So Rolling thunder, you would discount taking off with any snow/ice whatsoever regardless of what the manufacturers and company manuals said? Would you wish to see it measured first and see the manuals for yourself (in the meantime when proven its fine your crew are out of hours/the aircraft whilst waiting for you to be taught something that doesnt involve you has now picked up so much contaminant it really does need deicing and is now at the back of along queue and a large slot is received as a result) What amount would you allow? Would it depend on the nationality of the crew? What if in moderate snow on taxi out the aircraft picked up a slight amount?
If you aint happy trusting us professionals to do our job best you dont fly at all. Do you also comment on landings?