 2014 
 REGISTRATION RIGHTS AGREEMENT 
 October 6, 2009 
 CREDIT SUISSE SECURITIES (USA) LLC (“Credit Suisse”), 
   As
representative of the Initial Purchasers, 
      Eleven Madison Avenue, 
          New York, N.Y. 10010-3629 
 Dear Sirs: 
 TransDigm Inc., a Delaware corporation (the
“Issuer”), proposes to issue and sell to Credit Suisse, as representative of the initial purchasers set forth on Schedule II hereto (the “Initial Purchasers”), upon the terms set forth in a purchase agreement (the “Purchase
Agreement”), $425,000,000 aggregate principal amount of its 7 3/4% Senior Subordinated Notes due 2014 (the “Initial Securities”) to be unconditionally guaranteed (the “Guarantees”) by TransDigm Group Incorporated and the subsidiaries of the Issuer
listed on Schedule I hereto (hereinafter collectively referred to as the “Guarantors”). The Issuer and the Guarantors are collectively referred to herein as the “Company”. The Initial Securities will be issued pursuant to an
indenture, dated of even date herewith (the “Indenture”), among the Issuer, the Guarantors and The Bank of New York Mellon Trust Company, N.A., a national banking association, as trustee (the “Trustee”). As an inducement to the
Initial Purchasers, the Company agrees with the Initial Purchasers, for the benefit of the holders of the Initial Securities (including, without limitation, the Initial Purchasers), the Exchange Securities (as defined below) and the Private Exchange
Securities (as defined below) (collectively the “Holders”), as follows: 
 1. Registered Exchange
Offer. The Company shall, at its own cost, prepare and, not later than 180 days (or if the 180th day is not a business day, the first business day thereafter) after the date of original issue of the Initial Securities (the “Issue
Date”), file with the Securities and Exchange Commission (the “Commission”) a registration statement (the “Exchange Offer Registration Statement”) on an appropriate form under the Securities Act of 1933, as amended (the
“Securities Act”), with respect to a proposed offer (the “Registered Exchange Offer”) to the Holders of Transfer Restricted Securities (as defined in Section 6(d) hereof), who are not prohibited by any law or policy of the
Commission from participating in the Registered Exchange Offer, to issue and deliver to such Holders, in exchange for the Initial Securities, an equal aggregate principal amount of debt securities (the “Exchange Securities”) of the Issuer
issued under the Indenture and identical in all material respects to the Initial Securities (except for the transfer restrictions relating to the Initial Securities and the provisions relating to the matters described in Section 6 hereof) that
would be registered under the Securities Act. The Company shall use its reasonable best efforts to cause such Exchange Offer Registration Statement to become effective under the Securities Act within 270 days (or if the 270th day is not a business
day, the first business day thereafter) after the Issue Date and shall keep the Exchange Offer Registration Statement effective for not less than 30 days (or longer, if required by applicable law) after the date notice of the Registered Exchange
Offer is mailed to the Holders (such period being called the “Exchange Offer Registration Period”). 
 If the Company
effects the Registered Exchange Offer, the Company will be entitled to close the Registered Exchange Offer 30 days after the commencement thereof; provided that the Company has accepted all the Initial Securities theretofore validly tendered
in accordance with the terms of the Registered Exchange Offer. 

 As soon as practicable after the declaration of the effectiveness of the Exchange Offer
Registration Statement, the Company shall commence the Registered Exchange Offer, it being the objective of such Registered Exchange Offer to enable each Holder of Transfer Restricted Securities (as defined in Section 6(d) hereof) electing to
exchange the Initial Securities for Exchange Securities (assuming that such Holder is not an affiliate of the Company within the meaning of the Securities Act, acquires the Exchange Securities in the ordinary course of such Holder’s business
and has no arrangements with any person to participate in the distribution of the Exchange Securities and is not prohibited by any law or policy of the Commission from participating in the Registered Exchange Offer) to trade such Exchange Securities
from and after their receipt without any limitations or restrictions under the Securities Act and without material restrictions under the securities laws of the several states of the United States. 
 The Company acknowledges that, pursuant to current interpretations by the Commission’s staff of Section 5 of the Securities Act,
in the absence of an applicable exemption therefrom, (i) each Holder which is a broker-dealer electing to exchange Initial Securities, acquired for its own account as a result of market-making activities or other trading activities, for
Exchange Securities (an “Exchanging Dealer”), is required to deliver a prospectus containing the information set forth in (a) Annex A hereto on the cover, (b) Annex B hereto in the “Exchange Offer Procedures” section
and the “Purpose of the Exchange Offer” section, and (c) Annex C hereto in the “Plan of Distribution” section of such prospectus in connection with a sale of any such Exchange Securities received by such Exchanging Dealer
pursuant to the Registered Exchange Offer and (ii) if the Initial Purchasers elect to sell Exchange Securities acquired in exchange for Initial Securities constituting any portion of an unsold allotment, the Initial Purchasers will be required
to deliver a prospectus containing the information required by Items 507 or 508 of Regulation S-K under the Securities Act, as applicable, in connection with such sale. 
 The Company shall use its reasonable best efforts to keep the Exchange Offer Registration Statement effective and to amend and supplement the prospectus contained therein, in order to permit such
prospectus to be lawfully delivered by all persons subject to the prospectus delivery requirements of the Securities Act for such period of time as such persons must comply with such requirements in order to resell the Exchange Securities;
provided, however, that (i) in the case where such prospectus and any amendment or supplement thereto must be delivered by an Exchanging Dealer or the Initial Purchasers, such period shall be the lesser of 180 days and the date on which
all Exchanging Dealers and the Initial Purchasers have sold all Exchange Securities held by them (unless such period is extended pursuant to Section 3(j) below) and (ii) the Company shall make such prospectus and any amendment or
supplement thereto, available to any broker-dealer for use in connection with any resale of any Exchange Securities for a period of not less than 180 days after the consummation of the Registered Exchange Offer. 
 If, upon consummation of the Registered Exchange Offer, any Initial Purchaser holds Initial Securities acquired by it as part of its initial
distribution, the Company, simultaneously with the delivery of the Exchange Securities pursuant to the Registered Exchange Offer, shall issue and deliver to such Initial Purchaser upon the written request of such Initial Purchaser, in exchange (the
“Private Exchange”) for the Initial Securities held by such Initial Purchaser, an equal principal amount of debt securities of the Company issued under the Indenture and identical in all material respects (including the existence of
restrictions on transfer under the Securities Act and the securities laws of the several states of the United States, but excluding provisions relating to the matters described in Section 6 hereof) to the Initial Securities (the “Private
Exchange Securities”). The Initial Securities, the Exchange Securities and the Private Exchange Securities are herein collectively called the “Securities”. 
 In connection with the Registered Exchange Offer, the Company shall: 
 (a) mail, or cause to be mailed, to each Holder a copy of the prospectus forming part of the Exchange Offer Registration Statement, together with an appropriate letter of transmittal and related documents; 
  

 2 

 (b) keep the Registered Exchange Offer open for not less than 30 days
(or longer, if required by applicable law) after the date notice thereof is mailed to the Holders; 
 (c) utilize the services of a depositary for the Registered Exchange Offer with an address in the Borough of Manhattan, The City of New York, which may be the Trustee or an affiliate of the Trustee; 
 (d) permit Holders to withdraw tendered Securities at any time prior to the close of business, New York time, on the
last business day on which the Registered Exchange Offer shall remain open; and 
 (e) otherwise comply in
all material respects with all applicable laws. 
 As soon as practicable after the close of the Registered Exchange Offer or
the Private Exchange, as the case may be, the Company shall: 
 (x) accept for exchange all the Securities
validly tendered and not withdrawn pursuant to the Registered Exchange Offer and the Private Exchange; 
 (y) deliver to the Trustee for cancellation all the Initial Securities so accepted for exchange; and 
 (z) cause the Trustee to authenticate and deliver promptly to each Holder of the Initial Securities, Exchange Securities or Private Exchange Securities, as the case may be, equal in principal amount to the Initial Securities of such
Holder so accepted for exchange. 
 The Indenture provides that the Exchange Securities are not subject to the transfer
restrictions set forth in the Indenture and that all the Securities vote and consent together on all matters as one class and that none of the Securities have the right to vote or consent as a class separate from one another on any matter.

