An aerodrome is defined by the Aeronautics Act as any area of land, water (including the frozen surface thereof) or other supporting surface used, designed, prepared, equipped or set apart for use either in whole or in part for the arrival, departure, movement or servicing of aircraft.
There are defined exceptions, but, for the most part, all of Canada can be an aerodrome.
Rules for operating an aerodrome are provided in Part III of the Canadian Aviation Regulations (CARs) under Subpart 301. The objective is to define the minimum safety standards that must be offered as well as to make provision for inspection by the Minister.