Canadian Domestic Airspace

As geographically delineated in the Designated Airspace Handbook (DAH), all airspace over the Canadian land mass, the Canadian Arctic and the Canadian archipelago, and over areas of the high seas.

Glossary: High Level Airspace
All airspace within the Canadian Domestic Airspace (CDA) at or above 18,000 ft ASL.
Glossary: Low Level Airspace
All airspace within the Canadian Domestic Airspace (CDA) below 18,000 ft ASL.
Glossary: Northern Domestic Airspace
As geographically delineated in the Designated Airspace Handbook (DAH), a subdivision of Canadian Domestic Airspace (CDA) commencing at the North Pole and extending southward to the northern limit of the Southern Domestic Airspace (SDA).
Glossary: Southern Domestic Airspace
As geographically delineated in the Designated Airspace Handbook (DAH), all airspace within the Canadian Domestic Airspace (CDA) commencing at the Canada-United States border and extending northward to the southern limit of the Northern Domestic Airspace (NDA).