 Interest on each Exchange Security and Private Exchange Security issued pursuant to the Registered Exchange Offer and in the
Private Exchange will accrue from the last interest payment date on which interest was paid on the Initial Securities surrendered in exchange therefor or, if no interest has been paid on the Initial Securities, from the Issue Date. 
 Each Holder participating in the Registered Exchange Offer shall be required to represent to the Company that, at the time of the
consummation of the Registered Exchange Offer, (i) any Exchange Securities received by such Holder will be acquired in the ordinary course of business, (ii) such Holder will have no arrangements or understanding with any person to
participate in the distribution of the Securities or the Exchange Securities within the meaning of the Securities Act, (iii) such Holder is not an “affiliate,” as defined in Rule 405 of the Securities Act, of the Company, or if it is
an affiliate, such Holder will comply with the registration and prospectus delivery requirements of the Securities Act to the extent applicable, (iv) if such Holder is not a broker-dealer, that it is not engaged in, and does not intend to
engage in, the distribution of the Exchange Securities and (v) if such Holder is a broker-dealer, that it will receive Exchange Securities for its own account in exchange for Initial Securities that were acquired as a result of market-making
activities or other trading activities and that it will be required to acknowledge that it will deliver a prospectus in connection with any resale of such Exchange Securities. 
 Notwithstanding any other provisions hereof, the Company will ensure that (i) any Exchange Offer Registration Statement and any
amendment thereto and any prospectus forming part thereof and any supplement thereto complies in all material respects with the Securities Act and the rules and regulations thereunder, (ii) any Exchange Offer Registration Statement and any
amendment thereto does not, when it becomes effective, contain an untrue statement of a material fact or omit to state a material fact required to

  

 3 

 
be stated therein or necessary to make the statements therein not misleading and (iii) any prospectus forming part of any Exchange Offer Registration Statement, and any supplement to such
prospectus, does not include an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary in order to make the statements therein, in the light of the circumstances under which they were made,
not misleading. 
 2. Shelf Registration. If, (i) because of any change in law or in applicable interpretations
thereof by the staff of the Commission, the Company is not permitted to effect a Registered Exchange Offer, as contemplated by Section 1 hereof, (ii) the Registered Exchange Offer is not consummated within 310 days of the Issue Date,
(iii) an Initial Purchaser so requests with respect to the Initial Securities (or the Private Exchange Securities) not eligible to be exchanged for Exchange Securities in the Registered Exchange Offer and held by it following consummation of
the Registered Exchange Offer or (iv) any Holder (other than an Exchanging Dealer) is not eligible to participate in the Registered Exchange Offer or, in the case of any Holder (other than an Exchanging Dealer) that participates in the
Registered Exchange Offer, such Holder does not receive freely tradeable Exchange Securities on the date of the exchange and any such Holder so requests, the Company shall take the following actions: 
 (a) The Company shall, at its cost, as promptly as practicable (but in no event more than 60 days after so required or
requested pursuant to this Section 2) file with the Commission and thereafter shall use its reasonable best efforts to cause to be declared effective (unless it becomes effective automatically upon filing) a registration statement (the
“Shelf Registration Statement” and, together with the Exchange Offer Registration Statement, a “Registration Statement”) on an appropriate form under the Securities Act relating to the offer and sale of the Transfer Restricted
Securities (as defined in Section 6(d) hereof) by the Holders thereof from time to time in accordance with the methods of distribution set forth in the Shelf Registration Statement and Rule 415 under the Securities Act (hereinafter, the
“Shelf Registration”), it being agreed that in the case the Company is filing a Shelf Registration Statement due to (x) the occurrence of the events specified in clause (i) of this Section 2, the Company shall use its
reasonable best efforts to have such Shelf Registration Statement declared effective on or prior to the 270th day after the Issue Date or (y) the occurrence of the events specified in clause (ii), (iii) or (iv) of this Section 2,
the Company shall use its reasonable best efforts to have such Shelf Registration Statement declared effective on or prior to the 60th day after the date on which the Shelf Registration Statement is required to be filed; provided, however,
that no Holder (other than an Initial Purchaser) shall be entitled to have the Securities held by it covered by such Shelf Registration Statement unless such Holder agrees in writing to be bound by all the provisions of this Agreement applicable to
such Holder. 
 (b) The Company shall use its reasonable best efforts to keep the Shelf Registration
Statement continuously effective in order to permit the prospectus included therein to be lawfully delivered by the Holders of the relevant Securities, for a period of two years (or for such longer period if extended pursuant to Section 3(j)
below) from the Issue Date or such shorter period that will terminate when all the Securities covered by the Shelf Registration Statement (i) have been sold pursuant thereto or (ii) are no longer restricted securities (as defined in Rule
144 under the Securities Act, or any successor rule thereof). The Company shall be deemed not to have used its reasonable best efforts to keep the Shelf Registration Statement effective during the requisite period if it voluntarily takes any action
that would result in Holders of Securities covered thereby not being able to offer and sell such Securities during that period, unless such action is required by applicable law. 
 (c) Notwithstanding any other provisions of this Agreement to the contrary, the Company shall cause the Shelf
Registration Statement and the related prospectus and any amendment or supplement thereto, as of the effective date of the Shelf Registration Statement, amendment or supplement, (i) to comply in all material respects with the applicable
requirements of the Securities Act and the rules and regulations of the Commission and (ii) not to contain any

  

