Airspeak

It is always, apparently, the UK, US and Australian aircrews who are criticised for going outside the codified bounds of 'airspeak'.

The advantage of a formalized language is rapid communication and the avoidance of ambiguity in applied settings tough, for instance, the use of "affirm" instead of "yes", and one request for "clearance to bypass your class" testifies to the inappropriateness of "Airspeak" as an acceptable mode of social communication!

Even within a single language, terminology and phrasing need to be standardized, to avoid ambiguity, and great efforts have been made to develop such a system for English, widely called 'Airspeak'.