A device and a method for supplying spare parts of an aircraft to a maintenance and/or repair center, such as a hangar. From data of previous transactions with the spare parts and from technical data relating to the spare parts, probabilities are calculated that certain spare parts are needed together, enabling them to be supplied together. According to a further aspect, different vending machines at the maintenance and/or repair center are proposed, with which the spare parts for a maintenance or repair task can be supplied together.