A Terminal Control Area (TCA) is a block of controlled airspace that surrounds a major airport or group of airports, designed to protect and managehigh-density arrival and departure traffic.
This is a Canadian airspace designation (and ICAO standard), found in the Designated Airspace Handbook (DAH). TCAs exist in both the real world and VATCANFIR structures.
A TCA provides:
Controlled airspace for arrivals & departures Aircraft climbing out or arriving are kept inside controlled airspace, typically from around 2,000–3,000 feet AGL up to 12,000–18,000 feet, depending on the airport.
Radar separation environment TCAs are the airspace where Terminal (APP/DEP) controllers work.
Structured arrival/departure corridors These accommodate STARs, SIDs, and flow traffic efficiently into the associated aerodrome(s).
In Canada, TCAs are usually designated as:
Class C Major/Busy Airports or Terminal Areas ( CYYZ, CYUL, CYVR )
Class D Secondary Airports or Terminal Areas ( CYHZ, CYBG , CYLW)
Class E Tesiary Airports or Terminal Areas ( CYQM , CYQX, CYKA, CYXE )
