Garmin G1000 Pilot's Manual page 334

AUTOMATIC FLIGHT CONTROL SYSTEM
VNAV T
ARGET
Armed VNV Target Altitude and Selected Altitude capture modes are mutually exclusive. However,
NOTE:
Selected Altitude Capture Mode is armed implicitly (not annunciated) whenever VNV Target Altitude Capture
Mode is armed.
VNAV Target Altitude Capture is analogous to Selected Altitude Capture Mode and is armed automatically
after the VNV Key is pressed and the next VNAV Target Altitude is to be intercepted before the Selected
Altitude. The annunciation 'ALTV' indicates that the VNAV Target Altitude is to be captured. VNAV Target
Altitudes are shown in the active flight plan or vertical direct-to, and can be entered manually or loaded
from a database (see the GPS Navigation Section for details). At the same time as "TOD within 1 minute"
is annunciated in the Navigation Status Box, the active VNAV Target Altitude is displayed above the Vertical
Speed Indicator (see Figure 7-11).
As the aircraft nears the VNAV Target Altitude, the flight director automatically transitions to VNAV 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 VNAV Target Altitude is shown as the Altitude Reference beside the 'ALTV' annunciation.
At 50 feet from the VNAV Target Altitude, the flight director automatically transitions from VNAV 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 pitch 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.
Changing the VNAV Target Altitude
Pressing the CWS Button while in VNAV Target Altitude Capture Mode does not cancel the mode.
NOTE:
Changing the current VNAV Target Altitude while VNAV 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 VNAV Target Altitude or the Selected Altitude,
depending on which altitude is to be intercepted first.
VNAV target altitudes can be changed while editing the active flight plan (see the GPS Navigation
Section for details).
7-16
A C M
LTITUDE APTURE ODE
Flash up to 10 sec, Indicating Automatic Transition
Figure 7-14 VNAV Altitude Capture
Garmin G1000 Pilot's Guide for Cessna Nav III
(ALTV)
Altitude Reference (In
This Case, Equal To
VNAV Altitude Target)
190-00498-01 Rev. A