LONG BEACH, CA, USA
N143EH
AEROSPATIALE AS350D
THE PILOT WAS ABOUT 15 MINUTES INTO HIS OVER WATER FLIGHT WHEN THE ENGINE FAILED. THE FLOATS WERE DEPLOYED AND A SUCCESSFUL AUTOROTATION WAS MADE IN THE OCEAN. THE DRIVE SPLINES ON THE ENGINE DRIVEN FUEL PUMP EXHIBITED EVIDENCE OF EXCESSIVE ASYMMETRICAL WEAR AND THE ENGINE ACCESSORY DRIVE GEAR THAT DROVE THE FUEL PUMP SPLINES WAS EXCESSIVELY WORN. THE EXCESSIVE CLEARANCE BETWEEN THE GEAR AND SPLINE PERMITTED SLIPPAGE IN THE FUEL PUMP DRIVE SYSTEM.
THE FAILURE OF THE ENGINE DRIVEN FUEL PUMP.
Source: NTSB Aviation Accident Database
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