The following are definitions of terms used throughout this part:

AADA means the Airport and Airway Development Act of 1970, as amended (49 U.S.C. 1701 et seq.).

Air carrier airport means—

(1) An existing public airport regularly served, or a new public airport that the Administrator determines will be regularly served, by an air carrier, other than a charter air carrier, certificated by the Civil Aeronautics Board under section 401 of the Federal Aviation Act of 1958; and

(2) A commuter service airport.

Airport means—

(1) Any area of land or water that is used, or intended for use, for the landing and takeoff of aircraft;

(2) Any appurtenant areas that are used, or intended for use, for airport buildings, other airport facilities, or rights-of-way; and

(3) All airport buildings and facilities located on the areas specified in this definition.

Airport development means—

(1) Any work involved in constructing, improving, or repairing a public airport or portion thereof, including the removal, lowering, relocation, and marking and lighting or airport hazards, and including navigation aids used by aircraft landing at, or taking off from, a public airport, and including safety equipment required by rule or regulation for certification of the airport under section 612 of the Federal Aviation Act of 1958, and security equipment required of the sponsor by the FAA by rule or regulation for the safety and security of persons or property on the airport, and including snow removal equipment, and including the purchase of noise suppressing equipment, the construction of physical barriers, and landscaping for the purpose of diminishing the effect of aircraft noise on any area adjacent to a public airport.

(2) Any acquisition of land or of any interest therein, or of any easement through or other interest in airspace, including land for future airport development, which is necessary to permit any such work or to remove or mitigate or prevent or limit the establishment of, airport hazards; and

(3) Any acquisition of land or of any interest therein necessary to insure that such land is used only for purposes which are compatible with the noise levels of the operation of a public airport.

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 a public airport, that—

(1) Obstructs the airspace required for the flight of aircraft landing or taking off at the airport; or

(2) Is otherwise hazardous to aircraft landing or taking off at the airport.

Airport layout plan means a plan for the layout of an airport, showing existing and proposed airport facilities.

Airport master planning means the development for planning purposes of information and guidance to determine the extent, type, and nature of development needed at a specific airport.

Airport system planning means the development for planning purposes of information and guidance to determine the extent, type, nature, location, and timing of airport development needed in a specific area to establish a viable and balanced system of public airports.

Audit means the examination and verification of part or all of the documentary evidence supporting an item of project cost in accordance with Attachment P of Office of Management and Budget Circular A-102 (44 FR 60958).

Commuter service airport means an air carrier airport—

(1) That is not served by an air carrier certificated under section 401 of the Federal Aviation Act of 1958;

(2) That is regularly served by one or more air carriers operating under an exemption granted by the Civil Aeronautics Board from section 401(a) of the Federal Aviation Act of 1958; and

(3) At which not less than 2,500 passengers were enplaned during the preceding calendar year by air carriers operating under an exemption from section 401(a).

Force account means—

(1) The sponsor's or planning agency's own labor force; or

(2) The labor force of another public agency acting as an agent of the sponsor or planning agency.

General aviation airport means a public airport other than an air carrier airport.

Landing area means an area used, or intended to be used, for the landing, takeoff, or surface maneuvering of aircraft.

NASP means the National Airport System Plan.

National Airport System Plan means the plan for the development of public airports in the United States formulated by the Administrator under section 12 of the AADA.

Nonrevenue producing public-use areas means areas that are directly related to the movement of passengers and baggage in air commerce within the boundaries of the airport.

Passengers enplaned means—

(1) United States domestic, territorial, and international revenue passenger enplanements in scheduled and nonscheduled service of air carriers; and

(2) Revenue passenger enplanements by foreign air carriers in intrastate and interstate commerce.

Planning agency means a planning agency designated by the Administrator that is authorized by the laws of a State, the Commonwealth of Puerto Rico, the Virgin Islands, American Samoa, the Trust Territory of the Pacific Islands, or Guam, or by the laws of a political subdivision of any of those entities, to engage in areawide planning for the areas in which assistance under this part is to be used.

Project means a project for the accomplishment of airport development, airport master planning, or airport system planning.

Project costs means any costs involved in accomplishing a project.

Project formulation costs means, with respect to projects for airport development, any necessary costs of formulating a project including—

(1) The costs of field surveys and the preparation of plans and specifications;

(2) The acquisition of land or interests in land, or easement through or other interests in airspace; and

(3) Any necessary administrative or other incidental costs incurred by the sponsor specifically in connection with the accomplishment of a project for airport development, that would not have been incurred otherwise.

Public agency means—

(1) A state, the Commonwealth of Puerto Rico, the Virgin Islands, American Samoa, the Trust Territory of the Pacific Islands, the Government of the Northern Marianas, Guam, or any agency of those entities;

(2) A municipality or other political subdivision;

(3) A tax-supported organization; or

(4) An Indian tribe or pueblo.

Public airport means any airport that—

(1) Is used, or intended to be used, for public purposes;

(2) Is under the control of a public agency; and

(3) Has a property interest satisfactory to the Administrator in the landing area.

Reliever airport means a general aviation airport designated by the Administrator as having the primary function of relieving congestion at an air carrier airport by diverting from that airport general aviation traffic.

Runway clear zone means an area at ground level underlying a portion of the approach surface specified in the standards incorporated into this part by § 152.11.

Satisfactory property interest means—

(1) Title free and clear of any reversionary interest, lien, easement, lease, or other encumbrance that, in the opinion of the Administrator would—

(i) Create an undue risk that it might deprive the sponsor of possession or control;

(ii) Interfere with the use of the airport for public airport purposes; or

(iii) Make it impossible for the sponsor to carry out the agreements and convenants in its grant application;

(2) Unless a shorter term is authorized by the Administrator, a lease of not less than 20 years granted to the sponsor by another public agency, or the United States, that has title as described in paragraph (1) of this definition, on terms that the Administrator considers satisfactory;

(3) In the case of an off-airport area, title or an agreement, easement, leasehold or other right or property interest that, in the Administrator's opinion, provides reasonable assurance that the sponsor will not be deprived of its right to use the land for the intended purpose during the period necessary to meet the requirements of the grant agreement; or

(4) In the case of a runway clear zone, an easement or a covenant running with the land, giving the airport operator or owner enough control to rid the clear zone of all airport hazards and prevent the creation of future airport hazards.

Sponsor means any public agency that, whether individually or jointly with one or more other public agencies, submits to the Administrator, in accordance with this part, an application for financial assistance.

Stage development means airport development accomplished under stage construction over not less than two years where the sponsor assures that any development not funded under the initial grant agreement will be completed with or without Federal funds.

State means a State of the United States or the District of Columbia.

Terminal development means airport development in the nonrevenue producing public-use areas which are associated with the terminal and which are directly related to the movement of passengers and baggage in air commerce within the boundaries of the airport, including, but not limited to, vehicles for the movement of passengers between terminal facilities and aircraft.

Unified Planning Work Program means a single document prepared by a local areawide planning agency that identifies all transportation and related planning activities that will be undertaken within the metropolitan area during a one-year or two-year period.