So does the TCAS transmission also trigger a flash on mode A&C transponders?
Isn't TCAS passive....the radar signal from the SSR triggers your transponder, then nearby TCAS receives your reply..........? So assuming you're not being painted by any ground radar, then TCAS won't work....?? (dunno, just speculating?)
Standby is normal for the US as far as I'm aware.
Cheers
EA
