As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-04 CHECK A 1.5 INCH CRACK WAS FOUND AT FRAME FLANGE RELIEF CUTOUT ON FLIGHT COMPARTMENT FLOOR WEB 4 INCH INBOARD OF FUSELAGE SKIN AT BS 194 RT, WL 207.5. MAINTENANCE REMOVED CRACKED WEB AT BS 194 RT, WL 207.5; FABRICATED A NEW REPLACEMENT WEB PER DWG 65-45833; INSTALLED REPAIR PART IAW B737-300 SRM 51-40-02.