As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-05 CHECK CORROSION WAS FOUND ON FORWARD CARGO COMPARTMENT THRESHOLD INTERCOSTAL WEB AT BS 474, STR 25 RT. MAINTENANCE REMOVED CORRODED INTERCOSTAL WEB AT BS 474, STR 25 RT; FABRICATED A NEW REPLACEMENT WEB PER DWG 69-16783; INSTALLED REPAIR PART IAW B737-300 SRM 51-40-02, FIG. 8 & 12.