Information about Aviation English language proficiency (AELP) Learn about AELP and how it assesses your verbal proficiency in English and aviation terminology. General English language proficiency (GELP) Learn about how GELP assesses your everyday use of English for people who are starting their flying training. Also see CASA EX66/21 Flight Crew Licensing (miscellaneous exemptions) Read more about the exemptions in place for English language proficiency assessments. Pilots Find out how to become a pilot, different licences and permissions, and what you need to do to stay current.