What is the standard lateral separation for aircraft operating 50 miles or more from the monitoring antenna?

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Multiple Choice

What is the standard lateral separation for aircraft operating 50 miles or more from the monitoring antenna?

The fundamental idea is that radar-controlled airspace uses a fixed minimum lateral separation to keep aircraft safely apart. Five miles is the standard lateral separation used in radar operations, and this applies even when aircraft are 50 miles or more from the monitoring antenna, as long as they remain within the radar coverage and the surveillance data are reliable. This separation gives controllers a safe buffer against position and track uncertainties that grow with range, while still allowing efficient traffic flow. Options of three or four miles aren’t the published minima for radar airspace, and six miles would be more conservative than the standard. Hence, five miles is the best choice.

The fundamental idea is that radar-controlled airspace uses a fixed minimum lateral separation to keep aircraft safely apart. Five miles is the standard lateral separation used in radar operations, and this applies even when aircraft are 50 miles or more from the monitoring antenna, as long as they remain within the radar coverage and the surveillance data are reliable. This separation gives controllers a safe buffer against position and track uncertainties that grow with range, while still allowing efficient traffic flow. Options of three or four miles aren’t the published minima for radar airspace, and six miles would be more conservative than the standard. Hence, five miles is the best choice.

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