Casualties unknown

1997-08-24: Cessna 170A (N9540A) — Iliamna, AK

Iliamna, AK, US

On August 24, 1997, a Cessna 170A (registration N9540A) was involved in an aviation accident near Iliamna, AK. Investigators recorded the probable cause as: 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. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 1781061362Data APIEditorial standards

A pilot departing a remote airport in a tailwheel airplane reported the aircraft veered left during takeoff in gusty winds. The right main landing gear collapsed and the right wing struck the ground.

Accident Overview

A pilot flying a tail-wheel equipped airplane experienced a loss of directional control during takeoff from a remote airport. The aircraft veered off the left side of the runway, resulting in the collapse of the right main landing gear and the right wing contacting the ground.

Pilot Report

The pilot reported that before departure, the wind was from the left quarter at about 25 knots, approximately 25 degrees left of the runway heading. During the takeoff roll, the pilot kept the airplane on the ground for about 1,100 feet, reaching an airspeed of 70 MPH. At that point, the airplane suddenly veered to the left and departed the runway surface.

Weather Conditions

After the accident, the pilot noted that the wind was blowing from the north at an estimated 25 knots. The Facility Directory for the airport included a caution for strong winds, severe turbulence, and possible wind shear.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001208X08539. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.