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in place of airspeed tape.
Speed Reference Table (cyan)
Displayed on ground only.
Indicates reference speeds as set
using speed reference knob on the
air data reference panel.
IAS
VT 170
80
60
40
VR 136
V2 142
V1 131
Airspeed Indicator
0
29.92 IN
5000
1 2 4
1 2 4
0.0
200
200
BRT
V2 142
15 S
12
21
24 W
30
33 N
140 0 FT
100
000
100
ADF1
ADF2
TO
TO
FMS
CRS 239
4.2 NM
YUL
1
2
10
10
Vol. 1 12--30--10
FLIGHT INSTRUMENTS
Air Data System REV 3, May 03/05
Flight Crew Operating Manual
CSP C--013--067
Altitude Indications <1015,1029>
Figure 12---30---7
Altitude Readout (white)
Indicates airplane barometric altitude.
Preselect Altitude Bug (magenta)
Lines at coarse and fine tape
indicate preselected altitude as set
using altitude knob on flight control
panel.
Preselected Altitude Readout (magenta)
Indicates preselected altitude to nearest 100 feet,
as set using altitude knob on flight control panel.
Barometric Altitude Tape (white)
Moving tape with fixed window
(digital readout) that indicates
barometric altitude from --1,000 to
50,000 feet with a display of
450 feet.
Fine Tape
Marks at 20 foot increments.
Digits at 100 foot increments.
Coarse Tape
Small rectangles at 500 foot
increments.
Large rectangles at 1000 foot
Altitude Indicator increments.
2
800
900
000
100
200
Barometric Pressure Setting Readout (cyan)
Indicates selected barometric pressure expressed
in inches of mercury or hectoPascals, as set using
barometric knob and on air data reference panel.
Altitude Indicator
Metric Preselected Altitude Readout (magenta)
Indicates preselected altitude in meters.
Displayed when metric altimeter is selected on.
Metric Altitude Readout (white)
Indicates airplane altitude in meters.
Displayed when metric altimeter is selected on.
METRIC ALT
ON -- Metric altitude readout and metric
preselected altitude readout are displayed
on PFDs.
OFF -- Metric altitude readout and metric
preselected altitude readout go out.
Metric Altimeter Switch
Center Pedestal
METRIC
ALT
ON
OFF
Vol. 1 12--30--11
FLIGHT INSTRUMENTS
Air Data System REV 3, May 03/05
Flight Crew Operating Manual
CSP C--013--067
D. Altitude Alerts
The altitude alert system alerts the flight crew that a preselected altitude has been
reached or a deviation from a preselected altitude has occurred. When the aircraft is
cleared to change altitude, the preselected altitude is set on the PFD through the flight
control panel (FCP). There are three types of alerts that can occur:
S Acquisition mode
S Cross side tracking
S Deviation mode
Altitude Flag --- PFD <1015>
Figure 12---30---8
Primary Flight Display
Pilot’s and Copilot’s Instrument Panels
Altitude Flag (red)
Indicates altitude data has failed.
Appears in place of altitude tape.
Altitude Indicator
700
800
900
000
100
NEG
Negative Altitude
Flag (yellow)
Appears at altitudes
less than 0 feet.
Vol. 1 12--30--12
FLIGHT INSTRUMENTS
Air Data System REV 3, May 03/05
Flight Crew Operating Manual
CSP C--013--067
Minimum Descent Altitude Indications <1015>
Figure 12---30---9
Minimum Descent Altitude Alert (amber)
Indicates that airplane has arrived at
minimum descent altitude.
Minimum Descent Altitude Pointer (cyan)
Indicates MDA, as set on the air data
reference panel.
Disappears when out of range.
Flashes during MDA alert.
Minimum Descent Altitude Readout (cyan)
Indicates MDA as set on the air data
reference panel.
Vol. 1 12--30--13
FLIGHT INSTRUMENTS
Air Data System REV 3, May 03/05
Flight Crew Operating Manual
CSP C--013--067
E. Acquisition Mode
Altitude alerts are inhibited in approach mode, when glideslope is captured and there
are valid autopilot steering commands. The ADC will set a one second acquisition alert
warning (altitude C-cord warning aural) and flash the preselected altitude readout when
the present altitude is within ±1,000 feet of capturing the preselected altitude. The
readout will stop flashing when the altitude is within ±200 feet of the preselected
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