NTSB Identification: LAX83FA287.
The docket is stored on NTSB microfiche number 23221.
Accident occurred Tuesday, June 14, 1983 in TEMECULA, CA
Aircraft: BELL 206B, registration: N5754M
Injuries: 5 Minor.

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.

THE PLT TOOK OFF ON A DEMONSTRATION FLT TO FAMILIARIZE THE PASSENGERS WITH THE HELICOPTER. HE REPORTED THAT AFTER TAKEOFF, HE PROCEEDED NORTHEAST AT ABOUT 100 TO 150 FT AGL & 80 KTS IN WIND THAT WAS FROM THE WEST AT 25 GUSTING 30 KTS. AFTER TRAVELING ABOUT 3 MI, HE TURNED LEFT TOWARD A WESTERLY DIRECTION, USING APRX A 30 DEG BANK. HE STATED THAT JUST PRIOR TO ROLLING OUT OF THE TURN, THE HELICOPTER STARTED TO RAPIDLY LOSE ALT & THE FORWARD & AFT CYCLIC CONTROL WOULD NOT RESPOND TO HIS IMPUTS. SUBSEQUENTLY, THE HELICOPTER IMPACTED THE GROUND. HE BELIEVED THAT THE WIND HAD SHIFT & THE HELICOPTER MAY HAVE TURNED DOWNWIND & BEGAN SETTING WITH POWER. ACCORDING TO A PASSENGER, WHEN THE HELICOPTER WAS IN THE TURN TO THE WEST, HE FELT A THUMP, THE ACFT BEGAN CLIMBING, THEN WENT INTO A 360 DEG SPIN TO THE RIGHT. NO PREIMPACT/PART FAILURE OR MALFUNCTION WAS FOUND. THE 3 SERVO ACTUATORS WERE TESTED & ALL 3 FUNCTIONED PROPERLY. LOCAL PLTS REPORTED THE WINDS WERE OFTEN UNPREDICTABLE DUE TO ROLLING HILLS IN THE AREA.

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

PROPER ALTITUDE..NOT MAINTAINED..PILOT IN COMMAND


Contributing Factors

TERRAIN CONDITION..MOUNTAINOUS/HILLY


Contributing Factors

WEATHER CONDITION..UNFAVORABLE WIND

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