maintainability

n. state of being possible to maintain

In software testing, based on the definition given in ISO 9126, the ease with which a software product can be modified in order to:correct defectsmeet new requirementsmake future maintenance easier, orcope with a changed environmentIn telecommunication and several other engineering fields, the term maintainability has the following meanings: A characteristic of design and installation, expressed as the probability that an item will be retained in or restored to a specified condition within a given period of time, when the maintenance is performed in accordance with prescribed procedures and resources.The ease with which maintenance of a functional unit can be performed in accordance with prescribed requirements.
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1. A characteristic of design and installation, expressed as the probability that an item will be retained in or restored to a specified condition within a given period of time, when the maintenance is performed in accordance with prescribed procedures and resources. (188 ) 2. The ease with which maintenance of a functional unit can be performed in accordance with prescribed requirements.

The probability that a given maintenance action for an item under given usage conditions can be performed within a stated time interval when the maintenance is performed under stated conditions using stated procedures and resources. Maintainability has two categories: serviceability (the ease of conducting scheduled inspections and servicing) and repairability (the ease of restoring service after a failure).

The ability of an item, under stated conditions of use, to be retained in or restored to a state in which it can perform its required functions, when maintenance is performed under stated conditions and using prescribed procedures and resources. (IEC) 1/3/91

Dans des conditions données d'utilisation, aptitude d'un dispositif à être maintenu ou rétabli dans un état dans lequel il peut accomplir sa fonction requise, lorsque la maintenance est accomplie dans des conditions données avec des procédures et des moyens prescrits. (CEI) 1/3/91