An aircraft component assembly system for the assembly of an interior component, a pipe or an electric line in an aircraft includes at least one arc-shaped frame element, a connection element that extends between a first and a second end of the frame element, and a fastening apparatus for fastening the interior component, the pipe or the electric line to the frame element or the connection element. The system also includes a first guide device that is provided on the frame element or the connection element and is devised to interact with a second guide device, which is complementary to the first guide device and provided on an aircraft structure, in such a way that the aircraft component assembly system is connectable to the aircraft structure in a manner displaceable relative to the aircraft structure.