Operational availability

Operational availability in systems engineering is a measurement of how long a system has been available to use when compared with how long it should have been available to be used. Operational availability in systems engineering is a measurement of how long a system has been available to use when compared with how long it should have been available to be used. Operational availability is a management concept that evaluates the following. Any failed item that is not corrected will induce operational failure. A o {displaystyle A_{o}} is used to evaluate that risk. Operational failure is unacceptable in any situation where the following can occur. In military acquisition, operational availability is used as one of the Key Performance Parameters in requirements documents, to form the basis for decision support analyses.