I don't know. It just has too large a turning radius. Every time I try to pull it tighter, slowing down or using a little rudder, it stalls violently. In a straight line, it isn't any faster than the best fighters. Diving and trying to get lead in a target is damn hard. Congrats if you can do it consistetly. I keep trying this plane and the 51 in practise hoping to find some trick or something that would get my American fighters into the combat hunt. False hope so far. They just won't turn in sharp enough and that stalling is a bitch. Maybe the blackouts will help these two become more effective in anything other than strike, which hardly anybody is playing in sim.