HOUMA, LA, USA
N73241
BELL 47G3-B
THE HELICOPTER WAS BEING LANDED NEAR AN ALLIGATOR'S NEST, NEAR A LAKE. THE PILOT SAID THAT THE HELICOPTER FAILED TO RESPOND TO COLLECTIVE PITCH INPUTS DURING THE LANDING. HE SAID HE THEN TRIED TO MAKE A SLIDE-ON-LANDING INTO THE WATER BUT THE REAR PORTION OF THE FIXED FLOTATION GEAR IMPACTED A LEVEE, AND THE HELICOPTER ROLLED OVER FORWARD, AND SETTLED UPSIDE DOWN IN THE LAKE. NO PRE-IMPACT PROBLEMS WERE FOUND WITH THE FLIGHT CONTROLS.
THE PILOT'S FAILURE TO MAINTAIN ROTOR RPM AND AN EXCESSIVE SINK RATE.
Source: NTSB Aviation Accident Database
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