1. Place into map player as pilot
2. Place into map the Jet, for example the FA-181 Black Wasp
3. Begin to climb the ladder and press simultaneously Shift (the button is starting the Jet engine) The plane will start to accelerate immediately, even if the player has not yet taken the pilot's seat!

or

1. Place into map player as pilot
2. Place into map the Jet FA-181 Black Wasp
3. Sit in the cab of Jet and wait until the animation of getting pilot position will is fully completed and after this turn on the engine (Shift-button)