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Document And Entity Information - shares	6 Months Ended
Document And Entity Information - shares	Mar. 31, 2012	Apr. 27, 2012
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2012
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q2
Entity Registrant Name	TransDigm Group INC
Entity Central Index Key	0001260221
Current Fiscal Year End Date	--09-30
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		51,081,155

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2012	Sep. 30, 2011
CURRENT ASSETS:
Cash and cash equivalents	$ 201,481	$ 376,183
Trade accounts receivable - Net	240,458	189,293
Inventories	326,605	265,317
Income taxes receivable	12,200
Prepaid expenses and other	10,568	8,655
Deferred income taxes	23,770	30,844
Total current assets	815,082	870,292
PROPERTY, PLANT AND EQUIPMENT - Net	174,378	150,800
GOODWILL	3,060,345	2,595,747
TRADEMARKS AND TRADE NAMES	433,518	344,942
OTHER INTANGIBLE ASSETS - Net	634,250	483,424
DEBT ISSUE COSTS - Net	68,597	59,007
OTHER	13,693	9,424
TOTAL ASSETS	5,199,863	4,513,636
CURRENT LIABILITIES:
Current portion of long-term debt	20,500	15,500
Accounts payable	73,303	62,110
Accrued liabilities	116,498	120,312
Income taxes payable		8,937
Total current liabilities	210,301	206,859
LONG-TERM DEBT	3,608,875	3,122,875
DEFERRED INCOME TAXES	322,800	310,451
OTHER NON-CURRENT LIABILITIES	62,964	62,502
Total liabilities	4,204,940	3,702,687
STOCKHOLDERS' EQUITY:
Common stock - $.01 par value; authorized 224,400,000 shares; issued 51,519,609 and 50,829,276 at March 31, 2012 and September 30, 2011, respectively	515	508
Additional paid-in capital	504,853	464,700
Retained earnings	510,917	364,260
Accumulated other comprehensive loss	(5,274)	(3,277)
Treasury stock, at cost - 505,400 shares at March 31, 2012 and 494,100 shares at September 30, 2011	(16,088)	(15,242)
Total stockholders' equity	994,923	810,949
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 5,199,863	$ 4,513,636

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2012	Sep. 30, 2011
Condensed Consolidated Balance Sheets [Abstract]
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	224,400,000	224,400,000
Common stock, shares issued	51,519,609	50,829,276
Treasury stock, shares	505,400	494,100

Condensed Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		4 Months Ended	6 Months Ended
	Mar. 31, 2012	Apr. 02, 2011	Apr. 02, 2011	Mar. 31, 2012	Apr. 02, 2011
Condensed Consolidated Statements Of Income [Abstract]
NET SALES	$ 423,469	$ 304,307		$ 775,942	$ 537,859
COST OF SALES	187,429	146,433		340,347	252,839
GROSS PROFIT	236,040	157,874		435,595	285,020
SELLING AND ADMINISTRATIVE EXPENSES	49,474	33,171		91,324	63,691
AMORTIZATION OF INTANGIBLE ASSETS	9,339	11,462		21,778	15,739
INCOME FROM OPERATIONS	177,227	113,241		322,493	205,590
INTEREST EXPENSE - Net	52,300	54,137		101,361	86,693
REFINANCING COSTS		1,649			72,379
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	124,927	57,455		221,132	46,518
INCOME TAX PROVISION	43,375	20,758		74,475	16,974
INCOME FROM CONTINUING OPERATIONS	81,552	36,697		146,657	29,544
INCOME FROM DISCONTINUED OPERATIONS, NET OF TAX		19,120	$ 18,915		18,915
NET INCOME	81,552	55,817		146,657	48,459
NET INCOME APPLICABLE TO COMMON STOCK	$ 81,552	$ 55,817		$ 143,358	$ 45,649
Net earnings per share-see Note 4:
Net earnings per share from continuing operations- basic and diluted	$ 1.51	$ 0.69		$ 2.66	$ 0.50
Net earnings per share from discontinued operations- basic and diluted		0.35			0.35
Net earnings per share	$ 1.51	$ 1.04		$ 2.66	$ 0.85
Weighted-average shares outstanding:
Basic and diluted	53,882	53,333	53,333	53,882	53,333

Condensed Consolidated Statement Of Changes In Stockholders' Equity - 6 months ended Mar. 31, 2012 - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock [Member]	Total
BEGINNING BALANCE at Sep. 30, 2011	$ 508	$ 464,700	$ 364,260	$ (3,277)	$ (15,242)	$ 810,949
BEGINNING BALANCE, shares at Sep. 30, 2011	50,829,276				(494,100)
Compensation expense recognized for employee stock options		8,535				8,535
Excess tax benefits related to share- based payment arrangements		24,231				24,231
Exercise of employee stock options	$ 7	7,312				7,319
Exercise of employee stock options, shares	689,683
Common stock issued		75				75
Common stock issued, shares	650
Treasury stock purchased					$ (846)	(846)
Treasury stock purchased, shares					(11,300)
Comprehensive income (loss):
Net income			146,657			146,657
Interest rate swaps, net of tax				(1,300)		(1,300)
Foreign currency translation adjustments				(697)		(697)
Comprehensive income						144,660
ENDING BALANCE at Mar. 31, 2012	$ 515	$ 504,853	$ 510,917	$ (5,274)	$ (16,088)	$ 994,923
ENDING BALANCE, shares at Mar. 31, 2012	51,519,609				(505,400)

Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2012	Apr. 02, 2011
OPERATING ACTIVITIES:
Net income	$ 146,657	$ 48,459
Net income from discontinued operations		(18,915)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	11,154	9,558
Amortization of intangible assets	21,875	15,739
Amortization of debt issue costs	5,741	4,625
Refinancing costs		72,379
Non-cash equity compensation	8,535	4,054
Excess tax benefits related to share-based payment arrangements	(24,231)	(12,440)
Deferred income taxes	(3,470)	(10,682)
Changes in assets/liabilities, net of effects from acquisitions of businesses:
Trade accounts receivable	(9,031)	5,411
Inventories	(615)	1,267
Income taxes receivable/payable	4,498	(83)
Other assets	1,889	597
Accounts payable	(3,999)	(4,048)
Accrued and other liabilities	5,801	13,230
Net cash provided by operating activities	164,804	129,151
INVESTING ACTIVITIES:
Capital expenditures	(9,109)	(8,386)
Cash proceeds from sale of discontinued operations		240,000
Acquisition of businesses, net of cash acquired	(833,512)	(1,362,202)
Net cash used in investing activities	(842,621)	(1,130,588)
FINANCING ACTIVITIES:
Excess tax benefits related to share-based payment arrangements	24,231	12,440
Proceeds from exercise of stock options	7,316	6,219
Dividends paid	(3,299)	(2,810)
Treasury stock purchased	(846)
Proceeds from new senior secured credit facility - net	484,713	1,500,048
Repayment on new senior secured credit facility	(9,000)	(3,875)
Proceeds from senior subordinated notes due 2018 - net		1,582,534
Repurchase of senior subordinated notes due 2014		(1,041,894)
Repayment of existing senior secured credit facility		(780,000)
Net cash provided by financing activities	503,115	1,272,662
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(174,702)	271,225
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	376,183	234,112
CASH AND CASH EQUIVALENTS, END OF PERIOD	201,481	505,337
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash paid during the period for interest	93,884	61,327
Cash paid during the period for income taxes	$ 57,780	$ 24,566

Description Of The Business

6 Months Ended

Mar. 31, 2012

Description Of The Business [Abstract]

Description Of The Business

1.	DESCRIPTION OF THE BUSINESS

Description of the Business – TransDigm Group Incorporated ("TD Group"), through its wholly-owned subsidiary, 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. TransDigm Inc. along with TransDigm Inc.'s direct and indirect wholly-owned operating subsidiaries (collectively, with TD Group, the "Company" or "TransDigm"), offers a broad range of proprietary aerospace components. TD Group has no significant assets or operations other than its 100% ownership of TransDigm Inc. TD Group's common stock is listed on The New York Stock Exchange, or the NYSE, under the trading symbol "TDG."

Major product offerings, substantially all of which are ultimately provided to end-users in the aerospace industry, include mechanical/electro-mechanical actuators and controls, ignition systems and engine technology, specialized pumps and valves, power conditioning devices, specialized AC/DC electric motors and generators, NiCad batteries and chargers, engineered latching and locking devices, rods and locking devices, engineered connectors and elastomers, cockpit security components and systems, specialized cockpit displays, aircraft audio systems, specialized lavatory components, seatbelts and safety restraints, engineered interior surfaces and lighting and control technology.

Separate Financial Statements – Separate financial statements of TransDigm Inc. are not presented because TransDigm Inc.'s 7³/4 % senior subordinated notes are fully and unconditionally guaranteed on a senior subordinated basis by TD Group and all existing domestic subsidiaries of TransDigm Inc. and because TD Group has no significant operations or assets separate from its investment in TransDigm Inc.

Unaudited Interim Financial Information

6 Months Ended

Mar. 31, 2012

Unaudited Interim Financial Information [Abstract]

Unaudited Interim Financial Information

2.	UNAUDITED INTERIM FINANCIAL INFORMATION

The financial information included herein is unaudited; however, the information reflects all adjustments (consisting solely of normal recurring adjustments) that are, in the opinion of management, necessary for a fair presentation of the Company's financial position and results of operations and cash flows for the interim periods presented. These financial statements and notes should be read in conjunction with the financial statements and related notes for the year ended September 30, 2011 included in TD Group's Form 10-K dated November 18, 2011. As disclosed therein, the Company's annual consolidated financial statements were prepared in conformity with generally accepted accounting principles in the United States ("GAAP"). The September 30, 2011 condensed consolidated balance sheet was derived from TD Group's audited financial statements. The results of operations for the twenty-six week period ended March 31, 2012 are not necessarily indicative of the results to be expected for the full year.

- Definition

The entire disclosure for organization, consolidation and basis of presentation of financial statements disclosure.

+ References

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-Name Accounting Research Bulletin (ARB)
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+ Details

Acquisitions

6 Months Ended

Mar. 31, 2012

Acquisitions [Abstract]

Acquisitions

3.	ACQUISITIONS

AmSafe Global Holdings, Inc. – On February 15, 2012, TransDigm Inc. acquired AmSafe Global Holdings, Inc. ("AmSafe"), for approximately $749.3 million in cash, subject to adjustments based on the level of working capital as of the closing date of the acquisition. AmSafe is a leading supplier of innovative, highly engineered and proprietary safety and restraint equipment used primarily in the global aerospace industry. These products fit well with TransDigm's overall business direction.

The Company financed the acquisition through a combination of new senior bank debt of $500 million and cash. See Note 8 to the Condensed Consolidated Financial Statements.

The total purchase price was allocated to the underlying assets acquired and liabilities assumed based upon management's estimated fair values at the date of acquisition. To the extent the purchase price exceeded the estimated fair value of the net identifiable tangible and intangible assets acquired, such excess was allocated to goodwill. The following table summarizes the purchase price allocation of the estimated fair values of the assets acquired and liabilities assumed at the transaction date (in thousands).


Assets acquired:
Current assets, excluding cash acquired	$	95,729
Property, plant and equipment		25,999
Intangible assets		208,200
Goodwill		437,677
Other		8,039

Total assets acquired	$	775,644


Liabilities assumed:
Current liabilities	$	24,976
Other noncurrent liabilities		1,396

Total liabilities assumed	$	26,372


Net assets acquired	$	749,272

The Company expects that of the $438 million of goodwill recognized for the acquisition approximately $77 million will be deductible for tax purposes.

Harco Laboratories, Incorporated – On December 9, 2011, TransDigm Inc. acquired all of the outstanding stock of Harco Laboratories, Incorporated ("Harco"), for approximately $83.3 million in cash, which includes a purchase price adjustment of $0.4 million paid in the second quarter of fiscal 2012. Harco designs and manufactures highly engineered thermocouples, sensors, engine cable assemblies and related products for commercial aircraft. These products fit well with TransDigm's overall business direction. The Company expects that the approximately $55 million of goodwill recognized for the acquisition will not be deductible for tax purposes.

