CAAP Private Pilot License (PPL) Operational Procedures (OP) Practice Test

Scanning for traffic in daylight relies on using peripheral vision and a systematic sweep of small sky sectors. Your central vision is great for detail, but detecting distant or small aircraft against a bright sky is more effective when you look slightly off to the side and let your peripheral retina notice movement or contrast. Move your eyes in small, quick steps to cover the sky around you, pausing briefly in each sector to check for any aircraft. This approach prevents tunnel vision and increases your chances of spotting traffic that might be missed by focusing straight ahead or scanning only a few points. Focusing on the horizon or fixating on one spot can miss aircraft above, below, or off to the side, whereas scanning small sectors with off-center viewing makes use of peripheral vision to detect others.