As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LT OVERWING REFUELING PORT ACCESS CUTOUT FOUND CORROSION. LT OVERWING CORROSION AROUND FUEL FILL PORT WAS LOCALLY BLENDED TO CREATE TWO FLAT SURFACE WITH CONSTANT THICKNESS OF 0.210" AND 0.250" TO ALLOW FLAT SEATING OF TWO CUSTOM FILLERS. THE MIN THK WAS 0.207". EXTERNAL REPAIR DOUBLER INSTALLED AS PER EN1089-17, REV-.