ICAO says class F is for temporary use. 50 years temporary ?
And as I have said before ICAO class F is non radio for VFR. And all of our class F proponents are totally obsessed with mandatory radio requirements for VFR otherwise we are all going to die!
So our mandatory radio class G areas are clearly not F. !
In fact ICAO did not allocate an airspace classification for our pre 1991 class G.
That's why I why I got involved in the change. And it's more likely going to happen as the old troglodytes die out.