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 FR 66 AND S-23R AT AFT GALLEY AREA; REPLACED LOWER SILL AND FASTENERS LOC AT LEVEL STR 23R AND BTW FR 66 TO 68 AT AFT GALLEY AREA IAW SRM 51-42-11 AND DRAWING D53480505 SRM 51-72-11. ALL WORK ACCOMPLISHED ON NR 2018-261204.