FTW91DRD03

NTSB accident investigation · Grumman G-164A · Bonita, LA · March 17, 1991

Accident · No injuriesFinal report
Date
March 17, 1991, 09:30 local (15:30 UTC)
Place
Bonita, LA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N9685Grumman G-164A
Weather
Visual (VMC) · Day
Status
Completed · report March 31, 1993
Report
Approved by Office Director
FAA report
19910317007249A
Case key
23222

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

On this page

Probable cause

A power loss due to a cracked cylinder. A factor was the soft terrain in which the forced landing was performed.

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(total) - mech failure/malfCruise
Engine assembly,cylinder - crackedCause
Forced landingDescent - emergency
Nose overLanding - roll
Terrain condition - softFactor

Analysis

En route to an aerial application field the pilot experienced a loss of power. A forced landing was performed into an open field, however, due to the soft terrain the airplane nosed over. The power loss was due to a cracked cylinder.

Aircraft

Registration
N9685
Reported as
Grumman G-164A
Category
Airplane
Serial number
1206
Airframe hours
5,428
Engine
P&W R-1340-AN1, 600 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Arkla Flyers, Inc.
Registered owner
Wilmont Flying Service, Inc.
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · April 1, 1990 · 142 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
42
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Center
Flight hours
10,163 total · 6,400 in this make and model · 10,000 as pilot in command · 10 in the last 90 days · 10 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
170° at 6 knots
Visibility
10 statute miles
Temperature
61 °F

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 N9685 · 1

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