The invention discloses a checking equipment of at least one flight administration device, which comprises the following parts: first connecting device in the first power indicator line of the first flight administration device, first switch device, wherein the first power indicator line provides to represent the first power signal; the first switch device makes the signal of power indicator of the first flight administration device switched; the switch device is excited to change the signal on the power indicator line, which indicates the supplied power distortion or defect of aircraft and/or other parts; the response of flight administration device can be inactivated and/or activated to test through output signal on the display or aircraft device.