97-562: A heliport , sometimes referred to as a vertiport , are small airports which has a helipad , suitable for use by helicopters , powered lift aircrafts , and various types of vertical lift aircraft . Designated heliports typically contain one or more touchdown and liftoff areas and may also have limited facilities such as fuel or hangars. In some larger towns and cities, customs facilities may also be available. Early advocates of helicopters hoped that heliports would become widespread, but they have become contentious in urban areas due to
194-644: A Public Private Partnership wherein Adani Group , the operator pays Airports Authority of India , the owner of the airports, a predetermined sum of money based on the number of passengers handled by the airports. The rest of India's airports are managed by the Airports Authority of India . In Pakistan nearly all civilian airports are owned and operated by the Pakistan Civil Aviation Authority except for Sialkot International Airport which has
291-520: A landing area , which comprises an aerially accessible open space including at least one operationally active surface such as a runway for a plane to take off and to land or a helipad , and often includes adjacent utility buildings such as control towers , hangars and terminals , to maintain and monitor aircraft. Larger airports may have airport aprons , taxiway bridges , air traffic control centres, passenger facilities such as restaurants and lounges , and emergency services . In some countries,
388-411: A windsock beside a landing strip. Types of runway safety incidents include: The choice of material used to construct the runway depends on the use and the local ground conditions. For a major airport, where the ground conditions permit, the most satisfactory type of pavement for long-term minimum maintenance is concrete . Although certain airports have used reinforcement in concrete pavements, this
485-480: A 7 will indicate 7,000 ft (2,134 m) remaining. The runway threshold is marked by a line of green lights. [REDACTED] There are three types of runways: Waterways may be unmarked or marked with buoys that follow maritime notation instead. For runways and taxiways that are permanently closed, the lighting circuits are disconnected. The runway threshold, runway designation, and touchdown markings are obliterated and yellow "Xs" are placed at each end of
582-469: A base typically includes a stretch of open water for takeoffs and landings , and seaplane docks for tying-up. An international airport has additional facilities for customs and passport control as well as incorporating all the aforementioned elements. Such airports rank among the most complex and largest of all built typologies, with 15 of the top 50 buildings by floor area being airport terminals. Smaller or less-developed airfields, which represent
679-916: A dedicated large heliport facility dedicated such as the LAPD Hooper Heliport . Some skyscrapers feature rooftop heliports to serve the transport needs of executives or clients. Many of these rooftop sites also serve as Emergency Helicopter Landing Facilities (EHLF), in case emergency evacuation is needed. The U.S. Bank Tower in Los Angeles is an example. Helipads are common features at hospitals , where they serve to facilitate helicopter air ambulance and MEDEVACs for transferring patients into and out of hospital facilities. Some large trauma centers may have multiple helipads, while most small hospitals have just one. Helipads allow hospitals to accept patients flown in from remote accident sites, where there are no local hospitals or facilities capable of providing
776-583: A destination, or even to the city's main airport, is that travel can be much faster than by surface transport. As an example, the Downtown Manhattan Heliport in New York City provides scheduled service to John F. Kennedy International Airport , and is used to move wealthy persons and important goods quickly to destinations as far away as Maryland . Police departments use heliports as a base for police helicopters , and larger departments may have
873-479: A landing site for the Space Shuttle . Takeoff and landing distances available are given using one of the following terms: There are standards for runway markings. There are runway markings and signs on most large runways. Larger runways have a distance remaining sign (black box with white numbers). This sign uses a single number to indicate the remaining distance of the runway in thousands of feet. For example,
970-399: A lighted wind cone is also required. At ground-based heliports, lead-in lights may be incorporated to identify the preferred approach / departure direction. Visual slope guidance systems (such as HAPI, PAPI, etc.) are recommended options in both ICAO and FAA documents. While airports commonly use 6.6A direct current power, heliport lighting is normally AC powered . Radio control of
1067-528: A mistake in handling of the passenger, such as unreasonable delays or mishandling of checked baggage. Airline lounges frequently offer free or reduced cost food, as well as alcoholic and non-alcoholic beverages. Lounges themselves typically have seating , showers, quiet areas, televisions, computer, Wi-Fi and Internet access, and power outlets that passengers may use for their electronic equipment. Some airline lounges employ baristas, bartenders and gourmet chefs. Airlines sometimes operate multiple lounges within
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#17328512144921164-557: A number of regulations and safety measures have been implemented in airports, in order to reduce hazards. Additionally, airports have major local environmental impacts, as both large sources of air pollution , noise pollution and other environmental impacts, making them sites that acutely experience the environmental effects of aviation . Airports are also vulnerable infrastructure to extreme weather , climate change caused sea level rise and other disasters. The terms aerodrome , airfield , and airstrip also refer to airports, and
