Book excerpt: Learning about an aircraft seems to have no end, a thought very close to reality when it comes to complex aircraft. Pilots spend much of their lives, training their flight techniques in a certain aircraft, learning its systems and its operations. The collection of A320 offered by the aeronautical library, is the most complete guide on all the knowledge that a pilot must learn about this wonderful aircraft. This new edition covers all the topics related to the understanding of the QRH (Quick Reference Handbook), its content and its correct way of using it. The QRH of an aircraft, is its quick reference manual, where the pilot can consult about normal and abnormal procedures, use performance tables, know limitations of the aircraft and everything related to the successful operation of the A320. A new contribution to the most complete A320 collection in Spanish on the market.