What minimum visibility is required for parallel runway operations?

The minimum visibility required for parallel runway operations is 5 kilometers. This standard is established to ensure safe separation and operational effectiveness when two aircraft are landing or taking off simultaneously from parallel runways. Adequate visibility is crucial for pilots to maintain situational awareness and to visually manage traffic in the vicinity of their operations.

In parallel runway configurations, the risk of wake turbulence and the need for proper spacing and separation between aircraft increases. Consequently, 5 kilometers of visibility helps mitigate these risks by providing pilots with a clearer view of other aircraft, runway markings, and potential obstacles.

While options such as 2 kilometers, 10 kilometers, or no minimum visibility may appear reasonable, they do not align with established safety protocols. Two kilometers may not provide sufficient visual separation, especially under certain weather conditions. Ten kilometers may be overly restrictive for operations that can safely occur in adequate visibility. Lastly, no minimum visibility is impractical, as it contradicts the fundamental need for pilots to see and avoid other aircraft and hazards. Thus, the requirement for 5 kilometers is grounded in ensuring safety and operational integrity in busy airspace.