Mont. Code Ann. § 67-11-202

An authority is authorized to adopt, amend, and repeal such reasonable resolutions, rules, and orders as it shall deem necessary for the management, government, and use of any airport or air navigation facility owned by it or under its control. No rule, order, or standard prescribed by the commission shall be inconsistent with or contrary to any act of the congress of the United States or any regulation promulgated or standard established pursuant thereto. The authority shall keep on file at the principal office of the authority for public inspection a copy of all its rules.