I have an intermittent flap problem, flaps selected to 50% and no movement cb pulled for landing then servicable after landing, flaps selected to 100% stopped at 56%, flaps retratced stopped at 80%, flaps selected to 100% did not move found servicable after landing, flap motor replaced, control switch replaced, selector control valve replaced, flow restrictor valve replaced, rigged several times.
Any suggestions would be appreciated.