What was found
PYLON NR 2 AT AFT SPAR SECTION PYLON TORQUE BOX INNER SURFACE HAS SEVERAL WORKING RIVETS. VISIBLE THRU OPEN ACCESS DOOR NR 484CR. UPON FURTHER INVESTIGATION CRACKS CONTINUING PAST STOP DRILLED ON RIB 20. REMOVED RIB ASSY IAW SRM 51-40-21. FABBED AND RECEIVED PARTS ON MAE TRAV NR T7/668674,T7/669337 AND T7/669336. LOCATED AND DRILLED IAW SRM 51-40-44. TREATED AND PRIMED PAINTED NEW PARTS IAW SRM 51-21-10 AND INSTALLED RIB ASSY AND REPLACED WORKING RIVETS IAW SRM 51-40-21.