1.
Airline codes
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This is a list of airline codes. The table lists IATAs two-character airline designators, ICAOs three-character airline designators, IATA airline designators, sometimes called IATA reservation codes, are two-character codes assigned by the International Air Transport Association to the worlds airlines. The standard is described in IATAs Standard Schedules Information Manual and the codes themselves are described in IATAs Airline Coding Directory, Airline designator codes follow the format xx, i. e. two alphanumeric characters followed by an optional letter. Although the IATA standard provides for three-character airline designators, IATA has not used the third character in any assigned code. This is because some legacy computer systems, especially the central reservations systems, have failed to comply with the standard, the codes issued to date comply with IATA Resolution 762, which provides for only two characters. These codes thus comply with the current airline designator standard, there are three types of designator, unique, numeric/alpha and controlled duplicate. IATA airline designators are used to identify an airline for commercial purposes in reservations, timetables, tickets, tariffs, air waybills, a flight designator is the concatenation of the airline designator, xx, and the numeric flight number, n, plus an optional one-letter operational suffix. Therefore, the format of a flight designator is xxn. After an airline is delisted, IATA can make the code available for reuse after six months, controlled duplicates are issued to regional airlines whose destinations are not likely to overlap, so that the same code is shared by two airlines. The controlled duplicate is denoted here, and in IATA literature, an example of this is the code 6Y, which refers to both Mid Airlines, a charter airline in Sudan, and Med Airways, a charter airline in Lebanon. IATA also issues an accounting or prefix code and this number is used on tickets as the first three characters of the ticket number. The IATA codes originally based on the ICAO designators which were issued in 1947 as two-letter airline identification codes and these codes are unique by airline, unlike the IATA airline designator codes. The designators are listed in ICAO Document 8585, Designators for Aircraft Operating Agencies, ICAO codes have been issued since 1947. The ICAO codes originally based on a two-letter-system and were identical to the codes used by IATA. After an airline joined IATA its existing ICAO-two-letter-code was taken over as IATA code, so in the 1970s the abbreviation BA was the ICAO code and the IATA code of British Airways while non-IATA-airlines like Court Line used their 2-letter-abbreviation as ICAO code only. In the early 1980s ICAO introduced the current three-letter-system due to the number of airlines. It became the new standard system in November 1987. Other designators, particularly starting with Y and Z, are reserved for government organizations
2.
Airline hub
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Airline hubs or hub airports are used by one or more airliners to concentrate passenger traffic and flight operations at a given airport. They serve as points to get passengers to their final destination. It is part of the hub-and-spoke system, an airline operates flights from several non-hub cities to the hub airport, and passengers traveling between spoke cities need to connect through the hub. This paradigm creates economies of scale that allow an airline to serve city-pairs that could not be economically served on a non-stop basis. This system contrasts with the point-to-point model, in there are no hubs. Hub airports also serve origin and destination traffic, the hub-and-spoke system allows an airline to serve fewer routes, so fewer aircraft are needed. The system also increases passenger loads, a flight from a hub to a spoke carries not just passengers originating at the hub, additional employees and facilities are needed to cater to connecting passengers. To serve spoke cities of varying populations and demand, an airline requires several aircraft types, in addition, airlines may experience capacity constraints as they expand at their hub airports. For the passenger, the system offers one-stop air service to a wide array of destinations. However, having to make connections en route to their final destination increases travel time. Additionally, airlines can come to monopolise their hubs, allowing them to increase fares. Airlines may operate banks of flights at their hubs, in several flights arrive. The banks may be known as peaks of activity at the hubs, banking allows for short connection times for passengers. In addition, banking could result in inefficient aircraft utilisation, with aircraft waiting at spoke cities for the next bank, instead, some airlines have debanked their hubs, introducing a rolling hub in which flight arrivals and departures are spread throughout the day. This phenomenon is known as depeaking. While costs may decrease, connection times are longer at a rolling hub, American Airlines was the first to depeak its hubs, trying to improve profitability following the September 11 attacks. It rebanked its hubs in 2015, however, feeling the gain in connecting passengers would outweigh the rise in costs, the hub-and-spoke system is also used by some cargo airlines. FedEx Express established its main hub in Memphis in 1973, prior to the deregulation of the air industry in the United States
3.
