The MY17, Founder’s Edition, and some Limited Edition A5 aircraft are equipped with a Trig TY91 VHF comm radio, a Trig TT22 Mode S transponder, and an ACK E-04 406 MHz emergency locator transmitter (ELT).

The VHF radio, supplied by Trig Avionics, allows two-way communication and the monitoring of two frequencies at the same time. The TY91 VHF remote transceiver is installed remotely inside the left-hand side of the nose of the aircraft and is controlled through a TC90 controller unit, located in the center stack console, and the push-to-talk buttons on both the pilot and passenger control sticks. The antenna with VHF radio is located on top of the horizontal tail of the aircraft. For more details on operating the TY91 and TC90, see Trig Avionics Limited Publication 00839-00-AF (TY91 and TY92 VHF Radio Installation Manual).

The TT22, also supplied by Trig Avionics, is a remote mounted Mode S transponder, installed inside the left side of the nose of the aircraft next to the VHF radio, and is controlled through a TC20 controller unit, located in the center stack console. The antenna for the transponder is located on top of the engine cowling. For more details on operating the TT22 and TC20, see Trig Avionics Limited Publication 00559-00-AF (TT22 Mode S Transponder Operating Manual).

The ELT, supplied by ACK Technologies, is installed below the center console and sends out a distress signal when manually or automatically activated. The ELT can be manually activated through the remote control located on the left-hand side of the overhead console. The antenna for ELT is located on the engine cowling aft of the transponder antenna.