What happened
The incident occurred immediately after the aircraft departed the ground. While in the climb phase of flight, the machine suddenly went out of control. The loss of stability was rapid and unrecoverable, leading to an immediate impact with the terrain. As a result of the crash, the pilot, who was the only person on board, was killed.
Findings
The available information indicates that the primary event was a sudden loss of control during the critical climb-out period. No specific mechanical failure or external factor is detailed in the source material beyond the immediate loss of controllability.