What was found
DURING C-CHECK, WS 464 UPPER LT WING L/E SURF IS CRACKED AT RIVET. REMOVED FASTENERS AS REQUIRED IAW B-727 SRM 51-30-2. CUT OUT DAMAGED AREA DIM 2.375 X 1.25 INCH AND FABBED DOUBLERS FROM 2024 T3 .050 INCH PO 90096 DIM 7.25 X 6 X 7.25 X 4.5 INCH AND FILLER FROM 2024 T3 .040 PO 90024 DIM 2.375 X 1.25 INCH IAW B-727 SRM 57-30-4 FIG 4 SHEET 6 REPAIR III. PARTS TREATED AND PRIMED IAW B-727 SRM 51-10-2 AND INSTALLED IAW B-727 SRM 57-30-4 FIG 4.