EX-4.3





 Exhibit 4.3 

$2,650,000,000 

TRANSDIGM INC. 
 5.500%
Senior Subordinated Notes due 2027 
 REGISTRATION RIGHTS AGREEMENT 

November 13, 2019 
 MORGAN
STANLEY & CO. LLC (“MS”) 
     As Representative of the Initial
Purchasers 
 c/o Morgan Stanley & Co. LLC 
 1585
Broadway, 29th Floor 
 New York, NY 10036 

Ladies and Gentlemen: 

TransDigm Inc., a Delaware corporation (the “Issuer”), proposes to issue and sell to MS, as representative of
the initial purchasers (set forth on Schedule I hereto (the “Initial Purchasers”)), upon the terms set forth in a purchase agreement, dated as of October 29, 2019 (the “Purchase Agreement”),
$2,650,000,000 aggregate principal amount of its 5.500% Senior Subordinated Notes due 2027 (the “Initial Securities”), to be unconditionally guaranteed (the “Guarantees”) by TransDigm Group Incorporated (“TD
Group”), TransDigm UK Holdings plc (“TD UK”) and the subsidiaries of the Issuer listed on Schedule II hereto (such subsidiaries are hereinafter collectively referred to as the “Company Guarantors”).
TD Group, TD UK and the Company Guarantors are collectively referred to herein as the “Guarantors” and the Issuer, TD Group, TD UK 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 in Section 1 hereof) and the Private Exchange Securities (as defined in Section 1 hereof) (collectively, the “Holders”), as follows: 

1. Registered Exchange Offer. The Company shall, at its own cost, prepare and, not later than 210 days (or if the
210th 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 300 days (or if the 300th day is not a business day, the first business day
thereafter) after the Issue Date, (ii) consummate such Registered Exchange Offer not later than 340 days (or if the 340th 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 20 business 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 Item 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 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; 

  
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 (b) keep the Registered Exchange Offer open for not less
than 20 business 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. 
 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 340 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 

  
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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 300th 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. 
 (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 

  
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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 Item 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 Sections 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 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 

  
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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. 
 (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 

  
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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 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 (the “Trust Indenture Act”), 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 

  
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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 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 covering the matters set forth in the opinions delivered pursuant to 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 (i) 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 (ii) 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 

  
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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. 
 (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 

  
 9 













 
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 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 subsection (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 

  
 10 













 
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 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 210th 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 300th 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 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 

  
 11 













 
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 and (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. 
 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 

  
 12 













 
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: 

Morgan Stanley & Co. LLC 

1585 Broadway, 29th Floor 

New York, NY 10036 

Attention: High Yield Syndicate Desk, 

with a copy to the Legal Department 

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. 

Sasha Rosenthal-Larrea 
  

	 	(3)	 if to the Company, at its address as follows: 



TransDigm Inc. 

1301 East 9th Street, Suite 3000 

Cleveland, OH 44114 

Fax No.: (216) 706-2937 

Attention: Chief Financial Officer 

with a copy (without constituting notice) to: 

Jones Day 

North Point 

901 Lakeside Avenue 

Cleveland, Ohio 44114-1190 

Fax No.: (216) 579-0212 

Attention: Michael J. Solecki, Esq. 

  
 13 













 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. 

[Remainder of page intentionally left blank] 

  
 14 













 If the foregoing is in accordance with the Purchasers’ understanding of our agreement,
kindly sign and return to us one of the counterparts hereof, whereupon it will become a binding agreement between the Company, the Guarantors and the Purchasers in accordance with its terms. 

 

							
	Very truly yours,	 	            
			
	        	 	TRANSDIGM GROUP INCORPORATED	 	
				
		 	By:	 	 /s/ Michael J. Lisman
	 	
		 		 	Name: Michael J. Lisman	 	
		 		 	Title:   Chief Financial Officer	 	
			
		 	TRANSDIGM INC.	 	
				
