I hope it wouldn't be in there at all. It would be as ridiculous as putting a bad guy like Mr. Freeze in there. How the hell is Batman gonna fly a jet fighter through a city anyway?
I suppose a modified helicopter called the "Bat-Copter" would be more practical than a bulky jet aircraft but an updated version of the "Bat-Wing" from the 1989 film is just a fantasy of mine nothing more.