PRIMUS
r
1000 Integrated Avionics System
A28--1146--112--00
Flight Guidance System (FGS)
6-4
D
FD1/FD2 Buttons
-- The FD1/FD2 buttons are used to select and
deselect the display of on--side flight director command bars as
described in table 6--1.
Condition
Effect
Autopilot
FD Command Bars
Effect
AP disengaged
Out of view (no FD
modes selected)
In view (both sides)
Removes only the
on--side command bars
On--side only
Disengages all flight
director modes
AP engaged
Out of view -- Cross--side
N/A
In view -- Coupled side
(coupled side always in
view)
In view -- Cross--side
Can be selected OFF
NOTES:
1. If CAT II is to be enabled, both PFD’s command bars must be on.
2. When the FD1/2 switches are selected, they are annunciated by the
display of the command bars, lights on the GC switches, and in some
cases, by the flight director mode annunciations.
FD1/FD2 Switch Operation
Table 6--1
D
CRS (Course) Knob
-- When the navigation mode is VOR, LOC, or
BC, the CRS knob is used to set the course on the PFD HSI. When
in VOR, pushing the PUSH SYNC button on the CRS knob points
the HSI’s course pointer to the VOR station with the course deviation
centered.
D
HDG Knob
-- The HDG knob is used to set the heading bug on both
HSIs, and on the multifunction display (MFD) when the MAP mode
is displayed. Pushing the PUSH SYNC button on the HDG knob
synchronizes the selected heading to the current aircraft heading.
D
YD OFF
-- This annunciator lights when the flight guidance system
yaw damper is disconnected by the FGS.
D
AP OFF
-- This annunciator lights when the autopilot has been
manually disengaged or it has disengaged itself because of an
internal malfunction, or by the AHRS, or when the DG slew has been
engaged.