Schneller Holdings – On August 31, 2011, TransDigm Inc. acquired all of the outstanding equity interests in Schneller Holdings LLC ("Schneller") for approximately $288.6 million in cash, which includes a purchase price adjustment of $1.0 million paid in the first quarter of fiscal 2012. Schneller designs and manufactures proprietary, highly engineered laminates, thermoplastics, and non-textile flooring for use primarily on side walls, lavatories, galleys, bulkheads and cabin floors for commercial aircraft. These products fit well with TransDigm's overall business direction. The Company expects that the approximately $167 million of goodwill recognized for the acquisition will be deductible for tax purposes.

Talley Actuation – On December 31, 2010, AeroControlex Group, Inc., a wholly owned subsidiary of TransDigm Inc., acquired the actuation business of Telair International Inc. ("Talley Actuation"), a wholly-owned subsidiary of Teleflex Incorporated, for approximately $93.6 million in cash, which includes a purchase price adjustment of $0.3 million received in the third quarter of fiscal 2011. Talley Actuation manufactures proprietary, highly engineered electro-mechanical products and other components for commercial and military aircraft. These products fit well with TransDigm's overall business direction. The Company expects that the approximately $70 million of goodwill recognized for the acquisition will be deductible for tax purposes.

McKechnie Aerospace Holdings, Inc. – On December 6, 2010, TransDigm Inc. acquired all of the outstanding stock of McKechnie Aerospace Holdings Inc. ("McKechnie Aerospace"), for approximately $1.27 billion in cash, which includes a purchase price adjustment of $0.3 million paid in the third quarter of fiscal 2011. McKechnie Aerospace, through its subsidiaries, is a leading global designer, producer and supplier of aerospace components, assemblies and subsystems for commercial aircraft, regional/business jets, military fixed wing and rotorcraft. Some of the businesses acquired as part of McKechnie Aerospace have been divested. See Note 13 to the Condensed Consolidated Financial Statements. The remaining products fit well with TransDigm's overall business direction.


Assets acquired:
Current assets, excluding cash acquired	$	109,289
Property, plant and equipment		48,901
Intangible assets		433,000
Goodwill		864,934

Total assets acquired	$	1,456,124


Liabilities assumed:
Current liabilities	$	40,004
Deferred tax liabilities		118,591
Other noncurrent liabilities		31,837

Total liabilities assumed	$	190,432


Net assets acquired	$	1,265,692

The Company expects that the approximately $865 million of goodwill recognized for the acquisition will not be deductible for tax purposes.

The results of operations of McKechnie Aerospace are included in the Company's consolidated financial statements from the date of the transaction. Had the McKechnie acquisition and related financing transactions occurred at the beginning of the twenty-six week period ended April 2, 2011, unaudited pro forma consolidated results for the twenty-six week period ended April 2, 2011 would have been as follows (in thousands, except per share data):


	Twenty-Six Week Period Ended April 2, 2011
Net sales	$	579,224


Net income applicable to common stock from continuing operations	$	20,913


Net income per share from continuing operations:
Basic and diluted	$	0.39

The unaudited pro forma consolidated results are based on the Company's historical financial statements and those of McKechnie Aerospace and do not necessarily indicate the results of operations that would have resulted had the acquisition actually been completed at the beginning of the applicable period presented. The pro forma financial information assumes that the companies were combined as of October 1, 2010. The pro forma results for the twenty-six week period ended April 2, 2011 reflect the business combination accounting effects from the acquisition including amortization charges from the acquired intangible assets, inventory purchase accounting adjustments charged to cost of sales as the inventory is sold and increased interest expense associated with debt incurred to fund the acquisition. The unaudited pro forma consolidated results do not give effect to the synergies of the acquisition and are not indicative of the results of operations in future periods.

The Company accounted for the acquisitions of AmSafe, Harco, Schneller, Talley Actuation and McKechnie Aerospace (collectively, the "Acquisitions") using the acquisition method and included the results of operations of the Acquisitions in its consolidated financial statements from the effective date of each acquisition. The Company is in the process of obtaining a third-party valuation of certain tangible and intangible assets of AmSafe, Harco and Schneller and, therefore, the values attributed to those acquired assets in the condensed consolidated financial statements are subject to adjustment. Pro forma net sales and results of operations for the acquisitions of AmSafe, Harco, Schneller and Talley Actuation had they occurred at the beginning of the twenty-six week period ended March 31, 2012 are not significant and, accordingly, are not provided.

The Acquisitions strengthen and expand the Company's position to design, produce and supply highly-engineered proprietary aerospace components in niche markets with significant aftermarket content and provide opportunities to create value through the application of our three core value-driven operating strategies (obtaining profitable new business, continually improving our cost structure, and providing highly engineered value-added products to customers). The purchase price paid for each acquisition reflects the current earnings before interest, taxes, depreciation and amortization (EBITDA) and cash flows, as well as, the future EBITDA and cash flows expected to be generated by the business, which are driven in most cases by the recurring aftermarket consumption over the life of a particular aircraft, estimated to be approximately 30 years.

- Definition

The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).

+ References

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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 16: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 4
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Reference 17: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Publisher FASB
-Name Accounting Standards Codification
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Reference 19: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6972119&loc=d3e1383-128463

+ Details

Earnings Per Share

6 Months Ended

Mar. 31, 2012

Earnings Per Share [Abstract]

Earnings Per Share

4.	EARNINGS PER SHARE

The following table sets forth the computation of basic and diluted earnings per share (in thousands, except per share data):


	Thirteen Week Periods Ended				Twenty-Six Week Periods Ended
	March 31, 2012		April 2, 2011		March 31, 2012			April 2, 2011
Numerator for earnings per share:
Net income from continuing operations	$	81,552	$	36,697	$	146,657		$	29,544
Less dividends paid on participating securities		—		—		(3,299	)		(2,810	)

		81,552		36,697		143,358			26,734
Net income from discontinued operations		—		19,120		—			18,915


Net income applicable to common stock - basic and diluted	$	81,552	$	55,817	$	143,358		$	45,649

Denominator for basic and diluted earnings per share under the two-class method:
Weighted average common shares outstanding		50,800		49,815		50,615			49,656
Vested options deemed participating securities		3,082		3,518		3,267			3,677


Total shares for basic and diluted earnings per share		53,882		53,333		53,882			53,333


Net earnings per share from continuing operations - basic and diluted	$	1.51	$	0.69	$	2.66		$	0.50

Net earnings per share from discontinued operations - basic and diluted		—		0.35		—			0.35

Net earnings per share	$	1.51	$	1.04	$	2.66		$	0.85

Inventories

6 Months Ended

Mar. 31, 2012

Inventories [Abstract]

Inventories

5.	INVENTORIES

Inventories are stated at the lower of cost or market. Cost of inventories is determined by the average cost and the first-in, first-out (FIFO) methods for all locations except CEF Industries LLC, which determines the cost of inventories using the last-in, first-out (LIFO) method. Approximately 5% of the inventory was valued under the LIFO method at March 31, 2012.

Inventories consist of the following (in thousands):


	March 31, 2012			September 30, 2011
Raw materials and purchased component parts	$	199,151		$	160,402
Work-in-progress		102,246			85,612
Finished goods		58,119			43,192

Total		359,516			289,206
Reserve for excess and obsolete inventory and LIFO		(32,911	)		(23,889	)


Inventories - net	$	326,605		$	265,317

Intangible Assets

6 Months Ended

Mar. 31, 2012

Intangible Assets [Abstract]

Intangible Assets

6.	INTANGIBLE ASSETS

Intangible assets subject to amortization consist of the following (in thousands):


	March 31, 2012						September 30, 2011
	Gross Carrying Amount		Accumulated Amortization		Net		Gross Carrying Amount		Accumulated Amortization		Net
Technology	$	680,745	$	89,238	$	591,507	$	546,726	$	75,426	$	471,300
Order backlog		28,710		22,011		6,699		24,799		17,895		6,904
Other		43,044		7,000		36,044		10,973		5,753		5,220

Total	$	752,499	$	118,249	$	634,250	$	582,498	$	99,074	$	483,424

Intangible assets acquired during the twenty-six week period ended March 31, 2012 were as follows (in thousands):


	Cost		Amortization Period
Intangible assets not subject to amortization:
Goodwill	$	492,883
Trademarks and trade names		87,510

		580,393

Intangible assets subject to amortization:
Technology		132,850	20 years
Order backlog		6,410	1 year
Other		2,900	20 years

		142,160	19.1 years

Total	$	722,553

The aggregate amortization expense on identifiable intangible assets for the twenty-six week periods ended March 31, 2012 and April 2, 2011 was approximately $21.9 million and $15.7 million, respectively. The estimated amortization expense for fiscal 2012 is $44.4 million and for each of the five succeeding years 2013 through 2017 is $37.7 million, $35.6 million, $35.6 million, $35.6 million and $35.6 million, respectively.

The following is a summary of changes in the carrying value of goodwill from September 30, 2011 through March 31, 2012 (in thousands):


Balance, September 30, 2011	$	2,595,747
Goodwill acquired during the year		492,883
Purchase price allocation adjustments		(26,843	)
Other		(1,442	)

Balance, March 31, 2012	$	3,060,345

Product Warranty

6 Months Ended

Mar. 31, 2012

Product Warranty [Abstract]

Product Warranty

7.	PRODUCT WARRANTY

The Company provides limited warranties in connection with the sale of its products. The warranty period for products sold, which varies among the Company's operations, is typically less than two years but can be in the range from 90 days to six years. A provision for the estimated cost to repair or replace the products is recorded at the time of sale and periodically adjusted to reflect actual experience.

The following table presents a reconciliation of changes in the product warranty liability for the periods indicated below (in thousands):


	Twenty-Six Week Periods Ended
	March 31, 2012			April 2, 2011
Liability balance at beginning of period	$	8,722		$	8,345
Accruals for warranties issued		345			581
Warranty costs incurred		(1,053	)		(1,393	)
Acquisitions		217			91

Liability balance at end of period	$	8,231		$	7,624

Debt

6 Months Ended

Mar. 31, 2012

Debt [Abstract]

Debt

DEBT

Amendment No. 1 to the New Senior Secured Credit Facility – In accordance with the terms of the credit agreement dated February 14, 2011 (the "New Senior Secured Credit Facility"), TD Group's wholly-owned subsidiary, TransDigm Inc., entered into Amendment No.1 and an Incremental Term Loan Assumption Agreement (the "Amendment") on February 15, 2012. The Amendment provides for an additional term loan facility in the aggregate principal amount of $500 million. The additional term loan facility was fully drawn on February 15, 2012. The proceeds of the additional term loan facility were used to pay a portion of the purchase price of and related transaction expenses associated with the acquisition of AmSafe.

The additional term loan under the New Senior Secured Credit Facility matures in February 2017 and requires quarterly principal payments of $1.3 million that began on March 31, 2012.

The terms and conditions that apply to the additional term loan facility are substantially the same as the terms and conditions that apply to the existing term loan under the February 14, 2011 New Senior Secured Credit Facility.

Assumption Agreement to Revolving Credit Facility – On February 15, 2012 TransDigm Inc. entered into an Incremental Revolving Credit Assumption Agreement (the "Assumption Agreement") to its credit agreement dated as of December 6, 2010, as amended (collectively, the "Existing Senior Secured Credit Facility"). The Assumption Agreement provides for additional revolving commitments to TransDigm in an aggregate principal amount of $65 million, which results in a total revolving credit amount of $310 million. No borrowings, other than the issuance of certain letters of credit, were made under the Existing Senior Secured Credit Facility as of March 31, 2012.

- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

+ References + Details

Income Taxes

6 Months Ended

Mar. 31, 2012

Income Taxes [Abstract]

Income Taxes

9.	INCOME TAXES

At the end of each reporting period, TD Group makes an estimate of its annual effective income tax rate. The estimate used in the year-to-date period may change in subsequent periods. During the thirteen week periods ended March 31, 2012 and April 2, 2011, the effective income tax rate was 34.7% and 36.1%, respectively. The lower effective tax rate for the thirteen week period ended March 31, 2012 was primarily due to an increase in the domestic manufacturing deduction and a reduction in state taxes that were partially offset by the expiration of the research and development tax credit. During the twenty-six week periods ended March 31, 2012 and April 2, 2011, the effective income tax rate was 33.7% and 36.5%, respectively. The lower effective tax rate for the twenty-six week period ended March 31, 2012 was primarily due to the factors noted above and a non-recurring adjustment (benefit of $2.8 million) to state income tax expense due to changes in state tax laws.

