, and AERO 2220 or AERO 2230. Required corequisite: AERO 3631. Introduces students to the many aspects of the Air Traffic Control System and the procedures and policies used in the National Airspace System. A final grade of B is required for continuation in the ATC-CTI program. Fall only. For complete ATC-CTI policy go to http://mtsu.edu/aerospace/cti.php