EX-10.1



 Exhibit 10.1 

Execution Copy 
 THIRD
AMENDED AND RESTATED EMPLOYMENT AGREEMENT 
 THIS AGREEMENT, dated as of August 28, 2014, is made by and between
TransDigm Group Incorporated, a Delaware corporation (the “Company”), and W. Nicholas Howley (the “Executive”). 

RECITALS: 
 WHEREAS, the
Executive is a party to a Second Amended and Restated Employment Agreement with the Company dated as of February 24, 2011, as amended as of October 24, 2012 (the “Prior Employment Agreement”); and 

WHEREAS, the term under the Prior Employment Agreement expires December 31, 2015; and 

WHEREAS, the Company and the Executive would like to continue the Executive’s employment with the Company on the terms set forth herein.

 NOW, THEREFORE, in consideration of the foregoing and of the respective covenants and agreements set forth below, the parties hereto
agree as follows: 
 1. Certain Definitions. 

(a) “Annual Base Salary” shall have the meaning set forth in Section 4(a). 

(b) “Black Scholes Value” shall have the meaning set forth in Section 4(c). 

(c) “Board” shall mean the Board of Directors of the Company. 

(d) “Cause” shall mean either of the following: (i) the repeated failure by the Executive, after written notice from the
Board, substantially to perform his material duties and responsibilities as an officer or employee or director of the Company or any of its subsidiaries (other than any such failure resulting from incapacity due to reasonably documented physical or
mental illness), (ii) any willful misconduct by the Executive that has the effect of materially injuring the business of the Company or any of its subsidiaries, including, without limitation, the disclosure of material secret or confidential
information of the Company or any of its subsidiaries, or (iii) the Executive’s conviction of, or pleading “guilty” or “ no contest” to a felony that is or could reasonably be expected to result in material harm to the
Company or any of its subsidiaries. 
 (e) “Change in Control” shall mean the occurrence of an event described in (i), (ii),
(iii) or (iv) below: 
 (i) A change in ownership or control of the Company after the Effective Date effected
through a transaction or series of transactions (other than an offering of Common Stock to the general public through a registration statement filed with the Securities and Exchange Commission), including by way of merger, consolidation or
otherwise, whereby any “person” or related “group” of “persons” (as such terms are used in Sections 







 
13(d) and 14(d)(2) of the Exchange Act) (other than the Company, any of its subsidiaries, an employee benefit plan maintained by the Company or any of its subsidiaries or a “person”
that, prior to such transaction, directly or indirectly controls, is controlled by, or is under common control with, the Company) directly or indirectly acquires beneficial ownership (within the meaning of Rule 13d-3 under the Exchange Act) of
securities of the Company possessing more than fifty percent (50%) of the total combined voting power of the Company’s securities outstanding immediately after such acquisition. 

(ii) The individuals who, as of the date hereof, are members of the Board of Directors of the Company (the “Incumbent
Board”), cease for any reason to constitute at least fifty percent (50%) of the members of the Board; provided, however, that if the election, or nomination for election by the Company’s common stockholders, of any new director
was approved by a vote of at least two-thirds of directors then comprising the Incumbent Board, such new director shall, for purposes of this Plan, be considered as a member of the Incumbent Board; provided further, however, that no individual shall
be considered a member of the Incumbent Board if such individual initially assumed office as a result of either an actual or threatened “Election Contest” (as described in Rule 14a-11 promulgated under the Exchange Act) or other actual or
threatened solicitation of proxies or consents by or on behalf of a Person other than the Board (a “Proxy Contest”) including by reason of any agreement intended to avoid or settle any Election Contest or Proxy Contest. 

(iii) The consummation of a complete liquidation or dissolution of the Company. 

(iv) The consummation of a sale or other disposition of all or substantially all of the assets of the Company to any Person
(other than a transfer to a subsidiary). 
 (f) “Code” shall mean the Internal Revenue Code of 1986, as amended. Reference
to a Section of the Code includes all rulings, regulations, notices, announcements, decisions, orders and other pronouncements that are issued by the United States Department of the Treasury, the Internal Revenue Service, or any court of competent
jurisdiction that are lawful and pertinent to the interpretation, application or effectiveness of such Section. 
 (g) “Common
Stock” shall mean the common stock of the Company, $0.01 par value per share. 
 (h) “Common Stock Limit” shall
have the meaning set forth in Section 4(g). 
 (i) “Company” shall have the meaning set forth in the preamble hereto.

 (j) “Company Equity” shall have the meaning set forth in Section 4(g). 

(k) “Compensation Committee” shall mean the Compensation Committee of the Board whose members shall be appointed by the Board
from time to time. 

  
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 (l) “Date of Termination” shall mean (i) if the Executive’s employment
is terminated by reason of his death, the date of his death, and (ii) if the Executive’s employment is terminated pursuant to Sections 5(a)(ii)—(vi), the date specified in the Notice of Termination. 

