Whoops! Looks like he forgot to flip his F. Mode (Stunt mode) switch to "on" before he flipped it upside down... Either that, or he pushed up on the collective stick when he should have pulled it down as he was inverting.

I'm going with F. Mode switch in "off" position though. He seemed to be doing fairly well controlling it in normal flight.


ps. And those are called "Helicopters" not "Planes". Hint to whomever uploaded the video.