The Company and its subsidiaries file income tax returns in the U.S. federal jurisdiction, various state and local jurisdictions as well as foreign jurisdictions located in Belgium, Malaysia, Mexico, France, Singapore, China, Sri Lanka and the United Kingdom. The Company is subject to U.S. federal examination for the 2008, 2009 and 2010 years. In addition, the Company is subject to state income tax examinations for fiscal years 2009 and 2010.

At March 31, 2012 and September 30, 2011, TD Group had $9.3 million and $7.6 million in unrecognized tax benefits, the recognition of which would have an effect of approximately $8.2 million and $7.0 million on the effective tax rate at March 31, 2012 and September 30, 2011, respectively. The Company does not believe that the tax positions that comprise the unrecognized tax benefit amount will change significantly over the next 12 months. The Company recognizes accrued interest and penalties related to unrecognized tax benefits in income tax expense.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Article 4

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 136, 172
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 43, 44, 45, 46, 47, 48, 49
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
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-Section 50
-Paragraph 15
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 7: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 8: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319

+ Details

Fair Value Measurements

6 Months Ended

Mar. 31, 2012

Fair Value Measurements [Abstract]

Fair Value Measurements

10.

FAIR VALUE MEASUREMENTS

The following tables present our assets and liabilities that are measured at fair value on a recurring basis and are categorized using the fair value hierarchy. The fair value hierarchy has three levels based on the reliability of the inputs used to determine fair value. Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2 inputs are quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, and inputs (other than quoted prices) that are observable for the asset or liability, either directly or indirectly. Level 3 inputs are unobservable inputs for the asset or liability. A financial asset or liability's classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement.

The following summarizes the carrying amounts and fair values of financial instruments (in thousands):


		March 31, 2012				September 30, 2011
	Level	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Assets:
Cash and cash equivalents	1	$	201,481	$	201,481	$	376,183	$	376,183
Liabilities:
Interest rate swaps ⁽¹⁾	2		7,500		7,500		5,600		5,600
Foreign currency exchange contracts	2		—		—		—		—
Long-term debt:
Term loans	2		2,029,375		2,040,000		1,538,375		1,496,000
7³/4% Senior Subordinated Notes due 2018	1		1,600,000		1,696,000		1,600,000		1,616,000

(1)	Included in Other non-current liabilities on the Condensed Consolidated Balance Sheet.

Interest rate swaps were measured at fair value using quoted market prices for the swap interest rate indexes over the term of the swap discounted to present value versus the fixed rate of the contract. Foreign exchange contracts were measured at fair value using the quoted currency exchange rate versus the fixed rate of the contract. The estimated fair value of the Company's term loans was based on information provided by the agent under the Company's New Senior Secured Credit Facility. The estimated fair values of the Company's 7³/4% senior subordinated notes due 2018 were based upon quoted market prices.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 44A, 44B
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 15C, 15D
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 15A
-Subparagraph a-d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 15B
-Subparagraph a, b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
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-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 3, 10, 14, 15
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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-Paragraph 32, 33, 34
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
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-Name Statement of Financial Accounting Standard (FAS)
-Number 159
-Paragraph 17-22, 27, 28
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
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+ Details

Derivatives And Hedging Activities

6 Months Ended

Mar. 31, 2012

Derivatives And Hedging Activities [Abstract]

Derivatives And Hedging Activities

11.

DERIVATIVES AND HEDGING ACTIVITIES

The Company is exposed to, among other things, the impact of changes in interest and foreign currency exchange rates in the normal course of business. The Company's risk management program is designed to manage the exposure and volatility arising from these risks, and utilizes derivative financial instruments to offset a portion of these risks. The Company uses derivative financial instruments only to the extent necessary to hedge identified business risks, and does not enter into such transactions for trading purposes. The Company generally does not require collateral or other security with counterparties to these financial instruments and is therefore subject to credit risk in the event of nonperformance; however, the Company monitors credit risk and currently does not anticipate nonperformance by other parties.

Interest rate swap agreements are used to manage interest rate risk associated with floating-rate borrowings under our New Senior Secured Credit Facility. The interest rate swap agreements utilized by the Company effectively modify the Company's exposure to interest rate risk by converting a portion of the Company's floating-rate debt to a fixed rate basis through the expiration date of the interest rate swap agreements, thereby reducing the impact of interest rate changes on future interest expense. These agreements involve the receipt of floating rate amounts in exchange for fixed rate interest payments over the term of the agreements without an exchange of the underlying principal amount. These derivative instruments qualify as effective cash flow hedges under GAAP. For these hedges, the effective portion of the gain or loss from the financial instruments is initially reported as a component of accumulated other comprehensive income (loss) in stockholders' equity and subsequently reclassified into earnings in the same line as the hedged item in the same period or periods during which the hedged item affects earnings.

At March 31, 2012, three forward-starting interest rate swap agreements were in place to swap variable rates on the New Senior Secured Credit Facility for a fixed rate based on an aggregate notional amount of $353 million. Beginning December 31, 2012, these interest rate swap agreements will effectively convert the variable interest rate on the aggregate notional amount of the New Senior Secured Credit Facility to a fixed rate of 5.17% (2.17% plus the 3% margin percentage) through June 30, 2015.

Foreign currency exchange contracts are used to manage the impact of changes in foreign exchange rates on our consolidated results of operations and future foreign currency-denominated cash flows. These contracts effectively reduce exposure to currency movements affecting foreign currency-denominated expenditures by fixing the foreign currency exchange rate over the term of the agreement. These derivative instruments qualify as effective cash flow hedges under GAAP. For these hedges, changes in the fair value of the hedge are initially recorded as a component of accumulated other comprehensive income (loss) in stockholders' equity and are subsequently reclassified into earnings in the same period the forecasted transaction affects earnings.

As of March 31, 2012, the Company had outstanding foreign currency exchange contracts totaling $1.5 million in the form of forward contracts with varying maturity dates ranging from April 2012 to September 2012. The fair value of these contracts approximated their carrying value as of March 31, 2012.

- Definition

The entire disclosure for the entity's entire derivative instruments and hedging activities. Describes an entity's risk management strategies, derivatives in hedging activities and non-hedging derivative instruments, the assets, obligations, liabilities, revenues and expenses arising therefrom, and the amounts of and methodologies and assumptions used in determining the amounts of such items.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 45
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 44
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-URI http://asc.fasb.org/extlink&oid=6441202&loc=d3e80720-113993

+ Details

Comprehensive Income

6 Months Ended

Mar. 31, 2012

Comprehensive Income [Abstract]

Comprehensive Income

12.

COMPREHENSIVE INCOME

Comprehensive income, which primarily includes adjustments for changes in the fair values of the interest rate swap agreements on a net of tax basis and foreign currency translation adjustments, was approximately $144.7 million and $51.3 million for the twenty-six week periods ended March 31, 2012 and April 2, 2011, respectively.

- Definition

The entire disclosure for comprehensive income. Includes, but is not limited to, the following: 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. Components of comprehensive income include: (1) foreign currency translation adjustments; (2) gains (losses) on foreign currency transactions that are designated as, and are effective as, economic hedges of a net investment in a foreign entity; (3) gains (losses) on intercompany foreign currency transactions that are of a long-term-investment nature, when the entities to the transaction are consolidated, combined, or accounted for by the equity method in the reporting enterprise's financial statements; (4) change in the market value of a futures contract that qualifies as a hedge of an asset reported at fair value; (5) unrealized holding gains (losses) on available-for-sale securities and that resulting from transfers of debt securities from the held-to-maturity category to the available-for-sale category; (6) a net loss recognized as an additional pension liability not yet recognized as net periodic pension cost; and (7) the net gain (loss) and net prior service cost or credit for pension plans and other postretirement benefit plans.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 130
-Paragraph 14-26
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Paragraph 1
-Subparagraph (SX 210.3-04)
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-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6522872

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+ Details

Discontinued Operations

6 Months Ended

Mar. 31, 2012

Discontinued Operations [Abstract]

Discontinued Operations

13.

DISCONTINUED OPERATIONS

On March 9, 2011, the Company completed the divestiture of its fastener business for approximately $239.6 million in cash, which includes a preliminary working capital adjustment of $0.4 million paid in the third quarter of fiscal 2011. The Company recorded a gain on sale of the fastener business of approximately $21.0 million, net of tax of $59.5 million.

On April 7, 2011, the Company completed the divestiture of Aero Quality Sales ("AQS") to Satair A/S for approximately $31.8 million in cash, which includes a $1.8 million working capital adjustment received in the third quarter of fiscal 2011. The Company's Chairman and Chief Executive Officer, W. Nicholas Howley, was a director of Satair A/S from 2006 through October 2011.

The sales of the fastener business and AQS have been accounted for as discontinued operations and accordingly the condensed consolidated statements of income have classified the operating results to reflect discontinued operations presentation. The following is the summarized operating results for the fastener business and AQS for the thirteen week period ended April 2, 2011 and from the date of acquisition (December 6, 2010) through April 2, 2011 (in thousands).


	Thirteen Week Period Ended April 2, 2011			December 6, 2010 Through April 2, 2011

Net sales	$	17,313		$	23,802


Loss from discontinued operations before income taxes	$	(2,764	)	$	(2,835	)

Income tax benefit		928			794


Loss from discontinued operations		(1,836	)		(2,041	)


Gain on sale of discontinued operations, net of tax		20,956			20,956


Income from discontinued operations	$	19,120		$	18,915

- Definition

The entire disclosure for the facts and circumstances leading to the completed or expected disposal, manner and timing of disposal, the gain (loss) recognized in the income statement and the income statement caption that includes that gain (loss), amounts of revenues and pretax profit or loss reported in discontinued operations, the segment in which the disposal group was reported, and the classification (whether sold or classified as held for sale) and carrying value of the assets and liabilities comprising the disposal group. Includes all disposal groups, including those classified as components of the entity (discontinued operations).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 144
-Paragraph 43-48
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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+ Details

Supplemental Guarantor Information

6 Months Ended

Mar. 31, 2012

Supplemental Guarantor Information [Abstract]

Supplemental Guarantor Information

14.

SUPPLEMENTAL GUARANTOR INFORMATION

TransDigm's 7³/4% senior subordinated notes due 2018 are jointly and severally guaranteed, on a senior subordinated basis, by TD Group and TransDigm Inc.'s Domestic Restricted Subsidiaries, as defined in the indenture. The following supplemental condensed consolidating financial information presents, in separate columns, the balance sheets of the Company as of March 31, 2012 and September 30, 2011 and its statements of income and cash flows for the twenty-six week periods ended March 31, 2012 and April 2, 2011 for (i) TransDigm Group on a parent only basis with its investment in subsidiaries recorded under the equity method, (ii) TransDigm Inc. including its directly owned operations and non-operating entities, (iii) the Subsidiary Guarantors on a combined basis, (iv) Non-Guarantor Subsidiaries after December 14, 2010 and (v) the Company on a consolidated basis.

TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATING BALANCE SHEET

AS OF MARCH 31, 2012


	TransDigm Group		TransDigm Inc.		Subsidiary Guarantors		Non-Guarantor Subsidiaries			Eliminations			Total Consolidated

ASSETS
CURRENT ASSETS:
Cash and cash equivalents	$	18,552	$	165,167	$	7,309	$	10,453		$	—		$	201,481
Trade accounts receivable - Net		—		12,438		204,667		24,709			(1,356	)		240,458
Inventories		—		22,540		274,256		29,793			16			326,605
Income taxes receivable		—		12,949		—		(749	)		—			12,200
Prepaid expenses and other		—		1,337		7,063		2,168			—			10,568
Deferred income taxes		—		23,770		—		—			—			23,770

Total current assets		18,552		238,201		493,295		66,374			(1,340	)		815,082

INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES		976,371		4,718,730		1,953,253		(8,207	)		(7,640,147	)		—
PROPERTY, PLANT AND EQUIPMENT - Net		—		15,714		144,857		13,807			—			174,378
GOODWILL		—		64,893		2,958,264		37,188			—			3,060,345
TRADEMARKS AND TRADE NAMES		—		19,376		402,090		12,052			—			433,518
OTHER INTANGIBLE ASSETS - Net		—		8,466		611,564		14,220			—			634,250
DEBT ISSUE COSTS - Net		—		68,597		—		—			—			68,597
OTHER		—		2,462		11,063		168			—			13,693

TOTAL ASSETS	$	994,923	$	5,136,439	$	6,574,386	$	135,602		$	(7,641,487	)	$	5,199,863


LIABILITIES AND STOCKHOLDERS' EQUITY
CURRENT LIABILITIES:
Current portion of long-term debt	$	—	$	20,500	$	—	$	—		$	—		$	20,500
Accounts payable		—		12,011		50,245		12,403			(1,356	)		73,303
Accrued liabilities		—		52,369		57,933		6,196			—			116,498
Income taxes payable		—		—		—		—			—			—

Total current liabilities		—		84,880		108,178		18,599			(1,356	)		210,301

LONG-TERM DEBT		—		3,608,875		—		—			—			3,608,875
DEFERRED INCOME TAXES		—		320,800		2,000		—			—			322,800
OTHER NON-CURRENT LIABILITIES		—		27,511		35,550		(97	)		—			62,964

Total liabilities		—		4,042,066		145,728		18,502			(1,356	)		4,204,940

STOCKHOLDERS' EQUITY		994,923		1,094,373		6,428,658		117,100			(7,640,131	)		994,923

TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$	994,923	$	5,136,439	$	6,574,386	$	135,602		$	(7,641,487	)	$	5,199,863

TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATING BALANCE SHEET

AS OF SEPTEMBER 30, 2011


	TransDigm Group		TransDigm Inc.		Subsidiary Guarantors		Non-Guarantor Subsidiaries			Eliminations			Total Consolidated

ASSETS
CURRENT ASSETS:
Cash and cash equivalents	$	5,695	$	360,074	$	2,115	$	8,299		$	—		$	376,183
Trade accounts receivable - Net		—		11,183		170,420		8,484			(794	)		189,293
Inventories		—		23,311		233,726		8,264			16			265,317
Deferred income taxes		—		23,248		7,596		—			—			30,844
Prepaid expenses and other		—		2,571		5,451		633			—			8,655

Total current assets		5,695		420,387		419,308		25,680			(778	)		870,292

INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES		805,254		3,746,531		1,557,736		(8,494	)		(6,101,027	)		—
PROPERTY, PLANT AND EQUIPMENT - Net		—		15,903		129,566		5,331			—			150,800
GOODWILL		—		81,736		2,478,780		35,231			—			2,595,747
TRADEMARKS AND TRADE NAMES		—		19,376		313,280		12,286			—			344,942
OTHER INTANGIBLE ASSETS - Net		—		8,760		459,615		15,049			—			483,424
DEBT ISSUE COSTS - Net		—		59,007		—		—			—			59,007
OTHER		—		2,415		7,010		(1	)		—			9,424

TOTAL ASSETS	$	810,949	$	4,354,115	$	5,365,295	$	85,082		$	(6,101,805	)	$	4,513,636


LIABILITIES AND STOCKHOLDERS' EQUITY
CURRENT LIABILITIES:
Current portion of long-term debt	$	—	$	15,500	$	—	$	—		$	—		$	15,500
Accounts payable		—		8,071		49,944		4,889			(794	)		62,110
Accrued liabilities		—		52,525		65,178		2,609			—			120,312
Income taxes payable		—		5,561		3,155		221			—			8,937

Total current liabilities		—		81,657		118,277		7,719			(794	)		206,859

LONG-TERM DEBT		—		3,122,875		—		—			—			3,122,875
DEFERRED INCOME TAXES		—		199,610		110,841		—			—			310,451
OTHER NON-CURRENT LIABILITIES		—		26,717		35,785		—			—			62,502

Total liabilities		—		3,430,859		264,903		7,719			(794	)		3,702,687

STOCKHOLDERS' EQUITY		810,949		923,256		5,100,392		77,363			(6,101,011	)		810,949

TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$	810,949	$	4,354,115	$	5,365,295	$	85,082		$	(6,101,805	)	$	4,513,636

TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATING STATEMENT OF INCOME

FOR THE TWENTY-SIX WEEK PERIOD ENDED MARCH 31, 2012

(Amounts in thousands)


	TransDigm Group			TransDigm Inc.			Subsidiary Guarantors		Non-Guarantor Subsidiaries		Eliminations			Total Consolidated

NET SALES	$	—		$	52,136		$	692,146	$	35,029	$	(3,369	)	$	775,942

COST OF SALES		—			30,404			286,659		26,653		(3,369	)		340,347


GROSS PROFIT		—			21,732			405,487		8,376		—			435,595

SELLING AND ADMINISTRATIVE EXPENSES		—			28,330			58,395		4,599		—			91,324
AMORTIZATION OF INTANGIBLE ASSETS		—			312			20,792		674		—			21,778


INCOME (LOSS) FROM OPERATIONS		—			(6,910	)		326,300		3,103		—			322,493
INTEREST EXPENSE - Net		—			100,346			244		771		—			101,361
EQUITY IN INCOME OF SUBSIDIARIES		(146,657	)		(216,157	)		—		—		362,814			—


INCOME BEFORE INCOME TAXES		146,657			108,901			326,056		2,332		(362,814	)		221,132

INCOME TAX PROVISION (BENEFIT)		—			(37,756	)		111,227		1,004		—			74,475


NET INCOME	$	146,657		$	146,657		$	214,829	$	1,328	$	(362,814	)	$	146,657

TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS

FOR THE TWENTY-SIX WEEK PERIOD ENDED APRIL 2, 2011

(Amounts in thousands)


	TransDigm Group			TransDigm Inc.			Subsidiary Guarantors		Non-Guarantor Subsidiaries			Eliminations			Total Consolidated
NET SALES	$	—		$	37,365		$	492,105	$	11,376		$	(2,987	)	$	537,859

COST OF SALES		—			21,965			223,880		9,149			(2,155	)		252,839


GROSS PROFIT		—			15,400			268,225		2,227			(832	)		285,020
SELLING AND ADMINISTRATIVE EXPENSES		—			18,622			44,037		1,032			—			63,691
AMORTIZATION OF INTANGIBLE ASSETS		—			312			14,808		619			—			15,739


INCOME (LOSS) FROM OPERATIONS		—			(3,534	)		209,380		576			(832	)		205,590

INTEREST EXPENSE - Net		—			85,659			528		506			—			86,693
REFINANCING COSTS		—			72,379			—		—			—			72,379
EQUITY IN INCOME OF SUBSIDIARIES		(48,459	)		(155,794	)		—		—			204,253			—


INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES		48,459			(5,778	)		208,852		70			(205,085	)		46,518

INCOME TAX PROVISION (BENEFIT)		—			(54,237	)		71,100		111			—			16,974


INCOME (LOSS) FROM CONTINUING OPERATIONS		48,459			48,459			137,752		(41	)		(205,085	)		29,544

INCOME FROM DISCONTINUED OPERATIONS, NET OF TAX		—			—			6,732		12,183			—			18,915


NET INCOME	$	48,459		$	48,459		$	144,484	$	12,142		$	(205,085	)	$	48,459

TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS

FOR THE TWENTY-SIX WEEK PERIOD ENDED MARCH 31, 2012

(Amounts in thousands)


	TransDigm Group			TransDigm Inc.			Subsidiary Guarantors			Non-Guarantor Subsidiaries			Eliminations			Total Consolidated
NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES	$	—		$	(53,599	)	$	215,749		$	1,958		$	696		$	164,804

INVESTING ACTIVITIES:
Capital expenditures		—			(829	)		(8,115	)		(165	)		—			(9,109	)
Acquisition of businesses, net of cash acquired		—			(833,512	)		—			—			—			(833,512	)

Net cash used in investing activities		—			(834,341	)		(8,115	)		(165	)		—			(842,621	)


FINANCING ACTIVITIES:
Intercompany activities		(14,545	)		217,320			(202,440	)		361			(696	)		—
Excess tax benefits related to share-based payment arrangements		24,231			—			—			—			—			24,231
Proceeds from exercise of stock options		7,316			—			—			—			—			7,316
Dividends paid		(3,299	)		—			—			—			—			(3,299	)
Treasury stock purchased		(846	)		—			—			—			—			(846	)
Proceeds from new senior secured credit facility-net		—			484,713			—			—			—			484,713
Repayment on new senior secured credit facility		—			(9,000	)		—			—			—			(9,000	)

Net cash provided by (used in) financing activities		12,857			693,033			(202,440	)		361			(696	)		503,115


INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS		12,857			(194,907	)		5,194			2,154			—			(174,702	)

CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD		5,695			360,074			2,115			8,299			—			376,183


CASH AND CASH EQUIVALENTS, END OF PERIOD	$	18,552		$	165,167		$	7,309		$	10,453		$	—		$	201,481

TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS

FOR THE TWENTY-SIX WEEK PERIOD ENDED APRIL 2, 2011

(Amounts in thousands)


	TransDigm Group			TransDigm Inc.			Subsidiary Guarantors			Non-Guarantor Subsidiaries			Eliminations			Total Consolidated
NET CASH PROVIDED BY (USED IN)
OPERATING ACTIVITIES	$	—		$	(49,933	)	$	237,165		$	(57,697	)	$	(384	)	$	129,151

INVESTING ACTIVITIES:
Capital expenditures		—			(1,619	)		(1,270	)		(5,497	)		—			(8,386	)
Cash proceeds from sale of discontinued operations		—			240,000			—			—			—			240,000
Acquisition of businesses, net of cash acquired		—			(1,362,202	)		—			—			—			(1,362,202	)

Net cash used in investing activities		—			(1,123,821	)		(1,270	)		(5,497	)		—			(1,130,588	)


FINANCING ACTIVITIES:
Intercompany activities		(8,907	)		166,988			(229,973	)		71,508			384			—
Excess tax benefits related to share-based payment arrangements		12,440			—			—			—			—			12,440
Proceeds from exercise of stock options		6,219			—			—			—			—			6,219
Dividends paid		(2,810	)		—			—			—			—			(2,810	)
Proceeds from new senior secured credit facility - net		—			1,500,048			—			—			—			1,500,048
Repayment on new senior secured credit facility		—			(3,875	)		—			—			—			(3,875	)
Proceeds from 2018 senior subordinated notes - net		—			1,582,534			—			—			—			1,582,534
Repurchase of 2014 senior subordinated notes		—			(1,041,894	)		—			—			—			(1,041,894	)
Repayment of previous senior secured credit facility		—			(780,000	)		—			—			—			(780,000	)

Net cash provided by (used in) financing activities		6,942			1,423,801			(229,973	)		71,508			384			1,272,662

INCREASE IN CASH AND CASH EQUIVALENTS		6,942			250,047			5,922			8,314			—			271,225

CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD		4,884			226,200			3,028			—			—			234,112


CASH AND CASH EQUIVALENTS, END OF PERIOD	$	11,826		$	476,247		$	8,950		$	8,314		$	—		$	505,337

Acquisitions (Tables)

6 Months Ended

Mar. 31, 2012

Business Acquisition [Line Items]

Unaudited Pro Forma Consolidated Results


	Twenty-Six Week Period Ended April 2, 2011
Net sales	$	579,224


Net income applicable to common stock from continuing operations	$	20,913


Net income per share from continuing operations:
Basic and diluted	$	0.39

McKechnie Aerospace Holdings, Inc. [Member]

Business Acquisition [Line Items]

Preliminary Purchase Price Allocation Of Fair Values Of The Assets And Liabilities Assumed


Assets acquired:
Current assets, excluding cash acquired	$	109,289
Property, plant and equipment		48,901
Intangible assets		433,000
Goodwill		864,934

Total assets acquired	$	1,456,124


Liabilities assumed:
Current liabilities	$	40,004
Deferred tax liabilities		118,591
Other noncurrent liabilities		31,837

Total liabilities assumed	$	190,432


Net assets acquired	$	1,265,692

AmSafe Global Holdings, Inc. [Member]

Business Acquisition [Line Items]

Preliminary Purchase Price Allocation Of Fair Values Of The Assets And Liabilities Assumed


Assets acquired:
Current assets, excluding cash acquired	$	95,729
Property, plant and equipment		25,999
Intangible assets		208,200
Goodwill		437,677
Other		8,039

Total assets acquired	$	775,644


Liabilities assumed:
Current liabilities	$	24,976
Other noncurrent liabilities		1,396

Total liabilities assumed	$	26,372


Net assets acquired	$	749,272

- Definition

Tabular disclosure of pro forma results of operations for a material business acquisition or series of individually immaterial business acquisitions that are material in the aggregate.

