PPL 4 maintains the success of the first three volumes and the reputation that the series has established for clarity, presentation and content. The first section deals with basic aerodynamics, possibly one of the least-well understood of all the PPL syllabus subjects.

The physical characteristics of the aeroplane are also covered in detail and, for the first time in a PPL textbook, modern construction materials and designs are explained - a particular safety feature given the increasing number of home built and kitplane designs being flown. The book also explains aircraft loading and performance to JAA requirements as well as aircraft documentation and maintenance procedures and general flight safety. With abundant illustrations (line-drawings, pictures and photographs) and absolutely up-to-date information, this book is has become the new standard reference for this subject.