Chart Supplement U.S. is which type of publication?

• A. A weather briefing document.
• B. A publication containing information on all airports, communications, and NAVAIDs.
• C. A flight planning form.
• D. A maintenance manual.

Answer: (B)

The Chart Supplement U.S. is a reference publication that provides detailed information about airports, their communications, and navigation aids. It lists airports (public and many private), the frequencies for air traffic control and advisory services, available services (fuel, hours of operation, ramp access, lighting), runway data, and the relevant NAVAIDs. Pilots use it during preflight planning and en route to look up airport facilities and contact information, making it the go-to source for airport and navigational information.

This differs from a weather briefing document, which focuses on weather data; a flight planning form, which is used to organize flight plan data; and a maintenance manual, which contains aircraft maintenance instructions.