As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE: AFT CABIN WET AREA PASSENGER FLOOR STRUCTURE UPPER SURFACE AT STA 947.5 RBL 50 - FLOOR STRUCTURE AROUND RH AFT LAV AFT OB MOUNT HAS EVIDENCE OF CORROSION . FLOOR BEAM REPAIR DONE IAW B737 SRM 53-70-51-2R-5. MIC# 6203148