It's called Lock-on (duh), you can buy it on the internet, and no.
Don't get the Flaming Cliffs version. Look up all the crap about copy protection breaking laws and ect for anything further on that.
There are only like 6 flyable aircraft and it's so realistic that any regular person will have trouble with it, not to mention the cockpits aren't interactive, meaning the whole thing is keyboard and joystick based.