Airbus defines icing conditions as "visible moisture".... less than OAT +10 until TAT -40.... blah blah blah..
here it is
"Icing conditions may be expected when the OAT (on ground and for takeoff), or when the TAT (in flight) is at or below 10 °C, and there is visible moisture in the air (such as clouds, fog with low visibility of one mile or less, rain, snow, sleet, ice crystals) or standing water, slush, ice or snow is present on the taxiways or runways.
Last edited by Bula; 12th August 2012 at 07:51.