Folowing is a summary of the reasons as to why manufacturing plants fail to achieve the desired level of RAM (Reliability, Availability and Maintainability) requirement:

• Poorly defined or unrealistically high RAM requirements.

* Lack of priority on achieving Reliability & Maintainability

* Too little engineering for RAM

• Failure to design-in reliability early in the development process
• Inadequate lower level testing at component or subcomponent level
• Reliance on prediction instead of conducting engineering design analysis.
• Failure to perform engineering analysis of commercial off the shelf equipment
• Lack of reliability improvement incentives
• Inadequate planning for reliability
• Ineffective implementation of Reliability Tasks in improving reliability
• Failure to give adequate priority to the importance of integrated Diagnositics (ID) design — influence on overall maintainability atributes, mission readiness, maintenance concept design and associated LCC support concepts.
• Unanticipated complex software integration issues affecting all aspects of RAM
• Lack of adequate Integrated Diagnostic (ID) maturation efforts during system integration.
• Failure to anticipate deisgn integration problems where incremental design approaches influence RAM performance.