An aircraft passenger cabin includes modular interior components selected from ceiling panels, wall panels, dado panels, window funnels, light covers, and baggage compartments or hat racks. At least one interior component is a standardized modular building block that can be used uniformly and interchangeably in different cabin configurations and sizes, in different aircraft types having different fuselage cross-sectional sizes and configurations. The interior components are modularly combined so as to be adapted to different passenger cabins in the various aircraft types. The multiplicity of distinct interior components among all aircraft types in the entire product range of an aircraft manufacturer is reduced, so that the piece count of each particular type of component is increased, and the manufacturing, installation, maintenance, replacement and inventorying costs are reduced. The time and cost for a new cabin design are reduced.