(m) “Disability” shall mean the inability of the Executive to perform his duties and responsibilities as an officer or
employee of the Company or any of its subsidiaries on a full-time basis for more than six months within any 12-month period because of a physical, mental or emotional incapacity resulting from injury, sickness or disease. 

(n) “Effective Date” shall mean August 28, 2014. 

(o) “Exchange Act” shall mean the Securities Exchange Act of 1934, as amended. 

(p) “Executive” shall have the meaning set forth in the preamble hereto. 

(q) “Fair Market Value” of Common Stock shall mean, as of any date, the closing price of the Common Stock on the New York
Stock Exchange or any other exchange on which the Common Stock is traded on the trading day immediately preceding such date. 
 (r)
“Good Reason” shall mean the occurrence of any of the following: (i) a material diminution in the Executive’s title, position, duties or responsibilities (including reporting responsibilities), without his prior written
consent, it being understood that a change in the Executive’s title to Executive Chairman shall not constitute Good Reason so long as (I) Executive Chairman is a full-time executive employee position, (II) the Executive has duties and
responsibilities that are consistent with those customarily associated with the title of Executive Chairman and that are acceptable to the Executive, and (III) there is no reduction in any element of the Executive’s compensation or benefits,
(ii) a reduction of the Executive’s Annual Base Salary or annual bonus opportunity without his prior written consent, (iii) Executive is not re-elected to the Board, (iv) the Company requires the Executive, without his prior
written consent, to be based at any office or location that requires a relocation greater than 30 miles from Cleveland, Ohio, or (v) any material breach of this Agreement by the Company. In addition to the foregoing, the term “Good
Reason” shall also be deemed to exist if the requirements of clauses (i) and (ii) below are met: 
 (i) Any of
the following events occurs: 
 (A) There is a change in the Executive’s title, position, duties or responsibilities
(including reporting responsibilities) which does not represent a promotion from the title, position, duties or responsibilities that are provided for under this Agreement; 

(B) The Executive is assigned any duties or responsibilities which are inconsistent with his title, position, duties or
responsibilities that are provided for under this Agreement; or 
 (C) There is a reduction of the Executive’s aggregate
cash compensation (including bonus opportunities), or a change in Executive’s benefits such that following such change, Executive’s benefits are not substantially 

  
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comparable to those to which he was entitled immediately prior to such change, in each case without his prior written consent. 

(ii) The event described in clause (i) above occurs under any of the following circumstances: 

(A) Within the one year period following a Change in Control, 

(B) Prior to the date of a Change in Control, at the request of a third party who has indicated an intention or taken steps
reasonably calculated to effect a Change in Control, or 
 (C) Otherwise in connection with, or in anticipation of, a Change
in Control which has been threatened or proposed. 
 (s) “Notice of Termination” shall have the meaning set forth in
Section 5(b). 
 (t) “Option Agreements” shall mean the written agreements between the Company and the Executive
pursuant to which the Executive holds or is granted options to purchase Common Stock, including, without limitation, agreements evidencing options granted under the Option Plan. 

(u) “Option Plan” shall mean any option plan adopted or maintained by the Company for employees generally. 

(v) “Options” as of any date of determination shall mean options held by the Executive as of such date to purchase Common
Stock of the Company. 
 (w) “Payment Period” shall have the meaning set forth in Section 6(b)(i). 

(x) “Prior Employment Agreement” shall have the meaning set forth in the Recitals. 

(y) “Retention Limit” shall have the meaning set forth in Section 4(g). 

(z) “Retirement” shall mean voluntary termination of employment by the Executive after age 60 and after 15 years of service
with the Company. 
 (aa) “Term” shall have the meaning set forth in Section 2. 

2. Employment. The Company shall continue to employ the Executive and the Executive shall remain in the employ of the Company, for the period set forth
in this Section 2, in the positions set forth in Section 3 and upon the other terms and conditions herein provided. The term of employment under this Agreement (the “Term”) shall be for the period beginning on the Effective
Date and ending on September 30, 2019 unless earlier terminated as provided in Section 5. 
 3. Position and Duties. During the Term, the
Executive shall serve as the Chairman and Chief Executive Officer of the Company with such customary responsibilities, duties and 

  
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authority as may from time to time be assigned to the Executive by the Board. In order to provide for the orderly transition of senior executive leadership, the Board may, during the Term and
with the Executive’s consent, determine that the Executive shall serve as Executive Chairman, which shall be a full-time executive officer position, entitling the Executive to all of the compensation, rights and benefits provided for in this
Agreement. During the Term, the Executive shall devote substantially all his working time and efforts to the business and affairs of the Company; provided, that it shall not be considered a violation of the foregoing for the Executive to
(i) with the prior consent of the Board (which consent shall not unreasonably be withheld), serve on corporate, industry, civic or charitable boards or committees (provided, that without such prior consent of the Board, the Executive shall,
subject to the limitation set forth below, be permitted to continue to serve as a member of the board of directors (or board of trustees) or as a committee member, as the case may be, of Case Western Reserve University, Consolidated Precision
Products Corp., Cristo Rey National Network, St. Martin de Porres, and the Rock and Roll Hall of Fame), and (ii) manage his personal or family investments, so long as none of such activities significantly interferes with the Executive’s
duties hereunder. 
 4. Compensation and Related Matters. 

