As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - DURING C4 CHECK DISCOVERED CORROSION ON Y-765 BEAM, BETWEEN FS 67 AND FS 68. CORROSION WAS FOUND TO BE OUT OF LIMITS IAW AIRBUS 320 SRM 53-00-14 FIG 102. MAINTENANCE REMOVED AND INSTALLED NEW FLOORBEAM AT Y-765 FROM FS 67 TO FS 68 IAW AIRBUS 320 SRM 51-72-11.