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• Chart Supplement U.S. (formerly Airport/Facility Directory) 

• Notices to Airmen (NOTAMs) 

• Automated Terminal Information Service (ATIS) 

## Chart Supplement U.S. (formerly Airport/Facility Directory) 

The Chart Supplement U.S. (formerly Airport/Facility Directory) provides the most comprehensive information on a given airport. It contains information on airports, heliports, and seaplane bases that are open to the public. The Chart Supplement U.S. is published in seven books, which are organized by regions and are revised every 56 days. The Chart Supplement U.S. is also available digitally at www.faa.gov/air_traffic/flight_info/aeronav. Figure 11-1 contains an excerpt from a directory. For a complete listing of information provided in a Chart Supplement U.S. and how the information may be decoded, refer to the “Legend Sample” located in the front of each Chart Supplement U.S. 

## Notices to Airmen (NOTAM) 

<img src='content_image/582028.jpg'>

Time-critical aeronautical information, which is of a temporary nature or not sufficiently known in advance to permit publication, on aeronautical charts or in other operational publications, that receives immediate dissemination by the NOTAM system. The NOTAM information could affect your 

