The Trig Avionics (UK) TT31 Mode S stack transponder is a class leader in its category. It features unrivaled installation benefits and class-leading performance. ADS-B Out capable including being certified to TSO-C166b.
Trig’s TT31 is a direct replacement for Bendix King’s KT76A, KT76C, and KT78A series. The TT31 is designed to fit directly into an existing tray, requiring minimal installation time and cost. Many popular GPS systems, including the Garmin GNS and GTN series, as well as the Trig TN70, are compatible with the TT31. A flight timer, stop watch, and altitude monitor are also included.
