Supplement Alaska is a civil/military flight information publication issued by NOAA every 56 days. It is a single volume designed for use with the Enroute Charts, Alaska Terminal Area Chart, World Aeronautical Charts, and Sectional Aeronautical Charts. The Supplement Alaska contains an airport/facility directory, airport sketches, communications data, weather data sources, airspace, listings of navigational facilities, and special notices and procedures.

The volume is side-bound 5 3/8 x 8 1/4 inches. Revised every 56 days.