What was found
DURING C-04 CHECK, EXFOLIATION CORROSION WAS FOUND ON AFT CARGO COMPARTMENT DOOR SILL FORWARD PLATE, AT FORWARD INBOARD EDGE FS 53. MAINTENANCE REMOVED CORRODED AFT CARGO DOOR SILL FORWARD PLATE AT FS 53; FABRICATED A NEW REPLACEMENT PLATE; INSTALLED REPAIR PART IAW A320 SRM 51-42-11, FIG. 2, 3, 8, & 12.