Accident Summary
Shortly after takeoff from a field located in Lake Grassmere, while completing the eighth sortie of the morning, the pilot lost control of the airplane. The aircraft subsequently crashed on hilly terrain. The impact destroyed the aircraft, and the pilot was killed.
Investigation Findings
Investigators determined that the pilot became incapacitated during the flight. The incapacitation was described as an unusual event that could not have been predicted or prevented by any reasonable or effective medical screening process. No other factors were identified as contributing to the loss of control.
Probable Cause
The official probable cause of the accident was pilot incapacitation.