 4 

 
untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary in order to make the statements therein, in light of the circumstances under which
they were made, not misleading. 
 3. Registration Procedures. In connection with any Shelf Registration
contemplated by Section 2 hereof and, to the extent applicable, any Registered Exchange Offer contemplated by Section 1 hereof, the following provisions shall apply: 
 (a) The Company shall (i) furnish to the Initial Purchasers, prior to the filing thereof with the Commission, a
copy of the Registration Statement and each amendment thereof and each supplement, if any, to the prospectus included therein and, in the event that an Initial Purchaser (with respect to any portion of an unsold allotment from the original offering)
is participating in the Registered Exchange Offer or the Shelf Registration Statement, the Company shall use its best efforts to reflect in each such document, when so filed with the Commission, such comments as such Initial Purchaser reasonably may
propose; (ii) include the information set forth in Annex A hereto on the cover, in Annex B hereto in the “Exchange Offer Procedures” section and the “Purpose of the Exchange Offer” section and in Annex C hereto in the
“Plan of Distribution” section of the prospectus forming a part of the Exchange Offer Registration Statement and include the information set forth in Annex D hereto in the Letter of Transmittal delivered pursuant to the Registered Exchange
Offer; (iii) if requested by an Initial Purchaser, include the information required by Items 507 or 508 of Regulation S-K under the Securities Act, as applicable, in the prospectus forming a part of the Exchange Offer Registration Statement;
(iv) include within the prospectus contained in the Exchange Offer Registration Statement a section entitled “Plan of Distribution,” reasonably acceptable to the Initial Purchasers, which shall contain a summary statement of the
positions taken or policies made by the staff of the Commission with respect to the potential “underwriter” status of any broker-dealer that is the beneficial owner (as defined in Rule 13d-3 under the Securities Exchange Act of 1934, as
amended (the “Exchange Act”)) of Exchange Securities received by such broker-dealer in the Registered Exchange Offer (a “Participating Broker-Dealer”), whether such positions or policies have been publicly disseminated by the
staff of the Commission or such positions or policies, in the reasonable judgment of the Initial Purchasers based upon advice of counsel (which may be in-house counsel), represent the prevailing views of the staff of the Commission; and (v) in
the case of a Shelf Registration Statement, include in the prospectus included in the Shelf Registration Statement (or, if permitted by Commission Rule 430B(b), in a prospectus supplement that becomes a part thereof pursuant to Commission
Rule 430B(f)) that is delivered to any Holder pursuant to Section 3(d) and (f), the names of the Holders, who propose to sell Securities pursuant to the Shelf Registration Statement, as selling security holders. 
 (b) The Company shall give written notice to the Initial Purchasers, the Holders and any Participating Broker-Dealer
from whom the Company has received prior written notice that it will be a Participating Broker-Dealer in the Registered Exchange Offer (which notice pursuant to clauses (ii)-(v) hereof shall be accompanied by an instruction to suspend the use
of the prospectus until the requisite changes have been made): 
 (i) when the Registration Statement or
any amendment thereto has been filed with the Commission and when the Registration Statement or any post-effective amendment thereto has become effective; 
 (ii) of any request by the Commission for amendments or supplements to the Registration Statement or the prospectus included therein or for additional information; 
 (iii) of the issuance by the Commission of any stop order suspending the effectiveness of the Registration Statement or
the initiation of any proceedings for that purpose, of the issuance by the Commission of a notification of objection to the use of the

  

 5 

 
form on which the Registration Statement has been filed, and of the happening of any event that causes the Company to become an “ineligible issuer,” as defined in Commission
Rule 405; 
 (iv) of the receipt by the Company or its legal counsel of any notification with respect
to the suspension of the qualification of the Securities for sale in any jurisdiction or the initiation or threatening of any proceeding for such purpose; and 
 (v) of the happening of any event that requires the Company to make changes in the Registration Statement or the
prospectus in order that the Registration Statement or the prospectus do not contain an untrue statement of a material fact nor omit to state a material fact required to be stated therein or necessary to make the statements therein (in the case of
the prospectus, in light of the circumstances under which they were made) not misleading. 
 (c) The
Company shall make every reasonable effort to obtain the withdrawal at the earliest possible time, of any order suspending the effectiveness of the Registration Statement. 
 (d) The Company shall furnish to each Holder of Securities included within the coverage of the Shelf Registration,
without charge, at least one copy of the Shelf Registration Statement and any post-effective amendment or supplement thereto, including financial statements and schedules, and, if the Holder so requests in writing, all exhibits thereto (including
those, if any, incorporated by reference). The Company shall not, without the prior consent of the Initial Purchasers, make any offer relating to the Securities that would constitute a “free writing prospectus,” as defined in Commission
Rule 405. 
 (e) The Company shall deliver to each Exchanging Dealer and each Initial Purchaser, and
to any other Holder who so requests in writing, without charge, at least one copy of the Exchange Offer Registration Statement and any post-effective amendment thereto, including financial statements and schedules, and, if an Initial Purchaser or
any such Holder so requests, all exhibits thereto (including those incorporated by reference). 
 (f) The
Company shall, during the period of effectiveness of the Shelf Registration Statement, deliver to each Holder of Securities included within the coverage of the Shelf Registration, without charge, as many copies of the prospectus (including each
preliminary prospectus) included in the Shelf Registration Statement and any amendment or supplement thereto as such person may reasonably request in writing. The Company consents, subject to the provisions of this Agreement, to the use of the
prospectus or any amendment or supplement thereto by each of the selling Holders in connection with the offering and sale of the Securities covered by the prospectus, or any amendment or supplement thereto, included in the Shelf Registration
Statement. 
 (g) The Company shall deliver to each Initial Purchaser, any Exchanging Dealer, any
Participating Broker-Dealer and such other persons required to deliver a prospectus following the Registered Exchange Offer, without charge, as many copies of the final prospectus included in the Exchange Offer Registration Statement and any
amendment or supplement thereto as such persons may reasonably request. The Company consents, subject to the provisions of this Agreement, to the use of the prospectus or any amendment or supplement thereto by the Initial Purchasers, if necessary,
any Participating Broker-Dealer and such other persons required to deliver a prospectus following the Registered Exchange Offer in connection with the offering and sale of the Exchange Securities covered by the prospectus, or any amendment or
supplement thereto, included in such Exchange Offer Registration Statement. 
  

 6 

 (h) Prior to any public offering of the Securities pursuant to any
Registration Statement, the Company shall register or qualify or cooperate with the Holders of the Securities included therein and their respective counsel in connection with the registration or qualification of the Securities for offer and sale
under the securities or “blue sky” laws of such states of the United States as any Holder reasonably requests in writing and do any and all other acts or things reasonably necessary or advisable to enable the offer and sale in such
jurisdictions of the Securities covered by such Registration Statement; provided, however, that the Company shall not be required to file any general consent to service of process or to qualify as a foreign corporation or as a dealer in
securities in any jurisdiction in which it is not so qualified as of the date hereof or to subject itself to taxation in respect of doing business in any jurisdiction in which it is not otherwise subject as of the date hereof. 
 (i) The Company shall cooperate with the Holders to facilitate the timely preparation and delivery of certificates
representing the Securities to be sold pursuant to any Registration Statement free of any restrictive legends and in such denominations and registered in such names as the Holders may request a reasonable period of time prior to sales of the
Securities pursuant to such Registration Statement. 
 (j) Upon the occurrence of any event contemplated by
paragraphs (ii) through (v) of Section 3(b) above during the period for which the Company is required to maintain an effective Registration Statement, the Company shall promptly prepare and file a post-effective amendment to the
Registration Statement or a supplement to the related prospectus and any other required document so that, as thereafter delivered to Holders or purchasers of Securities, the prospectus will not contain an untrue statement of a material fact or omit
to state any material fact required to be stated therein or necessary to make the statements therein, in light of the circumstances under which they were made, not misleading. If the Company notifies the Initial Purchasers, the Holders and any known
Participating Broker-Dealer in accordance with paragraphs (ii) through (v) of Section 3(b) above to suspend the use of the prospectus until the requisite changes to the prospectus have been made, then the Initial Purchasers, the
Holders and any such Participating Broker-Dealers shall suspend use of such prospectus, and the period of effectiveness of the Shelf Registration Statement provided for in Section 2(b) above and the Exchange Offer Registration Statement
provided for in Section 1 above shall each be extended by the number of days from and including the date of the giving of such notice to and including the date when the Initial Purchasers, the Holders and any known Participating Broker-Dealer
shall have received such amended or supplemented prospectus pursuant to this Section 3(j). During the period during which the Company is required to maintain an effective Shelf Registration Statement pursuant to this Agreement, the Company will
prior to the three-year expiration of that Shelf Registration Statement file, and use its reasonable best efforts to cause to be declared effective (unless it becomes effective automatically upon filing) within a period that avoids any interruption
in the ability of Holders of Securities covered by the expiring Shelf Registration Statement to make registered dispositions, a new registration statement relating to the Securities, which shall be deemed the “Shelf Registration Statement”
for purposes of this Agreement. 
 (k) Not later than the effective date of the applicable Registration
Statement, the Company will provide a CUSIP number for the Initial Securities, the Exchange Securities or the Private Exchange Securities, as the case may be, and provide the applicable trustee with printed certificates for the Initial Securities,
the Exchange Securities or the Private Exchange Securities, as the case may be, in a form eligible for deposit with The Depository Trust Company. 
 (l) The Company will comply in all material respects with all rules and regulations of the Commission to the extent and so long as they are applicable to the Registered Exchange Offer or the Shelf
Registration and will make generally available to its security holders (or otherwise provide in accordance with Section 11(a) of the Securities Act) an earnings statement satisfying the provisions of Section 11(a) of the Securities Act, no
later than 45 days after the end of a

