As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TEAR DOWN OF ENGINE TO INVESTIGATE THE CAUSE OF HIGH OIL CONSUMPTION, THE NR 3 BEARING SEAL RING WAS FOUND LIBERATED FROM ITS SUPPORT (DUCT) ASSY, PN 75663U. ALL 30 RIVETS, PN AN123320, HAD FAILED UNDER MANUFACTURED HEAD. INVESTIGATION INTO CAUSES OF FAILURE ONGOING.