You keep posting so much BS and try to be smart. Cptplaystation has been here posting valid comments for a while. Your participation in the contrary consists of BS written in poor english, almost beyond understanding. Is that supposed to be level 4 english?
You keep talking this utter toss about taking off with snow is ok, as long as it is blown away before rotation. According to you this will have no affect on safety. Dude, this is absolute Bull$hit!
It is clearly a NO-GO to operate an A/C with any contamination on the wing. There is no discussion about that. But because you are such a smarta$$ try to figure out this.
Assume we have a balanced T/O calculation with stopmargin 0. Lets pretend that because we have snow on the wing there is also some snow on the rwy too. Let it be 1mm dry snow, or 1mm wet snow or even just 3mm standing water.
How do you think the increased drag until Vr + the increased weight ( assuming that the snow is blown off just before Vr) does affect your :
1. screenheight for TO with all engines on?
2. screenheight for TO with one engine inop?
Your screenheight on contaminated RWY with one engine inop it will be only 15ft! Thats less 5 meters! Lets assume you do know that you have snow on your wing, its all blown off as you thought, but you lose and engine. Because the snow on the wing smart guys delay the rotation a bit.
Even if your performance was not even affected by the snow you just will have a lot less than 15ft screenheight left
A lot less of almost nothing is 0
Here is some lecture for you, its from smartcockpit. But smarta$$es can read it too.
http://www.smartcockpit.com/data/pdf...ERY_RUNWAY.pdf
Winter operations is a wide field and needs a lot of experience and a lot of knowledge. Winter operations require us to act even a little more safetyminded, operate a little more on the safe side and not to cut corners when it comes to safetymargins. Winter operation will reduces the safetymargins in all areas of our operations allready, so we have to take them back not give them away! For just an example stopmargins are suddenly only 15% and the reversers are allready calculated into the stopping distance.
A solid knowledge of the rules and regulations and a strict adherence to them is the key element to avoid accidents. Trying to be an smarta$$ and cut corners will lead to an accident. If not while you operate the flight, maybe it will be another pilot who took the lesson from you and thought it was cool. People who think and talk like you, plant the seeds of accidents and we all will harvest the crop. Think about that, shut up, listen to your more experienced colleagues and improve your knowledge.