Pilot’s Failure To Secure The Airplane Before Hand-Propping The Engine Analysis: The airplane was parked on the ramp next to a hangar as the pilot attempted to start the engine with the help of two others. The engine was difficult to start, so the pilot exited the airplane and elected to hand prop the engine. Witnesses stated that the engine started suddenly and unexpectedly. The airplane turned right away from the hangar and taxied quickly.