Approach and Collision
An aircraft was conducting a VOR instrument approach to an airport when it struck terrain located approximately 6 miles south of the airport and about 2 miles north of the VOR/final approach fix (FAF). The terrain at the collision site was approximately 250 feet high.
Shortly before the accident, the pilot communicated with air traffic control, reporting that the aircraft was experiencing turbulence. In a subsequent transmission, the pilot stated that the turbulence had stopped.
Investigation Findings
Examination of the aircraft after the accident revealed no evidence of mechanical failure or malfunction. The airframe, engine, and systems were inspected, and no pre-impact anomalies were found.
Pathological tests conducted on the pilot yielded negative results.
Flight tests were performed on navigational aids (NAVAIDs) relevant to the approach. The tests indicated that the equipment was operating satisfactorily.
No determination of cause or contributing factors was provided by the investigation.