In this subchapter—

((1)) “air carrier” has the meaning given such term in section 40102.

((2)) “airport”—

((A)) means—

((i)) an area of land or water used or intended to be used for the landing and taking off of aircraft;

((ii)) an appurtenant area used or intended to be used for airport buildings or other airport facilities or rights of way; and

((iii)) airport buildings and facilities located in any of those areas; and

((B)) includes a heliport.

((3)) “airport development” means the following activities, if undertaken by the sponsor, owner, or operator of a public-use airport:

((A)) constructing, repairing, or improving a public-use airport, including—

((i)) removing, lowering, relocating, marking, and lighting an airport hazard;

((ii)) preparing a plan or specification, including carrying out a field investigation; and

((iii)) a secondary runway at a nonhub airport that is equivalent in size and type to the primary runway of such airport.

((B)) acquiring for, or installing at, a public-use airport—

((i)) a navigation aid or another aid (including a precision approach system) used by aircraft for landing at or taking off from the airport, including preparing the site as required by the acquisition or installation;

((ii)) safety or security equipment, including explosive detection devices, universal access systems, and emergency call boxes, the Secretary requires by regulation for, or approves as contributing significantly to, the safety or security of individuals and property at the airport and integrated in-pavement lighting systems for runways and taxiways and other runway and taxiway incursion prevention devices;

((iii)) equipment to remove snow, to measure runway surface friction, or for aviation-related weather reporting, including closed circuit weather surveillance equipment and fuel infrastructure for such equipment to remove snow if the airport is located in Alaska;

((iv)) firefighting and rescue equipment at an airport that serves scheduled passenger operations of air carrier aircraft designed for more than 9 passenger seats;

((v)) aircraft deicing equipment and structures (except aircraft deicing fluids and storage facilities for the equipment and fluids);

((vi)) interactive training systems;

((vii)) windshear detection equipment that is certified by the Administrator of the Federal Aviation Administration;

((viii)) stainless steel adjustable lighting extensions approved by the Administrator;

((ix)) engineered materials arresting systems as described in the Advisory Circular No. 150/5220–22 published by the Federal Aviation Administration on , including any revision to the circular;

((x)) replacement of baggage conveyor systems, and reconfiguration of terminal baggage areas, that the Secretary determines are necessary to install bulk explosive detection devices; except that such activities shall be eligible for funding under this subchapter only using amounts apportioned under section 47114; and

((xi)) a medium intensity approach lighting system with runway alignment indicator lights.

((C)) acquiring an interest in land or airspace, including land for future airport development, that is needed—

((i)) to carry out airport development described in subclause (A) or (B) of this clause; or

((ii)) to remove or mitigate an existing airport hazard or prevent or limit the creation of a new airport hazard.

((D)) acquiring land for, or constructing, a burn area training structure on or off the airport to provide live fire drill training for aircraft rescue and firefighting personnel required to receive the training under regulations the Secretary prescribes, including basic equipment and minimum structures to support the training under standards the Administrator of the Federal Aviation Administration prescribes.

((E)) relocating an air traffic control tower and any navigational aid (including radar) if the relocation is necessary to carry out a project approved by the Secretary under this subchapter or under section 40117.

((F)) constructing, reconstructing, repairing, or improving an airport, or purchasing capital equipment for an airport, if necessary for compliance with the responsibilities of the operator or owner of the airport under the Americans with Disabilities Act of 1990 ( et seq.), the Clean Air Act ( et seq.), and the Federal Water Pollution Control Act ( et seq.), except constructing or purchasing capital equipment that would benefit primarily a revenue-producing area of the airport used by a nonaeronautical business.

((G)) acquiring land for, or work necessary to construct, a pad suitable for deicing aircraft before takeoff at a commercial service airport, including constructing or reconstructing paved areas, drainage collection structures, treatment and discharge systems, appropriate lighting, paved access for deicing vehicles and aircraft, and including acquiring glycol recovery vehicles, but not including acquiring aircraft deicing fluids or constructing or reconstructing storage facilities for aircraft deicing equipment or fluids.

((H)) routine work to preserve and extend the useful life of runways, taxiways, and aprons at nonhub airports and airports that are not primary airports, under guidelines issued by the Administrator of the Federal Aviation Administration.

((I)) constructing, reconstructing, or improving an airport, or purchasing nonrevenue generating capital equipment to be owned by an airport, for the purpose of transferring passengers, cargo, or baggage between the aeronautical and ground transportation modes on airport property.

((J)) constructing an air traffic control tower or acquiring and installing air traffic control, communications, and related equipment at an air traffic control tower under the terms specified in section 47124(b)(4).

