On February 4, 2001, a Learjet 25B (registration N48WA) was involved in an aviation accident near Ft. Pierce, FL. Investigators recorded the probable cause as: Improper installation and securing of the left main landing gear trunnion pin. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
A pilot experienced a landing gear retraction problem during takeoff. After landing, the left main landing gear separated, causing loss of directional control and a runway excursion.
Incident Overview
During takeoff, the pilot encountered a landing gear retraction problem. The aircraft continued the flight and subsequently landed. Shortly after touchdown, the left main landing gear broke away from the airframe. Directional control was lost, and the airplane skidded off the left side of the runway.
Maintenance Findings
Examination of the aircraft maintenance records revealed that the landing gear assembly had been removed and reinstalled during a recent maintenance procedure. Further examination disclosed that the left main landing gear trunnion pin was improperly installed and secured in accordance with the Learjet maintenance manual.
Probable cause
Improper installation and securing of the left main landing gear trunnion pin.