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NTSB Report
February 12, 1993 · Boeing A75N1 · N62733
Hughson, CA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
February 12, 1993
Injury Outcomes
No injuries (1 uninjured)
Location
Hughson, CA
Aircraft
Boeing A75N1
Tail Number
N62733
Operator
Grauf Flying Service
Injuries
None
Aircraft Damage
Substantial
NTSB Number
LAX93LA117
SHORTLY AFTER DEPARTING A PRIVATELY OWNED AIRSTRIP THE AIRPLANE EXPERIENCED A ROUGH RUNNING ENGINE FOLLOWED BY A LOSS OF POWER. THE PILOT EXECUTED A LANDING IN A CULTIVATED OPEN FIELD. THE AIRPLANE NOSED OVER WHEN THE MAIN WHEELS DUG INTO THE SOFT TERRAIN. EXAMINATION OF THE ENGINE DISCLOSED THAT AN INTAKE VALVE FRACTURED.
NTSB Probable Cause
THE FAILURE OF THE INTAKE VALVE. THE SOFT TERRAIN CONTRIBUTED TO THIS ACCIDENT.
Full Narrative
SHORTLY AFTER DEPARTING A PRIVATELY OWNED AIRSTRIP THE AIRPLANE EXPERIENCED A ROUGH RUNNING ENGINE FOLLOWED BY A LOSS OF POWER. THE PILOT EXECUTED A LANDING IN A CULTIVATED OPEN FIELD. THE AIRPLANE NOSED OVER WHEN THE MAIN WHEELS DUG INTO THE SOFT TERRAIN. EXAMINATION OF THE ENGINE DISCLOSED THAT AN INTAKE VALVE FRACTURED.
Flight
Event TypeAccident
Event Time13:28 PST
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBoeing A75N1
Tail NumberN62733
Aircraft CategoryAir
DamageSubstantial
OperatorGrauf Flying Service
Operating RulePart 137
Engines1
Engine TypeReciprocating
Engine DetailsWright · R-975-11 · Reciprocating · 440
Seats1
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 44 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind315° @ 5 kt
Visibility15 sm
CeilingNone
Temperature / Dew Point55 / 0 C
Altimeter0
Weather SourcePILO