Cessna Citation CJ3?

Question

How many gallons does it hold?

Answer 1

Fair question and good answers, but if you're going to fly jets, think pounds, except when you give your fuel order to the fuelers.

Answer 2

706, 700 useable.

Answer 3

This is provided by the Cessna website:

"Maximum fuel weight @ 6.7 lbs/gal: 4,710 lbs (2,136 kg)"

4710/6.7=702.98.  So 702.98 gallons.

And then on the AOPA web site I found "Fuel capacity 706 gal (4,710 lb)", which is about the same as my calculation above, so that should be your final answer!

As for me, I'm not too knowledgeable about modern aircraft, but I am fairly familiar with WW2-era military aircraft, which shares a lot of the same characteristics as modern aircraft.  For one, WW2-era military aircraft consumes fuel, too :)