Garmin aera 795/796 Pilot’s Guide190-01194-00 Rev. C 39GPS NavigationOverview GPS Navigation Flight Planning Hazard Avoidance Additional Features Appendices Index4) Touch the '+' or '-' Buttons to increase/decrease the valueOr:Touch the Radial Button to enter the desired radial using the keypad andtouch the OK Icon.Map Option MenuRadial ButtonSet OBSReturning to automatic sequencing of route waypoints:1) From the Main Menu, touch the Map or the Active FPL Icon.2) Touch the Menu icon.3) Touch the Release Hold menu option (only available when navigating aDirect To or Flight Plan).2.3 VERTICAL NAVIGATION (VNAV)The VNAV function provides settings for the vertical navigation. These settings createa three-dimensional profile from the present location and altitude to a final (target)altitude at a specified location.When the VNAV profile is defined, the pilot is informed of the progress by messagealerts. The teal bar on the HSI (when displayed) shows the VNAV profile.The Vertical Navigation feature is only available when navigating a Direct To or flightplan, and the ground speed is greater than 35 knots.The “Approaching VNAV Profile” message appears one minute prior to the initialdescent point. The descent angle locks to prevent changes in speed from altering theprofile. The VNAV feature does not take into account any changes in groundspeed thatoccur during the transition from level flight to descent or climb.