The primary use of aeronautical charts is for aerial navigation. These charts show communications and navigational facilities, limits of controlled airspace, hazardous obstructions, and special use or restricted airspace, along with generalized topographic relief of the area. The library has several series of aeronautical charts at different scales. The most detailed are the Tactical Pilotage Charts (TPC) at a scale of 1:500,000. For some areas of the world, these are the most detailed topographic maps in the collection.
Aeronautical charts are filed in two places. Some are filed at the beginning of the foreign maps in series. Because most of the aeronautical chart series cover the entire world, they are found with other map series with world-wide coverage at the beginning of the maps in series.