As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C2 CHECK WAS FOUND CORROSION ON LOWER SILL OF LARGE CARGO DOOR CUTOUT BETWEEN STA 500-522. DAMAGED AREA WAS REPAIRED IAW EWO 767 53-074 AND MFG SERVICE REQUEST 1-791518899. THIS REPAIR CONSTITUTES A MAJOR REPAIR. FAA FORM 8100-9 WAS ISSUED APPROVING THIS REPAIR.