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NTSB Report
August 9, 1982 · Aerospatiale SA-315B · N10067
Afton, WY
Overview
Report Status
Preliminary report
Event Type
Accident
Date
August 9, 1982
Injury Outcomes
No injuries (1 uninjured)
Location
Afton, WY
Aircraft
Aerospatiale SA-315B
Tail Number
N10067
Operator
Blain Sales
Injuries
None
Aircraft Damage
Destroyed
NTSB Number
DEN82DA159
EN ROUTE DURING A SEISMIC OPERATION A LOUD SCREECHING, GRINDING SOUND WAS HEARD. THE PILOT REPORTED THE AIRCRAFT SEEMED TO BUCK. A LONG FLAME EMITTING FROM THE AFT END OF THE AIRCRAFT WAS OBSERVED BY WITNESSES. THE ENGINE CEASED AND THE AIRCRAFT CRASHED INTO TREES. ENGINE DISASSEMBLY REVEALED SUBSTANTIAL INTERNAL DAMAGE TO THE AFT AXIAL COMPRESSOR BEARING, AXIAL COMPRESSOR BLADES AND DIFFUSER BLADES. TWO SECTIONS OF THE NO.3 STATOR BLADE WERE EXAMINED AND REVEALED SURFACE MARKINGS INDICATIVE OF FATIGUE.
Full Narrative
EN ROUTE DURING A SEISMIC OPERATION A LOUD SCREECHING, GRINDING SOUND WAS HEARD. THE PILOT REPORTED THE AIRCRAFT SEEMED TO BUCK. A LONG FLAME EMITTING FROM THE AFT END OF THE AIRCRAFT WAS OBSERVED BY WITNESSES. THE ENGINE CEASED AND THE AIRCRAFT CRASHED INTO TREES. ENGINE DISASSEMBLY REVEALED SUBSTANTIAL INTERNAL DAMAGE TO THE AFT AXIAL COMPRESSOR BEARING, AXIAL COMPRESSOR BLADES AND DIFFUSER BLADES. TWO SECTIONS OF THE NO.3 STATOR BLADE WERE EXAMINED AND REVEALED SURFACE MARKINGS INDICATIVE OF FATIGUE.
Flight
Event TypeAccident
Event Time15:30 MDT
Nearest Airport0nm N
Runway0
Runway Length0
Runway Width0
Flight Plan FiledNone
Aircraft FireBoth
Aircraft ExplosionBoth
Aircraft
AircraftAerospatiale SA-315B
Tail NumberN10067
Aircraft CategoryHeli
DamageDestroyed
OperatorBlain Sales
Operating RulePart 133
Engines1
Engine TypeTurboshaft
Engine DetailsTurbo-Meca · ARTOUSTE IIIB · Turboshaft · 562
Seats5
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 37 · First Class
Conditions
ConditionsVMC
LightDaylight
WindCalm
Visibility20 sm
CeilingNone
Temperature / Dew Point46 / 0 C
Altimeter0