“A federal appeals court in May 2020 ruled that Glacier, along with 22 other national parks had to come up with an air tour management plan with the federal Aviation Administration within two years. The ruling came after a lawsuit was filed in 2017 by the Public Employees for Environmental Responsibility (PEER).
Glacier’s General Management Plan, which was finalized in 1999, called for no commercial air tour flights over the park, but it was never implemented.”