Which unit is used to express the proximity of traffic to LUAW in flying distance reporting?

• A. Flying miles
• B. Nautical miles
• C. Statute miles
• D. Kilometers

Answer: (A)

Proximity reporting in flight uses the term flying miles to describe how close another aircraft is to your position on the air, measured along the flight path. This distance gives a practical sense of air-to-air separation and is the way pilots interpret nearby traffic in the cockpit, such as when referencing a fix like LUAW. While nautical miles are the standard unit for most navigation and ground-based distances, flying miles specifically convey in-air closeness for traffic reports. A smaller number means the traffic is nearer and requires closer vigilance, while a larger number indicates more separation.