NADCAP Accredited Special Process Suppliers in San Antonio, TX

NADCAP, administered by the Performance Review Institute, is an industry-managed program in which aerospace primes pooled their oversight of special processes into one rigorous, harmonized audit. The logic is straightforward: a heat-treat cycle or a penetrant inspection either was done right or it wasn't, and you usually can't tell by looking at the finished part. Rather than have every prime audit every process house separately, NADCAP provides one deep, technical audit that the whole industry recognizes, and primes mandate it for the processes they care about. For a buyer in San Antonio sourcing aerospace work, this means AS9100 on the machine shop is necessary but not sufficient. If your part gets heat treated, anodized, shot peened, welded, or NDT-inspected, the spec or the prime almost certainly requires NADCAP accreditation on that specific operation. A machine shop with AS9100 but no NADCAP coverage for its special processes either holds the accreditations in-house or routes those steps to accredited subcontractors. Your job is to confirm every special process in the routing traces to a current NADCAP accreditation, because an unaccredited process anywhere in the chain is grounds for rejection at the prime.

NADCAP is organized into commodity programs, and you should know which ones touch your part. Heat treatment (HT) covers controlled thermal processing of metals. Chemical processing (CP) covers anodizing, passivation, plating, and similar surface treatments. Nondestructive testing (NDT) covers penetrant, magnetic particle, radiographic, ultrasonic, and eddy-current inspection. Welding (WLD) covers fusion and resistance welding of aerospace structures. Coatings cover thermal spray and other surface coatings. There are more, including nonconventional machining, materials testing labs, and composites, but those are the ones most commonly required on machined and fabricated flight hardware. In San Antonio, the aerospace MRO base means heat treat, NDT, and chemical processing are the workhorses you'll find well represented, because overhaul and repair work leans heavily on inspection and reprocessing. When you map your part's routing, list every special process by commodity and verify each one separately, since a supplier accredited for heat treat is not automatically accredited for NDT. Each accreditation is process-specific and scope-specific, and a coating house accredited for one coating type may not cover the one your spec calls out.

The authoritative source is eAuditNet, the PRI database where NADCAP accreditations are recorded. Search the supplier, confirm the specific commodity is accredited, and check the accreditation is current, not lapsed or suspended. Crucially, read the scope, because accreditation is granted against specific specifications and customer approvals. A heat-treat house may be NADCAP accredited but not approved to the particular prime's spec your part requires, in which case the accreditation alone doesn't get you over the line. For many programs, you also need the prime's own approval (a customer Nadcap merit or direct qualification) layered on top. Managing the routing is where local sourcing earns its keep. A flight part might go from machining to heat treat to NDT to coating to final inspection, four or five handoffs. In San Antonio, keeping those steps in-region means hours of transit between operations instead of days of cross-country freight, which compresses lead time and reduces the chances of damage or paperwork loss in transit. It also lets you or your quality team witness a process or review records in person. Confirm each special-process subcontractor delivers a cert of conformance referencing its NADCAP accreditation and the applicable specification, and that the certs assemble into a complete, traceable package back to the prime.

Special processes are a major driver of aerospace lead time precisely because they add handoffs and require batch controls, controlled furnaces, and recorded inspections. A new part needing first-article approval through multiple NADCAP processes can take weeks just to clear the qualification cycle. Budget for that, and front-load the verification, because discovering mid-program that a process house lacks the right accreditation or spec approval forces a re-source and resets the clock. The cost of getting it wrong is steep and specific. If a part runs through an unaccredited or out-of-scope special process, the prime can reject the entire lot regardless of dimensional conformance, and you may have no path to use the parts without rework or full rerun. That risk is why front-loading eAuditNet verification on every commodity in the routing is non-negotiable. San Antonio's advantage here is depth in the common commodities and regional access to Dallas-Fort Worth for anything exotic, so you can usually assemble a fully accredited routing within Texas. The realistic discipline is to map the routing, verify each commodity and its spec approvals in eAuditNet before release, and require complete special-process certs in the delivered package.