ICAO Language Requirements
Understanding the ICAO Language Proficiency Requirements
Understanding the ICAO Language Proficiency Requirements is the first step in researching the role of language as a human factor in aviation.
It is essential that human factors experts, accident investigators, and researchers read ICAO Document 9835. (Edition 1).
An updated Edition 2 that includes ICAO Test Criteria is available from www.ICAO.int.
Additional information is found at the following sites: