MD-11 Flight Crew Operations Manual
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Instrumentation and Navigation -
Controls and Displays
Inst.30.5
1. Heading/Track Display
Heading or track can be selected with the HDG/TRK button on the FCP.
Reference (magnetic or true) can be selected with the MAG/TRU switch on
each pilot’s ECP. Default is magnetic except at latitudes more than 73 degrees
when the default is true. When in the polar region (more than 85 degrees) map
orientation is FMS true track.
Selected heading or track is a filled white bug. A white dotted arc is turn
direction. A white dotted line goes from the aircraft to the bug and is removed
when a selected heading has been captured or the aircraft is in FMS NAV
with no preselected heading or track. Preselected bugs are the same as
selected except that they are outline only.
2. Drift Angle Pointer
Drift angle is a green diamond that points to track when in heading mode and
is removed when in track mode.
3. Distance/Time To Go
Distance (NM) and time (MIN) to the active FMS waypoint is displayed in
magenta.
4. Clock/Chronograph Display
Current time (UTC) is on top and elapsed time/timer is on bottom. The
bottom display defaults to elapsed flight time in cyan, unless timer is in
operation. Timer is displayed in white and is controlled by the TIMER knob
on the light control panel. Elapsed flight time is started at ground-to-air
transition and stops 30 seconds after air-to-ground transition. Elapsed flight
time is held until reset when a new V2 speed is entered on the FMS takeoff
page.
5. FMS Vertical Deviation
FMS vertical deviation is indicated by a magenta diamond, moving against a
scale on the right side of the map display. Full scale deviations is 1,000 ft. For
deviations more than 1,000 ft., half the pointer is visible in the direction of
deviation.
6. Half Range Ring
The half range ring is a white circle 2.0 inches in radius centered on the nose
of the reference aircraft. The bottom of the circle displays half of the full
range selected through the ECP.
October 02, 2006