NC :
Sorry ol' mate slight correction again.
IN between us there are over 125 FOs. That equates to a 30% failure(Cat C)/Cat B/Cat D rate in that time.
That would only be correct if everyone passed first time. Since a good portion of those commands were achieved in the second attempt, you must also factor them into a true 'failure rate".
Granted they do eventually pass. However I think to paint a more accurate picture you must include all failures.
The reason being that a 1 or 2 year stint in the penalty box equates to less career earnings and a considerable amount of stress over and above the stress of the first command course. It also may mean losing out on a base as well.
Sorry, but I am learning to be pedantic.
FG