2. The plane is set to novice mode, and there is no GPS signal around;
3. The error of the aircraft sensor is too large, and the red light of the aircraft taillight is always on;
4. The self-check of electric adjustment fails, and the tripod LED yellow light is always on;
5. Determine the parameters of the aircraft battery;
6. The compass error is too large and needs to be calibrated;
7. The altitude in the flight control parameters is 7. App is set to "0" meters.