1261-542: A periodic basis. Fields with very low traffic of light planes may use a sod surface. Some runways make use of salt flats. For pavement designs, borings are taken to determine the subgrade condition, and based on the relative bearing capacity of the subgrade, the specifications are established. For heavy-duty commercial aircraft, the pavement thickness, no matter what the top surface, varies from 10 to 48 in (25 to 122 cm), including subgrade. Airport pavements have been designed by two methods. The first, Westergaard ,
1358-490: A plane of 100,000 pounds and the price increases with weight. Non-aeronautical revenue is gained through things other than aircraft operations. It includes lease revenue from compatible land-use development, non-aeronautical building leases, retail and concession sales, rental car operations, parking and in-airport advertising. Concession revenue is one big part of non-aeronautical revenue airports makes through duty free , bookstores, restaurants and money exchange. Car parking
1455-460: A retail store upon exiting security. Airport planners sometimes incorporate winding routes within these stores such that passengers encounter more goods as they walk towards their gate. Planners also install artworks next to the airport's shops in order to draw passengers into the stores. Apart from major fast food chains, some airport restaurants offer regional cuisine specialties for those in transit so that they may sample local food without leaving
1552-409: A series of gates , which provide passengers with access to the plane. Passenger facilities typically include: Links between passenger facilities and aircraft include jet bridges or airstairs . Baggage handling systems transport baggage from the baggage drop-off to departing planes, and from arriving planes to the baggage reclaim. The area where the aircraft parks to load passengers and baggage
1649-415: A third parallel runway was opened at Phoenix Sky Harbor International Airport in 2000 to the south of existing 8R/26L—rather than confusingly becoming the "new" 8R/26L it was instead designated 7R/25L, with the former 8R/26L becoming 7L/25R and 8L/26R becoming 8/26. Suffixes may also be used to denote special use runways. Airports that have seaplane waterways may choose to denote the waterway on charts with
1746-483: Is a growing source of revenue for airports, as more people use the parking facilities of the airport. O'Hare International Airport in Chicago charges $ 2 per hour for every car. Many airports are local monopolies. To prevent them from abusing their market power, governments regulate how much airports may charge to airlines, using price-cap regulation . Airports are divided into landside and airside zones. The landside
1843-412: Is a legal term of art reserved exclusively for those aerodromes certified or licensed as airports by the relevant civil aviation authority after meeting specified certification criteria or regulatory requirements. That is to say, all airports are aerodromes, but not all aerodromes are airports. In jurisdictions where there is no legal distinction between aerodrome and airport , which term to use in
1940-486: Is a series of highly complex operations that requires managing frequent traffic that moves in all three dimensions. A "towered" or "controlled" airport has a control tower where the air traffic controllers are based. Pilots are required to maintain two-way radio communication with the controllers, and to acknowledge and comply with their instructions. A " non-towered " airport has no operating control tower and therefore two-way radio communications are not required, though it
2037-581: Is also common to connect an airport and a city with rapid transit , light rail lines or other non-road public transport systems. Some examples of this would include the AirTrain JFK at John F. Kennedy International Airport in New York , Link light rail that runs from the heart of downtown Seattle to Seattle–Tacoma International Airport , and the Silver Line T at Boston 's Logan International Airport by
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#17328512144922134-445: Is an extrapolation of the original test results, which are not applicable to modern aircraft pavements or to modern aircraft landing gear . Some designs were made by a mixture of these two design theories. A more recent method is an analytical system based on the introduction of vehicle response as an important design parameter. Essentially it takes into account all factors, including the traffic conditions, service life, materials used in
2231-463: Is based on the assumption that the pavement is an elastic plate supported on a heavy fluid base with a uniform reaction coefficient known as the K value . Experience has shown that the K values on which the formula was developed are not applicable for newer aircraft with very large footprint pressures. The second method is called the California bearing ratio and was developed in the late 1940s. It
2328-648: Is common for airports to provide moving walkways , buses, and rail transport systems. Some airports like Hartsfield–Jackson Atlanta International Airport and London Stansted Airport have a transit system that connects some of the gates to a main terminal. Airports with more than one terminal have a transit system to connect the terminals together, such as John F. Kennedy International Airport , Mexico City International Airport and London Gatwick Airport . Airport operations are made possible by an organized network of trained personnel , specialized equipment, and spatial data . After thousands of ground operations staff left
