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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549


FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): January 23, 2007

TransDigm Group Incorporated
(Exact name of registrant as specified in its charter)

Delaware
(State or other jurisdiction of incorporation)
 333-130483
(Commission File Number)
 51-0484716
(I.R.S. Employer Identification No.)

1301 East 9th Street, Suite 3710, Cleveland, Ohio 44114
(216) 706-2939
(Address of principal executive offices and telephone number)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

o
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 2.02 Results of Operations and Financial Condition

        On January 23, 2007, TransDigm Group Incorporated, a Delaware corporation ("TD Group"), issued a press release announcing preliminary selected financial results for its first fiscal quarter ended December 30, 2006. A copy of the press release is furnished with this Current Report on Form 8-K (this "Current Report") as Exhibit 99.1 hereto. The information furnished pursuant to Item 2.02 to this Current Report (including exhibits hereto) shall not be considered "filed" under the Securities Exchange Act of 1934, as amended (the "Exchange Act"), nor shall it be incorporated by reference into future filings by TD Group under the Securities Act of 1933, as amended (the "Securities Act"), or under the Exchange Act, unless TD Group expressly sets forth in such future filing that such information is to be considered "filed" or incorporated by reference therein.

Item 7.01 Regulation FD Disclosure.

        On January 17, 2007, TD Group announced that, in connection with the previously announced pending acquisition of Aviation Technologies, Inc., TransDigm Inc., a wholly-owned subsidiary of TD Group, intended to enter into certain financing transactions, including the issuance and sale of $250,000,000 of senior subordinated notes to be issued as additional notes under the indenture pursuant to which TransDigm Inc. previously issued $275,000,000 of senior subordinated notes in June 2006. On January 29, 2007, TransDigm Inc. will commence distribution of a preliminary confidential offering circular to potential purchasers of the senior subordinated notes.

        A copy of certain excerpts from the preliminary confidential offering circular, which may contain material non-public information, are furnished with this Current Report as Exhibit 99.2 hereto. The information furnished pursuant to Item 7.01 to this Current Report (including exhibits hereto) shall not be considered "filed" under the Exchange Act nor shall it be incorporated by reference into future filings by TD Group under the Securities Act or under the Exchange Act, unless TD Group expressly sets forth in such future filing that such information is to be considered "filed" or incorporated by reference therein.

        The senior subordinated notes will not be registered under the Securities Act or any state securities laws and, unless so registered, may not be offered or sold in the United States except pursuant to an applicable exemption from the registration requirements of the Securities Act and applicable state securities laws. In addition, this Current Report does not and will not constitute an offer to sell or the solicitation of an offer to buy the senior subordinated notes, nor shall there be any sale of the senior subordinated notes in any state in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state.

Item 9.01 Financial Statements and Exhibits

(d)
Exhibits

        The following exhibits are being filed with this Current Report on Form 8-K:

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SIGNATURE

        Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Dated: January 29, 2007

    TRANSDIGM GROUP INCORPORATED

 
 
By:
/s/  GREGORY RUFUS      
     
Name:  Gregory Rufus
Title:    Executive Vice President, Chief Financial Officer and Secretary


EXHIBIT INDEX

Exhibit Number
   Description
99.1   Press Release of TransDigm Group Incorporated, dated January 23, 2007.

99.2
 
Excerpts from Preliminary Confidential Offering Circular, dated January 29, 2007.



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SIGNATURE
EXHIBIT INDEX

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Exhibit 99.1

GRAPHIC


TransDigm Group Announces Preliminary Fiscal 2007 First Quarter Results
- Revises Upward Fiscal 2007 Full Year Financial Guidance

        Cleveland, Ohio, January 23, 2007, PRNewswire-FirstCall—TransDigm Group Incorporated (NYSE: TDG), a leading global designer, producer and supplier of highly engineered aircraft components, today announced preliminary results for the fiscal 2007 first quarter ended December 30, 2006.

        Based on preliminary, unaudited financial results for the first fiscal quarter ended December 30, 2006, TransDigm Group currently expects to report net sales of approximately $123 million, compared to $100 million in net sales for the comparable period last year, an increase of approximately $23 million, or 23%. Net income is expected to be approximately $20 million for the three months ended December 30, 2006, compared to $9 million in net income for the prior year period, an increase of approximately $11 million, or 122%.

        This revenue growth is approximately 75% organic and 25% acquisition driven, with a particularly strong quarter of commercial aftermarket sales being the largest contributor to the organic growth and commercial OEM and defense sales contributing to organic sales growth to a lesser degree.

        In addition, TransDigm Group expects to report EBITDA for the three months ended December 30, 2006 of approximately $54 million, compared to EBITDA of $39 million for the comparable period in the prior year, an of approximately $15 million, or 38%. EBITDA As Defined is expected to be approximately $56 million for the three months ended December 30, 2006, compared to $43 million for the comparable period in the prior year, an increase of approximately $13 million, or 30%.

        TransDigm Group expects to report earnings per share for the three months ended December 30, 2006 of approximately $0.43, compared to $0.19 for the comparable period last year, an increase of approximately $0.24, or 126%. It expects to report adjusted earnings per share for the three months ended December 30, 2006 of approximately $0.46, compared to $0.25 for the comparable period last year, an increase of approximately $0.21, or 84%.

        Please see the attached tables for a reconciliation of EBITDA, EBITDA As Defined, and adjusted net income to net income for the fiscal 2007 first quarter ended December 30, 2006. EBITDA, EBITDA As Defined, adjusted net income, and adjusted earnings per share are defined below under the heading "Non-GAAP Supplemental Information".

        TransDigm plans to report its fiscal 2007 first quarter results on February 12, before the market opens, and will host a conference call for investors and security analysts shortly thereafter.

