TransDigm's aviation components transcend any single airframe. Operating through several subsidiaries, TransDigm Group makes and distributes a wide range of components for commercial and military aircraft. Subsidiaries include AeroControlex (mechanical controls, pumps, valves), Adams Rite Aerospace (cockpit security products, electromechanical controls, interior latches and locks), Marathon Norco Aerospace (batteries, connectors), and Champion Aerospace (ignition systems and components). TransDigm estimates that its products are installed on about 95,000 transport, military, and general aviation aircraft.