Need to get blades spinning on AI Only helicopters ?

Well I got the default helos (R-22, 206B, EH101), also setup as AI_Only, and have them on the ground in the mission. I just want them sitting there, not flying for now. Just one last question:

I downloaded the Schwietzer 300C AI_Only helicopter, and it sits on the pad with it's blades turning. How do I get the blades turning, by default, on my helicopters ?