How many feet apart must runway centerlines be for simultaneous departures in the same direction from parallel runways in a radar environment?

• A. 1500 ft
• B. 2000 ft
• C. 2500 ft
• D. 3000 ft

Answer: (C)

In a radar environment, the standard for runway centerline separation for simultaneous departures in the same direction from parallel runways is 2,500 feet. This distance is important to ensure safe operations and minimize the risk of wake turbulence, which can affect aircraft taking off from adjacent runways. The separation provides enough space for each aircraft to safely ascend without interference, especially given variables such as differing aircraft performance, wind conditions, and the need for the aircraft to gain altitude quickly and efficiently.

This guideline is key to maintaining operational safety and traffic management, as it allows air traffic controllers to effectively monitor and manage aircraft movements. In contrast, smaller separation distances would pose increased risks during simultaneous departures due to the potential for wake turbulence and other safety concerns.