What was found
DURING C-CHECK DISCREPANCY AS FOLLOWS, FUSELAGE SKIN HAS PILLOWING FWD BS 420 AT STR 20R. STRIPPED PAINT ON AFFECTED AREA IAW B-727 MM 51-20-01. REMOVED FASTENERS PREVIOUS REPAIR IAW B-727 SRM 51-30-2 AND FOUND CORROSION ON REPAIR OUT OF LIMITS IAW B-727 SRM 51-30-1 FIG 1 WITHIN CORROSION NOTED ON SKIN AT 2 EACH AREAS. CUT OUT DAMAGED AREAS DIM 3.75 X 2.875 INCH AND 2.875 INCH IAW B-727 SRM 53-30-3 FIG 4. FABRICATED DOUBLER FROM 2024 T-3 0.50 PO 9912380 DIM 22.5 INCH X 10.5 INCH AND 2 EACH FILLERS FROM 2024 T-3 0.40 PO 9912380 DIM 3.75 X 2.875 INCH AND 2.75 INCH X 2875 INCH IAW B-727 SRM 53-30-2 FIG 1 AND 53-30-3 FIG 4. PARTS ALODINED AND PRIMED IAW B-727 SRM 51-10-2.