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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

August 21, 1992 · Hiller Hiller UH-12E Hiller UH · N527HA

Dows, IA

Overview

Report Status

Probable Cause

Event Type

Accident

Date

August 21, 1992

Injury Outcomes

No injuries (1 uninjured)

Location

Dows, IA

Aircraft

Hiller Hiller UH-12E Hiller UH

Tail Number

N527HA

Operator

Bonanza Valley Aviation

Injuries

None

Aircraft Damage

Substantial

NTSB Number

CHI92DCD09

THE PILOT OF THE ACCIDENT HELICOPTER REPORTED AN ENGINE FAILURE OCCURRED WHILE HE WAS PERFORMING AERIAL APPLICATION OF AGRICULTURAL CHEMICALS. THE HELICOPTER COLLIDED WITH A DITCH DURING THE FORCED LANDING. POST ACCIDENT INSPECTION REVEALED CONTAMINATED FUEL IN THE HELICOPTER FUEL SYSTEM AND IN THE FUEL TANK USED TO SERVICE THE AIRCRAFT.

NTSB Probable Cause

CONTAMINATED FUEL RESULTING IN A LOSS OF ENGINE POWER.

Full Narrative

THE PILOT OF THE ACCIDENT HELICOPTER REPORTED AN ENGINE FAILURE OCCURRED WHILE HE WAS PERFORMING AERIAL APPLICATION OF AGRICULTURAL CHEMICALS. THE HELICOPTER COLLIDED WITH A DITCH DURING THE FORCED LANDING. POST ACCIDENT INSPECTION REVEALED CONTAMINATED FUEL IN THE HELICOPTER FUEL SYSTEM AND IN THE FUEL TANK USED TO SERVICE THE AIRCRAFT.

Flight

Event TypeAccident

Event Time19:30 CDT

Nearest Airport0nm N

Runway0

Flight Plan FiledNone

Aircraft FireNo

Aircraft ExplosionNo

Aircraft

AircraftHiller Hiller UH-12E Hiller UH

Tail NumberN527HA

Aircraft CategoryHeli

DamageSubstantial

OperatorBonanza Valley Aviation

Operating RulePart 137

Engines1

Engine TypeReciprocating

Engine DetailsLycoming · VO-540 · Reciprocating · 305

Seats2

People & Injuries

Injury SummaryNo injuries (1 uninjured)

Fatal0

Serious0

Minor0

Uninjured1

Total1

Crew 1Age 22 · Second Class

Conditions

ConditionsVMC

LightDaylight

Wind150° @ 6 kt

Visibility15 sm

CeilingNone

Temperature / Dew Point68 F / 61 F

Altimeter30.00 inHg

Weather SourcePILO

500 – Data service is offline

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August 21, 1992 · Hiller Hiller UH-12E Hiller UH · N527HA

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Appendix: Source Data

Full Narrative