httpv://www.youtube.com/watch?v=vsquDYkfOI4&feature=player_embedded

FS Cabin crew tool was launched with a single English voice set, and the other sets were said to be available at a later date.

Here’s the first one, installing a German crew. You can either purchase FS Cabin crew German Edition (standalone if you don’t want the English voices), or you can add the German set as an expansion pack to the previously released English Edition.