As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - MAJOR REPAIR - DURING C-12 CHECK A 1/4 INCH CRACK WAS FOUND AT 4 EACH RIVETS AT THE LOWER TRAILING EDGE OF THE RT WING NR 6 SLAT, JUST BELOW THE INBOARD AUXILIARY TRACK WS 580. MAINTENANCE REMOVED DAMAGED AREA OF NR 6 SLAT AT LOWER TRAILING EDGE; FABRICATED A DOUBLER AND FILLER; AND INSTALLED REPAIR PARTS IAW B737-300 SRM 57-43-01, PG. 216.