Well theres two problems that come to mind off of the top of my head:
1: your engines not running/turned up to full power
Fix: To fix just either hit the addition sign on your keboard to give it power. This is a temporary soultion, as it is a hastle to do, if you go to options>>map controlers(i think), scroll down till you see throttel 1, then it will tell you to set what button you want, choose z-axis if your joystick has a throttle. If it doesn't then set it to a button(s) on the keyboard. While you're in this mode, you should also set your y and x axis(if not already set) go up till you see it says x-axis, and set it to roll (airlon) and then sett the y axis to pitch(elevator) and you're set to go. if your engine isn't running, simply press e
2: your graphix aren't working correctly
To fix this, you might have to expirament around, go under the website and browse around fixing things to make it lower detail. To tell if graphix is your problem, jsut see if the enemy planes are flying around and actually moving. if not its a surefire thats the problem
while youre under the editing process, you'll notice you have minimal ammo, to change this, go to options-arena settings-environment-arena settings-power ammo mult, set multiplier to 10.
*democracy is a mob rule, where 51% of the people have rule over the other 49*