As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE A/C WAS IN FOR HEAVY CHECK FOUND LEVEL TWO CORROSION AND GOUGED ON THE LT LOWER SEAT TRACK AT CF1, FR 23-34. MX REMOVED AND REPLACED LT LOWER SEAT TRACK BEAM AT CF1 FRAMES 23-34 IAW EMB 170 SRM 51-43-03. A/C REMAINS IN CMH FOR HEAVY CHECK COMPLETION. NO FCS AFFECTED.