I have detected the following minor errors in my article, "Operating Characteristics of Opportunistic Replacement and Inspection Policies," Management Science, Vol. 10, No. 1 (October 1963), pp. 85-98, that might possibly cause some confusion. The first five "t's" appearing in the Preliminaries...

This paper is a survey of scheduling policies for stochastically failing equipment. The development of these policies has relied on a variety of mathematical techniques. This reliance together with the diversity of the applications has sometimes obscured the underlying structure that is common...