Hi, Im a video designer and a newbie in the drone world, so sorry for my lack of knowledge. I was flying my p4 all the day long up on forests and mountains without any problems, no big interferences, gps was ok but at some point , when he was out of sight, the aircraft disconnected and the screen went grey…after some seconds he asked if I want to use the RTH and I said yes. He never came back. I still got on my app the last videos and the last point recorded by the gps. So i sent some mountain climber to search for it both in the last registered point and the line from that point to the home point but they did not find it. I really don’t know where he could be landed or crashed… I don’t know if it was my fault to go so far away or what went wrong but still now is missing… Here u can check the flight log Phantom Log Viewer - PhantomHelp.com If you can help me to find out what happen or where he can be more precisely would be great, Thanks in advance.