Vnav Target Altitude Capture Mode (Altv) - Garmin G3X Touch Pilot's Manual

AUTOMATIC REVERSION TO PITCH HOLD MODE
Several situations can occur while VNAV Mode is active which cause the
AFCS to revert to Pitch Hold Mode:
• Vertical deviation exceeds 200 feet during an overspeed condition.
• Vertical deviation becomes invalid (the Deviation Indicator is removed
from the PFD).
Following a reversion to Pitch Hold Mode, VNAV Mode and the appropriate
altitude capture mode become armed to allow for possible profile recapture.

VNAV TARGET ALTITUDE CAPTURE MODE (ALTV)

VNAV Target Altitude Capture is analogous to Selected Altitude Capture
Mode and is armed automatically after the VNV Key (GMC 305) or VNAV is
selected if the VNAV Target Altitude is to be intercepted before the Selected
Altitude. The annunciation 'ALTV' indicates that the VNAV Target Altitude is to
be captured. Refer to Section 2.3 (Vertical Navigation) for more information
on setting up the VNAV target altitude.
As the aircraft nears the VNAV Target Altitude, AFCS 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.
At 50 feet from the VNAV Target Altitude, the AFCS automatically transitions from
VNAV Target Altitude Capture to Altitude Hold Mode and selects the VNAV target
altitude as the new Autopilot Altitude Reference. 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.
190-01754-00 Rev. E Garmin G3X Touch Pilot's Guide
AFCS
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