My phantom 3 advanced was flying perfectly normal for its first two flights, everything was great and It was steady as a rock. The 3rd flight however, it began as a normal flight, then suddenly after about 5 minutes of flying, it randomly took a hard left and began spinning and losing altitude rapidly. I tried to apply thrust but it was all for not. It hit my roof then landed on the ground. Can anyone please offer me some insight here? I have no Idea how or why this may have occurred.