ASN Wikibase Occurrence # 290071
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| Date: | Tuesday 30 April 2013 |
| Time: | 15:30 LT |
| Type: |  Bell 206L-1 |
| Owner/operator: | Pathfinder Aviation |
| Registration: | N1171 |
| MSN: | 45234 |
| Year of manufacture: | 1979 |
| Total airframe hrs: | 29902 hours |
| Engine model: | Rolls Royce C30P |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Anaktuvuk Pass, Alaska -
 United States of America
|
| Phase: | Landing |
| Nature: | Unknown |
| Departure airport: | Kuparik River, AK |
| Umiat Airport, AK (UMT/PAUM) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The commercial helicopter pilot reported that while flying over an area of flat and featureless, snow-covered terrain, deteriorating weather conditions with low ceilings, light snow, and flat light conditions reduced his visibility, so he elected to make a precautionary landing to wait for improved visibility. He said that while attempting to land, blowing snow from the main rotor downwash reduced his ability to discern topographical features on the snow-covered terrain. During touchdown, the helicopter drifted to the left, the left skid struck the snow-covered terrain, and the helicopter rolled onto its left side. The helicopter sustained substantial damage to the rotor system, tail boom, and fuselage. The operator reported that there were no preaccident mechanical malfunctions or anomalies that would have precluded normal operation.
Probable Cause: The pilot's failure to maintain lateral control while hovering over an area of snow-covered terrain, in flat light conditions, which resulted in a dynamic rollover.
Accident investigation:
 |
|
Sources:
NTSB ANC13CA041
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 06-Oct-2022 07:50 | ASN Update Bot | Added |
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