Aircraft interior component system having: - an aircraft interior component, - a first structure holder, which is able to be fastened to an element of the aircraft structure, and - a first component holder, which is fastened to the aircraft interior component and is complementary to the first structure holder, the first component holder being fastened to the aircraft interior component in a first region of the aircraft interior component which faces an aircraft cabin ceiling when the aircraft interior component is mounted in an aircraft, the first structure holder and the first component holder being designed to attach the aircraft interior component in a suspended manner to the element of the aircraft structure, and the aircraft interior component being configured such that, when the aircraft interior component is attached in a suspended manner to the element of the aircraft structure, a mounting gap is present, at least in a second region of the aircraft interior component which faces an aircraft cabin floor when the aircraft interior component is mounted in an aircraft, between a rear side of the aircraft interior component and an aircraft component opposite the rear side of the aircraft interior component, characterized in that the aircraft interior component comprises at least one supply line section (52a-c) which is connected to a first connecting device arranged in the second region of the aircraft interior component, the first connecting device being designed to cooperate with a second connecting device complementary to the first connecting device, in order to connect the supply line section (52a-c) of the aircraft interior component to a corresponding aircraft-side supply line section. - an aircraft interior component, - a first structure holder, which is able to be fastened to an element of the aircraft structure, and - a first component holder, which is fastened to the aircraft interior component and is complementary to the first structure holder, the first component holder being fastened to the aircraft interior component in a first region of the aircraft interior component which faces an aircraft cabin ceiling when the aircraft interior component is mounted in an aircraft, the first structure holder and the first component holder being designed to attach the aircraft interior component in a suspended manner to the element of the aircraft structure, and the aircraft interior component being configured such that, when the aircraft interior component is attached in a suspended manner to the element of the aircraft structure, a mounting gap is present, at least in a second region of the aircraft interior component which faces an aircraft cabin floor when the aircraft interior component is mounted in an aircraft, between a rear side of the aircraft interior component and an aircraft component opposite the rear side of the aircraft interior component, characterized in that the aircraft interior component comprises at least one supply line section (52a-c) which is connected to a first connecting device arranged in the second region of the aircraft interior component, the first connecting device being designed to cooperate with a second connecting device complementary to the first connecting device, in order to connect the supply line section (52a-c) of the aircraft interior component to a corresponding aircraft-side supply line section.