As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON FUSELAGE SKIN IN AREA OF THE LAVATORY VENT PORT. CORROSION WAS REMOVED BUT DAMAGE EXCEEDED 2 INCHES IN OVERLAPPED SKIN & MORE THAN THREE FASTENERS HAVE BEEN BLENDED ON. REFERENCE B737-53-032277 FOR DETAILS. COMPLETED INSTALLATION OF FILLER & DOUBLER IAW EA 256022, DATED NOVEMBER 17 2015.