Question id 370 - Human Performance and Limitations - ATPL - Airline Transport Pilot license

All pilots should master it because the aeronautical world needs one common language.
The composition of every crew should be geared to a command of the official aeronautical language of the destination country.
It is necessary and sufficient to have a command of any of the official languages of the ICAO.
Be familiar with normal procedures in English since only this allows for effective management of any flight's communication.

Training tests and timed exam simulations ATPL - Airline Transport Pilot license