2425-399: Is considered to have the longest takeoff distance of the more common aircraft types and has set the standard for runway lengths of larger international airports. At sea level , 3,200 m (10,500 ft) can be considered an adequate length to land virtually any aircraft. For example, at O'Hare International Airport , when landing simultaneously on 4L/22R and 10/28 or parallel 9R/27L, it
2522-418: Is generally found to be unnecessary, with the exception of expansion joints across the runway where a dowel assembly, which permits relative movement of the concrete slabs, is placed in the concrete. Where it can be anticipated that major settlements of the runway will occur over the years because of unstable ground conditions, it is preferable to install asphalt concrete surface, as it is easier to patch on
2619-472: Is good operating practice for pilots to transmit their intentions on the airport's common traffic advisory frequency (CTAF) for the benefit of other aircraft in the area. The CTAF may be a Universal Integrated Community (UNICOM), MULTICOM, Flight Service Station (FSS), or tower frequency. The majority of the world's airports are small facilities without a tower. Not all towered airports have 24/7 ATC operations. In those cases, non-towered procedures apply when
2716-408: Is included for all ICAO and some U.S. military airports (such as Edwards Air Force Base ). However, most U.S. civil aviation airports drop the leading zero as required by FAA regulation. This also includes some military airfields such as Cairns Army Airfield . This American anomaly may lead to inconsistencies in conversations between American pilots and controllers in other countries. It
2813-649: Is known as an apron or ramp (or incorrectly, "the tarmac"). Airport security normally requires baggage checks, metal screenings of individual persons, and rules against any object that could be used as a weapon. Since the September 11 attacks and the Real ID Act of 2005 , airport security has dramatically increased and gotten tighter and stricter than ever before. Most major airports provide commercial outlets for products and services. Most of these companies, many of which are internationally known brands, are located within
2910-454: Is most nearly aligned with the wind. Airports with one runway are often constructed to be aligned with the prevailing wind . Compiling a wind rose is one of the preliminary steps taken in constructing airport runways. Wind direction is given as the direction the wind is coming from : a plane taking off from runway 09 faces east, into an "east wind" blowing from 090°. Originally in the 1920s and 1930s, airports and air bases (particularly in
3007-420: Is rated for, as well as the maximum size helicopter the helipad has been designed to accommodated, which is based on the helicopter rotor diameter and overall length of the largest design helicopter that will service the helipad. Under normal conditions, it is standard practice to paint the maximum gross weight a helipad is designed to support in either metric tonnes, kilograms, or thousands of pounds, along with
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3104-567: Is routine for arrivals from East Asia , which would normally be vectored for 4L/22R (2,300 m (7,546 ft)) or 9R/27L (2,400 m (7,874 ft)) to request 28R (4,000 m (13,123 ft)). It is always accommodated, although occasionally with a delay. Another example is that the Luleå Airport in Sweden was extended to 3,500 m (11,483 ft) to allow any fully loaded freight aircraft to take off. These distances are also influenced by
3201-451: Is slow, runway designation changes are uncommon, and not welcomed, as they require an accompanying change in aeronautical charts and descriptive documents. When a runway designation does change, especially at major airports, it is often done at night, because taxiway signs need to be changed and the numbers at each end of the runway need to be repainted to the new runway designators. In July 2009 for example, London Stansted Airport in
3298-489: Is subject to fewer special laws and is part of the public realm, while access to the airside zone is tightly controlled. Landside facilities may include publicly accessible airport check-in desks, shops and ground transportation facilities. The airside area includes all parts of the airport around the aircraft, and the parts of the buildings that are restricted to staff, and sections of these extended to travelling, airside shopping , dining, or waiting passengers. Depending on
3395-600: Is the lowest elevation of the edge of the TLOF. The Safety Area is a defined area on a heliport surrounding the FATO intended to reduce the risk of damage to helicopters accidentally diverging from the FATO. In a large metropolitan and urban areas, a heliport can serve passengers needing to quickly move within the city, or to outlying regions. Generally, heliports can be situated closer to a town or city center than an airport for fixed-wing aircraft . The advantage in flying by helicopter to
3492-459: Is usually adequate for aircraft weights below approximately 100,000 kg (220,000 lb). Larger aircraft including widebodies will usually require at least 2,400 m (7,900 ft) at sea level. International widebody flights, which carry substantial amounts of fuel and are therefore heavier, may also have landing requirements of 3,200 m (10,500 ft) or more and takeoff requirements of 4,000 m (13,000 ft). The Boeing 747
3589-557: Is very common in a country such as Canada for a controller to clear an incoming American aircraft to, for example, runway 04, and the pilot read back the clearance as runway 4. In flight simulation programs those of American origin might apply U.S. usage to airports around the world. For example, runway 05 at Halifax will appear on the program as the single digit 5 rather than 05. Military airbases may include smaller paved runways known as "assault strips" for practice and training next to larger primary runways. These strips eschew
