As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING THE REAPPLICATION OF THE AVDEC SEALANT CORROSION WAS FOUND ON THE LT SIDE FLOOR STRUCTURE FS 449.85 AND APPEARS TO RUN UNDER THE POST JUST FWD OF THE LT SIDE EMERGENCY EXIT. BLENDED AREA AT LBL 45, FS 449 ON PRESSURE FLOOR SILL IAW GREO 601R-53-41-666. BLENDED AREA ON LBL 45, FS 449.85 ON FLOOR ANGLE IAW REO 601R-53-41-666.