(a) Annual Base Salary. During the Term, the Executive shall receive a base salary (the “Annual Base Salary”) at a rate that
is no less than $1,040,000 per annum in calendar year 2014, payable in accordance with the Company’s normal payroll practices. The rate of the Annual Base Salary shall be reviewed by the Compensation Committee on or prior to each anniversary of
the Effective Date during the Term and may be increased, but not decreased, upon such review. 
 (b) Bonus. For each fiscal year
during the Term, the Executive shall be eligible to participate in the Company’s annual cash bonus plan in accordance with the terms and provisions applicable to other senior executives of the Company, which, for fiscal years beginning with
fiscal year 2015, shall be consistent with the Company’s executive bonus policy adopted in July 2014. The Executive’s target bonus for each fiscal year during the term (beginning with fiscal year 2014) will be 125% of his Annual Base
Salary. 
 (c) Long-Term Incentive Compensation. During the Term, the Executive shall be entitled to participate in the Option Plan or
any successor plan thereto or any other long-term incentive plan implemented by the Company. Specifically, in the first three months of fiscal 2015 in accordance with the Company’s customary practices and timing, the Company will award to the
Executive a number of stock options equal to $10,600,000 divided by the Black Scholes Value. The “Black Scholes Value” shall be an amount derived by using the Black Scholes method of valuing an option to purchase a share of Common
Stock using the following assumptions: a current market price equal to the average of the closing prices of the Common Stock for the 45 trading days ending on the trading day immediately preceding the date of grant, a strike price equal to the
closing price of a share of Common Stock on the trading day immediately preceding the grant date, a risk free rate of 1.88%, a volatility of 35% and an expected life of six years. It is understood that the agreed upon assumptions for calculating the
Black Scholes Value equal approximately 37% of the market price of a share of Common Stock used in calculating the Black Scholes Value. Such options will vest at the end of fiscal year 2019. The Company will award to the Executive, in the first
three months of fiscal years 2016 

  
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through 2019 in accordance with the Company’s customary practices and timing, a number of stock options equal to (i) $10,600,000, increased by 3.5% each fiscal year of the term
beginning with fiscal year 2016 divided by (ii) the Black Scholes Value. Such options will vest at the end of the fourth fiscal year following the date of grant for options granted in the first three months of fiscal years 2016 and 2017, and
the third fiscal year for options granted in the first three months of fiscal years 2018 and 2019. The terms of the stock options will provide that if the Executive incurs a termination of employment under any of the circumstances described in
Section 5(a)(i), 5(a)(ii), 5(a)(iv) or 5(a)(v) or upon the Executive’s Retirement, vesting will continue with respect to a percentage of such options after such termination of employment as set forth on Exhibit A. The vesting
provisions for the options to be granted under this Section 4(c), including the performance vesting criteria and calculation methodology, shall be no less favorable to the Executive than the vesting provisions used for options granted by the
Company in fiscal years 2013 and 2014 year to date, including options that vested based upon the Company’s financial statements as of September 30, 2013. 

(d) Benefits. During the Term, the Executive shall be entitled to participate in the other employee benefit plans, programs and
arrangements of the Company now (or, to the extent determined by the Board or Compensation Committee, hereafter) in effect which are applicable to the senior officers of the Company generally, subject to and on a basis consistent with the terms,
conditions and overall administration thereof (including the right of the Company to amend, modify or terminate such plans). 
 (e)
Expenses. Pursuant to the Company’s customary policies in force at the time of payment, the Executive shall be reimbursed for all expenses properly incurred by the Executive on the Company’s behalf in the performance of the
Executive’s duties hereunder. 
 (f) Vacation Pay. The Executive shall be entitled to an amount of annual vacation days per year,
and to compensation in respect of earned but unused vacation days, in accordance with the Company’s vacation policy as in effect as of the Effective Date. The Executive shall also be entitled to paid holidays in accordance with the
Company’s practices with respect to same as in effect as of the Effective Date. 
 (g) Stock Retention Guidelines. At all times
during the Executive’s continued full-time employment by the Company, the Executive shall hold an aggregate amount of “Company Equity” with a value equal to or greater than $10,000,000 (the “Retention Limit”),
at least $5,000,000 of which shall constitute Common Stock held by the Executive (the “Common Stock Limit”). This Retention Limit and the Common Stock Limit will supersede any Retention Limit in any prior dated option or other
agreement between the Company and the Executive. For purposes of this Section 4(g), the Company Equity shall be an amount equal to (i) the Fair Market Value of any Common Stock held by the Executive plus (ii) the value of all vested
options then held by the Executive, which will be equal to the Fair Market Value of the Common Stock underlying the options over the exercise price. If at any time after the date hereof the aggregate amount of Company Equity held by the Executive
falls below the Retention Limit or if the aggregate amount of Common Stock held by the Executive falls below the Common Stock Limit, in either case, because of a decline in the Fair Market Value of the Common Stock from its Fair Market Value as of
the date hereof, the Executive will have three (3) years to reach the Retention Limit or the Common Stock Limit, as applicable. The Executive agrees not to make 

