DK, the 'RFM' doesn't take into account every possible scenario, including inadvertant conditions. Ice in any form is a pain in the a**! It can have catastrophic results when encountered, in a very short period of time. If there are known Iceing conditions, at a profile route you wish to fly.......don't, unless you have the equipment. However, when the temp is +4 degrees, visable moisture present.......no reported iceing......it is still possible to pick up. Worse than ice is freezing rain that is rarely forecasted, but can still materialize at your flight level. The RFM is not specific about it. Just good old commom sense by the pilot!
Don't mind the term 'Weenies'......just getting a rise from you!
Nothing personal..........Have a Happy Xmas!
