Aviation English: Expedite Level 4

Expedite Level 4 is designed to provide you with the skills need to reach ICAO 4 and 5 English proficiency.  It is intended to provide English language instruction in an aviation context.
With 14 chapters of quizzes, listening exercises, vocabulary, and fluency building activities in non-routine situations in aviation, Expedite Level 4 helps you develop the skills you’ll need when you take your next test of ICAO English proficiency.