No national park has implemented an air tour management plan in twenty-plus years

Evidence

More than 20 years have elapsed. Not a single national park has implemented an air tour management plan. Little has changed in the air, while on the ground the fight between the air tour operators and environmental groups and the internecine administrative battle between government agencies rages on. — Gordon Hempton, John Grossmann, One Square Inch of Silence- One Man’s…, 695

Categorization

• QUESTION: flagged by the selector, no supporting note recorded
• SEED: Angle for an essay: the Grand Canyon/Grandfathered-flights case as a controlled experiment in how regulatory capture succeeds.
• corroborated: 3 independent passages support this claim — Gordon Hempton, John Grossmann, One Square Inch of Silence- One Man’s…, 695
• XREF: connects to: Most national parks are not actively working on soundscape management plans — Gordon Hempton, John Grossmann, One Square Inch of Silence- One Man’s…, 851

Broader Connections

• Most national parks are not actively working on soundscape management plans #corroborates (0.75) — Gordon Hempton, John Grossmann, One Square Inch of Silence- One Man’s…, 851