2 flying 1

Hey guys I m new in multiplayer, please help me out~

Is it possible to have 2 person flying the same aircraft using 2 different computers at the same time, like having an instructor sitting next door and he can take control when he wants to.

Yep

What you have to do is:
1) Both players join the same multiplayer session
2) On the screen where you choose your plane, intentions...etc, one of you has to tick the box which says 'Share my aircraft'. The other player can just choose any plane.
3) On the briefing screen, the 2nd player has to click on the 'Join aircraft' button next to the other players information.
4) Then click 'Join session'

While in game, you can transfer control to each other by pushing Shift + T

Awesome!

Thanks for the help