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 APPROX BL 0 - FOUR AREAS OF CORROSION EVIDENT AROUND FASTENER HOLES. 947.5 FLOOR BEAM REPAIRED IAW SRM 53-70-51-2R-5 REF MIC# 6203148.