PANAMA CITY BCH, FL, USA
N43CD
BELL 47G-3B1
THE PLT REPORTED THAT SHORTLY AFTER TAKEOFF THE ENG BEGAN TO LOSE POWER, THEN FAILED. HE THEN AUTOROTATED & SET THE HELICOPTER DOWN APRX 6 FEET OFFSHORE. EXAMINATION OF THE ENG LOGBOOKS BY FAA PERSONNEL REVEALED THAT AD 62-23-02 WHICH REQUIRES INSP OF THE OIL FILTER EVERY 25 HOURS HAD BEEN OVERDUE BY 20.9 HOURS. INSP OF THE TRANSMISSION REVEALED THAT A 5 1/2 INCH PIECE FROM THE CLUTCH DRUM RING SEPARATED WHICH DISENGAGED THE MAIN ROTOR FROM THE ENG RESULTING IN THE LOSS OF MAIN ROTOR RPM. EXAMINATION OF THE FAILED CLUTCH DRUM RING REVEALED EVIDENCE TO SUGGEST THAT IT FAILED DUE TO FATIGUE.
Source: NTSB Aviation Accident Database
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