Originally Posted by
Ejector
To change 1800lbs of Jet A1 to kg you divide by 2.2
To change to L what do you divide by?
G'day Ejector

,
There is
NO standard conversion factor between Litres and Kilograms for Jet A1. It all depends on the specific gravity (SG) for the day.
With my first employer, we had fuelling charts written in steps of 0.005Kg/L for S.G's from 0.760 - 0.840 Kg/L. In reality, the range is usually between 0.780 - 0.810 Kg/L, and we are supplied with (on a daily basis) and expected to use an S.G. that is accurate to 0.001 Kg/L.
A
ROUGH rule of thumb to see if you are in the ballpark is to use an S.G of 0.800 Kg/L, but this may carry an error of up to 5% in cases where the actual S.G. is nearer the extremes of 0.760 or 0.840 Kg/L.
Regards, JetMech