As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LCQ - MAJOR REPAIR - DURING C-15 CHECK A .75 INCH CRACK WAS FOUND ON LT WING NR 3 SLAT SKIN AT CUTOUT FOR ACTUATOR WS 152. MAINTENANCE BLENDED OUT CRACKED SKIN AT CUTOUT LT WING NR 3 SLAT WS 152; PERFORMED HFEC INSPECTION OF BLEND OUT TO VERIFY NO CRACKS EXIST; TREATED AREA, REPAIR ACCOMPLISHED IAW B737-200 SRM 57-20-01, FIG 001, PG 1-2.