Morning All,
As usual blame the fuellers.......
The S.G is most commonly the problem, we will always give a pilot or engineer the S.G if asked ( which is rare!) but even when we do and the sums don't quite look right, they normally walk off muttering I'll change it for a better one.
If you calculate your uplift in litres to compare whats been delivered, why not give Us fuellers the fuel figure in litres then, then there would be no discrepancy, but no we have to work with pilots who give us figures like,
" Can I have a GOOD 14T"

what sort of figure is that !!!!!!
or
" A generous 25 Thanks"
so we are left to decide what you think these figures are, not very good is it?
On the litres thing AF and KM both used to give their fuel figures in Litres when flying 737's, and on the odd time the S.G would mean even their maths was wrong.
And lastly our meters are calibrated twice a year to prevent this kind of problem.
Fuel Boy