Garmin G1000 NXi Pilot’s Guide for the Cessna NAV III
190-02177-02 Rev. A
384
AUTOMATIC FLIGHT CONTROL SYSTEM
SY
STEM
O
VER
VIEW
FLIGHT
INSTRUMENTS
EIS
AUDIO P
ANEL
& CNS
FLIGHT
MANA
GEMENT
HAZARD
AV
OID
ANCE
AFCS
ADDITIONAL FEA
TURES
APPENDICES
INDEX
As the aircraft nears the VNV Target Altitude, the flight director automatically transitions to VNV Target
Altitude Capture Mode with Altitude Hold Mode armed. This automatic transition is indicated by the green
‘ALTV’ annunciation flashing for up to 10 seconds and the appearance of the white ‘ALT’ annunciation.
The VNV Target Altitude is shown as the Altitude Reference beside the ‘ALTV’ annunciation and remains
displayed above the Vertical Speed Indicator. The Required Vertical Speed Indication (RVSI) is removed
once VNV Target Altitude Capture Mode becomes active.
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 7-18 Automatic Mode Transitions During Altitude Capture
Flash up to 10 sec, Indicating Automatic Transition
Altitude Reference (In This Case,
Equal To VNV Altitude Target)
CHANGING THE VNV TARGET ALTITUDE
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).
APPROACH MODES (GPS, VAPP, LOC)
NOTE:
The selected navigation receiver must have a valid VOR or LOC signal or active GPS course for the
flight director to enter Approach Mode.
Approach Mode is activated when the
APR
Key is pressed. Approach Mode acquires and tracks the
selected navigation source (GPS, VOR, or LOC), depending on loaded approach. This mode uses the selected
navigation receiver deviation and desired course inputs to fly the approach. Pressing the
APR
Key when the
CDI is greater than one dot arms the selected approach mode (annunciated in white to the left of the active
lateral mode). If the CDI is less than 1 dot, the LOC is automatically captured when the
APR
Key is pressed.
VOR Approach Mode (VAPP) provides greater sensitivity for signal tracking than VOR Navigation Mode.
