Aircraft Noise: Information on a Potential Mandated Transition to Quieter Airplanes, Report to Congressional Committees [open pdf - 1MB]
From the GAO (Government Accountability Office) Highlights: "Although advances in technology have led to quieter aircraft capable of meeting increasingly stringent noise standards, airport noise remains a concern. FAA [Federal Aviation Administration] regulates aircraft noise by ensuring compliance with relevant noise standards. [...] The FAA Reauthorization Act of 2018 included a provision for GAO to review a potential phase-out of stage 3 airplanes--the loudest aircraft currently operating in the United States. This report describes (1) the proportion of stage 3 airplanes in the U.S. fleet, and what proportion of these stage 3 airplanes are able to meet more stringent noise standards and (2) selected stakeholders' views on the potential benefits, costs, and challenges of phasing out stage 3 airplanes."
Government Accountability Office: http://www.gao.gov/