Get these planes on and back off the ground as quickly as possible without any accidents. Click on a plane to give it a command. In the air, you can tell a plane to slow down or circle around. Once a plane begins to land, you cannot control it until it has refueled. After the plane has refueled, you can tell it to taxi to the runway and, when all is clear, give it clearance to take off. Make enough money to turn each airport into a success!