I just received my phantom last week and after going over all the videos for pre-flight I went out to test it in my front yard. Since I am in a community and lots of trees, I decided to just go up move very little, and come back down. I had calibrated the GPS (thank goodness!) and it hovered no problem. So, since I do not have my gopro yet, I decided to go in and get my small camera and tie wrap it to it to try a video. I set down the controls after landing and ran into the house, got the camera... came back out and the phantom was GONE!!! It had taken off on it's won! Well I panicked and started running around looking in trees, going into neighbor yards and figuring I had just lost it after less than 5 minutes of flight. As I was frantically scrambling around hoping it was not already far from my house I heard some conversation going on behind my house! Seems the phantom had landed there (just missing landing in a tree) and the gentleman said he saw it come down and thought "somebody is missing an expensive toy". Talk about relief!!!! So I learned that I will NOT let the phantom out of my sight without first removing the battery!!!! Has this happened to anyone else?