ARDMORE, OK, USA
N2202C
BELL 47D-1
ACFT WAS DAMAGED AS A RESULT OF A HARD LNDG DURING A PRACTICE TOUCHDOWN AUTOROTATION THAT WAS BEING DEMONSTRATED BY THE CFI TO THE STUDENT PLT. WINDS HAD INCREASED DURING THE INSTRUCTIONAL FLT TO THE PT THAT THE STUDENT WAS HAVING A HARD TIME CONTROLLING THE ACFT, WHEN THE CFI DECIDED TO DEMONSTARTE AUTOROTATIONS. DURING THE 2ND AUTO, THE ACFT DEVELOPED A HIGH SINK RATE DURING FINAL DESCENT WHICH THE CFI COULD NOT ARREST PRIOR TO THE HARD LANDING. THE CFI STATED THAT THE WINDS WERE NORTHERLY AT 13 KTS GUSTONG TO 21 KTS AND THAT HE FELT THEY CONTRIBUTED TO THE ACCIDENT.
THE FLIGHT INSTRUCTOR FAILED TO RECOGNIZE THAT THE AIRCRAFT WAS DEVELOPING A DANGEROUS SINK RATE DURING THE AUTOROTATION AND TAKE CORRECTIVE ACTION BY EXECUTING A POWER RECOVERY. CONTRIBUTING TO THE ACCIDENT WERE THE GUSTY WIND CONDITIONS.
Source: NTSB Aviation Accident Database
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