Originally Posted by
mia1900fo
You dont have to be 21 to take the ATP written, it does expire in 2 years when you can upgrade but if you take the 121 written and get a job flying 121 the written doesnt expire.....
I'm pretty sure the FAR's require you to be 21 to take the written. The idea being that if you don't turn 23 before it expires there's no point (part 61 does not take into account the 121 rule).