As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C16 CHECK DISCOVERED 1 CRACK, .375 INCHES IN LENGTH, LOCATED ON THE BOTTOM OF THE NR 5 SLAT SKIN BELOW THE OUTBOARD AUXILIARY TRACK. MAINTENANCE REMOVED CRACKS FROM NR 5 SLAT SKIN IAW BOEING 737-300 SRM 57-43-01-2. FABRICATED FILLER AND SPLICE PLATE IAW BOEING 737-300 SRM 57-43-01-2. INSTALLED FABRICATED REPAIR PARTS AT THE BOTTOM OF THE NR 5 SLAT, BELOW OUTBOARD AUXILIARY TRACK IAW BOEING 737-300 SRM 57-43-01-2.