3686-582: The International Civil Aviation Organization (ICAO), a runway is a "defined rectangular area on a land aerodrome prepared for the landing and takeoff of aircraft ". Runways may be a human-made surface (often asphalt , concrete , or a mixture of both) or a natural surface ( grass , dirt , gravel , ice , sand or salt ). Runways, taxiways and ramps , are sometimes referred to as "tarmac", though very few runways are built using tarmac . Takeoff and landing areas defined on
3783-487: The Massachusetts Bay Transportation Authority (MBTA). Such a connection lowers risk of missed flights due to traffic congestion . Large airports usually have access also through controlled-access highways ('freeways' or 'motorways') from which motor vehicles enter either the departure loop or the arrival loop. The distances passengers need to move within a large airport can be substantial. It
3880-426: The 'Touch-down and Lift-off' (TLOF) area, the 'Final Approach and Takeoff' (FATO) area and the 'Safety Area'. The TLOF is a load-bearing, generally paved area, normally centered in the FATO, on which the helicopter lands and / or takes off. The FATO is a defined area over which the pilot completes the final phase of the approach to a hover or a landing, and from which the pilot initiates take-off. The FATO elevation
3977-732: The AATF, as well as pays for the FAA's Operation and Maintenance (O&M) account. The funding of these accounts are dependent on the taxes the airports generate of revenues. Passenger tickets , fuel , and cargo tax are the taxes that are paid by the passengers and airlines help fund these accounts. Airports revenues are divided into three major parts: aeronautical revenue, non-aeronautical revenue, and non-operating revenue. Aeronautical revenue makes up 50% in 2021 (from 54% and 48% in 2019 and 2020, non-aeronautical revenue makes up 34% (40%, 39% in previous years), and non-operating revenue makes up 16% (6%, 14%) of
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4074-539: The FAA under the Code of Federal Regulations Title 14 Part 139, "Certification of Commercial Service Airports" but maintained by the local airport under the regulatory authority of the FAA. Despite the reluctance to privatize airports in the US (contrary to the FAA sponsoring a privatization program since 1996), the government-owned, contractor-operated (GOCO) arrangement is the standard for
4171-853: The Spanish Ferrovial consortium in 2006, has been further divested and downsized to operating just Heathrow. Germany's Frankfurt Airport is managed by the quasi-private firm Fraport . While in India GMR Group operates, through joint ventures, Indira Gandhi International Airport and Rajiv Gandhi International Airport . Bengaluru International Airport is controlled by Fairfax . Chhatrapati Shivaji International Airport , Chaudhary Charan Singh International Airport , Mangalore International Airport , Thiruvananthapuram International Airport , Lokpriya Gopinath Bordoloi International Airport , Jaipur International Airport , Sardar Vallabhbhai Patel International Airport are operated by Adani Group through
4268-430: The TLOF area, and may be flush mounted on the TLOF itself, or mounted just off the TLOF perimeter on short metal or concrete extensions. One alternative to lighting the TLOF if certain criteria are met, is to light the area of the FATO instead. Some locations, due to environmental conditions, illuminate the TLOF and FATO. Lighting should never constitute an obstruction that a helicopter may impact, and for this reason, in
4365-484: The Transitional Surface. The approach surface begins at each end of the heliport primary surface with the same width as the primary surface, and extends outward and upward for a horizontal distance of 4,000 feet (1,200 metres), where its width is 500 feet (150 metres). The slope of the approach surface is 8-to-1 for civil heliports. The Transitional Surfaces extend outward and upward from the lateral boundaries of
4462-833: The U.S., heliport lighting is not allowed to extend above the TLOF or FATO more than 2 inches (51 millimetres). Current standards recommend that all perimeter lighting be green. Prior standards recommended amber lighting for perimeter lights; however this wavelength has been shown to interfere with night vision goggle (NVG) operations, when used with older incandescent lighting. In the past, lighting has been traditionally incandescent , but increasingly, light-emitting diodes (LEDs) are being incorporated, due to lower power requirements and increased life. While flood lights may be used to enhance surface operations, they should not interfere with flight crew night vision, and should be kept off during flight operations, and only used when conducting ground movement operations. To conduct night operations,
4559-457: The US in particular, airports also typically have one or more fixed-base operators , serving general aviation . Airport operations are extremely complex, with a complicated system of aircraft support services, passenger services, and aircraft control services contained within the operation. Thus airports can be major employers, as well as important hubs for tourism and other kinds of transit. Because they are sites of operation for heavy machinery,
4656-646: The United Kingdom changed its runway designations from 05/23 to 04/22 during the night. Runway dimensions vary from as small as 245 m (804 ft) long and 8 m (26 ft) wide in smaller general aviation airports, to 5,500 m (18,045 ft) long and 80 m (262 ft) wide at large international airports built to accommodate the largest jets , to the huge 11,917 m × 274 m (39,098 ft × 899 ft) lake bed runway 17/35 at Edwards Air Force Base in California – developed as
