As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CHECK-C MAINT CABIN MEMBRANE WAS CORRODED AT STA 503 TO 597, RT SIDE CABIN FLOOR AT STA 18R AREA. REMOVED CORROSION PER SPM 6-80-01. REPAIRED MEMBRANE PER SRM 53-01 FIG 4 SHEET 3 FIG 7. INSTALLED RIVETS PER SRM 51-30-02. REPAIR MATERIAL 7975-T6, 0.020 MATERIAL.