2 - NAV PAGES30 190-00356-00 Rev GDefault NAV PageThe first NAV page is the default NAV page. Thispage may be quickly selected from ANY page by usingthe CLR key.To select the NAV group and display the default NAVpage, press and hold the CLR key.The default NAV page displays a graphic coursedeviation indicator (CDI) across the top of the page.Unlike the angular limits on a CDI coupled to a VORor ILS receiver, full scale limits for this CDI are definedby a GPS-derived distance (2.0, 1.0 or 0.3 NM). Bydefault, the CDI scale automatically adjusts to thedesired limits based upon the current phase of flight:en route, terminal area or approach.Active Leg ofFlight PlanUser-selectableData FieldsCourse Deviation Indicator (CDI)Page location in NAVgroup or advisoryNOTE: Approaching the FAF, the GNS 400W-seriesunit automatically rescales in an angular fashion.This allows the LPV approach to be flown identicallyto a standard ILS. At 2.0 NM from the FAF, CDI scal-ing is tightened from 1.0 to the angular full scaledeflection defined for the approach.You may also manually select the desired scale set-ting as outlined in the Aux Setup section.The graphic CDI shows your position at the centerof the indicator, relative to the desired course (themoving course deviation needle). As with a traditionalmechanical CDI, when you’re off course simply steertoward the needle. The TO/FROM arrow in the centerof the scale indicates whether you are heading to thewaypoint (an up arrow) or if you have passed thewaypoint (a down arrow).The following symbols are used—on the defaultNAV page directly below the CDI—to depict the“active leg” of a flight plan or direct-to:Direct-To a WaypointCourse to a Waypoint, or DesiredCourse between Two WaypointsRight Procedure TurnLeft Procedure TurnVectors-To-FinalDME Arc to the leftDME Arc to the rightLeft-hand Holding PatternRight-hand Holding PatternDirectly below the CDI appears the active leg ofyour flight plan, or the direct-to destination whenusing the direct-to key. This will automaticallysequence to the next leg of your flight plan as youreach each interim waypoint. If no flight plan ordirect-to destination has been selected, the destinationfield will remain blank.Default Nav Page
