An aircraft comprising a plurality of fuel tanks in each wing is arranged
such that each fuel tank is provided with a venting pipe connected to a
single venting chamber. The venting chamber is itself located in a
central fuel tank located in the wing centre-box and is thus located
inwardly of at least two of the fuel tanks. The venting chamber has two
venting pipes each being connected via a respective surge tank in each
wing to the exterior of the aircraft.