NTSB Identification: LAX83FA096.
The docket is stored on NTSB microfiche number 33746.
Accident occurred Wednesday, February 09, 1983 in PACOIMA, CA
Aircraft: AEROSPATIALE AS 350 ASTAR, registration: N3605T
Injuries: 4 Uninjured.

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 MAIN ROTOR BLADES SEPARATED THE TAIL BOOM DURING A FORCED LANDING FOLLOWING A TOTAL LOSS OF POWER. THE PLT STATED THE ACFT WAS EQUIPPED WITH AN EXPERIMENTAL ENGINE TORQUE AND TEMPERATURE LIMITING DEVICE AND THIS FLT WAS TO COLLECT DATA CONCERNING ITS OPERATION. THIS DEVICE MALFUNCTIONED AND AN UNCOMMANDED ENGINE SHUTDOWN OCCURRED AT 800 FT AGL. THE ACFT LANDED HARD ON THE SKID HEEL, ROCKED FORWARDED AND CAME TO REST UPRIGHT AFTER TRAVELING 105 FT.

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

TORQUEMETER SYSTEM..FAILURE,PARTIAL

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