As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - MAJOR REPAIR - DURING C-18 CHECK EXFOLIATION CORROSION WAS FOUND ON INTERCOSTAL WEB AFT OF FORWARD CARGO DOOR AT STR 26 RT BETWEEN BS 480 AND BS 500. MAINTENANCE REMOVED CORRODED INTERCOSTAL WEB AT STR 26 RT BETWEEN BS 480 AND BS 500; FABRICATED A NEW REPLACEMENT INTERCOSTAL WEB PER DWG 65-20726; INSTALLED REPAIR PART IAW B737-300 SRM 51-40-02 FIG 3 & 8 PG 1 & 38.