FTW93LA178

NTSB accident investigation · Bell-Transworld 47G-2 · Wynne, AR · June 5, 1993

Accident · No injuriesLimited investigationFinal report
Date
June 5, 1993, 14:45 local (19:45 UTC)
Place
Wynne, AR
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N9238ZBell-Transworld 47G-2
Weather
Visual (VMC) · Day
Status
Completed · report September 13, 1994
Report
Approved by Office Director
FAA report
19930605017379A
Case key
18766

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

Partial power loss due to the failure of one magneto. 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 power(partial) - mech failure/malfManeuvering - aerial application
Ignition system,magneto - failure,totalCause
Reason for occurrence undetermined
Forced landingDescent - emergency
In flight collision with objectDescent - emergency
Object - tree(s)
Terrain condition - none suitableFactor

Analysis

According to the pilot, he had pulled up from a swath run when the engine lost partial power. He further stated that he was unable to sustain level flight and the aircraft settled into trees. According to the operator, post-accident inspection revealed that the engine had exprerienced a magneto failure.

Factual narrative

On June 5, 1993, at approximately 1445 central daylight time, a Bell-Transworld Helicopter Corporation 47G-2, N9238Z, was substantially damaged when it collided with trees during an uncontrolled descent, near Wynne, Arkansas. The aircraft, owned and operated by Jimair, and flown by a commercial pilot, was on a local aerial application flight. There was no flight plan filed and visual meteorological conditions prevailed throughout the area. The pilot, the sole occupant, was not injured.

According to the pilot, he was about to finish seeding a field with rice when he pulled up from a swath run and the engine lost power. The pilot stated that as he pulled up, the engine "bogged down" and lost power, but did not quit totally. He further stated that the aircraft began to settle toward the ground and collided with trees. The aircraft subsequently impacted the ground. According to information received from the operator, post-accident inspection revealed that the engine had experienced a magneto failure.

Aircraft

Registration
N9238Z
Reported as
Bell-Transworld 47G-2
Category
Helicopter
Serial number
TWH-5
Engine
Lycoming IO-430, 265 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Registered owner
Jimair
Airworthiness certificate
Standard, Utility
Last inspection
Annual · January 1, 1992 · 102 hours before
Departed
NONE
Destination
NONE

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, Multi-engine land
Instrument ratings
Airplane, Helicopter
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
6,599 total · 6,500 as pilot in command · 300 in the last 90 days · 150 in the last 30 days · 6 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
180° at 5 knots
Visibility
25 statute miles
Lowest ceiling
None
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 N9238Z · 2

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