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-18 CHECK A .1875 INCH CRACK WAS FOUND IN UPPER RADIUS OF INTERCOSTAL AT BS 306, LBL 27. MAINTENANCE CUT OUT DAMAGE IN UPPER RADIUS OF INTERCOSTAL AT BS 306, LBL 27; FABRICATED A FILLER AND REPAIR ANGLE; INSTALLED REPAIR PARTS IAW B737-300 SRM 51-70-11.