Fuel weight?

[Checks]

I know Jet A weighs 6.7 lbs per gallon at 15 C & 29.92.

I know there is a difference when the weather is cold(0 C) or really hot(35 C) but does anybody know how much of a difference?

Just curious.

Thank You

 

[Thedude]

Yes, there is a difference. I dont have the chart in front of me for specific gravity but it does add up when you are uplifting 50,000 lbs + and you are only allowed a 5% margin of error. Cause those fuel load compensators on large A/C are not that accurate.

 

[DitchDriver]

From ATP written (1900 operating / performance data):

Jet A
40C 6.65 lb/gal
15C 6.8
-40C 7.15


Av Gas 100/130
40C 5.55 lb/gal
15C 5.8
-40C 6.3


If 0C is cold and 35C is really hot, you must be spolied rotten.