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