As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-05 CHECK EXFOLIATION CORROSION WAS FOUND ON FORWARD CARGO COMPARTMENT INTERCOSTAL AT FORWARD SIDE OF BS 500D, STR 26 LT. MAINTENANCE REMOVED CORRODED INTERCOSTAL AT BS 500D, STR 26 LT; FABRICATED A NEW REPLACEMENT INTERCOSTAL PER DWG 69-41757; INSTALLED REPAIR PART IAW B737-300 SRM 51-40-02.