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NTSB Report
May 8, 1990 · Grumman G-164A · N5368
Gridley, CA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
May 8, 1990
Injury Outcomes
1 injury (1 serious injury)
Location
Gridley, CA
Aircraft
Grumman G-164A
Tail Number
N5368
Operator
Williams Ag Service
Injuries
Serious
Aircraft Damage
Substantial
NTSB Number
LAX90DVG07
THE PILOT EXPERIENCED A LOSS OF ENGINE POWER DURING AN AERIAL APPLICATION FLIGHT. THE AIRCRAFT STRUCK A DITCH WHILE ATTEMPTING TO LAND ON A ROAD AND NOSED OVER ONTO ITS BACK. EXAMINATION OF ENGINE REVEALED THAT THE NO.7 CYLINDER HAD CRACKED ACROSS THE TOP OF THE CYLINDER HEAD.
NTSB Probable Cause
FAILURE OF THE NO.7 CYLINDER HEAD WHICH LED TO A FORCED LANDING AND SUBSTANTIAL DAMAGE TO THE AIRCRAFT WHEN IT NOSED OVER AFTER COLLIDING WITH A DITCH.
Full Narrative
THE PILOT EXPERIENCED A LOSS OF ENGINE POWER DURING AN AERIAL APPLICATION FLIGHT. THE AIRCRAFT STRUCK A DITCH WHILE ATTEMPTING TO LAND ON A ROAD AND NOSED OVER ONTO ITS BACK. EXAMINATION OF ENGINE REVEALED THAT THE NO.7 CYLINDER HAD CRACKED ACROSS THE TOP OF THE CYLINDER HEAD.
Flight
Event TypeAccident
Event Time07:15 PDT
Nearest Airport0nm N
Runway0
Runway Length0
Runway Width0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftGrumman G-164A
Tail NumberN5368
Aircraft CategoryAir
DamageSubstantial
OperatorWilliams Ag Service
Operating RulePart 137
Engines1
Engine TypeReciprocating
Engine DetailsP&W · R-1340-AN-1 · Reciprocating · 600
Seats1
People & Injuries
Injury Summary1 injury (1 serious injury)
Fatal0
Serious1
Minor0
Uninjured0
Total1
Crew 1Age 39 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind330°
Visibility10 sm
CeilingNone
Temperature / Dew Point70 F / 0 C
Altimeter0
Observation Time06:00