What happened
The aircraft was destroyed when it impacted the ground in an uncontrolled attitude at high speed. The private pilot, who did not hold an instrument rating, had filed an IFR flight plan and departed into marginal visual conditions with visibility of five miles and ceiling below 800 feet. Weather tops were reported above 8,000 feet.
Approximately 20 minutes after departure, the pilot contacted air traffic control to report experiencing instrument problems. Shortly thereafter, the pilot became totally disoriented and entered an uncontrolled descent.
The investigation
An investigation was conducted to determine the cause of the accident. The inquiry did not reveal any mechanical failure or malfunction on the aircraft, engine, or instrument systems. This finding indicates that the loss of control was not due to equipment failure.
Findings
Analysis of air traffic control transcripts indicated that the pilot was unfamiliar with IFR procedures and techniques. The pilot appeared confused about the clearance and how to execute it. Additionally, the pilot's last IFR instruction had been almost two years prior to the accident. These factors contributed to the pilot becoming disoriented and losing control of the aircraft.