As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE: CPCP TASK EVIDONCE OT CORROSION ON CENTRAL LINE FLOOR BEAM UPPER SURFACE TROM FR. '16 TO '18; ALL WORK ACCOMPLISHED ON STS WO W004054 NR N00492 REPLACED FLOORBEAM Y254 BTWN FR 12 TO FR 24 IAW A321 SRM 51-42-11 PAR 2E AND 2F.