What was found
LT WING UPPER T/E WBL 320 NR 4 SPOILER INBOARD CENTER HINGE CUTOUT IS CRACKED FWD. REMOVED FASTENERS AT LT WING UPPER T/E WBL 320 NR 4 SPOILER INBOARD CENTER HINGE CUTOUT IAW B727SRM 51-30-2. STOP DRILLED 0.250" DIA AT END OF CRACK IAW B727 SRM 57-30-4 FIG 10. FABRICATED DOUBLER MATERIAL USED 7075T6 0.071 PO NR 9005482 DIMENSION 4 INCH BY 5 5/8 INCH IAW B727SRM 57-30-4 FIG10. TREATED AND PRIMED DOUBLER AND AREA IAW B727SRM 51-10-2. INSTALLED DOUBLER REPAIR IAW B727SRM 51-30-2 AND 57-30-4 FIG 10.