Trig TT31 Transponder Complete Kit | KT76A KT78A Replacement with ADS-B Out

The Trig TT31 is a certified Mode S Class 1 transponder and an excellent upgrade for aircraft currently equipped with a Bendix/King KT76A or KT78A. In many retrofit installations, it can serve as a slide-in replacement, helping reduce installation time, wiring changes, and overall panel integration cost. The TT31 is also 1090ES ADS-B Out capable when installed as part of an approved ADS-B solution.