EX-4.8



 Exhibit 4.8 

$1,200,000,000 

TRANSDIGM INC. 
 6.500%
Senior Subordinated Notes due 2024 
 REGISTRATION RIGHTS AGREEMENT 

June 4, 2014 
 MORGAN
STANLEY & CO. LLC (“MS”) 
 CREDIT SUISSE SECURITIES
(USA) LLC (“CS”) 
 As Representatives of the Initial Purchasers, 

c/o Morgan Stanley & Co. LLC 
 1585 Broadway 

New York, NY 10036 
 Dear Sirs: 

TransDigm Inc., a Delaware corporation (the “Issuer”), proposes to issue and sell to MS and CS, as representatives of the
initial purchasers (set forth on Schedule I hereto (the “Initial Purchasers”)), upon the terms set forth in a purchase agreement (the “Purchase Agreement”), $1,200,000,000 aggregate principal amount of its 6.500%
Senior Subordinated Notes due 2024 (the “Initial Securities”) to be unconditionally guaranteed (the “Guarantees”) by TransDigm Group Incorporated (“TD Group”) and the subsidiaries of the Issuer
listed on Schedule II hereto (such subsidiaries are hereinafter collectively referred to as the “Company Guarantors”). TD Group and the Company Guarantors are collectively referred to herein as the “Guarantors” and
the Issuer, TD Group and the Company Guarantors are collectively referred to herein as the “Company”. The Initial Securities will be issued pursuant to an indenture, dated as of the date hereof (as supplemented from time to time,
the “Indenture”), among the Issuer, the Guarantors and The Bank of New York Mellon Trust Company, N.A., 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 (i) 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) 

  
 1 








 
after the Issue Date, (ii) consummate such Registered Exchange Offer not later than 310 days (or if the 310th day is not a business day, the first business day thereafter) after the Issue
Date and (iii) 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 (or such shorter period during which broker-dealers are
required by law to deliver such prospectus) 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


  
 2 








 
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; 
 (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. 
 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. 

  
 3 








 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 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 applicable interpretations 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) and can be sold pursuant to Rule 144 without any limitation under clauses (c), (e), (f) and (h) of Rule 144. 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. 

  
 4 








 (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 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. To the extent applicable, in connection with any Shelf Registration contemplated by Section 2 hereof and 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) in the case of a Registered Exchange Offer, 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) in the case of a Registered Exchange Offer, 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) in the case of a Registered Exchange Offer, 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; 

  
 5 








 (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 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 any 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, if any, included therein, and, if the Holder so requests in writing, all exhibits
thereto (other than 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, if any, included therein, and,
if an Initial Purchaser or any such Holder so requests, all exhibits thereto (other than 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 a Shelf
Registration Statement, the Company shall register or qualify or cooperate with the Holders 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, as the case may be, and, in the case of a Shelf Registration Statement, 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 12-month period (or 90 days, if such period


  
 7 








 
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, as required by the rules and regulations of the Commission 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 therein and (B) as of an applicable time identified by such Holders or managing underwriters, the 

  
 8 








 
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 5121, shall so require, engaging a “qualified independent underwriter” (as defined in Rule 5121) 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. 
 (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


  
 10 








 
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 considerations. The relative fault of the parties shall be determined by reference to, among other things, whether


  
 11 








 
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 the 180th day after the date hereof, 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 the 270th day after the date hereof, neither
the Exchange Offer Registration Statement nor, if required in lieu thereof, the Shelf Registration Statement, is declared effective by the Commission; 

(iv) the Registered 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 above (other than with respect to clause (i) thereunder), 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


  
 12 








 
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 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, if required, 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, (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 

  
 13 








 
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. 

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: 

 c/o Morgan Stanley & Co. LLC 

1585 Broadway 
 New York, NY
10036 
 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 3000 

Cleveland, OH 44114 

  
 14 








 
Fax No.: (216) 706-2937 
 Attention: Chief Financial Officer 

with a copy (without constituting notice) to: 

Jones Day 
 901 Lakeside Ave.

