THE HELICOPTER WAS FLOWN TO THE SITE OF AN AUTO ACCIDENT TO TRANSPORT AN INJURED PERSON. AFTER LANDING, THE PATIENT WAS LOADED WITHOUT SHUTTING DOWN THE ENG. DUE TO THE POSITION OF POWER LINES, THE AIRCREW HAD TO DEPART IN THE OPPOSITE DIRECTION. WHILE PREPARING TO DEPART, THE PLT BROUGHT THE HELICOPTER TO A HOVER & BEGAN A PEDAL TURN. AS THE ACFT WAS TURNING, AN AMBULANCE DRIVER BEGAN BACKING HIS VEHICLE TOWARD THE HELICOPTER. THE PLT INSTINCTIVELY PULLED AFT ON THE CYCLIC. THIS RESULTED IN THE TAIL ROTOR CONTACTING A LOW ROAD BARRIER POST. THERE WAS A LOSS OF TAIL ROTOR EFFECTIVENESS, SO THE PLT RETARDED THE THROTTLE TO THE OFF POSITION & MADE A HOVER AUTOROTATION.

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

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

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

Contributing Factors

TERRAIN CONDITION..HIGH OBSTRUCTION(S)

Contributing Factors

OBJECT..VEHICLE

Contributing Factors

OBJECT..FENCE

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