RIALTO, CA, USA
N58164
HUGHES 269C
THE PRIVATE PILOT HAD RENTED THE HELICOPTER FOR A LOCAL FLIGHT. AFTER PRACTICING SOME MANEUVERS ON THE AIRPORT, THE COMMERCIAL PILOT/PASSENGER ASSUMED THE CONTROLS AND EXECUTED A 180-DEG PRACTICE AUTOROTATION TO A TAXIWAY. THE M/R RPM DECREASED TO 380 RPM. ABOUT 30 FT AGL A POWER RECOVERY WAS ATTEMPTED, BUT THE SINK RATE WAS TOO HIGH. THE TAIL BOOM SUSTAINED A M/R BLADE STRIKE.
THE PILOT/PASSENGER'S FAILURE TO MAINTAIN ADEQUATE ROTOR RPM AND THE PILOT-IN-COMMAND'S INADEQUATE SUPERVISION OF THE FLIGHT.
Source: NTSB Aviation Accident Database
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