TransDigm Group Inc. has acquired the stock of Aircraft Parts Corp. (APC) from Unison Industries LLC, a wholly owned subsidiary of GE Aviation. APC designs and manufactures starter generators, generator control units, and related components for turbine engines. Major customers include Cessna, Bell, Augusta, and Bombardier. Over 90% of APC's sales are to commercial aerospace customers, and a significant portion is to the aftermarket. The products complement TransDigm's existing motor and power conditioning and control businesses, and their aftermarket applications fit TransDigm's business strategy.