NTSB Identification: LAX86LA113.
The docket is stored on NTSB microfiche number 31182.
Accident occurred Friday, February 07, 1986 in LODI, CA
Aircraft: HILLER UH-12E, registration: N62421
Injuries: 1 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.

WHILE ON AN AERIAL AGRICULTURAL SPRAYING FLIGHT THE ACFT ENGINE LOST TOTAL POWER. THE PLT EXECUTED AN IMMEDIATE AUTOROTATION LANDING. UPON GROUND CONTACT, THE ACFT SKID FOR ABOUT 8 FT UNTIL THE FRONT SKID CONTACTED THE GROUND FURROW AND NOSED OVER CAUSING THE MAIN ROTOR BLADE TO CONTACT THE GROUND AND TAIL BOOM ASSEMBLY. THE PILOT REPORTED THAT HE HAD ABOUT 10 - 12 GALLONS ABOARD FOR THE 5 MINUTE FLIGHT AND THAT HE BELIEVED THE FUEL PUMP BYPASS VALVE MALFUNCTIONED CAUSING THE FUEL TO BE 'DUMPED OVERBOARD' VIA THE SYSTEM DRAIN VALVE. INVESTIGATION REVEALED THAT THE ACFT CONTAINED LESS THAN 1/2 PT OF FUEL. THE ENGINE WAS FUNCTIONALLY TESTED AND IT OPERATED NORMALLY.

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

FLUID,FUEL..EXHAUSTION

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

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

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

FUEL CONSUMPTION CALCULATIONS..INADEQUATE..PILOT IN COMMAND

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

REFUELING..NOT PERFORMED..PILOT IN COMMAND


Contributing Factors

TERRAIN CONDITION..ROUGH/UNEVEN

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