		 	By:	 	 /s/ Michael J. Lisman
	 	
		 		 	Name: Michael J. Lisman	 	
		 		 	Title:   Chief Financial Officer	 	














 
					
	     
	 		 	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.
		 		 	AMSAFE GLOBAL HOLDINGS, INC.
		 		 	AMSAFE, INC.
		 		 	ANGUS ELECTRONICS CO.
		 		 	ARKWIN INDUSTRIES, INC.
		 		 	ARMTEC COUNTERMEASURES CO.
		 		 	ARMTEC COUNTERMEASURES TNO CO.
		 		 	ARMTEC DEFENSE PRODUCTS CO.
		 		 	AUXITROL WESTON USA, INC.
		 		 	AVIATION TECHNOLOGIES, INC.
		 		 	AVIONICS SPECIALTIES, INC.
		 		 	AVISTA, INCORPORATED
		 		 	AVTECHTYEE, INC.
		 		 	BETA TRANSFORMER TECHNOLOGY CORPORATION
		 		 	BRIDPORT HOLDINGS, INC.
		 		 	BRIDPORT-AIR CARRIER, INC.
		 		 	BRUCE AEROSPACE INC.
		 		 	DATA DEVICE CORPORATION
		 		 	DUKES AEROSPACE, INC.
		 		 	ESTERLINE INTERNATIONAL COMPANY
		 		 	ESTERLINE TECHNOLOGIES CORPORATION
		 		 	EXTANT COMPONENTS GROUP HOLDINGS, INC.
		 		 	EXTANT COMPONENTS GROUP INTERMEDIATE, INC.
		 		 	HARTWELL CORPORATION
		 		 	HYTEK FINISHES CO.
		 		 	ILC HOLDINGS, INC.
		 		 	JANCO CORPORATION
		 		 	KIRKHILL INC.
		 		 	KORRY ELECTRONICS CO.
		 		 	LEACH HOLDING CORPORATION
		 		 	LEACH INTERNATIONAL CORPORATION
		 		 	LEACH TECHNOLOGY GROUP, INC.
		 		 	MARATHONNORCO AEROSPACE, INC.
		 		 	MASON ELECTRIC CO.
		 		 	MCKECHNIE AEROSPACE DE, INC.
		 		 	MCKECHNIE AEROSPACE HOLDINGS, INC.
		 		 	NMC GROUP, INC.















					
	     
	 		 	 NORTH HILLS SIGNAL PROCESSING CORP.

		 		 	 NORTH HILLS SIGNAL PROCESSING OVERSEAS CORP.

		 		 	 NORWICH AERO PRODUCTS INC.

		 		 	 PALOMAR PRODUCTS, INC.

		 		 	 PEXCO AEROSPACE, INC.

		 		 	 PNEUDRAULICS, INC.

		 		 	 RACAL ACOUSTICS, INC.

		 		 	 SEMCO INSTRUMENTS, INC.

		 		 	 SHIELD RESTRAINT SYSTEMS, INC.

		 		 	 SKANDIA, INC.

		 		 	 SKURKA AEROSPACE INC.

		 		 	 TA AEROSPACE CO.

		 		 	 TACTAIR FLUID CONTROLS, INC.

		 		 	 TDG ESL HOLDINGS INC.

		 		 	 TEAC AEROSPACE HOLDINGS, INC.

		 		 	 TEAC AEROSPACE TECHNOLOGIES, INC.

		 		 	 TEXAS ROTRONICS, INC.

		 		 	 YOUNG & FRANKLIN INC.



 
							
				
		 		 	 By:
	 	 /s/ Liza Sabol

		 		 		 	 Name: Liza Sabol

		 		 		 	 Title:   Treasurer















 
							