+ References + Details

Earnings Per Share (Tables)

6 Months Ended

Mar. 31, 2012

Earnings Per Share [Abstract]

Computation Of Basic And Diluted Earnings Per Share


	Thirteen Week Periods Ended				Twenty-Six Week Periods Ended
	March 31, 2012		April 2, 2011		March 31, 2012			April 2, 2011
Numerator for earnings per share:
Net income from continuing operations	$	81,552	$	36,697	$	146,657		$	29,544
Less dividends paid on participating securities		—		—		(3,299	)		(2,810	)

		81,552		36,697		143,358			26,734
Net income from discontinued operations		—		19,120		—			18,915


Net income applicable to common stock - basic and diluted	$	81,552	$	55,817	$	143,358		$	45,649

Denominator for basic and diluted earnings per share under the two-class method:
Weighted average common shares outstanding		50,800		49,815		50,615			49,656
Vested options deemed participating securities		3,082		3,518		3,267			3,677


Total shares for basic and diluted earnings per share		53,882		53,333		53,882			53,333


Net earnings per share from continuing operations - basic and diluted	$	1.51	$	0.69	$	2.66		$	0.50

Net earnings per share from discontinued operations - basic and diluted		—		0.35		—			0.35

Net earnings per share	$	1.51	$	1.04	$	2.66		$	0.85

Inventories (Tables)

6 Months Ended

Mar. 31, 2012

Inventories [Abstract]

Components Of Inventories


	March 31, 2012			September 30, 2011
Raw materials and purchased component parts	$	199,151		$	160,402
Work-in-progress		102,246			85,612
Finished goods		58,119			43,192

Total		359,516			289,206
Reserve for excess and obsolete inventory and LIFO		(32,911	)		(23,889	)


Inventories - net	$	326,605		$	265,317

Intangible Assets (Tables)

6 Months Ended

Mar. 31, 2012

Intangible Assets [Abstract]

Intangible Assets Subject To Amortization


	March 31, 2012						September 30, 2011
	Gross Carrying Amount		Accumulated Amortization		Net		Gross Carrying Amount		Accumulated Amortization		Net
Technology	$	680,745	$	89,238	$	591,507	$	546,726	$	75,426	$	471,300
Order backlog		28,710		22,011		6,699		24,799		17,895		6,904
Other		43,044		7,000		36,044		10,973		5,753		5,220

Total	$	752,499	$	118,249	$	634,250	$	582,498	$	99,074	$	483,424

Intangible Assets Acquired


	Cost		Amortization Period
Intangible assets not subject to amortization:
Goodwill	$	492,883
Trademarks and trade names		87,510

		580,393

Intangible assets subject to amortization:
Technology		132,850	20 years
Order backlog		6,410	1 year
Other		2,900	20 years

		142,160	19.1 years

Total	$	722,553

Summary Of Changes In The Carrying Value Of Goodwill


Balance, September 30, 2011	$	2,595,747
Goodwill acquired during the year		492,883
Purchase price allocation adjustments		(26,843	)
Other		(1,442	)

Balance, March 31, 2012	$	3,060,345

- Definition

Tabular disclosure of goodwill by reportable segment and in total. Disclosure details may include, but are not limited to, the carrying amount of goodwill, goodwill acquired during the year, goodwill impairment losses recognized, goodwill written-off due to the sale of a business unit, goodwill not yet allocated, and any other changes to goodwill.

+ References + Details

Product Warranty (Tables)

6 Months Ended

Mar. 31, 2012

Product Warranty [Abstract]

Reconciliation Of Changes In The Product Warranty Liability


	Twenty-Six Week Periods Ended
	March 31, 2012			April 2, 2011
Liability balance at beginning of period	$	8,722		$	8,345
Accruals for warranties issued		345			581
Warranty costs incurred		(1,053	)		(1,393	)
Acquisitions		217			91

Liability balance at end of period	$	8,231		$	7,624

Fair Value Measurements (Tables)

6 Months Ended

Mar. 31, 2012

Fair Value Measurements [Abstract]

Carrying Amounts And Fair Values Of Financial Instruments


		March 31, 2012				September 30, 2011
	Level	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Assets:
Cash and cash equivalents	1	$	201,481	$	201,481	$	376,183	$	376,183
Liabilities:
Interest rate swaps ⁽¹⁾	2		7,500		7,500		5,600		5,600
Foreign currency exchange contracts	2		—		—		—		—
Long-term debt:
Term loans	2		2,029,375		2,040,000		1,538,375		1,496,000
7³/4% Senior Subordinated Notes due 2018	1		1,600,000		1,696,000		1,600,000		1,616,000

(1)	Included in Other non-current liabilities on the Condensed Consolidated Balance Sheet.

- Definition

Tabular disclosure of the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments, assets, and liabilities. Such certain disclosures about the financial instruments, assets, and liabilities include: (1) the fair value of the required items together with their carrying amounts (as appropriate) and (2) the methodology and assumptions used in developing such estimates of fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 10
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 14
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 15
-Subparagraph b-d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 32
-Subparagraph a, c(1), c(2), c(3), d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 159
-Paragraph 18
-Subparagraph c(2), d, e, f
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 159
-Paragraph 19
-Subparagraph a, b, c(1), d(1)
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6947722&loc=d3e13433-108611

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=6947722&loc=d3e13467-108611

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=6947722&loc=d3e13476-108611

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 30
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19207-110258

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6447952&loc=d3e13220-108610

+ Details

Discontinued Operations (Tables)

6 Months Ended

Mar. 31, 2012

Discontinued Operations [Abstract]

Summarized Operating Results For The Discontinued Fastener Business And AQS


	Thirteen Week Period Ended April 2, 2011			December 6, 2010 Through April 2, 2011

Net sales	$	17,313		$	23,802


Loss from discontinued operations before income taxes	$	(2,764	)	$	(2,835	)

Income tax benefit		928			794


Loss from discontinued operations		(1,836	)		(2,041	)


Gain on sale of discontinued operations, net of tax		20,956			20,956


Income from discontinued operations	$	19,120		$	18,915

- Definition

Tabular disclosure of disposal groups, which may include the gain (loss) recognized in the income statement and the income statement caption that includes that gain (loss), amounts of revenues and pretax profit or loss reported in discontinued operations, the classification and carrying value of the assets and liabilities comprising the disposal group, and the segment in which the disposal group was reported. Also may include the amount of adjustments to amounts previously reported in discontinued operations such as resolution of contingencies arising from the disposal transaction or the operations of the component prior to disposal.

+ References + Details

Supplemental Guarantor Information (Tables)

3 Months Ended

Mar. 31, 2012

Supplemental Guarantor Information [Abstract]

Condensed Consolidating Balance Sheet

TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATING BALANCE SHEET

AS OF MARCH 31, 2012


	TransDigm Group		TransDigm Inc.		Subsidiary Guarantors		Non-Guarantor Subsidiaries			Eliminations			Total Consolidated

ASSETS
CURRENT ASSETS:
Cash and cash equivalents	$	18,552	$	165,167	$	7,309	$	10,453		$	—		$	201,481
Trade accounts receivable - Net		—		12,438		204,667		24,709			(1,356	)		240,458
Inventories		—		22,540		274,256		29,793			16			326,605
Income taxes receivable		—		12,949		—		(749	)		—			12,200
Prepaid expenses and other		—		1,337		7,063		2,168			—			10,568
Deferred income taxes		—		23,770		—		—			—			23,770

Total current assets		18,552		238,201		493,295		66,374			(1,340	)		815,082

INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES		976,371		4,718,730		1,953,253		(8,207	)		(7,640,147	)		—
PROPERTY, PLANT AND EQUIPMENT - Net		—		15,714		144,857		13,807			—			174,378
GOODWILL		—		64,893		2,958,264		37,188			—			3,060,345
TRADEMARKS AND TRADE NAMES		—		19,376		402,090		12,052			—			433,518
OTHER INTANGIBLE ASSETS - Net		—		8,466		611,564		14,220			—			634,250
DEBT ISSUE COSTS - Net		—		68,597		—		—			—			68,597
OTHER		—		2,462		11,063		168			—			13,693

TOTAL ASSETS	$	994,923	$	5,136,439	$	6,574,386	$	135,602		$	(7,641,487	)	$	5,199,863


LIABILITIES AND STOCKHOLDERS' EQUITY
CURRENT LIABILITIES:
Current portion of long-term debt	$	—	$	20,500	$	—	$	—		$	—		$	20,500
Accounts payable		—		12,011		50,245		12,403			(1,356	)		73,303
Accrued liabilities		—		52,369		57,933		6,196			—			116,498
Income taxes payable		—		—		—		—			—			—

Total current liabilities		—		84,880		108,178		18,599			(1,356	)		210,301

LONG-TERM DEBT		—		3,608,875		—		—			—			3,608,875
DEFERRED INCOME TAXES		—		320,800		2,000		—			—			322,800
OTHER NON-CURRENT LIABILITIES		—		27,511		35,550		(97	)		—			62,964

Total liabilities		—		4,042,066		145,728		18,502			(1,356	)		4,204,940

STOCKHOLDERS' EQUITY		994,923		1,094,373		6,428,658		117,100			(7,640,131	)		994,923

TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$	994,923	$	5,136,439	$	6,574,386	$	135,602		$	(7,641,487	)	$	5,199,863

TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATING BALANCE SHEET

AS OF SEPTEMBER 30, 2011


	TransDigm Group		TransDigm Inc.		Subsidiary Guarantors		Non-Guarantor Subsidiaries			Eliminations			Total Consolidated

ASSETS
CURRENT ASSETS:
Cash and cash equivalents	$	5,695	$	360,074	$	2,115	$	8,299		$	—		$	376,183
Trade accounts receivable - Net		—		11,183		170,420		8,484			(794	)		189,293
Inventories		—		23,311		233,726		8,264			16			265,317
Deferred income taxes		—		23,248		7,596		—			—			30,844
Prepaid expenses and other		—		2,571		5,451		633			—			8,655

Total current assets		5,695		420,387		419,308		25,680			(778	)		870,292

INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES		805,254		3,746,531		1,557,736		(8,494	)		(6,101,027	)		—
PROPERTY, PLANT AND EQUIPMENT - Net		—		15,903		129,566		5,331			—			150,800
GOODWILL		—		81,736		2,478,780		35,231			—			2,595,747
TRADEMARKS AND TRADE NAMES		—		19,376		313,280		12,286			—			344,942
OTHER INTANGIBLE ASSETS - Net		—		8,760		459,615		15,049			—			483,424
DEBT ISSUE COSTS - Net		—		59,007		—		—			—			59,007
OTHER		—		2,415		7,010		(1	)		—			9,424

TOTAL ASSETS	$	810,949	$	4,354,115	$	5,365,295	$	85,082		$	(6,101,805	)	$	4,513,636


LIABILITIES AND STOCKHOLDERS' EQUITY
CURRENT LIABILITIES:
Current portion of long-term debt	$	—	$	15,500	$	—	$	—		$	—		$	15,500
Accounts payable		—		8,071		49,944		4,889			(794	)		62,110
Accrued liabilities		—		52,525		65,178		2,609			—			120,312
Income taxes payable		—		5,561		3,155		221			—			8,937

Total current liabilities		—		81,657		118,277		7,719			(794	)		206,859

LONG-TERM DEBT		—		3,122,875		—		—			—			3,122,875
DEFERRED INCOME TAXES		—		199,610		110,841		—			—			310,451
OTHER NON-CURRENT LIABILITIES		—		26,717		35,785		—			—			62,502

Total liabilities		—		3,430,859		264,903		7,719			(794	)		3,702,687

STOCKHOLDERS' EQUITY		810,949		923,256		5,100,392		77,363			(6,101,011	)		810,949

TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$	810,949	$	4,354,115	$	5,365,295	$	85,082		$	(6,101,805	)	$	4,513,636

Condensed Consolidating Statement Of Income/Operations

TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATING STATEMENT OF INCOME

FOR THE TWENTY-SIX WEEK PERIOD ENDED MARCH 31, 2012

(Amounts in thousands)


	TransDigm Group			TransDigm Inc.			Subsidiary Guarantors		Non-Guarantor Subsidiaries		Eliminations			Total Consolidated

