The U.S. Government Accountability Office (GAO) issued its report entitled "Aircraft Noise: Information on a Potential Mandated Transition to Quieter Airplanes" on August 20, 2020. https://bit.ly/31d9NcO The #GAO examined whether recertifying aircraft to meet the more stringent Stage 4 and Stage 5 requirements would have an impact on airport noise. The GAO found that "while the noise certifications for most U.S.-based large commercial jet airplanes are for the minimum noise standards, nearly all of them (96%) are able to meet more stringent noise standards [for Stage 4 and 5]. This is primarily because aircraft technology has outpaced the implementation of noise standards." This led the GAO to conclude that "requiring the airplanes to go through the recertification process for more stringent noise standards could be costly and would provide little noise reduction."
This really does not come as a surprise, as the GAO notes, advances in technology have led to quieter aircraft, but airport noise remains a concern. This only underlines the need for enforceable noise standards on the ground to protect the public health and welfare of people on the ground. #aircraftnoise #aviationnoise #airplanenoise #airplane #aviation #noise #noisecontrol #aviationlaw