Radio Navigation for Pilots Alan E. Bramson
There are three parts to the work. Part 1 outlines the concept of radio navigation, offers some useful revsion on basic instrument flying and explains the use of radio charts. Part 2 describes the functions and principle of VDF Radar, ADF, VOR, and ILS and provides an air exercise based on each aid. Part 3 details four flights starting with a simple VMC example and progressing to an airways example.