  

 7 

 
12-month period (or 90 days, if such period is a fiscal year) beginning with the first month of the Company’s first fiscal quarter commencing after the effective date of the Registration
Statement, which statement shall cover such 12-month period. 
 (m) The Company shall cause the Indenture
to be qualified under the Trust Indenture Act of 1939, as amended, in a timely manner and containing such changes, if any, as shall be necessary for such qualification. In the event that such qualification would require the appointment of a new
trustee under the Indenture, the Company shall appoint a new trustee thereunder pursuant to the applicable provisions of the Indenture. 
 (n) The Company may require each Holder of Securities to be sold pursuant to the Shelf Registration Statement to furnish to the Company such information regarding the Holder and the distribution of
the Securities as the Company may from time to time reasonably require for inclusion in the Shelf Registration Statement, and the Company may exclude from such registration the Securities of any Holder that unreasonably fails to furnish such
information within a reasonable time after receiving such request. 
 (o) The Company shall enter into such
customary agreements (including, if requested, an underwriting agreement in customary form) and take all such other action, if any, as any Holder shall reasonably request in order to facilitate the disposition of the Securities pursuant to any Shelf
Registration. 
 (p) In the case of any Shelf Registration, the Company shall (i) make reasonably
available for inspection by the Holders, any underwriter participating in any disposition pursuant to the Shelf Registration Statement and any attorney, accountant or other agent retained by the Holders or any such underwriter all relevant financial
and other records, pertinent corporate documents and properties of the Company and (ii) cause the Company’s officers, directors, employees, accountants and auditors to supply all relevant information reasonably requested by the Holders or
any such underwriter, attorney, accountant or agent in connection with the Shelf Registration Statement, in each case, as shall be reasonably necessary to enable such persons, to conduct a reasonable investigation within the meaning of
Section 11 of the Securities Act; provided, however, that the foregoing inspection and information gathering shall be coordinated on behalf of the Initial Purchasers by you and on behalf of the other parties, by one counsel designated by
and on behalf of such other parties as described in Section 4 hereof. 
 (q) In the case of any Shelf
Registration, the Company, if requested by any Holder of Securities covered thereby, shall cause (i) its counsel to deliver an opinion and updates thereof relating to the Securities in customary form addressed to such Holders and the managing
underwriters, if any, thereof and dated, in the case of the initial opinion, the effective date of such Shelf Registration Statement (it being agreed that the matters to be covered by such opinion shall include, without limitation, the due
incorporation and good standing of the Company; the qualification of the Company to transact business as foreign corporations; the due authorization, execution and delivery of the relevant agreement of the type referred to in Section 3(o)
hereof; the due authorization, execution, authentication and issuance, and the validity and enforceability, of the applicable Securities; the absence of material legal or governmental proceedings involving the Company; the absence of governmental
approvals required to be obtained in connection with the Shelf Registration Statement, the offering and sale of the applicable Securities, or any agreement of the type referred to in Section 3(o) hereof; the compliance in all material respects,
as to form of such Shelf Registration Statement and any documents incorporated by reference therein and of the Indenture with the requirements of the Securities Act and the Trust Indenture Act, respectively; and (A) as of the date of the
opinion and as of the effective date of the Shelf Registration Statement or most recent post-effective amendment thereto, as the case may be, the absence, to the knowledge of such counsel, from such Shelf Registration Statement and the prospectus
included therein, as then amended or supplemented, and from any documents incorporated by reference

  

 8 

 
therein and (B) as of an applicable time identified by such Holders or managing underwriters, the absence, to the knowledge of such counsel, from such prospectus taken together with any
other documents identified by such Holders or managing underwriters, in the case of (A) and (B), of an untrue statement of a material fact or the omission to state therein a material fact required to be stated therein or necessary to make
the statements therein not misleading (in the case of any such documents, in the light of the circumstances existing at the time that such documents were filed with the Commission under the Exchange Act); (ii) its officers to execute and
deliver all customary documents and certificates and updates thereof reasonably requested by any underwriters of the applicable Securities and (iii) its independent public accountants and the independent public accountants with respect to any
other entity for which financial information is provided in the Shelf Registration Statement to provide to the selling Holders of the applicable Securities and any underwriter therefor a comfort letter in customary form and covering matters of the
type customarily covered in comfort letters in connection with primary underwritten offerings, subject to receipt of appropriate documentation as contemplated, and only if permitted, by Statement of Auditing Standards No. 72. 
 (r) In the case of the Registered Exchange Offer, if requested by an Initial Purchaser or any known Participating
Broker-Dealer, the Company shall cause (i) its counsel to deliver to the Initial Purchaser or such Participating Broker-Dealer a signed opinion in the form set forth in Section 7(c) of the Purchase Agreement with such changes as are
customary in connection with the preparation of a Registration Statement and (ii) its independent public accountants and the independent public accountants with respect to any other entity for which financial information is provided in the
Registration Statement to deliver to such Initial Purchaser or such Participating Broker-Dealer a comfort letter, in customary form, meeting the requirements as to the substance thereof as set forth in Section 7(a) of the Purchase Agreement,
with appropriate date changes. 
 (s) If a Registered Exchange Offer or a Private Exchange is to be
consummated, upon delivery of the Initial Securities by Holders to the Company (or to such other Person as directed by the Company) in exchange for the Exchange Securities or the Private Exchange Securities, as the case may be, the Company shall
mark, or cause to be marked, on the Initial Securities so exchanged that such Initial Securities are being canceled in exchange for the Exchange Securities or the Private Exchange Securities, as the case may be; in no event shall the Initial
Securities be marked as paid or otherwise satisfied. 
 (t) The Company will use its reasonable best
efforts to (a) if the Initial Securities have been rated prior to the initial sale of such Initial Securities, confirm such ratings will apply to the Securities covered by a Registration Statement or (b) if the Initial Securities were not
previously rated, cause the Securities covered by a Registration Statement to be rated with the appropriate rating agencies, if so requested by Holders of a majority in aggregate principal amount of Securities covered by such Registration Statement,
or by the managing underwriters, if any. 
 (u) In the event that any broker-dealer registered under the
Exchange Act shall underwrite any Securities or participate as a member of an underwriting syndicate or selling group or “assist in the distribution” (within the meaning of the Conduct Rules (the “Rules”) of the Financial
Industry Regulatory Authority, Inc. (“FINRA”)) thereof, whether as a Holder of such Securities or as an underwriter, a placement or sales agent or a broker or dealer in respect thereof, or otherwise, the Company will assist such
broker-dealer in complying with the requirements of such Rules, including, without limitation, by (i) if such Rules, including Rule 2720, shall so require, engaging a “qualified independent underwriter” (as defined in Rule 2720) to
participate in the preparation of the Registration Statement relating to such Securities, to exercise usual standards of due diligence in respect thereto and, if any portion of the offering contemplated by such Registration Statement is an
underwritten offering or is made through a placement or sales agent, to recommend the yield of such Securities, (ii) indemnifying any such qualified independent underwriter to the extent of the indemnification of underwriters provided in
Section 5 hereof and (iii) providing such information to such broker-dealer as may be required in order for such broker-dealer to comply with the requirements of the Rules. 
  

