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NTSB Report

February 18, 1988 · Bell 206A · N7981J

Roseburg, OR

Overview

Report Status

Preliminary report

Event Type

Accident

Date

February 18, 1988

Injury Outcomes

3 injuries (2 serious injuries, 1 minor injury), 1 uninjured

Location

Roseburg, OR

Aircraft

Bell 206A

Tail Number

N7981J

Operator

Mountain Air Helicopters

Injuries

Serious

Aircraft Damage

Substantial

NTSB Number

SEA88FA050

WHILE HOVERING AT 200' AGL, THE ENG LOST POWER & THE PLT ENTERED AN AUTOROTATION. HE MANEUVERED TO AVOID TREES & LANDED AMID TREE STUMPS IN A LOGGING CLEAR CUT AREA. AN INVESTIGATION REVEALED THE 1ST STAGE TURBINE WHEEL HAD FAILED. THE WHEEL EXITED THE ENG & AIRFRAME IN MORE THAN TWO PIECES & WAS NOT RECOVERED. THE MODE OF WHEEL FAILURE WAS NOT DETERMINED.

Full Narrative

WHILE HOVERING AT 200' AGL, THE ENG LOST POWER & THE PLT ENTERED AN AUTOROTATION. HE MANEUVERED TO AVOID TREES & LANDED AMID TREE STUMPS IN A LOGGING CLEAR CUT AREA. AN INVESTIGATION REVEALED THE 1ST STAGE TURBINE WHEEL HAD FAILED. THE WHEEL EXITED THE ENG & AIRFRAME IN MORE THAN TWO PIECES & WAS NOT RECOVERED. THE MODE OF WHEEL FAILURE WAS NOT DETERMINED.

Flight

Event TypeAccident

Event Time09:03 PST

Nearest Airport0nm N

Runway0

Flight Plan FiledNone

Aircraft FireNo

Aircraft ExplosionNo

Aircraft

AircraftBell 206A

Tail NumberN7981J

Aircraft CategoryHeli

DamageSubstantial

OperatorMountain Air Helicopters

Operating RulePart 91

Engines1

Engine TypeTurboshaft

Engine DetailsAllison · 250-C20 · Turboshaft · 400

Seats5

People & Injuries

Injury Summary3 injuries (2 serious injuries, 1 minor injury), 1 uninjured

Fatal0

Serious2

Minor1

Uninjured1

Total4

Crew 1Age 44 · Second Class

Conditions

ConditionsVMC

LightDaylight

WindCalm

Visibility20 sm

CeilingNone

Temperature / Dew Point0 C / 0 C

Altimeter0

Weather SourcePILO

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February 18, 1988 · Bell 206A · N7981J

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