In the aerospace supply chain, AS9100 certification opens doors- plain and simple. What’s less evident is the significance behind certification, specifically who trained the auditors that maintain any given quality system. Prime contractors and their teams dedicated to supplier qualification don’t stop asking questions after seeing a certificate on the wall. They’re looking for specific evidence that infrastructure was built by people who truly understand the standard. The training behind your auditors is the largest part of that narrative.
What Primes Are Actually Evaluating in Supplier Qualification
In the long process of an aerospace prime qualifying a supplier, AS9100 certification is typically the starting line, not a differentiator. What creates differentiation is the depth and credibility of the quality system behind the certificate. Primes and their supplier quality engineers examine things such as internal audit programs, corrective action history, management review records, and competence documentation. Each area offers a different perspective as to whether the people running the quality system were trained to a standard that the scheme recognizes.
An internal audit program run by someone with a certificate from an unrecognized provider looks different on paper than one run by a Probitas-authenticated Lead Auditor. The audit findings are different. The depth of documented evidence is different. And when a prime’s supplier quality engineer sits across the table from your quality manager during a supplier audit, the conversation goes differently depending on which one it is.
The IAQG Scheme and Why Recognition Matters
The IAQG certification scheme is the framework that governs how AS9100 certification audits are conducted, how auditors are credentialed, and how training providers are approved. Following IAQG Resolution 176, auditor authentication is now centralized through IAQG Authentication directly, replacing the regional Auditor Authentication Body model. Only auditors recognized through that system are authorized to perform audits within the scheme.
Training that contributes toward IAQG auditor authentication must come from a provider approved through an IAQG-recognized Training Provider Approval Body. Probitas holds that role for a significant portion of the U.S. aerospace training market. A Lead Auditor course from a provider without that recognition doesn’t satisfy the training requirements for authentication, which means it doesn’t carry the same weight when a prime or certification body is evaluating the people behind a supplier’s quality system.
Depth of Training Signals Depth of Competence
An auditor whose training stops at the Lead Auditor credential knows how to conduct an audit. An auditor who has also trained in AS9102 Rev C First Article Inspection, counterfeit parts prevention under AS5553 and AS6174, APQP and PPAP for aerospace, PFMEA and control plan risk requirements, and ISO 31000 aerospace risk management knows the territory an aerospace audit actually covers.
Primes building complex supply chains aren’t just looking for certified suppliers. They’re looking for suppliers whose quality teams can engage substantively on the topics that matter most in aerospace manufacturing. The depth of training behind your auditors signals the depth of understanding your quality system reflects. That signal reaches prime contractor supplier quality teams whether it’s ever explicitly discussed or not.
How APEX QA Helps
APEX QA is a Probitas-recognized training provider offering AS9100 Rev D and ISO 9001 Lead Auditor and Internal Auditor courses in live online and in-person formats, with CPD hours recognized for IAQG auditor authentication. Beyond the core credentials, APEX offers a full aerospace training catalog covering AS9102 Rev C First Article Inspection, counterfeit parts prevention with AS5553 and AS6174, AS9145 APQP and PPAP, AS13004 PFMEA and Control Plans, Core Tools, ISO 31000 Aerospace Risk Management, GD&T, ITAR, AS13100, and ISO 9001 and IA9100 Transition Training. The auditors your quality system depends on deserve training that the scheme recognizes and the supply chain respects.
AS9100 Auditor Training and Aerospace Supply Chain Credibility: Common Questions Answered
Why do aerospace primes care about auditor training credentials?
Prime contractor supplier qualification teams evaluate the depth and credibility of a supplier’s quality system. The training behind internal auditors directly influences audit program quality, corrective action depth, and documented evidence, all of which primes assess during supplier qualification.
What makes an AS9100 auditor training certificate recognized within the IAQG scheme?
The course must be delivered by a provider approved through an IAQG-recognized Training Provider Approval Body such as Probitas. Certificates from unrecognized providers don’t satisfy IAQG auditor authentication training requirements.
What is the difference between IAQG-recognized training and general AS9100 training?
IAQG-recognized training satisfies the scheme’s training requirements for auditor authentication. General AS9100 training may provide useful knowledge but doesn’t count toward formal authentication within the IAQG certification scheme.
Does auditor training depth matter beyond the Lead Auditor credential?
Auditors working in aerospace supply chains regularly encounter first article inspection, counterfeit parts prevention, APQP, PFMEA, and risk management. Training in those areas strengthens the competence an auditor brings to supplier qualification conversations and internal audit programs.
How does IAQG Authentication affect auditor training requirements?
Following Resolution 176, IAQG Authentication is now the sole authority for auditor credentialing within the scheme. Training from a Probitas-recognized provider remains the pathway to satisfying the training requirements for authentication through that system.



