aircrew obviously don't as we need accurate figures for performance,
But what do you do with the SG figures?
I have refuelled loads of aircraft for long flights, Tristar B747 B777 B787 A330 and I always use the actual SG to calculate the fuel uplift.
But the crew have Never asked me for the SG, or sent it anywhere.
I present the fuel log 10 mins before departure. (B747 with 130 tons ramp fuel on 80min transit) They check it, but I have never seen anyone do anything with the SG.
So where do you put the SG figures to calculate performance? I thought everything was in KG. Once you have agreed that the fuel on board is correct, what use is the SG figure.
The aircraft sense the SG themselves and use it to calculate the fuel distribution, but no one tells them.
I am not having a go, I really am interested as it is something I have never noticed.