Pilots flying tourists over national parks face new rules. None are stricter than at Mount Rushmore

abcnews.go.com:

Fewer airplanes and helicopters will be flying tourists over Mount Rushmore and other national monuments and parks as new regulations take effect that are intended to protect the serenity of some of the nation’s most beloved natural areas

Fewer planes and helicopters will be flying tourists over Mount Rushmore and other national monuments and parks as new regulations take effect that are intended to protect the serenity of some of the most beloved natural areas in the United States.

The air tours have pitted tour operators against visitors frustrated with the noise for decades, but it has come to a head as new management plans are rolled out at nearly two dozen national parks and monuments.

One of the strictest yet was recently announced at Mount Rushmore and Badlands National Park, where tour flights will essentially be banned from getting within a half mile of the South Dakota sites starting in April.

“I don’t know what we’re going to be able to salvage,” complained Mark Schlaefli, a co-owner of Black Hills Aerial Adventures who is looking for alternative routes.

The regulations are the result of a federal appeals court finding three years ago that the National Park Service and the Federal Aviation Administration failed to enforce a 2000 law governing commercial air tours over the parks and some tribal lands. A schedule was crafted for setting rules, and many are wrapping up now.

But now an industry group is eying litigation, and an environmental coalition already has sued over one plan. The issue has grown so contentious that a congressional oversight hearing is planned for Tuesday.

Critics argue that the whirr of chopper blades is drowning out the sound of birds, bubbling lava and babbling brooks. That in turn