What percentage of the measure of an airline flight's passenger carrying capacity does the IATA's member airlines account for?
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International Air Transport Association The International Air Transport Association (IATA ) is a trade association of the world’s airlines. Consisting of 278 airlines, primarily major carriers, representing 117 countries, the IATA's member airlines account for carrying approximately 83% of total Available Seat Kilometers air traffic. IATA supports airline activity and helps formulate industry policy and standards. It is headquartered in Montreal, Quebec, Canada with Executive Offices in Geneva, Switzerland.
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Available seat miles Available seat miles (ASM) or Available seat kilometres (ASK) is a measure of an airline flight's passenger carrying capacity. It is equal to the number of seats available multiplied by the number of miles or kilometres flown. An available seat mile is the fundamental unit of production for a passenger-carrying airline. A unit in this case is one seat, available for sale, flown one mile. For example, an aircraft with 300 seats available for sale flying 1,000 statute miles would generate 300,000 ASMs for that particular flight. That the seats are available for sale is critical. An aircraft that had 300 seats but which was limited (for regulatory or technical reasons) to selling only 250 of them on a particular flight of 1,000 miles would generate 250,000 ASMs on that flight, not 300,000. Similarly, if passenger seats on a particular flight are dedicated to crew rest purposes, such seats would not be included in the calculation of ASMs for that flight.
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Maximum ramp weight The maximum ramp weight (MRW) (also known as the maximum taxi weight (MTW)) is the maximum weight authorised for manoeuvring (taxiing or towing) an aircraft on the ground as limited by aircraft strength and airworthiness requirements. It includes the weight of taxi and run-up fuel for the engines and the auxiliary power unit (APU).
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Delta Air Lines fleet As of September 2017, the Delta Air Lines mainline fleet comprises 852 aircraft in service, making it one of the largest airline fleets in the world. Before merging with Northwest Airlines in 2009, Delta Air Lines operated an all-Boeing and McDonnell Douglas fleet; it incorporated Northwest's Airbus aircraft into its fleet following the merger and subsequently ordered further Airbus types. Delta is known for its policy of generally buying older generation or used aircraft and for continuing to fly aircraft for 20–30 years, much longer than most other major airlines. As such, it has one of the oldest fleets of any American airline, with an average fleet age of 17 years as of 2017. Fellow U.S. legacy carriers American Airlines and United Airlines have much younger fleets; as of December 29, 2016, American had an average fleet age of 10.3 years, while United had an average fleet age of 14.1 years.
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Change of gauge (aviation) In air transport, a change of gauge for a passenger or cargo flight is a change of aircraft while retaining the same flight number. The term is borrowed from the rail transport practice of gauge change. When a feeder flight connects to a flight on a larger aircraft, this is sometimes called a funnel flight.
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Airport reference point An airport (or aerodrome) reference point (ARP) is the centre point of an airport, located at the geometric centre of all the usable runways. The ARP is computed as a weighted average of the end of runway coordinates.
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Airbus A330 The Airbus A330 is a medium- to long-range wide-body twin-engine jet airliner made by Airbus. Versions of the A330 have a range of 5000 to and can accommodate up to 335 passengers in a two-class layout or carry 70 t of cargo.
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Large aircraft Large aircraft allow the transportation of large and/or heavy payloads over long distances. Making an aircraft design larger can also improve the overall fuel efficiency and man-hours for transporting a given load, while a greater space is available for transporting lightweight cargoes or giving passengers room to move around. However, as aircraft increase in size they pose significant design issues not present in smaller types. These include structural efficiency, flight control response and sufficient power in a reliable and cost-effective installation.
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Fare basis code A fare basis code (often just referred to as a fare basis) is an alpha or alpha-numeric code used by airlines to identify a fare type and allow airline staff and travel agents to find the rules applicable to that fare. Although airlines now set their own fare basis codes, there are some patterns that have evolved over the years and may still be in use.
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Flight envelope In aerodynamics, the flight envelope, service envelope, or performance envelope of an aircraft refers to the capabilities of a design in terms of airspeed and load factor or altitude. The term is somewhat loosely applied, and can also refer to other measurements such as maneuverability. When a plane is pushed, for instance by diving it at high speeds, it is said to be flown "outside the envelope", something considered rather dangerous.
