As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - DURING C16 CHECK DISCOVERED 4 CRACKS ON THE BOTTOM OF THE NR 2 SLAT SKIN, OUTBOARD OF ACTUATOR FROM SS221 TO SS225. MAINTENANCE CUT OUT DAMAGED SKIN IAW BOEING 737-300 SRM 57-43-01-2R6 FIG 201. FABRICATED FILLER AND SPLICE PLATE IAW BOEING 737-300 SRM 57-43-01-2R6 FIG 201. INSTALLED FABRICATED REPAIR PARTS ON THE BOTTOM OF THE NR 2 SLAT SKIN, OUTBOARD OF ACTUATOR FROM SS221 TO SS225 IAW BOEING 737-300 SRM 57-43-01-2R6 FIG 201.