NTSB Identification: MIA07IA080.
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Incident occurred Saturday, March 31, 2007 in Key West, FL
Probable Cause Approval Date: 06/30/2008
Aircraft: Beech E-55, registration: N25612
Injuries: 2 Uninjured.
NTSB investigators used data provided by various sources and may not have traveled in support of this investigation to prepare this aircraft incident report.
The pilot stated that when he extended the landing gear on final approach he received a green gear down light. During landing rollout the nose landing gear collapsed. Examination of the airplane after the incident by a Federal Aviation Administration (FAA) inspectors showed the nose landing gear torque link had failed, causing the nose landing gear to collapse. Metallurgical examination of the nose landing gear drag brace was performed at the National Transportation Safety Board Materials Laboratory. The examination showed the drag brace had fractured in the tubing; at a point just forward of the right attach point. The fracture faces displayed surfaces that were inclined at approximately 45-degrees to the axis of the separated portion of the tubing, consistent with an overload event. The incident airplane was manufactured in January 1973. A representative from Hawker-Beechcraft stated that beginning in model year 1978, an improved nose landing gear drag brace was incorporated into new production airplanes. Beech also issued service kit 35-4012-1 S, which allowed for upgrade of earlier model E-55 airplanes with the improved nose landing gear drag brace. The representative stated that pictures of the failed drag brace from the accident airplane shows it was not the improved drag brace. Maintenance personnel for the incident airplane owner stated that a review of airplane logbook records show no evidence that the drag brace had been changed in the life of the airplane and that the failed drag brace appeared to be the original supplied with the airplane from the factory.
The National Transportation Safety Board determines the probable cause(s) of this incident to be: Failure of the nose landing gear drag brace due to overload during landing rollout for undetermined reasons. Contributing to the accident was the airplane had not been modified with an improved nose landing gear drag brace. Full narrative available
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