Revision to Fiscal 2007 Guidance

        Based on these expected fiscal 2007 first quarter results and current market conditions, but excluding any potential impact of the previously announced pending acquisition of Aviation Technologies, Inc. (ATI), TransDigm Group is revising its full year guidance upwards as follows:

        — Revenues are anticipated in the range of $500 million to $510 million;

        — Net income is anticipated in the range of $80 million to $86 million;

        — EBITDA As Defined is anticipated in the range of $227 million to $235 million;

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        — Earnings per share are expected to be in the range of $1.68 to $1.80 per share; and

        — Adjusted earnings per share are expected to be in the range of $1.79 to $1.91 per share.

        As part of the aforementioned conference call, management will discuss both the revised guidance for the base business and the expected impact of the ATI acquisition on fiscal 2007 financial results.

About TransDigm Group

        TransDigm Group, through its wholly-owned subsidiaries, including TransDigm Inc., is a leading global designer, producer and supplier of highly engineered aircraft components for use on nearly all commercial and military aircraft in service today. Major product offerings, substantially all of which are ultimately provided to end-users in the aerospace industry, include ignition systems and components, gear pumps, mechanical/electromechanical actuators and controls, NiCad batteries/chargers, power conditioning devices, hold-open rods and locking devices, engineered connectors, engineered latches and cockpit security devices, lavatory hardware and components, specialized AC/DC electric motors and specialized valving.

Non-GAAP Supplemental Information

        EBITDA, EBITDA As Defined, adjusted net income and adjusted earnings per share are non-GAAP financial measures presented in this press release as supplemental disclosures to net income and reported results. TransDigm Group defines EBITDA as earnings before interest, taxes, depreciation and amortization and defines EBITDA As Defined as EBITDA plus certain non-operating items, certain acquisition-related costs and certain other non-recurring costs, all as more fully described in the attached tables. TransDigm Group defines adjusted net income as net income plus deferred compensation costs, stock option expense, acquisition-related costs and certain other non-recurring expenses, all as more fully described in the attached tables. As used in this press release, adjusted earnings per share means adjusted net income, calculated on a fully-diluted per share basis.

        TransDigm Group presents these non-GAAP financial measures because it believes that they are a useful indicator of its operating performance. TransDigm Group believes that EBITDA is useful to investors because it is frequently used by securities analysts, investors and other interested parties to measure a company's operating performance without regard to items such as interest expense, income tax expense and depreciation and amortization, which can vary substantially from company to company. EBITDA As Defined is used to measure TransDigm Inc.'s compliance with the financial covenant contained in its senior secured credit facility. TransDigm Group's management also uses EBITDA As Defined to review and assess its operating performance and management team in connection with employee incentive programs and the preparation of its annual budget and financial projections. In addition, TransDigm Group's management uses adjusted net income as a measure of comparable operating performance between time periods and among companies as it is reflective of changes in pricing decisions, cost controls and other factors that affect operating performance.

        None of EBITDA, EBITDA As Defined, adjusted net income or adjusted earnings per share is a measurement of financial performance under GAAP and such financial measures should not be considered as an alternative to net income, operating income, cash flows from operating activities or other measures of performance determined in accordance with GAAP. In addition, TransDigm Group's calculation of these non-GAAP financial measures may not be comparable to the calculation of similarly titled measures reported by other companies.

Forward-Looking Statements

        Statements in this press release which are not historical facts are forward-looking statements under the provisions of the Private Securities Litigation Reform Act of 1995, including expectations of future

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performance, profitability, growth and earnings. All statements other than statements of historical fact that address activities, events or developments that the TransDigm Group expects, believes or anticipates will or may occur in the future are forward-looking statements, including, in particular, statements about TransDigm Group's plans, objectives, strategies and prospects regarding, among other things, its financial condition, results of operations, and business. TransDigm Group has identified some of these forward-looking statements with words like "believe," "may," "will," "should," "expect," "intend," "plan," "predict," "anticipate," "estimate" or "continue" and other words and terms of similar meaning. Specifically, statements contained under the heading "Revision to Fiscal 2007 Guidance" constitute forward-looking statements.

        In addition, the selected fiscal 2007 first quarter financial results included in this press release are estimates and subject to change. Neither TransDigm Group nor its auditors have completed their normal quarterly review procedures for the three months ended December 30, 2006 and there can be no assurance that our final results for this three month period will not differ from the estimates set forth in this press release, and the estimates set forth in this press release should not be viewed as a substitute for full interim financial statements prepared in accordance with GAAP.

        All forward-looking statements involve risks and uncertainties which could affect TransDigm Group's actual results and could cause its actual results to differ materially from those expressed in any forward-looking statements made by, or on behalf of, TransDigm Group. These risks and uncertainties include but are not limited to: future terrorist attacks; a decrease in flight hours and TransDigm Group's customers' profitability, both of which are impacted by general economic conditions; TransDigm Group's substantial indebtedness; TransDigm Group's reliance on certain customers; TransDigm Group's fixed price contracts; the U.S. defense budget and risks associated with being a government supplier; failure to maintain government or industry approvals; the pricing review to which certain of TransDigm Group's divisions and subsidiaries have been subject; failure to complete or successfully integrate acquisitions, including the pending acquisition of ATI; future sales of common stock in the market caused by the substantial amount of stock held by affiliates; changes required to be made to our estimated fiscal 2007 first quarter financial results included in this press release upon the completion by TransDigm Group and its auditors of the normal quarterly review procedures; and other factors. Further information regarding the important factors that could cause actual results to differ materially from projected results can be found in TransDigm Group's Annual Report on Form 10-K and any other reports that TransDigm Group has filed with the Securities and Exchange Commission. Except as required by law, TransDigm Group undertakes no obligation to revise or update the forward-looking statements contained in this press release.

