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NTSB Report
August 22, 2025 · Eurocopter AS 350 B2 · N149TH
Juneau, AK
Overview
Report Status
Probable Cause
Event Type
Accident
Date
August 22, 2025
Injury Outcomes
No injuries (1 uninjured)
Location
Juneau, AK
Aircraft
Eurocopter AS 350 B2 (2005)
Tail Number
N149TH
Operator
Temsco Helicopters
Injuries
None
Aircraft Damage
Substantial
NTSB Number
ANC25LA092
The pilot reported that, while departing from a remote, snow-covered, glacier camp, which required a hovering backwards departure from a helipad site, the helicopter’s vertical stabilizer struck a snow berm, resulting in substantial damage to the vertical stabilizer and tail boom assembly. The pilot reported that there were no preaccident mechanical failures or malfunctions with the helicopter that would have precluded normal operation. The pilot noted that flat light conditions made it difficult to discern the height of the helicopter over the uneven, snow-covered terrain immediately surrounding the helipad site.
NTSB Probable Cause
The pilot’s failure to maintain adequate obstacle clearance during takeoff from uneven, snow-covered terrain in flat light conditions.
Full Narrative
The pilot reported that, while departing from a remote, snow-covered, glacier camp, which required a hovering backwards departure from a helipad site, the helicopter’s vertical stabilizer struck a snow berm, resulting in substantial damage to the vertical stabilizer and tail boom assembly. The pilot reported that there were no preaccident mechanical failures or malfunctions with the helicopter that would have precluded normal operation. The pilot noted that flat light conditions made it difficult to discern the height of the helicopter over the uneven, snow-covered terrain immediately surrounding the helipad site.
Flight
Event TypeAccident
Event Time12:42 AKDT
Nearest AirportGLACIER (0nm)
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftEurocopter AS 350 B2
Tail NumberN149TH
Aircraft CategoryHeli
DamageSubstantial
OperatorTemsco Helicopters
Operating RulePart 91
Engines1
Engine TypeTurboshaft
Engine DetailsTurbomecca · Aeriel 1D1 · Turboshaft · 732
Seats7
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 24 · Second Class · None
Conditions
ConditionsVMC
LightDaylight
WindCalm
Visibility10 sm
CeilingBroken clouds 7500 ft
Temperature / Dew Point61 F / 52 F
Altimeter30.20 inHg
Observation Time12:53
Weather SourceWFAC