What was found
DURING C-04 CHECK CORROSION WAS FOUND ON UPPER AND LOWER SURFACE OF AFT CARGO COMPARTMENT CORNER PROFILE FR 56-58, LBL 686MM. MAINTENANCE CUT OUT DAMAGED AREA OF AFT CARGO COMPARTMENT CORNER PROFILE FR 56-58, LBL 686MM; FABRICATED A FILLER AND DOUBLER; INSTALLED REPAIR PARTS IAW AWA ER 26-5341-03142-TB5.