fan marker

noun

An obsolescent type of marker beacon, usually used to mark en route airways but occasionally used as part of a non-precision approach, which radiates in a pattern that is considerably wider, from the perspective of an aircraft approaching the marker along the airway, than it is long (allowing an aircraft to pick up the signal from the marker even if slightly to one side of the airway's centerline).

Similar
FM
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Meanings

nounfan marker (plural fan markers)

plural fan markers

  1. aeronauticsAn obsolescent type of marker beacon, usually used to mark en route airways but occasionally used as part of a non-precision approach, which radiates in a pattern that is considerably wider, from the perspective of an aircraft approaching the marker along the airway, than it is long (allowing an aircraft to pick up the signal from the marker even if slightly to one side of the airway's centerline).

    Synonyms: FM

Synonyms & antonyms

nounAn obsolescent type of marker beacon, usually used to mark en route airways but occasionally used as part of a non-precision approach, which radiates in a pattern that is considerably wider, from the perspective of an aircraft approaching the marker along the airway, than it is long (allowing an aircraft to pick up the signal from the marker even if slightly to one side of the airway's centerline).

Similar
FM
Cite this entry
APA

fan marker. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/fan%20marker

MLA

“fan marker.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/fan%20marker. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “fan marker,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/fan%20marker.

Source: fan marker on Wiktionary, CC BY-SA 4.0.