What was found
DURING ROUTINE C-CHECK FOUND LT WING IB FLAP TRAILING EDGE PANEL UPPER SKIN DELAMINATED. REMOVED FASTENEERS AS NEEDED TO PERFORM REPAIR. REMOVED DAMAGED SKIN SECTION. FABRICATED FINGER DOUBLERS AND NEW UPPER SKIN SECTION. LOCATED, DRILLED, TRIMMED, TREATED, PRIMED, AND INSTALLED NEW UPPER SKIN SECTION AND NEW FASTENERS FROM STATION XW91 TO STATION XW104. IAW SRM 57-2-1, 51-1-21, 51-1-9A, 51-1-4, 51-1-5, AND 51-1-8.