What was found
DURING C-04 CHECK CORROSION WAS FOUND ON UPPER SURFACE OF AFT CARGO COMPARTMENT FLOOR SUPPORT (SEALING PROFILE) AT FR 58, Y-25. MAINTENANCE REMOVED CORROSION AND FOUND MATERIAL LOSS TO BE OUT OF LIMITS, REMOVED CORRODED FLOOR SUPPORT AT FR 58, Y-25; FABRICATED A NEW REPLACEMENT FLOOR SUPPORT; INSTALLED REPAIR PART IAW A320 SRM 51-42-11, PG. 7-8, 10, 12, FIG. 2 AND 3.