Air traffic control (ATC) is a service provided by ground-based air traffic controllers (people) who direct aircraft on the ground and through a given section of controlled airspace, and can provide advisory services to aircraft in non-controlled airspace. The primary purpose of ATC worldwide is to prevent collisions, organise and expedite the flow of traffic in the air, and provide information and other support for pilots.
Air traffic control specialists, abbreviated ATCs, are personnel responsible for the safe, orderly, and expeditious flow of air traffic in the global air traffic control system. Usually stationed in air traffic control centers and control towers on the ground, they monitor the position, speed, and altitude of aircraft in their assigned airspace visually and by radar, and give directions to the pilots by radio. The position of air traffic controller is one that requires highly specialized knowledge, skills, and abilities. Controllers apply separation rules to keep aircraft at a safe distance from each other and within proper airspace in their area of responsibility and move all aircraft safely and efficiently through their assigned sector of airspace, as well as on the ground. Because controllers have an incredibly large responsibility while on duty and make countless real-time decisions on a daily basis, the ATC profession is consistently regarded around the world as one of the most mentally challenging careers, and can be notoriously stressful depending on many variables. Many controllers, however, cite high salaries, and a large, unique, and privileged degree of autonomy as major advantages of their jobs.
A traffic alert and collision avoidance system, is an aircraft collision avoidance system designed to reduce the incidence of mid-air collision (MAC) between aircraft. It monitors the airspace around an aircraft for other aircraft equipped with a corresponding active transponder, independent of air traffic control, and warns pilots of the presence of other transponder-equipped aircraft which may present a threat of MAC. It is a type of airborne collision avoidance system mandated by the International Civil Aviation Organization to be fitted to all aircraft with a maximum take-off mass (MTOM) of over 5,700 kg (12,600 lb) or authorized to carry more than 19 passengers. CFR 14, Ch I, part 135 requires that TCAS I be installed for aircraft with 10-30 passengers and TCAS II for aircraft with more than 30 passengers. ACAS/TCAS is based on secondary surveillance radar (SSR) transponder signals, but operates independently of ground-based equipment to provide advice to the pilot on potentially conflicting aircraft.
The European Organisation for the Safety of Air Navigation, commonly known as Eurocontrol, is an international organisation working to achieve safe and seamless air traffic management across Europe. Founded in 1963, Eurocontrol currently has 41 member states with headquarters in Brussels, Belgium. It has several local sites as well, including an Innovation Hub in Brétigny-sur-Orge, France, the Aviation Learning Centre (ALC) in Luxembourg, and the Maastricht Upper Area Control Centre (MUAC) in Maastricht, the Netherlands. The organisation employs approximately two thousand people, and operates with an annual budget in excess of half a billion Euro.
An airborne collision avoidance system operates independently of ground-based equipment and air traffic control in warning pilots of the presence of other aircraft that may present a threat of collision. If the risk of collision is imminent, the system recommends a maneuver that will reduce the risk of collision. ACAS standards and recommended practices are mainly defined in annex 10, volume IV, of the Convention on International Civil Aviation. Much of the technology being applied to both military and general aviation today has been undergoing development by NASA and other partners since the 1980s.
Aeronautical Message Handling System (AMHS) or Air Traffic Services Message Handling System (ATSMHS) is a standard for aeronautical ground-ground communications based on X.400 profiles. It has been defined by the ICAO.
The Future Air Navigation System (FANS) is an avionics system which provides direct data link communication between the pilot and the air traffic controller. The communications include air traffic control clearances, pilot requests and position reporting. In the FANS-B equipped Airbus A320 family aircraft, an Air Traffic Services Unit (ATSU) and a VHF Data Link radio (VDR3) in the avionics rack and two data link control and display units (DCDUs) in the cockpit enable the flight crew to read and answer the controller–pilot data link communications (CPDLC) messages received from the ground.
Controller–pilot data link communications (CPDLC), also referred to as controller pilot data link (CPDL), is a method by which air traffic controllers can communicate with pilots over a datalink system.
The First European Air Traffic Controller Selection Test (FEAST) is a tool that helps Air Navigation Service Providers (ANSPs) identify the most suitable candidates for the job of air traffic controllers. FEAST was designed by and made available by (EUROCONTROL), the European Organisation for the Safety of Air Navigation. It is used by 44 organisations, including civil and military European Air Navigation Service Providers and certified ATC aviation training academies and universities.
