What was found
DURING C-CHECK, NR 5 SLAT OUTBOARD HOOK CUTOUT IN UPPER L/E SKIN AFT OUTBOARD CORNER IS CRACKED. REMOVED PAINT AT AFFECTED AREA IAW MM 51-20-1 AND STOP DRILLED CRACK IAW SRM 51-10-1 HFEC VERIFIED STOP DRILL IAW B-727 NDT MM PT 6 51-00-00 FIG 23. FABRICATED PLATE DOUBLER REPAIR FROM MAT 301-1/2 HD .025 PO 9912398 DIM 7.125 X 5.25 INCH AND FILLER STRAP FROM MAT 301-1/2 HD .032 PO 9912398 AND BACKING STRAP FROM MAT 2024 T3 .063 PO 900355 DIM 3 X 2 INCH IAW B-727 SRM 57-30-4 FIG 9. TREATED AND PRIMED IAW B-727 SRM 51-10-2. INSTALLED PLATE DOUBLER REPAIR IAW SRM 51-30-2.