We dont have a cost index. I wish we did. Is it typical in Biz aviation? My guess is no. But still, flying as efficiently as possible should really be a priority.. There is no gain for that fuel burn. Thats my big problem with it.. He does regulary bust 250 below 10000 but who the heck has ever called someone on that? I have never seen it, and I have many hours with this fella.. I may add he has started this practice of slow climbing.. It was not his way before..