In what situation should radar separation be preferred over non-radar separation?

Radar separation should be preferred over non-radar separation when it provides an operational advantage and is permitted by workload and communication. This is because radar systems offer timely and precise tracking of aircraft, which allows air traffic controllers to make more informed and efficient separation decisions. Under optimal conditions, radar can significantly enhance situational awareness and provide better control over the airspace, reducing the risk of conflicts and improving overall safety and efficiency.

In operational scenarios where radar is available and the workload of the controllers permits its use, leveraging radar separation contributes to more dynamic and responsive air traffic management. It enables tighter separation standards, allows for real-time adjustments as conditions change, and facilitates quicker responses to any potential conflicts or changes in traffic patterns.

While other scenarios, such as involving passenger aircraft, poor weather conditions, or emergencies, do raise important considerations for safety and separation, the use of radar is fundamentally about enhancing the operational capabilities available to air traffic control, making it the preferred method when feasible.