As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TYS DURING A SCHEDULED 1-C INSPECTION THE LOWER TCAS ANTENNA WAS CORRODED. MAINTENANCE REMOVED AND REPLACED THE TCAS ANTENNA IAW EMB 135 AMM34-43-03, PERFORMED OPS CHECK IAW EMB 135AMM 34-43-00. ALL WORK WAS ACCOMPLISHED AND WILL BE RELEASED UPON COMPLETION OF THE C-CHECK INSPECTION.