it's a good idea to have a joystick plugged in aswell as the keyb/mouse for this. all vehicles are much better with a stick, even the ground vehicles. as long as you're driving at least, and not commandeering.
amazing games. really loving this expansion, the performance doesn't seem as good as the 1.07 patch with regular arma2 and it seems to look a bit poorer and there is less going on graphically of course, so that's a bit weird. very very nice new campaign, the new tutorials are great. I've spent quite a while just unlocking stuff in the armory again aswell hehe, good fun.