As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-18 CHECK, 2 EACH 3/4 INCH CRACKS WERE FOUND IN LOWER SKIN OF NR 1 SLAT BELOW OUTBOARD MAIN TRACK SLAT STA 355 - 357. MAINTENANCE CUTOUT DAMAGE IN NR 1 SLAT LOWER SKIN; FABRICATED A FILLER AND SPLICE PLATE; INSTALLED REPAIR PARTS IAW B737-300 SRM 57-43-01, FIG 206.