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-1162 BEAM, FROM FS 68 AND FS 69. 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-1162 FROM FS 68 TO FS 69 IAW AIRBUS 320 SRM 51-72-11.