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NTSB Report

June 17, 1986 · Bell 47G-5 · N8122J

Brooten, MN

Overview

Report Status

Preliminary report

Event Type

Accident

Date

June 17, 1986

Injury Outcomes

1 injury (1 serious injury)

Location

Brooten, MN

Aircraft

Bell 47G-5

Tail Number

N8122J

Injuries

Serious

Aircraft Damage

Destroyed

NTSB Number

CHI86FER11

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.

Full Narrative

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.

Flight

Event TypeAccident

Event Time19:00 CDT

Nearest Airport0nm N

Runway0

Runway Length0

Runway Width0

Flight Plan FiledNone

Aircraft FireGrd

Aircraft ExplosionNo

Aircraft

AircraftBell 47G-5

Tail NumberN8122J

Aircraft CategoryHeli

DamageDestroyed

Operating RulePart 137

Engines1

Engine TypeReciprocating

Engine DetailsLycoming · VO-435-B1A · Reciprocating · 270

Seats2

People & Injuries

Injury Summary1 injury (1 serious injury)

Fatal0

Serious1

Minor0

Uninjured0

Total1

Crew 1Age 36 · First Class

Conditions

ConditionsVMC

LightDaylight

Wind360° @ 10 kt, gusting 25 kt

Visibility20 sm

CeilingNone

Temperature / Dew Point64 F / 0 C

Altimeter30.00 inHg

Weather SourcePILO

500 – Data service is offline

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June 17, 1986 · Bell 47G-5 · N8122J

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Full Narrative