Research in the field of miscommunication in aviation discourse tends to focus on causes of miscommunication. Especially, language proficiency, and phraseology use have been the focus of studies....Show moreResearch in the field of miscommunication in aviation discourse tends to focus on causes of miscommunication. Especially, language proficiency, and phraseology use have been the focus of studies. However, the relationship between these factors of miscommunication is something little is known about. This study, therefore, aimed to determine whether or not language proficiency of a speaker influences their patterns of phraseology use. 150 minutes of communications between air traffic controllers who were native speakers of English, and pilots that were either native or non-native speakers of English were collected, transcribed and coded. Results suggested that language proficiency influences patterns of non-standard phraseology use as well as the frequency of the use of accommodation strategies. It is suggested that the influence of language proficiency on patterns of phraseology use in aviation discourse be researched further so that communications between controller and pilot can be less problematic, and air travel can become safer.Show less