NTSB Identification: LAX85LA045.
The docket is stored on NTSB microfiche number 26604.
Accident occurred Friday, November 09, 1984 in INVERNESS, CA
Aircraft: BELL 206B, registration: N2917W
Injuries: 4 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

AN AUTOROTATION WAS INITIATED AT ABOUT 300 FT AS ENG AND ROTOR RPM BEGAN TO DECREASE. TOUCHDOWN OCCURRED IN SOFT SAND WITH SOME FORWARD MOTION. FULL AFT CYCLIC WAS APPLIED CAUSING THE MAIN ROTOR TO CONTACT THE TAILBOOM. EXAM OF THE ACFT FUEL SYSTEM REVEALED APRX 2/3 QUART OF WATER IN THE FUEL FILTER AND A SUBSTANTIAL AMOUNT OF WATER IN THE FUEL PUMP. ABOUT 1/2 GAL OF WATER WAS CONTAINED IN THE FUEL DRUM FROM WHCH THE HELICOPTER HAD JUST BEEN SERVICED.

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

FLUID,FUEL..CONTAMINATION

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

MAINTENANCE,SERVICE OF AIRCRAFT/EQUIPMENT..IMPROPER..OTHER MAINTENANCE PERSONNEL




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