Contact: Sean Maroney
Investor Relations
(216) 706-2945		    

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TRANSDIGM GROUP INCORPORATED
ESTIMATED SUPPLEMENTAL INFORMATION
FOR THE THIRTEEN WEEK PERIODS ENDED
DECEMBER 30, 2006 AND DECEMBER 31, 2005
(Amounts in Millions)
(Unaudited)

 
   Thirteen Week
Periods Ended
  
 
   December 30,
2006
   December 31,
2005
  
Net Income   $ 20.3   $ 9.0  
  Depreciation and Amortization     4.2     4.2  
  Interest Expense, net     17.8     19.8  
  Income Tax Provision     11.7     5.6  
   
 
 
EBITDA     54.0     38.6  
Add: As Defined Adjustments:              
  Deferred Compensation Costs(1)     0.5     (3.0 )
  Stock Option Expense(2)     0.8     0.2  
  Acquisition-Related Costs(3)     1.0     0.4  
  Non-Recurring IPO Costs(4)     —     0.7  
  One-Time Special Bonus(5)     —     6.2  
   
 
 
Gross Adjustments     2.3     4.5  
   
 
 
EBITDA As Defined   $ 56.3   $ 43.1  
   
 
 
(1)
Represents the expenses (income) recognized by TransDigm Group under its deferred compensation plans. The amount reflected above for the thirteen week period ended December 31, 2005 includes a reversal of previously recorded amounts charged to expense of $3.8 million.

(2)
Represents the non-cash compensation expense recognized by TransDigm Group under its stock plans.

(3)
Represents costs incurred to integrate acquired businesses into TransDigm Group's operations, purchase accounting adjustments to inventory that were charged to cost of sales when the inventory was sold and other acquisition-related costs.

(4)
Represents non-recurring costs and expenses incurred by TransDigm Group related to the initial public offering.

(5)
Represents the one-time special bonus paid to certain members of management in November 2005.

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TRANSDIGM GROUP INCORPORATED
ESTIMATED SUPPLEMENTAL INFORMATION
FOR THE THIRTEEN WEEK PERIODS ENDED
DECEMBER 30, 2006 AND DECEMBER 31, 2005
(Amounts in Millions, except per share data) (Unaudited)

 
   Thirteen Week
Periods Ended
  
 
   December 30,
2006
   December 31,
2005
  
Net Income   $ 20.3   $ 9.0  
Gross Adjustments     2.3     4.5  
Tax Adjustment     (0.8 )   (1.7 )
   
 
 
Adjusted Net Income   $ 21.8   $ 11.8  
   
 
 
Basic Earnings per Share   $ 0.45   $ 0.20  
Diluted Earnings per Share   $ 0.43   $ 0.19  
Adjusted Basic Earnings per Share   $ 0.49   $ 0.27  
Adjusted Diluted Earnings per Share   $ 0.46   $ 0.25  
Weighted-Average Shares Outstanding:              
  Basic     44.8     44.2  
  Diluted     47.8     46.7  

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TransDigm Group Announces Preliminary Fiscal 2007 First Quarter Results - Revises Upward Fiscal 2007 Full Year Financial Guidance
TRANSDIGM GROUP INCORPORATED ESTIMATED SUPPLEMENTAL INFORMATION FOR THE THIRTEEN WEEK PERIODS ENDED DECEMBER 30, 2006 AND DECEMBER 31, 2005 (Amounts in Millions) (Unaudited)
TRANSDIGM GROUP INCORPORATED ESTIMATED SUPPLEMENTAL INFORMATION FOR THE THIRTEEN WEEK PERIODS ENDED DECEMBER 30, 2006 AND DECEMBER 31, 2005 (Amounts in Millions, except per share data) (Unaudited)

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Exhibit 99.2

EXCERPTS FROM PRELIMINARY CONFIDENTIAL OFFERING CIRCULAR, DATED JANUARY 29, 2007

        Unless the context otherwise requires, references to "TransDigm," "we," "us," "our" and similar references refer to TransDigm Group Incorporated ("TD Group") and its direct and indirect subsidiaries, including TransDigm Inc. The offering of 73/4% senior subordinated notes due 2014 contemplated by the Preliminary Confidential Offering Circular, dated January 29, 2007 is being made in connection with the following series of transactions: (i) the acquisition of Aviation Technologies, Inc. ("ATI") and (ii) the amendment to the senior secured credit facility of TransDigm Inc. which will provide for, among other things, an additional term loan of $180.0 million, the proceeds from which will be used to finance, in part, the acquisition of ATI and to pay related transaction expenses, and a $50.0 million increase in the revolving credit facility to the senior secured credit facility, none of which will be drawn in connection with the closing of the acquisition of ATI. The term "Transactions" refers to the above described transactions.


Recent Developments

        While we have not yet finalized our financial statements for our first quarter ended December 30, 2006, we currently expect to report net sales of approximately $123 million for the three months ended December 30, 2006 compared to $100 million in net sales for the comparable period last year. We expect to report net income, EBITDA and EBITDA As Defined for the three months ended December 30, 2006 of approximately $20 million, $54 million and $56 million, respectively, compared to net income, EBITDA and EBITDA As Defined of $9 million, $39 million and $43 million, respectively, for the comparable period last year. The net sales growth for the three months ended December 30, 2006 is approximately 75% organic and 25% acquisition driven, with a particularly strong quarter of commercial aftermarket sales being the largest contributor to the organic sales growth and commercial OEM and defense sales contributing to organic sales growth to a lesser degree.

        These selected first quarter financial results are estimates and are subject to change. We and our auditors have not completed each of our and their normal quarterly review procedures for the three months ended December 30, 2006 and there can be no assurance that our final results for this three month period will not differ from these estimates, including as a result of quarter-end closing procedures or review adjustments and any such changes could be material. In addition, these estimates should not be viewed as a substitute for full interim financial statements prepared in accordance with GAAP or as a measure of our performance. Finally, investors should be aware that our expected results for the three-month period ended December 30, 2006 are unaudited. As a result of the foregoing considerations, investors are cautioned not to place undue reliance on this preliminary financial information. See "Risk Factors" and "Forward-Looking Statements."

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        The following is a reconciliation of EBITDA and EBITDA As Defined to net income (all figures represent approximations):

 
   Three Months Ended
December 30, 2006
 
   (in millions)
Net income   $ 20
Add:      
  Depreciation and amortization     4
  Interest expense, net     18
  Income tax provision (benefit)     12
   
EBITDA     54
Add:      
  Acquisition-related costs(1)     1
  Non-cash compensation and deferred compensation costs(2)     1
   
EBITDA As Defined   $ 56
   
(1)
Represents costs incurred to integrate acquired businesses into TransDigm Group's operations, purchase accounting adjustments to inventory that were charged to cost of sales when the inventory was sold and other acquisition-related costs.

