As a pilot of 38 years experience, I have watched variousnavigation systems of varying degrees of reliability come and go. The trend in generalaviation during recent years has been for everyone to jump on the GPS bandwagon. Hundredsof millions have been spent to install GPS receivers in aircraft of all types, worldwide.It's a great system. It is not, however, the only system.
This is a companion discussion topic for the original entry at https://www.avweb.com/features/on-the-basics