1. A maintenance system for generating maintenance information on at least one system that contains several system components, comprising at least one arithmetic unit; and at least one input/output means; wherein the maintenance system is configured for receiving operational data of a system from a central control unit of the system; wherein the maintenance system is configured for identifying a fault of a system component based on the operational data; wherein the maintenance system is configured for comparing the identified fault with predefined known faults; wherein the maintenance system is configured for retrieving already performed or predefined maintenance operations that are correlated to the known faults from a random access memory, as well as for selecting and outputting as maintenance information a maintenance operation that is correlated to the identified fault in order to correct the fault; and wherein the maintenance system is further configured for determining the replacement of a system component and the correction of an identified fault.