Implications of Requiring New Production of Older Aircraft Types (less than 75,000 pounds) to Meet Amended Noise Standards

摘要

The study examined the implications of requiring new production of older business jets to meet Stage 3 noise standards. Most current production business jets are well below these standards. Aircraft that may be in production after 1985 which do not meet Stage 3 noise limits include the G.E. powered Learjets and the Gulfstream 3. Both companies have conducted extensive noise reduction programs and, except for reengineering, application of known technology will not lead to significant noise reductions. Reengineering appears to be impractical since use of an available alternative engine would have a major impact on aircraft performance and mission characteristics. Significant reductions in noise footprint can be achieved by means of noise abatement flight procedures. use of new production models of these aircraft in the post-1985 time period is not expected to have major community noise impacts particularly at airports with 50 or more air carrier departures per day. Such airports account for about 94 percent of the U.S. population impacted by 30 NEF or more. (Author)