As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE AIRCRAFT WAS IN HEAVY CHECK MAINTENANCE FOUND THE CENTER FUSELAGE LEFT INBOARD SEAT TRACK CORRODED BETWEEN FRAMES 84 AND 85. MAINTENANCE REMOVED AND REPLACED THE CENTER FUSELAGE LEFT INBOARD SEAT TRACK IAW EMB 170 SRM 51-41-01, 51-43-01, AND 51-43-02. THE AIRCRAFT IS OUT OF SERVICE IN HEAVY CHECK.