My mother has just asked me about a situation that occured on her flight aboard Canadian North last weekend, it also has me rather puzzled.
It was an F-28, (C-FTAR) from YZF-YEG, and just before they closed the door, the FO came on and said they had wing contamination, and he went to check the wing. 1 1/2 hours later, whatever it was was finally cleaned off, so they closed the door, and went to de-ice and proceed to the runway. Once taxied into position on the active, the FO lowered the airstaris, ran out checked the wings again, and finally took off.
Arriving very late in YEG.
Outside Air Temp. was -42C at the time, if it has any relevance.
So, as I have no idea what this was, I figured someone here might, are there any other cases, incidents etc. of this matter?