ANC25LA092

NTSB accident investigation · Eurocopter AS 350 B2 · Juneau, AK · August 22, 2025

Accident · No injuriesClass 4 · LimitedFinal report
Date
August 22, 2025, 12:42 local (20:42 UTC)
Place
Juneau, AK
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N149THEurocopter AS 350 B2
Defining event
Takeoff: Tailstrike
Weather
Visual (VMC) · Day
Status
Completed · report April 30, 2026
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Alaska Regional Office
Parties
FAA FSDO
FAA report
20250822010559A
Case key
200840

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The pilot’s failure to maintain adequate obstacle clearance during takeoff from uneven, snow-covered terrain in flat light conditions.

Findings · 4

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Terrain: snowy/icy terrainEnvironmental issues › Physical environment · Effect on operationEurocopter AS 350 B2: 2 casesAll aircraft: 77 casesProbable cause
Terrain: sloped/uneven terrainEnvironmental issues › Physical environment · Effect on operationEurocopter AS 350 B2: 1 caseAll aircraft: 270 casesProbable cause
Light condition: flat lightEnvironmental issues › Conditions/weather/phenomena · Effect on operationEurocopter AS 350 B2: 2 casesAll aircraft: 42 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

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.

Aircraft

Registration
N149TH
Reported as
Eurocopter AS 350 B2
Category
Helicopter
Serial number
9071
Built
2005
Airframe hours
7,666.6
Engine
Turbomecca Aeriel 1D1, 732 horsepower, turbo shaft
Damage
Substantial damage
Flight
Positioning · Part 91
Operator
Temsco Helicopters Inc
Registered owner
Temsco Helicopters Inc
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · August 1, 2025 · 64.4 hours before
Departed
JNU · Juneau, AK
Destination
JNU · Juneau, AK
Airport
NONE · Glacier
Equipment
ADS-B, Satellite tracking device

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
24
Injuries
None
Certificates
Commercial, Flight instructor
Instrument ratings
Helicopter
Medical
Class 2, Without waivers/limitations
Last flight review
March 21, 2025
Seat
Left
Restraint
4-point
Flight hours
1,987 total · 373 in this make and model · 1,950 as pilot in command · 197 in the last 90 days · 68 in the last 30 days · 0 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
7,500 ft broken
Temperature
61 °F, dew point 52 °F
Altimeter
30.20 inHg
Observed at
AJN, 12 nm away
METAR
PAJN 222053Z 00000KT 10SM > BKN075 OVC110 16/11 A3020 RMK AO2 SLP226 T01560106 58004

Docket · 2

The files NTSB released with the investigation on April 30, 2026, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.8 MB in all.

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.