The third edition of this established text continues to provide up-to-date information on the operating principles and applications of the systems and equipment used in aircraft for the generation, distribution and utilisation of electrical power.The fundamental principles of electricity are reviewed, and systems and equipment used in a wise range of aircraft currently in service are dealt with.  The text is supported by numerous diagrams, photographs and useful appendices. Examination-type test question are included at the end of the book. Intended as a course book for students wishing to obtain an Aircraft Maintenance Engineer¿s License (as issued by the UK Civil Aviation Authority and Authorities in other countries around the world), this book will also serve as a reference or ¿refresher¿ for experienced licensed engineers.