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VERTICAL NAVIGATION
When vertical navigation is selected (VNAV), the following are displayed:
- FMS reference altitude
- Vertical deviation and scale
- Suggested vertical speed (circular bug)
VERTICAL SPEED FIELD
The vertical speed (VS) display consists of a vertical analog scale and pointer with a green “drag line”. A part-time digital
readout of the vertical speed is also provided. The VS pointer moves up and down the scale to indicate current VS. As the
pointer moves, the drag line appears to emphasize the VS.
The vertical speed scale has a range of ± 4000 fpm. A part-time digital readout of the vertical speed is displayed on either
the top or bottom of the vertical speed scale respective of climb or descent.
Selected VS shows on the VS scale as a reference bug, and as a digital readout on the automatic flight control system
(AFCS) mode field above the attitude ball.
FLIGHT INSTRUMENTS
Volume 2 Flight Crew Operating Manual May 06/2005
11-01-10 CSP 100-6 REV 2
PRIMARY FLIGHT DISPLAYS (Cont)
VERTICAL SPEED FIELD (Cont)
Selected VS only shows when the AFCS VS mode is active and the UP/DOWN wheel on the flight guidance panel is used
to set the selected VS. When VS mode is selected, the VS readout in the AFCS mode field appears. It is preceded by a VS
bug icon, and followed by an arrow. The readout, icon, and arrow remain in view as long as the VS mode is active. The VS
bug and display in the AFCS mode field show in cyan when commanded by the UP/DOWN wheel on the FGP. The readout
icon and bug are magenta when the FMS is in control.
The vertical speed scale is also used to display TCAS advisory deviations. The FMS vertical speed required (VSR) advisory
pointer is a magenta open circle, that indicates the minimum average VS required to climb or descend from the present
position to the next climb (or descend) altitude constraint. The FMS must be the active NAV source for the pointer to be
displayed.
RADIO ALTITUDE DISPLAY
The PFD radio altitude display is presented as both a digital and moving tape readout.
The digital readout is displayed from -20 to 2500 feet above ground level (AGL), in the lower center part of the ADI ball.
To set the RA/ BARO MIN, or MIN ALERT, push the REFS button on the DCP to display and scroll through the menu
pages on the PFD. Rotate the MENU knob to position the cyan cursor box around the selectable value for the RA/BARO
MINS. The PUSH SELECT button on the DCP selects the next MIN ALERT option in the sequence. Rotating the DATA
knob, on the DCP, increases or decreases the values to be set. To change a value, the cyan selection box must be moved to
that value. The selected value shows in large cyan text; non-selected text will show in small white text. The menu pages
are automatically removed from the PFD 20 seconds after the last activity.
RADIO ALTITUDE FLAG
If the radio altitude data is invalid, a red boxed RA label is displayed and the radio altitude tape and digit readouts
are removed.
RA MIN
The digital range can be selected from 0 to 999 feet and is set on the REFS menu. When the aircraft descends to decision
height, an amber boxed MIN indication is displayed when selected minimums are reached.
BARO MIN
BARO MIN has a range of 0 to 15 000 feet and is set on the REFS menu. The selected minimums will display in cyan as
MIN XXX RA or MIN XXX BARO, depending on which was set. The XXX represents the selected digital value.
As minimum descent altitude is approached, the cyan minimums pointer appears on the altitude tape. When the aircraft
reaches minimums, a flashing amber MIN label is presented on the right edge of the attitude indicator.
AIR DATA FLAGS
When ADC airspeed, altitude or vertical speed data is invalid, red air data flags are presented to replace the affected systems
information.
REV 2
FLIGHT INSTRUMENTS
Sep 13/2004 Flight Crew Operating Manual Volume 2
REV 1 CSP 100-6 11-01-11
AIR DATA SYSTEM
DESCRIPTION
Air data information is sensed by the pitot static system and total air temperature (TAT) probe. This data is processed by
the air data computers (ADCs) and sent to the flight displays, IAPS, and several aircraft systems. Cockpit controls include
the BARO SET knob, ADC REVERSION switch, several flight guidance panel (FGP) controls, and the reference speeds
(REFS) menu settings.
COMPONENTS AND OPERATION
Airspeed information displayed on the PFD include:
- Airspeed display
- Reference speeds
- Low/high/speed cues
- Airspeed trend vector
- Mach number display
The V1, VR, V2, VREF, VGA, and VT reference speeds are set through the REFS push button on the display control panel.
The SPEED knob, on the flight guidance panel (FGP) is used to set the cyan speed bug on the airspeed display.
　
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