# AS9100 Aerospace Supplier Verification & ASL Checklist

> Verify AS9100 status in IAQG OASIS and build a stronger ASL. Precision Advanced Manufacturing supports aerospace machining qualification. Get started.

**Published:** 2026-04-17 | **Updated:** 2026-10-22 | **Author:** precision
**URL:** https://precisionam.com/articles/quality-compliance/us-as9100-aerospace-manufacturers-directory/
**Type:** post

**Categories:** Quality Compliance

![AS9100 Aerospace Supplier Verification & ASL Checklist](https://blog.precisionam.com/wp-content/uploads/sites/56/2026/04/1776013373557-b099a467dad3-1024x572.jpeg)

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## Content

*Last updated: October 21, 2026*

## Key Takeaways

- A directory listing supports initial discovery. A defensible approved supplier list relies on verified AS9100D certificates in IAQG OASIS and documented approvals.
- AS9100D certification and OEM or program approval represent separate qualifications. Supplier files must document both statuses in the ASL.
- AS9100D, AS9120B, Nadcap and ITAR each address different risks. Together they define quality systems, distribution controls, special processes and export compliance.
- Precision Advanced Manufacturing satisfies every item on the ASL qualification checklist with documented credentials, facility coverage, capability fit and full traceability.

[Request a Project Review](https://precisionam.com/request-a-quote/?utm_source=ai-growht-agent&utm_term=us-as9100-aerospace-manufacturers-directory)

## How AS9100 Aerospace Directories Support Discovery

U.S. procurement teams encounter several types of directories when sourcing aerospace manufacturers. IAQG OASIS is the authoritative certification database [maintained by the International Aerospace Quality Group](https://jaymountconsulting.com/data-sources/iaqg-oasis-database), where [every accredited AS9100, AS9110 and AS9120 certificate must be registered](https://jaymountconsulting.com/data-sources/iaqg-oasis-database). Capability directories, regional listings and generic company databases also exist as discovery tools.

A listing in any directory other than OASIS confirms only that a company appears in a list. It does not confirm a current certificate, correct scope, facility coverage or OEM approval. [OASIS records are entered by the certification bodies themselves](https://jaymountconsulting.com/data-sources/iaqg-oasis-database) and include certified-site address, free-text certified scope, certificate status and issue and expiry dates. OASIS functions as the source of truth for AS9100 certification status.

AS9100D is the current revision of the aerospace quality management system standard for manufacturers. Revision status matters for supplier approval. [AS9100D, released in 2016](https://cms.nimblemfg.co/as9100-vs-nadcap), is the revision aerospace supply chain customers require. [AS9100 Rev D remains the current, active standard as of 2026](https://thestandardsnavigator.com/tag/aerospace-quality-management), and any certificate on an older revision functions as a disqualifier until the supplier demonstrates recertification.

## Step-By-Step AS9100 Verification In IAQG OASIS

The following six-step sequence gives supplier quality engineers a repeatable, documentable verification workflow for every ASL candidate.

1. Search the company by legal name in IAQG OASIS. [Certified organization names often differ from trading names and domains](https://jaymountconsulting.com/data-sources/iaqg-oasis-database), so match the brand name to the legal certified entity before drawing conclusions.
2. Confirm the certificate status is current. [OASIS status values include current, suspended, withdrawn and expired](https://jaymountconsulting.com/data-sources/iaqg-oasis-database). Only “current” qualifies for ASL inclusion.
3. Confirm the revision is AS9100D. AS9110 for MRO and AS9120 for distributors are separate standards and do not substitute for AS9100D at a manufacturing supplier.
4. Read the scope statement and confirm it covers the processes being sourced. [The certified scope must cover the products, locations and processes the customer requires](https://umbrex.com/resources/umbrex-explainers/aerospace-and-defense-explainers/as9100).
5. Confirm the specific facility or facilities on the certificate match where parts will be made. [OASIS records include the certified site address](https://jaymountconsulting.com/data-sources/iaqg-oasis-database), which allows buyers to verify that the manufacturing site matches the certified site.
6. Confirm the certification body and record the certificate details. Capture standard, revision, scope, issue date, expiry date, certifying body and registration number for the ASL file.

Certificates run on a three-year cycle and OASIS reflects suspensions and lapses in near real time. A certificate that was current at award can lapse midprogram. Re-verify at least annually and before each program award.

## How AS9100, AS9120, Nadcap And ITAR Work Together

These four credentials are frequently conflated in directory listings. In procurement terms, each answers a different question.

