Complex availability: the new availability problem

A practical example of complex availability, the small intercontinental ballistic missile (ICBM) system, was explored. With dormant or semidormant systems, the amount of time a system appears available may differ from the real availability. The difference in real and apparent availability is often the result of a transition from an operational but dormant state to an inoperational but dormant state. A methodology to estimate the real availability of the Midgetman weapon system and the concept of complex availability, which is applicable to many types of modern manufacturing and military equipment, were developed.<>