As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TYS - A/C CURRENTLY IN C-CHECK WHEN INSPECTION FOUND THE SERVICE DOOR SILL CORRODED. MAINTENANCE REMOVED AND REPLACED THE FLOOR SILL IAW EMB 135/145 SRM 51-40-02. ALODINED, PRIMED AND PAINTED IAW CPM 51-21-07. ALL WORK WAS ACCOMPLISHED AND WILL BE RELEASED AT THE END OF THE CHECK.