Accident Sequence from Video Recording
A video recording of the accident showed the airplane wavering during climb out in a nose-high attitude. It began a turn to the left, reaching an approximate altitude of 100 feet before the turn increased to about 60 degrees. The airplane then pitched nose down, entered a sharp roll to the left, and impacted the ground.
Propeller RPM Analysis
The National Transportation Safety Board's Vehicle Recorder Division Audio Laboratory conducted a sound spectrum study on the video recording. The analysis revealed that the fixed pitch propeller was spinning at approximately 2,340 revolutions per minute.
Wreckage Examination Findings
During examination of the wreckage, it was discovered that the flaps were deployed at 10 degrees. Additionally, the airplane was about 64 pounds over the gross weight limit.
Pilot's Weight Calculation
The pilot's miscalculation of the gross weight limit would have resulted in a higher stall speed.