Something very wrong happened today at the field. The heli is flying great, I'm making it fly as fast as it will go and hard banks to keep it in sight. I bring it down for some nose in hover. after that I turned it away from me and was about to send it out when it just STOPED![X(] It just fell straight down 8" in front of me it was about 6" up before it fell. Good thing it wasn't moving when it happened. After checking for damage I plugged it back in to see what it would do. When to soft start began the main gear spun around a few times before it engaged the main shaft through the one way bearing. After lift off all seems well but I sure didn't press it by flying off with it, just a low hover and some fast up and downs. Range seems unlimited and I have never had a glitch that I know of. So has any one herd of the one way bearing causing the heli to drop this way?