Airline alliance
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An airline alliance is an aviation industry arrangement between two or more airlines agreeing to cooperate on a substantial level. Alliances may provide marketing branding to facilitate travelers making inter-airline codeshare connections within countries and this branding may involve unified aircraft liveries of member aircraft. In 2015, Star Alliance was the largest with 23% of total scheduled traffic in RPK, followed by SkyTeam with 20. 4% and Oneworld with 17. 8%, benefits can consist of, An extended network, often realised through codeshare agreements. Many alliances started as only codeshare networks, cost reduction from sharing of, sales offices maintenance facilities operational facilities, e. g. catering or computer systems. Operational staff, e. g. ground handling personnel, at check-in, investments and purchases, e. g. in order to negotiate extra volume discounts. Traveler benefits can include, lower prices due to lowered operational costs for a given route, more departure times to choose from on a given route. Shorter travel times as a result of optimised transfers, a wider range of airport lounges shared with alliance members faster mileage rewards by earning miles for a single account on several different carriers. Round-the-world tickets, enabling travelers to fly over the world for a low price. Airline alliances may also create disadvantages for the traveler, such as, less frequent flights, for instance, if two airlines separately fly three and two times a day respectively on a shared route, their alliance might fly less than 5 times a day on the same route. This might be especially true between hub cities for each airline, E. g. flights between Detroit Metropolitan Wayne County Airport and Amsterdam Airport Schiphol. The ability of an airline to join an alliance may be restricted by laws, competition law issues must also be considered in some countries. The first airline alliance was formed in the 1930s, when Panair do Brasil, the first large alliance began in 1989, when Northwest Airlines and KLM agreed to large-scale codesharing. Normally landing rights are granted for a number of flights per week to a fixed destination. Each adjustment requires negotiations, often between governments rather than between the companies involved, in return, the United States granted antitrust immunity to the alliance between Northwest Airlines and KLM. Other alliances would struggle for years to overcome the barriers and lack of antitrust immunity. The Star Alliance was founded in 1997, which brought competing airlines to form Oneworld in 1999, in 2010 Richard Branson, chairman of the Virgin Group, announced his intention to form a fourth alliance among Virgin branded airlines. Then in September 2011, Branson said that Virgin would join one of the existing alliances, in December 2012, Delta Air Lines purchased Singapore Airlines 49% stake in Virgin Atlantic for £224 million. On February 14,2013, it was announced that American Airlines and US Airways would merge, retaining the American Airlines name, US Airways participation in the Star Alliance lapsed
4.
Star Alliance
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Star Alliance is one of the worlds largest global airline alliances. Founded on 14 May 1997, its current CEO is Mark Schwab and its headquarters is in Frankfurt am Main, as of 7 August 2016, Star Alliance is the second largest global alliance by passenger count with 641.1 million, after SkyTeam and ahead of Oneworld. Its slogan is The Way The Earth Connects, the alliance has a two-tier rewards program, Silver and Gold, with incentives including priority boarding and upgrades. Like other airline alliances, Star Alliance airlines share airport terminals, on 14 May 1997, an agreement was announced forming Star Alliance from five airlines on three continents, Scandinavian Airlines, Thai Airways International, Air Canada, Lufthansa, and United Airlines. The alliance chose Young & Rubicam for advertising, with a budget of $25 million, the airlines shared the star logo from the beginning, with its five points representing the founding airlines. The alliance adopted its first slogan, The Airline Network for Earth, with its goal an alliance that will take passengers to major city on earth. The now defunct Brazilian airline VARIG joined the Star Alliance network on 22 October 1997, also joining were Ansett Australia and Air New Zealand, expanding Star Alliance to Australia and the Pacific. With the addition of the two carriers, the alliance served 720 destinations in 110 countries with a combined fleet of 1,650 aircraft. The next airline to join was All Nippon Airways, the groups second Asian