As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE AIRCRAFT WAS IN FOR HEAVY CHECK FOUND LOWER LT SEAT TRACK BEAM AT CF1 FRS 23-34 CORROSION AND GOUGED. REMOVED AND REPLACED LT CF1 SEAT TRACK BEAM IAW EMB 170/175 SRM 51-40-02, SRM 51-41-02 AND SRM 51-43-01. AIRCRAFT STILL OUT OF SERVICE PENDING COMPLETION OF HEAVY CHECK. LEVEL 2 CORROSION.