They aren’t inherently dangerous but should be inspected for cracks. After 70+ years cracks are a potential problem. I have a two blade fan that was on my 216 when I got it. A previous owner converted it from a 3-blade fan. But I found a good 4- blade fan for it.


Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.