Garmin GNC 420(A) Pilot's Manual & Reference

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Garmin GNC 420(A) Pilot's Manual & Reference Manual pdf 54 page image

GNC 420(A) Pilot’s Guide and ReferenceSECTION 3NAV PAGES3-20 190-00140-20 Rev. K3.7 POSITION PAGEThe Position Page displays the present position (bydefault, in latitude and longitude) and altitude. ThePosition Page (Figure 3-39) also displays the currenttrack, ground speed, time, and a reference waypoint field.These fields are user-selectable to configure the page tothe pilot’s own preferences and current navigation needs.Figure 3-39 Position PagePresent PositionReferenceWaypoint FieldGraphic TrackIndicator User-selectableData FieldsNumber of Pages inCurrent Page GroupPosition ofCurrent Pagewithin CurrentPage GroupCurrentPage GroupThe graphic ‘track’ indicator at the top of the pageindicates the direction the aircraft is heading, or track, onlywhile moving. The graphic ‘track’ indicator and the TRKindication directly below it provide the same information.Use the graphic ‘track’ indicator for quick at-a-glanceground track information. Directly below are three user-selectable fields, which by default, display track, groundspeed, and altitude. Barometric pressure (BARO) settingsand minimum safe altitude (MSA) can also be displayed inthese fields. MSA is the recommended minimum altitudewithin approximately ten miles of the present position.MSA is calculated from the information contained in thedatabase and generally take into account mountains,buildings, and other permanent features.NOTe: Do not rely solely on MSa as an absolutemeasure of safe altitude. Consult current areacharts and NOTaMs.Changing the user-selectable data fields:1) Press the MENU Key to display the PositionPage Menu (Figure 3-40).Figure 3-40 Position Page Menu2) Turn the large right knob to highlight ‘ChangeFields?’ and press the ENT Key.3) Turn the large right knob to highlight the datafield to be changed.4) Turn the small right knob to display the list ofavailable data items (Figure 3-41). Continueturning the small right knob to select thedesired data item from the list.Figure 3-41 Select Field Type Window