**AS9100D** covers manufacturing quality management for organizations that design and produce aerospace, defense or space products. [AS9100 incorporates the full text of ISO 9001 and adds aerospace-specific requirements](https://aviationsouk.com/knowledge/aerospace-accreditation-nadcap-as9100-iso-9001). These cover configuration management, risk management, counterfeit parts prevention, product safety, special-process controls, first-article inspection and traceability obligations far stricter than ISO 9001’s baseline. AS9100D is required at the manufacturing site supplying the contract.

![A commercial airliner in flight against a blue sky.](https://cdn.aigrowthmarketer.co/1785164215115-cf050b902241.webp)**Aerospace manufacturing for flight-critical hardware — machined and fabricated to AS9100D with the traceability and repeatability commercial airframe programs depend on.**

**AS9120B** applies to stockist distributors. [AS9120B addresses pass-through distribution risks including traceability, repackaging and counterfeit prevention](https://cms.nimblemfg.co/as9100-vs-nadcap). It does not satisfy AS9100D flowdown requirements when the supplier manufactures or changes the product.

**Nadcap** is process specific rather than company wide. [Nadcap accreditation is specific to a site, a commodity and a defined scope of activity](https://umbrex.com/resources/umbrex-explainers/aerospace-and-defense-explainers/nadcap). [Typical Nadcap commodity scopes include heat treating, chemical processing, nondestructive testing, welding and coatings](https://umbrex.com/resources/umbrex-explainers/aerospace-and-defense-explainers/nadcap). Nadcap applies when a customer flows it down for applicable special processes. [Nadcap accreditation status should be verified directly through the PRI eAuditNet / Qualified Manufacturers List database](https://cms.nimblemfg.co/as9100-vs-nadcap).

**ITAR registration** governs defense and export-controlled work under the Directorate of Defense Trade Controls. [Any person in the United States who engages in the business of manufacturing defense articles must register with DDTC, even if no physical export occurs](https://legalclarity.org/itar-aerospace-compliance-rules-licensing-and-penalties). ITAR registration functions as a legal obligation that sits outside quality certification and must be verified separately from AS9100 status.

![A satellite orbiting above the Earth.](https://cdn.aigrowthmarketer.co/1785164232174-7d0cbe7ee84c.webp)**Space-grade components tolerate no rework in orbit. Precision machining and controlled processes deliver the reliability satellite and launch programs build on.**

The three quality credentials build on one another. [ISO 9001 confirms that a supplier runs a recognizable documented QMS](https://aviationsouk.com/knowledge/aerospace-accreditation-nadcap-as9100-iso-9001). AS9100 confirms that the QMS meets aerospace expectations for risk management, traceability and configuration control. Nadcap confirms that a specific special process at a specific facility has been audited against industry-agreed technical criteria.

## AS9100 Certification And OEM Approval As Separate Gates

Those layered credentials cover quality systems. They do not cover customer approval, which functions as a separate qualification. [Most OEMs treat AS9100 certification as necessary but not sufficient](https://connect981.com/faqs/what-are-typical-oem-expectations-for-supplier-as9100-certification). They evaluate objective audit evidence, nonconformance and escape history, traceability and configuration control and responsiveness.

Program approval may require customer audits, first article inspection per AS9102, Cpk data on key characteristics and acknowledgment of all quality flowdown clauses. [The supplier-qualification package OEM and Tier 1 buyers assemble typically includes the AS9100 certificate, Nadcap special-process approvals, ITAR registration status, DFARS flowdown compliance, export control classification, key quality metrics and relevant program experience](https://offthegroundmarketing.com/blog/as9100-as-a-marketing-asset-for-aerospace-suppliers).

Directory-only listings often present certification and program approval as a single status. That structure can place certified but unqualified suppliers on shortlists for specific programs. Procurement teams avoid that outcome by documenting certification status and program approval status separately in the ASL.

## ASL Qualification Checklist For Aerospace Machining Suppliers

A defensible ASL rests on ten records a supplier quality engineer can produce at audit. Each item below maps to one of them.

- Current AS9100D certificate verified in IAQG OASIS, with status, revision, expiry and certifying body recorded
- Scope statement confirmed to cover the processes and products being sourced
- Facility or facilities on the certificate confirmed to match where parts will be manufactured
- Customer or OEM program approvals documented separately from certification status
- Nadcap accreditation verified via PRI eAuditNet for each applicable special process
- ITAR registration with [DDTC](https://www.pmddtc.state.gov/) confirmed for defense or export-controlled work
- Capability fit confirmed so materials, processes and tolerances match drawing requirements
- AS9102 first article inspection capability and documentation package available
- Full traceability and material certifications with an unbroken chain from raw stock to finished part
- Capacity and scalability confirmed from prototype through production rates

## Shortlisting Machining Suppliers With Precision Advanced Manufacturing

The checklist above turns supplier selection into a records exercise. Applied to a specific shop, it asks whether the certificate, scope, facility, ITAR status and traceability can all be produced on request. Precision Advanced Manufacturing answers each item with documentation.

