Jean Paul Vinay (Professor of Linguistics at the Montreal University) studied closely with ICAO during 1948 – 1949 to search and develop the spelling of the alphabet. IATA presented this draft alphabet to ICAO (International Civil Aviation Authority) in 1947. They studied on a draft alphabet consisting common sounds from both English, French, Spanish and Portuguese. IATA (International Air Transportation Association) recognized the need of a universal alphabet. There was also a “ANA BRAZIL” alphabet in Latin America at the same time because many sounds were unique to English in ABLE BAKER alphabet.
A final NDRC list was assembled and recommended to the CCB.Īfter World War II many aviation staff (pilots, ground personnel) were using ABLE BAKER alphabet and this alphabet was officially used for international aviation. Other words were tested and the most intelligible ones were compared with the more desirable lists. In a few instances where none of the 250 words could be regarded as especially satisfactory, it was believed possible to discover suitable replacements. But that most of the deficiencies could be remedied by the judicious selection of words from the commercial codes and those tested by the laboratory. The results showed that many of the words in the military lists had a low level of intelligibility. Hand (Director of Communications in The Army Air Force and member of committee on CCB) with the help o f Harvard University’s Psycho-Acoustic Laboratory made a report after his research. United Kingdom, United States and Australia developed “ Combined Communications Board (CCB)” in 1943 to enable the communication during joint operations of each other.ĭuring World War II, U.S conducted significant research and development. It was similar to the phonetic alphabet used by Royal Navy during World War I. Other British forces used another similar alphabet named RAF radio alphabet. United Kingdom’s Royal Air Force adopted another one similar to ABLE BAKER during the war as well. In this alphabet the letter A was for ABLE and B was for BAKER and the alphabet was known as “ABLE BAKER”. The aim was to standardize systems among all branches of its armed forces. For example United States adopted the Army and Navy radiotelephony alphabet during 1941.
Aviation Alphabet Let’s look to the brief historyĭuring World War II many nations used their own spelling alphabets.
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