There is a category of scrap where the recoverable value is the least interesting thing about it.
A non-conforming part, a time-expired rotable, a component pulled after a quality escape — the metal is worth something, but the reason it needs careful handling is that it looks exactly like a serviceable part. Left intact and sold as scrap, it can be cleaned up, re-tagged and sold back into the supply chain. Unapproved parts have been a recognised airworthiness problem for decades, and the organisation whose name is on the disposition record is the one that gets the phone call.
This is why quality organisations in aerospace treat scrapping as a controlled process with an output document, rather than as waste removal.
Discard is not the same as destroy
The distinction that matters is between disposal and mutilation.
Disposal moves a part off your site. Mutilation renders it permanently unusable as a part — physically altered so that it cannot be restored, re-identified or passed off as serviceable. A part that has been mutilated correctly is scrap metal. A part that has merely been thrown away is a part in a skip.
What counts as adequate mutilation depends on the part. The general principle is that the alteration must defeat both function and identity. Cutting through the load-bearing section. Crushing or deforming so that dimensional restoration is not possible. Removing or obliterating part numbers, serial numbers and any data plate. Destroying the identification alone is not enough — an unmarked but intact component can still be sold. Destroying the function alone is not enough either, because a recognisable data plate on a damaged part invites a fraudulent re-identification.
Melting is the endpoint that removes all doubt, and for many alloy streams it is where the material ends up anyway. What matters for your record is that the part is unusable and unidentifiable before it leaves controlled custody.
The parts of the process that go wrong
The gap between “scrapped” and “destroyed.” A part is dispositioned as scrap on Monday and physically mutilated three weeks later, in between sitting on a rack or in a bin in an unsecured area. Every hour in that interval is an hour where the part exists, is intact, and is off the quality system’s radar. Narrowing that interval is usually the single largest improvement available to a quality organisation.
Segregation that relies on people remembering. Non-conforming material needs a physically distinct, controlled route from the moment of disposition — a locked cage, a sealed container, a separate stream — not a labelled bin next to the general scrap bin. Mixed streams are how intact parts leave in a load of turnings.
Witnessing that nobody documented. Many organisations require destruction to be witnessed. If the witness is not named on the certificate, the requirement was met and not recorded, which for audit purposes is the same as not being met.
Export control treated as a separate problem. Where the material is subject to US export control, custody and destination are regulated regardless of the fact that the part is scrap. That constrains who can take possession, where processing can occur, and what has to be documented. It is not a question you want to discover downstream. TDR is registered with the US Directorate of Defense Trade Controls, and we plan controlled material handling before anything moves rather than after.
Assuming the recycler understands the difference. Most scrap yards are set up to buy metal by weight. Asking one to destroy identity and function, segregate a stream, permit a witness and issue a defensible certificate is asking for a different service than the one they sell. It is worth asking directly.
Alloy segregation is not a side issue
Aerospace scrap carries genuine value, and that value is destroyed by mixing. Titanium alloys, nickel superalloys, and the aerospace aluminium grades all settle very differently, and a blended load prices near the least valuable thing in it.
Which means segregation serves two purposes at once. It protects the value of the material, and it makes the controlled stream physically distinct from the uncontrolled one. A programme designed around segregated containers at the point of generation — by alloy, and with non-conforming material separated from ordinary production scrap — tends to solve the compliance problem and the recovery problem with the same equipment.
Turnings, tooling, test articles, development hardware and obsolete inventory each have their own handling logic. Turnings carry cutting fluid that has to be managed. Tooling may carry proprietary geometry that the owner wants destroyed for reasons unrelated to airworthiness. Obsolete inventory is often the largest single opportunity, and the one most likely to be sitting in a corner of a stores area because nobody wants to make the decision.
What your file should contain when it is over
Working backwards from an audit, the record should let someone reconstruct the whole path: the disposition decision and who made it, the part and serial or lot identifiers, the segregation and custody from that point, the transfer to the processor with a signed custody document, the mutilation method applied, the date and physical location of destruction, the witness if there was one, and the reconciliation between what was sent and what was destroyed.
A certificate that says “materials were destroyed in accordance with industry standards” reconstructs nothing. We have written separately about what belongs on a certificate of destruction, and the aerospace case is the one where the difference bites hardest, because the failure mode is not a fine — it is a part on an aircraft.
Where we fit
We run our own industrial shredding and processing equipment at our facility in Arlington, Texas, in the middle of the DFW aerospace corridor. That means non-conforming parts are destroyed under our custody and our certifications, not handed to a subcontractor, and the certificate has our name on it. We are ISO 9001 certified, which matters when your own quality system has to evidence supplier control, and registered with DDTC under ITAR for controlled material.
We are happy to look at a programme rather than a load — segregated containers by alloy at the point of generation, a controlled route for non-conforming material, scheduled collection, and documentation that arrives in a form your quality organisation can file.
If you are working through how to handle a non-conforming stream, obsolete inventory or a tooling clearance, email info@tdrrecycle.com with what you have. Site visits are welcome — for this kind of work we would rather you saw the equipment before you trusted the paperwork.
