Hi I'm new to this forum. Had my phantom 2 for a few months and was very confident with it until the prop detached suddenly whilst flying. It plummeted like a stone but fortunately survived with only minor damage to Zenmuse. I was used to just spinning the props on before flight thinking that the self tightening action would keep things ok. Obviously not! It was flying smoothly for a while before it happened and a captured frame from the Gopro footage clearly shows it flying off. Props were genuine DJI and well balanced. Post crash examination confirm prop and motor spindle sound. Anyone out there had a similar experience?