Really, the point is not D&D who need practice.
I am sure they are very nice people, happy to help and extremely useful in an emergency.
But once again, does your 4 year old son practice calling 112?
If your 4 year old son does not need to practice calling 112, would it not be enough for a mature person (a pilot), just to know that when sh!t hits the fan, there is a lot of help available worldwide, on 121.5.
All they have to say is: HEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEELP!! (long enough for a fix)
PS. For every chat on 121.5, there are 20 practice pans. (figures derived using D&D logic
)