A bill to require the Secretary of the Interior to conduct a study to determine the appropriate minimum altitude for aircraft flying over national park system units.

[AI summary unavailable — showing source text] Directs the Secretary of the Interior, acting through the Director of the National Park Service, to conduct a study of the proper minimum altitude which should be maintained by aircraft flying over areas within units of the national park system. Directs the Secretary of Transportation, acting through the Federal Aviation Administration, to provide technical assistance to the Secretary of the Interior for such study. Requires the Secretary of the Interior to report to the Congress within two years after enactment of this Act regarding the study results. Authorizes appropriations.…