This drone was at stable flight at 30 ft about 25 miles an hour, and within a blink of an eye it went into a hard fast forward tumble. This was either a prop issue or a seized motor, I got a motor obstruction warning in the app. There was no way to save or recover from this failure. It fell from the sky into a 5-acre field with pretty tall grass, but the impact was definitely something to see only wish I had the camera rolling at the time... There was debris everywhere, and just for the record I did not hit anything. This was either a hairline crack in the carbon fiber blades that snapped when I gave it the juice or a seized motor. This is the only two possibilities, that I can come up with, for the drone to go from solid stable flight, to an immediate out of control forward tumble..