6.5 For Further Reading

The saga of the FAA's attempts to upgrade its air traffic control software has been written about extensively; for example, by [Gibbs 94]. The effort to audit the ISSS system for salvageability was reported by [Brown 95]. In these papers, maintainability is treated as a dual quality related not only to the properties of the system but also to the capabilities of the organization slated to perform the maintenance. This important aspect of maintainability-the necessary fit between the maintenance that a system needs and the maintenance that an organization is prepared to provide for it-is not usually discussed.