PUBLIC LAWS-CH. 251- -MAY 13, 1946 [CHAPTER 251] AN ACT May 13, 1946 [S. 21 To provide Federal aid for the development of public airports. [Public Law 377] Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled, SHORT TITLE SECTION 1. This Act may be cited as the "Federal Airport Act". PROVISIONS OF GENERAL APPLICATION Definitions SEC. 2. (a) As used in this Act- "Administrator." (1) "Administrator" means the Administrator of Civil Aero- nautics. "Airport." (2) "Airport" means any area of land or water which is used, or intended for use, for the landing and take-off of aircraft, and any appurtenant areas which are used, or intended for use, for airport buildings or other airport facilities or rights-of-way, together with all A airport buildings and facilities located thereon. menAt." develop- (3) "Airport development" means (A) any work involved in con- structing, improving, or repairing a public airport or portion thereof, including the construction, alteration, and repair of airport adminis- trative buildings and the removal, lowering, relocation, and marking and lighting of airport hazards, and (B) any acquisition of land or of any interest therein, or of any easement through or other interest in air space, which is necessary to permit any such work or to remove or mitigate, or prevent or limit the establishment of, airport hazards; Airport hangars. but such term does not include the construction, alteration, or repair of airport hangars. "Airport hazard." (4) "Airport hazard" means any structure or object of natural growth located on or in the vicinity of a public airport, or any use of land near such airport, which obstructs the air space required for the flight of aircraft in landing or taking off at such airport or is otherwise hazardous to such landing or taking off of aircraft. "Project." (5) "Project" means a project for the accompllishment of airport development with respect to a particular airport. "Project costs." (6) "Project costs" means any costs involved in accomplishing a project under this Act, including those of making field surveys, prep- aration of plans and specifications, supervision and inspection of construction work, procurement of the accomplishment of such work by contract, and acquisition of land or interests therein or easements through or other interests in air space, and also including administra- tive and other incidental costs incurred specifically in connection with the accomplishment of a project, and which would not have been incurred otherwise. "Public agency." (7) "Public agency" means the United States Government or an agency thereof; a State, the Territory of Alaska, the Territory of Hawaii, or Puerto Rico, or an agency of any of them; a municipality or other political subdivision; or a tax-supported organization. " Public airport." (8) "Public airport" means any airport which is used or to be used for public purposes, under the control of a public agency, the landing area of which is publicly owned. "Sponsor." (9) "Sponsor" means any public agency which, either individually or jointly with one or more other public agencies, submits to the Administrator, in accordance with this Act, an application for a grant of funds for airport development. 170 [60 STAT.