NTSB Identification: LAX85LA249.
The docket is stored on NTSB microfiche number 27943.
Accident occurred Thursday, May 09, 1985 in CASA GRANDE, AZ
Aircraft: HILLER 12-C, registration: N38767
Injuries: 2 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 PLT WAS DEMONSTRATING AUTOROTATIONS TO A TOUCHDOWN ON A DIRT RWY INTO A 5 KT HEADWIND. ON THE FINAL LANDING HE SAID THAT THE TOUCHDOWN FELT THE SAME AS OTHERS HE HAD DONE.SPEED AT TOUCHDOWN WAS 15 MPH AND THE HELICOPTER SLID FORWARD IN A STRAIGHT LINE FOR A DISTANCE OF ABOUT 3 HELICOPTER LENGHTS. AS IT CAME TO A STOP THE LEFT SIDE OF THE FORWARD CROSSOVER TUBE FAILED, THE LEFT SKID COLLAPSED, AND A MAIN ROTOR BLADE STRUCK THE TAIL BOOM.

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

JUDGMENT..POOR..PILOT IN COMMAND


Contributing Factors

LANDING GEAR,SKID ASSEMBLY..FAILURE,PARTIAL


Contributing Factors

MISC ROTORCRAFT,TAIL BOOM..PENETRATED


Contributing Factors

LANDING GEAR,SKID ASSEMBLY..OVERLOAD

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