4753-461: The United Kingdom) were built in a triangle-like pattern of three runways at 60° angles to each other. The reason was that aviation was only starting, and although it was known that wind affected the runway distance required, not much was known about wind behaviour. As a result, three runways in a triangle-like pattern were built, and the runway with the heaviest traffic would eventually expand into
4850-551: The aircraft tyres. To maintain the macrotexturing built into the runway by the grooves, maintenance crews engage in airfield rubber removal or hydrocleaning in order to meet required FAA , or other aviation authority friction levels. Subsurface underdrains help provide extended life and excellent and reliable pavement performance. At the Hartsfield Atlanta, GA airport the underdrains usually consist of trenches 18 in (46 cm) wide and 48 in (120 cm) deep from
4947-490: The aircraft. Similarly, import cargo that is offloaded needs to be in bond before the consignee decides to take delivery. Areas have to be kept aside for examination of export and import cargo by the airport authorities. Designated areas or sheds may be given to airlines or freight forward ring agencies. Every cargo terminal has a landside and an airside. The landside is where the exporters and importers through either their agents or by themselves deliver or collect shipments while
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#17328512144925044-414: The airline's clubs. Premium services may sometimes be open to passengers who are members of a different airline's frequent flyer program. This can sometimes be part of a reciprocal deal, as when multiple airlines are part of the same alliance, or as a ploy to attract premium customers away from rival airlines. Sometimes these premium services will be offered to a non-premium passenger if the airline has made
5141-596: The airport that are available for rent by the hour. The smallest type is the capsule hotel popular in Japan. A slightly larger variety is known as a sleep box . An even larger type is provided by the company YOTEL . Some airports provide smoking areas and prayer areas. Airports may also contain premium and VIP services. The premium and VIP services may include express check-in and dedicated check-in counters. These services are usually reserved for first and business class passengers, premium frequent flyers , and members of
5238-447: The airport's main runway, while the other two runways would be either abandoned or converted into taxiways. Runways are named by a number between 01 and 36, which is generally the magnetic azimuth of the runway's heading in deca degrees . This heading differs from true north by the local magnetic declination . A runway numbered 09 points east (90°), runway 18 is south (180°), runway 27 points west (270°) and runway 36 points to
5335-551: The airport, passengers and staff must be checked by security or border control before being permitted to enter the airside zone. Conversely, passengers arriving from an international flight must pass through border control and customs to access the landside area, in which they exit, unless in airside transit. Most multi-terminal airports have (variously termed) flight/passenger/air connections buses, moving walkways and/or people movers for inter-terminal airside transit. Their airlines can arrange for baggage to be routed directly to
5432-446: The airport. Some airport structures include on-site hotels built within or attached to a terminal building. Airport hotels have grown popular due to their convenience for transient passengers and easy accessibility to the airport terminal. Many airport hotels also have agreements with airlines to provide overnight lodging for displaced passengers. Major airports in such countries as Russia and Japan offer miniature sleeping units within
5529-726: The airside is where loads are moved to or from the aircraft. In addition, cargo terminals are divided into distinct areas – export, import, and interline or transshipment. Airports require parking lots, for passengers who may leave the cars at the airport for a long period of time. Large airports will also have car-rental firms, taxi ranks, bus stops and sometimes a train station. Many large airports are located near railway trunk routes for seamless connection of multimodal transport , for instance Frankfurt Airport , Amsterdam Airport Schiphol , London Heathrow Airport , Tokyo Haneda Airport , Tokyo Narita Airport , Hamad International Airport , London Gatwick Airport and London Stansted Airport . It
5626-537: The ambiguity that would result with more than three parallel runways. For example, in Los Angeles, this system results in runways 6L, 6R, 7L, and 7R, even though all four runways are actually parallel at approximately 69°. At Dallas/Fort Worth International Airport , there are five parallel runways, named 17L, 17C, 17R, 18L, and 18R, all oriented at a heading of 175.4°. Occasionally, an airport with only three parallel runways may use different runway identifiers, such as when
5723-411: The construction, and, especially important, the dynamic response of the vehicles using the landing area. Because airport pavement construction is so expensive, manufacturers aim to minimize aircraft stresses on the pavement. Manufacturers of the larger planes design landing gear so that the weight of the plane is supported on larger and more numerous tires. Attention is also paid to the characteristics of
5820-534: The departure areas. These include clothing boutiques and restaurants and in the US amounted to $ 4.2 billion in 2015. Prices charged for items sold at these outlets are generally higher than those outside the airport. However, some airports now regulate costs to keep them comparable to "street prices". This term is misleading as prices often match the manufacturers' suggested retail price (MSRP) but are almost never discounted. Many new airports include walkthrough duty-free stores that require air passengers to enter
