Noise: Muffling the Jet

After years of enduring the ear-splitting shriek of jetliners flying over their homes, residents of communities near airports can at last look forward to quieter skies. By 1971, FAA Associate Administrator Oscar Bakke announced last week, the aviation agency will most likely demand that the engines on some 2,100 existing commercial jets be muffled to reduce their noise to a still unspecified level.

The FAA also announced that noise limits have been established for the forthcoming breed of "jumbo jets" —Boeing's 747, Lockheed's L-1011 and McDonnell Douglas' DC-10. The legal maximum for jumbo noise will be considerably lower than the...

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