Yu savvy long pidgin?
I know of one operator required to do a very expensive "proving flight" for the issue of an international AOC, all up costs around fifty grand.
I heard one of the NCN's issued was the CP should have travelled to the destination prior to the "proving flight" to lecture the countries ATC on proper "Singlish". That or run a course for aircrew on "Understanding Singlish".
Sometimes you really have to wonder......?