As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE INSPECTION FOUND THE CENTER HAT BEAM IN LAVATORY HAS CORROSION AROUND NUT PLATE HOLES AT PREVIOUSLY REPAIRED AREAS. THE AIRCRAFT WAS REMOVED FROM SERVICE. REPAIRED CENTER HAT BEAM IAW EO EM-53 MR-2080. THE AIRCRAFT WAS RETURNED TO SERVICE.