listing placed 09 January 2026 United Kingdom

TRIG TT31 mode S Transponder + wiring & mounting tray £1495

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Trig TT31 Mode S stack transponder now reduced to £1495. Must sell.
Removed from my exported Touring Motor Glider (see picture of instrument panel). Excellent condition. EASA Form 1's. The unit comes ready to go with a wiring harness, a mounting tray and an ACK A-30 altitude encoder.

Easy slide-in Replacement for King KT76A or KT76C transponders. ADS-B Capability.
Free UK mainland secure postage.

See the spec for the TT31 here on this link: https://www.gps.co.uk/product/trig-tt31-mode-s-transponder-complete/

See the spec for the ACK encoder here: https://www.gps.co.uk/product/ack-a30-mod-9/

Any questions (non technical) please msg me.