Yesterday for some reson I didn't know I was flying my b 1.0 vision plus and it was flying perfect and it was about 50 feet up and it just feel out of the sky. All the motors just stopped and it feel, one time it started to turn on but then shut off. It almost hithe a house next to mine. The battery got thrown out of the quad I can't find one prop. I think some how one prop came off in flight. I know it can't but that's how it feel down and I can't find the one prop. The two questions are any ideas why it crashed and the battery has three cracks in the plastic around thr battery, but it seems fine other then that. It charges fine and I just want to think if you think I can use it still. I popped the body back together and test flew the quad again and it flew great.