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Air traffic management Air traffic management is an aviation term encompassing all systems that assist aircraft to depart from an aerodrome, transit airspace, and land at a destination aerodrome, including air traffic control (ATC), air traffic safety electronics personnel (ATSEP), aeronautical meteorology, air navigation systems (aids to navigation), Air Space Management (ASM), Air Traffic Services (ATS), and Air Traffic Flow Management (ATFM), or Air Traffic Flow and Capacity Management (ATFCM).
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List of busiest airports by aircraft movements The thirty world's busiest airports by aircraft movements are measured by total movements (data provided by Airports Council International). A movement is a landing or takeoff of an aircraft.
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AirTran Airways AirTran Airways was an American low-cost airline headquartered originally in Orlando, Florida, then in Dallas, Texas, after its acquisition by Southwest Airlines, into which it was integrated. AirTran operated nearly 700 daily flights, primarily in the eastern and midwestern United States, with its principal hub at Hartsfield-Jackson Atlanta International Airport where it operated nearly 200 daily departures. AirTran's fleet consisted of Boeing 717-200 aircraft, of which it was the world's largest operator, and Boeing 737-700 aircraft. It was fully integrated into Southwest Airlines on December 28, 2014.
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Air transportation in the United States The United States has an extensive air transportation network. In 2013 there were 86 airports in the U.S. that annually handled over 1,000,000 passengers and twelve of the world's thirty busiest airports by passenger volume in 2014 were in the U.S. (down from 17 in 2004), including the world's busiest, Hartsfield-Jackson Atlanta International Airport. In 2012 88% of all traffic was through the 62 busiest airports in the country. In terms of cargo, in 2015, eight of the world's thirty busiest airports were in the U.S., including the world's second busiest, Memphis International Airport. Private aircraft are also used for medical emergencies, government agencies, large businesses, and individuals, see general aviation.
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Southwest Airlines Southwest Airlines Co. () is a major U.S. airline and the world's largest low-cost carrier headquartered in Dallas, Texas.
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National Airlines (N8) National Air Cargo, also operating as National Airlines, is an American airline based in Orlando, Florida. It operates on-demand cargo and passenger charter services. It added scheduled passenger service on December 16, 2015, from its hub at Orlando-Sanford International Airport, Orlando.
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List of Airbus A330 operators The Airbus A330 is a wide-body twin-engine jet airliner made by Airbus. Versions of the A330 have a range of 7400 to and can accommodate up to 335 passengers in a two-class layout or carry 70 t of cargo.
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Montreal Convention The Montreal Convention (formally, the Convention for the Unification of Certain Rules for International Carriage by Air) is a multilateral treaty adopted by a diplomatic meeting of ICAO member states in 1999. It amended important provisions of the Warsaw Convention's regime concerning compensation for the victims of air disasters. The Convention attempts to re-establish uniformity and predictability of rules relating to the international carriage of passengers, baggage and cargo. Whilst maintaining the core provisions which have served the international air transport community for several decades (i.e., the Warsaw regime), the new treaty achieves modernization in a number of key areas. It protects passengers by introducing a two-tier liability system that eliminates the previous requirement of proving willful neglect by the air carrier to obtain more than US$75,000 in damages, which should eliminate or reduce protracted litigation.
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Rate of climb In aeronautics, the rate of climb (RoC) is an aircraft's vertical speed – the rate of positive altitude change with respect to time or distance. In most ICAO member countries, even in otherwise metric countries, this is usually expressed in feet per minute (ft/min). Elsewhere, it is commonly expressed in metre per second (m/s). The rate of climb in an aircraft is indicated with a vertical speed indicator (VSI) or instantaneous vertical speed indicator (IVSI).
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Air operator's certificate An air operator's certificate (AOC) is the approval granted by a national aviation authority (NAA) to an aircraft operator to allow it to use aircraft for commercial purposes. This requires the operator to have personnel, assets and system in place to ensure the safety of its employees and the general public. The certificate will list the aircraft types and registrations to be used, for what purpose and in what area - specific airports or geographic region.
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Airport Authority Hong Kong The Airport Authority Hong Kong (abbreviated as AA or AAHK) (, abbreviated as 機管局) is the statutory body (governed by the Airport Authority Ordinance (Cap. 483)) of the government of Hong Kong that is responsible for the operations of the Hong Kong International Airport.
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Seat configurations of Airbus A380 The Airbus A380 has two full-length decks of 49.90 m (163 ft 8 in), though the upper deck has a slightly reduced usable length due to the curvature of the front fuselage and the front staircase. The main deck measures 6.58 m (21 ft 7 in) in width and the upper deck 5.92 m (19 ft 5 in).