NTSB Identification: FTW85LA288.
The docket is stored on NTSB microfiche number 29607.
Accident occurred Tuesday, July 16, 1985 in CRANE, TX
Aircraft: BELL 47G-5, registration: N8197J
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.

THE HELICOPTER WAS BEING OPERATED FROM A FLAT BED TRAILER. THE PLT STATED HE HAD LIFTED TO A 3 FOOT HOVER WHEN THE ENG STOPPED. THE HELICOPTER SUDDENLY ROTATED ABOUT 45 DEGS BEFORE HE COULD STOP IT. THE PLT ATTEMPTED TO MAKE AN AUTOROTATION TOUCHDOWN BUT WAS STILL PARTIALLY OVER THE TRAILER. THE REAR PORTION OF THE RIGHT SKID CONTACTED THE EDGE OF THE TRAILER, AND THE HELICOPTER ROLLED TO THE LEFT. THE MAIN ROTOR BLADES CONTACTED THE GROUND WHICH RESULTED IN DESTRUCTION OF THE HELICOPTER AS THEY CONTINUED TO ROTATE. THE CAUSE OF THE ENG FAILURE WAS NOT DETERMINED.

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

REASON FOR OCCURRENCE UNDETERMINED

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