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Airspeed Scale during takeoff and the initial climb when the speed is within
the range displayed.
Reference Airspeed Table: Reference Airspeeds are displayed below the
Computed Airspeed Scale when on the ground and CAS is less than 40
knots.
Airspeed Trend Vector: The Airspeed Trend Vector shows as a variable
length line with a tail pointing toward the scale either above or below the
Computed Airspeed Scale Index. The line length and the position of the tail
indicates the predicted airspeed in 10 seconds. The Airspeed Trend Vector
shows after the aircraft is airborne for more than 3 seconds.
Ground Speed: The IRS Ground Speed is displayed in the lower left corner
of the display. Ground Speed is shown with the letters “GS” following the
number.
HGS® Pilot Guide for the Bombardier CRJ 700 Model 4200
9701-1153 Rev A November 2002 4-15
Figure 4-7:
PRI Mode Airspeed Symbols
Figure 4-8:
PRI Mode Airspeed Symbols
Reference
Airspeed Table
Ground Speed
Takeoff
Speed Marks
Airspeed
Trend Vector
HGS® Pilot Guide for the Bombardier CRJ 700 Model 4200
4-16 November 2002 9701-1153 Rev A
Primary Mode Altitude Symbol Group
See Figure 4-9 thru Figure 4-11. Table 4-3 gives the Primary Mode Altitude
Symbol Group.
Table 4-3: Primary Mode Altitude Symbol Group
PRI
Symbol
Ground
Flight
TO
Barometric Altitude Scale and Index ● ● ●
Barometric Pressure Setting ● ● ●
Selected Altitude ● ● ●
Selected Altitude Mark ● ● ●
Metric Altitude Readout ● ● ●
Radio Altitude ● ●
Selected Decision Height ● ● ●
Decision Height Message ●
Selected Minimum Descent Altitude (MDA) ● ●
MDA Alert Message ●
Vertical Speed ●
Runway Elevation ● ●
Barometric Altitude Scale and Index: Barometric (Baro) Altitude is
displayed relative to a vertical scale along the right edge of the display. The
Altitude Scale displays a 440-foot range with an Altitude Index at its center.
The overall range of the scale is -1000 to 50,000 feet with tic marks every
20 feet, labeled every 100 feet.
HGS® Pilot Guide for the Bombardier CRJ 700 Model 4200
9701-1153 Rev A November 2002 4-17
Barometric Pressure Setting: The Barometric Pressure Setting is
displayed directly below the Altitude Scale. The number is followed by
either “IN” for inches of mercury or “HPA” for hectopascals.
Selected Altitude: Selected Altitude is displayed in 100-foot increments
directly above the Altitude Scale.
Selected Altitude Mark: The Selected Altitude Mark travels vertically
along the Altitude Scale. When the Selected Altitude is within the displayed
range on the Altitude scale, double horizontal lines above and below the
hundreds component of the Selected Altitude are displayed.
Figure 4-9:
PRI Mode Altitude Symbols
Selected Altitude
Barometric
Altitude
Scale
Index
Selected Altitude
Mark
Barometric
Pressure
Setting
HGS® Pilot Guide for the Bombardier CRJ 700 Model 4200
4-18 November 2002 9701-1153 Rev A
Metric Altitude Readout: A Metric Altitude Readout is displayed below
the Altitude Scale to identify the altitude in meters; the letter “M” follows
these numbers.
Radio Altitude: Radio Altitude is displayed directly below the Flight Path
Symbol when Radio Altitude is less than or equal to 2,500 feet. If the Flight
Path Symbol is not displayed, the Radio Altitude is displayed relative to the
Aircraft Reference Symbol. It is displayed in 50-foot increments between
1000 and 2,500 feet, in 10-foot increments between 50 and 1000 feet, in 5-
foot increments between 10 and 50 feet, and in 1-foot increments between 0
and 10 feet.
Selected Decision Height: Selected Decision Height shows as “DH” that is
followed by numbers in the upper right corner of the display. Use the
left-side ARP (Air-Data Reference Panel) to set the Selected Decision
Height.
Decision Height Message: A Decision Height (DH) message is displayed
to the left of the Radio Altitude display when the selected DH has been
reached. “DH” flashes for 10 seconds and then is steady. The symbol is
removed at 5 feet, or if the aircraft climbs above the Selected DH plus 100
feet.
HGS® Pilot Guide for the Bombardier CRJ 700 Model 4200
9701-1153 Rev A November 2002 4-19
Figure 4-10:
PRI Mode Altitude Symbols
Radio
Altitude
Selected
Decision Height
Decision Height
Message
Metric Altitude
Readout
HGS® Pilot Guide for the Bombardier CRJ 700 Model 4200
　
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