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 LT SEAT TRACK BEAM EXTENSION CORRODED BETWEEN FR 85-87. MX REMOVED AND REPLACED LT SEAT TRACK BEAM EXTENSION IAW EMB 170/175 SRM 51-43-01. PN 170-65669-003. A/C REMAINS IN CMH FOR HEAVY CHECK COMPLETION.