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 -Y450 AT AFT GALLEY AREA ON FRAME 65 (1 E/A); REF BP NR # 2018-374657 REPLACED FLOOR BEAM -Y464.8 BTW FR 64 TO FR 67 AT AFT GALLEY AREA AS PER SRM A320 51-72-11 AND DRAWING # D53472816.