A340 Fuel info
 

Can anyone in the know, please explain the fuel management/opeartion/tank locations/qty etc on the A340.
Thank you in advance

Tanks

Inner Wing 33578 kgs each
Outer Wing 2865 kgs each
Centre Tank 33300 kgs
Trim Tank 4890 kgs

Total 111078 kgs (useable)

Fuel Operation

Fuel is used in the following sequence:

Centre to Inners
Inners down to 4000 kgs
Trim to Inners
Inners down to 3500 kgs
Outers to Inners

CofG Control

Trim Tank transfer system controls aircrafts CofG.

Fuel is transferred to the Trim Tank (Aft) or from the Trim Tank (Fwd) depending on stage of flight.

All controlled automatically by Fuel Control & Monitoring Computer (FCMC).

Just to add to HD's excellent reply, that information is for the 340-300 of course. The -600 has more fuel and a few extra tanks to make things simpler (just ask Virgin).

the 600 has the inner tanks split so you have inner 1,2,3 and 4. The principle otherwise remains the same.
1 Centre to inners
2 each inner to 4000 kg
3 trim to inner
4 each inner down to 3500kg, then
5 outer to inner

The aft cg target is approx 2% ahead of the aft cert limit and it will forward transfer to 0.5% ahead of that until you get to 35 min before arrival (or FL245) and then it goes forward if not already.
:E :E :E :E

Thanks for your replies guys/gals.