MD-11 Flight Crew Operations Manual
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Aircraft General -
Description and Operation
Agen.10.21
Turning off a DU automatically causes the system to reconfigure the other DUs so
that the minimum data required for flight remains displayed. The DUs are also
reconfigure automatically when the aircraft is in an emergency power condition.
In an emergency power condition only DU1, DU2, and DU3 are powered.
Seven cue switches on the SDCP allow the flight crew to identify the system that
is generating alerts and/or warnings. Pushing a cue switch will cause the
associated system synoptic to be displayed on the SD.
When pushed, a CONSEQ switch on the SDCP will cause alert related
consequences to be displayed on the SD.
When pushed, the STATUS switch on the SDCP will cause all aircraft system
faults to be displayed on the SD.
If five or fewer DUs are operating, pushing the ND switch will cause the existing
SD to become an ND. If all six DUs are operating, THIRD NAV DISPLAY NOT
AVAILABLE will appear on DU4.
The RLS on top of the Captain's glareshield senses outside light. The RLSs on
each DU sense inside light. Inside and outside light levels are compared and DU
brightness is adjusted automatically.
Each of the DEUs receives data from aircraft sensors and systems. The DEU then
converts this data to graphic commands for display on the DUs. Normally DEU1
provides data for the Captain's DUs (PFD, ND, and EAD). DEU2 provides data
for the First Officer's DUs (PFD, ND, and SD). DEU3 is a hot spare.
In case of failure, any DEU can provide data for any DU. DEU selection is
accomplished with the EIS SOURCE selectors on the Captain's and F/O's source
input select panels. Any of the three DEUs can provide data for all six DUs, but
only one independent ND.
Colors
A consistent set of colors is used for all the displays to allow the flight crew to
readily recognize and associate various types of data. All information is conveyed
with distinctly shaped symbol as well as changes in color.
White is used for scales and associated figures and also denotes manual entry or
action. White symbology includes:
• Scales.
• Manually selected values.
• Manually initiated autopilot/autothrottle modes.
• Weather radar turbulence.
• Inactive schematic lines on the SD.
Cyan is used for status indication. Cyan symbology includes:
October 02, 2006
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