Primary finding
Probable cause
The total loss of engine power for undetermined reasons.
Investigator assessment
Analysis narrative
The pilot departed as number two of a three-airplane formation. On initial departure while joining the formation, the pilot felt an unusual vibration in the airframe. The pilot checked the engine instruments and determined that the oil temperature was high. After clearing the formation and turning the airplane back toward the airport, the engine stopped producing power. The airplane descended, was landed gear up in a clearing, and was substantially damaged during the landing. The cause of the high oil temperature could not be determined.
Source record
Factual narrative
The pilot departed as number two of a three airplane formation. On initial departure while joining the formation, the pilot felt an unusual vibration in the airframe. The pilot checked the engine instruments and determined that the oil temperature was high. After clearing the formation and turning the airplane back toward the airport, the engine stopped producing power. The airplane descended and was landed gear up in a cleared area, and was damaged during the landing. The cause of the high oil temperature could not be determined.