marker beacons Flashcards
(11 cards)
what do marker beacons provide
RANGE over specific points along the approach
what does the marker beacons transmit at
75 MHz
where is the OM
Outer Marker
4-7 miles
what does the OM indicate
Outer Marker
indicates the position at which ten aircraft should intercept the glide slope at the appropriate interception altitude ±50’
what color and morse code is the OM
Outer Marker
blue & “- - -“
where is the MM
Middle Marker
~3500’ from the runway & usually 200’ above the runway threshold
what does the MM indicate
Middle Marker
indicates the approximate point where the gs meets the decision height (DH)
what color & morse code is the MM
Middle Marker
amber & “. - . -“
where is the IM
Inner Marker
between runway threshold and Middle Marker
what does the IM indicate
Inner Marker
glide slope meets the DH on a CAT ll ILS approach
what color and morse code is the IM
Inner Marker
white & “. . .”