5917-620: The distinction of being the first privately owned public airport in Pakistan and South Asia . In the US, commercial airports are generally operated directly by government entities or government-created airport authorities (also known as port authorities ), such as the Los Angeles World Airports authority that oversees several airports in the Greater Los Angeles area , including Los Angeles International Airport . In Canada,
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#17328512144926014-527: The excessive noise caused by helicopter traffic. In American use a heliport is defined as "an area of land, water, or structure used or intended to be used for the landing and takeoff of helicopters and includes its buildings and facilities if any". A heliport will consist of one or more helipads , which are defined as "a small, designated area, usually with a prepared surface, on a heliport, airport, landing/take-off area, apron/ramp, or movement area used for takeoff, landing, or parking of helicopters". In Canada
6111-410: The facilities used on a flight like water, food, wifi and shows which is paid while paying for an airline ticket . Aircraft parking is also a major revenue source for airports. Aircraft are parked for a certain amount of time before or after takeoff and have to pay to park there. Every airport has its own rates of parking, for example, John F Kennedy airport in New York City charges $ 45 per hour for
6208-606: The federal authority, Transport Canada, divested itself of all but the remotest airports in 1999/2000. Now most airports in Canada are operated by individual legal authorities, such as Vancouver International Airport Authority (although still owned by Transport Canada); some airports, such as Boundary Bay Airport and Pitt Meadows Airport, are municipally owned. Many US airports still lease part or all of their facilities to outside firms, who operate functions such as retail management and parking. All US commercial airport runways are certified by
6305-631: The following: According to Transport Canada 's regulations, the runway-edge lighting must be visible for at least 2 mi (3 km). Additionally, a new system of advisory lighting, runway status lights , is currently being tested in the United States. The edge lights must be arranged such that: Typically the lights are controlled by a control tower , a flight service station or another designated authority. Some airports/airfields (particularly uncontrolled ones ) are equipped with pilot-controlled lighting , so that pilots can temporarily turn on
6402-484: The industry during the COVID-19 pandemic , there have been discussions on the need for systemic improvements in three primary areas: The surfaces where ground operations occur are generally divided into three regions: runways , taxiways , and aprons . Air traffic control (ATC) is the task of managing aircraft movements and making sure they are safe, orderly and expeditious. At the largest airports, air traffic control
6499-496: The lack of designated landing direction. If there is more than one runway pointing in the same direction (parallel runways), each runway is identified by appending left (L), center (C) and right (R) to the end of the runway number to identify its position (when facing its direction)—for example, runways one-five-left (15L), one-five-center (15C), and one-five-right (15R). Runway zero-three-left (03L) becomes runway two-one-right (21R) when used in
6596-432: The landing gear itself, so that adverse effects on the pavement are minimized. Sometimes it is possible to reinforce a pavement for higher loading by applying an overlay of asphaltic concrete or portland cement concrete that is bonded to the original slab. Post-tensioning concrete has been developed for the runway surface. This permits the use of thinner pavements and should result in longer concrete pavement life. Because of
6693-401: The level of emergency care required. The National EMS Pilots Association (NEMSPA) has published multiple white papers, surveys and safety recommendations for the enhancement of hospital helipad operations to improve patient safety. While heliports can be oriented in any direction, they will generally have very definitive approach and departure paths. However, heliports are not numbered in
6790-483: The lighting by the pilot via an automated ground-based controller is also common. To provide for a safe environment to perform normal helicopter landing and take-off operations, each heliport must have unobstructed approach / departure paths. The minimum recommended separation between flight paths is 135 degrees. A heliport approach path is broken down into two distinct airspace surfaces; the Approach Surface, and
6887-409: The lights when the relevant authority is not available. This avoids the need for automatic systems or staff to turn the lights on at night or in other low visibility situations. This also avoids the cost of having the lighting system on for extended periods. Smaller airports may not have lighted runways or runway markings. Particularly at private airfields for light planes, there may be nothing more than
6984-443: The maximum helicopter dimensions in metres or feet. Arrows are oftentimes painted on the heliport to indicate to pilots the preferred approach / departure paths. Other common markings can include ownership, radio frequencies, company logo(s), and magnetic north. To conduct night-time operations, a heliport must have lighting installed that meets specific aeronautical standards. Heliport perimeter lights are generally installed around