((K)) work necessary to construct or modify airport facilities to provide low-emission fuel systems, gate electrification, and other related air quality improvements at a commercial service airport.

((L)) a project by a commercial service airport for the acquisition of airport-owned vehicles or ground support equipment equipped with low-emission technology if the vehicles are;

((i)) used exclusively on airport property; or

((ii)) used exclusively to transport passengers and employees between the airport and the airport’s consolidated rental car facility or an intermodal surface transportation facility adjacent to the airport.

((M)) construction of mobile refueler parking within a fuel farm at a nonprimary airport meeting the requirements of section 112.8 of title 40, Code of Federal Regulations.

((N)) terminal development under section 47119(a).

((O)) acquiring and installing facilities and equipment to provide air conditioning, heating, or electric power from terminal-based, nonexclusive use facilities to aircraft parked at a public use airport for the purpose of reducing energy use or harmful emissions as compared to the provision of such air conditioning, heating, or electric power from aircraft-based systems.

((P)) an on-airport project to improve reliability and efficiency of the power supply of the airport or meet current and future electrical power demand and to prevent power disruptions to the airfield, passenger terminal, and any other airport facilities, including the acquisition and installation of electrical generators, renewable energy generation and storage infrastructure (including necessary substation upgrades to support such infrastructure), separation of the airport’s main power supply from its redundant power supply, the construction or modification of airport facilities to install a microgrid (as defined in section 641 of the United States Energy Storage Competitiveness Act of 2007 ()), and smart glass (including electrochromic glass).

((Q)) converting or retrofitting vehicles and ground support equipment into eligible zero-emission vehicles and equipment (as defined in section 47136) and for acquiring, by purchase or lease, eligible zero-emission vehicles and equipment.

((R)) predevelopment planning, including financial, legal, or procurement consulting services, related to an application or proposed application for an exemption under section 47134.

((S)) acquisition of advanced digital construction management systems and related technology used in the planning, design and engineering, construction, and maintenance of airport facilities when such systems or technologies are acquired to carry out a project approved by the Secretary under this subchapter.

((T)) improvements, or planning for improvements (including monitoring equipment or services), that would be necessary to sustain commercial service flight operations or permit the resumption of such flight operations following a natural disaster (including an earthquake, flooding, high water, wildfires, hurricane, storm surge, tidal wave, tornado, tsunami, wind driven water, sea level rise, tropical storm, cyclone, land instability, or winter storm) at—

((i)) a primary airport; or

((ii)) a nonprimary airport that is designated as a Federal staging area or incident support base by the Administrator of the Federal Emergency Management Agency.

((U)) a project to comply with rulemakings and recommendations on airport cybersecurity standards from the aviation rulemaking committee convened under section 395 of the FAA Reauthorization Act of 2024.

((V)) reconstructing or rehabilitating an existing crosswind runway (regardless of the wind coverage of the primary runway) if the reconstruction or rehabilitation of such crosswind runway is in the most recently approved airport layout plan of the sponsor.

((W)) constructing or acquiring such airport-owned infrastructure or equipment, notwithstanding revenue producing capability of such infrastructure or equipment, as may be required for—

((i)) the on-airport distribution or storage of unleaded aviation gasoline for piston-driven aircraft, including on-airport construction or expansion of pipelines, storage tanks, low-emission fuel systems, and airport-owned fuel trucks providing exclusively unleaded aviation fuels (unless the Secretary determines that an alternative fuel may be safely used in such fuel truck for a limited time); or

((ii)) fueling systems for type certificated hydrogen-powered aircraft.

((X)) constructing, reconstructing, or rehabilitating a taxiway or taxilane that serves non-exclusive use aeronautical facilities, including aircraft storage facilities, except for the 50 feet of pavement immediately in front of an ineligible building.

((Y)) any other activity (excluding terminal development) that the Secretary concludes will reasonably improve the safety of the airport.

((4)) “airport hazard” means a structure or object of natural growth located on or near a public-use airport, or a use of land near the airport, that obstructs or otherwise is hazardous to the landing or taking off of aircraft at or from the airport.

((5)) “airport planning” means planning as defined by requirements the Secretary prescribes and includes—

((A)) integrated airport system planning and catchment area analyses;

((B)) developing an environmental management system;

((C)) developing a plan for recycling and minimizing the generation of airport solid waste, consistent with applicable State and local recycling laws, including the cost of a waste audit; and

((D)) assessing current and future electrical power demand for airport airside and landside activities.

((6)) “amount made available under section 48103” or “amount newly made available” means the amount authorized for grants under section 48103 as that amount may be limited in that year by a subsequent law, but as determined without regard to grant obligation recoveries made in that year or amounts covered by section 47107(f).