NET SALES	$	—		$	52,136		$	692,146	$	35,029	$	(3,369	)	$	775,942

COST OF SALES		—			30,404			286,659		26,653		(3,369	)		340,347


GROSS PROFIT		—			21,732			405,487		8,376		—			435,595

SELLING AND ADMINISTRATIVE EXPENSES		—			28,330			58,395		4,599		—			91,324
AMORTIZATION OF INTANGIBLE ASSETS		—			312			20,792		674		—			21,778


INCOME (LOSS) FROM OPERATIONS		—			(6,910	)		326,300		3,103		—			322,493
INTEREST EXPENSE - Net		—			100,346			244		771		—			101,361
EQUITY IN INCOME OF SUBSIDIARIES		(146,657	)		(216,157	)		—		—		362,814			—


INCOME BEFORE INCOME TAXES		146,657			108,901			326,056		2,332		(362,814	)		221,132

INCOME TAX PROVISION (BENEFIT)		—			(37,756	)		111,227		1,004		—			74,475


NET INCOME	$	146,657		$	146,657		$	214,829	$	1,328	$	(362,814	)	$	146,657

TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS

FOR THE TWENTY-SIX WEEK PERIOD ENDED APRIL 2, 2011

(Amounts in thousands)


	TransDigm Group			TransDigm Inc.			Subsidiary Guarantors		Non-Guarantor Subsidiaries			Eliminations			Total Consolidated
NET SALES	$	—		$	37,365		$	492,105	$	11,376		$	(2,987	)	$	537,859

COST OF SALES		—			21,965			223,880		9,149			(2,155	)		252,839


GROSS PROFIT		—			15,400			268,225		2,227			(832	)		285,020
SELLING AND ADMINISTRATIVE EXPENSES		—			18,622			44,037		1,032			—			63,691
AMORTIZATION OF INTANGIBLE ASSETS		—			312			14,808		619			—			15,739


INCOME (LOSS) FROM OPERATIONS		—			(3,534	)		209,380		576			(832	)		205,590

INTEREST EXPENSE - Net		—			85,659			528		506			—			86,693
REFINANCING COSTS		—			72,379			—		—			—			72,379
EQUITY IN INCOME OF SUBSIDIARIES		(48,459	)		(155,794	)		—		—			204,253			—


INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES		48,459			(5,778	)		208,852		70			(205,085	)		46,518

INCOME TAX PROVISION (BENEFIT)		—			(54,237	)		71,100		111			—			16,974


INCOME (LOSS) FROM CONTINUING OPERATIONS		48,459			48,459			137,752		(41	)		(205,085	)		29,544

INCOME FROM DISCONTINUED OPERATIONS, NET OF TAX		—			—			6,732		12,183			—			18,915


NET INCOME	$	48,459		$	48,459		$	144,484	$	12,142		$	(205,085	)	$	48,459

Condensed Consolidating Statement Of Cash Flows

TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS

FOR THE TWENTY-SIX WEEK PERIOD ENDED MARCH 31, 2012

(Amounts in thousands)


	TransDigm Group			TransDigm Inc.			Subsidiary Guarantors			Non-Guarantor Subsidiaries			Eliminations			Total Consolidated
NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES	$	—		$	(53,599	)	$	215,749		$	1,958		$	696		$	164,804

INVESTING ACTIVITIES:
Capital expenditures		—			(829	)		(8,115	)		(165	)		—			(9,109	)
Acquisition of businesses, net of cash acquired		—			(833,512	)		—			—			—			(833,512	)

Net cash used in investing activities		—			(834,341	)		(8,115	)		(165	)		—			(842,621	)


FINANCING ACTIVITIES:
Intercompany activities		(14,545	)		217,320			(202,440	)		361			(696	)		—
Excess tax benefits related to share-based payment arrangements		24,231			—			—			—			—			24,231
Proceeds from exercise of stock options		7,316			—			—			—			—			7,316
Dividends paid		(3,299	)		—			—			—			—			(3,299	)
Treasury stock purchased		(846	)		—			—			—			—			(846	)
Proceeds from new senior secured credit facility-net		—			484,713			—			—			—			484,713
Repayment on new senior secured credit facility		—			(9,000	)		—			—			—			(9,000	)

Net cash provided by (used in) financing activities		12,857			693,033			(202,440	)		361			(696	)		503,115


INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS		12,857			(194,907	)		5,194			2,154			—			(174,702	)

CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD		5,695			360,074			2,115			8,299			—			376,183


CASH AND CASH EQUIVALENTS, END OF PERIOD	$	18,552		$	165,167		$	7,309		$	10,453		$	—		$	201,481

TRANSDIGM GROUP INCORPORATED

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS

FOR THE TWENTY-SIX WEEK PERIOD ENDED APRIL 2, 2011

(Amounts in thousands)


	TransDigm Group			TransDigm Inc.			Subsidiary Guarantors			Non-Guarantor Subsidiaries			Eliminations			Total Consolidated
NET CASH PROVIDED BY (USED IN)
OPERATING ACTIVITIES	$	—		$	(49,933	)	$	237,165		$	(57,697	)	$	(384	)	$	129,151

INVESTING ACTIVITIES:
Capital expenditures		—			(1,619	)		(1,270	)		(5,497	)		—			(8,386	)
Cash proceeds from sale of discontinued operations		—			240,000			—			—			—			240,000
Acquisition of businesses, net of cash acquired		—			(1,362,202	)		—			—			—			(1,362,202	)

Net cash used in investing activities		—			(1,123,821	)		(1,270	)		(5,497	)		—			(1,130,588	)


FINANCING ACTIVITIES:
Intercompany activities		(8,907	)		166,988			(229,973	)		71,508			384			—
Excess tax benefits related to share-based payment arrangements		12,440			—			—			—			—			12,440
Proceeds from exercise of stock options		6,219			—			—			—			—			6,219
Dividends paid		(2,810	)		—			—			—			—			(2,810	)
Proceeds from new senior secured credit facility - net		—			1,500,048			—			—			—			1,500,048
Repayment on new senior secured credit facility		—			(3,875	)		—			—			—			(3,875	)
Proceeds from 2018 senior subordinated notes - net		—			1,582,534			—			—			—			1,582,534
Repurchase of 2014 senior subordinated notes		—			(1,041,894	)		—			—			—			(1,041,894	)
Repayment of previous senior secured credit facility		—			(780,000	)		—			—			—			(780,000	)

Net cash provided by (used in) financing activities		6,942			1,423,801			(229,973	)		71,508			384			1,272,662

INCREASE IN CASH AND CASH EQUIVALENTS		6,942			250,047			5,922			8,314			—			271,225

CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD		4,884			226,200			3,028			—			—			234,112


CASH AND CASH EQUIVALENTS, END OF PERIOD	$	11,826		$	476,247		$	8,950		$	8,314		$	—		$	505,337

Description Of The Business (Details)	6 Months Ended
Description Of The Business (Details)	Mar. 31, 2012
Description Of The Business [Abstract]
Percentage of ownership in subsidiary	100.00%
Interest rate of senior subordinated debt	7.75%

Acquisitions (Narrative) (Details) $ in Thousands		6 Months Ended
Acquisitions (Narrative) (Details) $ in Thousands	Feb. 15, 2012 USD ($)	Mar. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Dec. 09, 2011 USD ($)	Aug. 31, 2011 USD ($)	Jul. 02, 2011 USD ($)	Dec. 31, 2010 USD ($)	Dec. 06, 2010 USD ($)
Business Acquisition [Line Items]
Estimated useful life of aircraft (in years)		30
Acquisition of financed new senior bank debt		$ 500,000
Harco Laboratories, Incorporated [Member]
Business Acquisition [Line Items]
Cash consideration for the acquisitions				$ 83,300
Purchase price adjustment paid		$ 400
Expected recognition of goodwill not deductible for tax purposes				$ 55,000
Schneller Holdings LLC [Member]
Business Acquisition [Line Items]
Cash consideration for the acquisitions					$ 288,600
Purchase price adjustment paid			$ 1,000
Expected recognition of goodwill deductible for tax purposes					$ 167,000
Talley Actuation [Member]
Business Acquisition [Line Items]
Cash consideration for the acquisitions							$ 93,600
Purchase price adjustment received						$ 300
Expected recognition of goodwill deductible for tax purposes							$ 70,000
McKechnie Aerospace Holdings, Inc. [Member]
Business Acquisition [Line Items]
Cash consideration for the acquisitions								$ 1,270,000
Purchase price adjustment paid						$ 300
Expected recognition of goodwill not deductible for tax purposes								$ 864,934
AmSafe Global Holdings, Inc. [Member]
Business Acquisition [Line Items]
Cash consideration for the acquisitions	$ 749,300
Expected recognition of goodwill not deductible for tax purposes	437,677
Expected recognition of goodwill deductible for tax purposes	77,000
Acquisition of financed new senior bank debt	$ 500,000

Acquisitions (Preliminary Purchase Price Allocation Of Fair Values Of The Assets And Liabilities Assumed) (Details) - USD ($) $ in Thousands	Feb. 15, 2012	Dec. 06, 2010
AmSafe Global Holdings, Inc. [Member]
Business Acquisition [Line Items]
Current assets, excluding cash acquired	$ 95,729
Property, plant and equipment	25,999
Intangible assets	208,200
Goodwill	437,677
Other	8,039
Total assets acquired	775,644
Current liabilities	24,976
Other noncurrent liabilities	1,396
Total liabilities assumed	26,372
Net assets acquired	$ 749,272
McKechnie Aerospace Holdings, Inc. [Member]
Business Acquisition [Line Items]
Current assets, excluding cash acquired		$ 109,289
Property, plant and equipment		48,901
Intangible assets		433,000
Goodwill		864,934
Total assets acquired		1,456,124
Current liabilities		40,004
Deferred tax liabilities		118,591
Other noncurrent liabilities		31,837
Total liabilities assumed		190,432
Net assets acquired		$ 1,265,692

Acquisitions (Unaudited Pro Forma Consolidated Results) (Details) $ / shares in Units, $ in Thousands	6 Months Ended
	Apr. 02, 2011 USD ($) $ / shares
Acquisitions [Abstract]
Net sales	$ 579,224
Net income applicable to common stock from continuing operations	$ 20,913
Net income per share from continuing operations: Basic and diluted \| $ / shares	$ 0.39

Earnings Per Share (Computation Of Basic And Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		4 Months Ended	6 Months Ended
	Mar. 31, 2012	Apr. 02, 2011	Apr. 02, 2011	Mar. 31, 2012	Apr. 02, 2011
Earnings Per Share [Abstract]
Net income from continuing operations	$ 81,552	$ 36,697		$ 146,657	$ 29,544
Less dividends paid on participating securities				(3,299)	(2,810)
Net income from continuing operations excluding dividends	81,552	36,697		143,358	26,734
Net income from discontinued operations		19,120	$ 18,915		18,915
Net income applicable to common stock - basic and diluted	$ 81,552	$ 55,817		$ 143,358	$ 45,649
Weighted average common shares outstanding	50,800	49,815		50,615	49,656
Vested options deemed participating securities	3,082	3,518		3,267	3,677
Total shares for basic and diluted earnings per share	53,882	53,333		53,882	53,333
Net earnings per share from continuing operations - basic and diluted	$ 1.51	$ 0.69		$ 2.66	$ 0.50
Net earnings per share from discontinued operations - basic and diluted		0.35			0.35
Net earnings per share	$ 1.51	$ 1.04		$ 2.66	$ 0.85

Inventories (Details) - USD ($) $ in Thousands	Mar. 31, 2012	Sep. 30, 2011
Inventories [Abstract]
Raw materials and purchased component parts	$ 199,151	$ 160,402
Work-in-progress	102,246	85,612
Finished goods	58,119	43,192
Total	359,516	289,206
Reserve for excess and obsolete inventory and LIFO	(32,911)	(23,889)
Inventories - net	$ 326,605	$ 265,317
Percentage of inventory valued under LIFO method	5.00%

Intangible Assets (Narrative) (Details) - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2012	Apr. 02, 2011
Intangible Assets [Abstract]
Aggregate amortization expense	$ 21,875	$ 15,739
Estimated amortization expense 2012	44,400
Estimated amortization expense 2013	37,700
Estimated amortization expense 2014	35,600
Estimated amortization expense 2015	35,600
Estimated amortization expense 2016	35,600
Estimated amortization expense 2017	$ 35,600

