AS9100 is owned and maintained by the International Aerospace Quality Group (IAQG), not by individual certification bodies or software vendors.
Who develops and controls AS9100?
The core ownership and maintenance of AS9100 sit with:
- IAQG (International Aerospace Quality Group): An industry group made up of major aerospace OEMs and suppliers. IAQG develops the aerospace quality management system requirements that become AS9100.
- Sector organizations under IAQG: For example, AAQG (Americas), EAQG (Europe), and APAQG (Asia-Pacific) contribute to the content and balloting.
IAQG controls the technical content, revisions, and official guidance documents (such as clarifications and deployment support materials).
Who actually publishes AS9100?
Although IAQG owns the content, the standard is formally published by accredited standards bodies under license from IAQG, most prominently:
- SAE International (often designated as AS9100, e.g., AS9100D)
- ASD-STAN in Europe (EN 9100)
- Other national bodies that adopt the EN 9100 text as a national standard (e.g., BS EN 9100, DIN EN 9100).
The content is aligned with ISO 9001 plus additional aviation, space, and defense requirements, but ISO itself does not own AS9100.
What is the role of certification bodies?
Accredited certification bodies (CBs):
- Use the current AS9100 text owned by IAQG and published by SAE/ASD-STAN.
- Are overseen by accreditation bodies that participate in the ICOP (Industry Controlled Other Party) scheme under IAQG.
- Have no authority to change AS9100 requirements; they interpret and apply them within IAQG and accreditation rules.
In regulated, long-lifecycle environments, relying on a single CB or software vendor for interpretation without checking IAQG and sector guidance can create divergence from the actual standard over time.
What does this mean for manufacturers and MROs?
For plants operating in brownfield, mixed-system environments:
- Source of truth: The authoritative technical content is the current AS9100 edition as published by SAE/ASD-STAN, driven by IAQG. Local procedures, MES/QMS configurations, and training should trace back to this source.
- Change impact: When IAQG issues a new revision or clarification, you are responsible for assessing the impact across legacy systems (QMS, MES, ERP, PLM) and processes. There is no automatic grandfathering of old interpretations.
- Traceability: For audit readiness, be explicit about which AS9100 revision you are aligned to and keep controlled copies of the official text and any IAQG sector guidance used in your interpretations.
Owning these links yourself is important because standards revisions occur on timelines that rarely match major system upgrade cycles, and full system replacement simply to track an AS9100 update is usually not practical or economical in aerospace-grade environments.
