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, LEVEL 2 CORROSION WAS FOUND ON THE LT SEAT TRACK BEAM FORWARD OF FRAME 86. MAINTENANCE REMOVED AND REPLACED THE LT SEAT TRACK BEAM FORWARD OF FRAME 86 IAW EMB 175 SRM 51-41-01 & 51-43-01. AIRCRAFT IS CURRENTLY STILL OUT OF SERVICE FOR HEAVY CHECK COMPLETION.