airline, during the early 2000s, a number of airlines joined Star Alliance, the Austrian Airlines Group joined on 26 March 2000 and Singapore Airlines on 1 April. BMI and Mexicana Airlines joined on 1 July, bringing the membership to 13. The addition of BMI made London Heathrow the only European hub with two alliances, during the year, Emirates considered joining Star Alliance, but decided against it. That year the now-defunct BWIA West Indies Airways, which had entered an alliance with United Airlines, considered becoming a member, in 2000, the alliance also opened its first three business centers and announced the formation of an Alliance Management Team, the partnerships executive body. In September 2001, Ansett Australia left Star Alliance due to bankruptcy and that year, Star Alliance announced the appointment of a new CEO, Jaan Albrecht. Asiana Airlines joined the alliance on 1 March 2003, Spanair on 1 May, around this time, Mexicana Airlines left the alliance after deciding not to renew a codeshare agreement with United Airlines, later joining Oneworld. US Airways joined the alliance in May 2004, becoming its second US-based airline, in November Adria Airways, Blue1 and Croatia Airlines joined the alliance as its first three regional members. Although Star Alliance invited Lineas Aereas Azteca in 2005 to join in mid-2007, TAP Portugal joined on 14 March 2005, adding African destinations to the network. In April 2006 Swiss International Air Lines, the alliances sixth European airline, by May 2007, Star Alliances 10th anniversary, its members had a combined 16,000 daily departures to 855 destinations in 155 countries and served 406 million passengers annually. VARIG left the alliance on 31 January 2007, and the two Chinese airlines Air China and Shanghai Airlines joined on 12 December
5.
Avianca
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Avianca S. A. (acronym in Spanish for Aerovías del Continente Americano S. A. It is headquartered in Bogotá, D. C. with its hub at El Dorado International Airport. Avianca also comprises a group of seven Latin American airlines, whose operations are combined to function as one using a code sharing system. Avianca is the largest airline in Colombia and second largest in Latin America, Avianca together with its subsidiaries has the most extensive network of destinations in Latin America. It is wholly owned by Synergy Group S. A. a South American holding company established by Germán Efromovich and it is listed on the Colombia Stock Exchange. Avianca is the second oldest airline after KLM, and celebrated its 90th anniversary in 2009. It is the oldest airline in the Western Hemisphere and it became an official member of Star Alliance on 21 June 2012, after a process that lasted approximately 18 months from the initial announcement of their invitation to join the Alliance. The airline traces its history back to 5 December 1919, in the city of Barranquilla, the company accomplished their first flight between Barranquilla and the nearby town of Puerto Colombia using a Junkers F.13, transporting 57 pieces of mail. The flight was piloted by German Helmuth von Krohn and this and another aircraft of the same type were completely mechanically constructed monoplanes, the engines of which had to be modified to efficiently operate in the climate of the country. There were nine aircraft in the fleet with a range of 850 km which could carry up to four passengers. This new contract allowed SCADTA to thrive in a new frontier of aviation, by the mid-1920s, SCADTA started its first international routes that initially covered destinations in Venezuela and the United States. In 1924, the aircraft that both Ernesto Cortissoz and Helmuth von Krohn were flying crashed into an area known as Bocas de Ceniza in Barranquilla. In the early 1940s, Peter von Bauer sold his shares in the airline to the US-owned Pan American World Airways, five Colombians participated in this, Rafael María Palacio, Jacobo A. In 1946, Avianca began flights to Quito, Lima, Panama City, Miami, New York City and Europe, using Douglas DC-4s, in 1951, Avianca acquired Lockheed 749 Constellations and 1049 Super Constellations. In 1961, Avianca leased two Boeing 707 aircraft, to operate its routes and on 2 November 1961, it acquired its own Boeing 720s. In 1976, Avianca became the first Latin American airline to operate a Boeing 747. Three years later, it started operations with another 747, this time a 747 Combi, mixing cargo, in 1994, Avianca, the regional carrier SAM and the helicopter operator Helicol, merged, beginning Aviancas new system of operations. By 1996, Avianca Postal Services became Deprisa, which provided mail services
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