RIALTO, CA, USA
N7456F
HUGHES 269C
WHILE HOVERING, THE INSTRUCTOR PILOT LOST CONTROL OF THE HELICOPTER BY ALLOWING THE STUDENT PILOT TO OVERCORRECT THE CONTROLS AND BY NOT TAKING IMMEDIATE CORRECTIVE ACTION. AFTER HE RECOGNIZED THE DETERIORATING CONDITION, HE TRIED TO RECOVER A GROUND RESONANCE PROBLEM. SHORTLY AFTERWARD, THE HELICOPTER ROLLED OVER ON ITS SIDE. NO PRIOR MECHANICAL PROBLEM WAS REPORTED.
THE LACK OF ADEQUATE SUPERVISION BY THE INSTRUCTOR PILOT DURING A CRITICAL PHASE OF FLIGHT WHEN HE ALLOWED A STUDENT TO PERFORM IN AN UNSAFE MANNER WITHOUT TAKING IMMEDIATE CORRECTIVE ACTION.
Source: NTSB Aviation Accident Database
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