Accident Overview
An aircraft on takeoff from a private airstrip became airborne during the roll, but subsequently descended and touched down past the departure end of the runway. The airstrip measured 2,250 feet in length and had a dirt surface. The takeoff direction was east.
Environmental Conditions
The wind at the time of the accident was from 290 degrees at 10 knots, with gusts to 17 knots. The calculated density altitude was 7,700 feet.
Aircraft Performance Considerations
The aircraft was within 70 pounds of its maximum certificated gross weight. Performance data for the aircraft included a takeoff chart that stipulated an upper limit of 7,000 feet density altitude and assumed a hard surface runway, no wind, and maximum gross weight. Under those conditions, the predicted takeoff roll was 1,750 feet. The chart also noted that extending the curves above the 7,000-foot limit was not permissible. The actual density altitude of 7,700 feet exceeded that limit.
Pilot Statement
The pilot stated that he believed he encountered a wind shear during the rotation phase of the takeoff.