elcol - I have not perused the entire pdf you linked, but I cannot see any distinction between the Classic and the NG deriving from it. I have obviously missed something, so could IC or you perhaps amplify what he thinks? The change from Vmcg to V1mcg has been incorporated in the Classic QRP as far as I can see, and still no mention of NOT adjusting V1 upwards for contam. It is more than possible that company OMs still refer to 'Vmcg' for Boeings, and of course this particular specific figure can no longer be found in the QRP.