  
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any sales of vested Options unless the Executive would, at the time of the sale, be in compliance with the Retention Limit and the Common Stock Limit. The Executive’s failure to hold Company
Equity or Common Stock in accordance with this Section 4(g) shall, after notice from the Company to the Executive and a 30-day opportunity to cure, result in the Executive’s forfeiture of all unvested Options, unless otherwise determined
by the Compensation Committee of the Board, in its sole discretion. In the event the aggregate amount of Company Equity held by the Executive falls below the Retention Limit or if the aggregate amount of Common Stock held by the Executive falls
below the Common Stock Limit, in either case, because of a decline in the Fair Market Value of the Common Stock from its Fair Market Value as of the date hereof, the notice giving rise to the 30-day opportunity to cure shall not be given by the
Company to the Executive until the three (3) year period referred to above has expired. 
 5. Termination. 

(a) The Executive’s employment hereunder may be terminated by the Company or the Executive, as applicable, without any breach of this
Agreement only under the following circumstances and in accordance with subsection (b): 
 (i) Death. The
Executive’s employment hereunder shall terminate upon his death. 
 (ii) Disability. If the Company determines in
good faith that the Executive has incurred a Disability, the Company may give the Executive written notice of its intention to terminate the Executive’s employment. In such event, the Executive’s employment with the Company shall
terminate effective on the 30th day after receipt of such notice by the Executive, provided that within such 30 day period the Executive shall not have returned to full-time performance of his duties. The Executive shall continue to receive his
Annual Base Salary until the 90th day following the date of the Notice of Termination. 
 (iii) Termination for Cause.
The Company may terminate the Executive’s employment hereunder for Cause. 
 (iv) Resignation for Good Reason.
The Executive may resign his employment hereunder for Good Reason. 
 (v) Termination without Cause. The Company may
terminate the Executive’s employment hereunder without Cause. 
 (vi) Resignation without Good Reason. The
Executive may resign his employment hereunder without Good Reason. 
 (b) Notice of Termination. Any termination of the
Executive’s employment by the Company or by the Executive under this Section 5 (other than termination pursuant to subsection (a)(i)) shall be communicated by a written notice from the Board or the Executive to the other, indicating the
specific termination provision in this Agreement relied upon, setting forth in reasonable detail the facts and circumstances claimed to provide a basis for termination of the Executive’s employment under the provision so indicated, and
specifying a Date of Termination 

  
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which, except in the case of Termination by reason of Disability or Termination for Cause pursuant to Section 5(a)(ii) or 5(a)(iii), respectively, shall be at least 90 days following the
date of such notice (a “Notice of Termination”). In the event of Termination for Cause pursuant to Section 5(a)(iii), the Executive shall have the right, if the basis for such Cause is curable, to cure the same within 15 days
following the Notice of Termination for Cause, and Cause shall not be deemed to exist if the Executive cures the event giving rise to Cause within such 15-day period. In the event of Termination by the Executive for Good Reason pursuant to
Section 5(a)(iv), the Company shall have the right, if the basis for such Good Reason is curable, to cure the same within 15 days following the Notice of Termination for Good Reason, and Good Reason shall not be deemed to exist if the Company
cures the event giving rise to Good Reason within such 15-day period. The Executive shall continue to receive his Annual Base Salary, annual bonus and all other compensation and perquisites referenced in Section 4 through the Date of
Termination. 
 6. Severance Payments. 

(a) Termination for any Reason. In the event the Executive’s employment with the Company is terminated for any reason, the Company
shall pay the Executive (or his beneficiary in the event of his death) any unpaid Annual Base Salary that has accrued as of the Date of Termination, any unreimbursed expenses due to the Executive and an amount for accrued but unused sick days and
vacation days. The Executive shall also be entitled to accrued, vested benefits under the Company’s benefit plans and programs as provided therein. The Executive shall be entitled to the additional payments and benefits described
below only as set forth herein. Notwithstanding any provision to the contrary in any outstanding option agreement or in any existing or future equity-based incentive plan of the Company or any award agreement thereunder, in no event will any vested
options of the Executive be forfeited on termination of employment for any reason; provided, however, that in connection with a termination of the Executive for Cause, any vested options shall terminate if they are not exercised within 18 months
following the Date of Termination for Cause. 
 (b) Termination without Cause, Resignation for Good Reason or Termination by Reason of
Death or Disability. Subject to Section 6(c) and (d) and the restrictions contained herein, in the event of the Executive’s Termination without Cause (pursuant to Section 5(a)(v)), Resignation for Good Reason (pursuant to
Section 5(a)(iv)) or termination by reason of death or Disability (pursuant to Section 5(a)(i) or (ii), respectively), the Company shall pay to the Executive the amounts described in subsection (a). In addition, subject to
Section 6(c) and (d) and the restrictions contained herein, the Company shall do all of the following: 
 (i) The
Company shall pay to the Executive (or his beneficiary in the event of his death) an amount equal to the “Severance Amount” described below. For purposes of this Agreement, the Severance Amount is equal to the sum of: 

