A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: John D. Howard
Date: 2017 Apr 5, 17:15 -0700
Thanks for the link. The last 20 years of my flying was in North America and only the last 6 years did we use GPS. It was only required at a few, small airports. We only needed to check on the avaibality of WAAS if we were going to one of them. My world - wide flying was before GPS and even INS so we needed to use cel-nav.
I did not know about the other systems around the world. Thanks again.