In 2005 the Federal Aviation Administration (FAA) worked with industry representatives to complete the Operator's Manual for Human Factors in Aviation Maintenance (Op's Manual). That manual earned broad U.S. and international acceptance. A Spanish and Chinese translation influenced its international distribution and value. The Op's Manual won the FAA Administrator's Award for Use of Plain Language. Document design, simplicity, and concise delivery of technical information were the key features that made the Op's Manual useful for maintenance and engineering personnel. In 2008, the FAA and industry published an encore manual dedicated to airport operations. This new 2nd Edition of The Operator's Manual for Human Factors in Aviation Maintenance follows the same successful format as the 1st Edition. Selected chapters of the 1st Edition are substituted with chapters more relevant to today's aviation maintenance challenges. Repeated chapters are significantly enhanced. As with the 1st Edition, contributors remained disciplined to keep the information concise and limited to only relevant information.