Which term describes a system that provides current FAA weather and flight plan filing services to pilots via PC or modem?

• A. Distance Measuring Equipment (DME)
• B. Direct User Access Terminal System (DUATS)
• C. Differential Global Positioning System (DGPS)
• D. Dihedral

Answer: (D)

Direct User Access Terminal System (DUATS) lets pilots pull current FAA weather data and file flight plans electronically from a PC or modem. It was designed to streamline preflight planning by providing official weather briefings (such as METARs, TAFs, winds aloft, NOTAMs) and the ability to submit a filed flight plan directly to air traffic services. The other terms describe unrelated concepts: Distance Measuring Equipment is a radio navigation aid that measures distance to a beacon; Differential GPS enhances GPS accuracy for navigation; dihedral refers to the upward angle of the wings, which affects roll stability rather than weather or flight planning systems.