ALBUQUERQUE, NM, USA
N237AM
SWEARINGEN SA226TC
WHEN GEAR WAS LOWERED FOR LANDING RT MAIN GEAR WOULD NOT EXTEND ALTHOUGH PERSONS ON THE GROUND STATED THE GEAR DOORS APPEARED OPEN. REMEDIAL ACTION BY THE FLT CREW DID NOT RECTIFY THE SITUATION AND A GEAR UP LANDING WAS PERFORMED. WHEN ACFT WAS RAISED FROM RWY AND RT MAIN GEAR DOORS FORCED OPEN, A MECHANICS TOOL, CALLED AN AWL, FELL OUT OF WHEEL WELL. EXAMINATION OF MARKS ON THE AWL AND IN THE WHEEL WELL INDICATED THE AWL BECAME LODGED BTW THE KEELSON WEB AND THE DOOR HINGE. THIS WOULD HAVE BLOCKED THE DOORS FROM OPENING PAST THE HALF WAY POSITION THUS PREVENTING GEAR EXTENSION. A MECHANIC HAD PERFORMED A ROUTINE GEAR INSPECTION USING AN AWL TO ALIGN SOME SCREW HOLES ON THE EVENING PRECEEDING THE INCIDENT.
Source: NTSB Aviation Accident Database
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