787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Flight Instruments, Displays -
System Description
Copyright © The Boeing Company. See title page for details.
D615Z003-TBC 10.20.15
Auxiliary (AUX) Display
The AUX area outboard of each PFD consists of two distinct areas: clock/flight
information and an ATC datalink block. The clock and flight information is
located in the upper part of the AUX display and includes:
The ATC datalink block is located in the larger, lower part of the AUX display.
The datalink block displays uplinked messages, COMM system generated
messages, and flight information messages. (Refer to Uplink Message
in Chapter
5, Section 40, for additional information.)
Clocks
A clock is located on each AUX display. Each clock displays UTC time and date
automatically generated from GPS. In addition to time, the clocks also provide
elapsed time and chronograph functions. On power up, timer is set to 00:00.
Elapsed flight time starts automatically at weight off wheels and ends at weight on
wheels plus 30 seconds. When on the ground and v-speeds are entered into CDU
(PFD “NO VSPD” flag disappears) timer resets to 00:00. All clock functions
except the chrono function are identical between the two pilot stations. The pilots
have independent control of the chrono displays.
Display System Information Sources
Inertial Reference System (IRS)
The IRS is the primary source for attitude and inertial navigation position
information. The major components of the IRS are:
• two inertial reference units (IRU)
• two attitude heading reference units (AHRU)
Inertial Reference Units (IRU)
The IRU is the primary source for independent inertial navigation position
information. The IRU processes information measured by its internal gyros and
accelerometers and GPS inputs. (Refer to Inertial Reference Unit (IRU)
in Chapter
11, Section 20, for additional information.)
• flight number
• MIC readout
• transponder code
• SELCAL
• airplane tail number
• UTC time
• date
• elapsed flight time
• chrono dial and readout
February 15, 2010
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