Published 2026 | TIKC NewsWire
For a lot of government parts, especially on defense work, you cannot just buy from whoever is cheapest. The item can be restricted to an approved source, or it can require that the part come from a maker on a qualified products list. These rules exist because a failed part can cost lives, so the government decides in advance who is allowed to supply it. Here is where contractors get into trouble: you source a part from someone not on the list, or you certify you are an approved source when you are not. In that moment, a sourcing shortcut becomes a false claim.
What approved source and QPL mean
Some parts carry a source-approval requirement, meaning only specific, pre-qualified manufacturers may provide them. Others sit on a qualified products list or qualified manufacturers list, where a maker has already been tested and approved for that item. When your contract calls for an approved source or a listed product, that is a hard requirement, not a suggestion. Supplying a part from outside that approved set, even if it looks identical, breaks the deal you agreed to and misrepresents what you delivered.
Why a look-alike part is still a problem
Owners sometimes think that if the substitute part works, no harm is done. The government does not see it that way. The whole point of approving a source is trust in who made it and how. Shipping an unapproved part while certifying it meets the requirement is close kin to product substitution, and it opens the same door that lets counterfeit parts into the supply chain. The risk is not whether this one part happened to work. It is that you certified something about its origin that was not true.
Where honest firms slip
The slip is usually about pressure, not dishonesty. The approved source is backordered, the deadline is close, and another supplier can ship today. So you take it, tell yourself it is the same part, and move on. But the paperwork you submit says the part meets the source requirement, and that certification is now a false statement. The honest move when the approved source cannot deliver is to go to the contracting officer and ask, not to quietly swap in an unapproved part and certify around it.
What to do now
- Check the source requirement. Know whether each part needs an approved source or a listed, qualified product.
- Buy only from approved sources. Do not substitute an unapproved maker, even for an identical-looking part.
- Verify your suppliers. Confirm your vendors really are on the required list before you rely on them.
- Ask when you are stuck. If the approved source cannot deliver, go to the contracting officer, do not improvise.
- Keep the proof. Document the approved source of every restricted part you supply.
Sourcing under pressure is real, and the temptation to grab whatever ships today is understandable. But on restricted parts, where it came from is the product. Supply only from approved sources, ask for help when you are boxed in, and your certifications stay true even when the schedule is tight. Brick by brick.
FAQ
What is a source-approval requirement?
A rule that only specific, pre-qualified manufacturers may supply a given part, usually because a failure would be dangerous. Only those approved sources are allowed.
What is a qualified products list?
A list of products or makers already tested and approved for an item. When a contract requires it, the part must come from a listed, qualified source.
Is substituting an identical part okay?
No. If the part requires an approved source, supplying one from outside that set while certifying compliance is a false claim, regardless of whether the substitute seems to work.
What should I do if the approved source cannot deliver?
Go to the contracting officer and ask, rather than quietly swapping in an unapproved part and certifying around the requirement.
Sources
Federal Acquisition Regulation. (2026). Subpart 9.2, Qualifications Requirements, and source approval requirements.
Defense Logistics Agency. (2026). Guidance on qualified products lists, qualified manufacturers lists, and source approval.
This article is general information, not legal advice.
About the Author
Melanie Patterson
Founder and CEO of Team Integrity Knowledge Center and creator of GovCon iSource. Former nurse turned entrepreneur with over 10 years guiding small, women-owned, and minority-owned businesses to over $10 million in government awards. Build, grow, scale, brick by brick. Contact
