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- S-4 Registration of securities issued in business combination transactions
- 3.2 Amended and Restated Bylaws
- 5.1 Opinion of Jones Day
- 5.2 Opinion of Baker Hostetler LLP
- 5.3 Opinion of Perkins Coie LLP
- 12.1 Statement of Computation of Ratio of Earnings to Fixed Charges
- 21.1 Subsidiaries of Transdigm Group Incorporated
- 23.1 Consent of Independent Registered Public Accounting Firm
- 23.2 Consent of Independent Auditors
- 25.1 Statement of Eligibility of Trustee
- 99.1 Form of Letter of Transmittal
- 99.2 Form of Notice of Guaranteed Delivery
- 99.3 Form of Letter to Clients
- 99.4 Form of Letter to Nominees
- 6 Feb 13 Registration of securities issued in business combination transactions
- 16 Aug 11 Registration of securities issued in business combination transactions (amended)
- 4 Aug 11 Registration of securities issued in business combination transactions (amended)
- 8 Jun 11 Registration of securities issued in business combination transactions
- 13 May 10 Registration of securities issued in business combination transactions (amended)
- 16 Mar 10 Registration of securities issued in business combination transactions
- 19 Jul 07 Registration of securities issued in business combination transactions (amended)
Exhibit 23.1
Consent of Independent Registered Public Accounting Firm
We consent to the reference to our firm under the caption “Experts” in the Registration Statement (Form S-4 No. 333-XXXXX) and related Prospectus of TransDigm Group Incorporated for the registration of up to $1.6 billion of its 7 3/4% Senior Subordinated Notes due 2018 and to the incorporation by reference therein of our report dated November 15, 2010, with respect to the consolidated financial statements and schedule of TransDigm Group Incorporated, and the effectiveness of internal control over financial reporting of TransDigm Group Incorporated, included in its Annual Report (Form 10-K) for the year ended September 30, 2010, filed with the Securities and Exchange Commission.
/s/ Ernst & Young LLP
Cleveland, Ohio
June 8, 2011