As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE, BULK CARGO DOOR SILL HAS CORROSION AT FASTENER HOLES; REF NON-ROUTINE 20567 SERVICE ORDER 440577. R & R FASTENERS AND BULK DOOR SILL. FOUND TO BE OUT OF LIMITS. RECEIVED NEW BULK DOOR SILL AND INSTALLED IAW SRM 51-42-11 PAGE 2 & 3.