I applied at 30, started the college at 31 and validated at 32.
As CV says, that me. You might be different. Or you might not. I'm not convinced age hs a factor, and if it is there are many many more things that will trip you up along the way before your age plays.
The first is perhaps the biggest hurdle - can't see NATS recruiting anyone at ATCO grade for a very very long time.