EL CAJON, CA, USA
N4475
BELL 47G
DURING A DEMONSTRATION TO SHOW HIS STUDENT HOW TO AUTOROTATE FM A 2 FT HEIGHT AGL THE INSTRUCTOR REDUCED PWR AND INADVERTENTLY APPLIED FWD CYCLIC. THE FRONT PORTION OF THE SKIDS HIT THE GD FOLLOWED BY THE MAIN ROTOR BLADES. HELICOPTER THEN ROCKED BACKWARDS, THE REAR PORTION OF THE SKIDS IMPACTED THE GD AND THE MAIN ROTOR BLADES SLICED THROUGH THE TAILBOOM.
Source: NTSB Aviation Accident Database
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