As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - DURING C24 CHECK DISCOVERED MAIN CABIN FRAME AT BS 663 CRACKED .5 INCHES IN LENGTH AT STR 2R. MAINTENANCE ROUTED OUT DAMAGED AREA IAW BOEING 737-300 SRM 53-00-07-2R9 FIG 201. FABRICATED REPAIR ANGLE, FILLERS, AND STRINGER TIE IAW BOEING 737-300 SRM 53-00-07-2R9 FIG 201. INSTALLED FABRICATED REPAIR PARTS AT BS 663 AND STR 2R IAW BOEING 737-300 SRM 53-00-07-2R9 FIG 201.