Aviation chart: a chart used for aircraft flight or air route, which can cover a large area. It mainly includes basic terrain outline, flight route information, route code, route airspace division, route flight communication frequency, navigation station information, latitude and longitude coordinates, and restricted airspace information equal to route flight related data information; Generally divided into high-altitude circuit diagram and low-altitude circuit diagram. The content of the circuit diagram is relatively simple, and you can understand it by looking at the legend. The scale is generally 1: 1, 000,000;

Profile map: The general area map is an enlarged map of some areas with dense flight activities and complex airspace, which makes the content clearer and more detailed. It is basically the same as the route map, covering 340 miles, and the scale is1:500,000, which is not repeated here.

Special chart: a chart for special purposes.