If you procure machined components for aerospace applications, you have almost certainly encountered the term AS9100. But what does this certification actually mean? And more importantly, how does it protect you as a buyer?
What Is AS9100?
AS9100 is the internationally recognized quality management system (QMS) standard for the aerospace industry. Published by the International Aerospace Quality Group (IAQG), it builds on the ISO 9001 foundation and adds requirements specific to aviation and space — including product safety, configuration management, risk management, and enhanced traceability.
The current revision is AS9100 Rev D, which aligns with ISO 9001:2015 and incorporates lessons learned from decades of aerospace manufacturing. It is not a self-declared standard — certification requires audit by an accredited third-party registrar, with surveillance audits conducted annually.
Why Does AS9100 Matter for Your Supply Chain?
When you work with an AS9100 certified supplier like Tru-Tech Precision, you gain several concrete assurances:
- Documented processes: Every step — from order review through final inspection — follows controlled procedures. This means consistent results regardless of which machinist or inspector handles your job.
- Material traceability: AS9100 requires full material traceability from raw stock to finished part. You receive mill certifications, material test reports, and certificates of conformity with every shipment.
- Risk management: Certified shops must identify and mitigate risks throughout the manufacturing process. This proactive approach catches potential issues before they become defects.
- Non-conformance control: When something does go wrong, AS9100 mandates structured corrective action processes — root cause analysis, containment, and verification that fixes actually work.
AS9100 vs. ISO 9001: What Is the Difference?
ISO 9001 is a general-purpose quality management standard applicable to any industry. AS9100 includes all ISO 9001 requirements but adds approximately 100 additional requirements specific to aerospace. Key differences include:
- First Article Inspection (FAI) requirements per AS9102
- Product safety and configuration management controls
- Enhanced requirements for control of external providers
- Mandatory counterfeit parts prevention programs
- On-time delivery performance tracking and reporting
A shop with only ISO 9001 may produce good parts, but they lack the aerospace-specific controls that AS9100 requires. For flight-critical or safety-critical components, this distinction matters.
How to Evaluate an AS9100 Certified Supplier
Not all certifications are equal in practice. When evaluating a potential supplier, consider these factors beyond the certificate itself:
- OASIS database listing: Verify the supplier appears in the IAQG OASIS database, which is the official registry of AS9100 certified organizations.
- Scope of certification: Check that the certificate covers the specific processes you need (e.g., CNC machining, turning, grinding).
- Track record: Ask about on-time delivery rates, reject rates, and customer satisfaction metrics. A good AS9100 shop tracks and can share these.
- Experience with your specifications: Certification is a baseline. Experience with your specific OEM requirements, materials, and tolerances is equally important.
The Bottom Line
AS9100 certification is not just a badge — it represents a comprehensive system of controls designed to deliver consistent, traceable, and reliable aerospace components. When you choose an AS9100 certified supplier, you are choosing a partner who has invested in the infrastructure to support your quality requirements.
At Tru-Tech Precision, our AS9100 Rev D certification reflects over 13 years of commitment to aerospace quality. If you have questions about how our quality system can support your next project, contact our team.