		 	 17111 WATERVIEW PKWY LLC

		 		 	 By:
	 	 Esterline Technologies Corporation,

		 		 		 	 as its sole member

		 	 BETA TRANSFORMER TECHNOLOGY LLC

		 		 	 By:
	 	 Beta Transformer Technology Corporation,

		 		 		 	 as its sole member

		 	 CMC ELECTRONICS AURORA LLC

		 		 	 By:
	 	 Esterline Technologies Corporation,

		 		 		 	 as its sole member

		 	 ELECTROMECH TECHNOLOGIES LLC

		 		 	 By:
	 	 McKechnie Aerospace US LLC, as its sole member

		 		 	 By:
	 	 McKechnie Aerospace DE, Inc., as its sole member

		 	 ESTERLINE EUROPE COMPANY LLC

		 		 	 By:
	 	 Esterline Technologies Corporation,

		 		 		 	 as its sole member

		 	 ESTERLINE TECHNOLOGIES SGIP, LLC

		 		 	 By:
	 	 Esterline Technologies Corporation,

		 		 		 	 as its sole member

		 	 JOHNSON LIVERPOOL LLC

		 		 	 By:
	 	 Young & Franklin Inc., as its sole member

		 	 MCKECHNIE AEROSPACE US LLC

		 		 	 By:
	 	 McKechnie Aerospace DE, Inc., as its sole member

		 	 SCIOTEQ LLC

		 		 	 By:
	 	 TREALITY SVS LLC, as its sole member

		 		 	 By:
	 	 Esterline Europe Company LLC, as its sole member

		 		 	 By:
	 	 Esterline Technologies Corporation, as its sole member

		 	 SYMETRICS INDUSTRIES, LLC

		 		 	 By:
	 	 Symetrics Technology Group, LLC, as its sole member

		 		 	 By:
	 	 Extant Components Group Intermediate, Inc., as its sole member

		 	 SYMETRICS TECHNOLOGY GROUP, LLC

		 		 	 By:
	 	 Extant Components Group Intermediate, Inc., as its sole member

		 	 TREALITY SVS LLC

		 		 	 By:
	 	 Esterline Europe Company LLC, as its sole member

		 		 	 By:
	 	 Esterline Technologies Corporation, as its sole member

		 	 TRANSICOIL LLC

		 		 	 By:
	 	 Aviation Technologies, Inc., as its sole member

				
		 	 By:
	 		 	 /s/ Liza Sabol

		 		 		 	 Name: Liza Sabol

		 		 		 	 Title:   Treasurer



  













							
		 	 AEROSONIC LLC

		 	 AVIONIC INSTRUMENTS LLC

		 	 BREEZE-EASTERN LLC

		 	 CDA INTERCORP LLC

		 	 CEF INDUSTRIES, LLC

		 	 CHAMPION AEROSPACE LLC

		 	 HARCOSEMCO LLC

		 	 SCHNELLER LLC

		 	 TELAIR US LLC

		 	 TELAIR INTERNATIONAL LLC

		 	     
	 	 By:
	 	 Telair US LLC, as its sole member

		 	 WHIPPANY ACTUATION SYSTEMS, LLC

		 		 	 Each By: TransDigm Inc., as its sole member

				
		 		 	 By:
	 	 /s/ Michael J. Lisman

		 		 		 	 Name: Michael J. Lisman

		 		 		 	 Title:   Chief Financial Officer

			
		 		 	 AIRBORNE SYSTEMS NORTH AMERICA OF NJ INC.

				
		 		 	 By:
	 	 /s/ Michael J. Lisman

		 		 		 	 Name: Michael J. Lisman

		 		 		 	 Title:   Chairman of the Board and

		 		 		 	             Chief Executive Officer

			
		 		 	 BRIDPORT ERIE AVIATION, INC.

				
		 		 	 By:
	 	 /s/ Liza Sabol

		 		 		 	 Name: Liza Sabol

		 		 		 	 Title:   Chairman of the Board and President

			
		 		 	 TRANSDIGM UK HOLDINGS PLC

				
		 		 	 By:
	 	 /s/ Liza Sabol

		 		 		 	 Name: Liza Sabol

		 		 		 	 Title:   Director















							
		 	 JOSLYN SUNBANK COMPANY, LLC

		 		 	 By:
	 	 Sunbank Family of Companies, LLC,

		 		 		 	 as its sole member

				
		 	     
	 	 By:
	 	 Esterline Technologies Corporation,

		 		 		 	 as its sole member

				
		 		 	 By:
	 	 /s/ Liza Sabol

		 		 		 	 Name: Liza Sabol

		 		 		 	 Title:   Treasurer

		
		 	 SUNBANK FAMILY OF COMPANIES, LLC

		 		 	 By:
	 	 Esterline Technologies Corporation,

		 		 		 	 as its sole member

				
		 		 	 By:
	 	 /s/ Liza Sabol

		 		 		 	 Name: Liza Sabol

		 		 		 	 Title:   Treasurer

		
		 	 SOURIAU USA, INC.

				
		 		 	 By:
	 	 /s/ Liza Sabol

		 		 		 	 Name: Liza Sabol

		 		 		 	 Title:   Treasurer














 The foregoing Registration 

Rights Agreement is hereby confirmed 
 and accepted as of the date
first 
 above written. 
  

