Incident Overview
A pilot reported that during takeoff, the passenger door opened while the aircraft was experiencing a crosswind condition with gusts up to 21 knots. The density altitude at the departure airport was 6,950 feet, and the runway had an uphill slope of 1.22 percent.
Pilot Account
The pilot stated that a tremendous gust caused the aircraft to crash approximately 600 feet beyond the departure end of the runway. Witnesses observed the aircraft take off with a nose-high attitude, settle back to the runway once or twice, and then disappear off the end of the runway.
Investigative Findings
An FAA inspector reported skid marks on the runway where the aircraft lifted off, indicating that the aircraft drifted to the left while yawing to the right. The inspector also noted that the landing gear was found extended and the air conditioner switch was in the 'on' position. According to the Airplane Flight Manual, the air conditioner must be turned off for takeoff.
Additional Details
The source provides no further information regarding aircraft type, registration, number of engines, date, operator, location, occupant count, injuries, or damage items. The time of day, weather characterization, and ATC involvement are also unspecified.