NTSB Probable Cause

THE PILOT'S FAILURE TO MAINTAIN AIRSPEED WHILE PERFORMING LOW ALTITUDE AEROBATIC MANEUVERS, RESULTING IN A STALL WITH INSUFFICIENT ALTITUDE TO RECOVER. FACTORS RELATED TO THE ACCIDENT WERE THE PILOT'S OVERCONFIDENCE IN HIS ABILITY TO PERFORM THESE MANEUVERS, AND HIS LACK OF EXPERIENCE IN FIXED WING AIRPLANES.