noun
aeronautical chart
A specialized map used for air navigation, showing airspace structure, radio navigation aids, and other flight-related information.
パイロットは出発前に航空図を確認する。
The pilot checks the aeronautical chart before departure.
地図 is a general map for land, whereas 航空図 is a specialized chart for aviation.
Compound of 航空 (こうくう, 'aviation') and 図 (ず, 'chart, map').