Pub. L. 91-258, tit. I, pt. I, sec. 4
COST ALLOCATION STUDY.
SEC. 4. COST ALLOCATION STUDY.The Secretary of Transportation shall conduct a study respecting the appropriate method for allocating the cost of the airport and airway system among the various users, and shall identify the cost to the Federal Government that should appropriately be charged to the system and the value to be assigned to any general public benefit, including military, which may Ire determined to exist, hi conducting the study the Secretary shall consult fully with and give careful consideration to the views of the users of the system. The Secretary shall report the results of the study to Congress within two years from the date of enactment of this title.