Seen the crazyist fly away ever on some ones 1st flight ever. It didn't even last the guy 5 minutes. I was showing some one how to fly there ran new fc40 tonight. and He got it up and flew it around for a big and brought it in for a landing every thing was fine except for we wanted to re set the course lock to face a different direction. manually rerecorded a new CL position with the S2 switch made sure we had good stead green led then took off again and it was then flying really weird and not responding to the controls right. So dude handed me the transmitter and it was indeed not flying right. it would not yaw at all but it was only about 100 feet up and about 200 feet away. and the controls didn't seem to be doing any thing. So i switched it in the fail safe and it hovered like its supposed to then started slowing going the other way. Then I wanted to retake control being it was not going towards home and when I switched it in to att and for a second and then in to pgs to retake control from fail safe it not only still headed in the same direction it was going but it went like a bat out off hell and just took off in a bee line fail safe didn't do any thing to help or turning off the tx it just took off WAY! faster then I ever seen a fc40 go and i have had mine at 52 mph and this was going faster then that. and at the speed it was heading it could of made it real far in time it still had to go on the battery. lamest thing I ever seen.