Maximun age on date of application has recently been raised to 29. (I'm 29 and sitting my initial selection tests this coming Thursday.)
It seems from the majority of threads on this issue that most people aren't successful first time around. Regretably, this will be my first and only possible application.
I've been wanting to become an ATCO for a few years now. Does anyone have any idea of how many people get in first time?