Spent 9 hours chasing a glideslope flag that turned out to be a $4 connector pin
Everyone kept saying swap the receiver, so we did, twice, and the flag came back on the next ramp check at KMDW. Finally ohm checked every pin in the tray and found one pushed back just enough to read fine cold and open up with heat. What's your go-to for catching a pin that only fails after everything's been running for an hour?