In engineering, maintainability is the ease with which a product can be maintained in order to:

  • isolate defects or their cause
  • correct defects or their cause
  • meet new requirements
  • make future maintenance easier, or
  • cope with a changed environment

In some cases, maintainability involves a system of continuous improvement - learning from the past in order to improve the ability to maintain systems, or improve reliability of systems based on maintenance experience.

In 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.


Software engineering

In software engineering, these activities are known as software maintenance (cf. ISO/IEC 9126).

The maintainability index is calculated with certain formulae from lines-of-code measures, McCabe measures and Halstead complexity measures.

The measurement and track maintainability are intended to help reduce or reverse a system's tendency toward "code entropy" or degraded integrity, and to indicate when it becomes cheaper and/or less risky to rewrite the code than it is to change it.

 This article incorporates public domain material from the General Services Administration document "Federal Standard 1037C" (in support of MIL-STD-188).

See also

Further reading

  • Blanchard S. B., Maintainability: A Key to Effective Serviceability and Maintenance Management, John Wiley & Sons Inc., NewYork 1995
  • Ebeling C. E., An Introduction to Reliability and Maintainability Engineering, McGraw-Hill Companies, Inc., Boston 1997.
  • Patton J. D., Maintanability and Maintenance Management, Instrument Society of America, Research Triangle Park, North Carolina 1988.

External links

Wikimedia Foundation. 2010.

Look at other dictionaries:

  • maintainability — pataisomumas statusas T sritis Standartizacija ir metrologija apibrėžtis Objekto savybė, rodanti, kad galima išlaikyti ir atitaisyti normaliojo veikimo būseną, kai jis prižiūrimas ir taisomas. atitikmenys: angl. maintainability vok.… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • maintainability — eksploatacinis patikimumas statusas T sritis Gynyba apibrėžtis Techninės priemonės savybė nustatytomis eksploatacijos sąlygomis išlikti tinkamo funkcionavimo būklės (ar būti grąžintos į tokią būklę), kai techninė priežiūra ir remontas yra… …   NATO terminų aiškinamasis žodynas

  • maintainability — noun see maintain …   New Collegiate Dictionary

  • maintainability — See maintain. * * * …   Universalium

  • maintainability — noun The ease with which something can be maintained …   Wiktionary

  • maintainability — Смотри Ремонтопригодность …   Энциклопедический словарь по металлургии

  • maintainability — meɪn teɪnÉ™ bɪlÉ™tɪ n. state of being possible to maintain …   English contemporary dictionary

  • maintainability — i. The ability of equipment to meet operational objectives with a minimum expenditure of maintenance effort under the operational and environmental conditions in which scheduled and unscheduled maintenance is performed. ii. Quantitatively, the… …   Aviation dictionary

  • maintainability — maintainabilˈity noun • • • Main Entry: ↑maintain …   Useful english dictionary

  • maintainability performance — taisomumas statusas T sritis automatika atitikmenys: angl. maintainability performance vok. Wartbarkeit, f; Wartungsfähigkeit, f rus. ремонтопригодность, f pranc. maintenabilité, f …   Automatikos terminų žodynas

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