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NTSB Report
July 31, 1990 · Bell 47G3B1 · N4990H
Coon Rapids, MN
Overview
Report Status
Probable Cause
Event Type
Accident
Date
July 31, 1990
Injury Outcomes
No injuries (1 uninjured)
Location
Coon Rapids, MN
Aircraft
Bell 47G3B1
Tail Number
N4990H
Injuries
None
Aircraft Damage
Substantial
NTSB Number
CHI90DER03
WHILE IN NORMAL CRUISE FLIGHT, THE HELICOPTER EXPERIENCED A TOTAL LOSS OF ENGINE POWER. AN AUTOROTATIONAL LANDING WAS ATTEMPTED, HOWEVER THE PILOT MISJUDGED THE FLARE AND LANDED HARD RENDERING SUBSTANTIAL DAMAGE TO THE AIRCRAFT. SUBSEQUENT INVESTIGATION REVEALED ONLY UNUSABLE FUEL IN THE TANKS OF THE HELICOPTER. WHEN FUEL WAS ADDED TO THE TANKS THE ENGINE RAN NORMALLY.
NTSB Probable Cause
THE PILOT-IN-COMMAND'S INACCURATE FUEL CONSUMPTION CALCULATIONS AND MISJUDGEMENT OF HIS FUEL SUPPLY.
Full Narrative
WHILE IN NORMAL CRUISE FLIGHT, THE HELICOPTER EXPERIENCED A TOTAL LOSS OF ENGINE POWER. AN AUTOROTATIONAL LANDING WAS ATTEMPTED, HOWEVER THE PILOT MISJUDGED THE FLARE AND LANDED HARD RENDERING SUBSTANTIAL DAMAGE TO THE AIRCRAFT. SUBSEQUENT INVESTIGATION REVEALED ONLY UNUSABLE FUEL IN THE TANKS OF THE HELICOPTER. WHEN FUEL WAS ADDED TO THE TANKS THE ENGINE RAN NORMALLY.
Flight
Event TypeAccident
Event Time10:07 CDT
Nearest Airport0nm N
Runway0
Runway Length0
Runway Width0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBell 47G3B1
Tail NumberN4990H
Aircraft CategoryHeli
DamageSubstantial
Operating RulePart 137
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · VO435A1F · Reciprocating · 260
Seats3
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 37 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind240° @ 8 kt
Visibility20 sm
CeilingNone
Temperature / Dew Point70 F / 54
Altimeter30.00 inHg
Observation Time15:00
Weather SourceWFAC