Originally Posted by
Mad (Flt) Scientist
But it is odd that we seem to be getting more "issues" with novel forms of icing in the relatively recent past. At least some people are suggesting that the only logical explanation is that it's a change in the atmosphere of some kind - global warming? pollution? aircraft flying in different parts of the atmosphere more often (either vertically or geographically)
It may also be that the operating norm has changed a bit: folks are more willing to risk / fly into such weather due to the much better kit that is currently available.