If visually nothing is 'adhering' to the aircraft(ie 2c and -snow)and after tactil check then no deicing/anti icing.
Keep your distance from other aircraft to avoid blow off as described above.(50 meters are usually standard).
If precip increasing and temp dropping during taxi,ask a crew to have a look from the cabin.
FCOM SUPP Procedure cold weather is a good start...
Cold soak information in your FCOM is NOT a guarantee that your Airline is approved by your state authority to allow for such contamination.
Your airline must advise crew if cold soak or clean wing concept is to be followed.
Last edited by de facto; 11th Feb 2013 at 05:09.