collisionproblem with coptercave

Hi buddies, I have a little problem with collision between the helicopter and the cavewalls.
Due some animations I mess upp the logicbricks a little…

I have another question too; it is any ways to then I turn around the copter “with ipo-animations” with spacebutton, how I just can press it onces, and its turn around without turn back again?
Hard to explain, u most download and test it by urself, u will understand…

here is the download

BTW, this is a new project about the coptercave… More info about that comes in a near future.

thx for taking ur time to help me with this project… //yeahman :o