Dale Craneis an airframe and power plant mechanic, a designated mechanic-examiner, a commercial pilot, and a flight instructor. He has been involved in aviation for more than 50 years and is the recipient of the FAA's Charles Taylor Master Mechanic Award. He lives in Basin, Wyoming.Terry Michmerhuizenis a designated airworthiness representative with 10 years of experience teaching aviation maintenance at the university level. He was a U.S. Army helicopter mechanic and a chief inspector at a FAA-certified repair station. He lives in Gobles, Michigan.