Check out this new game with helicopter combat. Air to air, air to ground, cap bases and deploy troops.
Over 30 vehicles and all are available during this alpha test. Available now though Steam for only 10 bucks (American, that is)
Rotary wing aircraft are harder to control at first but once you get the hang of it, it's really fun.
I like it, I think you will too. Currently there are 4 maps, Afghanistan, Kosevo, and 2 Vietnam era.
They are adding new stuff all the time.