When is non-radar separation preferred over radar separation?

Non-radar separation is generally preferred over radar separation when it offers an operational advantage, such as increased capacity or when weather and other operational parameters make it feasible. In situations where non-radar methods can maintain adequate separation minima while managing traffic efficiently, controllers may use these techniques strategically to optimize airspace utilization.

Operational advantage can encompass various aspects, including reducing the workload on radar systems, enhancing safety margins during certain phases of flight, or allowing for more tactical approaches in specific environments where radar coverage is limited or not available. Hence, implementing non-radar separation effectively can align with operational goals while ensuring the safety and efficiency of air traffic.

While equipment failures and operational procedures influence the choice between radar and non-radar methods, the primary motivator for opting for non-radar separation remains its potential to provide benefits in operational contexts.