The TT31 is a power-efficient, inexpensive, Mode S transponder that meets the European elementary surveillance requirements. The TT31 fits in the same mounting tray as the KT76A transponder, making it a great choice for either upgrades or new installations. With a new software upgrade and a connection to an appropriate GPS, this will make the TT31 compliant with the FAA final rule on ADS-B Out for 2020. Follow this link to be re-directed to Trigs pre-approved Minor Changes listing for the TT31. Sharman Avionics also has a comprehensive listing of EASA approved minor modifications not listed on the Trigs website. Contact us for more information.

European Mode S

Low Power Consumption

No Cavity Tube

240 Watts Nominal Output

Plug and Play Installation

Backlit LCD Display

Easy to Use Rotary Knobs

Timer/Stopwatch Function

Altitude Monitor

Certified 1090ES/ADS-B Out (TSO C166b)

European ETSO and FAA TSO approved