LIHUE, HI, USA
N278KA
BELL 206L
DURING A LOCAL SIGHTSEEING FLIGHT, THE PILOT REPORTED THAT WHILE ON FINAL APPROACH FOR LANDING, THE AUDIO AND LIGHT FOR LOW RPM SOUNDED AND ILLUMINATED. THE HELICOPTER WAS AUTOROTATED. IT INITIALLY BOUNCED WHEN IT TOUCHED DOWN, THEN LANDED HARD. THE ENGINE WAS STILL RUNNING AFTER THE ACCIDENT. THE ENGINE WAS REMOVED AND PLACED ON A TEST CELL. ALL ENGINE PARAMETERS EXCLUDING THE SEAL VENT PRESSURE, WERE FOUND TO BE WITHIN LIMITS AS RECOMMENDED BY THE MANUFACTURER. AFTER CHANGING THE VENT ORIFICE FROM A NO. 2 TO A NO. 4 THE DISCREPANCY WAS CORRECTED.
Source: NTSB Aviation Accident Database
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