On November 7, 1997, a Fokker F100 (registration N865US) was involved in an aviation accident near Charlotte, NC. Investigators recorded the probable cause as: Improper written instructions (job/task card) by company maintenance personnel. The procedures did not reflect the correct manufactures maintenance manual servicing procedure, and did not ensure that the proper tool (replenishing gun) was available for the… This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
A Fokker F100's right main landing gear collapsed during landing rollout. Investigation revealed improper maintenance procedures and lack of required tools when servicing the torque link damper.
Incident Overview
A Fokker F100 experienced a collapse of the right main landing gear during the landing rollout. The aircraft was on the runway when the gear failed.
Maintenance Findings
Review of company maintenance records showed that the torque link damper on the right main landing gear had been serviced using a company maintenance task/job card. The procedures employed did not align with those specified in the aircraft manufacturer's maintenance manual. Additionally, the required tool for servicing the torque link damper assembly, a replenishing gun, was not available.
NTSB Materials Laboratory Examination
The failed components were examined by the NTSB Materials Laboratory Division. Fractures originating from the main fitting displayed a chevron pattern indicative of overstress. These fractures began at the base of the upper torque link attach lug. No preexisting cracks were detected in the examined components.
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