Random Route NAT HLA
Please can anyone help me ,i am confused about Random Routes ,What are they?, where are they exist?,Are they same as NAT tracks which published Daily, Can i call them BLUE SPRUCE routes, Are they exist in upper area of NAT flying over ICELAND, or can i say HALF DEGREE routes are RANDOM ROUTES and how can i identify HALF DEGREE TRACKS please share ur experience ur HELP would be really appreciated