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 SEAT TRACK + Y765 FRAME 62 + 10 " IN PASSENGER CABIN; REPLACED SEAT TRACK + Y765 LOCATED BTW FR 47 TO FR 64 IN PASSENGER CABIN IAW SRM 51-72-11 AND DWG D53472770. ALL WORK ACCOMPLISHED ON NR 2018-250263.