JACKSONVILLE, FL, USA
N5454X
CESSNA 340A
THE PILOT EXPERIENCED A COLLAPSE OF THE RIGHT MAIN LANDING GEAR DURING TAXI. THE INVESTIGATION REVEALED THAT THE COLLAPSE WAS DUE TO THE SEIZURE OF THE UPPER DOWNLOCK TOP BUSHING. IT ALLOWED THE MAIN LANDING GEAR TO BE RIGGED IMPROPERLY AND NOT BE FULLY DOWN AND LOCKED WHEN THE GEAR DOWN LIGHT WAS ILLUMINATED. THE MECHANIC STATED THAT THE EXPANDED INSPECTION PROCEDURES SPECITY THAT THE LANDING GEAR BUSHING MUST BE FREE.
SEIZURE OF THE RIGHT MAIN LANDING GEAR UPPER DOWNLOCK TOP BUSHING, AND THE FAILURE OF OTHER MAINTENANCE PERSONNEL TO PROPERLY RIG THE LANDING GEAR DOWN LIGHT MICRO SWITCHES.
Source: NTSB Aviation Accident Database
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