NYC96LA145

NTSB accident investigation · Bell 47G-5 · Carver, MA · July 8, 1996

Accident · Minor injuriesLimited investigationFinal report
Date
July 8, 1996, 12:40 local (16:40 UTC)
Place
Carver, MA
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N8591FBell 47G-5
Weather
Instrument (IMC) · Day
Status
Completed · report February 1, 1997
Report
Approved by Office Director
FAA report
19960708016149A
Case key
39213

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 look out for obstacles, which resulted in a collision with wires and the ground.

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
Visual lookout - inadequatePilot in commandCause
Clearance - not maintainedPilot in commandCause
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The helicopter collided with power lines after the pilot completed an aerial spray run of a cranberry bog. According to the pilot, '...As I was departing the bog, I saw wires directly in front of me. I pulled back on the cyclic and raised the collective to try to fly over the wires. I cleared the wires initially, but could not recover from the maneuver before contacting the ground. The wind was behind me, and when at the top of the pull-up, I realized I couldn't fly out of it, and did a right 180 degree pedal turn, and lowered the nose to dive into the wind, I hit the ground in a level attitude before I could complete the maneuver.'

Factual narrative

On July 8, 1996, at 1240 eastern daylight time, a Bell 47G-5, a helicopter, N8591F, was substantially damaged when it collided with wires after takeoff from a cranberry bog, near Carver, Massachusetts. The certificated commercial pilot received minor injuries. Visual meteorological conditions prevailed for the positioning flight that was destined for Plymouth, Massachusetts. No flight plan had been filed for the flight conducted under 14 CFR Part 91.

In the NTSB Form 6120.1/2, the pilot stated:

"...I had just finished fertilizing the 'telephone' piece of the Smith-Hammond bog...As I was departing the bog, I saw wires directly in front of me. I pulled back on the cyclic and raised the collective to try to fly over the wires. I cleared the wires initially, but could not recover from the maneuver before contacting the ground. The wind was from behind me, and when at the top of the pull-up I realized I couldn't fly out of it, and did a right 180 degree pedal turn and lowered the nose to dive into the wind. I hit the ground in a level attitude before I could complete the maneuver..."

According to a Federal Aviation Administration Inspector, the helicopter struck the wires between the poles. Examination of the wreckage revealed no preimpact malfunction of the helicopter's systems or controls.

Aircraft

Registration
N8591F
Reported as
Bell 47G-5
Category
Helicopter
Serial number
7812
Airframe hours
5,169
Engine
Lycoming VO-435-B1A, 260 horsepower, reciprocating
Damage
Substantial damage
Flight
Positioning · Part 91
Operator
Wiggins Airways Inc.
Registered owner
Piper East, Inc.
Airworthiness certificate
Special, Restricted (Special)
Last inspection
100 hour · June 19, 1996 · 35 hours before
Departed
NONE
Destination
PYM · Plymouth, MA

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
57
Certificates
Flight instructor, Commercial
Airplane ratings
Single-engine sea, Single-engine land, Multi-engine land
Instrument ratings
Airplane, Helicopter
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
14,000 total · 1,800 in this make and model · 10,900 as pilot in command

Weather

Conditions
Instrument (IMC) · Day
Wind
190° at 10 knots
Visibility
5 statute miles
Lowest ceiling
900 ft overcast
Temperature
72 °F, dew point 70 °F
Altimeter
29.00 inHg
Observed at
EWB, 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 N8591F · 2

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