 9 

 (v) The Company shall use its reasonable best efforts to take all other
steps necessary to effect the registration of the Securities covered by a Registration Statement contemplated hereby. 
 4. Registration Expenses. The Company shall bear all fees and expenses incurred by it in connection with the performance of its obligations under Sections 1 through 3 hereof and shall also pay the reasonable fees and expenses,
if any, of Cravath, Swaine & Moore LLP, counsel for the Initial Purchasers, incurred in connection with the Registered Exchange Offer, whether or not the Registered Exchange Offer is filed or becomes effective, and, in the event a Shelf
Registration Statement is required to be filed hereunder, shall bear or reimburse the Holders of the Securities covered thereby for the reasonable fees and disbursements of one firm of counsel designated by the Holders of a majority in principal
amount of the Initial Securities covered thereby to act as counsel for the Holders of the Initial Securities in connection therewith. 
 5. Indemnification. (a) The Company agrees to indemnify and hold harmless each Holder, any Participating Broker-Dealer and each person, if any, who controls such Holder or such Participating Broker-Dealer within the meaning
of the Securities Act or the Exchange Act (each Holder, any Participating Broker-Dealer and such controlling persons are referred to collectively as the “Indemnified Parties” and individually as an “Indemnified Party”) from and
against any losses, claims, damages or liabilities, joint or several, or any actions in respect thereof (including, but not limited to, any losses, claims, damages, liabilities or actions relating to purchases and sales of the Securities) to which
each Indemnified Party may become subject under the Securities Act, the Exchange Act or otherwise, insofar as such losses, claims, damages, liabilities or actions arise out of or are based upon any untrue statement or alleged untrue statement of a
material fact contained in a Registration Statement or prospectus or in any amendment or supplement thereto or in any preliminary prospectus or “issuer free writing prospectus,” as defined in Commission Rule 433 (“Issuer
FWP”), relating to a Shelf Registration, or arise out of, or are based upon, the omission or alleged omission to state therein a material fact required to be stated therein or necessary to make the statements therein not misleading, and shall
reimburse, as incurred, the Indemnified Parties for any legal or other expenses reasonably incurred by them in connection with investigating or defending any such loss, claim, damage, liability or action in respect thereof; provided, however,
that (i) the Company shall not be liable in any such case to the extent that such loss, claim, damage or liability arises out of or is based upon any untrue statement or alleged untrue statement or omission or alleged omission made in a
Registration Statement or prospectus or in any amendment or supplement thereto or in any preliminary prospectus or Issuer FWP relating to a Shelf Registration in reliance upon and in conformity with written information pertaining to such Holder and
furnished to the Company by or on behalf of such Holder specifically for inclusion therein and (ii) with respect to any untrue statement or omission or alleged untrue statement or omission made in any preliminary prospectus relating to a Shelf
Registration Statement, the indemnity agreement contained in this subsection (a) shall not inure to the benefit of any Holder or Participating Broker-Dealer from whom the person asserting any such losses, claims, damages or liabilities
purchased the Securities concerned, to the extent that a prospectus relating to such Securities was required to be delivered (including through satisfaction of the conditions of Commission Rule 172) by such Holder or Participating Broker-Dealer
under the Securities Act in connection with such purchase and any such loss, claim, damage or liability of such Holder or Participating Broker-Dealer results from the fact that there was not conveyed to such person, at or prior to the time of the
sale of such Securities to such person, an amended or supplemented prospectus or, if permitted by Section 3(d), an Issuer FWP correcting such untrue statement or omission or alleged untrue statement or omission if the Company had previously
furnished copies thereof to such Holder or Participating Broker-Dealer; provided further, however, that this indemnity agreement will be in addition to any liability which the Company may otherwise have to such Indemnified Party. The Company
shall also indemnify underwriters, their officers and directors and each person who controls such underwriters within the meaning of the Securities Act or the Exchange Act to the same extent as provided above with respect to the indemnification of
the Holders if requested by such Holders. 
  

