NTSB Identification: ANC97LA130.
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Accident occurred Saturday, August 23, 1997 in ILIAMNA, AK
Probable Cause Approval Date: 07/13/1998
Aircraft: Cessna 170A, registration: N9540A
Injuries: 2 Uninjured.
NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.
The pilot was departing to the west from a remote airport in a tail-wheel equipped airplane. He reported that initially, there was a left quartering wind (about 25 degrees left of the runway heading) at about 25 knots. During the takeoff roll, the pilot held the airplane on the ground for about 1,100 feet and attained an airspeed of 70 MPH. He indicated the airplane suddenly veered off the left side of the runway. The right main landing gear collapsed, and the right wing struck the ground. After the accident, the pilot noticed the wind was blowing from the north at an estimated velocity of 25 knots. The Facility Directory for the airport included a caution for strong winds, severe turbulence, and possible wind shear.
The National Transportation Safety Board determines the probable cause(s) of this accident to be: the pilot's inadequate compensation for wind conditions, and his failure to maintain directional control of the airplane, which resulted in a ground swerve and overload failure of the right main landing gear. Factors related to the accident were: the crosswind, and sudden windshift. Full narrative available
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