1mag1n3,
It is 18 to apply and to start going through the selection system. Not sure if you have to wait until your 19 to start, but I wouldn't have thought so. It would probably have to coincide with being 19 to recieve a CPL, so you could start whilst 18 as long as you will be 19 by recieving the CPL which would be likely as the course takes about a year
