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  • Question

    How many classes of drawing changes are there now? What are the classes? Where, what document, do I find this information? How do I obtain this document so I can make a copy? Thanks for your help. Bill Walker


    Answer

    MIL-HDBK-61 provides Configuration Management Guidance in this realm. The old MIL-STD-973 provided more explicit details in Configuration Management.

    There are multiple ways to express the two categories:

    Class I vs Class II
    Major vs Minor
    Type I vs Type II

    If a change affects "form, fit, function or funding", it is considered to be
    Class I or Major or Type I.
    If a change does not affect "form, fit, function or funding", it is considered to be Class II or Minor or Type II.
    Sometimes, contractors use internal management systems somewhat different from the DoD. NASA sometimes uses management systems somewhat different from the DoD.

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