Do your research as to your surroundings, make sure its a safe place to fly, I was in the country, visiting friends; Had a lot of open space, put choose to launch between two metal building. RTH, set, GPS, did every thing, but the Bird took off and just kept on going up not responding to controls. Tried three times and same thing happened, only thing it allowed me to do was bring it down manually. When I moved away from the buildings no problems. !00% difference in response.