As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(LOG 0375205) AFT CARGO COMPARTMENT Z CHANNEL AT STA 727-847 LBL 24 IS CORRODED. REPAIRED AFT CARGO COMPARTMENT Z CHANNEL FROM STA 727 TO STA 847, LBL 24 PER B737-900 SRM 53-00-53-2R-6, SRM 51-40-05-0G, SRM 51-40-02-0G AND DWG# 146A7502 REV-A.