Piper Airplane Pilot Side Comm Corrosion. Solution found.

Q My Cherokee Six just came out of annual and the pilot-side radio communications are not working. I have a Garmin GMA 340 audio panel, Garmin GTN 750 GBS and comms, and KX-155 backup nav/coms. All are acting the same.

When I key the pilot mic, it appears to transmit (TX appears on radio) but only keying up carrier. Tower reports receiving only static. I plugged my headset into the co-pilot comms and it works perfectly. I’ve tried different headsets with the same result. I tightened connections where the headset plugs in on the pilot side — no difference. Any suggestions?

Ben Roper

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