N4835A
BELL 206B
THE PLT WAS ATTEMPTING TO TAKE OFF FROM THE DECK OF A TUNA BOAT WHEN IT CONTACTED THE SIDE OF THE BOAT AND SANK IN THE OCEAN. POST ACCIDENT INSPECTION REVEALED ONE OF TWO NOSE TIEDOWN STRAPS HAD NOT BEEN REMOVED FROM THE HELICOPTER PRIOR TO THE TAKEOFF. THE NOSE TIEDOWN WERE NORMALLY USED ONLY AFTER FLYING HOURS AND WHEN ROUGH SEAS EXISTED. THE FOUR SIDE TIEDOWN STRAPS NORMALLY USED WHEN THE HELICOPTER WAS ON DECK WERE RELEASED BY A MECHANIC JUST PRIOR TO THE TAKEOFF. THE ACCIDENT OCCURRED IN THE PACIFIC OCEAN AT COORDINATES 10.15'N AND 141.40'W, APPROXIMATELY 91 MILES SE OF HILO, HAWAII.
Source: NTSB Aviation Accident Database
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