STANAG 4686 assessment procedures for defensive aid suites

What it is

STANAG 4686 is the NATO Standardization Agreement covering procedures for assessing defensive aid suites (DAS) fitted to land vehicles, the equipment that protects a vehicle from attack. This is Edition 3, promulgated 17 November 2021, superseding Edition 2 of 9 November 2018.

A STANAG is not the specification

A STANAG is the agreement by which NATO nations commit to implement a standard, not the technical specification itself. STANAG 4686's own text is short and administrative: an aim, a set of interoperability requirements, and the ratification, implementation and reporting machinery. The assessment procedures themselves are specified in a separate publication, AEP-62, which the STANAG names as the standard participating nations "agree to implement" across three volumes: "AEP-62, Vol. I (Part I), II, III, V and VII, Edition C", "AEP-62, Vol. I (Part II), Edition B", and "AEP-62, Vol. VI, Edition A". Anyone actually running a DAS assessment needs AEP-62's own text, not this cover agreement.

What it commits nations to

The stated aim is interoperability: to let nations "develop, evaluate and upgrade their DAS capabilities and test against a given set of threats" in a standardized way. The document names five aspects this covers: threat database, performance, collateral damage, system safety and integration. It is explicit about a limit worth noting because a reader might assume otherwise: the AEP-62 procedures "are not intended to represent a final performance assessment for DAS fielding", and a nation will still "require to consult additional standards and most likely test for nation-specific DAS requirements" before a DAS is fielded.

Who it binds, and how

STANAG 4686 binds nations, not suppliers. It is effective "upon receipt for use by the participating nations and NATO bodies", and it becomes binding on a given nation through ratification, which NATO records in the NATO Standardization Document Database (NSDD). Implementation is a separate step: the STANAG "will be considered implemented when national Authorities (NAs) requires the use of AEP-62 whenever a DAS is tested and evaluated". Each nation selects "an organization authorized to assign an NA for the exploitation of this STANAG and its associated AEPs", and that NA "must have the means to provide oversight and guidance for testing and the authority to enforce decisions that will meet the intent of this document." Allies and NATO bodies then report implementation through NATO's electronic reporting tool; partner nations are only invited to do the same. A supplier or vehicle integrator meets STANAG 4686, or the AEP-62 procedures it covers, only where a tender or contract says so - the document itself sets no obligation reaching a supplier directly, and it names no NATO-wide effective date (its own "NATO Effective Date (NED)" field reads "Not applicable").

How it's evaluated

STANAG 4686 describes no certification scheme and no third-party audit. It describes national oversight: each nation's NA holds "the authority to enforce decisions that will meet the intent of this document", and may accept deviations from the AEP-62 procedures where they are "judged equivalent and well documented". The AEP-62 assessment itself is "not intended to represent a final performance assessment for DAS fielding" - a further, nation-specific assessment sits outside this STANAG entirely. Nobody is "STANAG 4686 certified", and the document never uses that language.

Standards it references

STANAG 4686 covers AEP-62, the Allied Engineering Publication that carries the actual DAS assessment procedures, across volumes at Edition C, Edition B and Edition A. Its "Other Related Documents" also list STANAG 4569 (protection levels for occupants of armoured vehicles), AEP-55 and AVPP-01, all of which inform rather than bind through this agreement.

Standards it references

• STANAG 4569Background
• AEP-55Background
• AVPP-01Background