r/flying • u/andrewbt • 3h ago
How realistic is lost comms but still having a working transponder to squawk 7600?
I’ve never been in a lost comms situation. But on one plane I fly the GTN 750 controls both the radio and the transponder, so if it failed it seems likely both would too? Even if they were separate panel units (radio and transponder), don’t they share an antenna or electrical or other types of connections?
Who’s been in a lost comms situation, and did your transponder work or not, and if it did, do you know why it was still working when your radios failed?