ATPL Theory - Marker Beacons Marker Beacons are stations on the ground. When you fly overhead they will let you know by means of a visual or a sound (can be both).
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Power Line Aircraft Marker Ball Fiberglass Warning Ball Spher - China Fiberglass Warning Ball Sphere, Fiberglass Aircraft Sphere Ball | Made-in-China.com
![Map Marker With Icon Of Airplane Royalty Free SVG, Cliparts, Vectors, and Stock Illustration. Image 18625492. Map Marker With Icon Of Airplane Royalty Free SVG, Cliparts, Vectors, and Stock Illustration. Image 18625492.](https://previews.123rf.com/images/bryljaev/bryljaev1303/bryljaev130300049/18625492-map-marker-with-icon-of-airplane.jpg)