As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE AC WAS IN FOR HEAVY CK FOUND PAX CABIN FWD FUSE 2 FLOOR STRUCTURE CORROSION FOUND AT CROWN SECTION OF SEAT TRACK FRAME 17 RBL 12" AREA. MX REPLACED CROWN SECTION OF SEAT TRACK PN 170-03263-001 FRAME 17 RBL 12". IAW SRM 51-43-03/04. AC REMAINS IN YRQ FOR COMPLETION.