Test designed for student controllers satisfies requirement for English language proficiency
Aufsatz (Zeitschrift)
Language Proficiency - Motivating controllers to 'learn' English
Online Contents | 2008
|Language Proficiency 2 - Aviation English
Online Contents | 2006
|Emerald Group Publishing | 2000
English language proficiency (ELP) licence endorsements
Emerald Group Publishing | 2008