the pins or bolts 31 connecting the forward end of the struts 30 to the aft tank support ring 32 and then tow away the tank on the dolly the separation of the fuselage would not be necessary very often perhaps just a couple of times during the life of the aircraft in addition this separation feature or capability facilitates the assembling of the airplane since the entire tank including all of the plumbing could be installed pressurized and pressure tested without the forebody 10a being attached and without any further disruption of the plumbing system the two body sections can be connected together when the fuselage is separated just a dummy jack not shown is required to support the forward portion of the aftbody 10b for assembly the tank is empty and the forebody 10a is slid onto and attached to the tank at the inside of the forward torroid 16 and then the outer structural skin 11 of the fuselage 10 and its stringers 34 are butt jointed at the fuselage break 57 and fastened together normally for filling or emptying of the tank shown in the preferred embodiment installation it would not be removed from the fuselage of the aricraft however if the tank support structure were modified.