What was found
THE FUEL PUMP DRIVE SHAFT BEARING ASSEMBLY APPARENTLY FAILED OVER AN UUNDETERMINED PERIOD OF TIME, LEADING TO SHAFT LOCK UP AND SHEARED THE DRIVE COUPLING. BLACK RESIDUE FROM THE BEARING FAILURE WAS FOUND TO BE EMITTING FROM THE GANG DRAIN AND STREAKING BACK ON THE LT OB MAIN GEAR DOOR OF THE AIRCRAFT. THE LT ENGINE WAS SHUTDOWN DUE TO UNCONTROLLED ENGINE TEMPERATURE AND TORQUE RISE RESULTING FROM THE FUEL CONTROL FAILURE. AC LANDED WITHOUT INCIDENT. PROBABLE CAUSE WAS THAT THE FC SHAFT BEARING ASSEMBLY SEAL FAILED. WASHING OUT THE GREASE IN THE BEARING CAGE LEADING TO THE FAILURE OF THE FUEL CONTROL. FUEL PUMP WAS ALSO REPLACED AS PRECAUTIONARY MEASURE.