ANC99LA036 · Eurocopter AS-350-B2
Eurocopter AS-350-B2 · Accident: in flight encounter with weather during landing
From Girdwood-Alyeska Airport (AQY) to an unrecorded destination
Event
- NTSB case
- ANC99LA036
- Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
- Accident
- InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
- Completed
- API-reported fatalities
- 0 · all aircraft and ground
- Ground fatalities
- 0
- OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
- Charter & commuter
- WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
- Visual Meteorological Cond
Eurocopter AS-350-B2
- Aircraft type
- Eurocopter AS-350
- Category
- Helicopter
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- N197EH
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Girdwood-Alyeska Airport (AQY), AKTo not recorded
- Aircraft age
- Not recorded
- Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
- Part 135: Air Taxi & Commuter
- Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
- Landing
- First occurrenceThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
- In flight encounter with weather
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Substantial
Cause areas
- Pilot in command › Flare, misjudged
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The commercial pilot reported that the accident helicopter was being utilized to transport skiers to a remote ski area. He added that the day before the accident, the area had received about 6 inches of very light, powder snow. He stated that just before the accident, he transported a group of photographers to the top of the mountain, and he was returning to the base of the mountain to pick up the next group of skiers. He said that as the helicopter hovered toward the landing area, he became disoriented in whiteout conditions, and lost all visual reference due to blowing snow. He said the helicopter drifted to the right, the right skid struck the snow, and the helicopter rolled onto its right side. The helicopter sustained substantial damage to the fuselage, tail boom, and drive train components.
Probable cause
The pilot's misjudged flare while landing. Factors associated with the accident were whiteout conditions, and snow-covered terrain.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record ANC99LA036
- Event ID
- 20001205X00252
- Case number
- ANC99LA036
- Dataset
- historical-pre2008
- Source SHA-256
- 89e2df6d848e7ab3b42e7d7c7a03ff403303057a26ca04c95b3ea67201c3ce74
Source notes (4)
- Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
- Filled from the NTSB case API where the bulk record had no value: investigation status. Values present in the bulk record are kept.
- The date is the local date, which is the same as the UTC date the NTSB stores.
- API snapshot SHA-256: 1232508cf6295db46a8ac50474b688bf4a012b8f4a08151635ece3340f8e17e1; retrieved 2026-09-18T16:58:09.384Z.