middle marker

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middle marker

noun middle markers

A type of marker beacon placed to indicate the missed approach point of a Category I ILS or IGS approach (typically the point at which the glideslope descends through 200 feet AGL), triggering a continuous visual and aural sequence of alternating Morse code dots and dashes from the marker beacon receiver in the cockpit of an aircraft flying over the marker.
Similar: MM

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MLA

"middle marker." Wiktionary, via Micwyn, micwyn.com/word/middle%20marker. Accessed 6 Nov. 2026.

APA

middle marker. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/middle%20marker

Chicago

"middle marker." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/middle%20marker.

BibTeX

@misc{middle_marker_2026,
  title = {middle marker},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/middle%20marker},
  urldate = {2026-11-06}
}