			
	 MORGAN STANLEY & CO. LLC

		
	 By:
	 	 /s/ Jordan Ransom

		
		 	 Name: Jordan Ransom

		
		 	 Title:   Authorized Signatory


 [Signature Page to Registration Rights Agreement] 












 ANNEX A 

to the Registration Rights Agreement 

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 

to the Registration Rights Agreement 

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 

to the Registration Rights Agreement 

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(b) of Regulation S-K will appear on the back cover page of the Exchange Offer prospectus. 












 ANNEX D 

to the Registration Rights Agreement 

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 

to the Registration Rights Agreement 
  

			
		  	         INITIAL
PURCHASERS


  

	
	
	 Morgan Stanley & Co. LLC

	
	 Goldman Sachs & Co. LLC

	
	 Citigroup Global Markets Inc.

	
	 J.P. Morgan Securities LLC

	
	 Credit Suisse Securities (USA) LLC

	
	 KKR Capital Markets LLC

	
	 RBC Capital Markets LLC

	
	 Barclays Capital Inc.

	
	 Credit Agricole Securities (USA) Inc.

	
	 HSBC Securities (USA) Inc.

	
	 PNC Capital Markets LLC


  












 SCHEDULE II 

to the Registration Rights Agreement 

LIST OF COMPANY GUARANTORS 
  

					
	  	 	Name of Guarantor	  	
Jurisdiction of

Incorporation or

Organization

	1.  	 	
Acme Aerospace, Inc.
	  	Delaware
	2.  	 	
Adams Rite Aerospace, Inc.
	  	California
	3.  	 	
AeroControlex Group, Inc.
	  	Delaware
	4.  	 	
Aerosonic LLC
	  	Delaware
	5.  	 	
Airborne Acquisition, Inc.
	  	Delaware
	6.  	 	
Airborne Global, Inc.
	  	Delaware
	7.  	 	
Airborne Holdings, Inc.
	  	Delaware
	8.  	 	
Airborne Systems NA Inc.
	  	Delaware
	9.  	 	
Airborne Systems North America Inc.
	  	Delaware
	10.  	 	
Airborne Systems North America of CA Inc.
	  	Delaware
	11.  	 	
Airborne Systems North America of NJ Inc.
	  	New Jersey
	12.  	 	
AmSafe, Inc.
	  	Delaware
	13.  	 	
AmSafe Global Holdings, Inc.
	  	Delaware
	14.  	 	
Angus Electronics Co.
	  	Delaware
	15.  	 	
Arkwin Industries, Inc.
	  	New York
	16.  	 	
Armtec Countermeasures Co.
	  	Delaware
	17.  	 	
Armtec Countermeasures TNO Co.
	  	Delaware
	18.  	 	
Armtec Defense Products Co.
	  	Delaware
	19.  	 	
Auxitrol Weston USA, Inc.
	  	Delaware
	20.  	 	
Aviation Technologies, Inc.
	  	Delaware














					
	  	 	Name of Guarantor	  	
Jurisdiction of

Incorporation or

Organization

	21.  	 	
Avionic Instruments LLC
	  	Delaware
	22.  	 	
Avionics Specialties, Inc.
	  	Virginia
	23.  	 	
Avista, Incorporated
	  	Wisconsin
	24.  	 	
AvtechTyee, Inc.
	  	Washington
	25.  	 	
Beta Transformer Technology Corporation
	  	New York
	26.  	 	
Beta Transformer Technology LLC
	  	Delaware
	27.  	 	 Breeze-Eastern LLC
	  	Delaware
	28.  	 	 Bridport-Air Carrier, Inc.
	  	Washington
	29.  	 	
Bridport Erie Aviation, Inc.
	  	Delaware
	30.  	 	
Bridport Holdings, Inc.
	  	Delaware
	31.  	 	
Bruce Aerospace Inc.
	  	Delaware
	32.  	 	
CDA InterCorp LLC
	  	Florida
	33.  	 	
CEF Industries, LLC
	  	Delaware
	34.  	 	
Champion Aerospace LLC
	  	Delaware
	35.  	 	
CMC Electronics Aurora LLC
	  	Delaware
	36.  	 	
Data Device Corporation
	  	Delaware
	37.  	 	
Dukes Aerospace, Inc.
	  	Delaware
	38.  	 	
Electromech Technologies LLC
	  	Delaware
	39.  	 	
Esterline Europe Company LLC
	  	Delaware
	40.  	 	
Esterline International Company
	  	Delaware
	41.  	 	
Esterline Technologies Corporation
	  	Delaware
	42.  	 	
Esterline Technologies SGIP LLC
	  	Delaware
	43.  	 	
Extant Components Group Holdings, Inc.
	  	Delaware


