Advisory control is provided by the marshal from check-in until the aircraft is advised of what, indicating positive control?

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Multiple Choice

Advisory control is provided by the marshal from check-in until the aircraft is advised of what, indicating positive control?

Advisory control becomes positive control when the aircraft is identified on radar. The marshal can guide the aircraft and issue information during check-in, but true positive control rests on ATC’s surveillance of the aircraft, which comes from radar contact. Once the pilot is advised that radar contact has been established, ATC has a precise, real-time picture of position and altitude and can issue binding instructions to maintain separation. Without radar contact, there’s no assured surveillance or authority to separate, so the control remains advisory. Radio contact alone doesn’t guarantee surveillance, visual signals depend on line-of-sight and don’t provide ongoing separation data, and no contact means there’s no control at all.

Advisory control becomes positive control when the aircraft is identified on radar. The marshal can guide the aircraft and issue information during check-in, but true positive control rests on ATC’s surveillance of the aircraft, which comes from radar contact. Once the pilot is advised that radar contact has been established, ATC has a precise, real-time picture of position and altitude and can issue binding instructions to maintain separation. Without radar contact, there’s no assured surveillance or authority to separate, so the control remains advisory. Radio contact alone doesn’t guarantee surveillance, visual signals depend on line-of-sight and don’t provide ongoing separation data, and no contact means there’s no control at all.

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