As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE IN HEAVY MAINTENANCE PERFORMING INSPECTION NOTED THAT THE MAIN CABIN SEAT TRACK CORRODED AT BS. 860 RBL 0.5. REMOVED SEAT TRACK AT RBL 0.5 BS 860, FABRICATED AND INSTALLED SEAT TRACK PER DWG. AE727-2-063 NO OTHER DEFECTS NOTED. AIRCRAFT WAS RETURNED TO SERVICE.