Registrar Selection - It's About the Auditor!

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How to Select an AS9100:D Registrar

A Practical Guide for Small Aerospace Organizations

By Clayton Kuehl  |  The QMS Collective, LLC

Choosing the right registrar is one of the most consequential decisions in your AS9100:D certification journey — and one that is consistently underestimated. The wrong registrar does not just cost money; it can produce an audit experience that generates friction instead of value, and a certificate that does not accurately reflect what your organization does.

This guide walks through the selection process with small aerospace organizations in mind — shops that need a practical, no-nonsense path to certification without the overhead of a large quality department.

Why Registrar Selection Matters More Than Most People Think

A registrar is not just a rubber stamp. You are choosing a multi-year audit partner. The auditor assigned to your account will evaluate your system year over year. Getting this decision right from the start saves time, money, and significant frustration down the road.

Start Here: The Auditor Question

Before walking through the selection process, it is worth addressing the single most important factor in a successful certification experience: auditor quality and fit.

The best aerospace auditors evaluate whether a QMS meets the intent and requirements of AS9100:D — not whether it mirrors how a large Tier 1 manufacturer implements the standard. For small organizations, this distinction is critical. Your QMS may look fundamentally different from a high-volume production shop's system, and it should. An auditor who cannot evaluate a system objectively — who defaults to "this is not how I would do it" rather than "does this meet the requirement's intent" — generates findings that do not improve anything and creates recurring friction across every surveillance cycle.

Ask specifically about auditor experience with organizations similar in size and operational profile to yours before selecting any registrar. It is a completely legitimate question, and how a registrar responds to it tells you something important about how they operate.

Step-by-Step: The Selection Process 

1	Verify Accreditation and OASIS Listing Before anything else, confirm the registrar is accredited by a recognized body — in the US, that is ANAB (ANSI National Accreditation Board) — and is actively listed in the IAQG OASIS database as an authorized aerospace certification body. Only OASIS-listed registrars can issue a certificate the aerospace industry will recognize. This is non-negotiable and takes five minutes to verify at oasis.iaqg.org.
2	Define Your Certification Scope — Get This Right First Scope definition is where small organizations most often stumble. Your scope must accurately reflect what your business actually does. A precisely written scope keeps audit friction low, reduces the risk of out-of-scope findings, and communicates your capabilities clearly to customers who verify the certificate. Do not borrow a scope from a competitor or copy a template. Have it reviewed by a knowledgeable advisor before the Stage 1 audit.
3	Research and Shortlist Registrars Search OASIS for accredited certification bodies whose experience aligns with your organization type. Look beyond name recognition — review their track record with organizations similar to yours in size and operational profile. Target two to three registrars for comparison. Bigger is not always better. The right fit matters more than brand familiarity.
4	Issue a Concise Request for Quote Send each shortlisted registrar a brief RFQ that includes your organizational profile and proposed certification scope, number of locations, approximate headcount, target certification date, and any known customer-specific requirements. Request itemized pricing for Stage 1, Stage 2, and the full three-year surveillance cycle. Ask explicitly about remote audit options — flexibility matters when you are managing a lean operation and a tight calendar.
5	Evaluate Auditor Competence — Not Just Price This is the step that gets underweighted most often, and the one that matters most day-to-day. The best aerospace auditors evaluate whether your QMS meets the intent and requirements of AS9100:D — not whether it mirrors how a large Tier 1 manufacturer implements the standard. Ask each registrar directly about auditor experience with organizations similar to yours. Request a reference from a comparable client. A slightly higher quote with the right auditor is almost always the better long-term investment.
6	Select, Contract, and Schedule Notify your selected registrar, execute the certification agreement, and confirm the assigned auditor's background before finalizing — registrars can often accommodate a request for relevant experience. Schedule the Stage 1 readiness review and work backward from your target certification date to plan internal preparation milestones. Retain records of how and why you selected your registrar; customers and auditors may ask.

Key Success Factors

Passing your audit is only part of the goal. The organizations that get the most long-term value from AS9100:D certification treat these factors as non-negotiable from day one:

Factor	What It Means for You
Start Early	Budget at least six months from the selection decision to your target certification date. Compressed timelines add stress and increase the risk of avoidable findings.
Three-Year Cycle Cost	Plan and budget for the full certification cycle upfront — Stage 1, Stage 2, and two annual surveillance audits. The initial quote rarely reflects the total cost.
Scope Language	Have your proposed scope reviewed by a qualified advisor before the Stage 1 audit. Refining language before the auditor arrives is far less costly than revising it during or after.
Auditor Fit	It is entirely reasonable to request an auditor with relevant experience in your type of organization. You are entering a multi-year relationship — the fit matters.
OASIS Listing Accuracy	Once certified, your certificate and scope are publicly visible in OASIS. Aerospace customers and prime contractors check it. Accuracy and currency are not optional.
Internal Preparation	Certification readiness starts before the registrar is selected. A gap assessment against AS9100:D requirements surfaces the work needed and sets realistic timelines.

A Closer Look: Defining Your Certification Scope

Scope definition deserves its own focus because it affects everything downstream: how audits are conducted, what findings are valid, how customers interpret the certificate, and how your organization appears in the IAQG OASIS database. Get it wrong and it creates recurring problems. Get it right and it becomes an accurate, customer-facing statement of what you do and stand behind.

A well-constructed scope is specific and accurate — not aspirational, not borrowed from another organization's certificate, and not padded with activities you do not actually perform.

Principles to Follow

•       Write to reality, not aspiration. Auditors audit to the scope as written.

•       Do not use language that implies capabilities your organization does not have.

•       Exclusions are legitimate. Any AS9100:D clause that genuinely does not apply to your operations can be formally excluded — but must be documented and justified.

•       Have the proposed scope reviewed by a knowledgeable advisor before the Stage 1 audit. Revising scope language mid-process is expensive and disruptive.

IAQG OASIS Database — Verify Before You Engage

OASIS is the authoritative source for registrar verification. Only registrars actively listed there are authorized to issue a valid AS9100:D certificate. Once certified, your certificate and scope will be publicly visible in OASIS — aerospace customers and prime contractors check it routinely. Accuracy and currency are not optional. Access OASIS at: oasis.iaqg.org

Ready to Talk Through Your Certification Path?

Registrar selection is just one piece of the AS9100:D certification process. If you are early in your planning and want an honest conversation about where your organization stands, what the path to certification looks like, and what it will realistically take to get there — I am happy to talk.

I offer a free 30-minute introductory call. No obligation, no pitch. Just a practical conversation about your quality system and what might help.

Schedule your free introductory call at www.theqmscollective.com or reach me directly at clayton.kuehl@theqmscollective.com  |  (406) 677-1036

Clayton Kuehl is the founder of The QMS Collective, LLC, with nearly 30 years of experience in aerospace quality management systems. He specializes in AS9100 and ISO 9001 certification for small aerospace organizations — combining deep hands-on QMS expertise with intelligent automation tools that reduce the time and friction of building a system that actually works.