using a trial version of SD (maybe this is the issue??) - and I would like to change the fuel units from litres to US gallons and the weights from KG to Ibs

I go to set up > change units > weight / fuel volume update the units, but when i go back into "flight details" tab for weight and balance and fuel and costings nothings changed ? 

any help much appreciated - IPad mini retina. I've tried rebooting, creating new route but the units stay the same ?

Hi

Setup > Aircraft and either edit or create a new aircraft. All the fuel units related to that aircraft are set there.

Setup > Change Units changes the default units - it won't change ones already defined in an aircraft.

nice one cheers - didnt realise it was all controlled by the aircraft profiles