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 FROM FR 66 +4 " TO FR 67 + 16" BTW -Y1262 TO -Y1162 AT AFT GALLEY AREA; REPLACED FLOORBEAM FROM FR 66 + 4" TO FR 67 + 16" BETWEEN -Y1292 TO -Y1162 AT AFT GALLEY AREA. REF NR 2018-283244