SEA96LA176

NTSB accident investigation · Grumman-Schweizer G-164A · Belgrade, MT · August 3, 1996

Accident · No injuriesLimited investigationFinal report
Date
August 3, 1996, 08:00 local (14:00 UTC)
Place
Belgrade, MT
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N9853Grumman-Schweizer G-164A
Weather
Visual (VMC) · Day
Status
Completed · report May 23, 1997
Report
Approved by Office Director
FAA report
19960803020849A
Case key
42434

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

loss of engine power for undetermined reason(s). A factor relating to the accident was: a ditch in the field where the forced landing was executed.

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 powerCruise
Reason for occurrence undeterminedCause
Forced landingEmergency descent/landing
On ground/water encounter with terrain/waterLanding - roll
Terrain condition - ditchFactor

Analysis

While returning from an aerial application flight, the turbine-powered Grumman G-164A experienced a complete loss of power. The pilot made a successful touchdown in an open field, but the aircraft encountered a ditch during the landing roll. When the aircraft impacted the ditch, it sustained substantial damage. The cause of the power loss was not determined.

Factual narrative

On August 3, 1996, approximately 0800 mountain daylight time, a turbine-powered Grumman-Schweizer G-164A "Ag-Cat", N9853, registered to and being flown by a commercial pilot, sustained substantial damage when the aircraft impacted a ditch during the landing roll following a loss of power approximately 10 nautical miles southwest of Belgrade, Montana. The pilot reportedly was uninjured. Visual meteorological conditions prevailed and no flight plan had been filed. The flight, which had been engaged in aerial application and was returning at the end of a spray run, was to have been operated under 14CFR137.

The pilot reported to an FAA inspector that while in cruise fight, the aircraft's engine began to stream white smoke and power was lost shortly thereafter. The pilot executed a forced landing in an open field, but during the landing roll, the aircraft impacted a ditch and sustained substantial damage. A post-accident investigation did not determine the reason for the loss of power.

Aircraft

Registration
N9853
Reported as
Grumman-Schweizer G-164A
Category
Airplane
Serial number
1291
Airframe hours
1,787
Engine
Garrett TPE-331-1, 665 horsepower, turbo prop
Damage
Substantial damage
Flight
Aerial application · Part 137
Registered owner
Morgan, Boyd, J.
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · January 5, 1996 · 200 hours before
Departed
Belgrade, MT

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
51
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Center
Flight hours
6,100 total · 6,100 as pilot in command · 270 in the last 90 days

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
30 statute miles
Lowest ceiling
5,000 ft overcast
Temperature
55 °F
Altimeter
29.00 inHg

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 N9853 · 1

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