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Aviation and the Global Atmosphere

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<strong>Aviation</strong> <strong>and</strong> <strong>the</strong> <strong>Global</strong> <strong>Atmosphere</strong><br />

type of hushkit used. A lightweight hushkit, with smaller improvements in noise reduction, may have a negligible effect on fuel consumption. In addition, for a very<br />

limited number of aircraft, <strong>the</strong>re is a possibility of fitting modern, quiet, fuel efficient engines-but at higher cost because new engines generally are more costly than<br />

hushkits.<br />

In addition, noise restrictions may cause flight paths, arrival paths, <strong>and</strong> departure paths to be longer than <strong>the</strong> shortest routings-resulting in increased fuel burn. Airport<br />

neighbors continue to lobby for noise reductions. Such noise mitigation measures that increase flight time <strong>and</strong> distance may include departures over bodies of water,<br />

selective runway use, routing around populated areas, <strong>and</strong> so forth. Agencies worldwide have implemented <strong>the</strong>se types of noise control strategies. For example, in <strong>the</strong><br />

United States, <strong>the</strong> FAA has defined 37 noise control strategy categories (Cline, 1986). Of <strong>the</strong>se 37 categories, 25 could have a direct effect on aircraft operations at <strong>the</strong><br />

airport. Some of <strong>the</strong> remaining 12 categories could also have an indirect effect on aircraft operations.<br />

Table of contents | Previous page | Next page<br />

O<strong>the</strong>r reports in this collection<br />

http://www.ipcc.ch/ipccreports/sres/aviation/124.htm (7 von 7)08.05.2008 02:44:04<br />

IPCC Homepage

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