Noise Limitations for Aircraft Operations in the Vicinity of Grand Canyon National Park

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This document notifies the public that a copy of a working draft of a Supplemental Notice of Proposed Rulemaking (SNPRM) Noise Limitations for Aircraft operations in the Vicinity of Grand Canyon National Park was released to an industry representative contrary to Department of Transportation (DOT) policy. This notice provides information to allow other persons the same access to this information to ensure fairies in the rulemaking process.