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NTSB Report
September 29, 1991 · Grumman G164A-450 · N16SS
Queen Creek, AZ
Overview
Report Status
Probable Cause
Event Type
Accident
Date
September 29, 1991
Injury Outcomes
1 injury (1 minor injury)
Location
Queen Creek, AZ
Aircraft
Grumman G164A-450
Tail Number
N16SS
Operator
K & K Aerial Applicators
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
LAX91LA413
THE CERTIFICATED COMMERCIAL PILOT WAS CONDUCTING AERIAL SPRAYING OPERATIONS OVER A COTTON FIELD AT NIGHT. WHILE IN THE MIDDLE OF A SPRAY RUN, THE PILOT NOTICED SPARKS COMING FROM THE ENGINE. HE ATTEMPTED TO GAIN ALTITUDE AS THE ENGINE BEGAN TO LOSE POWER. THE PILOT MADE A FORCED LANDING ON A DIRT ROAD NEXT TO THE FIELD. DURING THE TOUCHDOWN, THE AIRPLANE STRUCK A DITCH ALONG THE SIDE OF THE ROAD. THE AIRPLANE THEN BOUNCED AND NOSED OVER. THE PILOT RECEIVED MINOR INJURIES. AN INSPECTION OF THE ENGINE REVEALED THAT A CYLINDER HAD A CIRCUMFERENTIAL SEPARATION NEAR THE TOP OF THE COOLING FINS.
NTSB Probable Cause
FAILURE OF THE ENGINE CYLINDER, PRODUCING A LOSS OF POWER. CONTRIBUTING TO THE ACCIDENT WAS THE LOCATION OF AN IRRIGATION DITCH NEXT TO THE LANDING AREA AND A DARK NIGHT LIGHT CONDITION.
Full Narrative
THE CERTIFICATED COMMERCIAL PILOT WAS CONDUCTING AERIAL SPRAYING OPERATIONS OVER A COTTON FIELD AT NIGHT. WHILE IN THE MIDDLE OF A SPRAY RUN, THE PILOT NOTICED SPARKS COMING FROM THE ENGINE. HE ATTEMPTED TO GAIN ALTITUDE AS THE ENGINE BEGAN TO LOSE POWER. THE PILOT MADE A FORCED LANDING ON A DIRT ROAD NEXT TO THE FIELD. DURING THE TOUCHDOWN, THE AIRPLANE STRUCK A DITCH ALONG THE SIDE OF THE ROAD. THE AIRPLANE THEN BOUNCED AND NOSED OVER. THE PILOT RECEIVED MINOR INJURIES. AN INSPECTION OF THE ENGINE REVEALED THAT A CYLINDER HAD A CIRCUMFERENTIAL SEPARATION NEAR THE TOP OF THE COOLING FINS.
Flight
Event TypeAccident
Event Time22:30 MST
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireGrd
Aircraft ExplosionNo
Aircraft
AircraftGrumman G164A-450
Tail NumberN16SS
Aircraft CategoryAir
DamageSubstantial
OperatorK & K Aerial Applicators
Operating RulePart 137
Engines1
Engine TypeReciprocating
Engine DetailsP&W · R985AN-14B · Reciprocating · 450
Seats1
People & Injuries
Injury Summary1 injury (1 minor injury)
Fatal0
Serious0
Minor1
Uninjured0
Total1
Crew 1Age 38 · Second Class
Conditions
ConditionsVMC
LightDark Night
WindCalm
Visibility30 sm
CeilingNone
Temperature / Dew Point0 C
Altimeter0
Weather SourcePILO