NTSB Identification: LAX85MA012.
The docket is stored on NTSB microfiche number 27314.
Accident occurred Wednesday, October 10, 1984 in RIVERSIDE, CA
Aircraft: BELL 206B, registration: N3U
Injuries: 3 Fatal.

NTSB investigators traveled in support of this investigation and used data obtained from various sources to prepare this aircraft accident report.

THE ACFT DEPARTED FULLERTON, CA (ELEV 96') AT O958 PDT ON A FLT TO BIG BEAR, CA (ELEV 6750'). THERE WAS NO RECORD OF THE PLT OBTAINING A WX BRIEFING. AT APRX 1015, A WITNESS HEARD THE HELICOPTER CIRCLING ABOVE THE BOTTOM OF 'AN EARLY MORNING FOG HANGING OVER THE GROUND AT APRX 300 FT.' AFTER CIRCLING ABOUT 3 TO 5 MIN, THE HELICOPTER BEGAN TO FLY SOUTH WHEN IT SUDDENLY WAS OBSERVED FLYING OUT OF THE FOG AT A STEEP ANGLE TOWARD THE GROUND. IT WAS ANGLED NOSE DOWN WITH A SLIGHT ROLL TO THE LEFT. SUBSEQUENTLY, THE HELICOPTER CRASHED IN A TAIL LOW, LEFT BANK ATTITUDE. THE ENG WAS REPORTED TO BE OPERATING AT A HI POWER SETTING UNTIL THE HELICPOTER CRASHED & BURNED. NO PREIMPACT PART FAILURE OR MALFUNCTION WAS FOUND. THERE WAS EVIDENCE OF LOW ROTOR RPM, THAT THE CYCLIC CONTROL WAS FULL AFT & THAT THE COLLECTIVE WAS FULL DOWN AT IMPACT. APRX 4 MI EAST, THE 1019 WX WAS, IN PART: SKY PARTIALLY OBSCURED, 1000' OVERCAST, VISIBILITY 3/4 MI WITH FOG.

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

AIRCRAFT HANDLING..NOT MAINTAINED..PILOT IN COMMAND

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

SPATIAL DISORIENTATION..PILOT IN COMMAND

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

VFR FLIGHT INTO IMC..CONTINUED..PILOT IN COMMAND


Contributing Factors

PREFLIGHT PLANNING/PREPARATION..INADEQUATE..PILOT IN COMMAND


Contributing Factors

WEATHER CONDITION..CLOUDS


Contributing Factors

WEATHER CONDITION..LOW CEILING



Contributing Factors

WEATHER CONDITION..FOG


Contributing Factors

WEATHER CONDITION..OBSCURATION


Contributing Factors

OVERCONFIDENCE IN PERSONAL ABILITY..PILOT IN COMMAND

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