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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Parts Standardization and Management Committee (PSMC). A government and industry forum that influences and supports parts management and standardization.

Potential Part. A part reviewed by the PMB and deemed not justified for use at that time although the part may have potential future usage.

Preferred Parts List (PPL). A list of parts preferred for use in equipment design, which often con- tains descriptions, attributes, or application information.The term is used in this document to represent the names of several different contractor and government parts lists. Examples of such lists are approved parts lists, approved parts baselines, corporate baselines, common parts lists, common corporate parts lists, parts selection lists, preferred parts lists, and program parts selec- tion lists.These parts lists have similar purposes, but their degree of application varies from company to company and within different government acquisitions.

Preferred (Standard) Part. A standard part that by the nature of its historical usage or its future po- tential usage has been designated by the PMB as "standard" or preferred for use in equipment. The part shall be adequately controlled and documented by a government; an NGS body; or a company specification, standard, or drawing.

Prohibited Parts List. A list of parts deemed unacceptable by the PMB for use in a company's prod- ucts because of cost, quality, safety, etc.

Substitute Parts List (SPL). A list of all approved substitute parts used in production equipment.

SPLs are typically established by program or project, as the viability of a substitute part is deter- mined against specific application requirements. Substitute parts are used instead of an equiva- lent part listed in the PPL and the BOM, and are typically used on a limited basis.

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