 10 

 (b) Each Holder, severally and not jointly, will indemnify and hold harmless the
Company and each person, if any, who controls the Company within the meaning of the Securities Act or the Exchange Act from and against any losses, claims, damages or liabilities or any actions in respect thereof, to which the Company or any such
controlling person may become subject under the Securities Act, the Exchange Act or otherwise, insofar as such losses, claims, damages, liabilities or actions arise out of or are based upon any untrue statement or alleged untrue statement of a
material fact contained in a Registration Statement or prospectus or in any amendment or supplement thereto or in any preliminary prospectus or Issuer FWP relating to a Shelf Registration, or arise out of or are based upon the omission or alleged
omission to state therein a material fact necessary to make the statements therein not misleading, but in each case only to the extent that the untrue statement or omission or alleged untrue statement or omission was made in reliance upon and in
conformity with written information pertaining to such Holder and furnished to the Company by or on behalf of such Holder specifically for inclusion therein; and, subject to the limitation set forth immediately preceding this clause, shall
reimburse, as incurred, the Company for any legal or other expenses reasonably incurred by the Company or any such controlling person in connection with investigating or defending any loss, claim, damage, liability or action in respect thereof. This
indemnity agreement will be in addition to any liability which such Holder may otherwise have to the Company or any of its controlling persons. 
 (c) Promptly after receipt by an Indemnified Party under this Section 5 of notice of the commencement of any action or proceeding (including a governmental investigation), such Indemnified Party
will, if a claim in respect thereof is to be made against the indemnifying party under this Section 5, notify the indemnifying party of the commencement thereof; but the failure to notify the indemnifying party shall not relieve the
indemnifying party from any liability that it may have under subsection (a) or (b) above except to the extent that it has been materially prejudiced (through the forfeiture of substantive rights or defenses) by such failure; provided,
however, that the failure to notify the indemnifying party shall not relieve it from any liability that it may have to an Indemnified Party otherwise than under subsection (a) or (b) above. In case any such action is brought against
any Indemnified Party, and it notifies the indemnifying party of the commencement thereof, the indemnifying party will be entitled to participate therein and, to the extent that it may wish, jointly with any other indemnifying party similarly
notified, to assume the defense thereof, with counsel reasonably satisfactory to such Indemnified Party (who shall not, except with the consent of the Indemnified Party, be counsel to the indemnifying party), and after notice from the indemnifying
party to such Indemnified Party of its election so to assume the defense thereof, the indemnifying party will not be liable to such Indemnified Party under this Section 5 for any legal or other expenses, other than reasonable costs of
investigation, subsequently incurred by such Indemnified Party in connection with the defense thereof. No indemnifying party shall, without the prior written consent of the Indemnified Party, effect any settlement of any pending or threatened action
in respect of which any Indemnified Party is or could have been a party and indemnity could have been sought hereunder by such Indemnified Party unless such settlement (i) includes an unconditional release of such Indemnified Party from all
liability on any claims that are the subject matter of such action and (ii) does not include a statement as to or an admission of fault, culpability or a failure to act by or on behalf of any Indemnified Party. 
 (d) If the indemnification provided for in this Section 5 is unavailable or insufficient to hold harmless an Indemnified Party
under subsections (a) or (b) above, then each indemnifying party shall contribute to the amount paid or payable by such Indemnified Party as a result of the losses, claims, damages or liabilities (or actions in respect thereof) referred to
in subsection (a) or (b) above (i) in such proportion as is appropriate to reflect the relative benefits received by the indemnifying party or parties on the one hand and the Indemnified Party on the other from the exchange of the
Securities, pursuant to the Registered Exchange Offer, or (ii) if the allocation provided by the foregoing clause (i) is not permitted by applicable law, in such proportion as is appropriate to reflect not only the relative benefits
referred to in clause (i) above but also the relative fault of the indemnifying party or parties on the one hand and the Indemnified Party on the other in connection with the statements or omissions that resulted in such losses, claims, damages
or liabilities (or actions in respect thereof) as well as any other relevant equitable

  

 11 

 
considerations. The relative fault of the parties shall be determined by reference to, among other things, whether the untrue or alleged untrue statement of a material fact or the omission or
alleged omission to state a material fact relates to information supplied by the Company on the one hand or such Holder or such other Indemnified Party, as the case may be, on the other, and the parties’ relative intent, knowledge, access to
information and opportunity to correct or prevent such statement or omission. The amount paid by an Indemnified Party as a result of the losses, claims, damages or liabilities referred to in the first sentence of this subsection (d) shall be
deemed to include any legal or other expenses reasonably incurred by such Indemnified Party in connection with investigating or defending any action or claim which is the subject of this subsection (d). Notwithstanding any other provision of this
Section 5(d), the Holders shall not be required to contribute any amount in excess of the amount by which the net proceeds received by such Holders from the sale of the Securities pursuant to a Registration Statement exceeds the amount of
damages which such Holders have otherwise been required to pay by reason of such untrue or alleged untrue statement or omission or alleged omission. No person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the
Securities Act) shall be entitled to contribution from any person who was not guilty of such fraudulent misrepresentation. For purposes of this paragraph (d), each person, if any, who controls such Indemnified Party within the meaning of the
Securities Act or the Exchange Act shall have the same rights to contribution as such Indemnified Party and each person, if any, who controls the Company within the meaning of the Securities Act or the Exchange Act shall have the same rights to
contribution as the Company. 
 (e) The agreements contained in this Section 5 shall survive the sale of the
Securities pursuant to a Registration Statement and shall remain in full force and effect, regardless of any termination or cancellation of this Agreement or any investigation made by or on behalf of any Indemnified Party. 
 6. Additional Interest Under Certain Circumstances. (a) Additional interest (the “Additional Interest”) with
respect to the Transfer Restricted Securities shall be assessed as follows if any of the following events occur (each such event in clauses (i) through (v) below a “Registration Default”): 
 (i) on or prior to April 6, 2010, the Exchange Offer Registration Statement has not been filed with the Commission;

 (ii) the Company is required to file a Shelf Registration Statement pursuant to the terms of
Section 2(a) above, the Shelf Registration Statement has not been filed with the Commission on or prior to the 60th day after the date on which the obligation to file such Shelf Registration Statement arises, determined in accordance with the
terms of Section 2(a) above; 
 (iii) on or prior to July 5, 2010, neither the Registered Exchange
Offer nor, if required in lieu thereof, the Shelf Registration Statement, is declared effective by the Commission; 
 (iv) the Exchange Offer is not consummated on or before the 40th day after the Exchange Offer Registration Statement is declared effective, or, if obligated to file a Shelf Registration Statement pursuant to the terms of Section 2(a)
above, the Shelf Registration Statement is not declared effective on or prior to the 60th day after the date of the filing of the Shelf Registration Statement; or 
 (v) after either the Exchange Offer Registration Statement or the Shelf Registration Statement is declared (or becomes
automatically) effective (A) such Registration Statement thereafter ceases to be effective; or (B) such Registration Statement or the related prospectus ceases to be usable (except as permitted in paragraph (b) immediately below) in
connection with resales of Transfer Restricted Securities during the periods specified herein because either (1) any event occurs as a result of which the related prospectus forming part of such Registration Statement would include any untrue
statement of a material fact or omit to state any material fact necessary to make the statements therein in the light of the circumstances under which they were made not misleading, (2) it shall be necessary to amend such Registration Statement
or

  

