On July 6, 2004, a Beech 1900D (registration N87SK) was involved in an aviation accident near Milwaukee, WI. Investigators recorded the probable cause as: The fatigue fracture of the left main landing gear during landing roll. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 8 related events involving the same aircraft type or operator are linked below.
A scheduled domestic air carrier flight sustained minor damage when the left main landing gear rotated during landing rollout. Metallurgical examination found preexisting fatigue cracks at the base of the lug, and the lug radii were smaller than drawing specifications.
Event
A scheduled domestic air carrier flight experienced a landing gear anomaly during the landing rollout. The left main landing gear rotated, resulting in minor damage to the aircraft.
Investigation
A metallurgical examination was conducted on the failed landing gear component. The examination revealed that the landing gear had fractured at the base of the lug. This fracture location contained preexisting fatigue cracks.
Findings
The material composition and hardness of the landing gear were within specified limits. The only nonconformity identified during the investigation was that the lug radii were smaller than the dimensions specified in the engineering drawings.
What happened in the 6 Jul 2004 Beech 1900D accident near Milwaukee, WI?
A scheduled domestic air carrier flight sustained minor damage when the left main landing gear rotated during landing rollout. Metallurgical examination found preexisting fatigue cracks at the base of the lug, and the lug radii were smaller than drawing specifications.
What aircraft was involved and where did it happen?
The accident on 6 Jul 2004 involved a Beech 1900D, registration N87SK, at Milwaukee, WI.
What was the probable cause of the accident?
The fatigue fracture of the left main landing gear during landing roll.
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