What is the required lateral radar separation for aircraft above FL600?

• A. 5 miles
• B. 10 miles
• C. 15 miles
• D. 20 miles

Answer: (B)

The required lateral radar separation for aircraft flying at or above Flight Level 600 (FL600) is established as 10 nautical miles. This distance is necessary to ensure safe separation between high-altitude aircraft, where the risks associated with turbulence and wake turbulence are greater due to their speed and altitude.

This lateral separation distance allows air traffic controllers to effectively manage the increased complexity and volume of traffic at these elevated flight levels, ensuring that aircraft maintain enough distance from one another to prevent potential collisions or other incidents. In comparison, the standard lateral separations used at lower altitudes are typically smaller, reflecting the different density and operational characteristics of air traffic at those levels.