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NTSB Report
June 3, 1984 · Aerospatiale SA316B · N4997A
Alcova, WY
Overview
Report Status
Preliminary report
Event Type
Accident
Date
June 3, 1984
Injury Outcomes
No injuries (1 uninjured)
Location
Alcova, WY
Aircraft
Aerospatiale SA316B
Tail Number
N4997A
Operator
Evergreen Helicopters
Injuries
None
Aircraft Damage
Substantial
NTSB Number
DEN84LA168
PLT STATED THAT THE APPROACH AND LANDING WERE NORMAL UNTIL GROUND RESONANCE STARTED AND THE BRAKES DID NOT HOLD. THE PLT ATTEMPTED TO PICK BACK UP TO A HOVER TO REPOSITION, BUT LOST DIRECTIONAL CONTROL. THE ACFT YAWED AND ROLLED TO THE LEFT ON NOSE. THE PLT STATED THAT HE 'WOULD PREFER TO BE ABLE TO FLY THE ALOUETTE III MORE OFTEN FOR PROFICIENCY.' THE ALOUETTE III MAIN ROTOR BLADES ROTATE IN THE OPPOSITE DIRECTION OF AMERICAN MANUFACTURED HELICOPTERS. THE PLT HAS LOGGED 8784 HRS IN AMERICAN MADE HELICOPTERS AND 20 HRS IN THE AEROSPATIALE HELICOPTERS.
Full Narrative
PLT STATED THAT THE APPROACH AND LANDING WERE NORMAL UNTIL GROUND RESONANCE STARTED AND THE BRAKES DID NOT HOLD. THE PLT ATTEMPTED TO PICK BACK UP TO A HOVER TO REPOSITION, BUT LOST DIRECTIONAL CONTROL. THE ACFT YAWED AND ROLLED TO THE LEFT ON NOSE. THE PLT STATED THAT HE 'WOULD PREFER TO BE ABLE TO FLY THE ALOUETTE III MORE OFTEN FOR PROFICIENCY.' THE ALOUETTE III MAIN ROTOR BLADES ROTATE IN THE OPPOSITE DIRECTION OF AMERICAN MANUFACTURED HELICOPTERS. THE PLT HAS LOGGED 8784 HRS IN AMERICAN MADE HELICOPTERS AND 20 HRS IN THE AEROSPATIALE HELICOPTERS.
Flight
Event TypeAccident
Event Time17:00 MDT
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftAerospatiale SA316B
Tail NumberN4997A
Aircraft CategoryHeli
DamageSubstantial
OperatorEvergreen Helicopters
Operating RulePart 135
Engines1
Engine TypeTurboshaft
Engine DetailsTurbomeca · ARTOUSTE III · Turboshaft · 690
Seats7
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 39 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind220° @ 5 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point50 / 0 C
Altimeter0
Weather SourcePILO