Book excerpt: Providing a clear, conversational approach to radio communications, this sourcebook for pilots and aviation specialists features typical transmissions in order to explain how the air traffic control system works and presents simulated flights to demonstrate the correct procedures. Topics cover every aspect of radio communication, including basic system and procedural comprehension, etiquette and rules, visual flight rules, instrument flight rules, emergency procedures, ATC facilities and their functions, and a review of airspace definitions. Beginners and professionals alike will find this an invaluable resource for communicating by radio.