For planning a mission in the United States, which reference provides supplementary airfield information?

For planning a mission in the United States, which reference provides supplementary airfield information?

• A. AP/1
• B. IFR Supplement
• C. A/FD
• D. AIM

Answer: (A)

Knowing which FAA publication provides airport-specific data used when planning a flight in the United States is essential. The AP/1 entry, the Airport/Facility Directory, is the source that contains supplementary airfield information. It includes practical details for each airport such as runway lengths and conditions, available lighting, services (fuel, maintenance), communications frequencies, hours of operation, and other notes that help you plan a safe, informed field visit.

The IFR Supplement, by contrast, focuses on instrument procedures and minimums for IFR operations, not general airport data. The Aeronautical Information Manual (AIM) covers broad informational topics about airspace, navigation, and procedures but does not supply the specific, field-by-field details you’d need for planning a mission. So, for supplementary airfield information, AP/1 (Airport/Facility Directory) is the best reference.