摘要: Air traffic controllers provide a vital service in ensuring the safe andefficient flow air traffic through the nation's airspace. Since 1961, the Federal Aviation Administration (FAA), the agency with responsibility for the Nation... 展开 Air traffic controllers provide a vital service in ensuring the safe andefficient flow air traffic through the nation's airspace. Since 1961, the Federal Aviation Administration (FAA), the agency with responsibility for the National Airspace System and its facilities, has used formal staffing standards to determine staffing requirements for air traffic control facilities. In recent years, variances between estimates provided by the staffing standards and actual staffing levels at specific facilities have raised questions about the accuracy of FAA's forecasts for individual facilities. A brief overview of the air traffic control system, the major facilities in which controllers work, and the nature of controllers' work is provided. An outline of the remaining chapters of the report is given in the final section. 收起