As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(LOG 2321551) DURING INSPECTION FOUND CORROSION ON RH SIDE PLATE BTWN STA 727/STA 767 AND RBL= 21 AT AFT CARGO COMPARTMENT. SIDE PLATE BTWN STA 727/STA 767 AND RBL=21 AT AFT CARGO COMPARTMENT. WAS REPLACED PER B737-800, SRM 51-40-02-0G.