Radio communication between pilots and controllers features standard phraseology in the first instance and plain English when phraseology does not suffice. The two go together, hand-in-hand: safe and efficient radiotelephony relies on both. In this blog, we explain why it is so important for ICAO English tests to directly address radiotelephony communication, and we explore some of the reasons why radiotelephony is conspicuously absent in much aviation language testing today.