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AS/EN 9100 Certification Assurance: The 6 Most Common Failures

AS/EN 9100 certification assurance failure is concentrated in six finding categories that reflect the aerospace-specific requirements that go beyond ISO 9001. This whitepaper analyses each failure and the preparation programme that eliminates it.

Published May 2026·Aerospace & Defence·AS9100 Aerospace Quality Management Certification

Why AS/EN 9100 Is More Demanding Than ISO 9001

AS/EN 9100 extends ISO 9001 with aerospace-specific requirements that go significantly deeper into risk management, configuration management and first article inspection than most organisations anticipate. Organisations that approach AS/EN 9100 certification with ISO 9001 preparation intensity consistently encounter Stage 2 findings in areas where AS/EN 9100 goes beyond the ISO 9001 baseline.

IAQGInternational Aerospace Quality Group — governs AS/EN 9100 and the OASIS database that prime contractors reference before awarding contracts
48%of aerospace Tier 2 and Tier 3 suppliers fail AS/EN 9100 Stage 2 on first attempt — significantly higher than ISO 9001 failure rates
OASISCertification status database — lapses are visible to all subscribing primes, with direct commercial consequences
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About AjaCertX
AjaCertX is a specialist compliance, certification and assurance partner serving the aerospace, defence and space supply chain. Our Aerospace Assurance practice delivers AS/EN 9100 certification, NADCAP preparation and counterfeit parts prevention programmes.
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