The Aeronautical Information Service, or AIS is a service established in support of international civil aviation, whose objective is to ensure the flow of information necessary for the safety, regularity, and efficiency of international air navigation.
The English Language Proficiency Test (ELPT) was the name of a SAT II last administered in January 2005. It was a one-hour multiple choice test given on English language proficiency by The College Board. A student whose native language was not English could have chosen to take this test instead of or in addition to Test of English as a Foreign Language (TOEFL) for college entrance depending upon requirements of the schools in which the student was planning to apply. Until 1994, the SAT II's were known as Achievement Tests. The ELPT assessed both the understanding of spoken and written standard American English and the ability to function in a classroom where English is spoken. The test was intended for students whose best language was not English; who attend U.S. high schools, or who had studied in an international school where courses were taught in English; had completed two to four years of English language instruction in an English as a Second Language program or in English enrichment courses; or students who spoke a language other than English at home or work. It was scored on a scale of 901 to 999
Language assessment or language testing is a field of study under the umbrella of applied linguistics. Its main focus is the assessment of first, second or other language in the school, college, or university context; assessment of language use in the workplace; and assessment of language in the immigration, citizenship, and asylum contexts. The assessment may include listening, speaking, reading, writing, an integration of two or more of these skills, or other constructs of language ability. Equal weight may be placed on knowledge and proficiency, or greater weight may be given to one aspect or the other.
The VHF Data Link or VHF Digital Link (VDL) is a means of sending information between aircraft and ground stations. Aeronautical VHF data links use the band 117.975–137 MHz assigned by the International Telecommunication Union to Aeronautical mobile (R) service. There are ARINC standards for ACARS on VHF and other data links installed on approximately 14,000 aircraft and a range of ICAO standards defined by the Aeronautical Mobile Communications Panel (AMCP) in the 1990s. Mode 2 is the only VDL mode being implemented operationally to support Controller Pilot Data Link Communications (CPDLC).
Aviation communication refers to the conversing of two or more aircraft. Aircraft are constructed in such a way that make it very difficult to see beyond what is directly in front of them. As safety is a primary focus in aviation, communication methods such as wireless radio are an effective way for aircraft to communicate with the necessary personnel. Aviation is an international industry and as a result involves multiple languages. The International Civil Aviation Organization (ICAO) deemed English the official language of aviation. The industry considers that some pilots may not be fluent English speakers and as a result pilots are obligated to participate in an English proficiency test.
CIMACT is EUROCONTROL's Civil-Military Air Traffic Management Co-ordination Tool.
The Test of English for Aviation (T.E.A.) is a language proficiency test designed and developed by Mayflower College in the United Kingdom.
TOEFA is the acronym for the Test of English for Aviation, that was the first worldwide examination presented by its author William Aranda, PhD, from Peru, at the International Aviation Language Symposium (IALS) organized by the International Civil Aviation Organization ICAO) in Montreal, Canada, in September 2004. It was validated with air traffic controllers from Nicaragua, Panama, Bolivia and Peru and with pilots of Peru and Greece.
Aviation English is the de facto international language of civil aviation. With the expansion of air travel in the 20th century, there were safety concerns about the ability of pilots and air traffic controllers to communicate. In 1951, the International Civil Aviation Organization (ICAO) recommended in "ICAO Annex 10 ICAO to the International Chicago Convention" that English be universally used for "international aeronautical radiotelephony communications." Despite being a recommendation only, ICAO aviation English was widely accepted.
The international ECL examination system provides a standardised test-system customised to the languages of the EU member states and the EU candidate countries. The test-system is based on the recommendations of the Common European Framework of Reference (CEFR) and is operated by the European Consortium for the Certificate of Attainment in Modern Languages (ECL). The ECL is an association of institutions representing European languages.
Estonian Air Navigation Services, abbreviated as EANS, is a modern, rapidly developing company operating under the auspices of the Ministry of Economic Affairs and Communications of the Republic of Estonia. It is a business entity, the major function of which is to provide services to air traffic in accordance with international standards as well as to ensure flight safety in Tallinn Flight Information Region. The sole owner of the company shares is the Republic of Estonia.
