; and (3) describes any anticipated safety enhancements, fuel and operating cost savings, and reduction in carbon emissions of aircraft operating through airspace in which such advanced surveillance systems or services are used. 403. GPS monitoring pilot program (a) Establishment The Administrator shall conduct a pilot program to evaluate technologies to detect, measure, and locate disrupting sources of interference to the GPS Standard Positioning Service in order to mitigate the impacts on air commerce and other related government and civilian functions within the air traffic management ecosystem. (b) Evaluation of technologies (1) Types of technologies The pilot program shall evaluate commercially available technologies, as well as technologies under development by the FAA, the Department of Transportation, the Department of Defense, the Department of Homeland Security, and the National Aeronautics and Space Administration. (2) Scope The pilot program shall consider technologies that have both physical electronics equipment and software components, as well as technologies with only software components. (c) Number of evaluation sites The pilot program shall evaluate technologies for the purposes described in subsection (a) at not less than 5, and not more than 7, airports unless the Administrator determines that additional evaluation sites are needed to carry out the pilot program. (d) Location of evaluation sites (1) In general The pilot program shall be conducted at each of the following types of airports: (A) A primary airport in Class B airspace. (B) A primary airport in Class C airspace. (C) A primary airport in Class D airspace. (D) An airport in Class E airspace. (E) A Joint-Use Airport. (2) Documented interference In determining whether an airport should be an evaluation site for the pilot program, the Administrator shall consider airports described in paragraph (1) that have experienced documented instances of interference to the GPS Standard Positioning Service during the 5-year period ending with the