787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Flight Instruments, Displays -
Head-Up Display System
Description
Copyright © The Boeing Company. See title page for details.
D615Z003-TBC 10.22.7
During visual approaches, a precise descent angle to the runway is maintained by
overlaying the glideslope reference line on the runway touchdown zone. Then
maintain the flight path vector symbol on the glideslope reference line.
Runway Edge Lines
Runway edge lines is a projection of an 8,000 foot long, 200 foot wide runway,
displaying the calculated position of the actual runway. The runway edge lines
symbol is composed of the runway edge lines with two tick marks that correspond
to the touchdown aiming point (glideslope intercept point). The symbol displays
in the decluttered mode only, and is enabled at a radio altimeter altitude of 300
feet, and removed at 60 feet.
The calculations depend on the selected course for the ILS/GLS approach, as well
as inputs from pitch, roll, heading, barometric altitude, localizer deviation,
glideslope deviation, and the glideslope angle and elevation from the FMS.
Ground Deceleration (Rate) Scale
A ground deceleration rate scale is shown on landing or when a deceleration is
sensed on takeoff. A vertical indexed scale and pointer indicate the actual
deceleration rate being achieved, as provided by the corresponding autobrake
setting (1, 2, 3, 4, MAX AUTO).
During takeoff, the scale is not displayed, but is added to the display if a
deceleration is sensed when the groundspeed is above 50 knots, and the airplane
is still on the ground. Once displayed, the scale is removed when groundspeed
decreases below 25 knots, the airplane begins accelerating, or the airplane lifts off.
February 15, 2010
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