 Cleveland, OH 44114 
 Fax
No.: (216) 579-0212 
 Attention: Christopher Kelly, 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 Secretary
	
	TRANSDIGM GROUP INCORPORATED
		
	By:	 	 /s/ Gregory Rufus

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



  
 16 








 
							
	 ACME AEROSPACE, INC.
 ADAMS RITE
AEROSPACE, INC.
 AEROCONTROLEX GROUP, INC.
 AIRBORNE
ACQUISITION, INC
 AIRBORNE GLOBAL, INC.
 AIRBORNE HOLDINGS,
INC.
 AIRBORNE SYSTEMS NA INC.
 AIRBORNE SYSTEMS NORTH AMERICA
INC.
 AIRBORNE SYSTEMS NORTH AMERICA OF CA INC.
 AIRBORNE
SYSTEMS NORTH AMERICA OF NJ INC.
 AMSAFE – C SAFE, INC.

AMSAFE COMMERCIAL PRODUCTS, INC.
 AMSAFE GLOBAL HOLDINGS, INC.

AMSAFE, INC.
 AMSAFE INDUSTRIES, INC.

AP GLOBAL ACQUISITION CORP.
 AP GLOBAL HOLDINGS, INC.

ARKWIN INDUSTRIES, INC.
 AVIATION TECHNOLOGIES, INC.

AVIONICS SPECIALTIES, INC.
 AVTECHTYEE, INC.

BRIDPORT-AIR CARRIER, INC.
 BRIDPORT ERIE AVIATION, INC.

BRIDPORT HOLDINGS, INC.
 BRUCE AEROSPACE INC.

BRUCE INDUSTRIES, INC.
 DUKES AEROSPACE, INC.

ELECTROMECH TECHNOLOGIES LLC

		 	By:	 	 McKechnie Aerospace Investments, Inc.,

its sole member

	 HARTWELL CORPORATION
 MALAYSIAN
AEROSPACE SERVICES, INC.
 MARATHONNORCO AEROSPACE, INC.

MCKECHNIE AEROSPACE DE, INC.
 MCKECHNIE AEROSPACE HOLDINGS,
INC.
 MCKECHNIE AEROSPACE INVESTMENTS, INC.

MCKECHNIE AEROSPACE US LLC

		 	By:	 	McKechnie Aerospace DE, Inc., its sole member
	 SCHNELLER INTERNATIONAL SALES CORP.

SEMCO INSTRUMENTS, INC.
 SKURKA AEROSPACE INC.

TEXAS ROTRONICS, INC.
 TRANSICOIL LLC

		 	By:	 	Aviation Technologies, Inc., its sole member
		
	By:	 	 /s/ Gregory Rufus

		 		 	Name:	 	Gregory Rufus
		 		 	Title:	 	Treasurer and Secretary



  
 17 








 
					
	 AEROSONIC LLC
 AVIONIC INSTRUMENTS
LLC
 CDA INTERCORP LLC
 CEF INDUSTRIES, LLC

CHAMPION AEROSPACE LLC
 HARCO LLC

SCHNELLER HOLDINGS LLC
 SCHNELLER LLC

		 	By: Schneller Holdings LLC, its sole member
	WHIPPANY ACTUATION SYSTEMS, LLC
		
	By:	 	TransDigm Inc., its sole member
		
	By:	 	 /s/ Gregory Rufus

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



  
 18 









							
	 The foregoing Registration
 Rights
Agreement is hereby confirmed
 and accepted as of the date first

above written.
  

Morgan Stanley & Co. LLC

			
		 	By:	 	 /s/ Nicholas Romig

		 		 	Name:	 	Nicholas Romig
		 		 	Title:	 	Authorized Signatory
	
	Credit Suisse Securities (USA) LLC
			
		 	By:	 	 /s/ Hayes Smith

		 		 	Name:	 	Hayes Smith
		 		 	Title:	 	Managing Director
	
	 For itself and on behalf of the

several Initial Purchasers set forth in
 Schedule I
hereto



  
 19 








 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.” 

