As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE BASE VISIT FOUND THE LEFT UPPER SEAT TRACK SUPPORT AT FRAME 50 TO HAVE CORROSION AT 2 SPOTS. THE AIRCRAFT WAS REMOVED FROM SERVICE. REPAIRED LEFT UPPER SEAT TRACK SUPPORT AT FRAME 50 IAW EO EM-53MR-1617. THE AIRCRAFT WAS RETURNED TO SERVICE.