Soviet regulations with GREAT experience of fligts in "dry snow" conditions were transferred to Russian regulations.
Dry snow on upper wing surface is OK for take-off, but captain Must be sure there is no ice.
If previos approach was conducted out of icing coditions, OAT is well below 0C, re-fuelled fuel temp was below 0C there was NO chance to get ice on the wing.
My best regards to Sabenaboy.
Regardless:
Snowbank take-off is MAD
Today I' ve spoken with tech-cheif. He considers this take-off mad too. So did the guy from Labour Union Commitee.
I hope IT will leave my company.