Transdigm Group (TDG)

$250 Million of Senior Subordinated Notes

CLEVELAND, Jan. 17 /PRNewswire-FirstCall/ — TransDigm Group Incorporated (NYSE: TDG) announced today that its wholly-owned subsidiary, TransDigm Inc., is planning to issue $250 million of senior subordinated notes to finance its previously announced $430 million acquisition of Aviation Technologies, Inc. (“ATI”). The senior subordinated notes are intended to be an additional issuance of notes under the indenture pursuant to which TransDigm Inc. previously issued $275 million of senior subordinated notes in June 2006. In connection with the offering of the senior subordinated notes and also to finance the acquisition of ATI, TransDigm Inc. is seeking to raise $180 million of term loans through a tack-on to its existing $650 million senior secured term loan facility. In connection with these transactions, TransDigm Inc. also intends to increase its existing senior secured revolving credit facility from $150 million to $200 million, but does not currently intend to draw any amounts from this facility in connection with the closing of the ATI transaction.

The senior subordinated notes will not be registered under the Securities Act of 1933 or any state securities laws and, unless so registered, may not be offered or sold in the United States except pursuant to an applicable exemption from the registration requirements of the Securities Act of 1933 and applicable state securities laws.

This press release does not and will not constitute an offer to sell or the solicitation of an offer to buy the senior subordinated notes, nor shall there be any sale of the senior subordinated notes in any state in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state. This press release is being issued pursuant to and in accordance with Rule 135c under the Securities Act of 1933.

8 ³/8% Senior Subordinated Notes

In connection with the Mergers, TransDigm Inc. (as successor by merger to TD Funding Corporation) also issued $400 million aggregate principal amount of 8 ³/8% senior subordinated notes, which did not require principal payments prior to their maturity in July 2011. In May 2006, TransDigm Inc. commenced a tender offer to purchase for cash any and all of our outstanding 8 ³/8% senior subordinated notes, and, in connection therewith, we solicited consents to amend the indenture governing such notes to, among other things, eliminate substantially all of the restrictive covenants and eliminate or modify certain events of default. On June 23, 2006, we closed the tender offer and consent solicitation for the 8 ³/8% senior subordinated notes. In connection with the closing of the refinancing, we purchased all of the issued and outstanding 8 ³/8% senior subordinated notes that were validly tendered, totaling $399,670,000 in aggregate principal amount. On August 7, 2006, we redeemed all of the 8 ³/8% senior subordinated notes that remained outstanding after the consummation of the tender offer for such notes.