What happened
While enroute, an instrument-rated pilot requested a GPS instrument approach to the intended destination airport. Air traffic control denied this request, citing heavy traffic and low cloud bases in the area. In response, the pilot requested IFR clearance to an alternate airport, which was granted via an ILS approach.
The pilot subsequently notified air traffic control of the intention to cancel the IFR clearance and proceed to the original destination airport under VFR when conditions permitted. Witnesses observed the aircraft flying northbound toward the intended destination. Observers noted the aircraft was flying low and fast with its landing gear retracted. At the time, weather conditions were reported as very rainy and foggy with poor visibility. The aircraft continued north until it disappeared into the fog and clouds. No distress calls were received from the pilot prior to the accident.
The aircraft impacted trees and terrain at an elevation of approximately 5,675 feet MSL. The pilot, who had 3,864 hours of flight time and was familiar with the route, was among the fatalities.
The investigation
An examination of the wreckage revealed no aircraft or engine anomalies that would have prevented normal operations.