FTW91DPG12

NTSB accident investigation · Bell 47-G3B1 · Colt, AR · June 1, 1991

Accident · Minor injuriesFinal report
Date
May 31, 1991, 20:00 local (Jun 1, 1991, 01:00 UTC)
Place
Colt, AR
Injuries
1 minor
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
N31052Bell 47-G3B1
Weather
Visual (VMC) · Day
Status
Completed · report May 3, 1993
Report
Approved by Office Director
FAA report
19910531018589A
Case key
23201

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 an undetermined reason. A factor was the unsuitable terrain.

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
Powerplant - undeterminedFactor
Reason for occurrence undeterminedCause
Forced landingDescent - emergency
In flight collision with terrain/waterManeuvering - aerial application
Terrain condition - none suitableFactor
Terrain condition - berm
Landing gear,skid assembly - sheared
Rotorcraft flight control,tail rotor cable - separation

Analysis

During a day agriculture operation, the pilot experienced a partial loss of engine power in a descending turn. The right skid sheared when it struck a berm and the tail rotor cable separated. The pilot lost control and the helicopter rolled on its right side. The helicopter was consumed by a post crash fire.

Aircraft

Registration
N31052
Reported as
Bell 47-G3B1
Category
Helicopter
Serial number
2934
Engine
Lycoming TVO-435-D1B, 270 horsepower, reciprocating
Damage
Destroyed
Fire
On-Ground
Flight
Aerial application · Part 137
Operator
Wilburn W. Taylor, doing business as Taylor Aviation, Inc.
Registered owner
Wilburn W. Taylor
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · April 1, 1991 · 100 hours before
Departed
NONE · Colt, AR

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
41
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Helicopter
Medical
Class 2, Valid Medical--no waivers/lim.
Flight hours
4,000 total · 1,500 in this make and model · 200 in the last 90 days · 60 in the last 30 days · 12 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
15 statute miles
Lowest ceiling
None
Temperature
79 °F, dew point 72 °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.