He first encountered Reliability-Centred Maintenance in 1981 and soon became aware of its universality and the extent to which it filled a void in general industrial maintenance thinking. This led him to seek out Stan Nowlan-co-author of the 1978 Nowlan & Heap report on RCM -in 1982. Under the personal guidance and mentorship of Stan Nowlan (which continued until Stan’s death in 1995), Moubray began to develop a suite of training and support services designed to transfer the technology of RCM to industrial clients.
In 1986, Moubray decided to concentrate exclusively on RCM. This led him to found Aladon Ltd in 1986 and Aladon LLC in the USA in 1998. Moubray headed Aladon as Chief Executive Officer until his death in 2004.
Moubray served on the committee that developed SAE standard JA1011, "Evaluation Criteria for RCM Processes". He also served on the committee that is revising the MSG3 standard under the auspices of the American Air Transport Association.
He also published numerous articles on RCM.