As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE FUSELAGE SKIN BELOW THE LAVATORY SERVICE PANEL WAS FOUND WITH AN AREA OF SKIN CORROSION AT STRINGER 20R BETWEEN FS 300 & FS 312. THE CORROSION WAS REMOVED WITH AN 8 X 2 SKIN CUTOUT. THE CUTOUT WAS REPAIRED WITH AN EXTERNAL ALUMINUM DOUBLER PER ER/A 368892-14, REV A.