On July 24, 2009, TransDigm Inc. ("TransDigm") acquired the stock of Acme Aerospace, Inc. ("Acme") from Key Components, Inc., a wholly-owned subsidiary of Actuant Corporation, for approximately $40 million in cash (the "Stock Purchase"). Acme designs and manufactures fibrous nickel cadmium (FNC) main ship batteries, battery chargers, battery back-up systems and power conversion equipment.

On July 27, 2009, in connection with the Stock Purchase and in accordance with the terms of that certain Indenture, dated as of June 23, 2006, by and among TransDigm, TransDigm Group Incorporated ("TD Group"), The Bank of New York Trust Company, N.A., as trustee (the "Trustee"), and the other parties named therein (as supplemented, the "Indenture"), as supplemented by the First Supplemental Indenture, dated as of November 2, 2006, the Second Supplemental Indenture, dated as of February 7, 2007, the Third Supplemental Indenture, dated as of June 29, 2007, the Fourth Supplemental Indenture, dated as of August 10, 2007, the Fifth Supplemental Indenture, dated as of May 7, 2008, and the Sixth Supplemental Indenture, dated December 18, 2008, in each case among TD Group, the subsidiaries of TransDigm named therein and the Trustee, TransDigm, TD Group, Acme, certain other direct and indirect subsidiaries of TransDigm named therein and the Trustee entered into a Seventh Supplemental Indenture to the Indenture (the "Seventh Supplemental Indenture"). Pursuant to the terms of the Seventh Supplemental Indenture, Acme agreed to, among other things, guarantee all of the indebtedness of TransDigm outstanding under the Indenture.

In addition, on July 27, 2009, in connection with the Stock Purchase and in accordance with the terms of that certain (i) Credit Agreement, dated as of June 23, 2006, among TransDigm, TD Group and the other parties named therein, as amended by that certain Amendment No. 1, Consent and Agreement, dated as of January 25, 2007 (as so amended, the "Credit Agreement"), and (ii) Guarantee and Collateral Agreement, dated as of June 23, 2006, among TransDigm, TD Group, Credit Suisse, as administrative agent and collateral agent, and the other parties named therein (as previously supplemented, the "Guarantee and Collateral Agreement"), Acme and Credit Suisse entered into Supplement No. 7 to the Guarantee and Collateral Agreement ("Supplement No. 7") and a Joinder Agreement to the Credit Agreement (the "Joinder Agreement"). Pursuant to the terms of Supplement No. 7, Acme agreed to, among other things, guarantee all of the indebtedness of TransDigm outstanding under the Credit Agreement from time to time. In addition, under the terms of Supplement No. 7, Acme pledged substantially all of its assets to secure its guaranteed obligations under the Credit Agreement. Pursuant to the terms of the Joinder Agreement, Acme has agreed that it will deemed to be a "Loan Party" and a "Loan Guarantor" for all purposes of the Credit Agreement.

The above summaries of the Seventh Supplemental Indenture, Supplement No. 7 and the Joinder Agreement are qualified in their entirety by reference to the Seventh Supplemental Indenture, Supplement No. 7 and the Joinder Agreement, which are attached hereto as Exhibits 10.1, 10.2 and 10.3 and incorporated herein by reference.

A copy of the July 27, 2009 press release announcing the Stock Purchase is attached to this Report as Exhibit 99.1.

(d) Exhibits

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

10.1    Seventh Supplemental Indenture, dated as of July 27, 2009, among TransDigm
        Inc., TransDigm Group Incorporated, the guarantors listed on the signature
        pages thereto and The Bank of New York Trust Company, N.A., as trustee.

10.2    Supplement No. 7, dated as of July 27, 2009, between Acme Aerospace, Inc.
        and Credit Suisse, as collateral agent and administrative agent, to the
        Guarantee and Collateral Agreement, dated as of June 23, 2006, among
        TransDigm Inc., TransDigm Group Incorporated, the subsidiaries of
        TransDigm Inc. named therein and Credit Suisse, as administrative agent
        and collateral agent.

10.3    Joinder Agreement, dated as of July 27, 2009, between Acme Aerospace, Inc.
        and Credit Suisse, as agent.

99.1    Press Release issued July 27, 2009.