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NTSB Report
February 14, 1989 · Cessna 340A · N5454X
Jacksonville, FL
Overview
Report Status
Probable Cause
Event Type
Accident
Date
February 14, 1989
Injury Outcomes
No injuries (2 uninjured)
Location
Jacksonville, FL
Aircraft
Cessna 340A
Tail Number
N5454X
Injuries
None
Aircraft Damage
Substantial
NTSB Number
MIA89LA085
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.
NTSB Probable Cause
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.
Full Narrative
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.
Flight
Event TypeAccident
Event Time12:09 EST
Nearest AirportCraig Field (0nm N)
Runway22
Runway Length4001 ft
Runway Width100 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna 340A
Tail NumberN5454X
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines2
Engine TypeReciprocating
Engine DetailsContinental · TSIO-520-NB · Reciprocating · 310
Seats6
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 46 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind190° @ 5 kt
Visibility7 sm
CeilingNone
Temperature / Dew Point63 F
Altimeter30.00 inHg
Observation Time17:00
Weather SourceWFAC