Casualties unknown

Landing Accident Following Failure to Disengage Yaw Damper (N35SR)

Humacao, PR, US

On March 13, 2003, a Beech V35B (registration N35SR) was involved in an aviation accident near Humacao, PR. Investigators recorded the probable cause as: The pilot's failure to disengage the yaw damper before landing, which resulted in a locked rudder and loss of directional control. 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 2026-06-10Data APIEditorial standards

A pilot reported that during landing on runway 10, the airplane veered left after touchdown, impacted a ditch. The pilot realized he had not disengaged the yaw damper, causing a locked rudder.

Accident Sequence

The pilot reported landing on runway 10. During the rollout, the airplane veered to the left and impacted a ditch. The pilot stated that on the downwind leg, he completed a landing check and believed the yaw damper was "disengaged," but did not physically verify its status. Just before touchdown, he felt lateral directional movement, and the nose "kicked left a few degrees." He attempted to steer the airplane back to the center of the runway, but the rudder was "locked." He then realized he had not disengaged the yaw damper, and his attempts to correct the airplane's directional control were unsuccessful. The airplane departed the left side of the runway, traveled through tall weeds, and "dropped into a ditch." The pilot added that he had landed with a crosswind from the left.

Probable cause

The pilot's failure to disengage the yaw damper before landing, which resulted in a locked rudder and loss of directional control.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20030317X00352. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.