More changes for ‘natural quiet’ rule | Aviation International News

Regulations and Government

More changes for ‘natural quiet’ rule

The subject of aircraft noise in the Grand Canyon area has been of special interest to helicopter operators for years now, but it might be taking on an eve

By AIN Staff • AIN Staff

May 2, 2008

The subject of aircraft noise in the Grand Canyon area has been of special interest to helicopter operators for years now, but it might be taking on an even broader dimension. The definition of “substantial restoration of natural quiet” might lead to new rules for aircraft flying over the Grand Canyon National Park at and above 18,000 feet, according to a public notice from the National Park Service (NPS).

In the public notice in the Federal Register, the NPS said that given the volume of high-altitude commercial jet and general aviation traffic overflying the Grand Canyon above 17,999 feet msl and a recent court decision, the “substantial restoration of natural quiet” at Grand Canyon National Park as currently defined cannot be attained.

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