787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Flight Instruments, Displays Chapter 10
Head-Up Display System Description Section 22
Copyright © The Boeing Company. See title page for details.
D615Z003-TBC 10.22.1
10.22 Flight Instruments, Displays-Head-Up Display System Description
Flight Instruments, Displays22 Head-Up Display System DescriptionHead-Up Display System Description
Introduction
The airplane is equipped with two head-up displays (HUD); one for each pilot.
These displays operate independently from each other.
The system projects flight data symbology onto a transparent glass "combiner"
screen in the pilot’s forward field of vision. This allows the pilot to see the data
while looking through the forward windscreen.
The HUD and PFD receive flight data from the same sources, thus HUD
indications will match (repeat) PFD indications, though data format and
symbology may differ.
HUD Components
Overhead Unit
The overhead units are located above the head of each pilot. Each overhead unit
contains an LCD projector and the optics necessary to display flight data
symbology onto the combiner glass.
The HUD projector is monochromatic (green), so all information displayed on the
HUD combiner is green.
HUD Controls
Symbology and brightness controls are the only dedicated HUD controls. The
HUD system does not have an ON/OFF switch. The projector turns on and
displays the symbology by deploying the combiner. Manipulation of the FMS,
EFIS, and MCP controls determines data output on both the HUD and PFD.
Symbology Control Switch
Symbology control switches located on the outboard side of each control wheel
allow the pilot to alternate between the two display modes. The switches control
the respective pilot’s side only.
Brightness Control
The brightness control has two modes; manual (MAN) and automatic (AUTO).
The MAN mode is selected by pulling the brightness control knob outward.
Display brightness is then adjusted by rotating the control left or right as desired.
In the AUTO position, a light sensor detects the amount of ambient light and
automatically adjust the brightness level to maintain a constant display contrast.
August 14, 2009
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