As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LCQ - MAJOR REPAIR - DURING C-12 CHECK 5 EACH CRACKS WERE FOUND EMANATING FROM RIVET HOLES IN LEFT L/E SLAT JUST OUTBOARD OF ENGINE PYLON, STAB STA 55.75. MAINTENANCE CUT OUT CRACK IN LEFT L/E SLAT AT STAB STA 55.75; PERFORMED HFEC INSPECTION OF CUTOUT TO VERIFY NO CRACKS EXIST; FABRICATED A FILLER AND SPLICE PLATE; INSTALLED REPAIR PARTS IAW B737-300 SRM 57-43-01-2 FIG 206.