What was found
MCN - MAJOR REPAIR - DURING C-18 CHECK THE RIGHT WING NR 4 SLAT WAS FOUND DELAMINATED AT INBOARD LOWER TRAILING EDGE. MAINTENANCE CUT OUT DELAMINATED SECTION OF SKIN AT INBOARD LOWER TRAILING EDGE; FABRICATED REPAIR DOUBLERS; BONDED REPAIR PART TO SLAT SKIN IAW B737-300 SRM 51-70-10, FIG 5 & 16, PG 8, 31, 41, 43-44, & 67-69.