LAX91LA332

NTSB accident investigation · Grumman G-164B · Arizona City, AZ · July 28, 1991

Accident · FatalLimited investigationFinal report
Date
July 28, 1991, 04:30 local (11:30 UTC)
Place
Arizona City, AZ
Injuries
1 fatal
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
N6681QGrumman G-164B
Weather
Visual (VMC) · Night/dark
Status
Completed · report March 24, 1993
Report
Approved by Office Director
FAA report
19910728030339A
Case key
27307

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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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.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

In flight collision with objectManeuvering - aerial application
Light condition - dark nightFactor
Visual lookout - inadequatePilot in commandCause
Object - wire,transmission
In flight collision with terrain/waterDescent - uncontrolled

Analysis

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.

Aircraft

Registration
N6681Q
Reported as
Grumman G-164B
Category
Airplane
Serial number
1700
Airframe hours
919
Engine
P&W R1340 AN-1, 600 horsepower, reciprocating
Damage
Destroyed
Fire
On-Ground
Flight
Aerial application · Part 137
Operator
Al-Don Dusting Svc., Inc.
Registered owner
Arh Trust
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · June 19, 1991 · 65 hours before

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
55
Certificate
Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, Unknown
Seat
Front
Toxicology
Performed
Flight hours
24,000 total · 680 in this make and model

Weather

Conditions
Visual (VMC) · Night/dark
Visibility
10 statute miles
Lowest ceiling
None

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.

Other investigations on N6681Q · 2

Matched to the same aircraft by N-number and date.