Trig STC adds 650 aircraft types

November 12, 2014

Trig’s TT31 ADS-B transponder FAA STC has just got better!

Trig is pleased to announce that 650 aircraft types have now been added. This makes the TT31 the logical choice for virtually all fixed wing GA pilots. Trig’s TT31 transponder is a highly cost effective ADS-B solution, because it can be used with popular GNS 400W and 500W navigators. Installing Trig as the hub of your ADS-B Out solution with the Trig STC is both simple and affordable.

The benefits of the TT31 have been recognised by Heritage Aviation – a respected avionics and maintenance shop in South Burlington, Vermont. Tom MacArthur is the Avionics Manager in this established Part 145 facility. He said, “We’ve carried out recent TT31 ADS-B compliant installs using Trig’s STC. I found Peregrine (Trig’s STC Partner) extremely helpful, they sent the STC kit straight across to me. I’d not fitted a TT31 before, but I found it very impressive – it has a high quality bezel and bright display. The install was simple, in conjunction with a Garmin 430W. I’ve kept in contact with the customer having installed the TT31, he’s delighted, as he’s reporting way more traffic than was previously visible on his GDL-39! The Trig unit also meant I could hook up TIS-A traffic, which is now displayed on his 430W.”

The TT31 is the ideal retro-fit for the popular KT76A and KT78A, minimising installation time and expense. Tom MacArthur is delighted to discover that Trig provides such a practical ADS-B Out solution. He said, “There’s a whole lot of airplanes equipped with KT76A and KT78A transponders and many of these have 430W units too – the TT31 makes the most sense for these guys.”

Details of the AML list and Approved Trig Dealers who can provide the best route to ADS-B compliance can be found at