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Table 7-4 Flight Director Lateral Modes
The CWS Button does not change lateral references for Heading Select, Navigation, Backcourse, or Approach Mode. The autopilot guides the aircraft back to the Selected Heading/Course upon release of the CWS Button.
388 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
Roll Hold Mode (ROL) Noteote: If Roll Hold Mode is activated as a result of a mode reversion, the flight director rolls the wings level.
When the flight director is activated or switched, Roll Hold Mode is selected by default. This mode is annunciated as ‘ROL’ in the AFCS Status Box. The current aircraft bank angle is held, subject to the bank angle condition.
Bank AngleFlight Director Response< 6°Rolls wings level6 to 30°Maintains current aircraft roll attitude> 30°Limits bank to 30°Table 7-5 Roll Hold Mode ResponsesFigure 7-24 Roll Hold Mode Annunciation
Changing the Roll Reference
The roll reference can be changed by pressing the CWS Button, establishing the desired bank angle, then releasing the CWS Button.
Low BanBank Mode
When in Low Bank Mode, the flight director limits the maximum commanded roll angle to 18°. Low bank arc limits are displayed in green along the Roll Scale.
Low Bank Mode can be manually selected/deselected by pressing the BANK Key while in Heading Select or Navigation Modes (GPS and VOR). Low Bank Mode is activated automatically above 29,850 feet. The flight director deactivates Low Bank Mode when descending through 29,650 feet. The annunciator light next to the BANK Key illuminates while Low Bank Mode is selected.
Figure 7-25 Low Bank Mode Limits
190-00494-02 Rev. B Garmin G1000 Pilot’s Guide for the Cessna Citation Mustang 389
Automatic utomatic utomatic Flight Control System ystem
SYSTEM
OVERVIEW
FLIGHT
INSTRUMENTS EICAS AUDIO PANEL
& CNS
FLIGHT
MANAGEMENT
HAZARD
AVOIDANCE AFCS ADDITIONAL
FEATURES APPENDICES INDEX
Heading Select Mode (HDG)
Heading Select Mode is activated by pressing the HDG Key. Heading Select Mode acquires and maintains the Selected Heading. The Selected Heading is shown by a light blue bug on the HSI and in the box to the upper left of the HSI.
C
hanging the Selected Heading Noteote: Pressing the HDG Knob synchronizes the Selected Heading to the current heading.
The Selected Heading is adjusted using the HDG Knob on either PFD. Pressing the CWS Button and hand-flying the aircraft does not change the Selected Heading. The autopilot guides the aircraft back to the Selected Heading upon release of the CWS Button.
Turns are commanded in the same direction as Selected Heading Bug movement, even if the bug is turned more than 180° from the present heading (e.g., a 270° turn to the right). However, Selected Heading changes of more than 330° at a time result in turn reversals.
Figure 7-26 Heading Select ModePitch Hold Mode ActiveHeading Select Mode ActiveCommand Bars Track Selected HeadingSelected Heading Selected Heading Bug
390 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
Navigationavigationavigation Modes (GPS, VOR, LOC) NOTE: The selected navigation receiver must have a valid VOR or LOC signal or active GPS course for the flight director to enter Navigation Mode.
Pressing the NAV Key selects Navigation Mode. Navigation Mode acquires and tracks the selected navigation source (GPS, VOR, LOC). The flight director follows GPS roll steering commands when GPS is the selected navigation source. When the navigation source is VOR or LOC, the flight director creates roll steering commands from the Selected Course and deviation. Navigation Mode can also be used to fly non-precision GPS and LOC approaches where vertical guidance is not required.
If the Course Deviation Indicator (CDI) shows greater than one dot when the NAV Key is pressed, the selected mode is armed. If the CDI shows less than one dot, Navigation Mode is automatically captured when the NAV Key is pressed. The armed annunciation appears in white to the left of the active lateral mode.
Figure 7-27 GPS Navigation Mode Armed
When the CDI has automatically switched from GPS to LOC during a LOC/ILS approach, GPS Navigation Mode remains active, providing GPS steering guidance until the localizer signal is captured. LOC Navigation Mode is armed automatically when the navigation source switch takes place if the APR Key is not pressed prior to the automatic source switch.
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Cessna Citation Mustang G1000 Integrated Flight Dec(138)
