Interaction with technological systems is an intrinsic part of daily life. The complexity of these man-made systems has reached unprecedented levels, and challenges the organizations that develop and utilize them. Simultaneously, they are often used in environments that imply very high requirements on safety, credibility, and reliability. Hence, users of complex systems need information support to access and maintain the utility and services that the system-of-interest is to provide. Examples of solutions for this are Built-in Test (BIT) and Condition Monitoring (CM) systems aimed at increased maintainability performance of technical systems. However, despite these solutions there are still drawbacks manifested by No Fault Found (NFF) and Dead-on-Arrival (DoA) events, which may erode any benefits that BIT and CM systems may provide. Hence, in spite of tremendous development of information services for complex systems, there is still a problem for users to access and understand the information. Therefore, the development of maintenance support information services need to be evolved. This paper describes a service-oriented approach to CM as support to maintenance of complex technical systems. The service-oriented CM can be integrated in an information logistics solution through the utilization of new and innovative Information & Communication Technology (ICT). The proposed approach is illustrated in the context of modern aircraft.