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 2 EACH CRACKS, 0.375 INCHES, ON BOTTOM NR 1 SLAT SKIN BELOW INBD AUX TRACK AT WS 318.0L. MAINTENANCE CUTOUT DAMAGE AND FABRICATED FILLER AND SPLICE PLATE IAW BOEING 737-300 SRM 57-43-01-2R6 FIG 201. THEN INSTALLED FILLER AND SPLICE PLATE AT WS 318.0L IAW BOEING 737-300 SRM 57-43-01-1R6 FIG 201.