As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER REMOVAL CENTER FITTING WAS FOUND CORROSION ON LOWER SILL LOCATION BETWEEN FRAME 16 TO FRAME 20 AND AT LEVEL OF STRG 23 RT L=1", W=0.50" AND D= 0.002" APPROXIMATELY SSI 531189. REPLACED LOWER SILL LOCATION BETWEEN FRAME 16 TO FRAME 20 AND AT LEVEL OF STR 23 RT IAW SRM A320 51-72-11 AND DWG D53110339.