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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This technique will avoid duplication of effort and ensure that only the parts listed in the PPL

are used. The PPL should be made available for use as early as possible during the design stage.

The intent of a PPL baseline is to maximize standardization during design by tailoring, streamlining, and minimizing the variety of types, grades, or classification of parts used in an acquisition. A PPL baseline should be used when parts are to be managed in a parts selection practice. Tailoring the PPL baseline requirements for a specific contract should be based on the following factors:

•  Restrictions on the use of certain parts or part types

•  Limitations in design imposed by part usage restrictions

•  Reliability requirements

•  DMSMS.

Parts Selection and Authorization

An in-house parts selection process should be followed and documented by the parts manage- ment representative, Parts Management Board (PMB), or IPT. Procedures for authorizing new parts should be included. The procedures should identify the entity responsible for authorizing parts for use and the structure and membership of the PMB or IPT, if applicable. Figure 4 is

an example of a part selection process.

Order of Preference for Parts Selection

To maximize standardization and reduce life-cycle costs, parts should be selected based on the order of preference list in MIL-STD-3018, as applicable. Depending on contractual require- ments, the following part selection criteria should be taken into account:

•  Availability (DMSMS concerns, aging technology, number of sources)

•  Application (derating, operation, use of the part, type of environment in which the part will be used)

•  Cost-benefit analysis

•  Part screening

•  Qualification test data or past performance data

•  Supplier selection

•  Part technology/obsolescence (use of DMSMS databases, GIDEP)

•  Compliance with contract performance requirements

•  Technical suitability

•  Government life-cycle cost optimization.

If alternate or substitute parts are to be selected, consider them in descending order of pref- erence (i.e., most desirable to least desirable).

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