ASN Wikibase Occurrence # 34460
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| Date: | Friday 10 October 2008 |
| Time: | 10:30 |
| Type: |  Bell 206B JetRanger |
| Owner/operator: | Northwest Helicopters |
| Registration: | N206CH |
| MSN: | 1735 |
| Year of manufacture: | 1975 |
| Total airframe hrs: | 12242 hours |
| Engine model: | Rolls Royce 250-C20B |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Olympia, WA -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | External load operation |
| Departure airport: | Olympia, WA (KOLM) |
| Cougar, WA | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
Soon after the helicopter lifted an external load of tree branches and began to fly an uphill route to the central collection point, the long-line became tangled in the trees below the flightpath. As the pilot attempted to continue up the hill toward a landing site, the helicopter's low-rotor rpm horn sounded, and soon thereafter its nose pitched down, and it impacted the ground near the bottom of a steep ravine. Although the long-line was not attached to the helicopter when it crashed, its proximity to the accident site indicated that it was released shortly before the impact. Neither the on-site or the follow-up inspection of the helicopter revealed any evidence of an anomaly in the airframe, engine, or flight control system.
Probable Cause: The pilot's failure to maintain clearance between his external load and trees while maneuvering. Contributing to the accident were hilly terrain and trees.
Accident investigation:
 |
|
Sources:
NTSB
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 01-Aug-2015 19:32 | TB | Updated [Plane category] |
| 03-Dec-2017 12:09 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative] |
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