Pilots and Air Traffic Controllers Phraseology Study
Language is a key factor in the efficiency of Pilot - Air Traffic Control (ATC) communications, particularly for safety reasons. The use of standardized phraseology allows to overcome differences in language while reducing misunderstanding. Ambiguous or non-standard phraseology is a frequent causal or contributory factor in aircraft accidents and incidents.
This Phraseology Report is the result of a survey carried out by IATA, the International Federation of Air Line Pilots' Associations (IFALPA) and the International Federation of Air Traffic Controllers’ Associations (IFATCA), focusing on the non-use of ICAO standard phraseology.
The survey was an initial evaluation of the safety risks associated with air-ground communications. It compiles input from 2070 pilots and 568 air traffic controllers.
Main factors leading to misunderstanding and misinterpretation:
- Use of general aviation English in lieu of standard phraseology
- Rate of speech delivery
- Lack of Harmonization
Download full phraseology report (pdf)