As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT ANNUAL INSPECTION, BOTH FORWARD AND REAR PROP SPINNER BULKHEADS FOUND TO HAVE MULTIPLE CRACKS AROUND BOLT HOLES AND RIVETS. REAR BULKHEAD WAS SLIGHTLY DEFORMED. SOMEONE HAD STOP-DRILLED CRACKS AT SAME TIME IN THE PAST. SUBMITTER SUGGESTED CRACKS OF THIS NATURE RENDER PART UNAIRWORTHY.