(A) 2.0 times his Annual Base Salary and 

(B) 2.0 times the greater of (I) the total of all bonuses paid (or payable) to Executive in respect of the fiscal year
ending immediately prior to the Date of Termination, excluding any bonuses that are extraordinary in nature (e.g. a 

  
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transaction related bonus), or (II) the target bonuses for the fiscal year in which the Date of Termination falls, determined in accordance with the Company’s bonus program or programs, if
any. 
 The Severance Amount as so determined shall be payable to the Executive (or his beneficiary) in substantially equal installments over
the 24 month period following the Date of Termination (the “Payment Period”) in accordance with the Company’s regular payroll practices. Notwithstanding the foregoing, in the event of a Resignation for Good Reason based on
clause (II) of the definition of Good Reason, the Severance Amount shall be equal to the sum of 1.0 times the Executive’s Annual Base Salary and 1.0 times the greater of the bonus amounts described in clauses (i)(B)(I) and (II) of this
Section 6(b). 
 (ii) The Company shall offer to Executive continuation of any health plan coverage of Executive in
accordance with the requirements of applicable law (e.g. “COBRA coverage” under the Employee Retirement Income Security Act of 1974), at a monthly cost to Executive that is not greater than the monthly cost that Executive is being charged
for such coverage or coverages as of the Date of Termination. The Company may require Executive to complete and file any election forms that are generally required of other employees to obtain COBRA coverage; and Executive’s COBRA coverage may
be terminable in accordance with applicable law. 
 (iii) Notwithstanding the foregoing, in the event that the Company, in
good faith, and based upon clear and compelling written evidence, determines that, at any time during the Payment Period, Executive is in material breach of his obligations under Section 7 hereof, upon written notice to Executive, the
Company shall be entitled to suspend payment of the Severance Amount, pending final determination of breach by a court of competent jurisdiction. In the event such court finally determines the occurrence of a material breach, the Company shall
be entitled to retain any portion of the Severance Amount then unpaid, and the Company shall have no further obligation with respect thereto. If instead, such court finally determines that no such material breach occurred, upon such
determination the Company shall promptly pay Executive the full amount of any portion of the Severance Amount that was not retained by the Company during such suspension of payment, plus an amount of interest equal to the prime rate (as reported in
The Wall Street Journal on the date prior to the date of payment) plus two percent (2%), and shall also reimburse Executive for his court costs and attorney fees. 

(c) Benefits Provided Upon Termination of Employment. If Executive’s termination or resignation does not constitute a
“separation from service,” as such term is defined under Code Section 409A, Executive shall nevertheless be entitled to receive all of the payments and benefits that Executive is entitled to receive under this on account of his
termination of employment. However, the payments and benefits that Executive is entitled to under this Agreement shall not be provided to Executive until such time as Executive has incurred a “separation from service” within the meaning of
Code Section 409A. 
 (d) Specified Employee Status Under Section 409A. Furthermore, notwithstanding any provision of this
Agreement to the contrary, if the Executive is a “specified employee” (as 

  
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defined by Code Section 409A) at the time of his termination of employment under this Agreement (or, if later, his “separation from service” under Code Section 409A), to the
extent that a payment, reimbursement or benefit under Section 6(b) is considered to provide for a “deferral of compensation” (as determined under Code Section 409A), then such payment, reimbursement or benefit shall not be paid
or provided until six months after the Executive’s separation from service, or his death, whichever occurs first. Any payments, reimbursements or benefits that are withheld under this provision for the first six months shall be payable in a
lump sum on the 181st day after such termination of employment (or, if later, separation from service). 

The restrictions in this Section 6(d) shall be interpreted and applied solely to the minimum extent necessary to comply with the
requirements of Code Section 409A(a)(2)(B). Accordingly, payments, benefits or reimbursements under Section 6(b) or any other part of this Agreement may nevertheless be provided to Executive within the six month period following the date
of the Executive’s termination of employment under this Agreement (or, if later, his “separation from service” under Code Section 409A), to the extent that it would nevertheless be permissible to do so under Code
Section 409A because those payments, reimbursements or benefits are (i) described in Treasury Regulations Section 1.409A-1(b)(9)(iii) (i.e. payments within the limitations therein that are being made on account of an involuntary
termination or termination for good reason, within the meaning of the Treasury Regulations), or (ii) benefits described in Treasury Regulations Section 1.409A-1(b)(9)(v) (e.g. health care benefits). 

(e) Retirement Benefits. Without duplicating any benefits provided under Section 6(b)(ii), following the Executive’s
Retirement from the Company he will be entitled to the benefits set forth on Exhibit B. 
 7. Competition; Nonsolicitation. 

