A few possibilities: 1) The accelerometers are not calibrated. The flyer is horizontal, but it thinks it isn't and it's trying to level itself. Don't take off if this is the case. 2) The accelerometers are calibrated, but the flyer is not horizontal. Here the flyer is trying to level itself, but can't as it's not flying. If you push it off the ground a few inches it will tilt and not be able to level itself because the low propeller turbulence is sucking the propeller to the ground. It will scoot across the ground sideways. Everything is OK though; just push it up a meter and it will level itself. 3) You have trim set so your remote is telling the flyer to fly in a particular direction. There shouldn't be any trim. It's too easy to bump those buttons and mess everything up. Checking that there isn't any trim is something to put on your flight check list.