It was extremely awkward having all controls on one stick while the bumpers are unused while flying. Take a play from BF4 or gta in controlling aircraft and place rotation to the bumpers and allow side to side on stick to be movment instead of rotation. This would make atk choppers more effective and easier landinf and all round flight.
The number of threads, and the number of posts in those threads, that agree about the aircraft controls is becoming uncountably large.
I've added elsewhere, and I'll add here once more, that the problem isn't just the controls themselves (which are, indeed, terrible), but also the camera. While flying, regardless of heli or plane, the camera needs to always, always, always stay fixed in the direction and orientation of the user.