Marker Beacon
Definition
Radio beacons on the ILS approach path providing range information. Outer marker (blue, dashes) at 4-7 miles, middle marker (amber, dots/dashes) at 3500 feet from runway, inner marker (white, dots) at decision height.
Why Marker Beacon Matters for Pilots
Instrument knowledge is tested on every pilot certificate exam. Understanding how Marker Beacon works helps you interpret cockpit information correctly and recognize instrument failures before they become emergencies. This knowledge is especially critical for instrument-rated pilots flying in reduced visibility.
Exam Tip
This concept is commonly tested in instruments-related questions on FAA and EASA exams. Make sure you can explain Marker Beacon in your own words for the oral exam. Practice applying this concept to real-world scenarios, not just memorizing the definition.
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