Had my first accident today thankfully on an open field with grass apex 10'. The odd part is my propeller flew off as I was accelerating and landed about 15 yards in front of me. Uploaded them to healthydrones and a few things came up. Drone wasn't damaged and made two flights after that with no issues. I always do a good preflight check with making sure the props are on snug. If someone can look at the log and give me a better idea, please.