As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - MAJOR REPAIR - DURING C16 CHECK DISCOVERED 8 CRACKS ON BOTTOM OF THE NR 4 SLAT SKIN, BELOW ACTUATOR AT SS 61.01. MAINTENANCE REMOVED DAMAGED SKIN ON THE NR 4 SLAT IAW BOEING 737-300 SRM 57-43-01-2R. FABRICATED FILLER AND SPLICE PLATE IAW BOEING 737-300 SRM 57-43-01-2. INSTALLED FABRICATED REPAIR PARTS ON THE NR 4 SLAT SKIN, BELOW ACTUATOR, AT SS 61.01 IAW BOEING 737-300 SRM 57-43-01-2R 6 SHEETS 1-4.