What is the maximum extent that Local Control must visually scan runways?

• A. Extent of the airspace
• B. Extent possible
• C. Extent of the runway
• D. Extent of the control zone

Answer: (B)

Local Control must visually scan runways to the extent possible to ensure that all aircraft and vehicles are safely cleared from the runway, especially during takeoffs and landings. This means that controllers should use their visual capabilities to monitor the entire runway area and adjacent zones as thoroughly as they can, taking into account any limitations such as obstructions, weather conditions, or their position in the tower cab.

The phrasing "extent possible" emphasizes the necessity of diligent visual scanning within practical limits. It allows local controllers to understand that, while they should strive to achieve a comprehensive view, they may not always be able to see every part of the runway due to factors like view obstructions or distance. This practical approach ensures safety and promotes effective operational procedures.

In contrast, focusing on the extent of the airspace, the runway, or the control zone could lead to misunderstandings, as these options imply more defined boundaries that could limit the breadth of scanning necessary for safe operations. Local Control's primary concern is to prioritize safety through the maximum visual monitoring possible.