Book excerpt: Welcome to the most advanced version of the HDIW collection! In this seventh edition, we will know all the systems of one of the most sold and flown commercial aircraft in the world commercial aviation, we will know everything about the fabulous Airbus 320. We will learn the opera- tion of the main systems of the airplane. How each of them works and how they are operated by the pilots from the control panels in the cockpit. A practical guide, didactic and entertaining for any professional who is about to start flying A320 or for any professional who wants to ex- pand their frontiers of knowledge! This seventh edition of the most presti- gious collection in Latin America promises to mark a before and after in the way of learning the systems of an airplane, which complex as it may seem, is as simple and entertaining as any other aircraft. Studying an air- plane has never been so easy and entertaining as before, and from the hand of HDIW you will discover that everything is possible to learn if it is explained in the right way! Welcome to the Professional Aviation! Welcome to HDIW!