ASN Wikibase Occurrence # 381029
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| Date: | Friday 26 August 1983 |
| Time: | 16:30 LT |
| Type: |  Bell 206L-1 |
| Owner/operator: | Air Services Intnl |
| Registration: | N3900B |
| MSN: | 45609 |
| Year of manufacture: | 1981 |
| Total airframe hrs: | 802 hours |
| Engine model: | Allison 250-C30P |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Tucker, UT -
 United States of America
|
| Phase: | Approach |
| Nature: | Ferry/positioning |
| Departure airport: | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE HELICOPTER WAS BEING USED ON A SEISMIC DATA ACQUISTION OPERATION. WHILE LANDING BY A ROAD IN MOUNTAINOUS TERRAIN AT AN ELEVATION OF APRX 8400 FT, THE HELICOPTER WAS OBSERVED TO APPROACH TO A HOVER OVER THE ROADWAY. A CONSIDERABLE AMOUNT OF DUST WAS BLOWN FROM THE ROTOR DOWNWASH CAUSING PERSONNEL ON THE GROUND TO COVER THEIR EYES & LOOK AWAY. THE HELICOPTER WAS NEXT OBSERVED TO PULL UP & AWAY FROM THE GROUND PERSONNEL, THEN MOVE UP THE HILL (BESIDE THE ROAD) & TURN RIGHT TO FACE THE HILLSIDE. GROUND PERSONNEL REPORTED THAT IT THEN MADE AN UNUSUAL NOISE, SPUN AROUND, BEGAN TO WHIP BACK & FORTH, THEN DESCENDED INTO TREES IN AN UNCONTROLLED MANNER. AFTER IMPACT, IT ROLLED DOWN THE HILLSIDE & CAMETO REST AT THE ROAD. THE PLT WAS INJURED & COULD NOT REMEMBER THE OCCURRENCE. GROUND PERSONNEL THOUGHT THE ENG LOST POWER, BUT NO PREIMPACT FAILURE WAS FOUND. SEVERAL CIRCUIT BREAKERS WERE 'OUT' BUT 2 OF THEM (BOOST PUMP) WOULD NORMALLYHAVE BEEN PULLED AFTER LANDING. WIND FROM SOUTH, 10 KTS. WITNESS SAID, GUST BLEW DUST BACK TOWARD ACFT, WHILE HOVERING.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB DEN83LA200
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 01-Apr-2024 23:04 | ASN Update Bot | Added |
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