"Yossarian" wrote in message . ..
I understand that functional fuel gauges are required equipment for day VFR
flight. Yesterday during my preflight in a 172 I saw that the right gauge
was functioning intermittently--it would show full, flicker down to zero,
bounce around, etc.

On the ground? Usually they don't start behaving that way until you are
in flight. Something is definitely wrong.

Would you fly this airplane?

Not if the FAA was watching.