Accident Overview
Following departure from Whitefield-Mt Washington Airport, the pilot encountered adverse weather conditions characterized by thunderstorm activity, turbulence, and fog. While cruising at an altitude of 9,000 feet under an instrument flight rules (IFR) flight plan, the pilot made the decision to cancel the IFR clearance. Shortly thereafter, the aircraft entered an uncontrolled descent and collided with Mount Bond, situated approximately 15 miles south of Whitefield. The impact occurred at an elevation of 4,698 feet.
Wreckage and Occupants
The wreckage was discovered later at the crash site. Both individuals on board—the pilot and a passenger—were killed in the accident.
Probable Cause
The official probable cause of the accident was determined to be an uncontrolled descent resulting from improper in-flight decisions by the pilot. The investigation also reported contributing factors: thunderstorm activity, turbulence associated with clouds and thunderstorms, high obstructions, fog, the pilot's decision to depart under IFR but cancel the flight plan at 9,000 feet, and the aircraft's impact with a mountain slope at 4,698 feet elevation.