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When making an Engineering Change, what must you consider?

November 28, 2011

When a change is being initiated, evaluated, and approved, the following must be considered:

  • Inventory status of the old items. How many of the old items are in Receiving? Must they be scrapped, or can they be reworked? What is the cost, time, and touch labor required to scrap, or rework?
  • Production status of the old items. How many of the old items are in work-in-process (WIP), and on the production floor? Can they be reworked to the new configuration considering their current stage of completion, assembly, and/or installation? Can they be used up before the change is effective, or must they be scrapped? What is the leadtime, and cost for production of the new item? What is the additional leadtime for building tooling, fixtures, and/or testing equipment?
  • Procurement status of the old items. Is the old item on order? Can it be cancelled, or reworked? At what cost? What is the leadtime for procuring the new item? Are new Suppliers required?
  • Impact on your Suppliers, sub-tiers, and customers. What notification is required? How long will the process take? What documentation, tech-manuals, and/or catalogs need to be updated? What are the implications on spare parts, and/or kits?
  • Any testing, and regulatory requirements. Are the changes significant enough to require retesting? What testing needs to be performed? Does the product need to be recertified? What regulatory approvals are required?

So, when making an Engineering change, what do you think needs to be considered?

2 Comments leave one →
  1. Socorro permalink
    November 28, 2011 6:14 pm

    If I had to make an engineering change, I would hire and consult with Aidan Foley.

    • November 28, 2011 6:23 pm

      Socorro, thanks! Many changes are happening. Progress is slow, but Rome wasn’t built in a day. Endurance is the word of the day.

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