As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SUSPECTED CORROSION UNDER SKIN AROUND AFT LAVATORY SERVICE PANEL. AREA IS JUST FORWARD OF LOWER FORWARD CORNER OF DOOR. SKIN IS BULGED WITH APPARENT COUNTERSUNK RIVET THAT IS PULLED. REPAIRED SKIN AND INTERNAL DOUBLER FWD OF AFT LAV SERVICE DOOR IAW EA 30-2017-162.