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 LOWER SILL AT LEVEL STR 23R AND FR 66 AT AFT GALLEY AREA; REPLACED LOWER SILL AT LEVEL STR 23R BTW FR 66 AND FR 68 AT GALLEY AREA PER RM 51-72-11. WORK ACCOMPLISHED ON NR 2019-74709