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Volume 2 Flight Crew Operating Manual Sep 13/2004 CSP 100-6 REV 1
11-01-16 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.
Sep 13/2004 Flight Crew Operating Manual Volume 2 REV 1 CSP 100-6
11-01-17 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 com-pass card has 10° major indices, 5° minor indices, cardinal point characters at N, S, E, W, and numeric labels at 30° inter-vals.
At the top center position of the compass card is the fixed lubber line. The lubber line indicates the aircraft heading refer-ence.
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 disap-pears 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.
Volume 2 Flight Crew Operating Manual Sep 13/2004 CSP 100-6 REV 1
11-01-18 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
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