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 A 2 INCH CRACK WAS FOUND AT RIVET HOLE ALONG LOWER AFT EDGE OF NR 6 SLAT, SPAR STA 597. MAINTENANCE CUT OUT DAMAGE ON NR 6 SLAT AT SPAR STA 597; FABRICATED A FILLER & REPAIR DOUBLER; INSTALLED REPAIR PARTS IAW B737-300 SRM 57-43-01 FIG 206 PG 216-219.