(2)
Represents (i) the expenses recognized by TransDigm Group under its deferred compensation plans and (ii) the non-cash compensation expense recognized by TransDigm Group under its stock plans.

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Summary Historical and Pro Forma Consolidated Financial Data

        TD Group was formed in July 2003 under the name TD Holding Corporation to facilitate the consummation of the Mergers. TD Group does not have any operations other than through its ownership of its direct and indirect subsidiaries.

        The following table sets forth summary historical consolidated financial and other data of TD Group for the fiscal years ended September 30, 2006, 2005 and 2004, which have been derived from TD Group's audited consolidated financial statements. Separate historical financial information for TransDigm Inc. is not presented since TD Group has no operations or assets (other than immaterial cash balances) separate from its investment in TransDigm Inc.

        On July 9, 2004, TransDigm Inc. acquired all of the outstanding capital stock of Avionic Instruments, Inc., or Avionic. On December 31, 2004, Skurka Aerospace Inc., or Skurka, acquired certain assets and assumed certain liabilities of Skurka Engineering Company. On January 28, 2005, TransDigm Inc. acquired all of the outstanding capital stock of Fluid Regulators Corporation, or Fluid Regulators. On June 30, 2005, Skurka acquired an aerospace motor product line from Eaton Corporation. On May 1, 2006, Skurka acquired certain assets and assumed certain liabilities of Electra-Motion, Inc. On June 12, 2006, TransDigm Inc. acquired all of the outstanding capital stock of Sweeney Engineering Corp., or Sweeney Engineering. All of the acquisitions were accounted for as purchases. The results of operations of the acquired entities, businesses and product line are included in TD Group's consolidated financial statements from the date of each of the acquisitions.

        The following table also sets forth summary pro forma consolidated financial data as of and for the twelve-month period ended September 30, 2006, which we have derived from and should be read in conjunction with our unaudited pro forma consolidated financial and other data included elsewhere herein. The unaudited consolidated pro forma statement of operations data set forth below gives effect to the Transactions as if they had occurred on October 1, 2005 and the unaudited consolidated pro forma balance sheet data set forth below gives effect to the Transactions as if they had occurred as of September 30, 2006. The summary pro forma consolidated financial information set forth below should not be considered indicative of actual results that would have been achieved had the Transactions occurred on the respective dates indicated and do not purport to indicate balance sheet data or results of operations as of any future date or for any future period. We cannot assure you that the assumptions used in the preparation of the pro forma consolidated financial information will prove to be correct.

        We present below certain financial information based on our EBITDA, EBITDA As Defined and Adjusted EBITDA As Defined. None of EBITDA, EBITDA As Defined or Adjusted EBITDA As Defined is a measurement of financial performance under GAAP, and none of these financial measures should be considered an alternative to net income or operating cash flows determined in accordance with GAAP, and our calculation of EBITDA, EBITDA As Defined and Adjusted EBITDA As Defined may not be comparable to the calculation of similarly titled measures reported by other companies. While we believe that the presentation of EBITDA, EBITDA As Defined and Adjusted EBITDA As Defined will enhance an investor's understanding of our operating performance, the use of each of EBITDA, EBITDA As Defined and Adjusted EBITDA As Defined as analytical tools has limitations and you should not consider any of them in isolation, or as a substitute for an analysis of our results of operations as reported in accordance with GAAP. For a reconciliation of EBITDA, EBITDA As Defined and Adjusted EBITDA As Defined to net income, please refer to the table below. For additional information regarding these non-GAAP financial measures, including a more detailed description with respect to the limitations of these non-GAAP financial measures, please refer to the Annual Report on Form 10-K of TD Group for the fiscal year ended September 30, 2006, filed with the Securities and Exchange Commission on November 28, 2006 (the "Annual Report").

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        The information presented below should be read together with "Pro Forma Condensed Consolidated Financial Data," "Management's Discussion and Analysis of Financial Condition and Results of Operations" and the consolidated financial statements and accompanying notes included elsewhere herein and in the Annual Report.

 
    
    
    
   Pro Forma for the
Twelve-Month
Period Ended
September 30,
2006
 
   Fiscal Years Ended September 30,
 
   2004
   2005
   2006
 
   (in thousands)

   (unaudited)
Statement of Operations Data:                        
Net sales   $ 300,703   $ 374,253   $ 435,164   $ 533,702
Gross profit(1)     136,505     184,270     221,290     263,938
   
 
 
 
Operating expenses:                        
  Selling and administrative     31,201     38,943     48,309     66,408
  Amortization of intangibles     10,325     7,747     6,197     13,197
  Refinancing costs(2)     —     —     48,617     48,617
   
 
 
 
Income from operations(1)     94,979     137,580     118,167     135,716
Interest expense, net     74,675     80,266     76,732     110,860
   
 
 
 
Income before income taxes     20,304     57,314     41,435     24,856
Income tax provision     6,682     22,627     16,318     9,007
   
 
 
 
Net income   $ 13,622   $ 34,687   $ 25,117   $ 15,849
   
 
 
 
 
   As of September 30,
   Pro Forma as of
September 30,
2006
 
   2004
   2005
   2006
 
   (in thousands)

   (unaudited)
Balance Sheet Data:                        
Cash and cash equivalents(3)   $ 48,498   $ 104,221   $ 61,217   $ 48,321
Marketable securities     50,601     —     —     —
Working capital(4)     179,385     118,559     190,742     217,013
Total assets     1,345,912     1,427,748     1,416,712     1,903,177
Long-term debt, including current portion     892,788     889,846     925,000     1,355,000
Stockholders' equity     297,412     333,107     363,041     363,041

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   Fiscal Years Ended September 30,
   Pro Forma for the
Twelve-Month
Period Ended
September 30, 2006
  
 
   2004
   2005
   2006
  
 
   (in thousands)

   (unaudited)

