What Is the Difference Between NADCAP and AS9100?

Feb 20, 2026 | Uncategorized

For aerospace manufacturers like Composites Universal Group, both NADCAP and AS9100 certifications play a critical role in ensuring product quality, safety, and regulatory compliance—but they serve very different purposes within the aerospace supply chain.


🛠️ What Is AS9100?

AS9100 is a Quality Management System (QMS) standard specifically developed for the aerospace industry. It builds upon ISO 9001, adding aerospace-specific requirements related to:

  • Risk management
  • Product traceability
  • Configuration control
  • Supplier management
  • Preventative and corrective actions
  • Safety and reliability standards

AS9100 focuses on how your entire organization operates, ensuring that your processes—from engineering and procurement to manufacturing and final inspection—are documented, controlled, and continuously improved.

➡️ In short:
AS9100 certifies your company’s overall quality management system.


What Is NADCAP?

NADCAP (National Aerospace and Defense Contractors Accreditation Program) is a process-level accreditation, not a company-wide quality system.

It is administered by the Performance Review Institute (PRI) and evaluates specific special manufacturing processes such as:

  • Composites manufacturing
  • Non-destructive testing (NDT)
  • Heat treating
  • Chemical processing
  • Welding
  • Coatings
  • Materials testing

NADCAP audits go deeper into the technical execution of these processes, verifying that they meet stringent aerospace prime contractor standards from companies like Boeing, Lockheed Martin, and Northrop Grumman.

➡️ In short:
NADCAP accredits how specific critical processes are performed.


NADCAP vs. AS9100: Key Differences

FeatureAS9100NADCAP
ScopeCompany-wideProcess-specific
FocusQuality Management SystemSpecial Process Validation
Based OnISO 9001Aerospace Prime Requirements
Audit TypeSystem AuditTechnical Process Audit
CoverageAll operationsIndividual processes (e.g., composites, NDT)
Required ByMany aerospace OEMsOften required for special processes
Certification BodyAccredited RegistrarsPRI (Performance Review Institute)

Why Aerospace OEMs Often Require Both

In aerospace and defense manufacturing, having AS9100 certification demonstrates that your organization follows structured quality management practices, while NADCAP accreditation proves that your critical manufacturing processes—like composite layup or NDT—are performed to the highest industry standards.

For suppliers like Composites Universal Group that specialize in carbon fiber composites and advanced manufacturing, holding both credentials:

  • Increases eligibility for aerospace and defense contracts
  • Demonstrates compliance with OEM requirements
  • Reduces the need for redundant customer audits
  • Confirms both organizational quality and process-level precision

Bottom Line

  • AS9100 = Quality Management System (How your company runs)
  • NADCAP = Special Process Accreditation (How critical processes are performed)

Together, they form the foundation of trust and technical excellence required to manufacture high-performance aerospace composite components.

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