MULTI-FUNCTIONAL DISPLAY (MFD)
Two basic navigation formats are available on
the multi-functional display (MFD): a partial
compass map display (MAP), and a plan dis-
play (PLAN)(Figures 16-37 thru 16-39). With
both of these formats, a window area can dis-
play system information, checklist or TCAS
(optional) on the lower portion of the MFD.
The MAP format provides a large 120° hori-
zontal situation presentation, and places the air-
craft position near the center of the MFD
display. A large weather radar presentation
can be displayed on the MFD MAP along with
waypoints, airports and navaids as selected by
the bezel controller buttons.
The PLAN mode is similar to the MAP mode,
except that is has a "North-Up" orientation at
all times, and has a 360° display. The PLAN
map mode may be used to construct a FMS
flight plan or route and it may be used inflight
to monitor flight progress along a FMS flight
plan. Radar is not available on the PLAN dis-
play.
MFD Map Mode
This format is the powerup default display on
the MFD, and is illustrated in Figure 16-37.
With MAP selected the following additional
annunciations and displays will be provided:
• Heading indication of the aircraft is pre-
sented on the MAP format as a partial
compass display. A digital readout of the
heading, enclosed in a box is displayed
at the top of the compass arc. A heading
select bug is also displayed, and is set
with the HDG knob on the flight guidance
controller.
• Heading Scale is presented as a + 60°
compass arc with tick marks at 5°, and nu-
meric identifiers every 30° as illustrated
in Figure 16-37.
• Heading Source will be the same as se-
lected for the on-side PFD. Heading
source will be annunciated to the right of
the digital heading readout if AHRS or
IC/SG reversion is selected.
• Drift Bug is presented as an unfilled tri-
angle/bug that rotates around the perime-
ter of the heading compass. The drift bug
data is provided by the FMS.
• An amber “CHK EICAS” message is dis-
played at the top of the MFD (Figure 16-
38), offset to the left of center. This message
is inhibited during takeoff and landing,
and is tripped by the wrap-around monitor.
• Lateral Deviation is displayed just above
the system page display area. The digi-
tal display represents displacement left or
right of desired course. An "L" or "R"
will similarly be displayed following the
distance in nautical miles. This display is
not available when TCAS or checklist
has been selected.
• Navigation source on the MFD is always
FMS (single FMS installed). If dual FMSs
are installed, only the on-side FMS can
be displayed on the MFD.
When weather radar has been selected for dis-
play the following items will be added to the
MFD format:
• Weather Radar Status is displayed to the
left of the display window and supports
four status fields as illustrated in Figure
16-38.
• WX Tilt Readout represents the tilt angle
of the weather radar antenna and has dis-
play limits of -16° to +15°.
• WX Fault Codes replace the tilt readout
when the weather radar is in the test
mode. The codes indicate faults within
the radar system and should be relayed
to maintenance.
• Weather Radar Video is presented in four
colors, representing different intensities
of radar returns.
L E A R J E T 4 5
P I L O T T R A I N I N G M A N U A L
16-64
FOR TRAINING PURPOSES ONLY
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