SD-19 Parts Management GuideIn todays acquisition environment-characterized by rapidly changing designs, increased risk for Department of Defense DoD weapon systems and equipment acquisition contracts due to an increase in the use of commercial part types, offshore manufacture of parts, and Diminishing Manufacturing Sources and Material Shortages DMSMS-the need for contractors to have an effective Parts Management Program PMP is greater than ever before.The PMP is an integral part of the acquisition process for design, development, modification, and support of weapon systems and equipment.

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those requirements have a major impact on the program costs in the outyears. Therefore, im- plementing an effective parts management plan early in the program can have a significant im- pact on the program's life-cycle cost.

Figure 2. Notional Spending Profile for a Typical Acquisition Program

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Concept       Design         Test       Production    Support

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Design  effectiveness  reflects  the  key  design  features  that  provide  technical  performance  and supportability. Parts management contributes to both of these design goals through the tenets of part selection. Choosing the optimum part during design requires consideration of myriad fac- tors, including technical characteristics, reliability, life-cycle cost, commonality, performance his- tory, vendor performance, qualification, potential obsolescence, standardization, manufacturing, and maintenance. The following highlights how parts management contributes to these design considerations:

•  Reliability and maintainability engineering. Ensuring that the parts selected meet contractual requirements and proper design application is critical to ensuring that the reliability and maintainability requirements of the weapons systems or equipment acquisition contracts are met. Reliability and maintainability have a direct impact on both mission capability and life-cycle cost. The part selection process will also reduce the use of parts with known built-in failure mechanisms, resulting in enhanced reliability, maintainability, and system safety.

•  Standardization. Reducing the proliferation of part types used in system designs through standardization is important for enhancing material readiness and interoperability and for reducing total ownership costs. Selecting standard or commonly used parts ensures that reliable and documented part types that reduce design risks are used. Use of standard or commonly used parts within and across DoD weapons systems and equipment enhances inter- or intra-departmental part commonality and interchangeability; reduces the variety

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