Intangible Assets (Intangible Assets Subject To Amortization) (Details) - USD ($) $ in Thousands	Mar. 31, 2012	Sep. 30, 2011
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 752,499	$ 582,498
Accumulated Amortization	118,249	99,074
Net	634,250	483,424
Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	680,745	546,726
Accumulated Amortization	89,238	75,426
Net	591,507	471,300
Order Backlog [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	28,710	24,799
Accumulated Amortization	22,011	17,895
Net	6,699	6,904
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	43,044	10,973
Accumulated Amortization	7,000	5,753
Net	$ 36,044	$ 5,220

Intangible Assets (Intangible Assets Acquired) (Details) $ in Thousands	6 Months Ended
	Mar. 31, 2012 USD ($)
Finite-Lived Intangible Assets [Line Items]
Intangible assets not subject to amortization	$ 580,393
Intangible assets subject to amortization	142,160
Total - Intangible assets both subject to and not subject to amortization	722,553
Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets subject to amortization	$ 132,850
Amortization Period (in years)	20
Order Backlog [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets subject to amortization	$ 6,410
Amortization Period (in years)	1
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets subject to amortization	$ 2,900
Amortization Period (in years)	20
Goodwill [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets not subject to amortization	$ 492,883
Trademarks And Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets not subject to amortization	$ 87,510

Intangible Assets (Summary Of Changes In The Carrying Value Of Goodwill) (Details) $ in Thousands	6 Months Ended
	Mar. 31, 2012 USD ($)
Intangible Assets [Abstract]
Balance, September 30, 2011	$ 2,595,747
Goodwill acquired during the year	492,883
Purchase price allocation adjustments	(26,843)
Other	(1,442)
Balance, March 31, 2012	$ 3,060,345

- Definition

Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 45
-Subparagraph e
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 43
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 68
-Subparagraph l
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6905597&loc=d3e13816-109267

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 72
-Subparagraph d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 45
-Subparagraph e
-Clause 1
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 34
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

- Definition

The increase (decrease) in the recorded value of goodwill for foreign currency translation adjustments and purchase accounting adjustments needed to revise the carrying amount of goodwill to fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Subparagraph e
-Paragraph 45
-Clause 6
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=6905597&loc=d3e13816-109267

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 72
-Subparagraph d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Subparagraph e
-Paragraph 45
-Clause 3
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Subparagraph e
-Paragraph 45
-Clause 7
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Product Warranty (Narrative) (Details)	6 Months Ended
Product Warranty (Narrative) (Details)	Mar. 31, 2012 d yr
Product Warranty Liability [Line Items]
Warranty period for products sold, (less than, in years)	2
Maximum [Member]
Product Warranty Liability [Line Items]
Maximum warranty period, years	6
Minimum [Member]
Product Warranty Liability [Line Items]
Minimum warranty period, days \| d	90

Product Warranty (Reconciliation Of Changes In The Product Warranty Liability) (Details) - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2012	Apr. 02, 2011
Product Warranty [Abstract]
Liability balance at beginning of period	$ 8,722	$ 8,345
Accruals for warranties issued	345	581
Warranty costs incurred	(1,053)	(1,393)
Acquisitions	217	91
Liability balance at end of period	$ 8,231	$ 7,624

Debt (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Debt (Details) - USD ($) $ in Millions	Mar. 31, 2012	Mar. 31, 2012	Feb. 15, 2012
Debt [Abstract]
Additional term loan, New Senior Secured Credit Facility		$ 500.0
Date the credit facility was fully drawn	February 15, 2012
Maturity date of Credit Facility	February 2017
Quarterly principal payments		1.3
Borrowings available under Revolving Credit Facility			$ 65.0
Total Revolving credit amount	$ 310.0	$ 310.0

Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
Income Taxes (Details) - USD ($) $ in Millions	Mar. 31, 2012	Apr. 02, 2011	Mar. 31, 2012	Apr. 02, 2011	Sep. 30, 2011
Income Taxes [Abstract]
Effective income tax rate	34.70%	36.10%	33.70%	36.50%
Non-recurring benefit adjustment to state income tax expense due to changes in state tax laws			$ 2.8
Unrecognized tax benefits	$ 9.3		9.3		$ 7.6
Effect of unrecognized tax benefits on effective tax rate	$ 8.2		$ 8.2		$ 7.0
Duration for change in unrecognized tax benefits			12 months

Fair Value Measurements (Carrying Amounts And Fair Values Of Financial Instruments) (Details) - USD ($)
$ in Thousands

Mar. 31, 2012

Sep. 30, 2011

Apr. 02, 2011

Sep. 30, 2010

Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]

Cash and cash equivalents, Assets, Carrying Amount

$ 201,481

$ 376,183

$ 505,337

$ 234,112

Level 1 [Member]

Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]

Cash and cash equivalents, Assets, Carrying Amount

201,481

376,183

Cash and cash equivalents, Assets, Fair Value

201,481

376,183

Level 2 [Member]

Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]

Interest rate swaps, Liabilities, Carrying Amount

^[1]

7,500

5,600

Interest rate swaps, Liabilities, Fair Value

^[1]

7,500

5,600

Foreign currency exchange contracts, Liabilities, Carrying Amount

Foreign currency exchange contracts, Liabilities, Fair Value

Term Loans [Member] | Level 2 [Member]

Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]

Term loans, Liabilities, Carrying Amount

2,029,375

1,538,375

Term loans, Liabilities, Fair Value

$ 2,040,000

1,496,000

7 3/4% Senior Subordinated Notes Due 2018 [Member]

Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]

Interest rate

7.75%

7 3/4% Senior Subordinated Notes Due 2018 [Member] | Level 1 [Member]

Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]

Senior Subordinated Notes, Liabilities, Carrying Amount

$ 1,600,000

1,600,000

Senior Subordinated Notes, Liabilities, Fair Value

$ 1,696,000

$ 1,616,000

[1]	Included in Other non-current liabilities on the Condensed Consolidated Balance Sheet.

Derivatives And Hedging Activities (Details) $ in Millions	6 Months Ended
Derivatives And Hedging Activities (Details) $ in Millions	Mar. 31, 2012 USD ($)
Derivative [Line Items]
Amount of outstanding foreign currency exchange contracts	$ 1.5
Maturity of foreign currency derivatives range, start	April 2012
Maturity of foreign currency derivatives range, end	September 2012
New Senior Secured Credit Facility [Member]
Derivative [Line Items]
Interest rate swap, notional amount	$ 353.0
Fixed rate of interest under interest rate swap	5.17%
Interest rate swap agreements description	2.17% plus the 3% margin percentage

Comprehensive Income (Details) - USD ($) $ in Thousands	6 Months Ended
Comprehensive Income (Details) - USD ($) $ in Thousands	Mar. 31, 2012	Apr. 02, 2011
Comprehensive Income [Abstract]
Comprehensive income (loss), net of tax	$ 144,660	$ 51,300

- Definition

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 8, 9, 10, 11, 12, 13, 14
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 30
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph A5
-Appendix A

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6920043&loc=d3e557-108580

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Net Income
-URI http://asc.fasb.org/extlink&oid=6518256

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Other Comprehensive Income
-URI http://asc.fasb.org/extlink&oid=6519514

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6920043&loc=d3e540-108580

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Comprehensive Income
-URI http://asc.fasb.org/extlink&oid=6508144

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 38
-Subparagraph c(3)
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Discontinued Operations (Narrative) (Details) - USD ($) $ in Thousands		1 Months Ended	3 Months Ended		4 Months Ended	6 Months Ended
	Apr. 07, 2011	Mar. 09, 2011	Jul. 02, 2011	Apr. 02, 2011	Apr. 02, 2011	Apr. 02, 2011
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from divestiture of business						$ 240,000
Gain on sale of discontinued operations, net of tax				$ 20,956	$ 20,956
Fastener Business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from divestiture of business		$ 239,600
Gain on sale of discontinued operations, net of tax		21,000
Gain on sale of discontinued operations		$ 59,500
Working capital adjustment			$ 400
Aero Quality Sales [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from divestiture of business	$ 31,800
Working capital adjustment			$ 1,800

- Definition

Pretax gain (loss), not previously recognized and resulting from the sale of a business component, which is recognized at the date of sale. A gain (loss) reflects the amount by which the consideration received exceeds (is exceeded by) the net carrying amount (reflecting previous provisions for loss on disposal, if any) of the disposal group.

+ References + Details

- Definition

Gain (loss) after tax expense or benefit, not previously recognized and resulting from the sale of a business component, which is recognized at the date of sale. A gain (loss) reflects the amount by which the consideration received exceeds (is exceeded by) the net carrying amount (reflecting previous provisions for loss on disposal, if any) of the disposal group.

+ References + Details

Discontinued Operations (Summarized Operating Results For The Discontinued Fastener Business And AQS) (Details) - USD ($) $ in Thousands	3 Months Ended	4 Months Ended	6 Months Ended
	Apr. 02, 2011	Apr. 02, 2011	Apr. 02, 2011
Discontinued Operations [Abstract]
Net sales	$ 17,313	$ 23,802
Loss from discontinued operations before income taxes	(2,764)	(2,835)
Income tax benefit	928	794
Loss from discontinued operations	(1,836)	(2,041)
Gain on sale of discontinued operations, net of tax	20,956	20,956
Income from discontinued operations	$ 19,120	$ 18,915	$ 18,915

- Definition

+ References + Details

- Definition

Overall income (loss) from a disposal group that is classified as a component of the entity, before income tax, reported as a separate component of income before extraordinary items. Includes the following (before income tax): income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

+ References + Details

- Definition

Tax effect allocated to a disposal group that is classified as a component of the entity reported as a separate component of income before extraordinary items. Includes the tax effects of the following: income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 144
-Paragraph 43
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 144
-Paragraph 47
-Subparagraph c
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 46
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e957-107759

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32672-109319

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b),(c)
-URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 20
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6909487&loc=d3e38679-109324

+ Details

- Definition

This element represents the overall income (loss) from a disposal group that is classified as a component of the entity, net of income tax, reported as a separate component of income before extraordinary items before deduction or consideration of the amount which may be allocable to noncontrolling interests, if any. Includes the following (net of tax): income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 144
-Paragraph 43
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 144
-Paragraph 47
-Subparagraph c
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 29
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 5
-Section 03
-Paragraph 15

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph 13
-Article 7

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e957-107759

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04.12)
-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.14)
-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

