As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE THE AIRCRAFT WAS IN FOR HEAVY CHECK LEVEL 2 CORROSION AND GOUGES FOUND ON RIGHT INBOARD SEAT TRACK CF3 IN 10 SPOTS. MAINTENANCE REMOVED AND REPLACED THE RIGHT INBOARD SEAT TRACK CF3 IAW SRM 51-40-00. THE AIRCRAFT REMAINS IN HEAVY CHECK CMH FOR COMPLETION. FCS NOT AFFECTED.