((7)) “commercial service airport” means a public airport in a State that the Secretary determines has at least 2,500 passenger boardings each year and is receiving scheduled passenger aircraft service.

((8)) “general aviation airport” means a public-use airport that is located in a State and that, as determined by the Secretary—

((A)) does not have scheduled service; or

((B)) has scheduled service with less than 2,500 passenger boardings each year.

((9)) “integrated airport system planning” means developing for planning purposes information and guidance to decide the extent, kind, location, and timing of airport development needed in a specific area to establish a viable, balanced, and integrated system of public-use airports, including—

((A)) identifying system needs;

((B)) developing an estimate of systemwide development costs;

((C)) conducting studies, surveys, and other planning actions, including those related to airport access, needed to decide which aeronautical needs should be met by a system of airports; and

((D)) standards prescribed by a State, except standards for safety of approaches, for airport development at nonprimary public-use airports.

((10)) “landed weight” means the weight of aircraft transporting only cargo in intrastate, interstate, and foreign air transportation, as the Secretary determines under regulations the Secretary prescribes.

((11)) “large hub airport” means a commercial service airport that has at least 1.0 percent of the passenger boardings.

((12)) “low-emission technology” means technology for vehicles and equipment whose emission performance is the best achievable under emission standards established by the Environmental Protection Agency and that relies exclusively on alternative fuels that are substantially nonpetroleum based, as defined by the Department of Energy, but not excluding hybrid systems or natural gas powered vehicles.

((13)) “medium hub airport” means a commercial service airport that has at least 0.25 percent but less than 1.0 percent of the passenger boardings.

((14)) “nonhub airport” means a commercial service airport that has less than 0.05 percent of the passenger boardings.

((15)) “passenger boardings”—

((A)) means, unless the context indicates otherwise, revenue passenger boardings in the United States in the prior calendar year on an aircraft in service in air commerce, as the Secretary determines under regulations the Secretary prescribes; and

((B)) includes passengers who continue on an aircraft in international flight that stops at an airport in the 48 contiguous States, Alaska, or Hawaii for a nontraffic purpose.

((16)) “primary airport” means a commercial service airport the Secretary determines to have more than 10,000 passenger boardings each year.

((17)) “project” means a project, separate projects included in one project grant application, or all projects to be undertaken at an airport in a fiscal year, to achieve airport development or airport planning.

((18)) “project cost” means a cost involved in carrying out a project.

((19)) “project grant” means a grant of money the Secretary makes to a sponsor to carry out at least one project.

((20)) “public agency” means—

((A)) a State or political subdivision of a State;

((B)) a tax-supported organization;

((C)) an Indian tribe or pueblo; or

((D)) the Republic of the Marshall Islands, Federated States of Micronesia, and Republic of Palau.

((21)) “public airport” means an airport used or intended to be used for public purposes—

((A)) that is under the control of a public agency; and

((B)) of which the area used or intended to be used for the landing, taking off, or surface maneuvering of aircraft is publicly owned.

((22)) “public-use airport” means—

((A)) a public airport; or

((B)) a privately-owned airport used or intended to be used for public purposes that is—

((i)) a reliever airport; or

((ii)) determined by the Secretary to have at least 2,500 passenger boardings each year and to receive scheduled passenger aircraft service.

((23)) “reliever airport” means an airport the Secretary designates to relieve congestion at a commercial service airport and to provide more general aviation access to the overall community.

((24)) “revenue producing aeronautical support facilities” means fuel farms, hangar buildings, self-service credit card aeronautical fueling systems, airplane wash racks, major rehabilitation of a hangar owned by a sponsor, or other aeronautical support facilities that the Secretary determines will increase the revenue producing ability of the airport.

((25)) “small hub airport” means a commercial service airport that has at least 0.05 percent but less than 0.25 percent of the passenger boardings.

((26)) “sponsor” means—

((A)) a public agency that submits to the Secretary under this subchapter an application for financial assistance; and

((B)) a private owner of a public-use airport that submits to the Secretary under this subchapter an application for financial assistance for the airport.

((27)) “State” means a State of the United States, the District of Columbia, Puerto Rico, the Virgin Islands, American Samoa, the Northern Mariana Islands, and Guam.

((28)) “terminal development” means—

((A)) development of—

((i)) an airport passenger terminal building, including terminal gates;

((ii)) access roads servicing exclusively airport traffic that leads directly to or from an airport passenger terminal building; and

((iii)) walkways that lead directly to or from an airport passenger terminal building; and

((B)) the cost of a vehicle for moving passengers and baggage between terminal facilities and between terminal facilities and aircraft.