7081-403: The name of an aerodrome may be a commercial decision. In US technical/legal usage, landing area is used instead of aerodrome , and airport means "a landing area used regularly by aircraft for receiving or discharging passengers or cargo". An airport solely serving helicopters is called a heliport . An airport for use by seaplanes and amphibious aircraft is called a seaplane base . Such
7178-458: The nearest 10°, this affects some runways sooner than others. For example, if the magnetic heading of a runway is 233°, it is designated Runway 23. If the magnetic heading changes downwards by 5 degrees to 228°, the runway remains Runway 23. If on the other hand the original magnetic heading was 226° (Runway 23), and the heading decreased by only 2 degrees to 224°, the runway becomes Runway 22. Because magnetic drift itself
7275-521: The need for "distinctly marked and carefully prepared landing places, [but] the preparing of the surface of reasonably flat ground [is] an expensive undertaking [and] there would also be a continuous expense for the upkeep." For fixed-wing aircraft , it is advantageous to perform takeoffs and landings into the wind to reduce takeoff or landing roll and reduce the ground speed needed to attain flying speed . Larger airports usually have several runways in different directions, so that one can be selected that
7372-581: The north (360° rather than 0°). When taking off from or landing on runway 09, a plane is heading around 90° (east). A runway can normally be used in both directions, and is named for each direction separately: e.g., "runway 15" in one direction is "runway 33" when used in the other. The two numbers differ by 18 (= 180°). For clarity in radio communications, each digit in the runway name is pronounced individually: runway one-five, runway three-three, etc. (instead of "fifteen" or "thirty-three"). A leading zero, for example in "runway zero-six" or "runway zero-one-left",
7469-558: The one airport terminal allowing ultra-premium customers, such as first class customers, additional services, which are not available to other premium customers. Multiple lounges may also prevent overcrowding of the lounge facilities. In addition to people, airports move cargo around the clock. Cargo airlines often have their own on-site and adjacent infrastructure to transfer parcels between ground and air. Cargo Terminal Facilities are areas where international airports export cargo has to be stored after customs clearance and prior to loading
7566-489: The operation of commercial airports in the rest of the world. The Airport & Airway Trust Fund (AATF) was created by the Airport and Airway Development in 1970 which finances aviation programs in the United States. Airport Improvement Program (AIP), Facilities and Equipment (F&E), and Research, Engineering, and Development (RE&D) are the three major accounts of Federal Aviation Administration which are financed by
7663-589: The opposite direction (derived from adding 18 to the original number for the 180° difference when approaching from the opposite direction). In some countries, regulations mandate that where parallel runways are too close to each other, only one may be used at a time under certain conditions (usually adverse weather ). At large airports with four or more parallel runways (for example, at Chicago O'Hare , Los Angeles , Detroit Metropolitan Wayne County , Hartsfield-Jackson Atlanta , Denver , Dallas–Fort Worth and Orlando ), some runway identifiers are shifted by 1 to avoid
7760-425: The passenger's destination. Most major airports issue a secure keycard , an airside pass to employees, to assist in their reliable, standardized and efficient verification of identity. A terminal is a building with passenger facilities. Small airports have one terminal. Large ones often have multiple terminals, though some large airports, like Amsterdam Airport Schiphol , still have one terminal. The terminal has
7857-433: The primary surface, and from the approach surfaces, at a slope of 2-to-1 for a distance of 250 feet (76 metres), measured horizontally from the centerline of the primary and approach surfaces. Approach paths can either be straight or curved to accommodate obstructions and avoidance areas. Airport An airport is an aerodrome with extended facilities, mostly for commercial air transport . They usually consist of
7954-478: The runway grade (slope) such that, for example, each 1 percent of runway down slope increases the landing distance by 10 percent. An aircraft taking off at a higher altitude must do so at reduced weight due to decreased density of air at higher altitudes, which reduces engine power and wing lift. An aircraft must also take off at a reduced weight in hotter or more humid conditions (see density altitude ). Most commercial aircraft carry manufacturer's tables showing
8051-406: The runway and at 1,000 ft (305 m) intervals. A line of lights on an airfield or elsewhere to guide aircraft in taking off or coming in to land or an illuminated runway is sometimes also known as a flare path . Runway lighting is used at airports during periods of darkness and low visibility. Seen from the air, runway lights form an outline of the runway. A runway may have some or all of
8148-482: The same way that runways at airports are. Recommended standard practice by both the Federal Aviation Administration (FAA) and the International Civil Aviation Organization (ICAO) is to orient a H in the center of the TLOF, in line with the preferred approach / departure direction. An information box should also be included in the TLOF area, which provides the aircraft gross weight the helipad
8245-623: The standard numerical naming convention and instead employ the runway's full three digit heading; examples include Dobbins Air Reserve Base 's Runway 110/290 and Duke Field 's Runway 180/360. Runways with non-hard surfaces, such as small turf airfields and waterways for seaplanes , may use the standard numerical scheme or may use traditional compass point naming, examples include Ketchikan Harbor Seaplane Base 's Waterway E/W. Airports with unpredictable or chaotic water currents, such as Santa Catalina Island 's Pebbly Beach Seaplane Base, may designate their landing area as Waterway ALL/WAY to denote
