What Would You Do (4)
I was flying a C172M home that belonged to a friend that had gotten stuck at an airport 100 miles away with a bad mag. Since it was going to take 3 days to get it fixed he left it at the shop and took the bus home. He asked if I could go get the airplane when it was ready. Since I could hop a ride with a friend on a scheduled freight run to the airport where the airplane was this was an easy favour to help out a fellow pilot.
I was in cruise in VFR in controlled airspace and ATC called me and informed me they were no longer receiving a transponder return
What would you do ?