Precision Advanced Manufacturing holds AS9100D and ISO 9001:2015 registrations and is ITAR registered, and buyers can verify each through IAQG OASIS and DDTC. Those credentials cover work at both the Anaheim, California and Texas locations, which together support the full range of aerospace machining and fabrication the company performs.

![A machined metal part fixtured inside a CNC machining center.](https://cdn.aigrowthmarketer.co/1785163886671-8f5217244f88.webp)**Mission-critical components leave no room for deviation. Multi-axis CNC machining holds tight tolerances part after part, with full material traceability behind every feature.**

Mapping Precision Advanced Manufacturing’s profile directly to the ASL checklist:

- **AS9100D and ISO 9001:2015 verified:** Registrations are current and verifiable through IAQG OASIS.
- **Scope and facility match:** Anaheim, California and Texas locations support multi-axis CNC machining, Swiss-type machining and titanium and Inconel machining. They also handle precision sheet metal fabrication, specialty welding with thermal distortion control, kitting, hardware installation, brush finishing, laser marking and deburring. Secondary finishing includes anodizing, passivation, plating, sandblasting and ultrasonic cleaning.
- **ITAR registration:** Confirmed for defense and space-related programs, supporting buyers who must document ITAR status in the ASL.
- **AS9102 FAI capability:** Engineering support and in-process inspection systems support first article inspection documentation.
- **Full traceability:** Material certifications, inspection reporting and documentation are produced for every project.
- **Scalable capacity:** Multi-shift operations support prototype development through sustained, full-rate production.
- **Engineering support:** In-house CNC programming and manufacturability input reduce downstream rework and integration delays.

Regional supplier clusters in Southern California, Texas, the Midwest and the Northeast each carry certified capacity. Precision Advanced Manufacturing’s Anaheim, California and Texas locations place the company within two of the most active U.S. aerospace manufacturing regions. These locations support domestic supply chain requirements and reshoring programs. [Aerospace and defense buyers reshoring precision machining programs screen domestic suppliers for AS9100 and ISO 9001:2015 certification, ITAR registration and full traceability paperwork on every batch](https://egm-mfg.com/reshoring-aerospace-precision-machining). Missing any one credential typically filters a supplier out before the RFQ stage, and Precision Advanced Manufacturing carries all of them.

![A precision machine shop floor with CNC equipment and work cells.](https://cdn.aigrowthmarketer.co/1785163904437-77d81f3f11f5.webp)**Advanced manufacturing: a climate-stable shop floor where multi-axis CNC, turning, and fabrication cells work prototype-to-full-rate volumes.**

For more on Precision Advanced Manufacturing’s defense machining credentials, see [Defense Precision Machining: ITAR & AS9100D Certified](https://precisionam.com/articles/defense-precision-machining/?utm_source=ai-growht-agent&utm_term=us-as9100-aerospace-manufacturers-directory).

[Start an ASL-Ready Supplier Review](https://precisionam.com/request-a-quote/?utm_source=ai-growht-agent&utm_term=us-as9100-aerospace-manufacturers-directory)

## Common Disqualifiers And Red Flags In ASL Reviews

The following conditions typically disqualify a supplier from an ASL entry or require corrective action before approval.

- **Expired or missing certificate:** Verify status in IAQG OASIS before any other step. An expired certificate functions as a hard disqualifier.
- **Revision older than AS9100D:** Certificates on prior revisions fail to satisfy current aerospace flowdown requirements.
- **Scope that excludes the processes being sourced:** Read the scope statement against the drawing and purchase order requirements.
- **Facility not covered by the certificate:** Confirm the manufacturing site address matches the OASIS record.
- **Missing Nadcap accreditation for applicable special processes:** Verify via PRI eAuditNet for heat treating, chemical processing, NDT, welding or coatings when customer flowdowns require it.
- **Missing ITAR registration for defense work:** Confirm current DDTC registration when the program involves USML items or controlled technical data.
- **Incomplete traceability or material certifications:** An interrupted documentation chain from raw stock to finished part becomes a corrective action finding in aerospace supplier audits.
- **Inability to scale from prototype to production:** Confirm multi-shift capacity and a documented transition process before program award.