8342-414: The suffix T; this is advantageous for certain airfields in the far north such as Thule Air Base (08T/26T). Runway designations may change over time because Earth's magnetic lines slowly drift on the surface and the magnetic direction changes. Depending on the airport location and how much drift occurs, it may be necessary to change the runway designation. As runways are designated with headings rounded to
8439-567: The suffix W; such as Daniel K. Inouye International Airport in Honolulu and Lake Hood Seaplane Base in Anchorage . Small airports that host various forms of air traffic may employ additional suffixes to denote special runway types based on the type of aircraft expected to use them, including STOL aircraft (S), gliders (G), rotorcraft (H), and ultralights (U). Runways that are numbered relative to true north rather than magnetic north will use
8536-633: The surface of water for seaplanes are generally referred to as waterways . Runway lengths are now commonly given in meters worldwide , except in North America where feet are commonly used. In 1916, in a World War I war effort context, the first concrete-paved runway was built in Clermont-Ferrand in France , allowing local company Michelin to manufacture Bréguet Aviation military aircraft. In January 1919, aviation pioneer Orville Wright underlined
8633-441: The susceptibility of thinner pavements to frost heave , this process is generally applicable only where there is no appreciable frost action . Runway pavement surface is prepared and maintained to maximize friction for wheel braking. To minimize hydroplaning following heavy rain, the pavement surface is usually grooved so that the surface water film flows into the grooves and the peaks between grooves will still be in contact with
8730-492: The term heliport is legally only used for a certified aerodrome for helicopter use. The airspace immediately surrounding the heliport is called the Primary Surface. This area coincides in shape and size with the designated take-off and landing area. This surface is a horizontal plane equal to the elevation of the established heliport elevation. The Primary Surface is further broken down into three distinct regions. These are,
8827-458: The terms heliport , seaplane base , and STOLport refer to airports dedicated exclusively to helicopters , seaplanes , and short take-off and landing aircraft. In colloquial use in certain environments, the terms airport and aerodrome are often interchanged. However, in general, the term airport may imply or confer a certain stature upon the aviation facility that other aerodromes may not have achieved. In some jurisdictions, airport
8924-547: The top of the pavement. A perforated plastic tube (5.9 in (15 cm) in diameter) is placed at the bottom of the ditch. The ditches are filled with gravel size crushed stone. Excessive moisture under a concrete pavement can cause pumping, cracking, and joint failure. In aviation charts, the surface type is usually abbreviated to a three-letter code. The most common hard surface types are asphalt and concrete. The most common soft surface types are grass and gravel. A runway of at least 1,800 m (5,900 ft) in length
9021-470: The total revenue of airports. Aeronautical revenue are generated through airline rents and landing, passenger service, parking, and hangar fees. Landing fees are charged per aircraft for landing an airplane in the airport property. Landing fees are calculated through the landing weight and the size of the aircraft which varies but most of the airports have a fixed rate and a charge extra for extra weight. Passenger service fees are charges per passengers for
9118-577: The tower is not in use, such as at night. Non-towered airports come under area (en-route) control . Remote and virtual tower (RVT) is a system in which ATC is handled by controllers who are not present at the airport itself. Air traffic control responsibilities at airports are usually divided into at least two main areas: ground and tower , though a single controller may work both stations. The busiest airports may subdivide responsibilities further, with clearance delivery , apron control , and/or other specialized ATC stations. Runway According to
9215-664: The vast majority, often have a single runway shorter than 1,000 m (3,300 ft). Larger airports for airline flights generally have paved runways of 2,000 m (6,600 ft) or longer. Skyline Airport in Inkom, Idaho , has a runway that is only 122 m (400 ft) long. In the United States, the minimum dimensions for dry, hard landing fields are defined by the FAR Landing And Takeoff Field Lengths . These include considerations for safety margins during landing and takeoff. The longest public-use runway in
9312-546: The world is at Qamdo Bamda Airport in China. It has a length of 5,500 m (18,045 ft). The world's widest paved runway is at Ulyanovsk Vostochny Airport in Russia and is 105 m (344 ft) wide. As of 2009 , the CIA stated that there were approximately 44,000 "airports or airfields recognizable from the air" around the world, including 15,095 in the US, the US having the most in
9409-460: The world. Most of the world's large airports are owned by local, regional, or national government bodies who then lease the airport to private corporations who oversee the airport's operation. For example, in the UK the state-owned British Airports Authority originally operated eight of the nation's major commercial airports – it was subsequently privatized in the late 1980s, and following its takeover by
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