OPERATIONS MANUAL

Navigation Systems
ILS, MLS, GPS:
The aircraft is equipped with three multimode receivers (MMRs),
labeled as MMR L, MMR C, MMR R. They integrate two GPS sensor
units, and three ILS and MLS receivers:
• MMR L integrates ILS L, MLS L, and GPS L.
• MMR C integrates ILS C and MLS C.
• MMR R integrates ILS R, MLS R, and GPS R.
The ILS antenna system is also used by the MLS receivers. It consists
of one localizer capture antenna (which is also used by the VOR
receivers), three localizer track antennas (used when the localizer is
captured for the approach), three glideslope capture antennas (used
when the gear is up), and three glideslope track antennas (used when
the gear is down).
(The simulator models, among other things, the satellite acquiring time
of the GPS, and can model ILS antenna system misconfigurations,
radio interference, and glideslope antenna switch effects.)
Antenna locations
Localizer
capture
antenna
GPS
Three glideslope
capture antennas
and three localizer
track antennas in
the nose section
Three glideslope track antennas on the nose
gear doors (useable when the gear is down)
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