The purpose of this project is to develop a business plan for the development of general aviation facilities and provision of related services at the Athens International Airport. The study was commissioned as part of an effort to assess the operational efficiency of the currently existing general aviation facilities provided by AIA. In addition, the potential of developing a dedicated Fixed Base Operation unit within AIA is examined. The business plan is for a contract period of 23 years, from year 2003 until year 2026. The FBO developer is considered as a concessionaire. The business plan is structured through the following main sections: Analysis of the existing conditions concerning general aviation at the Athens International Airport, forecast of general aviation traffic, capacity requirements, financial analysis for the project evaluation, sensitivity analysis and SWOT analysis.