As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - DURING C19 CHECK DISCOVERED 4 CRACKS, .25 INCHES, ON THE BOTTOM OF THE NR 2 SLAT SKIN AT SLAT STATION 226L TO 231L. MAINTENANCE CUT OUT DAMAGED AREA IAW BOEING 737-300 SRM 57-43-01-2R6. FABRICATED FILLER AND SPLICE PLATE IAW BOEING 737-300 SRM 57-43-01-2R6. INSTALLED FABRICATED REPAIR PARTS ON THE BOTTOM OF THE NR 2 SLAT SKIN AT SLAT STATION 226L TO 231L.