What is one scenario in which non-radar separation might be preferred?

Non-radar separation may be preferred in scenarios that offer an operational advantage, particularly where air traffic management can benefit from less reliance on technology. In certain cases, such as when operating in remote areas or regions with limited radar coverage, air traffic controllers can use procedural separation methods.

Operational advantages can include allowing aircraft to maintain sufficient distances during certain phases of flight, such as during en-route operations where radar may not be available or is less effective. Additionally, non-radar separation can facilitate the management of flight paths in complex airspace without radar, ensuring safety while optimizing traffic flow.

In contrast, scenarios like low visibility conditions or high traffic volumes typically require more precise maneuverability and monitoring that radar systems can provide. If radar fails, air traffic controllers would need to revert to non-radar methods to maintain separation, but this is more of a contingency than a preferred operating mode.