This book, which can be used only in the Air Force ROTC program, elucidates ideas about air navigation techniques. The book is divided into two main parts. The first part describes the earth's surface and different components of navigation. A chapter on charts provides ideas about different kinds of charts and a variety of symbols used in preparing them. The second part of the book describes various techniques used in navigation. The areas described in this section include preflight preparation, dead reckoning, navigation instruments, radio and electronic navigation, radio language and communication procedures. A description of the variety of information available to pilots is informative. (PS)