As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TURBINE WAS GENERATING METAL. FOUND THE BEARING CLAMPING SURFACE OF THE THRUST PLATE WORN DUE TO SPINNING OF THE NR 8 BEARING OUTER RACE. FRETTING ON THE OPPOSITE SIDE OF THE THRUST PLATE INDICATED THERE MAY HAVE BEEN INSUFFICIENT TORQUE ON THE NR 8 BEARING SUMP NUT.