ASN Wikibase Occurrence # 43004
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| Date: | Monday 22 July 1991 |
| Time: | 16:25 LT |
| Type: |  Bell 206B JetRanger |
| Owner/operator: | Intermountain Air Service |
| Registration: | N276KA |
| MSN: | 1949 |
| Year of manufacture: | 1976 |
| Engine model: | ALLISON 250-C20 |
| Fatalities: | Fatalities: 1 / Occupants: 5 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Toutle, Cowlitz County, Washington -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Unknown |
| Departure airport: | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
DURING A LOCAL SIGHT-SEEING FLIGHT, THE PILOT INITIATED A RIGHT DESCENDING TURN TO VIEW A HERD OF ELK NEAR A DRY RIVER BED. THE PASSENGERS STATED THAT THE FIRST TURN WAS NORMAL; HOWEVER, THE HELICOPTER CONTINUED TO TURN WHICH ACCELERATED WITH EACH ROTATION UNTIL THE HELICOPTER COLLIDED INTO THE DRY RIVER BED.
Probable Cause: FAILURE OF THE PILOT TO MAINTAIN AIRSPEED AND CORRECT FOR THE RIGHT YAWING CONDITION. FACTORS TO THE ACCIDENT WERE: INADEQUATE COMPENSATION FOR WIND CONDITIONS, DIVERTED ATTENTION, AND LACK OF TOTAL EXPEREINCE IN TYPE OF AIRCRAFT.
Accident investigation:
 |
|
Sources:
NTSB SEA91FA184
FAA register: 2. FAA: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?omni=Home-N-Number&nNumberTxt=276KA
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 19-Apr-2016 00:40 | Dr.John Smith | Updated [Time, Location, Nature, Departure airport, Destination airport, Source, Damage, Narrative] |
| 19-Apr-2016 00:40 | Dr.John Smith | Updated [Narrative] |
| 21-Dec-2016 19:24 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 11-Apr-2024 13:38 | ASN Update Bot | Updated [Time, Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative, Category, Accident report] |
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