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NTSB Report
September 26, 1984 · Bell 206L-1 · N5013F
West Delta 105
Overview
Report Status
Preliminary report
Event Type
Accident
Date
September 26, 1984
Injury Outcomes
No injuries (1 uninjured)
Location
West Delta 105
Aircraft
Bell 206L-1
Tail Number
N5013F
Operator
Commercial Helicopters
Injuries
None
Aircraft Damage
Substantial
NTSB Number
FTW84LA414
WHILE IN CRUISE FLT, TOTAL PWR LOSS WAS EXPERIENCED. PLT SETUP AUTOROTATIVE WATER LANDING, DEPLOYED EMERGENCY FLOATS. RIGHT FLOAT WAS NOT FULLY INFLATED BY WATER TOUCHDOWN, ACFT ROLLED RIGHT TO INVERTED POSITION. ENG TEARDOWN REVEALED CARBON BUILDUP BETWEEN TURBINE-TO-COMPRESSOR COUPLING AND TURBINE INNER SHAFT, CAUSING FRICTIONAL OVERHEAT LEADING TO SHAFT FAILURE.
Full Narrative
WHILE IN CRUISE FLT, TOTAL PWR LOSS WAS EXPERIENCED. PLT SETUP AUTOROTATIVE WATER LANDING, DEPLOYED EMERGENCY FLOATS. RIGHT FLOAT WAS NOT FULLY INFLATED BY WATER TOUCHDOWN, ACFT ROLLED RIGHT TO INVERTED POSITION. ENG TEARDOWN REVEALED CARBON BUILDUP BETWEEN TURBINE-TO-COMPRESSOR COUPLING AND TURBINE INNER SHAFT, CAUSING FRICTIONAL OVERHEAT LEADING TO SHAFT FAILURE.
Flight
Event TypeAccident
Event Time16:57 UTC
Nearest Airport0nm N
Runway0
Flight Plan FiledCvfr
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBell 206L-1
Tail NumberN5013F
Aircraft CategoryHeli
DamageSubstantial
OperatorCommercial Helicopters
Operating RulePart 135
Engines1
Engine TypeTurboshaft
Engine DetailsAllison · 250-C28B · Turboshaft · 435
Seats7
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 59 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind40° @ 10 kt, gusting 12 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point0 C
Altimeter0
Weather SourcePILO