Thank you all!!

@schnidrman
I mean the plane will flip to left or right(and the wing scratch the ground) every time I turn left or right using the rudder.
and Yes, I turned on NWS.

@Ice
usually 17 knots (not really sure) when I turn.
I can handle the plane and turn when throttle is at 84~87%.
But everything goes wrong when trying to execute a tight turn.

@Domestos
Thank you for the tips.
I check the controls assignments again, it is being defined as the post you gave me.
But still nothing happened.

I run editor from the launch menu, but it shows up a box named "Falcon Editor--Korea"


here is the pic.
But I still can't find the line.