MKC84LA213

NTSB accident investigation · Grumman G-164A · Gillette, AR · July 12, 1984

Accident · No injuriesLimited investigationFinal report
Date
July 12, 1984, 11:20 local (16:20 UTC)
Place
Gillette, AR
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N9785Grumman G-164A
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19840712031959A
Case key
33743

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.

Loss of engine power(partial) - mech failure/malfManeuvering - aerial application
Ignition system,magneto - failure,partialCause
Forced landingDescent - emergency
Nose overLanding - flare/touchdown
Terrain condition - softFactor

Analysis

During swath run engine ran rough and could not sustain acft in flight. The plt made a forced landing in a soft freshly plowed field. The acft nosed over during the landing. Inspection of the acft revealed that one magneto was missing teethfrom the drive gear which resulted in the ignition timing being off.

Aircraft

Registration
N9785
Reported as
Grumman G-164A
Category
Airplane
Serial number
814
Airframe hours
4,383
Engine
P&W R1340, 600 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Registered owner
John Trintes Flying Service
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · December 9, 1983 · 295 hours before
Departed
Gillette, AR
Airport
Trites

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
35
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Center
Flight hours
2,850 total · 1,500 in this make and model · 2,850 as pilot in command · 30 in the last 90 days · 10 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
320° at 6 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
86 °F, dew point 68 °F
Altimeter
29.00 inHg
Observed at
PBF, 28 nm away

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 N9785 · 2

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