To facilitate the analysis of evaluation of single flight of an aircraft after it is landed by providing a computer which calculates a position by receiving a GPS signal of a GPS receiver and a recorder which memorizes by receiving a positional signal of the computer so that a track of flight of the aircraft from its leaving the ground to the landing on the ground can be recorded.

During a time from leaving the ground to landing on the ground of an aircraft, a GPS receiver 2 receives a GPS signal from a CPS satellite through a GPS antenna 1 and sends it to a GPS computer 3. The GPS computer 3 calculates positional information such as longitude, latitude, altitude, etc. of the aircraft, and a recorder 4 memorizes this information. When a track of flight is investigated after the flight, map information of a flight region is input in a map information memorizing device 6. Next, when, for example, flight track mode of discipline mode is selected in an operation panel device 7, the recorder 4 outputs a flight track signal and displays a track of flight in figures on a display plate of a liquid crystal panel device 5. Moreover, the map information memorizing device 6 outputs a map signal of a flight region and displays a map in figures on the display plate.