19Detailed OperationCustom MapFull Nav data information shownPartial Nav data information shownMinimum Nav data information shownLoad Chart (Optional)When Load Chart is selected with no destinationairport entered in a flight plan, the nearest 15 airportsare displayed. If a destination airport is entered andcharts exist, that airport and the 14 airports nearest tothe aircraft’s present position are displayed.After selecting an airport, the individual approachchart to be overlaid can be loaded from a list of geo-referenced approach charts available for that airport.Not all approach charts can be overlaid in this fashionand only geo-referenced charts will be presented forselection from the Custom Map. Because of this, it ispossible that approach charts that are viewable underthe ChartView Function may not be presented in thislist.NOTE: The pilot must be aware that not allcharts in the loaded database can be used asan overlay. The Load Chart function is automaticwhen connected to a GNS 480-series GPS re-ceiver and the AutoLoad Chart option is enabledin the SYS function.Overlaid chart labels are always oriented North-Up. To prevent confusion, Intersection labels from theunderlying map may be deselected.Press the Next Page MENU ITEM key to displaythe next page of menu items.Custom Map Menu Option Page 2The second option page of the Custom Map func-tion lets you select options for the choices of Airports,VORs, NDBs, Intersections, and Airspace. The lastoption selection takes you to the next page of options.Custom Map page with Menu Items (page 2)AirportsThe Airports option allows you to choose the levelof airport information displayed on the Map screen.You may select the display of airport icon and identi-fier, icon only, or no information by each subsequentpress of the Airport MENU ITEM option key.
