I had a similar issue about a month ago. I had taken off and was flying about four feet above the ground when for no apparent reason the P3P turned upside down and into the wet grass. I used the air compressor to clean as much water/grass as possible. I flew three more flights but on the third flight as I was about to land, the camera gimbal went berserk. The camera was still working fine. I discussed it with DJI and they finally told me to return it to them. I know it was received by them but I have heard nothing regarding the status. At the time I only owned one battery so I could not try that again. I did recharge the system but the but gimbal still did not work. DJI has had my machine longer than I have...
The reason of the crash is still unknown, I have seen nothing wrong with the bird or Tx then it suddenly happened. Unfortunately, everything is still in good working order except for four motors were covered in a bit of sand. I went home and tested it again after spending 3 hours cleaning all the sand in all 4 motors, it worked and I still wonder if I need to take this matter to DJI warranty. I am definitely not confident enough to fly my P3P now. I am now on my 47 flight and took off at 100% battery (30-cycle) when this happened. I am still lucky enough to keep it in one piece.
