As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SAL - MAJOR REPAIR - DURING C4 CHECK DISCOVERED CORROSION ON THE L2 LOWER SILL AT FS 68, AROUND GIRT BAR AREA. CORROSION WAS FOUND OUT OF LIMITS IAW AIRBUS 320 SRM 53-41-14 FIG 101. LOWER SILL WAS REMOVED IAW AIRBUS 320 SRM 51-42-11. NEW LOWER SILL WAS INSTALLED BETWEEN FS 66 AND FS 68+10" AT Y1732 L2 DOOR IAW AIRBUS 320 SRM 51-21-11.