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 FLOORBEAM -Y317.9 BETWEEN FR 65 TO FR 67 AT AFT GALLEY AREA; REPLACED FLOORBEAM -Y317.9 BETWEEN FR 65 TO FR 67 AT AFT GALLEY AREA AS PER SRM 51-72-11 & DWG D53472814 REF NR 2018-283247.