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STC Program (FAA)

In the U.S. installing a compliant ADS-B Out solution (in a certified aircraft) requires your Trig transponder to utilise a certified WAAS GPS, this provides a compliant ADS-B position source. The FAA also requires that a certified ADS-B installation is completed in accordance with an FAA STC approval (Supplementary Type Certificate).

Our ADS-B STC’s are available free of charge and cover hundreds of aircraft types. Trig STC approvals allow the use of popular WAAS GPS navigators too – making installation more practical and cost-effective. Our TA70 GPS antenna has also been added to our STC equipment list.

The following WAAS GPS units are compatible and approved for use with our TT22 and TT31 transponders.

  • Garmin GTN 600W and 700W series
  • Garmin GNS 400W and 500W series
  • Trig TN70 WAAS GPS
  • FreeFlight 1201 WAAS GPS
  • Accord NexNav Mini WAAS GPS

STC Provision (via Peregrine)

Each of the following links will open the official FAA STC approval. You can check the applicable aircraft model list (AML) and GPS equipment within each STC. These are available free of charge to appropriately qualified Approved Trig Dealers from Peregrine (Trig’s STC partner) based in Denver www.peregrine.aero A PMA parts kit, with components necessary to achieve air-ground determination is available for  purchase from Peregrine.

TT31 Transponder

TT31 STC AML expansion

July 2015 – Added Garmin GTN 600W or 700W series GPS navigators – now included in this STC for the TT31.

TT31 STC AML expansion of SA00744D (H)

November 2014 – A further expansion to our STC SA00744DE. This STC AML allows the use of the TT31 in 650 aircraft types.

TT31 STC approval SA00744DE (H)

  • Cessna 172, 182 – TT31 with Garmin GNS 400W or 500W series, Trig TN70, FreeFlight 1201 or Accord NexNav Mini GPS.
  • Piper PA28 – TT31 with Garmin GNS 400W or 500W series, Trig TN70, FreeFlight 1201 or Accord NexNav Mini GPS.
  • Mooney – TT31 with Garmin GNS 400W or 500W series, Trig TN70, FreeFlight 1201 or Accord NexNav Mini GPS.

July 2014 – Aircraft models and GPS position sources detailed in our initial TT31 STC AML expansion.

TT22 Transponder

TT22 STC AML expansion

July 2015 – This STC AML allows use of the TT22 in 576 aircraft types – the TT22 can be used with Garmin GNS and GTN WAAS navigators, Trig TN70, FreeFlight 1201 or Accord NexNav Mini GPS

TT22 STC approval SA00756DE (H)

  • Pitts – TT22 with a FreeFlight 1201 GPS.

January 2013 – Aircraft models and GPS position sources are detailed on our initial  TT22 STC AML expansion.

TY96 Radio

TY96 STC AML expansion

April 2017 – Aircraft models are detailed on our TY96 STC.

TY96 approval SA01835WI

Further Information

Please bear in mind that STC requirements differ from country to country and reciprocal acceptance of FAA STC’s and EASA STC’s cannot be assumed. If you wish to gain more information about any of these specific STC approvals please contact support@trig-avionics.com

Customers in the U.S. should be aware that FAA, Federal Aviation Regulations (FAR) 91.227 requires that a compliant ADS-B Out solution uses a Class 1 transponder. The TT22 is a Class 1 device and meets this requirement. The TT21 is a Class 2 device and does not meet this regulation.