Using The Vnav Feature - Garmin G300 Pilot's Manual

One minute prior to the initial descent point the "Approaching VNAV Profile"
message appears and the 'Estimated Time to VNAV' (on Active Flight Plan Page)
goes blank. The descent angle locks to prevent changes in speed from altering
the profile. The VNAV feature does not take into account any changes in ground
speed that occur during the transition from level flight to descent or climb.
At 200 ft above the target altitude, the "Approaching Target Altitude" message
appears, and the VNAV indicator disappears from the PFD.

uSing the vnav Feature

Use the VNAV (Vertical Navigation) feature to ensure the aircraft is at the proper
altitude. The magenta VNAV Indicator appears on the PFD. A message appears
when approaching the VNAV Profile. When the VNAV Indicator is in the vertical
center of the Vertical Deviation Scale, the aircraft is at the proper altitude for the
VNAV Profile.
190-00921-00 Rev. D
Distance to Profile
Distance to Target
Visual Representation of VNAV
Garmin G300 Pilot's Guide
Flight instruments
Target Altitude
Airport
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