As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE, CORROSION WAS DISCOVERED ON FLOOR BEAM -Y765 AT LEVEL FR 20 IN PASSENGER CABIN; REPLACED FLOOR BEAM -Y765 AT LEVEL FR 12 TO FR 24 IN PASSENGER CABIN IAW SRM A320 51-72-11 AND DRAWING B 531 12812 AND D 531 - 10900.