As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - MAJOR REPAIR - DURING C-18 CHECK CORROSION WAS FOUND ON AFT CARGO DOOR SILL ATTACH ANGLE AT BS 847, BETWEEN STR 24 RT AND STR 25 RT. MAINTENANCE REMOVED CORRODED AFT CARGO DOOR SILL ATTACH ANGLE AT BS 847, FROM STR 24 RT TO STR 25 RT; FABRICATED A NEW REPLACEMENT ATTACH ANGLE PER DWG 69-43233; INSTALLED REPAIR PART IAW B737-300 SRM 51-40-02.