Makes a flyable train that spawns and stops at one of the four airports in San Andreas. Once you jacked one you can fly to one of them or you can enter as passenger and wait untill it reaches an airport. The tracks are still on so you can't chose where you want to go and the train can still derail while in the air.
Very good! The only complaints I have are:
1 Sometimes when you enter the train as passenger the train can't get up the "slope"
2 You can't take off in a normal plane from the runways because trains spawn and hit you.