CHI86FER11

NTSB accident investigation · Bell 47G-5 · Brooten, MN · June 17, 1986

Accident · Serious injuriesFinal report
Date
June 16, 1986, 19:00 local (Jun 17, 1986, 00:00 UTC)
Place
Brooten, MN
Injuries
1 serious
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
N8122JBell 47G-5
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19860616025279A
Case key
13327

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

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.

Airframe/component/system failure/malfunctionManeuvering
Rotorcraft flight control,collective control rod - failure,totalCause
Rotorcraft flight control,collective control rod - overloadCause
In flight collision with terrain/waterManeuvering - aerial application

Analysis

According to the pilot, the helicopter collective control failed to respond to a climb input to level off after a descent for an agricultural swath run. Fire and impact damage to the helicopter was extensive, however one broken rod end in the collective control system failed through ductile overstress.

Aircraft

Registration
N8122J
Reported as
Bell 47G-5
Category
Helicopter
Serial number
25005
Airframe hours
4,652
Engine
Lycoming VO-435-B1A, 270 horsepower, reciprocating
Damage
Destroyed
Fire
On-Ground
Flight
Aerial application · Part 137
Registered owner
Dennis Claire
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · January 16, 1986 · 43 hours before

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
36
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Right
Flight hours
4,600 total · 1,200 in this make and model · 4,000 as pilot in command · 45 in the last 90 days · 10 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
360° at 10 knots, gusting 25
Visibility
20 statute miles
Lowest ceiling
None
Temperature
64 °F
Altimeter
30.00 inHg

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.