Howdy 

I was thinking the other day, when it comes to aircraft, what tonnage is used? I understand that the British Lon ton is usually used for liquid weights, for things such as fuel, however, is the Lon ton also used for the dead-weight of the aircraft? Or is the US short ton used? In which case, is the fuel weight then given in short tonnage as well? Or are they 2 separate calculations (this I doubt, but is is possible). Or, in a completely new twist, is the metric 'Tonne' used?

I hope that I was clear enough 

Thanks!
Alex

Yet another reason why we should all use metric...

Come on people! Converting 1m to mm (x1000), cm (x100) or km (/1000) is a hell of a lot easier than converting 1 ft to inches (x12), yards (/3), or miles (/5280).