This course covers the standards and procedures for effective communications in aviation, as laid down in Annexe 10 Volume 2 to the Chicago Convention. The use of non-standard procedures and phraseology can cause misunderstanding, leading to incidents and accidents. Standard words, phrases and definitions are employed to ensure there is no ambiguity or misunderstanding between pilot and air traffic control.

The course covers the categories of messages handled by air traffic services in order of priority: Distress, Urgency, Flight Safety, Relevant Weather Information and Flight Regularity.