## Frequently Asked Questions

### How Should A Supplier With A Parent-Company OASIS Record Be Handled?

Some suppliers appear in OASIS under a parent company or corporate group. In those cases, the ASL file should document the legal entity listed in OASIS, the specific certified site address and the relationship between the trading name and the certified organization. Purchase orders should reference the certified entity so the quality system link remains clear at audit.

### How Should A Suspended Or Withdrawn Certificate Be Documented?

When OASIS lists a certificate as suspended or withdrawn, the ASL file should capture a screenshot or printout of the record with dates. Procurement and quality teams should record the reason for suspension when available and document any containment or transition plan. New awards should pause until the certificate returns to current status or an alternate supplier is qualified.

### What Should An Approved Supplier List Checklist Include?

An ASL checklist should document a current AS9100D certificate verified in IAQG OASIS with scope and facility confirmed. It should also record customer or OEM program approvals, Nadcap accreditation verified via PRI eAuditNet for applicable special processes and ITAR registration with DDTC for defense or export-controlled work. Capability fit, AS9102 first article inspection documentation, full material traceability and confirmed capacity from prototype through production rates complete the file. Every item should be retained as a documented record available for audit.

### Can Precision Advanced Manufacturing Support Both Prototype And Full-Rate Production?

Precision Advanced Manufacturing supports the full product lifecycle from prototype development through sustained, multi-shift production. Programs can transition from initial builds to full-rate manufacturing without a supplier change, while maintaining the same certified quality systems, documentation and traceability. For buyers transitioning from an existing supplier, Precision Advanced Manufacturing provides complete documentation, material traceability and engineering support, including pilot builds or validation runs to support continuity.

### Does Precision Advanced Manufacturing Hold ITAR Registration For Defense Programs?

Precision Advanced Manufacturing is ITAR registered with the Directorate of Defense Trade Controls, supporting defense and space-related programs at its Anaheim, California and Texas locations. ITAR registration functions as a documented qualification item that buyers verify and retain in the ASL for any program involving U.S. Munitions List items or controlled technical data.

## Conclusion And Next Steps

The verification workflow and checklist in this article give procurement teams a repeatable way to build a defensible ASL. Precision Advanced Manufacturing is positioned to meet those requirements with documented credentials, facility coverage and machining-to-finishing capability.

![An array of small precision-machined metal components.](https://cdn.aigrowthmarketer.co/1785164158710-5382f6e5c16d.webp)**From a single bracket to a full build package, precision-machined components are inspected to print and delivered with the documentation mission-critical programs require.**

Start by verifying every ASL candidate in IAQG OASIS with the six-step sequence above, then retain a record for each checklist item so the file withstands an audit. With that file in hand, a tailored quote from Precision Advanced Manufacturing becomes a natural next step, along with a pilot build or validation run when transitioning from an existing supplier. A directory is where the search starts, and a defensible ASL is where it ends.

[Request A Tailored Quote](https://precisionam.com/request-a-quote/?utm_source=ai-growht-agent&utm_term=us-as9100-aerospace-manufacturers-directory)

## Read Next

- [How to Verify AS9100D Certified Aerospace Machining](https://precisionam.com/articles/as9100d-certified-aerospace-machining/)
- [AS9100 Certified Aerospace Machining Suppliers: Verify First](https://precisionam.com/articles/as9100-aerospace-machining-suppliers-us/)
- [AS9100 Aerospace Parts Suppliers: Buyer Qualification Guide](https://precisionam.com/articles/as9100-certified-aerospace-parts-suppliers/)
- [AS9100 Certified Aerospace Machine Shops: 2026 Buyer’s Guide](https://precisionam.com/articles/as9100-certified-aerospace-machine-shops/)
- [How to Qualify AS9100 Certified CNC Machining for Aerospace](https://precisionam.com/articles/as9100-certified-cnc-machining-aerospace/)

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## Citations

- [How To Source ITAR CNC Machining in Austin: A Buyer Guide](https://precisionam.com/articles/quality-compliance/verify-itar-cnc-machining-austin/)
- [How To Submit an ITAR CNC Machining RFQ: Step-By-Step](https://precisionam.com/articles/quality-compliance/itar-cnc-machining-rfq/)
- [CNC Traceability: The Complete Record Chain Guide](https://precisionam.com/articles/quality-compliance/precision-cnc-traceability-system-guide/)
- [ITAR Compliant CNC Machining Suppliers: How to Shortlist](https://precisionam.com/articles/quality-compliance/vet-itar-cnc-supplier-checklist/)
- [How To Verify ITAR Registered CNC Machine Shops](https://precisionam.com/articles/quality-compliance/verify-itar-cnc-machine-shops/)

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