As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUEL CONTROL UNIT DRIVE SHAFT BEARINGS STARTED TO FAIL CAUSING ENGINE TORQUE AND FUEL FLOW FLUCTUATIONS. ENGINE WAS NOT SHUT DOWN IN FLIGHT, REMOVED FUEL CONTROL UNIT TO FIND DRIVE SHAFT BEARINGS FAILING AND FUEL CONTROL UNIT TO HIGH PRESSURE FUEL PUMP DRIVE (PLASTIC) COUPLING ALMOST SHEARED.