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 +Y1292 LOC. BTW FR 12 TO FR 24 IN PASSENGER CABIN; REF BP NR # 2018-374613 REPLACED FLOOR BEAM LOC +Y1292 BTW FR 12 TO FR 24 IN PASSENGER CABIN AS PER SRM A32051-72-11 AND DRAWING # D53112812.