Corrective Maintainability
- Corrective Maintainability (a.k.a., Correctability)
- the type of maintainability
representing the degree of easiness with which corrective maintenance can be performed on a
business enterprise,
system,
application, or
component
- Corrective Maintenance
- Maintenance that identifies, analyzes, and corrects minor defects that have caused failures in a
business enterprise,
system,
application, or
component
As illustrated in the preceding figure, Corrective Maintainability is part of the following inheritance hierarchy:
The typical responsibilities of corrective maintainability are to:
- Model the ease with which minor defects that have caused failures in a system or component can be fixed.
- Support the analysis and specification of
corrective maintainability requirements.
- Provide a foundation for evaluating the quality of an architecture.
Corrective maintainability is typically decomposed into the following aggregation hierarchy of subfactors:
Corrective maintainability is typically measured in terms of:
- Mean and maximum:
- Cost per operating hour of corrective maintenance.
- Cost to perform specific corrective maintenance task.
- Effort (person-time) per operating hour due to corrective maintenance.
- Effort (person-time) to perform specific corrective maintenance task.
- Down (turnaround) time due to specific corrective maintenance task.
- The conditions (e.g., the size and structure of the
maintenance organization in terms of staff size, roles and
skills levels, and support equipment)
under which the corrective maintenance is taking place.
Typical mechanisms for improving corrective maintainability include:
The following guidelines have been found to be useful
regarding corrective maintainability:
