Dale Crane (1923-2010) was involved in aviation for more than 50 years. His credentials include Airframe and Powerplant Mechanic, Designated Mechanic Examiner, Commercial Pilot, Flight Instructor (airplanes), and Advanced and Instrument Ground Instructor. He worked as an instrument overhaul mechanic, instrument shop manager, flight test instrumentation engineer, and eventually an instructor and 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.

Keith Anderson is an Associate Professor in the Applied Aviation Science Department in the College of Aviation at LeTourneau University. His credentials include A&P certificate, Inspection Authorization (IA) rating, commercial pilot with Instrument Rating, and certified flight instructor. He has been employed as a mechanic and director of maintenance at several maintenance facilities, including shops operating under Part 135 and Part 121. Keith has also worked as a design engineer developing a new single-engine turboprop utility airplane, as vice president of engineering for a company that developed supplemental type certificates (STCs) for corporate aircraft, and served as the director of engineering for an aircraft simulation company.