True North, originally when they were handing out the country codes Canada was given C, followed by a four letter suffix beginning with F or G. Since there weren't very many aircraft to register back then, the powers that be simply used CF-XXX. The reason it became C-FXXX or C-GXXX was that about 1970 or so, since there are only about ten thousand combinations of CF-XXX and this combination was becoming saturated, they decided to use the original allocation.
Code Blue, right on, buddy!
BTW, if they think there's lots of snow in YT this year, I landed on 34 in YT on June 6 1974, and after the usual ATIS blather they threw out this one: Runway ploughed full length, 100 feet wide, snow windrows thirty inches high inside the lights.