What was found
DURING C-4 CHECK INSPECTION, FOUND RIGHT UPPER WING INBOARD SLOT LEADING EDGE HAS CORROSION AROUND FRONT SPAR SCREWS. REPAIRED DAMAGED SKIN, INSTALLED REPAIR IAW DC-8 SRM 57-2-1. CORROSION CARD NR 121R-0552, NON-ROUTINE TASK CARD NR 87402.