  
Other Financial Data:                          
Cash flows provided by (used in):                          
  Operating activities   $ 111,139   $ 80,695   $ 3,058   $ 17,698  
  Investing activities     (77,619 )   (20,530 )   (35,323 )   (48,589 )
  Financing activities     (3,924 )   (4,442 )   (10,739 )   (15,183 )
Depreciation and amortization     18,303     16,956     16,111     24,987  
Capital expenditures     5,416     7,960     8,350     9,948  
Ratio of earnings to fixed charges(5)     1.3 x   1.7 x   1.5 x   1.2 x
Other Data:                          
EBITDA(6)   $ 113,282   $ 154,536   $ 134,278   $ 160,703  
EBITDA, margin(7)     37.7 %   41.3 %   30.9 %   30.1 %
EBITDA As Defined(6)   $ 139,084   $ 164,240   $ 194,437   $ 225,693  
EBITDA As Defined, margin(7)     46.3 %   43.9 %   44.7 %   42.3 %
Adjusted EBITDA As Defined(6)   $ 238,502  
(1)
Gross profit and income from operations include the effect of charges relating to purchase accounting adjustments to inventory associated with the acquisition of various businesses and a product line during the pro forma twelve-month period ended September 30, 2006 and for the fiscal years ended September 30, 2006, 2005 and 2004 of $5.0 million, $200,000, $1.5 million and $18.5 million, respectively.

(2)
Represents costs incurred in connection with the refinancing transaction completed by TransDigm in June 2006 (the "June 2006 Refinancing"), including the premium paid to redeem the 83/8% Senior Subordinated Notes of $25.6 million, the write off of debt issue costs of $22.9 million and other expenses of $0.1 million.

(3)
On November 10, 2005, TransDigm Inc. paid a cash dividend of approximately $98.0 million to TransDigm Holding Company, or TransDigm Holdings, and made bonus payments of approximately $6.2 million to certain members of our management. TransDigm Holdings used all of the proceeds received from TransDigm Inc. to pay a cash dividend to TD Group. On November 10, 2005, TD Group entered into the TD Group loan facility and used the net proceeds received from borrowings thereunder of approximately $193.8 million, together with substantially all of the proceeds received from the dividend payment from TransDigm Holdings, to (i) prepay the entire outstanding principal amount and all accrued and unpaid interest on its senior unsecured promissory notes issued in connection with its acquisition of TransDigm Holdings in July 2003, which payments in the aggregate were equal to approximately $262.7 million, and (ii) make certain distributions to members of our management who participated in our deferred compensation plans, which distributions in the aggregate were equal to approximately $26.0 million.

(4)
Computed as total current assets less total current liabilities.

(5)
For purposes of computing the ratio of earnings to fixed charges, earnings consist of earnings before income taxes plus fixed charges. Fixed charges consist of interest expense, amortization of debt issuance costs and the portion (approximately 33%) of rental expense that management believes is representative of the interest component of rental expense.

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(6)
The following is a reconciliation of EBITDA, EBITDA As Defined and Adjusted EBITDA As Defined to net income:

 
   Fiscal Years Ended September 30,
   Pro Forma for the
Twelve-Month
Period Ended
September 30, 2006
 
   2004
   2005
   2006
 
   (in thousands)

   (unaudited)
Net income   $ 13,622   $ 34,687   $ 25,117   $ 15,849
Add:                        
  Depreciation and amortization     18,303     16,956     16,111     24,987
  Interest expense, net     74,675     80,266     76,732     110,860
  Income tax provision     6,682     22,627     16,318     9,007
   
 
 
 
EBITDA     113,282     154,536     134,278     160,703
Add:                        
  Inventory purchase accounting adjustments(a)     18,471     1,493     200     5,031
  Acquisition integration costs(b)     1,162     1,363     1,032     1,032
  Non-cash compensation and deferred compensation costs(c)     6,169     6,848     988     988
  One-time special bonus payments(d)     —     —     6,222     6,222
  Acquisition earnout costs(e)     —     —     450     450
  Refinancing costs(f)     —     —     48,617     48,617
  Non-recurring IPO expenses(g)     —     —     2,650     2,650
   
 
 
 
EBITDA As Defined   $ 139,084   $ 164,240   $ 194,437   $ 225,693
   
 
 
 
Add:                        
  Expected cost savings due to permanent headcount reduction(h)     —     —     —   $ 2,856
  Expected cost savings due to elimination of corporate overhead expenses(i)     —     —     —     845
  Non-recurring costs(j)     —     —     —     669
  CDA, Sweeney Engineering and Electra-Motion pre-acquisition EBITDA(k)     —     —     —     8,409
   
 
 
 
Adjusted EBITDA As Defined     —   $ —   $ —   $ 238,472
   
 
 
 

6

(7)
The EBITDA margin represents the amount of EBITDA as a percentage of net sales. The EBITDA As Defined margin represents the amount of EBITDA As Defined as a percentage of net sales.

7


CAPITALIZATION

        The following table sets forth the cash and cash equivalents and the consolidated capitalization of TD Group as of September 30, 2006, on a historical basis and on a pro forma basis to give effect to the Transactions as if each of the Transactions had occurred on that date.

 
   As of September 30, 2006
 
   Actual
   Pro Forma
 
   (in thousands)
Cash and cash equivalents   $ 61,217   $ 48,321
   
 
Debt:            
  Senior Secured Credit Facility(1)   $ 650,000   $ 830,000
  73/4% Senior Subordinated Notes due 2014     275,000     525,000
  Total long-term debt     925,000     1,355,000
   
 
Stockholders' equity     363,041     363,041
   
 
  Total capitalization   $ 1,288,041   $ 1,718,041
   
 
(1)
The senior secured credit facility currently consists of a $650.0 million term loan facility and a revolving loan facility with a total borrowing availability of $150.0 million. As of September 30, 2006, $1.2 million of letters of credit were outstanding and $148.8 million of borrowings were available under the revolving loan facility. In connection with the Transactions, we intend to enter into an amendment to our senior secured credit facility which will provide for, among other things, an additional term loan of $180.0 million, the proceeds from which will be used to finance, in part, the acquisition of ATI and to pay related transaction expenses, and a $50.0 million increase in the revolving credit facility that is available under our senior secured credit facility, none of which will be drawn in connection with the closing of the acquisition of ATI. Following the closing of the acquisition of ATI, the senior secured credit facility will consist of an $830.0 million term loan facility, all of which will be fully drawn, and a $200.0 million revolving loan facility, with total borrowing availability of $198.8 million.

