(1923–2010), the original author of this series, was involved in aviation for more than 50 years. He began his career in the US Navy as a mechanic and flight engineer in PBYs. After World War II, he attended Parks Air College. After college, he worked as an instrument overhaul mechanic, instrument shop manager, and flight test instrumentation engineer. Later he became an instructor and then director of an aviation maintenance school. Dale was active as a writer of aviation technical materials, and as a consultant in developing aviation training programs. ATEC presented him their special recognition award for "his contribution to the development of aviation technicians as a prolific author of specialized maintenance publications." He also received the FAA's Charles Taylor "Master Mechanic" award for his years of service in and contributions to the aviation maintenance industry, and the recognition of his peers for excellence as a leader and educator in aircraft maintenance, and aviation safety advocate. , technical editor for the textbook series, has over 40 years of experience in aviation as an A&P mechanic, authorized inspector (IA), commercial pilot, flight instructor, and aeronautical engineer. He has worked in Part 91, 121, and 135 operations, has held multiple DOM (director of maintenance) positions, and has taught at the university level. His pilot/mechanic experience includes 10 years of living and working in Central and South America and Africa. Keith has worked as a design engineer in aircraft design and certification and has held multiple leadership roles including engineering director and vice president positions that have included STC certifications and the type certification (TC) of a single-engine turboprop airplane.
