The commercial pilot was conducting a local skydiving flight with four skydivers. After the airplane
climbed to 3,800 ft, one of the skydivers deployed, and at 11,000 ft, the remaining three skydivers
deployed. The pilot stated that the procedure for deploying skydivers was to input 10° of flaps before the
skydivers’ deployment. After the last skydiver exited the airplane, the pilot closed the door and started to
retract the flaps from 10° to 0°. The pilot heard a “metallic” snap, and the airplane went into a spin. The
pilot recovered the airplane from the spin about 7,000 ft. He discovered that the right flap was partially
deployed about 5° down and appeared to be crooked in its track. In addition, he noted a vibration from
the right flap with restricted aileron control. The pilot stated that lateral control was difficult to maintain.
After a radio conference with a mechanic and about 30 minutes of trying to control the airplane, the pilot
chose to bail out of the airplane; he maneuvered the airplane over unpopulated farmland, shut down the
engine, and parachuted. The pilot watched the airplane circle after his parachute deployed. The pilot
landed and did not sustain injuries; the airplane impacted terrain and sustained substantial damage.
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