FAA Ground School Practice Test

What is the most effective method of scanning for other aircraft during daylight hours?

1. A series of short, regularly spaced eye movements to search each 10-degree sector

2. Constantly moving the head to track all aircraft

3. Using a radar to detect other aircraft

4. Relying solely on peripheral vision

The correct answer is: A series of short, regularly spaced eye movements to search each 10-degree sector

The most effective method of scanning for other aircraft during daylight hours involves a series of short, regularly spaced eye movements to search each 10-degree sector. This technique is beneficial for a couple of key reasons. First, it allows pilots to cover a wide field of vision systematically, ensuring that no area is overlooked. By focusing on a specific part of the sky for a brief moment, the pilot can detect any visual cues, such as the presence of another aircraft, which might otherwise be missed with a more haphazard approach to scanning. Second, this method helps prevent eye fatigue, which can occur with constant movement or prolonged focus on distant points. Dividing the sky into specific sectors keeps the pilot's attention sharp, increasing the chance of spotting potential conflicts well in advance. While methods that involve constant head movement or relying on radar can complement visual scanning, they may not be as effective for maintaining attention and focus on the wide visual area necessary to notice all potential aircraft in the vicinity during daylight conditions. Thus, the structured approach of scanning in sectors is most effective for ensuring situational awareness.