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attack is increased by two degrees. The AOA Limit symbol is positioned on
the Flight Path symbol (boxed ends set on the Flight Path wings) when stick
shaker occurs.
Pitch Reference: A Pitch Reference shows during takeoff and climb with
the FCS Vertical Mode set to TO or TO/WS. This symbol gives the best
climb angle to use as a pitch attitude for takeoff climb. The pitch reference
is positioned by the flap position and the difference between the VR and V2
settings. This symbol shows on the display until the flaps are retracted, or
when the FCS Vertical Mode is changed.
Pitch Chevrons: There are two Pitch Chevrons located on the Pitch Scale.
They point toward level flight. One is located with the point of its “V” at
+30° (extreme pitch up), the other at -20° (extreme pitch down).
HGS® Pilot Guide for the Bombardier CRJ 700 Model 4200
9701-1153 Rev A November 2002 4-9
Figure 4-3:
PRI Mode Attitude Symbols
Roll Scale
Slip/Skid
Pitch
Reference
Aircraft Reference
Slip/Skid
AOA
Limit
Pitch
Chevron
HGS® Pilot Guide for the Bombardier CRJ 700 Model 4200
4-10 November 2002 9701-1153 Rev A
Primary Mode Airspeed Symbol Group
See Figure 4-4 thru Figure 4-8. Table 4-2 gives the Primary Mode Altitude
Symbol Group.
Table 4-2: Primary Mode Airspeed Symbol Group
PRI
Symbol
Ground
Flight
TO
Computed Airspeed Scale and Index ● ● ●
Selected Airspeed/Mach ● ● ●
Mach Number ●
Wind Speed and Direction ● ●
Selected Airspeed Mark ● ● ●
Maximum Operating Speed Tape ●
Low-Speed Cue Tape ●
Takeoff Speed Marks ● ● ●
Reference Airspeed Table ● ●
Airspeed Trend Vector ● ● ●
Ground Speed ● ● ●
Computed Airspeed Scale and Index: The ADC-based Computed
Airspeed Scale (CAS) displays a ±40-knot range with an airspeed index at
its center. The overall range of the Computed Airspeed Scale is 40 to 400
knots with tic marks at 5-knot increments between 40 and 200 knots and 10-
knot increments between 200 and 400 knots. The tic marks are labeled
every 20 knots.
Selected Airspeed/Mach: Selected Airspeed or Mach is displayed directly
below the Airspeed scale. The Mach Number is displayed as a decimal
point with two digits to the right.
HGS® Pilot Guide for the Bombardier CRJ 700 Model 4200
9701-1153 Rev A November 2002 4-11
Figure 4-4:
PRI Mode Airspeed Symbols
Selected
Airspeed/Mach
Computed Airspeed
Scale and Index
HGS® Pilot Guide for the Bombardier CRJ 700 Model 4200
4-12 November 2002 9701-1153 Rev A
Mach Number: The Mach Number is displayed directly above the airspeed
scale as an “M” that is followed by a decimal point and the computed Mach
speed of the aircraft. The Mach Number comes on when greater than 0.450.
It is removed when less than 0.400.
Wind Speed and Direction: The current wind speed and direction, derived
from the IRU, is displayed in the upper right corner of the display. Wind
Speed is displayed directly below the Wind Direction arrow.
The Wind Direction arrow is referenced to the aircraft’s heading and
indicates the direction from which the wind is blowing. For example, a
Wind Direction arrow pointing straight up (the 12 o’clock position)
identifies a direct tail wind. A Wind Direction arrow pointing to the right
(the 3 o’clock position) identifies a direct left crosswind.
The IRU based Wind Speed and Direction are displayed when the aircraft is
in flight and wind speed exceeds 3 knots.
Selected Airspeed Mark: The Selected Airspeed Mark travels vertically on
the Computed Airspeed Scale.
Maximum Operating Airspeed Tape: The Maximum Allowable Airspeed
Tape shows as a “checkerboard” tape growing downward from the top of
the Computed Airspeed Scale. The limit that the tape represents is a
function of the following: aircraft Vmo, flap position, and landing gear
configuration.
Low-Speed Cue Tape: The Low-Speed Cue Tape shows as a
“checkerboard” tape growing from the bottom of the Computed Airspeed
Scale.
HGS® Pilot Guide for the Bombardier CRJ 700 Model 4200
9701-1153 Rev A November 2002 4-13
Figure 4-5:
PRI Mode Airspeed Symbols
Figure 4-6:
PRI Mode Airspeed Symbols
Wind
Speed and
Direction
Selected
Airspeed Mark
Low-Speed
Cue Tape
Maximum Allowable
Airspeed Tape
Mach
Number
HGS® Pilot Guide for the Bombardier CRJ 700 Model 4200
4-14 November 2002 9701-1153 Rev A
Takeoff Speed Marks: Takeoff Speed Marks show on the Computed
　
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