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NTSB Report
January 9, 2021 · Hughes 369D · N8612F
Winthrop, WA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
January 9, 2021
Injury Outcomes
No injuries (2 uninjured)
Location
Winthrop, WA
Aircraft
Hughes 369D (1977)
Tail Number
N8612F
Injuries
None
Aircraft Damage
Substantial
NTSB Number
WPR21LA084
The pilot reported that, while landing in a snow-covered, unimproved landing zone, the helicopter drifted rearward, the tail rotor struck a snowbank, and the helicopter began to spin to the right. The pilot reduced the throttle setting to off and applied left pedal to reduce the spin, but the helicopter drifted to the right and the right skid impacted snow. The helicopter subsequently rolled over and impacted terrain. The tailboom and the main and tail rotor drive systems were substantially damaged. The pilot reported that there were no preaccident mechanical failures or malfunctions with the helicopter that would have precluded normal operation.
NTSB Probable Cause
The pilot’s failure to adequately monitor the environment which resulted in a collision with a snowbank and subsequent loss of control.
Full Narrative
The pilot reported that, while landing in a snow-covered, unimproved landing zone, the helicopter drifted rearward, the tail rotor struck a snowbank, and the helicopter began to spin to the right. The pilot reduced the throttle setting to off and applied left pedal to reduce the spin, but the helicopter drifted to the right and the right skid impacted snow. The helicopter subsequently rolled over and impacted terrain. The tailboom and the main and tail rotor drive systems were substantially damaged. The pilot reported that there were no preaccident mechanical failures or malfunctions with the helicopter that would have precluded normal operation.
Flight
Event TypeAccident
Event Time12:30 PST
Nearest AirportMethow Valley State (3nm NW)
Flight Plan FiledVFR
Flight Plan ActivatedNo
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftHughes 369D
Tail NumberN8612F
Aircraft CategoryHeli
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeTurboshaft
Engine DetailsAllison · 250-C20R · Turboshaft · 250
Seats4
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 60 · Second Class · None
Crew 2None
Conditions
ConditionsVMC
LightDaylight
WindCalm
Visibility10 sm
CeilingOvercast 3000 ft
Temperature / Dew Point36 C / 20 C
Altimeter30.32 inHg
Observation Time10:00