In the winter of 78/79 we were operating a Dollar Bell 47 in the north.
We went to fly around 10am and for some reason I climbed onto the centre frame for a good look around.
Our blades were painted one black and one white to give that moving finger effect.
I was shocked to see that one blade had water on it while the other was covered in a thick layer of ice.
Took me over an hour to clear the blade. Fortunately the 47's tailboom makes a good stand and I weighed considerably less in those days.
Would have been interesting on start up.