The IFR enroute chart downloads for Northwest Territories, Yukon, Nunavut, and Atlantic Ocean are each split into two downloads: below the Arctic Circle (66° 33′ 44″ latitude), and above the Arctic Circle. If you do not select Arctic Circle, it will only download the charts below the Arctic Circle for the territories you selected. If you do select Arctic Circle, it will add those downloads for your territories. For example, if you select Yukon, Nunavut, and Arctic Circle, you will be prompted to download files for Yukon, Yukon (Arctic Circle), Nunavut, and Nunavut (Arctic Circle).
Image1. Arctic Circle shown as a download option for Canada.
To save storage space on your device, we recommend you do not select Arctic Circle unless you will need those charts.