Yesterday I was hanging out at the beach and planned to do some footage. The location was around 100 km from my place. So, got down to the beach, turned on Tx, then the bird, then calibrated successfully, started the motors manually and took off. I let it hover for around a minute or so, everything was fine, light winds (5-6km/h), 19 satellites at the present. I hit forward like I normally would to fly it straight forward altogether with ascending as well then suddenly it flipped and crashed upside down to the sand 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. Picture of the flight record for now, that was me trying to execute CSC when it flipped. I would try to pull the flight log later.