 12 

 
supplement the related prospectus, to comply with the Securities Act or the Exchange Act or the respective rules thereunder or (3) such Registration Statement is a Shelf Registration
Statement that has expired before a replacement Shelf Registration Statement has become effective. 
 Additional Interest shall accrue on the
Transfer Restricted Securities over and above the interest set forth in the title of the Securities from and including the date on which any such Registration Default shall occur to but excluding the date on which all such Registration Defaults have
been cured, at a rate of $0.05 per week per $1,000 principal amount of the Transfer Restricted Securities for the first 90-day period immediately following the occurrence of a Registration Default, and such rate will increase by an additional $0.05
per week per $1,000 principal amount of the Transfer Restricted Securities with respect to each subsequent 90-day period until all Registration Defaults have been cured, up to a maximum additional interest rate of 1.0% per annum. 
 (b) A Registration Default referred to in Section 6(a)(v)(B) hereof shall be deemed not to have occurred and be continuing in
relation to a Shelf Registration Statement or the related prospectus if (i) such Registration Default has occurred solely as a result of (x) the filing of a post-effective amendment to such Shelf Registration Statement to incorporate
annual audited financial information with respect to the Company where such post-effective amendment is not yet effective and needs to be declared effective to permit Holders to use the related prospectus or (y) other material events with
respect to the Company that would need to be described in such Shelf Registration Statement or the related prospectus and (ii) in the case of clause (y), the Company is proceeding promptly and in good faith to amend or supplement such Shelf
Registration Statement and related prospectus to describe such material events; provided, however, that in any case if such Registration Default occurs for a continuous period in excess of 30 days, Additional Interest shall be payable in
accordance with the above paragraph from the day such Registration Default occurs until such Registration Default is cured. 
 (c) Any amounts of Additional Interest due pursuant to clause (i), (ii), (iii), (iv) or (v) of Section 6(a) above will be payable in cash on the regular interest payment dates with respect to the Transfer Restricted
Securities. The amount of Additional Interest will be determined on the basis of the number of days that Additional Interest is payable hereunder and on the basis of a 360-day year comprised of twelve 30-day months. 
 (d) “Transfer Restricted Securities” means each Security until (i) the date on which such Transfer Restricted Security has
been exchanged by a person other than a broker-dealer for a freely transferable Exchange Security in the Registered Exchange Offer, (ii) following the exchange by a broker-dealer in the Registered Exchange Offer of an Initial Security for an
Exchange Security, the date on which such Exchange Security is sold to a purchaser who receives from such broker-dealer on or prior to the date of such sale a copy of the prospectus contained in the Exchange Offer Registration Statement or
(iii) the date on which such Transfer Restricted Security has been effectively registered under the Securities Act and disposed of in accordance with the Shelf Registration Statement. 
 7. Rules 144 and 144A. So long as it is required to do so by the Indenture, the Company shall use its reasonable best
efforts to file the reports required to be filed by it under the Securities Act and the Exchange Act in a timely manner and, if at any time the Company is not required to file such reports, it will, upon the request of any Holder of Initial
Securities, make publicly available other information so long as necessary to permit sales of their securities pursuant to Rules 144 and 144A. The Company covenants that it will take such further action as any Holder of Initial Securities may
reasonably request, all to the extent required from time to time to enable such Holder to sell Initial Securities without registration under the Securities Act within the limitation of the exemptions provided by Rules 144 and 144A (including
the requirements of Rule 144A(d)(4)). The Company will provide a copy of this Agreement to prospective purchasers of Initial Securities identified to the Company by the Initial Purchasers upon written request. Upon the written request of any
Holder of Initial Securities, the Company shall deliver to such Holder a written statement as to whether it has complied with such requirements. Notwithstanding the foregoing, nothing in this Section 7 shall be deemed to require the Company to
register any of its securities pursuant to the Exchange Act. 
  

 13 

 8. Underwritten Registrations. If any of the Transfer Restricted Securities
covered by any Shelf Registration are to be sold in an underwritten offering, the investment banker or investment bankers and manager or managers that will administer the offering will be selected by the Holders of a majority in aggregate principal
amount of such Transfer Restricted Securities to be included in such offering. 
 No person may participate in any underwritten
registration hereunder unless such person (i) agrees to sell such person’s Transfer Restricted Securities on the basis reasonably provided in any underwriting arrangements approved by the persons entitled hereunder to approve such
arrangements and (ii) completes and executes all questionnaires, powers of attorney, indemnities, underwriting agreements and other documents reasonably required under the terms of such underwriting arrangements. 
 9. Miscellaneous. 
 (a) Amendments and Waivers. The provisions of this Agreement may not be amended, modified or supplemented, and waivers or consents to departures from the provisions hereof may not be
given, except by the Company and the written consent of the Holders of a majority in principal amount of the Securities affected by such amendment, modification, supplement, waiver or consents. 
 (b) Notices. All notices and other communications provided for or permitted hereunder shall be made in writing by hand
delivery, first-class mail, facsimile transmission or air courier which guarantees overnight delivery: 
 (1) if to a Holder, at
the most current address given by such Holder to the Company. 
 (2) if to the Initial Purchasers: 
 Credit Suisse Securities (USA) LLC 
 Eleven Madison Avenue 
 New York, NY 10010-3629 
 Fax No.: (212) 325-4296 
 Attention: LCD-IBD 
 with a copy (without constituting notice) to: 
 Cravath, Swaine & Moore LLP 
 Worldwide Plaza 
 825 Eighth Avenue 
 New York, NY 10019 
 Fax No.: (212) 474-3700 
 Attention: William J. Whelan, III, Esq. 
 (3) if to the Company, at its address as follows: 
 TransDigm Inc. 
 1301 East 9th Street, Suite 3710 
 Cleveland, OH 44114 
 Fax No.: (216) 706-2937 
 Attention: Chief Financial Officer 
  

 14 

 with a copy (without constituting notice) to: 
 Latham & Watkins LLP 
 885 Third Avenue 
 New York, NY 10022 
 Fax No.: 212-751-4864 
 Attention: Steven Della Rocca, Esq. 
 All such notices and communications shall be deemed to have been duly given: at
the time delivered by hand, if personally delivered; three business days after being deposited in the mail, postage prepaid, if mailed; when receipt is acknowledged by recipient’s facsimile machine operator, if sent by facsimile transmission;
and on the day delivered, if sent by overnight air courier guaranteeing next day delivery. 
 (c) No Inconsistent
Agreements. The Company has not, as of the date hereof, entered into, nor shall it, on or after the date hereof, enter into, any agreement with respect to its securities that is inconsistent with the rights granted to the Holders herein or
otherwise conflicts with the provisions hereof. 
 (d) Successors and Assigns. This Agreement shall be binding
upon the Company and its successors and assigns. 
 (e) Counterparts. This Agreement may be executed in any
number of counterparts and by the parties hereto in separate counterparts (including by facsimile or electronic image scan), each of which when so executed shall be deemed to be an original and all of which taken together shall constitute one and
the same agreement. 
 (f) Headings. The headings in this Agreement are for convenience of reference only and
shall not limit or otherwise affect the meaning hereof. 
 (g) Governing Law. THIS AGREEMENT SHALL BE GOVERNED
BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK, WITHOUT REGARD TO PRINCIPLES OF CONFLICTS OF LAWS OF SUCH STATE OTHER THAN SECTION 5-1401 OF THE NEW YORK GENERAL OBLIGATIONS LAW. 
 (h) Severability. If any one or more of the provisions contained herein, or the application thereof in any circumstance, is
held invalid, illegal or unenforceable, the validity, legality and enforceability of any such provision in every other respect and of the remaining provisions contained herein shall not be affected or impaired thereby. 
 (i) Securities Held by the Company. Whenever the consent or approval of Holders of a specified percentage of principal
amount of Securities is required hereunder, Securities held by the Company or its affiliates (other than subsequent Holders of Securities if such subsequent Holders are deemed to be affiliates solely by reason of their holdings of such Securities)
shall not be counted in determining whether such consent or approval was given by the Holders of such required percentage. 
  

 15 

 If the foregoing is in accordance with your understanding of our agreement, please sign and
return to the Company a counterpart hereof, whereupon this instrument, along with all counterparts, will become a binding agreement among the several Initial Purchasers and the Company in accordance with its terms. 
  

					
	Very truly yours,
	
	TransDigm Inc.
		
	By:	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Executive Vice President, Chief Financial
		 		 	Officer and Assistant Secretary
	
	TransDigm Group Incorporated
		
	By:	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Executive Vice President, Chief Financial
		 		 	Officer and Assistant Secretary
	
	Avionic Instruments LLC
		
	By:	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Assistant Secretary and Treasurer
	
	Skurka Aerospace Inc.
		
	By:	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Assistant Secretary and Treasurer
	
	AeroControlex Group, Inc.
		
	By:	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Assistant and Treasurer
	
	Champion Aerospace LLC
		
	By:	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Assistant Secretary and Treasurer
	
	MarathonNorco Aerospace, Inc.
		
