CANYON DE CHELLY NATIONAL MONUMENT, Ariz. (AP) - Commercial air tours will soon be prohibited over Canyon de Chelly National Monument in northeastern Arizona under a plan approved this week by the Federal Aviation Administration and the National Park Service.
The park service said in a statement that the plan was was signed Thursday and will take effect in 180 days, barring any legal challenges. It will ban the tours over the park and within a half mile (800 meters) outside its boundary.
"Prohibiting commercial air tours protects these lands´ cultural and spiritual significance to the Navajo Nation," said park Superintendent Lyn Carranza. "Canyon de Chelly National Monument´s Air Tour Management Plan honors the unique nation-to-nation relationship regarding decisions affecting the park and helps to preserve one of the most important archeological landscapes in the southwest."
The park lies within the Four Corners region inside the Navajo Nation and is among the most visited national monuments in the United States. It's known for its soaring sandstone cliffs and 800-foot (244-meter) high Spider Rock spire. Prehistoric rock art is found throughout the area, which has been home to Native Americans for millennia.
The sightseeing flights reportedly date back to the 1930s, when crews building the Hoover Dam on the Arizona-Nevada border asked helicopter pilots working on the project to give flyovers to their families.
The tours offering a unique overhead view of spectacular landscapes have long been popular at Grand Canyon National Park in Arizona. Some of the nation´s busiest spots for tour operators have included Hawaii Volcanoes National Park, which is home to one of the world´s most active volcanoes, and Haleakala National Park.
Supporters of the tours say they offer an exciting experience to tourists and allow older people and those with disabilities to see and enjoy the parks. Critics say the flights are an unnecessarily dangerous way to view some of the most stunning public lands in the United States.
Rules designating routes and minimum altitudes were set in 1986 after two tour aircraft collided over the Grand Canyon, killing 25 people. Still, there are currently numerous options for helicopter tours to the Grand Canyon, departing from places including Las Vegas and Sedona, Arizona.
Critics also complain that the buzz of helicopters drowns out the sounds of nature, disrupting the experiences of visitors on the ground and tribal members who call the land around the parks home.
The park service works with the FAA to implement the National Park Air Tour Management Act of 2000, which requires tour operators who want to conduct such commercial air tours to get FAA approval. The law also requires the FAA, in conjunction with the park service, to establish management plans for air tours for those parks and nearby tribal lands where applications are made.
Canyon de Chelly is the last of roughly two dozen national park units where the group Public Employees for Environmental Responsibility had fought for flyover restrictions. Other national parks where such commercial flyovers essentially are or will be banned in coming years include Badlands National Park and Mount Rushmore National Memorial in South Dakota, Glacier National Park in Montana, and Bandelier National Monument in New Mexico. Only two air tours per year are allowed at Death Valley National Park along the California-Nevada border.