Thread:SlyCooperFan1/@comment-1713909-20160913104853/@comment-1713909-20160916092329

Like I said, I definitely believe it has to do with how many A-ranks you have. Six for the Asterozoa, and eighteen for the Erne. In my second playthrough, I made sure to A-rank every single mission in the campaign, and I got those two planes after those specific requirements. (I was mostly doing this to ensure a Geopelia unlock, but this helped out in a different way as I would later discover). Might do some experimentation with this to see if I can turn up reliable results.

the fact that i am apparently the best person who knows ac3 on this wiki is really sad I made a reply on it. I'd like to stress that this, as well as most of my research, involves the export version. The Japanese version seems to be much different (Though it's a bit more simple in how it gives you planes; from what I can see, you just get specific planes for the branch you're on at certain points without having to faff around with A-ranks, at least when it comes to normal planes).