8


PRO FORMA CONDENSED CONSOLIDATED FINANCIAL DATA

        The following pro forma condensed consolidated financial data is based on the historical financial statements of TD Group and ATI, adjusted to give pro forma effect to the Transactions. The pro forma condensed consolidated balance sheet as of September 30, 2006 gives effect to the Transactions as if they had occurred as of September 30, 2006. The pro forma condensed consolidated statement of income for the twelve-month period ended September 30, 2006 gives effect to the Transactions as if they had been consummated on October 1, 2005, the first day of TD Group's most recently completed fiscal year.

        Assumptions underlying the pro forma adjustments necessary to fairly present this pro forma information are described in the accompanying notes, which should be read in conjunction with this pro forma condensed consolidated financial data. The pro forma adjustments described in the accompanying notes have been made based on available information and, in the opinion of management, are reasonable. The pro forma condensed consolidated financial data should not be considered indicative of actual results that would have been achieved had the Transactions occurred on the respective dates indicated and do not purport to indicate balance sheet data or results of operations as of any future date or for any future period. We cannot assure you that the assumptions used in the preparation of the pro forma condensed consolidated financial data will prove to be correct.

        The proposed acquisition of ATI by TransDigm will be accounted for as a purchase in conformity with Statement of Financial Accounting Standards, or SFAS, No. 141, Business Combinations, with intangible assets recorded in accordance with SFAS No. 142, Goodwill and Other Intangible Assets. The excess of the purchase price over the historical basis of the net assets to be acquired has been allocated in the accompanying pro forma condensed consolidated financial data based on preliminary valuation estimates and certain assumptions that management believes are reasonable. The actual valuation will be subject to the valuation of our assets and our liabilities as of the date the acquisition is finalized and, therefore, such allocation and the resulting effect on our consolidated financial statements may differ from the pro forma amounts included herein, and such differences may be material.

        The consolidated financial statements of ATI utilized to prepare the following pro forma condensed consolidated financial information include ATI's audited consolidated financial statements for the year ended December 31, 2005 and ATI's unaudited consolidated financial statements for the nine month periods ended September 30, 2005 and 2006. The unaudited consolidated financial statements of ATI utilized to prepare the following pro forma condensed consolidated financial information do not reflect as compensation expense share-based payment transactions in accordance with SFAS No. 123(R), Share Based Payments. The pro forma adjustments do not attempt to reflect ATI's stock option grants in accordance with SFAS No. 123(R), as all outstanding ATI stock options will be cancelled upon the closing of the proposed acquisition. In addition, the unaudited consolidated financial statements of ATI utilized to prepare the following pro forma condensed consolidated financial information have not been audited or reviewed by ATI's independent accountants, and any such audit or review could result in adjustments to ATI's unaudited consolidated financial statements, and any such adjustments could be material.

9


TransDigm Group Incorporated
Unaudited Pro Forma Condensed Consolidated Balance Sheet
as of September 30, 2006
(In thousands)

 
   TD Group
   ATI
   Adjustments for the Acquisition of ATI
   Adjustments for Acquisition Financing
   Pro Forma
Assets                              
Current Assets:                              
  Cash and cash equivalents   $ 61,217   $ 304   $ (432,500 )(1) $ 419,300 (1) $ 48,321
  Accounts receivable, net     65,568     15,071     —     —     80,639
  Income taxes receivable     9,366     1,709     —     —     11,075
  Inventories     89,243     16,987     4,371   (2)   —     110,601
  Deferred income taxes     7,390     1,941     9,706   (2)   —     19,037
  Prepaid expenses and other     1,397     753     —     —     2,150
   
 
 
 
 
    Total current assets     234,181     36,765     (418,423 )   419,300     271,823
   
 
 
 
 
Property and equipment, net     62,851     14,172     —     —     77,023
Goodwill     877,829     75,619     225,332   (2)   —     1,178,780
Other intangible assets, net     225,959     33,594     89,406   (2)   —     348,959
Debt issue costs, net     14,872     1,404     (1,404 )(2)   10,700 (1)   25,572
Other     1,020     —     —     —     1,020
   
 
 
 
 
  Total assets   $ 1,416,712   $ 161,554   $ (105,089 ) $ 430,000   $ 1,903,177
   
 
 
 
 
Liabilities and stockholders' equity                              
Current Liabilities:                              
  Accounts payable   $ 18,764   $ 4,811   $ —   $ —   $ 23,575
  Accrued liabilities     24,675     7,332     (772 )(1)   —     31,235
  Current portion of long-term debt     —     356     (356 )(1)   —     —
   
 
 
 
 
    Total current liabilities     43,439     12,499     (1,128 )   —     54,810
   
 
 
 
 
Long-term debt, less current portion     925,000     38,773     (38,773 )(1)   430,000 (1)   1,355,000
Deferred income taxes     78,109     10,762     33,974   (2)   —     122,845
Other non-current liabilities     7,123     358     —     —     7,481
   
 
 
 
 
  Total liabilities     1,053,671     62,392     (5,927 )   430,000     1,540,136
   
 
 
 
 
  Total stockholders' equity     363,041     99,162     (99,162 )(2)   —     363,041
   
 
 
 
 
  Total liabilities and stockholders' equity   $ 1,416,712   $ 161,554   $ (105,089 ) $ 430,000   $ 1,903,177
   
 
 
 
 

10


TransDigm Group Incorporated
Notes to Unaudited Pro Forma Condensed Consolidated Balance Sheet
as of September 30, 2006

(1)
Set forth below are the estimated sources and uses of funds pertaining to the Transactions. The sources and uses below assume that the Transactions were consummated on September 30, 2006.

