The AAF logo they found on the wings likely stood for “Amelekite Air Force”. According to standard theories, it would take about 3500 years for that much ice and snow to get put down over the plane, i.e. the thing has to date from the time of Moses, and the only nation organized enough to build such a thing at that time would have been the Amalekites...
Yeah, their dating for the age of the earth is just as accurate.