(a) During the Term and, following any termination of Executive’s employment for any reason, for a period equal to (i) the Payment
Period, in the case of a termination of employment for which payments are made pursuant to Section 6(b) hereof, or (ii) 24 months from the date of such termination in the event of a voluntary termination of employment by the Executive
without Good Reason, or a termination by the Company for Cause, the Executive shall be subject to the following restrictions: 

(i) The Executive shall not, without the prior written consent of the Board, directly or indirectly engage in, or have any
interest in, or manage or operate any person, firm, corporation, partnership or business (whether as director, officer, employee, agent, representative, partner, security holder, consultant or otherwise) that engages in any business (other than a
business that constitutes less than 5% of the relevant entity’s net revenue and a proportionate share of its operating income) which competes with any business of the Company or any entity owned by it anywhere in the world; provided,
however, that the Executive shall be permitted to acquire a stock interest in such a corporation provided such stock is publicly traded and the stock so acquired does not represent more than one percent of the outstanding shares of
such corporation. 
 (ii) The Executive shall not render services to any person, firm, corporation, partnership or business
(whether as director, officer, employee, agent, representative, 

  
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partner, security holder, consultant or otherwise) that are designed to advise, assist or otherwise enable such person, firm, corporation, partnership or business to acquire the stock of, an
interest in, or the assets of, another corporation or business operation that, within the 24 month period preceding the Date of Termination, the Company has actively pursued, or had demonstrable plans to pursue, as an acquisition target. 

(b) During the Term and for a period of two years following any termination of the Executive’s employment, the Executive shall not,
directly or indirectly, on his own behalf or on behalf of any other person or entity, whether as an owner, employee, service provider or otherwise, solicit or induce any person who is or was employed by, or providing consulting services to, the
Company or any of its direct or indirect subsidiaries during the twelve-month period prior to the date of such termination, to terminate their employment or consulting relationship with the Company or any such subsidiary. 

(c) In the event the agreement in this Section 7 shall be determined by any court of competent jurisdiction to be unenforceable by reason
of its extending for too great a period of time or over too great a geographical area or by reason of its being too extensive in any other respect, it shall be interpreted to extend only over the maximum period of time for which it may be
enforceable, and/or over the maximum geographical area as to which it may be enforceable and/or to the maximum extent in all other respects as to which it may be enforceable, all as determined by such court in such action. 

8. Nondisclosure of Proprietary Information. 

(a) Except as required in the faithful performance of the Executive’s duties hereunder or pursuant to subsection (c), the Executive shall,
in perpetuity, maintain in confidence and shall not directly, indirectly or otherwise, use, disseminate, disclose or publish, or use for his benefit or the benefit of any person, firm, corporation or other entity any confidential or proprietary
information or trade secrets of or relating to the Company and its direct and indirect subsidiaries, including, without limitation, information with respect to the Company’s and such subsidiaries’ operations, processes, products,
inventions, business practices, finances, principals, vendors, suppliers, customers, potential customers, marketing methods, costs, prices, contractual relationships, regulatory status, compensation paid to employees or other terms of employment,
except for such information which is or becomes publicly available other than as a result of a breach by the Executive of this Section 8, or deliver to any person, firm, corporation or other entity any document, record, notebook, computer
program or similar repository of or containing any such confidential or proprietary information or trade secrets. The parties hereby stipulate and agree that as between them the foregoing matters are important, material and confidential
proprietary information and trade secrets and affect the successful conduct of the businesses of the Company and its direct and indirect subsidiaries (and any successor or assignee thereof). 

(b) Upon termination of the Executive’s employment with the Company for any reason, the Executive shall, upon the Company’s written
request, promptly deliver to the Company all correspondence, drawings, manuals, letters, notes, notebooks, reports, programs, plans, proposals, financial documents, or any other documents concerning the Company’s and its direct and indirect
subsidiaries’ customers, business plans, marketing strategies, products or processes and/or which contain proprietary information or trade secrets. 

  
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 (c) The Executive may respond to a lawful and valid subpoena or other legal process but shall
give the Company the earliest possible notice thereof, shall, as much in advance of the return date as possible, make available to the Company and its counsel the documents and other information sought and shall assist such counsel in resisting or
otherwise responding to such process. 
 9. Injunctive Relief. It is recognized and acknowledged by the Executive that a breach of the covenants
contained in Sections 7 and 8 will cause irreparable damage to the Company and its goodwill, the exact amount of which will be difficult or impossible to ascertain, and that the remedies at law for any such breach will be
inadequate. Accordingly, the Executive agrees that in the event of a breach of any of the covenants contained in Sections 7 and 8, in addition to any other remedy which may be available at law or in equity, the Company shall be entitled to
specific performance and injunctive relief. 
 10. Survival. The expiration or termination of the Term shall not impair the rights or obligations of
any party hereto which shall have accrued hereunder prior to such expiration. 
 11. Binding on Successors. This Agreement shall be binding upon and
inure to the benefit of the Company, the Executive and their respective successors, assigns, personnel and legal representatives, executors, administrators, heirs, distributees, devisees, and legatees, as applicable. 

