You say you have a class offer via airlineapps... How does that work? Certainly, at some point, they will have to reach out to you via a phone call to firm up your start date, right? This might be your one opportunity to defer to a later, and hopefully 175, class. Express this preference when they call. Otherwise, your only choice is to try to call them ASAP, but from what I hear, they don't answer calls, do they? And even if you successfully get penciled in for a later date, there is no guarantee they wont file you into a CRJ class the day you show, along with all other 19 guys expecting the 175. Not saying that is likely, but it happens. Just so you're not naive about it.

All this said, I have spoken with one individual privately on this board, I wont tell you who, that was given the choice of either a sooner CRJ class, or a later 175 class. Of course everything I just said also applies to him. I'm not sure of the details on how he was to go about letting them know what he decides.

Best advise, just try your hardest to call them. Its only your life. If bothering them causes them to round-file your job offer, well did you really want to work at a place that vindictive and fickle anyway? Don't expect them to honor your request however. It may end up a take it or leave it type of deal, and for that I can't necessarily blame them, can you?

Interestingly, I had a similar concern when I was hired. I was able to talk with the recruiter. I was 'rightfully' told... You will take what you get and like it boy!. But then a foreign student's paperwork was incomplete and I got called 18 hours before start, to show as an alternate. I was ecstatic!!! My girlfriend was in that class, who cares what the airplane or base was!!!!