You have got the wrong end of the stick, but perhaps I shouldn't have mentioned exams.
From the earliest flying in SEPs, pilots learn (or should learn) that carburettor icing can occur in air temperatures above zero degrees.
Does the SEP phase of ATPL training no longer occur, or are they all fuel injected engines these days? Does it not worry you that someone who might be a qualified line pilot (and this is all conditional - we don't know if he actually is), does not know that icing can and does occur from +10 degrees TAT and below? If so, what did his ground school and line training consist of? I would like to be assured that Korean pilots do understand icing, because my brother will be flying with them later this year.
If the OP is an interested non pilot or wannabe asking a question, then fine, but he says 'we' which implied otherwise to me.
I am happy to be proved wrong.