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inner marker
Verk. balise intérieure; radioborne intérieure
 Englisch Thesaurus
Inner Marker
Abkürz., Schott. IM
inner marker
Luftf., Amerik. A marker beacon used with an instrument landing system ILS CAT II precision approach located between the middle marker and the end of the ILS runway, transmitting a radiation pattern keyed at six dots per second and indicating to the pilot, both aurally and visually, that he/she is at the designated decision height DH, normally 100 ft above the touchdown zone elevation, on the ILS CAT II approach. It also marks progress during a CAT III approach.
Inner Marker: 4 Phrasen in 2 Thematiken
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