ASN Wikibase Occurrence # 380144
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| Date: | Monday 30 January 1984 |
| Time: | 18:10 LT |
| Type: |  Bell 47G-3B-1 |
| Owner/operator: | Didericksen |
| Registration: | N90769 |
| MSN: | 2901 |
| Year of manufacture: | 1963 |
| Total airframe hrs: | 4829 hours |
| Engine model: | Lycoming TVO-435-B1A |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Ogden, UT -
 United States of America
|
| Phase: | En route |
| Nature: | Unknown |
| Departure airport: | Near Ogden, UT |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PLT TOOK OFF FROM A MOUNTAINOUS WORK SITE TO RETURN TO SALT LAKE CITY, UT. THE WX WAS CLEAR AT THE WORK SITE (ELEVATION 6700 FT), BUT THERE WAS FOG BELOW. AFTER ENCOUNTERING THE FOG, THE PLT HOVERED WITH A SLOW FORWARD SPEED OVER SNOW COVERED TERRAIN. A PASSENGER SAID THAT WHERE ROCKS PROTRUDED THRU THE SNOW, THEY PROVIDE A REFERENCE, THEN SUDDENLY THERE WERE NO ROCKS. AS THE HELICOPTER PROCEEDED OVER AN OPEN AREA, THE PLT LOST GROUND RECERENCES. HE SAID HE MAY HAVE EXPERIENCED VERTIGO BECAUSE HE THOUGHT HE WAS ABOUT ON THE GROUND WHEN THE HELICOPTER HIT & ROLLED OVER. THE ELEVATION AT THE CRASH SITE WAS ABOUT 5000 FT.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB DEN84LA079
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 01-Apr-2024 13:18 | ASN Update Bot | Added |
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