NTSB Identification: SEA01LA160.
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Accident occurred Tuesday, August 28, 2001 in Battle Ground, WA
Probable Cause Approval Date: 05/28/2002
Aircraft: Shank Kitfox Model II, registration: N2136F
Injuries: 1 Serious.

NTSB investigators may have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

The accident aircraft was assembled for flight at the airport immediately before the accident flight. The pilot reported that following a normal takeoff and climbout, at approximately 150 feet above ground level and 50 MPH, he experienced a simultaneous reduction in airspeed and rate of climb. The airport owner reported that he watched the aircraft take off and get to an altitude about 200 to 250 feet above the runway when it began to flounder and mush as it drifted off to the right of the runway. The airport owner reported that the aircraft then settled into the trees and crashed. The airport owner stated that the aircraft took what he felt was an excessive take off roll, about 1,000 feet, and that the aircraft did not appear to have an excessive angle of attack as the aircraft climbed out. He also stated that the engine appeared to be operating normally and that he did not notice any power loss. The airport owner reported that the winds at the airport surface were calm when the accident happened. METAR weather observations at several nearby weather observation facilities near the time of the accident reported generally northerly to northwesterly or variable winds at 5 to 7 knots, with clear skies or few clouds and no significant temperature or pressure gradients across the area. According to performance specifications published by the aircraft kit manufacturer, a comparable model in the Kitfox line with power loading in the range of the accident aircraft has a takeoff roll of 250 feet, a climb rate of 1,200 to 1,450 feet per minute, and a stall speed of 37 MPH.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

The pilot's failure to maintain adequate airspeed during climbout.

Full narrative available

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