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At 50 feet from the VNV Target Altitude, the flight director automatically transitions from VNV Target Altitude Capture to Altitude Hold Mode and tracks the level leg. As Altitude Hold Mode becomes active, the white ‘ALT’ annunciation moves to the active vertical mode field and flashes green for 10 seconds to indicate the automatic transition. The flight director automatically arms Vertical Path Tracking, allowing upcoming descent legs to be captured and subsequently tracked.
Figure 7-17 Automatic Mode Transitions During Altitude CaptureFlash up to 10 sec, Indicating Automatic TransitionAltitude Reference (In This Case, Equal To VNV Altitude Target)
C
hanging the VNV Target Altitudude NOTE: Pressing the CWS Button while in VNV Target Altitude Capture Mode does not cancel the mode.
Changing the current VNV Target Altitude while VNV Target Altitude Capture Mode is active causes the flight director to revert to Pitch Hold Mode. Vertical Path Tracking and the appropriate altitude capture mode are armed in preparation to capture the new VNV Target Altitude or the Selected Altitude, depending on which altitude is to be intercepted first.
VNV target altitudes can be changed while editing the active flight plan (see the Flight Management Section for details).
190-00494-02 Rev. B Garmin G1000 Pilot’s Guide for the Cessna Citation Mustang 383
Automatic utomatic utomatic Flight Control System ystem
SYSTEM
OVERVIEW
FLIGHT
INSTRUMENTS EICAS AUDIO PANEL
& CNS
FLIGHT
MANAGEMENT
HAZARD
AVOIDANCE AFCS ADDITIONAL
FEATURES APPENDICES INDEX
Glidepathlidepathlidepath Mode (GP) NOTE: Pressing the CWS Button while Glidepath Mode is active does not cancel the mode. The autopilot guides the aircraft back to the glidepath upon release of the CWS Button.
Glidepath Mode is used to track the WAAS-based glidepath. When Glidepath Mode is armed, ‘GP’ is annunciated in white in the AFCS Status Box.
Selecting Glidepath Mode:
1) Ensure a GPS approach with vertical guidance (LPV, LNAV/VNAV, LNAV+V) is loaded into the active flight plan. The active waypoint must be part of the flight plan (cannot be a direct-to a waypoint not in the flight plan).
2) Ensure that GPS is the selected navigation source (use the CDI Softkey to cycle through navigation sources if necessary).
3) Press the APR Key. NOTE: Some RNAV (GPS) approaches provide a vertical descent angle as an aid in flying a stabilized approach. These approaches are NOT considered Approaches with Vertical Guidance (APV). Approaches that are annunciated on the HSI as LNAV or LNAV+V are considered Nonprecision Approaches (NPA) and are flown to an MDA even though vertical glidepath (GP) information may be provided. WARNING: When flying an LNAV approach (with vertical descent angle) with the autopilot coupled, the aircraft will not level off at the MDA even if the MDA is set in the altitude preselect.
Upon reaching the glidepath, the flight director transitions to Glidepath Mode and begins to capture and track the glidepath.
Figure 7-18 Glidepath Mode Armed
Once the following conditions have been met, the glidepath can be captured:
• The active waypoint is at or after the final approach fix (FAF).
• Vertical deviation is valid.
• The CDI is at less than full-scale deviation
• Automatic sequencing of waypoints has not been suspended (no ‘SUSP’ annunciation on the HSI)
384 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
Figure 7-19 Glidepath ModeGlidepath Mode ActiveGPS Approach Mode ActiveCommand Bars to Indicate Descent on GlidepathGlidepath IndicatorGPS is Selected NavigationSourceLPV Approach Active
190-00494-02 Rev. B Garmin G1000 Pilot’s Guide for the Cessna Citation Mustang 385
Automatic utomatic utomatic Flight Control System ystem
SYSTEM
OVERVIEW
FLIGHT
INSTRUMENTS EICAS AUDIO PANEL
& CNS
FLIGHT
MANAGEMENT
HAZARD
AVOIDANCE AFCS ADDITIONAL
FEATURES APPENDICES INDEX
Glideslope Mode (GS) NOTE: Pressing the CWS Button while Glideslope Mode is active does not cancel the mode. The autopilot guides the aircraft back to the glideslope upon release of the CWS Button.
Glideslope Mode is available for LOC/ILS approaches to capture and track the glideslope. When Glideslope Mode is armed (annunciated as ‘GS’ in white), LOC Approach Mode is armed as the lateral flight director mode.
Selecting Glideslope Mode:
1) Ensure a valid localizer frequency is tuned.
2) Ensure that LOC is the selected navigation source (use the CDI Softkey to cycle through navigation sources if necessary).
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Cessna Citation Mustang G1000 Integrated Flight Dec(136)