Sources of Funds
   (in thousands)
Borrowings under senior secured credit facility   $ 180,000
Senior subordinated notes     250,000
Cash of TD Group     13,200
   
  Total sources   $ 443,200
   

Use of Funds
 
 
 
Payment to ATI equityholders   $ 387,549
Payment of expenses on behalf of ATI equityholders     2,550
Repayment of current portion of ATI existing debt     356
Repayment of long-term portion of ATI existing debt     38,773
Payment of accrued interest on ATI existing debt     772
Debt issue costs(a)     10,700
TransDigm costs associated with acquisition     2,500
   
  Total uses   $ 443,200
   
(a)
Represents the estimated fees and commissions to be paid by us in connection with the financing for the Transactions.

11


TransDigm Group Incorporated
Notes to Unaudited Pro Forma Condensed Consolidated Balance Sheet
as of September 30, 2006

(2)
The preliminary allocation of the purchase price to the fair values of the net assets acquired in connection with the proposed acquisition of ATI is as follows:

Purchase Price Allocation
    
   (In thousands)
  
Payment to ATI equityholders       $ 387,549  
Plus: Extinguishment of ATI's existing indebtedness:            
    Current portion         356  
    Long-term portion         38,773  
    Accrued interest         772  
       
 
          39,901  
  Payment of expenses on behalf of ATI equityholders         2,550  
       
 
Purchase price         430,000  
Plus: Direct acquisition costs         2,500  
       
 
  Total consideration       $ 432,500  
       
 

Total consideration
 
 
 
$
432,500
 
Less: Extinguishment of debt         39,901  
Less: Historical stockholders' equity         99,162  
       
 
  Total acquisition consideration in excess of net book value       $ 293,437  
       
 
Preliminary allocation of excess purchase price over net assets acquired and related purchase accounting adjustments(a):            
    Inventories       $ 4,371  
    Current deferred income taxes(b)         9,706  
    Goodwill         225,332  
    Other intangible assets(c)         89,406  
    Other assets(d)         (1,404 )
    Noncurrent deferred income taxes(c)         (33,974 )
       
 
      Total       $ 293,437  
       
 

12

(a)
The final appraisal and purchase price allocation is not yet completed and, upon completion, the fair value of depreciable assets will be adjusted accordingly. For purposes of this pro forma presentation, management has estimated that the fair values of the depreciable assets approximate their historical values.

(b)
Represents a current tax benefit of approximately $27.0 million relating to compensation expense to be recognized with respect to stock options that are to be cancelled upon the closing of the ATI acquisition, the write-off of historical debt issue costs relating to ATI indebtedness that will be repaid upon the closing of the acquisition, management bonuses, severance and other similar payments payable upon the closing of the acquisition and certain professional fees to be borne by the former ATI equityholders in connection with the closing of the acquisition.

(c)
The adjustment to other intangible assets is based on management's preliminary estimate of identifiable intangible assets as follows (dollars in thousands)

Intangible Assets
   Estimated Useful Life
    
  
Trademarks   Indefinite   $ 40,000  
Unpatented technology   20 years     80,000  
Order backlog   1 year     3,000  
       
 
          123,000  
Historical carrying value of other intangible assets        
  as of September 30, 2006         (33,594 )
       
 

Net adjustment
 
 
 
$
89,406
 
       
 

Deferred tax liability on increase in intangible assets
 
 
 
$
(33,974
)
       
 
(d)
Represents adjustments to write-off the unamortized debt issue costs of ATI's existing indebtedness being repaid in connection with the closing of the acquisition.

13


TransDigm Group Incorporated
Unaudited Pro Forma Condensed Consolidated Statement of Operations
for the Twelve-Month Period Ended September 30, 2006
(In thousands)

 
   TD Group
   ATI(1)
   Adjustments for the
Acquisition of
ATI(2)
   Adjustments
for Acquisition
Financing(3)
   Pro Forma
Net sales   $ 435,164   $ 98,538   $ —   $ —   $ 533,702
Cost of sales     213,874     51,519     4,371   (a)   —     269,764
   
 
 
 
 
Gross profit     221,290     47,019     (4,371 )         263,938
   
 
 
 
 
Operating expenses:                              
  Selling and administrative     48,309     18,099     —     —     66,408
  Amortization of intangibles     6,197     1,232     5,768   (b)   —     13,197
  Refinancing costs     48,617           —     —     48,617
   
 
 
 
 
    Total operating expenses     103,123     19,331     5,768           128,222
   
 
 
 
 
Income from operations     118,167     27,688     (10,139 )         135,716
   
 
 
 
 
Interest expense, net     76,732     3,547     (3,547 )(c)   34,128   (a)   110,860
Income before income taxes     41,435     24,141     (6,592 )   (34,128 )   24,856
Income tax provision     16,318     8,163     (2,505 )(d)   (12,969 )(b)   9,007
   
 
 
 
 
Net income   $ 25,117   $ 15,978   $ (4,087 ) $ (21,159 ) $ 15,849
   
 
 
 
 
(1)
TD Group's fiscal year ends on September 30. ATI's fiscal year ends on December 31. ATI's statement of income for the twelve-month period ended September 30, 2006 (which coincides with TD Group's 2006 fiscal year) was prepared by adding ATI's statement of income data for its fiscal year ended December 31, 2005 to ATI's statement of income data for the nine-month period ended September 30, 2006 and subtracting ATI's statement of income data for the nine-month period ended September 30, 2005.

(2)
Represents the adjustments necessary to give effect to the acquisition of ATI. Adjustments (a) and (b) are based on a preliminary allocation of the purchase price, and the definitive allocation of the purchase price will not be completed until following the closing of the acquisition. For purposes of this pro forma presentation, management has estimated that the fair values of the depreciable assets approximate their historical values and therefore no adjustment to the historical carrying value of those assets has been made.

(a)
Represents the inventory purchase accounting adjustment that will be charged to cost of sales as the inventory on hand when the ATI acquisition is consummated is sold.

