outer marker
noun1
Aeronautics, Aerospace, Aviation, Business, Engineering, Natural sciences, Physical sciences A type of marker beacon placed to indicate the final approach fix of an ILS or IGS approach, triggering a continuous sequence of visual and aural Morse code dashes from the marker beacon receiver in the cockpit of an aircraft flying over the marker.
- Synonyms
- OM
- Hypernyms
- marker beacon
- Hyponyms
- locator outer marker
- Coordinate terms
- fan marker, inner marker, middle marker