Scifi, if he cant work that out from the info I gave then he does not deserve to pass!
Fuji, rain ice is a form of clear ice but not the only form of clear ice which can also form from suspended water drops as well as rain. The other thing with rain ice is that you can get it when flying in air that is above zero in the warm sector when flying below a cold front overhang, the rain comes out of the air in the cold sector above you below freezing temp and hits the aircraft that is flying in air that is maybe 1 or 2 degrees above freezing, if you have just descended into the warm sector from above the freezing level the airframe will still be below zero and you can have a real problem! There are some great images of rain ice on Google, most of these are on the ground where the aircraft (and any other structure) is sitting below zero and the surface is below freezing.
Last edited by foxmoth; 25th Aug 2016 at 09:47.