HARD! My FC40 just landed after its second successful fly home attempt, so once it landed I turned the transmitter back on to shut down the motors. As I walked up to it I almost dropped the transmitter but saved it from hitting the ground by pinning it against my stomach. Well as I pinned it I accidently hit the throddle and the quad began to launch. For some reason I thought something was wrong and it was out of control headed for a fly away. My natural reaction was to stick my hand out to stop it.... Don't ever do that. Did I mention I just put new 9" maytech carbon fiber props on? What a mess, I could probably use a few stitches hear and there but I chose not to. I plucked the carbon fiber chunks out of my pinky, cleaned everything, applied a fair amount of disinfectant/ointment and bandaged up. Ouch... Now I know why Hawks and raven fly from this thing when I get it close to them, these things are blenders in the sky.