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STANAG 4762
NATO nations ratifying and implementing safety and suitability for service assessment testing requirements for medium calibre ammunition from 20 mm to 40 mm
STANAG 4762 is NATO's agreement by which member nations implement AAS3P-21 (Edition A), the Allied Publication covering safety and suitability for service assessment testing of medium calibre ammunition from 20 mm to 40 mm.
STANAG 4762 is the NATO standardization agreement that brings AAS3P-21 into force, Edition A, the Allied Publication covering safety and suitability for service (S3) assessment testing of medium calibre ammunition from 20 mm to 40 mm. A STANAG is not itself a technical specification: it is the agreement by which NATO nations commit to implement one, and the actual assessment testing content sits in the Allied Publication it covers. The STANAG's own stated purpose is "to enable nations to conduct planning and implementation of S3 assessment testing of medium calibre ammunition from 20 mm to 40 mm to enable appropriate evidence to be collected covering the entire life cycle," so that the safety test programme can provide data to demonstrate the munition will be "safe for use." Read plainly, that means the STANAG exists so NATO nations test and assess medium calibre ammunition for safety and suitability for service on a shared enough basis, not to set out the test methods themselves.
This is Edition 1 (AAS3P-21, Edition A), promulgated 27 May 2025. It does not supersede any document.
The mechanism that matters here: a STANAG binds a nation, not a supplier. Nations "are invited to examine their ratification of the STANAG and, if they have not already done so, advise the NSO of their intention regarding its ratification and implementation." "This STANAG is effective upon receipt for use by the participating nations and NATO bodies," and once implemented, "Allies shall provide implementation details through the electronic reporting tool." A supplier meets AAS3P-21 only where a contract or a tasking brings it in by reference, not because the STANAG exists.
Ratifying nations agree to "follow the guidance given in AAS3P-21, Edition A, when defining the safety and suitability for service assessment testing of medium calibre ammunition from 20 mm to 40 mm." They also agree to share the relevant safety and reliability information for the ammunition on demand when transferring munitions to other NATO nations, so a nation receiving munitions from an ally has the safety and reliability evidence behind them. "Allies and NATO bodies shall provide implementation details through the electronic reporting tool (e-Reporting)," and "partner nations are invited to provide their implementation details through the electronic reporting tool (e-Reporting)" the same way.
"This STANAG is to be reviewed in accordance with AAP-03. The result of the review is to be recorded within the NSDD." That is a standardization review, run by NATO's own machinery, not a certification: the document names no accredited body, no notified body, and no audit against it as such. The safety test programme AAS3P-21 defines is built to produce evidence about the munition itself, not to accredit the organisation that built or tested it.
STANAG 4762 and AAS3P-21 describe a testing and reporting discipline built around a munition programme, not a management system: the S3 assessment testing itself, and the safety and reliability data shared when munitions move between nations, is work carried out in test planning and programme records, not in software.
What ComplyTrain holds is the paperwork trail around that work: version-controlled procedures for how a programme plans and evidences S3 assessment testing, records of the safety and reliability information produced under AAS3P-21(A), and the trail an internal or customer audit asks for afterward, including which edition of STANAG 4762 and AAS3P-21 a programme worked against.
ComplyTrain does not run S3 assessment testing, does not decide whether a round of ammunition is fit for service, and does not replace the ratification and reporting nations carry out themselves through the NSDD.
The applicable tier here, and whatever else it comes with, is set by the contract and the customer's quality clause. If you are working out what sits alongside STANAG 4762, the standards explorer covers the related NATO documents, and we are glad to talk through what that means in practice.
Tell us how you need to work with STANAG 4762 and what you need from it. We will come back to you about what ComplyTrain can do.
Thank you. Your list is on its way to your inbox, and we will come back to you on what working with these standards in ComplyTrain involves, usually within one business day.
Not in general. It binds a nation once that nation ratifies it, and it reaches a supplier only where a contract or a tender names AAS3P-21 or this STANAG. Whether it applies to a given programme is set by the tasking or contract in front of you, not by the STANAG alone.
STANAG 4762 is the agreement: the letter of promulgation, the ratification record, and the reporting and review machinery. AAS3P-21, Edition A is the actual specification for safety and suitability for service (S3) assessment testing of medium calibre ammunition from 20 mm to 40 mm that the STANAG brings into force. The STANAG is the cover; AAS3P-21 is the content.
Edition 1 (AAS3P-21, Edition A), promulgated 27 May 2025. It does not supersede any document.
No. The agreement sets up a national assessment and reporting process around a munition, not an accreditation scheme for a company, and no accredited body or NATO body issues a certificate under it. ComplyTrain does not claim a certification here either.
STANAG 4762's own text names STANAG 4629 as a related document: the equivalent S3 assessment agreement covering AAS3P-01 for non-nuclear munitions generally, where STANAG 4762 covers medium calibre ammunition specifically. It informs the STANAG rather than being required by it.
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