A supporting profiled demerit is configured to support a reinforcing profiled element that is formed from a fiber composite semi-finished product during a curing process of a method for producing a vehicle fuselage component, during which the reinforcing profiled element is bonded to a surface of a fuselage shell that is also formed from a fiber composite semi-finished product. The supporting profiled element includes an air-impermeable profiled hose having two ends and a first end piece that is detachably inserted at a first of the two ends of the profiled hose so as to form an insertion connection. The first end piece is sealed against the profiled hose by the insertion connection.