  
 II-2 














					
	  	 	Name of Guarantor	  	
Jurisdiction of

Incorporation or

Organization

	44.  	 	
Extant Components Group Intermediate, Inc.
	  	Delaware
	45.  	 	
HarcoSemco LLC
	  	Connecticut
	46.  	 	
Hartwell Corporation
	  	California
	47.  	 	
Hytek Finishes Co.
	  	Delaware
	48.  	 	
ILC Holdings, Inc.
	  	Delaware
	49.  	 	
Janco Corporation
	  	California
	50.  	 	
Johnson Liverpool LLC
	  	Delaware
	51.  	 	
Joslyn Sunbank Company, LLC
	  	California
	52.  	 	
Kirkhill Inc.
	  	Delaware
	53.  	 	
Korry Electronics Co.
	  	Delaware
	54.  	 	
Leach Holding Corporation
	  	Delaware
	55.  	 	
Leach International Corporation
	  	Delaware
	56.  	 	
Leach Technology Group, Inc.
	  	Delaware
	57.  	 	
MarathonNorco Aerospace, Inc.
	  	Delaware
	58.  	 	
Mason Electric Co.
	  	Delaware
	59.  	 	
McKechnie Aerospace DE, Inc.
	  	Delaware
	60.  	 	
McKechnie Aerospace Holdings, Inc.
	  	Delaware
	61.  	 	
McKechnie Aerospace US LLC
	  	Delaware
	62.  	 	
NMC Group, Inc.
	  	California
	63.  	 	
North Hills Signal Processing Corp.
	  	Delaware
	64.  	 	
North Hills Signal Processing Overseas Corp.
	  	Delaware
	65.  	 	
Norwich Aero Products, Inc.
	  	New York


  
 II-3 














					
	  	 	Name of Guarantor	  	
Jurisdiction of

Incorporation or

Organization

	66.  	 	
Palomar Products, Inc.
	  	Delaware
	67.  	 	
Pexco Aerospace, Inc.
	  	Delaware
	68.  	 	
PneuDraulics, Inc.
	  	California
	69.  	 	
Racal Acoustics, Inc.
	  	Delaware
	70.  	 	
Schneller LLC
	  	Delaware
	71.  	 	
ScioTeq LLC
	  	Delaware
	72.  	 	
Semco Instruments, Inc.
	  	Delaware
	73.  	 	
Shield Restraint Systems, Inc.
	  	Delaware
	74.  	 	
Skandia, Inc.
	  	Illinois
	75.  	 	
Skurka Aerospace Inc.
	  	Delaware
	76.  	 	
Souriau USA, Inc.
	  	Delaware
	77.  	 	
Sunbank Family of Companies, LLC
	  	California
	78.  	 	
Symetrics Industries, LLC
	  	Florida
	79.  	 	
Symetrics Technology Group, LLC
	  	Florida
	80.  	 	
TA Aerospace Co.
	  	California
	81.  	 	
Tactair Fluid Controls, Inc.
	  	New York
	82.  	 	
TDG ESL Holdings Inc.
	  	Delaware
	83.  	 	
TEAC Aerospace Holdings, Inc.
	  	Delaware
	84.  	 	
TEAC Aerospace Technologies, Inc.
	  	Delaware
	85.  	 	
Telair International LLC
	  	Delaware
	86.  	 	
Telair US LLC
	  	Delaware
	87.  	 	
Texas Rotronics, Inc.
	  	Texas
	88.  	 	
Transicoil LLC
	  	Delaware


  
 II-4 














					
	  	 	Name of Guarantor	  	
Jurisdiction of

Incorporation or

Organization

	89.  	 	
TREALITY SVS LLC
	  	Delaware
	90.  	 	
Whippany Actuation Systems, LLC
	  	Delaware
	91.  	 	
Young & Franklin Inc.
	  	New York
	92.  	 	
17111 Waterview Pkwy LLC
	  	Delaware


  
 II-5