Accident Details
While flying at low altitude, a single-engine airplane struck treetops and crashed in a wooded area in Lewis, New York. The pilot, who was the sole occupant, was killed. The wreckage was discovered two days after the accident.
Contributing Circumstances
Patches of fog were present in the area at the time of the flight. Witnesses reported seeing the aircraft at treetop level prior to the impact with a mountain upslope.
Investigation Findings
The official investigation determined the probable cause to be improper Instrument Flight Rules (IFR) operation by the pilot, who made improper in-flight decisions. Factors reported include unwarranted low flying, the presence of fog patches, and the aircraft being observed at treetop level before colliding with the rising terrain.