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Control Pressed
Modes Selected
Lateral
Vertical
FD Key
Roll Hold (default)
ROL
Pitch Hold (default)
PIT
AP Key
Roll Hold (default)
ROL
Pitch Hold (default)
PIT
CWS Button
Roll Hold (default)
ROL
Pitch Hold (default)
PIT
GA Switch
Takeoff (on ground)
Go Around (in air)
TO
GA
Takeoff (on ground)
Go Around (in air)
TO
GA
ALT Key
Roll Hold (default)
ROL
Altitude Hold
ALT
VS Key
Roll Hold (default)
ROL
Vertical Speed
VS
VNV Key
Roll Hold (default)
ROL
Vertical Path Tracking*
VPTH
NAV Key
Navigation**
GPS
VOR
LOC
Pitch Hold (default)
PIT
BC Key
Backcourse***
BC
Pitch Hold (default)
PIT
APR Key
Approach**
GPS
VOR
LOC
Pitch Hold (default)
PIT
HDG Key
Heading Select
HDG
Pitch Hold (default)
PIT
*Valid VNV flight plan must be entered before VNV Key press activates flight director.
**The selected navigation receiver must have a valid VOR or LOC signal or active GPS course before NAV or APR Key press activates flight director.
***The selected navigation receiver must have a valid LOC signal before BC Key press activates flight director.
Table 7-1 Flight Director Activation
190-00494-02 Rev. B Garmin G1000 Pilot’s Guide for the Cessna Citation Mustang 367
Automatic utomatic utomatic Flight Control System ystem
SYSTEM
OVERVIEW
FLIGHT
INSTRUMENTS EICAS AUDIO PANEL
& CNS
FLIGHT
MANAGEMENT
HAZARD
AVOIDANCE AFCS ADDITIONAL
FEATURES APPENDICES INDEX
AFCS Statustatustatus BoxBox
Flight director mode annunciations are displayed on the PFDs when the flight director is active. Flight director selection and autopilot and yaw damper statuses are shown in the center of the AFCS Status Box. Lateral flight director modes are displayed on the left and vertical on the right. Armed modes are displayed in white and active in green.
SelectedAltitude VerticalSpeed ReferenceSelectedCourse GPS is Selected NavigationSourceSelectedHeading CommandBarsFigure 7-2 PFD AFCS DisplayAFCS Status BoxYaw Damper StatusFlight Director Indicator ArrowLateral ModesActiveAutopilot StatusActiveMode ReferenceArmedVertical ModesArmed
368 Garmin G1000 Pilot’s Guide for the Cessna Citation Mustang 190-00494-02 Rev. B
Automatic utomatic utomatic Flight Control System ystem
SYSTEM
OVERVIEW
FLIGHT
AUDIO PANEL EICAS INSTRUMENTS
& CNS
FLIGHT
MANAGEMENT
HAZARD
ADDITIONAL AFCS AVOIDANCE
INDEX APPENDICES FEATURES
Flight Directorirector Modes
Flight director modes are normally selected independently for the pitch and roll axes. Unless otherwise specified, all mode keys are alternate action (i.e., press on, press off). In the absence of specific mode selection, the flight director reverts to the default pitch and/or roll modes(s). Mode keys on the AFCS controller are accompanied by annunciator lights (Figure 7-1) which are illuminated when their respective modes are armed or active.
Armed modes are annunciated in white and active in green in the AFCS Status Box. Under normal operation, when the control for the active flight director mode is pressed, the flight director reverts to the default mode(s) for the axis(es). Automatic transition from armed to active mode is indicated by the white armed mode annunciation moving to the green active mode field and flashing for 10 seconds.
If the information required to compute a flight director mode becomes invalid or unavailable, the flight director automatically reverts to the default mode for that axis. A flashing yellow mode annunciation and annunciator light indicate loss of sensor (ADC) or navigation data (VOR, LOC, GPS, VNV, WAAS) required to compute commands. When such a loss occurs, the system automatically begins to roll the wings level (enters Roll Hold Mode) or maintain the pitch angle (enters Pitch Hold Mode), depending on the affected axis. The flashing annunciation stops when the affected mode key is pressed or another mode for the axis is selected. If after 10 seconds no action is taken, the flashing annunciation stops.
Figure 7-3 Loss of VOR Signal
The flight director is automatically disabled if the attitude information required to compute the default flight director modes becomes invalid or unavailable.
Switching Flight Directorsirectors
The GFC 700 in the Cessna Citation Mustang has two flight directors, each operating within an IAU. Only one flight director is active (selected) at a time. Flight directors may be switched by pressing the XFR Key. Both PFDs display the selected flight director, indicated by an arrow pointing toward either the pilot or copilot side, in the center of the AFCS Status Box. The annunciator light arrow for the selected flight director is also illuminated beside the XFR Key. When the flight directors are switched, the vertical and lateral modes revert to default.
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Cessna Citation Mustang Pilot’Guide 2(29)
