Plain English Meaning
A regularly updated FAA book that lists practical details about every public-use airport in its region — things like runway length, runway surface, available fuel, hours of operation, and radio frequencies.
Full Definition
An FAA publication, issued in regional volumes and updated every 56 days, that provides detailed information about airports, seaplane bases, and heliports in the United States, including runway data, lighting, services, communication frequencies, airspace, and remarks not shown on aeronautical charts.
Context Anchor
Pilots commonly use Chart Supplement U.S. during preflight planning and when checking airport details that are too detailed to fit on a .