This is the new 4th Edition of John Cutlers bestselling title on aircraft structures. This book explains aircraft structures so as to provide a basic understanding of the subject and the terminology used, as well as illustrating some of the problems. It provides a brief historical background, and covers parts of the aeroplane, loads, structural form, materials, processes, detail design, quality control, stressing, and the documentation associated with modification and repairs. The fourth edition takes account of new materials and the new European regulatory system.