	By:	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Secretary and Treasurer

  

 16 

					
	Aviation Technologies, Inc.
		
	By:	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Secretary and Treasurer
	
	Adams Rite Aerospace, Inc.
		
	By:	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Assistant Secretary and Treasurer
	
	Avtech Corporation
		
	By:	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Secretary and Treasurer
	
	Transicoil LLC
		
	By:	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Secretary and Treasurer
	
	CDA InterCorp LLC
		
	By:	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Secretary and Treasurer
	
	Malaysian Aerospace Services, Inc.
		
	By:	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Secretary and Treasurer
	
	Bruce Aerospace, Inc.
		
	By:	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Secretary and Treasurer
	
	CEF Industries, LLC
		
	By:	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Secretary and Treasurer
	
	Aircraft Parts Corporation
		
	By:	 	 /s/ Gregory Rufus

		 	Name:	 	Gregory Rufus
		 	Title:	 	Secretary and Treasurer

  

 17 

	
	The foregoing Registration

  

					
	Rights Agreement is hereby confirmed and accepted as of the date first above written.
	
	Credit Suisse Securities (USA) LLC
		
	By:	 	 /s/ Edward L. Neuburg

		 	Name:	 	Edward L. Neuburg
		 	Title:	 	Managing Director
	
	For itself and on behalf of the several Initial Purchasers set forth in Schedule II hereto

  

 18 

 ANNEX A 
 Each broker-dealer that receives Exchange Securities for its own account pursuant to the Exchange Offer must acknowledge that it will deliver a prospectus in connection with any resale of such Exchange
Securities. The Letter of Transmittal states that, by so acknowledging and by delivering a prospectus, a broker-dealer will not be deemed to admit that it is an “underwriter” within the meaning of the Securities Act. This Prospectus, as it
may be amended or supplemented from time to time, may be used by a broker-dealer in connection with resales of Exchange Securities received in exchange for Initial Securities where such Initial Securities were acquired by such broker-dealer as a
result of market-making activities or other trading activities. The Company has agreed that, for a period of 180 days after the Expiration Date (as defined herein), it will make this Prospectus available to any broker-dealer for use in connection
with any such resale. See “Plan of Distribution.” 

 ANNEX B 
 Each broker-dealer that receives Exchange Securities for its own account in exchange for Initial Securities, where such Initial Securities were acquired by such broker-dealer as a result of market-making
activities or other trading activities, must acknowledge that it will deliver a prospectus in connection with any resale of such Exchange Securities. See “Plan of Distribution.” 

 ANNEX C 
 PLAN OF DISTRIBUTION 
 Each broker-dealer that receives
Exchange Securities for its own account pursuant to the Exchange Offer must acknowledge that it will deliver a Prospectus in connection with any resale of such Exchange Securities. This Prospectus, as it may be amended or supplemented from time to
time, may be used by a broker-dealer in connection with resales of Exchange Securities received in exchange for Initial Securities where such Initial Securities were acquired as a result of market-making activities or other trading activities. The
Company has agreed that, for a period of 180 days after the Expiration Date, it will make this prospectus, as amended or supplemented, available to any broker-dealer for use in connection with any such resale. In addition, until
[                ], 20[    ], all dealers effecting transactions in the Exchange Securities may be required to deliver a prospectus.(1) 
 The Company will not receive any proceeds from any sale of Exchange Securities by broker-dealers. Exchange Securities received by broker-dealers for their own account pursuant to the Exchange Offer may be sold from time to time in one or
more transactions in the over-the-counter market, in negotiated transactions, through the writing of options on the Exchange Securities or a combination of such methods of resale, at market prices prevailing at the time of resale, at prices related
to such prevailing market prices or negotiated prices. Any such resale may be made directly to purchasers or to or through brokers or dealers who may receive compensation in the form of commissions or concessions from any such broker-dealer or the
purchasers of any such Exchange Securities. Any broker-dealer that resells Exchange Securities that were received by it for its own account pursuant to the Exchange Offer and any broker or dealer that participates in a distribution of such Exchange
Securities may be deemed to be an “underwriter” within the meaning of the Securities Act and any profit on any such resale of Exchange Securities and any commission or concessions received by any such persons may be deemed to be
underwriting compensation under the Securities Act. The Letter of Transmittal states that, by acknowledging that it will deliver and by delivering a prospectus, a broker-dealer will not be deemed to admit that it is an “underwriter” within
the meaning of the Securities Act. 
 For a period of 180 days after the Expiration Date the Company will promptly send
additional copies of this Prospectus and any amendment or supplement to this Prospectus to any broker-dealer that requests such documents in the Letter of Transmittal. The Company has agreed to pay all of its expenses incident to the Exchange Offer
and the reasonable expenses of one counsel for the Holders other than commissions or concessions of any brokers or dealers and will indemnify the Holders (including any broker-dealers) against certain liabilities, including liabilities under the
Securities Act. 
  
 (1) In addition, the legend required by Item 502(e) of Regulation S-K will appear on the back cover page of the
Exchange Offer prospectus. 

 ANNEX D 
  ̈ CHECK HERE IF YOU ARE A BROKER-DEALER AND WISH TO RECEIVE 10 ADDITIONAL COPIES OF THE PROSPECTUS AND 10 COPIES OF ANY AMENDMENTS OR SUPPLEMENTS THERETO.

  

					
		 	Name:	 	  

		 	Address:	 	  

		 		 	  

 If the undersigned is not a broker-dealer, the undersigned represents that it is not engaged in, and
does not intend to engage in, a distribution of Exchange Securities. If the undersigned is a broker-dealer that will receive Exchange Securities for its own account in exchange for Initial Securities that were acquired as a result of market-making
activities or other trading activities, it acknowledges that it will deliver a prospectus in connection with any resale of such Exchange Securities; however, by so acknowledging and by delivering a prospectus, the undersigned will not be deemed to
admit that it is an “underwriter” within the meaning of the Securities Act. 

 SCHEDULE I 
 LIST OF SUBSIDIARY GUARANTORS 
  

			
	 Name of Subsidiary
  
	 	 State or
Jurisdiction of Incorporation
  

	 MarathonNorco
Aerospace, Inc.
  
	 	 Delaware
  

	 Adams Rite
Aerospace, Inc.
  
	 	 California
  

	 Champion
Aerospace LLC
  
	 	 Delaware
  

	 Avionic
Instruments LLC
  
	 	 Delaware
  

	 Skurka
Aerospace Inc.
  
	 	 Delaware
  

	 CDA InterCorp
LLC
  
	 	 Florida
  

	 AeroControlex
Group, Inc.
  
	 	 Delaware
  

	 Aviation
Technologies, Inc.
  
	 	 Delaware
  

	 Avtech
Corporation
  
	 	 Washington
  

	 Transicoil LLC

  
	 	 Delaware
  

	 Malaysian
Aerospace Services, Inc.
  
	 	 Delaware
  

	 Bruce
Aerospace, Inc.
  
	 	 Delaware
  

	 CEF Industries,
LLC
  
	 	 Delaware
  

	 Aircraft Parts
Corporation
  
	 	 New York
  

	 Acme Aerospace,
Inc.
  
	 	 Delaware
  

 SCHEDULE II 
 INITIAL PURCHASERS 
 Credit Suisse Securities (USA) LLC 
 Barclays Capital Inc. 
 UBS Securities LLC

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