Garmin G1000 Pilot’s Guide for the Socata TBM 850/900
190-00709-05 Rev. D
518
AUTOMATIC FLIGHT CONTROL SYSTEM
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.
Flash up to 10 sec, Indicating Automatic Transition
Altitude Reference (In
This Case, Equal To
VNV Altitude Target)
Figure 7-16 VNV Altitude Capture
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).
GLIDEPATH 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, LP+V, 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.
