Accident Overview
Following the completion of scheduled maintenance and a normal ground run-up, the airplane departed from the airport for a local test flight. The flight was intended to verify the aircraft's performance after the maintenance work.
Witness Observations
Witnesses on the ground observed the airplane in a nose-high attitude shortly after departure. It then executed a turn to the left. Approximately 1.5 miles from the departure end of the runway, witnesses saw the nose of the airplane drop toward the ground. The airplane subsequently impacted hilly terrain and was consumed by a post-impact fire.
Investigation Findings
A detailed examination of the airframe, engines, and propellers was conducted. Investigators found no defects or anomalies that would have contributed to the accident. All systems appeared to have been functioning normally prior to impact.
Probable Cause
The official probable cause of the accident was determined to be the pilot's failure to maintain control of the airplane after takeoff.