MIA96LA122

NTSB accident investigation · Grumman G-164A · Edison, GA · April 18, 1996

Accident · Minor injuriesLimited investigationFinal report
Date
April 18, 1996, 18:00 local (22:00 UTC)
Place
Edison, GA
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N4238Grumman G-164A
Weather
Visual (VMC) · Day
Status
Completed · report July 3, 1996
Report
Approved by Office Director
FAA report
19960418007839A
Case key
38008

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

Failure of the mounting studs for the No. 4 cylinder, which resulted in separation of the cylinder and loss of engine power. The lack of suitable terrain for a forced landing was a related factor.

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/malfManeuvering - aerial application
Miscellaneous,bolt/nut/fastener/clamp/spring - failure,totalCause
Engine assembly,cylinder - separationCause
Forced landingDescent - emergency
Nose overLanding - roll
Terrain condition - none suitableFactor
Terrain condition - soft

Analysis

During an aerial application flight, the studs for the No. 4 cylinder failed, and the cylinder separated from the engine. All engine power was lost. While making a forced landing in a field, the aircraft nosed over.

Factual narrative

On April 18, 1996, about 1800 eastern daylight time, a Grumman G164A, N4238, registered to and operated by Sowega Flying Service, nosed over while making a forced landing in a field near Edison, Georgia, following loss of engine power, while on a 14 CFR Part 137 aerial application flight. Visual meteorological conditions prevailed at the time and no flight plan was filed. The aircraft received substantial damage and the commercial-rated pilot received minor injuries. The flight originated from the Sowega Air Strip, Edison, Georgia, about 20 minutes before the accident.

The pilot stated that during an aerial application run the mounting studs for the No. 4 cylinder failed and the cylinder separated from the engine. The engine lost all power. While making a forced landing in a plowed field, the aircraft nosed over.

Aircraft

Registration
N4238
Reported as
Grumman G-164A
Category
Airplane
Serial number
1006
Airframe hours
4,915
Engine
P&W R-1340-AN1, 600 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Registered owner
Sowega Flying Service
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · April 2, 1996 · 100 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 sea, Single-engine land
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
21,000 total · 11,000 in this make and model · 200 in the last 90 days · 100 in the last 30 days · 6 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
180° at 10 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
72 °F, dew point 57 °F
Altimeter
30.00 inHg
Observed at
ABY, 30 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 N4238 · 1

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