@SoNy Sorry, I have no idea. Again, I found the SB profile off flightsim.to, got it connected into my SB, so when I go and pick the A35K, and it asks for the profile, there is like DEFAULT, and a couple INIBUILDS ones, then the one from FS.TO -- A350-SUN or whatever. I choose that profile and went on flying. I didn't really dive any deeper into it. I think I flew like Chicago to YMML. But looking closer at the SB stuff, it looks like on that particular flight, it was 8459 NM, but it didn't take on the full 155,000 litres, more like 142,664. Sorry, not an expert on all the technical stuff that goes into flying and planning all these things.