SALUDA, SC, USA
N8773F
HUGHES 269A
IMMEDIATELY AFTER LIFT-OFF TO A HOVER THE HELICOPTER ROLLED RIGHT. LEFT CYCLIC WAS APPLIED BY THE INSTRUCTOR WHO REALIZED THAT THE PILOT UNDER INSTRUCTION WAS ALSO APPLYING LEFT CYCLIC. AS THE HELICOPTER CONTINUED TO ROLL RIGHT THE INSTRUCTOR LOWERED THE COLLECTIVE. HOWEVER THE HELICOPTER CONTINUED ROLLING UNTIL THE MAIN ROTOR BLADES STRUCK THE GROUND AND THE MAIN ROTOR HEAD SEPARATED. THE INSTRUCTOR SAID THE FLIGHT CONTROLS HAD FEEL AND THERE WERE NO UNUSUAL VIBRATIONS. THE FRACTURED MAIN ROTOR MAST HAD EXCESSIVE POROSITY BUT FAILED IN OVERLOAD. A GOUGE WAS FOUND IN THE GROUND INDICATING THAT THE RIGHT SKID REAR TIP DRAGGED DURING THE LIFT-OFF AND PRECIPITATED THE DYNAMIC ROLL OVER.
STUDENT PILOT'S IMPROPER USE OF THE FLIGHT CONTROLS DURING LIFT-OFF AND INADEQUATE SUPERVISION BY THE FLIGHT INSTRUCTOR.
Source: NTSB Aviation Accident Database
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