The minimum requirements for the words were to have similar spelling in English, French and Spanish and to be live words in each of these languages. The ICAO adopted its phonetic alphabet as a universal standard for communicating English letters over a phone or radio. This continues to be in existence for the last 70 years. The International Civil Aviation Organization (ICAO) - UN’s specialised agency for civil aviation - adopted the international radiotelephony spelling alphabet to ease communication via telephone or radio and avoid misunderstandings when parts of a message containing letters and numbers are spelled out. The pilot’s response will be “on November, crossing runway One Eight, Alpha, Bravo Charlie.’ UN agency Interestingly, India is the only country, and Lima and Quebec are the only two cities in the list.Ī typical instruction from the air traffic control (ATC) to the pilot steering an aircraft on a runway will be something like this: Alpha Bravo Charlie on Taxiway November cross Runway One Eight. The phonetic alphabet has 26 words for the 26 letters of the English alphabet: Alpha, Bravo, Charlie, Delta, Echo, Foxtrot, Golf, Hotel, India, Juliett, Kilo, Lima, Mike, November, Oscar, Papa, Quebec, Romeo, Sierra, Tango, Uniform, Victor, Whiskey, X-ray, Yankee, Zulu. Introduced on November 1, 1951, the International Radiotelephony Spelling Alphabet popularly called NATO spelling alphabet continues to unify the global aviation industry. the phonetic alphabet that ensures error-free communication has turned 70 this month. Nevertheless, a NATO unclassified version of the document is provided to foreign, even hostile, militaries, even though they are not allowed to make it publicly available.Alpha, Bravo, Charlie, Delta. However, ATP-1 is marked NATO Confidential (or the lower NATO Restricted) so it is not publicly available. The name NATO phonetic alphabet became widespread because the signals used to facilitate the naval communications and tactics of the United States and NATO have become global. Because the latter allows messages to be spelled via flags or Morse code, it naturally called the code words used to spell out messages by voice its “phonetic alphabet”. The alphabet’s common name (NATO phonetic alphabet) arose because it appears in Allied Tactical Publication ATP-1, Volume II: Allied Maritime Signal and Maneuvering Book used by all allied navies in NATO, which adopted a modified form of the International Code of Signals. NATO uses the normal English numeric words (Zero, One, with some alternative pronunciations), whereas the IMO uses compound numeric words (Nadazero, Unaone). The same alphabetic code words are used by all agencies, but each agency chooses one of two different sets of numeric code words. ![]() ![]() It is a subset of the much older International Code of Signals (INTERCO), which originally included visual signals by flags or flashing light, sound signals by whistle, siren, foghorn, or bell, as well as one, two, or three letter codes for many phrases. ![]() It is used by many national and international organizations, including the International Civil Aviation Organization (ICAO), the International Telecommunication Union (ITU), the International Maritime Organization (IMO), the North Atlantic Treaty Organisation (NATO), the Federal Aviation Administration (FAA), and the American National Standards Institute (ANSI). The paramount reason is to ensure intelligibility of voice signals over radio links. Instead, the NATO alphabet assigns code words to the letters of the English alphabet acrophonically so that critical combinations of letters (and numbers) can be pronounced and understood by those who transmit and receive voice messages by radio or telephone regardless of their native language, especially when the safety of navigation or persons is essential. Though often called “phonetic alphabets”, spelling alphabets have no connection to phonetic transcription systems like the International Phonetic Alphabet. The NATO phonetic alphabet, more formally the international radiotelephony spelling alphabet, is the most widely used spelling alphabet.
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