2. c. (3) (g)
(h)
VNAV Altitude Reference Bug/Readout - The VNAV altitude target
digital readout is displayed in cyan below the FD vertical mode
window (Figure 208). This target is active whenever an FD VNAV
mode is active and the target is different than the altitude
preselect value.
A cyan pointer shaped bug travels along the
inboard side of the altitude scale.
The bug position on the
scale corresponds to the VNAV altitude target digital readout.
This data is transmitted automatically by the FMS when VNAV is
active.
VNAV Altitude Alert Indications
- Approaching the VNAV ALT
target, the VNAV ALT bug and readout turn from cyan to amber
whenever actual altitude is within 1000 feet of the ALT SEL
reference indicators.
These displays remain amber until the
actual value is within 250 feet at which point they turn back
to cyan. Departing a selected altitude, the VNAV ALT SEL bug
and readout turn from cyan to amber whenever the current
altitude value is greater than 250 feet from the VNAV ALT SEL
reference indicators. If the excursion from altitude exceeds
1000 feet, the bug and readout return to their normal cyan
color.
(i) Barometric Altimeter Setting - The magenta baro set digital
readout is located directly below the altitude tape.
Each
pilot can set the barometric reference for the on-side DADC
through the baro set knob located on the display controller.
The pilot has the ability to select the altimeter setting for
display in either inHg (IN) or millibars (MB) as selected on
the display controller (Figure 204).
(j) Metric Altitude Display
- Directly below the baro set data
appears a white digital readout of altitude in meters.
This
display appears only if it has been selected on the display
controller (Figure 204).
(k)
Digital Air Data (DADC) Source Annunciation - The selected DADC
source is not annunciated if it is the normal on-side source
for that indicator.
As DADC sources are selected they are
annunciated in white to the right of the attitude sphere. When
the pilot and copilot source are the same, they are annunciated
on both displays in amber. Source selection for DADC is
accomplished through the display controller as shown in
Figure 203.
22-14-00
Page 220
Aug 15/91
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