Aviation English

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 (Vol I, 5.2.1.1.2) 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.

Aviation English is a type of English for specific purposes, with several specific idiosyncratic structures: for example, any correction of a misspoken word must always be conveyed using the word "correction".