The Nation - News from July 29, 1987
Restrictions on sightseeing flights over Arizona’s Grand Canyon and several other national parks because of noise and the risk of collisions passed the Senate unanimously, and differences with a bill passed by the House in May will be resolved in a conference committee. Twenty-five people died in a June 18, 1986, collision of a sightseeing plane and a helicopter over the Grand Canyon. Flights below the canyon rim would be banned, and aircraft would have to fly at least 2,000 feet over Yosemite National Park in California.
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