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-18 CHECK A .375 INCH CRACK WAS FOUND IN STRINGER 16 RT AT BS 500C+5. MAINTENANCE CUT OUT DAMAGED SECTION OF STRINGER 16 RT AT BS 500C+5; FABRICATED A NEW REPLACEMENT SECTION OF STRINGER, AND A STRINGER SPLICE; INSTALLED REPAIR PARTS IAW B737-300 SRM 53-00-03 FIG 201.