As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LCQ - MAJOR REPAIR - DURING C-5 CHECK CORROSION WAS FOUND THROUGHOUT ENTIRE LENGTH OF AFT CARGO DOOR LOWER SILL FROM BS 793 TO BS 847, STR 24 RT TO STR 26 RT. MAINTENANCE REMOVED CORRODED AFT CARGO DOOR LOWER SILL; FABRICATED A NEW REPLACEMENT SILL PER DWG 65-47957; INSTALLED REPAIR PART IAW B737-300 SRM 51-40-08, PARA 6.