What happened
The incident occurred while the aircraft was en route to its destination. Approximately 10 miles from the airport, the cabin door unexpectedly popped open. The pilot reported that the sudden event caused a significant distraction. While attempting to maintain control during the final approach phase, the pilot lost airspeed due to this distraction.
The aircraft touched down hard just short of the runway threshold. As a result of the impact, the aircraft sustained substantial damage. The pilot noted that the wind conditions at the time were from 180 degrees at 10 knots, gusting to 15 knots.
The investigation
The investigation focused on the mechanical failure of the cabin door and the subsequent handling of the aircraft by the pilot. Examination confirmed that the door opened in flight, which directly contributed to the pilot's distraction. The hard landing was determined to be a direct consequence of the loss of airspeed caused by this distraction.
Findings
The primary factor in this accident was the cabin door opening during flight. This event led to pilot distraction, which resulted in a loss of airspeed on final approach. The hard landing and subsequent substantial damage were direct outcomes of these factors. The weather conditions, while present, were not cited as a primary cause of the accident sequence.