+ Details

Supplemental Guarantor Information (Condensed Consolidating Balance Sheet) (Details) - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2012	Sep. 30, 2011	Apr. 02, 2011	Sep. 30, 2010
Supplemental Guarantor Information [Line Items]
Cash and cash equivalents	$ 201,481	$ 376,183	$ 505,337	$ 234,112
Trade accounts receivable - Net	240,458	189,293
Inventories	326,605	265,317
Income taxes receivable	12,200
Prepaid expenses and other	10,568	8,655
Deferred income taxes	23,770	30,844
Total current assets	815,082	870,292
PROPERTY, PLANT AND EQUIPMENT - Net	174,378	150,800
GOODWILL	3,060,345	2,595,747
TRADEMARKS AND TRADE NAMES	433,518	344,942
OTHER INTANGIBLE ASSETS - Net	634,250	483,424
DEBT ISSUE COSTS - Net	68,597	59,007
OTHER	13,693	9,424
TOTAL ASSETS	5,199,863	4,513,636
Current portion of long-term debt	20,500	15,500
Accounts payable	73,303	62,110
Accrued liabilities	116,498	120,312
Income taxes payable		8,937
Total current liabilities	210,301	206,859
LONG-TERM DEBT	3,608,875	3,122,875
DEFERRED INCOME TAXES	322,800	310,451
OTHER NON-CURRENT LIABILITIES	62,964	62,502
Total liabilities	4,204,940	3,702,687
STOCKHOLDERS' EQUITY	994,923	810,949
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 5,199,863	4,513,636
Interest rate of senior subordinated debt	7.75%
TransDigm Group [Member]
Supplemental Guarantor Information [Line Items]
Cash and cash equivalents	$ 18,552	5,695	11,826	4,884
Total current assets	18,552	5,695
INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES	976,371	805,254
TOTAL ASSETS	994,923	810,949
STOCKHOLDERS' EQUITY	994,923	810,949
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	994,923	810,949
TransDigm Inc. [Member]
Supplemental Guarantor Information [Line Items]
Cash and cash equivalents	165,167	360,074	476,247	226,200
Trade accounts receivable - Net	12,438	11,183
Inventories	22,540	23,311
Income taxes receivable	12,949
Prepaid expenses and other	1,337	2,571
Deferred income taxes	23,770	23,248
Total current assets	238,201	420,387
INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES	4,718,730	3,746,531
PROPERTY, PLANT AND EQUIPMENT - Net	15,714	15,903
GOODWILL	64,893	81,736
TRADEMARKS AND TRADE NAMES	19,376	19,376
OTHER INTANGIBLE ASSETS - Net	8,466	8,760
DEBT ISSUE COSTS - Net	68,597	59,007
OTHER	2,462	2,415
TOTAL ASSETS	5,136,439	4,354,115
Current portion of long-term debt	20,500	15,500
Accounts payable	12,011	8,071
Accrued liabilities	52,369	52,525
Income taxes payable		5,561
Total current liabilities	84,880	81,657
LONG-TERM DEBT	3,608,875	3,122,875
DEFERRED INCOME TAXES	320,800	199,610
OTHER NON-CURRENT LIABILITIES	27,511	26,717
Total liabilities	4,042,066	3,430,859
STOCKHOLDERS' EQUITY	1,094,373	923,256
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	5,136,439	4,354,115
Subsidiary Guarantors [Member]
Supplemental Guarantor Information [Line Items]
Cash and cash equivalents	7,309	2,115	8,950	$ 3,028
Trade accounts receivable - Net	204,667	170,420
Inventories	274,256	233,726
Prepaid expenses and other	7,063	5,451
Deferred income taxes		7,596
Total current assets	493,295	419,308
INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES	1,953,253	1,557,736
PROPERTY, PLANT AND EQUIPMENT - Net	144,857	129,566
GOODWILL	2,958,264	2,478,780
TRADEMARKS AND TRADE NAMES	402,090	313,280
OTHER INTANGIBLE ASSETS - Net	611,564	459,615
OTHER	11,063	7,010
TOTAL ASSETS	6,574,386	5,365,295
Accounts payable	50,245	49,944
Accrued liabilities	57,933	65,178
Income taxes payable		3,155
Total current liabilities	108,178	118,277
DEFERRED INCOME TAXES	2,000	110,841
OTHER NON-CURRENT LIABILITIES	35,550	35,785
Total liabilities	145,728	264,903
STOCKHOLDERS' EQUITY	6,428,658	5,100,392
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	6,574,386	5,365,295
Non-Guarantor Subsidiaries [Member]
Supplemental Guarantor Information [Line Items]
Cash and cash equivalents	10,453	8,299	$ 8,314
Trade accounts receivable - Net	24,709	8,484
Inventories	29,793	8,264
Income taxes receivable	(749)
Prepaid expenses and other	2,168	633
Total current assets	66,374	25,680
INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES	(8,207)	(8,494)
PROPERTY, PLANT AND EQUIPMENT - Net	13,807	5,331
GOODWILL	37,188	35,231
TRADEMARKS AND TRADE NAMES	12,052	12,286
OTHER INTANGIBLE ASSETS - Net	14,220	15,049
OTHER	168	(1)
TOTAL ASSETS	135,602	85,082
Accounts payable	12,403	4,889
Accrued liabilities	6,196	2,609
Income taxes payable		221
Total current liabilities	18,599	7,719
OTHER NON-CURRENT LIABILITIES	(97)
Total liabilities	18,502	7,719
STOCKHOLDERS' EQUITY	117,100	77,363
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	135,602	85,082
Eliminations [Member]
Supplemental Guarantor Information [Line Items]
Trade accounts receivable - Net	(1,356)	(794)
Inventories	16	16
Total current assets	(1,340)	(778)
INVESTMENT IN SUBSIDIARIES AND INTERCOMPANY BALANCES	(7,640,147)	(6,101,027)
TOTAL ASSETS	(7,641,487)	(6,101,805)
Accounts payable	(1,356)	(794)
Total current liabilities	(1,356)	(794)
Total liabilities	(1,356)	(794)
STOCKHOLDERS' EQUITY	(7,640,131)	(6,101,011)
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ (7,641,487)	$ (6,101,805)

Supplemental Guarantor Information (Condensed Consolidating Statement Of Income/Operations) (Details) - USD ($) $ in Thousands	3 Months Ended		4 Months Ended	6 Months Ended
	Mar. 31, 2012	Apr. 02, 2011	Apr. 02, 2011	Mar. 31, 2012	Apr. 02, 2011
Supplemental Guarantor Information [Line Items]
NET SALES	$ 423,469	$ 304,307		$ 775,942	$ 537,859
COST OF SALES	187,429	146,433		340,347	252,839
GROSS PROFIT	236,040	157,874		435,595	285,020
SELLING AND ADMINISTRATIVE EXPENSES	49,474	33,171		91,324	63,691
AMORTIZATION OF INTANGIBLE ASSETS	9,339	11,462		21,778	15,739
INCOME (LOSS) FROM OPERATIONS	177,227	113,241		322,493	205,590
INTEREST EXPENSE - Net	52,300	54,137		101,361	86,693
REFINANCING COSTS		1,649			72,379
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	124,927	57,455		221,132	46,518
INCOME TAX PROVISION (BENEFIT)	43,375	20,758		74,475	16,974
INCOME (LOSS) FROM CONTINUING OPERATIONS	81,552	36,697		146,657	29,544
INCOME FROM DISCONTINUED OPERATIONS, NET OF TAX		19,120	$ 18,915		18,915
NetIncomeLoss	$ 81,552	$ 55,817		146,657	48,459
TransDigm Group [Member]
Supplemental Guarantor Information [Line Items]
EQUITY IN INCOME OF SUBSIDIARIES				(146,657)	(48,459)
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES				146,657	48,459
INCOME (LOSS) FROM CONTINUING OPERATIONS					48,459
NetIncomeLoss				146,657	48,459
TransDigm Inc. [Member]
Supplemental Guarantor Information [Line Items]
NET SALES				52,136	37,365
COST OF SALES				30,404	21,965
GROSS PROFIT				21,732	15,400
SELLING AND ADMINISTRATIVE EXPENSES				28,330	18,622
AMORTIZATION OF INTANGIBLE ASSETS				312	312
INCOME (LOSS) FROM OPERATIONS				(6,910)	(3,534)
INTEREST EXPENSE - Net				100,346	85,659
REFINANCING COSTS					72,379
EQUITY IN INCOME OF SUBSIDIARIES				(216,157)	(155,794)
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES				108,901	(5,778)
INCOME TAX PROVISION (BENEFIT)				(37,756)	(54,237)
INCOME (LOSS) FROM CONTINUING OPERATIONS					48,459
NetIncomeLoss				146,657	48,459
Subsidiary Guarantors [Member]
Supplemental Guarantor Information [Line Items]
NET SALES				692,146	492,105
COST OF SALES				286,659	223,880
GROSS PROFIT				405,487	268,225
SELLING AND ADMINISTRATIVE EXPENSES				58,395	44,037
AMORTIZATION OF INTANGIBLE ASSETS				20,792	14,808
INCOME (LOSS) FROM OPERATIONS				326,300	209,380
INTEREST EXPENSE - Net				244	528
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES				326,056	208,852
INCOME TAX PROVISION (BENEFIT)				111,227	71,100
INCOME (LOSS) FROM CONTINUING OPERATIONS					137,752
INCOME FROM DISCONTINUED OPERATIONS, NET OF TAX					6,732
NetIncomeLoss				214,829	144,484
Non-Guarantor Subsidiaries [Member]
Supplemental Guarantor Information [Line Items]
NET SALES				35,029	11,376
COST OF SALES				26,653	9,149
GROSS PROFIT				8,376	2,227
SELLING AND ADMINISTRATIVE EXPENSES				4,599	1,032
AMORTIZATION OF INTANGIBLE ASSETS				674	619
INCOME (LOSS) FROM OPERATIONS				3,103	576
INTEREST EXPENSE - Net				771	506
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES				2,332	70
INCOME TAX PROVISION (BENEFIT)				1,004	111
INCOME (LOSS) FROM CONTINUING OPERATIONS					(41)
INCOME FROM DISCONTINUED OPERATIONS, NET OF TAX					12,183
NetIncomeLoss				1,328	12,142
Eliminations [Member]
Supplemental Guarantor Information [Line Items]
NET SALES				(3,369)	(2,987)
COST OF SALES				(3,369)	(2,155)
GROSS PROFIT					(832)
INCOME (LOSS) FROM OPERATIONS					(832)
EQUITY IN INCOME OF SUBSIDIARIES				362,814	204,253
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES				(362,814)	(205,085)
INCOME (LOSS) FROM CONTINUING OPERATIONS					(205,085)
NetIncomeLoss				$ (362,814)	$ (205,085)

Supplemental Guarantor Information (Condensed Consolidating Statement Of Cash Flows) (Details) - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2012	Apr. 02, 2011
Supplemental Guarantor Information [Line Items]
NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES	$ 164,804	$ 129,151
Capital expenditures	(9,109)	(8,386)
Cash proceeds from sale of discontinued operations		240,000
Acquisition of businesses, net of cash acquired	(833,512)	(1,362,202)
Net cash used in investing activities	(842,621)	(1,130,588)
Excess tax benefits related to share-based payment arrangements	24,231	12,440
Proceeds from exercise of stock options	7,316	6,219
Dividends paid	(3,299)	(2,810)
Treasury stock purchased	(846)
Proceeds from new senior secured credit facility - net	484,713	1,500,048
Repayment on new senior secured credit facility	(9,000)	(3,875)
Proceeds from 2018 senior subordinated notes - net		1,582,534
Repurchase of 2014 senior subordinated notes		(1,041,894)
Repayment of previous senior secured credit facility		(780,000)
Net cash provided by (used in) financing activities	503,115	1,272,662
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(174,702)	271,225
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	376,183	234,112
CASH AND CASH EQUIVALENTS, END OF PERIOD	201,481	505,337
TransDigm Group [Member]
Supplemental Guarantor Information [Line Items]
Intercompany activities	(14,545)	(8,907)
Excess tax benefits related to share-based payment arrangements	24,231	12,440
Proceeds from exercise of stock options	7,316	6,219
Dividends paid	(3,299)	(2,810)
Treasury stock purchased	(846)
Net cash provided by (used in) financing activities	12,857	6,942
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	12,857	6,942
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	5,695	4,884
CASH AND CASH EQUIVALENTS, END OF PERIOD	18,552	11,826
TransDigm Inc. [Member]
Supplemental Guarantor Information [Line Items]
NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES	(53,599)	(49,933)
Capital expenditures	(829)	(1,619)
Cash proceeds from sale of discontinued operations		240,000
Acquisition of businesses, net of cash acquired	(833,512)	(1,362,202)
Net cash used in investing activities	(834,341)	(1,123,821)
Intercompany activities	217,320	166,988
Proceeds from new senior secured credit facility - net	484,713	1,500,048
Repayment on new senior secured credit facility	(9,000)	(3,875)
Proceeds from 2018 senior subordinated notes - net		1,582,534
Repurchase of 2014 senior subordinated notes		(1,041,894)
Repayment of previous senior secured credit facility		(780,000)
Net cash provided by (used in) financing activities	693,033	1,423,801
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(194,907)	250,047
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	360,074	226,200
CASH AND CASH EQUIVALENTS, END OF PERIOD	165,167	476,247
Subsidiary Guarantors [Member]
Supplemental Guarantor Information [Line Items]
NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES	215,749	237,165
Capital expenditures	(8,115)	(1,270)
Net cash used in investing activities	(8,115)	(1,270)
Intercompany activities	(202,440)	(229,973)
Net cash provided by (used in) financing activities	(202,440)	(229,973)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	5,194	5,922
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	2,115	3,028
CASH AND CASH EQUIVALENTS, END OF PERIOD	7,309	8,950
Non-Guarantor Subsidiaries [Member]
Supplemental Guarantor Information [Line Items]
NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES	1,958	(57,697)
Capital expenditures	(165)	(5,497)
Net cash used in investing activities	(165)	(5,497)
Intercompany activities	361	71,508
Net cash provided by (used in) financing activities	361	71,508
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	2,154	8,314
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	8,299
CASH AND CASH EQUIVALENTS, END OF PERIOD	10,453	8,314
Eliminations [Member]
Supplemental Guarantor Information [Line Items]
NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES	696	(384)
Intercompany activities	(696)	384
Net cash provided by (used in) financing activities	$ (696)	$ 384