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NTSB Report
December 13, 1982 · Beech B200 · N6338T
Chesterfield, MO
Overview
Report Status
Preliminary report
Event Type
Incident
Date
December 13, 1982
Injury Outcomes
No injuries (4 uninjured)
Location
Chesterfield, MO
Aircraft
Beech B200
Tail Number
N6338T
Operator
La Barge
Injuries
None
Aircraft Damage
Minor
NTSB Number
MKC83IA036
UPON ARRIVAL OVER CHICAGO, IL, THE CREW DISCOVERED THAT THE LANDING GEAR WOULD NOT EXTEND. AFTER NUMEROUS UNSUCCESSFUL ATTEMPTS TO LOWER THE GEAR, THE CREW ELECTED TO RETURN TO THEIR HOME BASE AIRPORT AND MAKE A GEAR UP LANDING. THE LANDING WAS SUCCESSFUL AND THERE WERE NO INJURIES. INVESTIGATION REVEALED THAT A LOCKING NUT HAD BACKED OFF A TAPERED PIN AT THE INBOARD UNIVERSAL JOINT IN THE LEFT MAIN GEAR EXTENSION/RETRACTION TORQUE TUBE. THIS ALLOWED THE TAPERED PIN TO BACK OUT, DISCONNECTING THE TORQUE TUBE FROM THE GEAR DRIVE MOTOR. NO EVIDENCE OF FACTORY TORQUE STRIPPING WAS FOUND ON THE NUT.
Full Narrative
UPON ARRIVAL OVER CHICAGO, IL, THE CREW DISCOVERED THAT THE LANDING GEAR WOULD NOT EXTEND. AFTER NUMEROUS UNSUCCESSFUL ATTEMPTS TO LOWER THE GEAR, THE CREW ELECTED TO RETURN TO THEIR HOME BASE AIRPORT AND MAKE A GEAR UP LANDING. THE LANDING WAS SUCCESSFUL AND THERE WERE NO INJURIES. INVESTIGATION REVEALED THAT A LOCKING NUT HAD BACKED OFF A TAPERED PIN AT THE INBOARD UNIVERSAL JOINT IN THE LEFT MAIN GEAR EXTENSION/RETRACTION TORQUE TUBE. THIS ALLOWED THE TAPERED PIN TO BACK OUT, DISCONNECTING THE TORQUE TUBE FROM THE GEAR DRIVE MOTOR. NO EVIDENCE OF FACTORY TORQUE STRIPPING WAS FOUND ON THE NUT.
Flight
Event TypeIncident
Event Time12:22 CST
Nearest AirportSpirit Of St. Louis (0nm N)
Runway25
Runway Length6008 ft
Runway Width150 ft
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBeech B200
Tail NumberN6338T
Aircraft CategoryAir
DamageMinor
OperatorLa Barge
Operating RulePart 91
Engines2
Engine TypeTurboprop
Engine DetailsP & W · PT6A42 · Turboprop · 850
Seats15
People & Injuries
Injury SummaryNo injuries (4 uninjured)
Fatal0
Serious0
Minor0
Uninjured4
Total4
Crew 1Age 33 · First Class
Conditions
ConditionsVMC
LightDaylight
Wind190° @ 13 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point10 C / 0 C
Altimeter30.00 inHg
Observation Time12:28