Casualties unknown

1985-08-09: Piper PA-20 (N7765K) — Seattle, WA

Seattle, WA, US

On August 9, 1985, a Piper PA-20 (registration N7765K) was involved in an aviation accident near Seattle, WA. Investigators recorded the probable cause as: The pilot's failure to maintain directional control during ground operations due to a failed steering spring and gusts of wind. 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 experienced a ground loop due to a failed steering spring that had been temporarily repaired away from a repair station, with gusty wind contributing to the incident.

What happened

The aircraft experienced a ground loop during ground operations. During this event, the nosewheel steering spring failed. Evidence indicated that this steering component had already failed prior to the accident sequence while the aircraft was away from a repair station.

To address the mechanical issue, the pilot performed a temporary repair on the steering system. However, this makeshift fix proved insufficient and failed during the subsequent ground loop. The pilot later attributed the accident to a combination of the broken steering spring and gusts of wind affecting the aircraft's directional control.

The investigation

Investigation into the mechanical failure confirmed that the steering spring had indeed failed prior to the accident. The temporary repair attempted by the pilot was identified as having failed during the ground loop event, leading to loss of control.

Findings

The primary factors contributing to the accident were the failure of the nosewheel steering spring and the gusty wind conditions. The inability to maintain directional control resulted in a ground loop. No injuries were reported.

Probable cause

The pilot's failure to maintain directional control during ground operations due to a failed steering spring and gusts of wind.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001214X37645. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.