FZFG is encountered at MUC, my homebase, often during the wintermonths. It can be handled easily. You get deiced right before takeoff, and after the 40 sec to Vr, you spend maybe antoher 20-30s until you pop out of the low stratus into sunshine with unlimited view into the Alps - a beautiful day to go skiing were I not sitting there with a jet strapped onto my back...
But FZRA, now that is a totally different matter. I have read the SLD discussion years ago, as it was published by the safety department of our company. I do believe you are operating outside the certification limits - and I have made it my personal limit on how far I am willing to go, how much risk I will take, to hell with all regulations.
I won't even let my wife drive to the supermarket in case of FZRA!
Nic
edit: I don'T know the scientific explanation, just the results...
FZFG is what causes rime on trees, looking oh so pretty once the fog clears out and the sun shines - on aircraft it causes rime ice, slowly.
FZRA leaves a blanket of clear ice on anything it touches - wings, rwys, streets, sidewalks - see the picture above - I would call that heavy ice...
edited to say: In FZFG fanblade icing can be a problem, watch out and do run ups as required...
Last edited by Admiral346; 2nd February 2009 at 21:15.