As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - DURING C18 CHECK DISCOVERED FLOOR SHEAR TIE CRACKED AT WL 207 BETWEEN BS 188 AND 196.5, BL 30R. MAINTENANCE REMOVED FLOOR WEB IAW BOEING 737-300 SRM 57-40-02-0G. FABRICATED NEW WEB IAW BOEING 737-300 51-40-05-0G FIG 3 AND DWG 65-45383. INSTALLED FABRICATED REPAIR PARTS AT WL 207 BETWEEN BS 188 AND 196.5, BL 30R IAW BOEING 737-300 SRM 51-40-02-0G.