The maintenance system can be analyzed in differrentiated manners. It can be considered as a part of enterprise information infrastructure, too. This paper attempts to summarize some of the most important principles of maintenance data management in the field of supportability analysis. Supportability analysis has been viewed as the process of recognizing support requirements for a new system with the purpose to ensure that the technical system will perform as intended. The paper is also directed toward exploring what the maintenance data are to a logistician. It includes additional considerations relating to elements such as product-service bundle database and logistics information system. In short, the paper describes maintenance aspect of the concept of through life information management.