As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - DURING C13 CHECK DISCOVERED DISBOND AREA ON THE LOWER SURFACE OF THE LEFT WING, NR 2 SLAT, OUTBOARD END OF SLAT. MAINTENANCE REMOVED DISBOND SKIN AND CORE ON THE NR 2 SLAT IAW BOEING 737-300 SRM 51-70-10-2R4. FABRICATED REPLACEMENT CORE AND DOUBLER IAW BOEING 737-300 SRM 51-70-10-2R4. BONDED REPLACEMENT PARTS TO THE NR 2 SLAT OUTBOARD END IAW BOEING 737-300 SRM 51-70-10-2R4.