Welcome to the most complete manual about the MCDU operations based on the FMS system of the great A320. This manual describes all functions of the MCDU (Multi-Function Control and Display Unit) for Airbus A320 including definitions, normal operations and abnormal operations in real flights. Learn all about each part of the MCDU, each key, each function and every detail you need as a pilot. After learning the all theory concepts, you will learn to operate the MCDU in different flights, including domestic flights, international flight and abnormal flights with emergencies. At the end of this book, you will be ready for operating the MCDU like a professional pilot.