AS9100 vs ISO 9001: 14 Essential Aerospace Additions (2026)

Last updated 19 September 2026

AS9100 vs ISO 9001 is not a choice between two standards so much as a question of how much is added to one. AS9100 Rev D contains the complete text of ISO 9001:2015 — every clause, in the same order, with the same numbering — and inserts aerospace, space and defence requirements around it, printed in bold italic so a reader can see exactly where the sector begins. An AS9100 certificate therefore covers ISO 9001 in full; an ISO 9001 certificate covers a fraction of AS9100.

What the additions ask for is the substance of the comparison: operational risk management, configuration management, product safety and counterfeit-part prevention as named processes; first article inspection; special process validation; a stricter grip on external providers and on nonconforming product; human factors in corrective action; and a certification scheme, run by the IAQG through the OASIS database, that fixes audit days and publishes results. This guide sets the two side by side, walks the additions clause by clause, explains who needs AS9100 and who is fine with ISO 9001, and describes the upgrade path — including what the pending IA9100 revision does and does not change.

AS9100 vs ISO 9001 at a glance

AS9100 vs ISO 9001 clause by clause: the additions

Two of the additions are large enough to be standards of their own. First article inspection follows AS9102, and our guide to first article inspection covers the three forms. Counterfeit-part prevention draws on AS5553 and AS6174, and counterfeit parts prevention under 8.1.4 covers the process.

AS9100 vs ISO 9001: who needs which

Our guide to AS9110 vs AS9120 covers the two variants; AS9100 certification cost covers what the IAQG scheme’s fixed audit days mean for the price.

AS9100 vs ISO 9001 in practice: upgrading from one to the other

1. Map the additions to the existing QMS. The bold italic text is the gap list; most ISO 9001 processes need extension rather than replacement.
2. Build the four named processes. Operational risk management, configuration management, product safety and counterfeit-part prevention each need a procedure, an owner and records.
3. Institute FAI, special process validation and tool control. These are the production-floor additions and take the longest.
4. Rewrite supplier control. Flow-down, performance monitoring, right of access and counterfeit-avoidance requirements into every purchase order.
5. Extend nonconformance and corrective action. Customer notification, disposition authority, human factors in root cause.
6. Register in OASIS and choose an accredited aerospace CB. The scheme, not the CB, sets the audit days; the CB sets the rate.
7. Plan for IA9100. The revision keeps clauses 4–10, rebases on ISO 9001:2026, and is expected to expand product safety, counterfeit parts and sub-tier control and add quality culture and ethics and an APQP link. Our guide to IA9100 covers what is known.

Frequently asked questions

What is the difference in AS9100 vs ISO 9001?
AS9100 contains ISO 9001:2015 in full and adds aviation, space and defence requirements: operational risk management, configuration management, product safety, counterfeit-part prevention, first article inspection, special process validation, stricter external provider and nonconformance control, human factors in corrective action, and a certification scheme run by the IAQG with fixed audit days and results published in OASIS.

Does AS9100 certification include ISO 9001?
Yes. Because the full ISO 9001 text is inside AS9100, an AS9100-certified QMS meets ISO 9001, and certification bodies commonly issue both certificates from the same audit. The reverse is not true.

Can we hold ISO 9001 and supply aerospace customers?
If the customer’s flow-down allows it. Many primes accept ISO 9001 from suppliers of non-critical items; suppliers of flight or safety-critical parts, or those on an approved supplier list that specifies AS9100, need the aerospace standard.

Is AS9100 harder to audit?
The audit is longer and more prescribed: AS9104/1 fixes the days by headcount, auditors are authenticated under the IAQG scheme, and results are reported into OASIS where customers can see them. The additions also give auditors more specific requirements to test.

What happens with IA9100 and ISO 9001:2026?
ISO 9001:2026 was published in September 2026. IA9100, the renamed successor to AS9100 Rev D rebased on it, is targeted for late 2026 with a transition period to follow. AS9100 Rev D remains the certifiable standard until the IAQG publishes the transition rules.

Where this leaves you

Read AS9100 vs ISO 9001 as ISO 9001 plus a bold-italic layer: the same ten clauses, with the sector’s processes, records and scheme added. If your customers are aerospace, space or defence primes, the layer is not optional; build it onto the ISO 9001 system you have, register in OASIS, and keep one eye on IA9100.

References

• IAQG — International Aerospace Quality Group — The 9100-series standards, the ICOP certification scheme and the OASIS database.
• IAQG — IA9100 Key Changes, clause view — The clause-by-clause comparison for the pending revision, including 8.1.3 and 8.1.4 NOTE items becoming requirements.
• ISO 9001 — Quality management systems — Requirements (iso.org) — The base standard; the 2026 edition was published September 2026.

More on AS9100

• AS9100 vs ISO 9001 — you are here
• Aerospace quality management: the AS9100 family
• IA9100: the 2026 revision
• AS9100 certification cost
• First article inspection under AS9102
• AS9110 vs AS9120

The quality manual with the AS9100 additions marked, the operational risk, configuration management, product safety and counterfeit-part procedures, the FAI and special process records and the supplier flow-down templates are in the AS 9100/9110/9120 Aerospace QMS Toolkit, or start with the free templates.