12. Governing Law. This Agreement shall be governed, construed, interpreted and enforced in accordance with the substantive laws of the State of Ohio.

 13. Validity. The invalidity or unenforceability of any provision or provisions of this Agreement shall not affect the validity or enforceability
of any other provision of this Agreement, which shall remain in full force and effect. 
 14. Notices. Any notice, request, claim, demand, document or
other communication hereunder to any party shall be effective upon receipt (or refusal of receipt) and shall be in writing and delivered personally or sent by telex, telecopy, or certified or registered mail, postage prepaid, as follows: 

 

	 	(a)	If to the Company, to: 

 TransDigm Group Incorporated 

1301 East Ninth Street, Suite 3000 

Cleveland, Ohio 44114 

Attention: Corporate Secretary 

with copies to: 
 TransDigm Group
Incorporated 
 1301 East Ninth Street, Suite 3710 

Cleveland, Ohio 44114 
 Attention:
Chair, Compensation Committee 
 and 

  
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 Baker & Hostetler LLP 

3200 PNC Center 
 1900 East 9th
Street, Suite 3200 
 Cleveland, Ohio 44114 -3482 

Attention: John M. Gherlein, Esq. 
  

	 	(b)	If to the Executive, to him at the home address reflected in the Company’s records 

 with a
copy to: 
 Perry & Karnatz, LLC 

631 W. St. Clair Avenue 

Cleveland, Ohio 44113 
 Attention:
Dominic V. Perry, Esq. 
 or at any other address as any party shall have specified by notice in writing to the other party in accordance with this
Section 14. 
 15. Counterparts. This Agreement may be executed in several counterparts, each of which shall be deemed to be an original, but all
of which together shall constitute one and the same agreement. 
 16. Entire Agreement; Prior Employment Agreement. The terms of this Agreement,
together with the Option Plan and the Option Agreements, are intended by the parties to be the final expression of their agreement with respect to the employment of the Executive by the Company and may not be contradicted by evidence of any prior or
contemporaneous agreement, including, but not limited to, the Prior Employment Agreement and any plans and agreements referenced therein. The parties further intend that this Agreement, and the aforementioned contemporaneous documents, shall
constitute the complete and exclusive statement of its terms and that no extrinsic evidence whatsoever may be introduced in any judicial, administrative, or other legal proceeding to vary the terms of this Agreement. From and after the date
hereof, this Agreement shall supersede the Prior Employment Agreement, except for any rights or obligations which survive pursuant to Section 10 thereof. 

17. Amendments; Waivers. This Agreement may not be modified, amended, or terminated except by an instrument in writing, signed by the Executive and
authorized on behalf of the Company by the Compensation Committee. By an instrument in writing similarly executed, the Executive or the Company may waive compliance by the other party or parties with any provision of this Agreement that such
other party was or is obligated to comply with or perform; provided, however, that such waiver shall not operate as a waiver of, or estoppel with respect to, any other or subsequent failure. No failure to exercise and no delay in
exercising any right, remedy or power hereunder shall preclude any other or further exercise of any other right, remedy or power provided herein or by law or in equity. 

18. No Inconsistent Actions. The parties hereto shall not voluntarily undertake or fail to undertake any action or course of action inconsistent with
the provisions or essential intent of 

  
 13 








 
this Agreement. Furthermore, it is the intent of the parties hereto to act in a fair and reasonable manner with respect to the interpretation and application of the provisions of this
Agreement. 
 19. Arbitration. Any dispute or controversy arising under or in connection with this Agreement shall be settled exclusively by
arbitration, conducted before a panel of three arbitrators in Cleveland, Ohio, in accordance with the rules of the American Arbitration Association then in effect. Judgment may be entered on the arbitrator’s award in any court having
jurisdiction; provided, however, that the Company shall be entitled to seek a restraining order or injunction in any court of competent jurisdiction to prevent any continuation of any violation of the provisions of Section 7 or 8
of this Agreement and the Executive hereby consents that such restraining order or injunction may be granted without the necessity of the Company’s posting any bond; and provided further, that the Executive shall be entitled to
seek specific performance of his right to be paid until the Date of Termination during the pendency of any dispute or controversy arising under or in connection with this Agreement. Each of the parties hereto shall bear its share of the fees
and expenses of any arbitration hereunder. 
 20. Indemnification and Insurance. The Company shall indemnify the Executive to the fullest extent
permitted by the laws of the State of Delaware, as in effect at the time of the subject act or omission, and shall advance to the Executive reasonable attorneys’ fees and expenses as such fees and expenses are incurred (subject to an
undertaking from the Executive to repay such advances if it shall be finally determined by a judicial decision which is not subject to further appeal that the Executive was not entitled to the reimbursement of such fees and expenses) and he shall be
entitled to the protection of any insurance policies the Company shall elect to maintain generally for the benefit of its directors and officers (“Directors and Officers Insurance”) against all costs, charges and expenses incurred or
sustained by him in connection with any action, suit or proceeding to which he may be made a party by reason of his being or having been a director, officer or employee of the Company or any of its subsidiaries or his serving or having served any
other enterprise as a director, officer or employee at the request of the Company (other than any dispute, claim or controversy arising under or relating to this Agreement). The Company covenants to maintain during the Term and for a reasonable
period of time thereafter (which period shall not be less than five years) for the benefit of the Executive (in his capacity as a current or former officer and director of the Company, as applicable) Directors and Officers Insurance providing
customary benefits to the Executive with respect to all periods during the Term. 
 21 Legal Expenses. The Company shall pay the Executive’s
reasonable fees and costs incurred in connection with the preparation and negotiation of this Agreement. 
 22 Post-Termination Assistance. The
Executive agrees that, for a reasonable period after the Executive’s termination of employment for any reason, the Executive will assist the Company and its subsidiaries in defense of any claims that may be made against any of them, to the
extent that such claims may relate to services performed by the Executive for any of them in connection with his employment with the Company. The Executive agrees to promptly inform the Company if the Executive becomes aware of any lawsuits
involving such claims that may be filed against the Company or any of its subsidiaries. The Company agrees to reimburse the Executive for all of the Executive’s reasonable out-of-pocket expenses associated with such assistance, including
reasonable travel expenses. The Company agrees to provide reasonable notice of its need for 

