IFALPA published a Safety Bulletin concerning Winter Conditions at Northern Finland Airports
Safe winter operations normally require special procedures by airline maintenance, engineering, ground crew, and de-icing personnel. In Finland, FINAVIA and TRAFICOM publish an annual Safety Bulletin on winter conditions. The attached bulletin focuses on operations in northern Finland but the content is relevant to other locations subject to similar weather. It provides excellent guidance for both flight crews and operators.
We encourage you to take note of this important Safety Bulletin if you operate in oceanic airspace.