NTSB Identification: LAX85FA132.
The docket is stored on NTSB microfiche number 29310.
Accident occurred Sunday, February 03, 1985 in FIVE POINTS, CA
Aircraft: HILLER UH12E, registration: N5323V
Injuries: 1 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.

WHILE PERFORMING AN AG FLIGHT THE HELICOPTER'S ENGIN SUDDENLY LOST POWER. AT THE TIME THE AIRCRAFT WAS NEAR ITS MAX ALLOWABLE GROSS WEIGHT AND IT WAS BETWEEN 3-5FT AGL. AS THE AIRCRAFT YAWED LEFT AND DESCENDED.THE PILOT IN COMMAND ATTEMPTED TO LAND ON A SMALL DIRT ROAD. THE PILOT INCOMMAND MISSED THE ROAD, COLLIDED WITH THE EMBANKMENT OF OF A CANAL AND THE AIRCRAFT ROLLED OVER. EXAMINATION OF THE ENGINE REVEALED THAT THE ROD BOLTS TO THE #1 CON ROD WERE BROKEN. ONE OF THE NUTS HAD BACKED OFF FROM THE ROD BOLT. EXAMINATION OF THE BOLTS IN THE OTHER 5 CYLINDERS DISCLOSED THAT NONE OF THEM HAD BEEN TIGHTENED IN ACCORDANCE WITH MANUFACTURER'S OVERHAUL SPECIFICATIONS. THE AIRCRAFT'S OWNER PERFORMED THE LAST MOH ON THE ENGINE 907 HOURS PRIOR TO THE ACCIDENT.

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

ENGINE ASSEMBLY,OTHER..UNDERTORQUED

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

EMERGENCY PROCEDURE..ATTEMPTED..PILOT IN COMMAND

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

ALTITUDE..INADEQUATE..PILOT IN COMMAND

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

PROPER TOUCHDOWN POINT..NOT POSSIBLE..PILOT IN COMMAND



Contributing Factors

MAINTENANCE,OVERHAUL..IMPROPER..OTHER MAINTENANCE PERSONNEL

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