  
 20 








 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.” 

  
 21 








 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. 


  
 22 








 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. 

  
 23 








 SCHEDULE I 

INITIAL PURCHASERS 
 Morgan
Stanley & Co. LLC 
 Credit Suisse Securities (USA) LLC 

Barclays Capital Inc. 
 Citigroup
Global Markets Inc. 
 Credit Agricole Securities (USA) Inc. 

HSBC Securities (USA) Inc. 
 MCS
Capital Markets LLC 
 RBC Capital Markets, LLC 

UBS Securities LLC 
 PNC Capital
Markets LLC 

  
 24 








 SCHEDULE II 

LIST OF COMPANY GUARANTORS 
  

			
	 Name of Guarantor
	  	 State or Jurisdiction of Incorporation

		
	Acme Aerospace, Inc.	  	Delaware
		
	Adams Rite Aerospace, Inc.	  	California
		
	AeroControlex Group, Inc.	  	Delaware
		
	Aerosonic LLC	  	Delaware
		
	Airborne Global, Inc.	  	Delaware
		
	Airborne Holdings, Inc.	  	Delaware
		
	Airborne Acquisition, Inc.	  	Delaware
		
	Airborne Systems NA Inc.	  	Delaware
		
	Airborne Systems North America Inc.	  	Delaware
		
	Airborne Systems North America of CA Inc.	  	Delaware
		
	Airborne Systems North America of NJ Inc.	  	New Jersey
		
	AmSafe, Inc.	  	Delaware
		
	AmSafe – C Safe, Inc.	  	Delaware
		
	AmSafe Commercial Products, Inc.	  	Delaware
		
	AmSafe Global Holdings, Inc.	  	Delaware
		
	AmSafe Industries, Inc.	  	Delaware
		
	AP Global Holdings, Inc.	  	Delaware
		
	AP Global Acquisition Corp.	  	Delaware
		
	Arkwin Industries, Inc.	  	New York
		
	Aviation Technologies, Inc.	  	Delaware
		
	Avionic Instruments LLC	  	Delaware
		
	Avionics Specialties, Inc.	  	Virginia
		
	AvtechTyee, Inc.	  	Washington
		
	Bridport-Air Carrier, Inc.	  	Washington
		
	Bridport Erie Aviation, Inc	  	Delaware
		
	Bridport Holdings, Inc.	  	Delaware
		
	Bruce Aerospace Inc.	  	Delaware
		
	Bruce Industries, Inc.	  	Colorado


  
 25 









			
	CDA InterCorp LLC	  	Florida
		
	CEF Industries, LLC	  	Delaware
		
	Champion Aerospace LLC	  	Delaware
		
	Dukes Aerospace, Inc.	  	Delaware
		
	Electromech Technologies LLC	  	Delaware
		
	HARCO LLC	  	Connecticut
		
	Hartwell Corporation	  	California
		
	Malaysian Aerospace Services, Inc.	  	Delaware
		
	MarathonNorco Aerospace, Inc.	  	Delaware
		
	McKechnie Aerospace DE, Inc.	  	Delaware
		
	McKechnie Aerospace Holdings, Inc.	  	Delaware
		
	McKechnie Aerospace Investments, Inc.	  	Delaware
		
	McKechnie Aerospace US LLC	  	Delaware
		
	Schneller Holdings LLC	  	Delaware
		
	Schneller International Sales Corp.	  	Ohio
		
	Schneller LLC	  	Delaware
		
	Semco Instruments, Inc.	  	Delaware
		
	Skurka Aerospace Inc.	  	Delaware
		
	Texas Rotronics, Inc.	  	Texas
		
	Transicoil LLC	  	Delaware
		
	Whippany Actuation Systems, LLC	  	Delaware


  
 26