Yesterday, I did something stupid. After flying my Phantom nicely over manicured lawns at a beach / garden park, I attempted to take off from a piece of wood on a small beach. I had used the Phantom on a lake beach earlier in the summer and was cautious about sand, so I wasn't very concerned. Almost immediately, the Phantom locked up and flipped over directly into the sand. When I picked it up, I noted lots of black grains stuck to the four motors, magnetically bound. While I sweated the situation throughout dinner and the evening, I looked up a YouTube video showing someone removing magnetic sand using keyboard cleaner putty: http://www.youtube.com/watch?v=WOHmUeNPGqk Rather than go out and look for that putty, I used some Model Magic putty that my kids had. For each motor, I unscrewed each of the 4 bottom screws and pulled the motor out of its well. I had to remove the black holder and the small brass colored ring from the bottom of the motor, then pull apart the cylinder. I carefully applied the putty to every part of the motor and used Q-tips to bring bits of sand up further along the magnets. It was painstaking work, but when I put it all back together, all moved smoothly. I just tested the quad in actual flight and it worked great -- probably a bit improved, actually, because I cleared up other grit that might have been in there. I found this video helpful for seeing the parts: http://www.youtube.com/watch?v=DJixomwlVUs I post this in hopes that none of you ever have to deal with this. I just wanted to record the steps I took so if you do run into this issue, you'll use the putty to lift the grit right out.