What was found
DURING A "C" CHECK, CRACK AT LIGHNING HOLE TORQUE BOX L/SIDE AFT OF STA 1323. REMOVED FASTENERS AT LIGHTENING HOLE LOWER TORQUE BOX L/SIDE AFT OF STA 1323 IAW B727 SRM 51-30-2. STOP DRILL CRACK .250 TERMINATED AT END OF CRACK IAW B727 SRM 51-10-1. FABRICATED DOUBLER REPAIR MAT IAW 53-10-2 FIG 6 FROM MAT 7075T6.040 PO NR 9001688 DIM 2 1/2 INCH BY 3 INCH IAW B727 SRM 51-40-2 FIG 1. ACCOMPLISHED 727 HFEC INSPECTION 51-00-00 FIG 4 END OF CRACK FOUND ALODINED AND PRIMED IAW B727 SRM 51-10-2. INSTALLED DOUBLER REPAIR IAW B727 SRM 51-40-2 FIG 1.