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inner marker
transp.	Platzeinflugzeichen n; Innenmarker n
English thesaurus
Inner Marker
abbr., scottish	IM
inner marker
avia., amer.	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: 3 phrases in 1 subject

Communications

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