Dave McKenzie worked as an automobile chassis designer for Ford Motor Company for nearly forty years. After earning his commercial pilot’s license in January 1963, he enjoyed a par...view moreDave McKenzie worked as an automobile chassis designer for Ford Motor Company for nearly forty years. After earning his commercial pilot’s license in January 1963, he enjoyed a part-time career as a flight instructor and aerobatic pilot. Dave has published articles in several aviation magazines and currently lives in Michigan.view less