ASN Wikibase Occurrence # 382282
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| Date: | Monday 4 April 1983 |
| Time: | 15:30 LT |
| Type: |  Bell 206L-1 |
| Owner/operator: | Arizona Public Service |
| Registration: | N302PS |
| MSN: | 45731 |
| Year of manufacture: | 1981 |
| Total airframe hrs: | 672 hours |
| Engine model: | Allison 250-C28B |
| Fatalities: | Fatalities: 0 / Occupants: 6 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Red Rock, AZ -
 United States of America
|
| Phase: | Approach |
| Nature: | Survey |
| Departure airport: | Farmington, NM |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
REPORTEDLY, THE PLT ELECTED TO LAND IN A MOUNTAINOUS AREA IN CALM WIND CONDITIONS. AT AN ESTIMATED DISTANCE OF 350 FT & AN ALT OF APRX 75 FT ABOVE THE TOUCHDOWN ZONE, THE NOSE OF THE HELICOPTER BEGAN A GRADUAL LEFT TURN AS THE PLT APPLIED COLLECTIVE PITCH. AT ABOUT THE SAME TIME, HE NOTED THAT THE TURBINE OUTLET TEMP (TOT) WAS RISING & THE MAIN ROTOR RPM WAS DECAYING. THERE WAS A DEEP GORGE AHEAD, SO HE MADE A LEFT CYCLIC TURN & LOWERED THE COLLECTIVE IN AN ATTEMPT TO REACH A CLEARING. AS HE ATTEMPTED TO STABILIZE THE HELICOPTER, IT STARTED TO ROTATE TO THE RIGHT & THE ROTOR LOW RPM WARNING LIGHT CAME ON. SUBSEQUENTLY, THE HELICOPTER SETTLED INTO A JUNIPER TREE & ROLLED OVER ONTO ITS SIDE. THE AIR TEMP & ELEVATION OF THE CRASH SITE WERE 24 DEG FAHRENHEIT & 7150 FT, RESPECTIVELY. A FUNCTIONAL TEST OF THE ENG REVEALED THAT IT WOULD OPERATE WITHIN ITS LIMITS. THE CONTROL CONTINUITY COULD NOT BE ESTIMATED DUE TO SEPARATION OF THE TAIL BOOM PUSH-PULL TUBE. REPORTEDLY, THE MAIN ROTOR & ENG RPM NEEDLES HAD REMAINED JOINED.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB LAX83FA179
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 02-Apr-2024 12:11 | ASN Update Bot | Added |
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