Ok, IMHO, inoperative flaps on a C-172 do not in any way render said
aircraft un-airworthy.
This airplane can be operated safely without flaps. I may limit myself to
runways longer than 800', but un-airworthy? They are not recommended for

Al,
I agree that inoperative flaps do not render certain aircraft
unairworthy. During my primary training, one day the C150 flaps
stopped to operate due to a weak battery. The chief instructor who
was also an AP and DE told me that I should go out and practice
landings without flaps. I had great fun that day practicing slipping
to see how short that I could land without 40 degrees flaps.

Hai Longworth