ASN Wikibase Occurrence # 367444
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| Date: | Sunday 4 February 1990 |
| Time: | 12:30 LT |
| Type: |  Bell 206B |
| Owner/operator: | Cascade Helicopters |
| Registration: | N49573 |
| MSN: | 1665 |
| Year of manufacture: | 1975 |
| Total airframe hrs: | 5309 hours |
| Engine model: | Allison 250-C20B |
| Fatalities: | Fatalities: 0 / Occupants: 4 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Winthrop, WA -
 United States of America
|
| Phase: | Landing |
| Nature: | Unknown |
| Departure airport: | Mazama, WA |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
DURING A LOCAL FLIGHT TO TRANSPORT SKIERS TO A MOUNTAIN, THE PILOT INITIATED A DESCENT FOR LANDING. WHEN APPROXIMATELY 30 FT AGL, DESCENT WAS TERMINATED DUE TO LOSS OF VISIBILITY FROM BLOWING SNOW. WHEN THE SNOW SETTLED, DESCENT WAS CONTINUED. JUST PRIOR TO TOUCHDOWN, VISIBILITY WAS AGAIN REDUCED AND THE PILOT LOST HIS REFERENCE POINT. THE HELICOPTER TOUCHED DOWN LEFT SKID FIRST AND IMMEDIATELY ROLLED OVER.
Probable Cause: WATER CONTAMINATION OF THE FUEL AND THE PILOT'S INADEQUATE PREFLIGHT OF THE AIRCRAFT. DARKNESS AND THE OBSTRUCTIONS IN THE EMERGENCY LANDING AREA WERE RELATED FACTORS.
Accident investigation:
 |
|
Sources:
NTSB SEA90LA040
History of this aircraft
Other occurrences involving this aircraft
| 8 June 2000 | N49573 | Cascade Helicopters | 0 | near Bridgeport, Washington | |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 22-Mar-2024 14:33 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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