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NTSB Report
September 21, 1990 · Cessna 152 · N46326
Hayward, CA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
September 21, 1990
Injury Outcomes
1 injury (1 minor injury)
Location
Hayward, CA
Aircraft
Cessna 152
Tail Number
N46326
Operator
Steve M Econome
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
LAX90LA328
THE PILOT MADE TWO LANDINGS, AND DURING THE SECOND LANDING THE AIRPLANE'S MAIN LANDING GEAR FAILED. THE PILOT LOST CONTROL OF HIS AIRPLANE. IT VEERED OFF THE RUNWAY AND GROUND LOOPED. THE AIRPLANE HAD BEEN MODIFIED BY THE INSTALLATION OF CONVENTIONAL LEAF SPRING MAIN GEAR AND A TAIL WHEEL ASSEMBLY. A MAIN GEAR ATTACHMENT BOLT WAS FOUND PARTIALLY STRIPPED FROM ITS RESPECTIVE NUT PLATE ASSEMBLY. ONLY ABOUT FOUR OF THE THREADS AT THE BOLT'S END WERE OBSERVED STRIPPED, AND ONLY A PORTION OF THE THREADS IN THE NUT PLATE WERE OBSERVED STRIPPED. DURING THE LANDING, THE IMPROPERLY SECURED BOLT PULLED OUT OF THE NUT PLATE.
NTSB Probable Cause
THE FAILURE OF THE AIRPLANE'S MAIN LANDING GEAR BOLT/NUT PLATE ATTACHMENT ASSEMBLY. CONTRIBUTING FACTORS RELATED TO THE IMPROPER INSTALLATION (THREADING) OF THE GEAR BOLT/NUT ASSEMBLY.
Full Narrative
THE PILOT MADE TWO LANDINGS, AND DURING THE SECOND LANDING THE AIRPLANE'S MAIN LANDING GEAR FAILED. THE PILOT LOST CONTROL OF HIS AIRPLANE. IT VEERED OFF THE RUNWAY AND GROUND LOOPED. THE AIRPLANE HAD BEEN MODIFIED BY THE INSTALLATION OF CONVENTIONAL LEAF SPRING MAIN GEAR AND A TAIL WHEEL ASSEMBLY. A MAIN GEAR ATTACHMENT BOLT WAS FOUND PARTIALLY STRIPPED FROM ITS RESPECTIVE NUT PLATE ASSEMBLY. ONLY ABOUT FOUR OF THE THREADS AT THE BOLT'S END WERE OBSERVED STRIPPED, AND ONLY A PORTION OF THE THREADS IN THE NUT PLATE WERE OBSERVED STRIPPED. DURING THE LANDING, THE IMPROPERLY SECURED BOLT PULLED OUT OF THE NUT PLATE.
Flight
Event TypeAccident
Event Time10:46 PDT
Nearest AirportHaynard Air Terminal (0nm N)
Runway28L
Runway Length5024 ft
Runway Width150 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna 152
Tail NumberN46326
Aircraft CategoryAir
DamageSubstantial
OperatorSteve M Econome
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-235-L26 · Reciprocating · 112
Seats2
People & Injuries
Injury Summary1 injury (1 minor injury)
Fatal0
Serious0
Minor1
Uninjured0
Total1
Crew 1Age 68 · Third Class
Conditions
ConditionsVMC
LightDaylight
WindCalm
Visibility10 sm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter29.89 inHg
Observation Time17:46
Weather SourceWFAC