CF-xxx vs. C-Fxxx

On 2005-10-11, Steven P. McNicoll wrote:
But not all. People still call their plane registration 'their N-number'
when it's something like N23AD even though the last two characters are
letters.

You still don't understand. Every US registration has numbers, that's why
they call them N-numbers.

So which base are they in? And if they aren't base 10, why can't we call
Canadian registrations C-numbers?

--
Dylan Smith, Port St Mary, Isle of Man
Flying: http://www.dylansmith.net
Oolite-Linux: an Elite tribute: http://oolite-linux.berlios.de
Frontier Elite Universe: http://www.alioth.net