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NTSB Report
April 15, 1982 · Aerospatiale SA315B · N48089
Thayne, WY
Overview
Report Status
Preliminary report
Event Type
Accident
Date
April 15, 1982
Injury Outcomes
1 injury (1 minor injury)
Location
Thayne, WY
Aircraft
Aerospatiale SA315B
Tail Number
N48089
Operator
Evergreen Helicopters
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
DEN82DA088
THE HELICOPTER WAS HOVERING TO PICK UP A SLING LOAD WHEN A LOUD BANG WAS HEARD AND THE AIRCRAFT BEGAN TO SPIN COUNTER CLOCKWISE. INVESTIGATION REVEALED THAT THE TAIL ROTOR DRIVE SHAFT HAD BROKEN. "EXAMINATION OF THE SHAFT BREAK DISCLOSED A SMALL FRACTURE REGION TYPICAL OF FATIGUE CRACKING."
Full Narrative
THE HELICOPTER WAS HOVERING TO PICK UP A SLING LOAD WHEN A LOUD BANG WAS HEARD AND THE AIRCRAFT BEGAN TO SPIN COUNTER CLOCKWISE. INVESTIGATION REVEALED THAT THE TAIL ROTOR DRIVE SHAFT HAD BROKEN. "EXAMINATION OF THE SHAFT BREAK DISCLOSED A SMALL FRACTURE REGION TYPICAL OF FATIGUE CRACKING."
Flight
Event TypeAccident
Event Time09:53 MST
Nearest Airport0nm N
Runway0
Runway Length0
Runway Width0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftAerospatiale SA315B
Tail NumberN48089
Aircraft CategoryHeli
DamageSubstantial
OperatorEvergreen Helicopters
Operating RulePart 133
Engines1
Engine TypeTurboshaft
Engine DetailsTurbo Meca · ARTOUSTE IIIB · Turboshaft · 562
Seats5
People & Injuries
Injury Summary1 injury (1 minor injury)
Fatal0
Serious0
Minor1
Uninjured0
Total1
Crew 1Age 29 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind270° @ 10 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter0