Flying today my copter fell into fail safe mode. came home and landed safely. In a different location I had the same issue. However this time it trimmed a tree on the way with one prop about 90' up. After the strike it took off and traveled roughly 300' straight away from me. I flipped it into Manuel mode and got control and flew it home. I have a few questions. First, How to I test my TX to ensure I can rely on it. After the strike how long would it travel to get the rotors back up to speed to catch itself. I cannot imagine it would be 300' I would not call this a fly away as it had a little help but I would like to understand why it took off and went so far and why I could get back in manual mode if it went into fail safe to begin with. All in all it was a good day. Counting my lucky stars. Just a set of props and a lot of stress. I have never tested my FS Mode before and I have always been scared to fly in Manuel Mode. Both of which were tested and passed today. The landing was not great but no damage I just wanted the bird home.