middle marker en · NOUN
Meanings
- 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.
Forms
| Spelling | Features | Labels | Source |
|---|---|---|---|
| middle markers | Number=Plur | lexicographic |
Coordinates
fan marker · outer marker · inner marker