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AHRS1 and the right PFD and MFD receive data from AHRS2.
When the switch is selected to 1, all displays receive data from AHRS 1 only. An amber AHS1 message is displayed on
both PFDs.
When the switch is selected to 2, all displays receive data from AHRS 2 only. An amber AHS2 message is displayed on
both PFDs.
RUDDER PEDAL ALTM
FWD BARO
AFT
HEADING
COMPASS
SLEW
L R
DG
PUSH
STD
CFO1101002_026
FLIGHT INSTRUMENTS
Sep 13/2004 Flight Crew Operating Manual Volume 2
REV 1 CSP 100-6 11-01-17
ATTITUDE AND HEADING REFERENCE SYSTEM (Cont)
GROUND ALIGNMENT
During the ground alignment process, the PFD displays the red ATT and MAG flags along with the message ATT/HDG
ALIGNING DO NOT TAXI.
When the alignment is complete, the messages are removed and the attitude sphere is displayed. The aircraft can be moved
at this time.
If excessive airplane motion is detected during a ground alignment, the AHRS automatically re-initializes.
FLIGHT ALIGNMENT
If an airborne alignment occurs due to power interruption, the system will take 40 seconds to realign. During the in-flight
alignment process, the aircraft must remain in a straight and level unaccelerated flight.
ATT/HDG ALIGNING
ATT
FLIGHT INSTRUMENTS
Volume 2 Flight Crew Operating Manual Sep 13/2004
11-01-18 CSP 100-6 REV 1
HEADING DISPLAY
DESCRIPTION
The aircraft is displayed on a partial compass card located at the bottom of the PFD. Data required to produce the display
is supplied by the AHRS system.
With an AHRS installation, magnetic or directional gyro may be displayed.
COMPONENTS AND OPERATION
HEADING INDICATORS
The heading indications are represented on the compass card, the display shows 360° from the current heading. The compass
card has 10° major indices, 5° minor indices, cardinal point characters at N, S, E, W, and numeric labels at 30° intervals.
At the top center position of the compass card is the fixed lubber line. The lubber line indicates the aircraft heading reference.
SELECTED HEADING REFERENCE
The selected heading reference is presented on the heading display as a heading bug, bug vector and heading readout.
The heading bug indicates the heading selected at the HDG knob on the flight guidance panel.
ATTITUDE AND HEADING FLAGS
When the attitude or heading data from the AHRS becomes invalid, warning flags are presented.
A red boxed attitude flag ‘ATT’ is displayed when the attitude information is invalid. All other attitude information disappears
from the PFD.
A red boxed heading flag HDG is displayed when the heading source is invalid. When the flag is in view, it replaces the
heading readout, the compass rose (or arc) is rotated to north-up, and the lubber line around the digital heading is removed.
FLIGHT INSTRUMENTS
Sep 13/2004 Flight Crew Operating Manual Volume 2
REV 1 CSP 100-6 11-01-19
NAVIGATION DISPLAYS
DESCRIPTION
The navigation indications on the primary flight display provide course, course deviation, bearing and distance information
from the selected navaid. The data is presented in a conventional HSI format.
COMPONENTS AND OPERATION
NAVIGATION DATA
Navigation data is displayed on the lower part of the PFD. The display includes:
- Navigation source indicator.
- Course display.
- Distance display.
- Station identifier.
NAVIGATION SOURCE INDICATOR
The navigation source indicator is presented in digital format. Navigation source is selected at the NAV SRC button on the
DCP. This opens a menu window vertically on the left side of the PFD. By repeatedly pushing the NAV SRC switch on the
DCP the available list will be shown.
- VOR 1/LOC 1
- VOR 2/LOC 2
- FMS 1/FMS 2
- OFF (no display)
COURSE DISPLAY
The selected source display is a three-digit display preceded by a CRS label.
The course range is from 1 to 360 degrees and is selected from the CRS knob on the FGP.
COURSE POINTER
The course pointer is an arrow that points to the course position of the compass card.
The course pointer is controlled by the CRS selector knob on the FGP. The on-side color is green and cross-side is amber.
LATERAL DEVIATION BAR
The lateral deviation bar indicates aircraft deviation from the selected course.
The lateral deviation bar moves from side to side and its position is read against the deviation scale.
TRACK POINTER
The track pointer is positioned on the compass rose or compass tape at the current aircraft track over the earth. The track
pointer is a green open circle shape. The difference between the track pointer position and the lubber line is the drift angle.
FLIGHT INSTRUMENTS
　
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