The majority of Air Units are produced at Airports, the only exception being Seaplanes, which are produced on Carriers. Air units use some fuel every day to stay in flight and will crash without fuel.
There are two categories of air units: helicopters and planes. Planes fly at a higher altitude than helicopters, so units that can attack helicopters may not be able to attack planes (for example, Battle Copters cannot attack Fighters). However, units built specifically for anti-air purposes (Fighters, Anti-Air, and Missiles) will always be able to attack planes.
|Transport Copter||5000||6||none||none||99 (-2)||2|
|Battle Copter||9000||6||Direct||6||99 (-2)||3|
|Stealth Fighter||24000||6||Direct||6||60 (-5/8)||4|
|Black Bomb||25000||9||Special||Special||45 (-5)||1|