NTSB Identification: LAX83FA179.
The docket is stored on NTSB microfiche number 22777.
Accident occurred Monday, April 04, 1983 in RED ROCK, AZ
Aircraft: BELL 206L-1, registration: N302PS
Injuries: 6 Uninjured.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

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.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

REASON FOR OCCURRENCE UNDETERMINED


Contributing Factors

OBJECT..TREE(S)


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