interestingly the 737-700er can fly from a class 2 airport. md81s are the largest by capacity that can fly from class 2. on extremely low volume short routes i use cessna 421s and on most others emb120s. for bigger bases e175e2s are very good. also,e190e2s can fly a looong ways for their size. sorry if i got a little off topic with the emb120-cessna421