Congress did not leave FAA to act at large but provided in 611 (d), as amended, particularized standards:
There is, to be sure, no express provision of pre-emption in the 1972 Act. That, however, is not decisive. As we stated in Rice v. Santa Fe Elevator Corp., 331 U.S. 218, 230:
[FN 10] S. Rep. No. 92-1160, pp. 10-11.
[FN 12] Hearing before the Aviation Subcommittee of the Senate Committee on Commerce on S. 707 and H. R. 3400, Aircraft Noise Abatement Regulation, 90th Cong., 2d Sess., 29.
[FN 14] The letter from the Secretary of Transportation also expressed the view that "the proposed legislation will not affect the rights of a State or local public agency, as the proprietor of an airport, from issuing regulations or establishing requirements as to the permissible level of noise which can be created by aircraft using the airport. Airport owners acting as proprietors can presently deny the use of their airports to aircraft on the basis of noise considerations so long as such exclusion is nondiscriminatory." (Emphasis added.) This portion as well was quoted with approval in the Senate Report. Ibid.
Appellants and the Solicitor General submit that this indicates that a municipality with jurisdiction over an airport has the power to impose a curfew on the airport, notwithstanding federal responsibility in the area. But, we are concerned here not with an ordinance imposed by the City of Burbank as "proprietor" of the airport, but with the exercise of police power. While the Hollywood-Burbank Airport may be the only major airport which is privately owned, many airports are owned by one municipality yet physically located in another. For example, the principal airport serving Cincinnati is located in Kentucky. Thus, authority that a municipality may have as a landlord is not necessarily congruent with its police power. We do not consider here what limits, if any, apply to a municipality as a proprietor.
[FN 16] Id., at 35886.
[FN 17] Id., at 37075.
[FN 18] Id., at 37083.
When the President signed the bill he stated that "many of the most significant sources of noise move in interstate commerce and can be effectively regulated only at the federal level." [FN20]
The FNL would be determined as a function of the takeoff and approach noise levels of each airplane in the fleet and the number of takeoffs and landings of the fleet. Until July 1, 1976, the cumulative noise level of any fleet subject to regulation could not exceed the FNL during the previous 90-day base period. In 1976 each fleet would be required to reduce its FNL by 50% of the difference between the original base-period level and the level ultimately required by 14 CFR pt. 36.
Prior to April 1970, 21 regional Air Route Traffic Control Centers exercised independent control over traffic flow in their areas. In April 1970 FAA established a Central Flow Facility to coordinate flow control throughout the Air Traffic Control system. This change was necessitated because no regional center "had enough information to make a judgment based on the overall condition of the ATC system. . . ." Fourth Annual Report of the Secretary of Transportation for Fiscal Year 1970.