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NTSB Report
June 6, 1991 · Cessna 310L · N3337X
Fort Wayne, IN
Overview
Report Status
Probable Cause
Event Type
Accident
Date
June 6, 1991
Injury Outcomes
No injuries (2 uninjured)
Location
Fort Wayne, IN
Aircraft
Cessna 310L
Tail Number
N3337X
Operator
Edward C Hartung
Injuries
None
Aircraft Damage
Substantial
NTSB Number
CHI91LA182
THE RIGHT MAIN REMAINED RETRACTED WHEN THE GEAR WERE SELECTED DOWN, AND THE PILOT LANDED ON TWO WHEELS. EXAMINATION OF THE HUNG GEAR SHOWED AN EXTERNAL LOCK RING ON THE STRUT PISTON ASSEMBLY HAD UNSEATED, ALLOWING THE STRUT TO OVEREXTEND AND JAM IN ITS WELL. THE INNER BEARING WHICH MOUNTS NEXT TO THE LOCK RING GROOVE WAS INSTALLED BACKWARDS. THE OPPOSITE LANDING GEAR HAD THE SAME INVERSE INSTALLATION. BOTH INNER BEARINGS WERE NEW PARTS INSTALLED DURING ACCOMPLISHMENT OF AN AIRWORTHINESS DIRECTIVE 5 DAYS BEFORE THE ACCIDENT. THE MANUFACTURER'S SERVICE MANUAL PROVIDES INSTRUCTIONS FOR THE CORRECT ORIENTATION OF THE INNER BEARINGS.
NTSB Probable Cause
THE IMPROPER INSTALLATION OF A BEARING BY MAINTENANCE PERSONNEL.
Full Narrative
THE RIGHT MAIN REMAINED RETRACTED WHEN THE GEAR WERE SELECTED DOWN, AND THE PILOT LANDED ON TWO WHEELS. EXAMINATION OF THE HUNG GEAR SHOWED AN EXTERNAL LOCK RING ON THE STRUT PISTON ASSEMBLY HAD UNSEATED, ALLOWING THE STRUT TO OVEREXTEND AND JAM IN ITS WELL. THE INNER BEARING WHICH MOUNTS NEXT TO THE LOCK RING GROOVE WAS INSTALLED BACKWARDS. THE OPPOSITE LANDING GEAR HAD THE SAME INVERSE INSTALLATION. BOTH INNER BEARINGS WERE NEW PARTS INSTALLED DURING ACCOMPLISHMENT OF AN AIRWORTHINESS DIRECTIVE 5 DAYS BEFORE THE ACCIDENT. THE MANUFACTURER'S SERVICE MANUAL PROVIDES INSTRUCTIONS FOR THE CORRECT ORIENTATION OF THE INNER BEARINGS.
Flight
Event TypeAccident
Event Time18:52 EDT
Nearest AirportFort Wayne Muni (0nm N)
Runway5
Runway Length12000 ft
Runway Width150 ft
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna 310L
Tail NumberN3337X
Aircraft CategoryAir
DamageSubstantial
OperatorEdward C Hartung
Operating RulePart 91
Engines2
Engine TypeReciprocating
Engine DetailsContinental · IO-470-V · Reciprocating · 260
Seats6
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 42 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind70° @ 6 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point45 C
Altimeter30.00 inHg
Observation Time22:50
Weather SourceWFAC