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panel. When bug is off scale, a
dashed line is displayed from center
of compass to selected heading.
Lubber Line (white)
Fixed reference for reading
current airplane heading.
Fixed index marks are located
around compass rose at
45 degree increments.
Airplane Symbol (white)
Indicates center of compass
rose.
Primary Flight Display
Pilot’s and Copilot’s Instrument Panels
Horizontal Situation
Indicator
<0015>
Compass Rose (white)
Rotating card indicates airplane
current magnetic heading under
fixed lubber line.
Small marks at 5 degree increments.
Larger marks at 10 degree increments.
Digits and cardinal points at 30 degree
increments.
Vol. 1 12--50--7
REV 56, Jan 31/03
FLIGHT INSTRUMENTS
Attitude and Heading Reference System
Flight Crew Operating Manual
CSP A--013
MASTER
A. Display Reversion
Display capability is maintained when sensor data failure occurs. Either PFD (or MFD
when in PFD format) can be configured to display data from either attitude and heading
reference system by operation of a reversionary switch on the source selector panel.
Selection of alternate data sources is indicated to the flight crew by yellow single source
flag on the PFD and MFD.
Display capability is maintained when sensor data failure occurs. Either PFD (or MFD
when in PFD format) can be configured to display data from either inertial reference
system by operation of a reversionary switch on the source selector panel. Selection of
alternate data sources is indicated to the flight crew by yellow single source flag on the
PFD and MFD. <0025>
REV 56, Jan 31/03
Vol. 1 12--50--8
FLIGHT INSTRUMENTS
Attitude and Heading Reference System
Flight Crew Operating Manual MASTER
CSP A--013
Source Selector Panel <MST>
Figure 12---50---5
NORM -- Each attitude and heading
computer supplies data to the same
side display.
1 -- Attitude and heading computer 1
supplies data to both pilot and copilot
displays. An amber source message is
displayed on both PFDs.
2 -- Attitude and heading computer 2
supplies data to both pilot and copilot
displays. An amber source message
is displayed on both PFDs.
Source Selector Panel
Center Pedestal
NORM -- Each inertial reference unit
supplies data to the same side display.
1 -- Inertial reference unit 1 supplies
data to both pilot and copilot displays.
An amber source message is displayed
on both PFDs.
2 -- Inertial reference unit 2 supplies
data to both pilot and copilot displays.
An amber source message is displayed
on both PFDs.
Source Selector Panel
Center Pedestal
Used to revert inertial reference systems.
ATTD HDG
ATTD HDG
<0025>
Used to revert attitude and heading
reference systems.
Vol. 1 12--50--9
REV 56, Jan 31/03
FLIGHT INSTRUMENTS
Attitude and Heading Reference System
Flight Crew Operating Manual
CSP A--013
MASTER
Attitude and Heading Source Selection <MST>
Figure 12---50---6
Primary Flight Display
Pilot’s and Copilot’s Instrument Panels
Multifunction Display -- HSI Mode
Pilot’s and Copilot’s Instrument Panels
MAG 1, MAG 2, DG 1 or DG 2 (amber)
Indicates heading selection when a single
attitude and heading source has been
selected.
ATT 1 or 2 (amber)
Indicates that single inertial reference source
has been selected.
ATT 1 -- Inertial reference unit 1 selected.
ATT 2 -- Inertial reference unit 2 selected
<0025>
<0015>
MAG 1, MAG 2, TRU 1 or TRU 2 (amber)
Indicates heading selection when a single
Inertial reference source has been selected.
<0025>
REV 56, Jan 31/03
Vol. 1 12--50--10
FLIGHT INSTRUMENTS
Attitude and Heading Reference System
Flight Crew Operating Manual MASTER
CSP A--013
Attitude/Heading Source Failure Indications <MST>
Figure 12---50---7
MAG 1 or DG Flag (red)
Indicates that onside or both attitude
and heading systems are faulty or out
of tolerance.
ATT Flag (red)
Indicates that onside or both attitude
and heading systems have failed.
Primary Flight Display
Pilot’s and Copilot’s Instrument Panels
Multifunction Display -- HSI Mode
Pilot’s and Copilot’s Instrument Panels
MAG or TRU Flag (red)
Indicates that onside or both inertial
reference systems are faulty or out
of tolerance.
ATT Flag (red)
　
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