What was found
DURING C-CHECK, RT WING L/E UPPER SKIN 1.5 INCH CRACK JUST RIGHT UP I/B SIDE JACK SCREW NR 3. CUT OUT DAMAGE SECTION OF L/E SKIN AT RT WING. PERFORMED HFEC OF CUTOUT AREA, NO DISCREPANCIES NOTED. INSTALLED DOUBLER AND FILLERS AS REQUIRED TO RT WING L/E UPPER SKIN REF: A-300 SRM 57-34-11. MATERIAL USED 2014-0.063 HEAT TREATMENT PER A-300 SRM 51-40-30 / PO MATERIAL / 24302423 HEAT TREATED TO T6. SIZE FILLER 2014 T6 0.063, 26 X 18 INCHES (2) STRAPS SPLICES 2014 T6 0.063 20 X 5 INCHES, 4 SPLICE STRAPS (2) 2014T6 0.063 9 X 1.5 INCH AND (2) 2014 T6 0.063 7 X 1.5 INCH. TREATED AND PRIMED AREA / FILLERS AND DOUBLERS, APPLY COAT PAINT POLY GRAY REF: A-300 SRM 51-40-10 AND A-300 SRM 51-40-12.