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NTSB Report
July 28, 1991 · Grumman G-164B · N6681Q
Arizona City, AZ
Overview
Report Status
Probable Cause
Event Type
Accident
Date
July 28, 1991
Injury Outcomes
1 injury (1 fatality)
Location
Arizona City, AZ
Aircraft
Grumman G-164B
Tail Number
N6681Q
Operator
Al-Don Dusting Svc
Injuries
Fatal
Aircraft Damage
Destroyed
NTSB Number
LAX91LA332
A GRUMMAN 164B COLLIDED WITH POWER TRANSMISSION WIRES DURING A NIGHT AERIAL APPLICATION FLIGHT. THE PILOT WAS SPRAYING A COTTON FIELD AT THE TIME OF THE ACCIDENT. THE PILOT WAS USING SPOT LIGHTS INSTALLED ON THE AIRPLANE FOR THE PURPOSE OF NAVIGATING IN THE FIELD AND OBSTRUCTION DETECTION. A BLUE MOUNTAIN AVIATION NIGHT FLYING LIGHT KIT WAS INSTALLED ON THE AIRPLANE. THE ALTERATION/MODIFICATION OF THE AIRPLANE AND INSTALLATION OF THE LIGHTS IS AUTHORIZED BY AN APPROVED FAA SUPPLEMENTAL TYPE CERTIFICATE.
NTSB Probable Cause
FAILURE OF THE PILOT TO MAINTAIN AN ADEQUATE VISUAL OUTLOOK TO AVOID THE COLLISION WITH THE POWER TRANSMISSION LINES. CONTRIBUTING TO THE ACCIDENT WAS THE DARK NIGHT LIGHT CONDITIONS THAT PREVAILED AT THE TIME OF THE ACCIDENT.
Full Narrative
A GRUMMAN 164B COLLIDED WITH POWER TRANSMISSION WIRES DURING A NIGHT AERIAL APPLICATION FLIGHT. THE PILOT WAS SPRAYING A COTTON FIELD AT THE TIME OF THE ACCIDENT. THE PILOT WAS USING SPOT LIGHTS INSTALLED ON THE AIRPLANE FOR THE PURPOSE OF NAVIGATING IN THE FIELD AND OBSTRUCTION DETECTION. A BLUE MOUNTAIN AVIATION NIGHT FLYING LIGHT KIT WAS INSTALLED ON THE AIRPLANE. THE ALTERATION/MODIFICATION OF THE AIRPLANE AND INSTALLATION OF THE LIGHTS IS AUTHORIZED BY AN APPROVED FAA SUPPLEMENTAL TYPE CERTIFICATE.
Flight
Event TypeAccident
Event Time04:30 MST
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireGrd
Aircraft ExplosionGrd
Aircraft
AircraftGrumman G-164B
Tail NumberN6681Q
Aircraft CategoryAir
DamageDestroyed
OperatorAl-Don Dusting Svc
Operating RulePart 137
Engines1
Engine TypeReciprocating
Engine DetailsP&W · R1340 AN-1 · Reciprocating · 600
Seats1
People & Injuries
Injury Summary1 injury (1 fatality)
Fatal1
Serious0
Minor0
Uninjured0
Total1
Crew 1Age 55 · Second Class
Conditions
ConditionsVMC
LightDark Night
WindCalm
Visibility10 sm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter0
Weather SourceWIT