Very neat start for a flightsim. Controls better than GTA:SA Toy Biplane, and I couldn't ask for more. Obviously needs more content, but you probably know that already.
The physics go crazy if you hit something face-first, and if you go zero acceleration - the plane goes backwards. Also I kinda expected Q and E to make you do a full barrel roll, not just flip. Also for now the usefulness of them is undefined. Maybe they could be changed to not flip, but rather roll, so that the player could have more freedom to dodge bullets?