FTW86FA066

NTSB accident investigation · Grumman G164A · Hankamer, TX · April 15, 1986

Accident · FatalField investigationFinal report
Date
April 15, 1986, 10:00 local (16:00 UTC)
Place
Hankamer, TX
Injuries
2 fatal
Phase of flight
Standing
Aircraft
N8751HGrumman G164AN8696HGrumman G164A
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Case key
21897

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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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.

Miscellaneous/otherStanding - pre-flight
Planning/decision - improperPilot in command
Self-induced pressurePilot in command
Physical impairment(other toxic)Pilot in command
Midair collisionClimb
Visual lookout - inadequatePilot in commandCause
ComplacencyPilot in command
Physical impairment(other toxic)Pilot in command
Midair collisionDescent - normal
Visual lookout - inadequatePilot in commandCause

Analysis

Two Grumman ag cats operated by the same air service collided in mid air. The accident occurred as one was departing and the other was returning to a temporary air strip adjacent to the fields they were fertilizing. Witnesses indicated that both pilot attempted to avoid the other by pulling up. Low cholinerase was found in the toxicological sample of the older pilot, who was the owner of the air service.

Aircraft · 2

Registration
N8751H
Reported as
Grumman G164A
Category
Airplane
Serial number
1510
Airframe hours
3,182
Engine
P&W R-1340-ANI, 600 horsepower, reciprocating
Damage
Destroyed
Fire
Both
Flight
Aerial application · Part 137
Registered owner
Harmon Air Service
Airworthiness certificate
Special, Restricted (Special)
Last inspection
100 hour · March 30, 1986 · 30 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.

Registration
N8696H
Reported as
Grumman G164A
Category
Airplane
Serial number
1474
Airframe hours
3,025
Engine
P&W R-1340-AN1, 600 horsepower, reciprocating
Damage
Destroyed
Fire
Both
Flight
Aerial application · Part 137
Registered owner
Harmon Air Serivce
Airworthiness certificate
Special, Restricted (Special)
Last inspection
100 hour · February 10, 1986 · 61 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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Pilot, aircraft N8751H
Age
62
Certificate
Commercial
Airplane ratings
Single-engine land, Multi-engine land
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Center
Toxicology
Performed
Flight hours
16,000 total
Role
Pilot, aircraft N8696H
Age
53
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Center
Toxicology
Performed
Flight hours
12,500 total

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None
Temperature
81 °F

FAA reports on this event · 2

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

Other investigations on N8751H · 1

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