Do I Need AS9100 to Sell to Aerospace Primes?

By Clayton Kuehl | The QMS Collective, LLC

Short answer: increasingly, yes. But the full picture is more nuanced than a blanket requirement — and understanding it will help you decide whether and when to pursue certification.

What the Primes Actually Require

Major aerospace prime contractors — Boeing, Lockheed Martin, Raytheon, Northrop Grumman, and others — have supplier qualification processes that typically include quality management system requirements. For most suppliers providing hardware, assemblies, or critical components, AS9100 certification is either mandatory or a significant competitive advantage.

Here’s how it typically works in practice:

•       Tier 1 and Tier 2 suppliers providing flight-critical hardware are almost universally required to hold AS9100 Rev D certification from an accredited certification body. This isn’t a preference — it’s a contract requirement.

•       Machining and fabrication shops supplying to Tier 1 or Tier 2 contractors are increasingly required to be AS9100 certified. Ten years ago, ISO 9001 was often acceptable. Today, the standard has moved.

•       Suppliers of raw materials, standard hardware, or non-flight commodities may find that ISO 9001 is still sufficient — though AS9100 is increasingly preferred and sometimes required even here.

Why the Requirements Have Tightened

Several factors have pushed AS9100 requirements further down the supply chain over the past decade:

Supply Chain Risk Management

High-profile quality escapes and supply chain failures have driven primes to push quality requirements deeper into their supplier base. AS9100 provides a documented, auditable framework that ISO 9001 alone doesn’t fully address for aerospace applications.

Counterfeit Parts Prevention

AS9100 includes specific requirements around counterfeit parts prevention that ISO 9001 does not. For primes managing complex supply chains, this is a meaningful distinction.

Government and Regulatory Pressure

Defense contracts often flow down quality requirements from FAR/DFARS regulations, which increasingly reference AS9100-level requirements for suppliers of critical hardware.

The Upcoming IA9100 Transition

The aerospace standard is expected to be updated and rebranded as IA9100 around late 2026, aligning with ISO 9001:2026. Primes are aware of this transition and supplier qualification requirements will reflect it.

How to Find Out What Your Specific Customer Requires

The most direct path: read your customer’s supplier quality requirements (SQR) or supplier qualification manual. Most large primes publish these or provide them during the qualification process. Look for language referencing:

•       AS9100 Rev D certification

•       OASIS database registration (the official AS9100 certification registry)

•       Flow-down quality requirements

•       First article inspection (FAI) requirements per AS9102

If you’re pursuing a new customer relationship, ask their supplier quality team directly during the qualification conversation. They’ll tell you what’s required — and often what’s preferred even if not strictly required.

What If You’re Not Certified Yet — Can You Still Pursue Business?

Sometimes. A few realistic scenarios:

You’re Already in Conversations with a Prime

Some primes will qualify suppliers conditionally, with certification required within a defined timeframe.

You’re a Sub to a Tier 1 Who Is AS9100 Certified

Your customer may flow down quality requirements to you contractually without requiring you to hold independent certification — though they’ll likely audit you themselves. This is a stepping stone, not a permanent alternative.

You’re Supplying Non-Critical Commodities

If your work doesn’t touch flight-critical hardware, the certification bar may be lower. Know what category your products fall into.

The honest reality: if your growth strategy involves winning more aerospace business, AS9100 certification is not a question of if but when. Starting the process before a specific contract requires it puts you in a stronger negotiating position and removes a barrier that your competitors may not have cleared yet.

The Competitive Angle Worth Considering

Certification isn’t just about meeting a requirement — it’s a signal to prospective customers that your shop operates with documented, auditable processes. For a small shop competing against other small shops, holding AS9100 certification when your competitor doesn’t can be the deciding factor in a sourcing decision.

Primes and Tier 1 contractors prefer to consolidate their supplier base with qualified vendors. Getting certified positions you to be on approved supplier lists that are harder to get onto as requirements tighten.

The Bottom Line

If you’re selling to aerospace primes or Tier 1 contractors — or plan to — AS9100 certification is effectively a prerequisite for serious, sustained business in that space. The question isn’t really whether you need it. It’s when the return on that investment makes sense relative to the contracts you’re pursuing.

For most small shops I’ve worked with, that answer is: sooner than you think.

If this raised questions about your own quality system, I’m happy to talk it through. I offer a free 30-minute introductory call — no obligation, no pitch. Just a conversation about where you are and what might help.  Schedule a Call →

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