As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TYS During a scheduled inspection the lower TCAS antenna was found with corrosion on the base. Maintenance removed and replaced the antenna, operational checked good. I.A.W.-EMB-AMM-34-43-03. Repair procedure was satisfactory and the aircraft will be released upon complection of inspection.