Originally Posted by WhiteMorpheus

Leaving out the AA mainline RJ pilots the most junior NB CA at the end of 2017 was around 10,700 of 14,700, or 73% using your terminology. A newhire is 4000 attritions away from a NB CA upgrade in the most junior base which just the mandatory retirements cover in 5 years.

Thanks for the input, looks like I need to run the numbers again