What was found
DURING C-04 CHECK, CORROSION WAS FOUND ON AFT CARGO COMPARTMENT DOOR SILL WEB (SHEET COVER) BETWEEN FS 52 AND FS 56. MAINTENANCE REMOVED CORRODED AFT CARGO COMPARTMENT DOOR SILL WEB FROM FS 52 TO FS 56; FABRICATED A NEW REPLACEMENT SECTION OF WEB; INSTALLED REPAIR PART IAW A320 SRM 51-42-11, FIG. 2 & 3.