LAX01LA276

NTSB accident investigation · Bell 47G-4A · Strathmore, CA · August 11, 2001

Accident · Minor injuriesLimited investigationFinal report
Date
August 11, 2001, 06:03 local (13:03 UTC)
Place
Strathmore, CA
Injuries
1 minor
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
N4262YBell 47G-4A
Weather
Visual (VMC) · Day
Status
Completed · report October 23, 2002
Report
Approved by Office Director
Parties
FAA Flight Standards District Office
FAA report
20010811020569A
Case key
53014

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 pilot's inadequate visual lookout while maneuvering during an aerial application flight.

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.

In flight collision with objectManeuvering - aerial application
Object - wire,transmission
Clearance - not maintainedPilot in command
Visual lookout - inadequatePilot in commandCause

Analysis

During the aerial application flight, the pilot completed a spray run and was returning to the truck when he flew into a wire in the middle of the field, at 15 feet above the ground. Thereafter, he lost control of the helicopter and it crashed coming to rest on its right side. Prior to the mishap, the pilot had observed poles in the area, but had not observed the line that he collided with during the low altitude pass. No mechanical malfunctions or failures associated with the operation of the helicopter were indicated.

Factual narrative

On August 11, 2001, about 0603 hours Pacific daylight time, a Bell 47G-4A, N4262Y, owned and operated by Moore Aviation, Inc., Tulare, California, impacted a power line and crashed into a field near Strathmore, California. Visual meteorological conditions existed during the aerial application flight that was performed under 14 CFR Part 137. The helicopter was destroyed, and the commercial pilot received minor injuries. The flight originated from Strathmore about 0555.

The pilot reported that he had finished performing a spray run and was returning to the truck when he flew into a wire in the middle of the field, at 15 feet above the ground. Thereafter, he lost control of the helicopter and it crashed in the field coming to rest on its right side.

The operator reported that prior to the mishap, the pilot had observed poles in the area but had not observed the line that he collided with during the low altitude pass. No mechanical malfunctions or failures associated with the operation of the helicopter were reported.

Aircraft

Registration
N4262Y
Reported as
Bell 47G-4A
Category
Helicopter
Serial number
7674
Airframe hours
12,037
Engine
Lycoming VO540-BIB3, 285 horsepower, reciprocating
Damage
Destroyed
Flight
Aerial application · Part 137
Registered owner
Moore Aviation Inc
Airworthiness certificate
Special, Restricted (Special)
Last inspection
100 hour · May 29, 2001 · 91 hours before
Departed
Strathmore, CA
Destination
CA

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
66
Injuries
Minor
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Last flight review
June 26, 2000
Seat
Left
Flight hours
12,620 total · 5,000 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None
Temperature
61 °F, dew point 55 °F
Altimeter
29.90 inHg
Observed at
VIS, 13 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 N4262Y · 1

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