As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - DURING C19 CHECK DISCOVERED INTERCOSTAL CRACKED, .5 INCHES, AT STR 18AR AND AT BS 716. MAINTENANCE REMOVED CRACKED INTERCOSTAL AND FABRICATED REPLACEMENT INTERCOSTAL IAW BOEING 737-300 SRM 53-30-01-0G FIG 3 AND 7 AND SRM 51-40-02-0G FIG 12. INSTALLED FABRICATED REPAIR PARTS AT STR 18A'R' AND AT BS 716 IAW BOEING 737-300 SRM 53-30-01-0G FIG 3 AND 7 AND SRM 51-40-02-0G FIG 12.