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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

March 7, 1986 · Aerospatiale SE 318C · N4966

Siletz, OR

Overview

Report Status

Preliminary report

Event Type

Accident

Date

March 7, 1986

Injury Outcomes

1 injury (1 fatality)

Location

Siletz, OR

Aircraft

Aerospatiale SE 318C

Tail Number

N4966

Operator

Lorance E Osborne

Injuries

Fatal

Aircraft Damage

Destroyed

NTSB Number

SEA86FA073

THE PLT UNSUCCESSFULLY ATTEMPTED TO LIFT A 1597 LB LOAD OF CEDAR BLOCKS WHICH WOULD HAVE PLACED THE HELICOPTER APRX 880 LBS OVER ITS MAX GROSS WEIGHT WITH AN EXTERNAL LOAD. THE PLT WAS SETTING THE LOAD DOWN FOR GROUND PERSONNEL TO UNLOAD SOME OF THE BLOCKS WHEN A LOSS OF PWR OCCURRED. THE HELICOPTER THEN DESCENDED TO GROUND IMPACT WITH THE EXTERNAL LOAD LINE STILL ATTACHED. INSPECTION REVEALED THE ENG SUSTAINED A COMPRESSOR STALL AND THE TURBINE SECTION OF THE ENG HAD BEEN BURNED.

Full Narrative

THE PLT UNSUCCESSFULLY ATTEMPTED TO LIFT A 1597 LB LOAD OF CEDAR BLOCKS WHICH WOULD HAVE PLACED THE HELICOPTER APRX 880 LBS OVER ITS MAX GROSS WEIGHT WITH AN EXTERNAL LOAD. THE PLT WAS SETTING THE LOAD DOWN FOR GROUND PERSONNEL TO UNLOAD SOME OF THE BLOCKS WHEN A LOSS OF PWR OCCURRED. THE HELICOPTER THEN DESCENDED TO GROUND IMPACT WITH THE EXTERNAL LOAD LINE STILL ATTACHED. INSPECTION REVEALED THE ENG SUSTAINED A COMPRESSOR STALL AND THE TURBINE SECTION OF THE ENG HAD BEEN BURNED.

Flight

Event TypeAccident

Event Time09:40 PST

Nearest Airport0nm N

Runway0

Runway Length0

Runway Width0

Flight Plan FiledNone

Aircraft FireNo

Aircraft ExplosionNo

Aircraft

AircraftAerospatiale SE 318C

Tail NumberN4966

Aircraft CategoryHeli

DamageDestroyed

OperatorLorance E Osborne

Operating RulePart 133

Engines1

Engine TypeTurboshaft

Engine DetailsAstazou · IIG · Turboshaft · 523

Seats2

People & Injuries

Injury Summary1 injury (1 fatality)

Fatal1

Serious0

Minor0

Uninjured0

Total1

Crew 1Age 44 · Second Class

Conditions

ConditionsVMC

LightDaylight

WindCalm

Visibility5 sm

CeilingBroken clouds 2500 ft

Temperature / Dew Point50 / 0 C

Altimeter0

Weather SourceWIT

500 – Data service is offline

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March 7, 1986 · Aerospatiale SE 318C · N4966

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