A highly desirable, due to the fact that it is an attempt to improve safety in aviation in the long run.
B partially reliable, since the performance of foreign language instructors will not be evaluated.
C irrelevant, because it does not seem to take into account the diversity in native languages and cultures across the member states.
D contradictory, because, while it intends to evaluate Aviation English on a global basis, only a few countries are willing to take part in the accreditation process.
E welcome, since there is concrete evidence to prove that air professionals will be prepared to speak fluent English according to any university business standard.