What was found
AT LT SIDE OF AFT AIRSTAIR WELL 2 CRACKS EMANATING FROM LOWER LIGHTENING HOLE ON TORQUE BOX AT BS 1237. REMOVED EXISTING DOUBLER AT LT SIDE AFT AIRSTAR WEB BS 1237 IAW B727 SRM 51-30-2. FAB NEW DOUBLER FROM 7075T6 .040 PO NR 9003137 DIM.3" BY 3" IAW B727 SRM 51-40-2 FIG 1 AND SRM 53-10-2 FIG 6 FOR TOP POS OF LIGHTENING HOLE. STOP DRILLED CRACK AT BOTTOM OF LIGHTENING HOLE IAW B727 SRM 51-10-1. PERFORMED NDT AROUND STOP HOLE, NO CRACKS NOTED IAW PART 6, 51-00-00 FIG 23. FAB NEW REPAIR DOUBLER FOR CRACK AT BOTTOM OF LIGHTENING HOLE FROM 7075T6 .040 PO NR 9003137 APPROX 3 INCH BY 3" IAW B727 SRM 51-40-2 FIG 1. TREATED AND PRIMED NEW REPAIR DOUBLERS AND WORKING AREA IAW B727 SRM 51-10-2. INSTALLED REPAIR DOU