As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
***CORROSION*** FWD CARGO STA 500A TO STA 500D STR25R RBL24 Z-CHANNEL HAS CORROSION / REMOVED AND REPLACED Z CHANNEL (SIDE PLATE ASSEMBLY) AT FWD CARGO R/H FROM STA 500A TO STA 500D IAW B737-700 SRM 51-40-02-0G-0 AND DRAWING NO. 143A7500; Z CHANNEL FABRICATED ON DEFECT #W144177.