Sorry if this is going over old ground. I was departing this evening and asked the stewardess quietly if we would be de-icing due to a large area of the upper wing being coated in frost. She looked at it and in fairness went and advised the captain and then came back to advise me that it was only frost from refuelling. I know this is the cold soak frost but you do hear lots of reports claiming that the wing should be clean no matter what. I was also mindful of the incident with the SAS aircraft in which ice from the cold soak broke off and damaged both of the tail engines. Is the EMB145 ok in this instance, should I have stayed quiet? I took a photo just before taxiing
