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Vnav (vertical navigation) – Garmin GPSMAP 296 User Manual

Page 49

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VNAV (Vertical Navigation)

The VNAV sub tab in the Main Menu provides settings for the

vertical navigation feature. These settings create a three-dimensional

profile that guides you from your present location and altitude to a

final (target) altitude at a specified location.
When the VNAV profile is defined, message alerts help keep you

informed of your progress. The teal bar on the HSI on the Panel

Page shows your VNAV profile.
To use the vertical navigation feature, your ground speed must be

greater than 35 knots and you must be navigating a Go To or a route.
The “Approaching VNAV Profile” message appears one minute

prior to the initial descent point. The descent angle locks to prevent

changes in speed from altering the profile. The VNAV feature does

not take into account any changes in groundspeed that occur during

the transition from level flight to descent or climb.
At 500 ft above the target altitude, the “Approaching Target

Altitude” message appears, the time to vertical navigation goes

blank, and the VNAV indicator disappears from the Panel Page.

CAUTION: The GPSMAP 296 is a VFR navigation tool and

should not be used to perform instrument approaches. VNAV is

only a VFR navigation aid and is not intended for instrument

approaches.

VNAV Profile

Glide Ratio to Target

Distance to Target

Distance to Profile

Target Altitude

Airport

Visual Representation of VNAV

Using the VNAV Feature

Use the VNAV (Vertical Navigation) feature to ensure that you are

flying at the proper altitude. The VNAV Indicator appears on the

HSI (Panel Page) as a horizontal teal bar, as shown in the image on

the next page. A message appears when you are approaching the

VNAV Profile. When the bar is in the vertical center of the HSI, you

are at the proper altitude for the VNAV Profile. Make sure VNAV

Indicator is On in the options menu. From the Panel Page, press

MENU to open the options menu. Select Capture VNAV Profile,

and press ENTER to center or re-center the VNAV indicator on

the graphic HSI. You must have entered a valid vertical navigation

profile and be navigating.

GPSMAP 296 Pilot’s Guide

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