As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - DURING C-CK INSPECTION A SEAT TRACK SEGMENT BETWEEN FS559.80 TO 559.96 AT LBL 9 WAS FOUND TO BE CORRODED. MAINTENANCE REMOVED, FABRICATED AND INSTALLED A NEW SEAT TRACK SEGMENT, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE ON 09/25/2016.