FTW94LA097

NTSB accident investigation · Grumman G-164B · Hamburg, AR · March 14, 1994

Accident · No injuriesLimited investigationFinal report
Date
March 14, 1994, 17:56 local (23:56 UTC)
Place
Hamburg, AR
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N6665QGrumman G-164B
Weather
Visual (VMC) · Day
Status
Completed · report November 14, 1994
Report
Approved by Office Director
Case key
19011

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

The loss of engine power due to fouled spark plugs. A factor was the lack of suitable terrain for the forced landing.

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 powerManeuvering - aerial application
Ignition system,spark plug - fouledCause
Forced landingDescent - emergency
In flight collision with terrain/waterDescent - emergency
Terrain condition - none suitableFactor

Analysis

During aerial application maneuvering the aircraft lost partial engine power. During the subsequent forced landing the aircraft impacted the ground, bounced twice, and nosed over to the inverted position. An inspection of the engine revealed that the spark plugs were fouled.

Factual narrative

On March 14, 1994, at 1756 central standard time, a Grumman G- 164B, N6665Q, was substantially damaged during a forced landing. The commercial pilot was not injured. Visual meteorological conditions prevailed for the aerial application flight.

The pilot reported to a Federal Aviation Administration inspector that the engine lost power during the application of fertilizer. He then proceeded to dump the remainder of his load. The aircraft impacted the ground, bounced twice, and nosed over to the inverted position.

An examination of the engine by a Federal Aviation Administration inspector and the owner revealed that the spark plugs were fouled.

The aircraft was released to the owner.

Aircraft

Registration
N6665Q
Reported as
Grumman G-164B
Category
Airplane
Serial number
188B
Engine
P&W R-985-AN1, 450 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Registered owner
Robinson, Leroy
Airworthiness certificate
Special, Restricted (Special)

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
59
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Front
Flight hours
13,000 total · 600 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
220° at 8 knots
Visibility
15 statute miles
Lowest ceiling
None
Temperature
73 °F, dew point 36 °F
Altimeter
29.00 inHg
Observed at
PBF, 65 nm away