"For safety purposes, we recommend you fly at least nine kilometres (five nm) from aerodromes (airports, heliports and seaplane bases) in order to remain clear of manned aircraft and most control zones. All aerodromes should be considered “No Drone Zones” if you do not have permission from Transport Canada."
http://www.tc.gc.ca/...rone-zones.html
Seems that way. Not sure why they'd use the word 'recommend'. though.