Which control is used when weather conditions allow pilots to safely separate from other traffic in Visual Meteorological Conditions outside controlled airspace?

• A. Non-radar
• B. Advisory control
• C. Positive control
• D. Monitor

Answer: (D)

When weather and visibility are good enough to separate from other traffic by sight, air traffic control provides monitoring rather than actively separating aircraft. The controller watches the traffic with whatever information is available and can share useful information or traffic advisories, but does not impose or ensure separation—the pilots themselves are responsible for seeing and staying clear of others. This monitoring role fits the VMC outside controlled airspace, where pilots operate under visual rules and self-separation.

Non-radar control is used in areas without radar guidance and relies on procedural coordination rather than continuous monitoring. Advisory control means ATC mainly provides traffic advisories without enforcing separation. Positive control involves active separation by ATC within controlled airspace, typically with radar. Since the scenario describes visual, self-separation outside controlled airspace, the appropriate term is monitor.