PLANES JUMPING OFF OF THE RUNWAY

[PEGASUS]

I've had some weird stuff happenning.

I haven't messed with my R.F. for a while, and now I find when I push "fly now" IT KICKS ME OUT OF THE REAL FLIGHT SCREEN COMPLETELY. And when I do get in and am ready for take-off, THE PLANE JUMPS OFF OF THE RUNWAY INTO THE AIR!

ANY HELP?

THANKS
RON