(1) The flight attitude is unstable, high and low, and it is difficult to adjust
Usually caused by unstable power output. The oil-powered drone checks the engine spark plug, carburetor or check whether the oil circuit is normal, and the electric drone checks whether the power supply and motor are faulty.
(2) When manipulating the drone operation, it is found that the fuselage is always tilted or turned in the same direction
First check whether the initial position of the remote control lever is zero. If the remote control is normal, check the steering gear or ESC for faults.
(3) When the unmanned helicopter is operating, it suddenly rotates and cannot be controlled
Usually caused by tail rotor failure. In addition, because the vertical descent speed is too fast, the fuselage sinks into the airflow vortex, which also causes the fuselage to rotate uncontrollably.
(4) When the drone enters the automatic driving mode, the fuselage suddenly loses control
Usually due to the failure of the positioning system or the sensor, you should immediately switch back to manual and return to landing.
