As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - MAJOR REPAIR - DURING C16 CHECK DISCOVERED ATTACH ANGLE CRACKED FROM BS 380 TO BS 400, BL 0 IN CABIN. MAINTENANCE REMOVED CRACKED INTERCOSTAL AT BS 380-440 IAW BOEING 737-300 SRM 51-40-02. FABRICATED REPAIR ATTACH ANGLE IAW BOEING DWG 69-35365. INSTALLED FABRICATED REPAIR PARTS AT BS 380-440 IAW BOEING 737-300 SRM 51-40-02.