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NTSB Reports is an independent research and search tool for public aviation accident and incident records. It brings NTSB aviation reports, structured fields, docket files, extracted figures, photos, videos, and update history into one searchable interface.

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NTSB Report

May 21, 1991 · Bell UH-1B · N87966

Dog Fish Bay, AK

Overview

Report Status

Probable Cause

Event Type

Accident

Date

May 21, 1991

Injury Outcomes

1 injury (1 fatality)

Location

Dog Fish Bay, AK

Aircraft

Bell UH-1B

Tail Number

N87966

Operator

Gradney Helicopter

Injuries

Fatal

Aircraft Damage

Destroyed

NTSB Number

ANC91LA058

THE HELICOPTER HAD JUST LIFTED OFF WITH A LOG ON A 150 FOOT LONG LINE WHEN THE HELICOPTER CRASHED. THE INVESTIGATION REVEALED THAT THE HELICOPTER WAS OVERWEIGHT BY 1,660 POUNDS.

NTSB Probable Cause

THE PILOT'S EXCEEDING THE GROSS WEIGHT OF THE AIRCRAFT AND INADEQUATE SUPERVISION BY COMPANY MANAGEMENT. CONTRIBUTING TO THE ACCIDENT WAS THE HIGH VEGETATION.

Full Narrative

THE HELICOPTER HAD JUST LIFTED OFF WITH A LOG ON A 150 FOOT LONG LINE WHEN THE HELICOPTER CRASHED. THE INVESTIGATION REVEALED THAT THE HELICOPTER WAS OVERWEIGHT BY 1,660 POUNDS.

Flight

Event TypeAccident

Event Time12:32 AKDT

Nearest Airport0nm

Runway0

Flight Plan FiledNone

Aircraft FireGrd

Aircraft ExplosionGrd

Aircraft

AircraftBell UH-1B

Tail NumberN87966

Aircraft CategoryHeli

DamageDestroyed

OperatorGradney Helicopter

Operating RulePart 133

Engines1

Engine TypeTurboshaft

Engine DetailsLycoming · T53-L11D · Turboshaft · 1100

Seats2

People & Injuries

Injury Summary1 injury (1 fatality)

Fatal1

Serious0

Minor0

Uninjured0

Total1

Crew 1Age 44 · Second Class

Conditions

ConditionsVMC

LightDaylight

Wind270° @ 10 kt

Visibility20 sm

CeilingNone

Temperature / Dew Point61 F / 41 C

Altimeter30.00 inHg

Weather SourceWIT

500 – Data service is offline

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May 21, 1991 · Bell UH-1B · N87966

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Full Narrative