14


TransDigm Group Incorporated
Notes to Unaudited Pro Forma Condensed Consolidated Statement of Operations
for the Twelve-Month Period Ended September 30, 2006


Amortizable Intangible Assets
   Estimated
Useful Life
   Estimated
Fair Value
   Pro Forma
Adjustment
  
Unpatented technology   20 years   $ 80,000   $ 4,000  
Order backlog   1 year     3,000     3,000  
       
 
 
          83,000     7,000  
Historical ATI amortization               (1,232 )
             
 
Net adjustment             $ 5,768  
             
 
(3)
Represents the adjustments necessary to give effect to the financing for the Transactions.

(a)
Represents interest expense of $13.3 million and $19.4 million on the $180.0 million new term loan facility at an interest rate of 7.37% and the issuance of $250.0 million of senior subordinated notes at an interest rate of 7.75%, respectively. Also includes $1.4 million of related debt issue costs that are amortized on a straightline basis over the term of the relevant financing component.

(b)
Represents the tax effect of pro forma adjustment for interest expense to income before income taxes and is based on an estimated combined federal and state statutory tax rate of 38%.

15


DESCRIPTION OF THE SENIOR SECURED CREDIT FACILITY

        As part of the June 2006 Refinancing, we entered into our senior secured credit facility, which provides for a $650.0 million term loan facility and a $150.0 million revolving loan facility. Upon the closing of the June 2006 Refinancing, the entire term loan facility was drawn to fund, together with the net proceeds from the offering of our senior subordinated notes sold in June 2006 and a portion of our existing cash balances, (1) the repayment of the entire $288.4 million of principal amount outstanding under our former senior secured credit facility, (2) the repayment of the entire $200.0 million of principal amount outstanding under the TD Group loan facility, (3) the purchase of all of the 83/8% Senior Subordinated Notes that were tendered in connection with the tender offer for such notes totaling approximately $399.7 million, (4) the payment of accrued and unpaid interest on all such indebtedness and (5) the payment of all premiums and transaction expenses associated therewith. Under the terms of the senior secured credit facility, TransDigm Inc. has the right to request (but no lender is committed to provide) additional term loans and/or revolving loans of up to $250.0 million in the aggregate (which will be increased to $300.0 million upon the effectiveness of the amendment to our senior secured credit facility), subject to the satisfaction of customary conditions, including pro forma compliance with the financial covenants contained in the senior secured credit facility after giving effect to any such incremental term loan borrowings. As of September 30, 2006, $1.2 million of letters of credit were outstanding and $148.8 million of borrowings were available under the revolving loan facility under the senior secured credit facility. Upon the effectiveness of the amendment described below, we will have $198.8 million of borrowings available under the revolving term loan facility.

        In connection with the ATI acquisition, we intend to enter into an amendment to our senior secured credit facility which will provide for, among other things, (i) an additional term loan of $180.0 million, the proceeds from which will be used, together with the net proceeds from the expected issuance of our senior subordinated notes and a portion of our available cash balances, to finance the acquisition of ATI and to pay related transaction expenses, and (ii) a $50.0 million increase in the revolving credit facility that is available under our senior secured credit facility, none of which will be drawn in connection with the closing of the acquisition of ATI. In addition, the $250.0 million uncommitted incremental loan facility will be increased to $300.0 million. The requisite lenders under our senior secured credit facility have approved the amendment described above, and this amendment will become effective upon the satisfaction of customary conditions, including that the acquisition of ATI is consummated substantially simultaneously with the funding of the additional term loans contemplated by the amendment and that we have received gross cash proceeds of not less than $250.0 million from the offering of the new notes.

Certain Covenants

Financial Covenant

        The senior secured credit facility includes a financial maintenance covenant requiring that TransDigm Inc. comply, on a pro forma basis, with a consolidated secured debt ratio test. Such covenant, however, inures only to the benefit of the revolving lenders.

        Consolidated secured debt ratio is defined in the senior secured credit facility, as of any date, as the ratio of the total indebtedness of TransDigm Inc. on a consolidated basis on such date that is secured by first-priority liens on the same collateral as the collateral securing the senior secured credit facility to Consolidated EBITDA (as defined) for the period of four consecutive fiscal quarters most recently ended on or prior to such date. The senior secured credit facility currently provides that the secured debt ratio may not be greater than 4.75 to 1 for June 30, 2006 through September 30, 2007; 4.50 to 1 for October 1, 2007 through September 30, 2008; and 4.25 to 1 thereafter. Upon the effectiveness of the amendment to our senior secured credit facility that is described above, the secured debt ratio covenant will be changed as follows: the secured debt ratio may not be greater than 4.75 to 1 for June 30, 2006 through December 31, 2006; 5.50 to 1 for January 1, 2007 through September 30, 2007; 5.25 to 1 for October 1, 2007 through June 30, 2008; 4.75 to 1 for July 1, 2008 through December 31, 2008; and 4.50 to 1 thereafter.

16



QuickLinks

EXCERPTS FROM PRELIMINARY CONFIDENTIAL OFFERING CIRCULAR, DATED JANUARY 29, 2007
Recent Developments
Summary Historical and Pro Forma Consolidated Financial Data
CAPITALIZATION
PRO FORMA CONDENSED CONSOLIDATED FINANCIAL DATA
TransDigm Group Incorporated Unaudited Pro Forma Condensed Consolidated Balance Sheet as of September 30, 2006 (In thousands)
TransDigm Group Incorporated Notes to Unaudited Pro Forma Condensed Consolidated Balance Sheet as of September 30, 2006
TransDigm Group Incorporated Notes to Unaudited Pro Forma Condensed Consolidated Balance Sheet as of September 30, 2006
TransDigm Group Incorporated Unaudited Pro Forma Condensed Consolidated Statement of Operations for the Twelve-Month Period Ended September 30, 2006 (In thousands)
TransDigm Group Incorporated Notes to Unaudited Pro Forma Condensed Consolidated Statement of Operations for the Twelve-Month Period Ended September 30, 2006
DESCRIPTION OF THE SENIOR SECURED CREDIT FACILITY