Control Area
A control area is a controlled airspace extending upwards from a specified limit above the earth. In Canada, control areas include airways, terminal control areas, and the high-level airspace above FL180. Within a control area, IFR flights are subject to ATC control and separation service.
Types of Control Areas in Canada
- Low-level airways (Class E): Corridor-shaped controlled airspace along published airways at low altitude
- Terminal Control Areas (TCA): Class B or C airspace around major airports extending outward and upward
- High-level airways (Class A): FL180 and above; all IFR traffic; most stringent requirements
Related Terms
See also: Classification of Airspace, Airway, Control Area Extension.