  
 14 








 
such assistance and compensation to Executive for such assistance at a rate equal to $500.00 per hour, based on the actual number of hours and quarter hours of assistance provided. Executive
shall not be required to render more than 40 hours per month of assistance under this provision, but may elect to render more hours per month. The Executive also agrees to the extent not otherwise prohibited by law, to promptly inform the Company if
asked to assist in any investigation of the Company or any of its subsidiaries that may relate to services performed by the Executive for any of them, regardless of whether a lawsuit has then been filed against any of them with respect to such
investigation. 
 [signature page follows] 

  
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 IN WITNESS WHEREOF, the parties have executed this Agreement on the date and year first above written. 

 

			
	TRANSDIGM GROUP INCORPORATED
		
	By:	 	/s/ Gregory Rufus
	Name:	 	Gregory Rufus
	Title:	 	Executive Vice President, Chief Financial Officer and Secretary
	
	EXECUTIVE
	
	/s/ W. Nicholas Howley
	W. Nicholas Howley



  
 16 








 Exhibit A 

The percentage of options as to which vesting will continue following a termination of the Executive’s employment described in the last
sentence of Section 4(c) or following the Executive’s retirement (each a “covered departure”) shall be as set forth in the following table: 
  

																					
	 	  	Options Awarded in
the first three months of fiscal year:	 
	 	  	2015	 	 	2016	 	 	2017	 	 	2018	 	 	2019	 
	 Covered departure after end of fiscal year:
	  				 				 				 				 			
	 2015
	  	 	30	% 	 				 				 				 			
	 2016
	  	 	60	% 	 	 	30	% 	 				 				 			
	 2017
	  	 	80	% 	 	 	60	% 	 	 	30	% 	 				 			
	 2018
	  	 	90	% 	 	 	80	% 	 	 	60	% 	 	 	33	% 	 			
	 2019
	  	 	100	% 	 	 	100	% 	 	 	80	% 	 	 	66	% 	 	 	33	% 
	 2020
	  				 				 	 	100	% 	 	 	100	% 	 	 	66	% 
	 2021
	  				 				 				 				 	 	100	% 


  
 17 








 Exhibit B 

Retirement Benefits 
 The Company will
reimburse the Executive for 100% of the cost of a Medicare Supplement Policy for himself and his spouse following the Executive’s retirement from the Company, which is intended to supplement Medicare coverage for which the Executive and his
spouse shall be responsible. In addition, the Company will reimburse the Executive for 100% of the cost of an Exec-U-Care coverage policy (or if Exec-U-Care coverage is no longer available, substantially similar coverage) for himself and his spouse
to further supplement the health care coverage available to each of them. The purpose of reimbursing the Executive for 100% of the cost of these additional coverages is to reasonably replicate the general health insurance coverage levels provided to
Company executives from time-to-time. The Company will also make available to the Executive the services of Claims Security of America, or a comparable organization, to work with the Executive and his spouse in understanding their medical coverages
and to provide administrative assistance in connection with their medical coverage support. The parties further understand that the providing of these reimbursements and access to administrative assistance services may be modified and/or changed by
the Company, in its discretion, in the event that providing of these reimbursements and access to administrative assistance services creates Company welfare benefit plan Internal Revenue Code discrimination issues or unreasonable tax results upon
the Company or the Executive and his spouse, given the benefit being provided. Should such an event occur, the Company agrees to assure appropriate healthcare coverage continues to be available to the Executive and his spouse on terms as nearly
comparable to the foregoing as practicable under the circumstances. The benefits described herein shall be 

  
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provided for the life of the Executive following his retirement and for the life of his spouse if she survives him. 

  
 19