Ongoing discussions within the SWIM communities of interest

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Ongoing discussions within the SWIM communities of interest

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Task outline

Help in assessing conformance to the spec: what is needed; how is it assessed; and why.

Status = handbook updated on 14/6/19


discussed during 2019-05-23 SSCONE F2F

  • See presentation and comments.

comment from 2019-01-28 SSCONE webex

  • There should be a focus on interoperability. In particular: Is the service sufficiently described? Is the description valid? Is it complete?
  • Coordination is required with with SWIM Governance IP to get someone to explain SWIM Governance IP view on SWIM compliance. (status: on-going)


Excerpts from the specification

1.x Conventions

The following conventions are used in this EUROCONTROL specification:

  • ‘shall’- indicates a requirement that must be implemented to provide conformity with this specification;
  • ‘should’ - indicates a requirement that is recommended to achieve the best possible implementation of this specification; and
  • ‘may’ - indicates an option.

Annex B to this specification provides the conformity checklist indicating, per requirement, the level
of implementation to be achieved – see tables 4 and 5.

2. Conformance

The conformity checklist table is available in Annex B. It is provided in support of assessing
conformance with this specification.

ANNEX B – Conformity Checklist

This annex summarises the requirements to be met when assessing conformity to this

Table 5 lists each requirement in the specification using its identifier and title. It then states the
level of implementation to be achieved (see Table 4). In some cases, the implementation is
conditional which means that the requirement is to be implemented when the condition applies.

Level of ImplementationOperative verb used in the requirement
M = Mandatoryshall
R = Recommendedshould
O = Optionalmay

Table 4 – Level of implementation

Sources of inspiration


According to the International Standards Organization (ISO), "conformity" is the fulfillment of a requirement.

ISO 9000:2000 said "conformance" is basically synonymous with "conformity," but deprecated. In other words, obsolete.

In short, when it comes to international standards, the term "conformance" is obsolete. The term used is "conformity" (and "nonconformity").

In the United States, however, the Federal Aviation Administration (FAA) still makes wide use of "conformance" and "nonconformance". It is synonymous with conformity. Some airlines favor "conformity" in their manuals, while others use "conformance". Both are correct. Both indicate the fulfillment of an internal requirement.

Some of the standards above once defined "compliance", but no longer. It basically meant meeting the requirements of a relevant regulation. The dictionary says it is the disposition or tendency to yield to the will of others. In other words, compliance is viewed as externally imposed. For example, an airline complies with a governing body's (FAA, IATA, etc.) regulations, and conforms to its manuals.

From posted by John Spacey, September 01, 2017

Conformance is voluntary adherence to a standard, rule, specification, requirement, design, process or practice.

Compliance is forced adherence to a law, regulation, rule, process or practice.


Conformance - Choosing to do something in a recognised way (following standards such as ISO 9001 or recognised methods such as agreed test methods for ring tests under ISO 17025).

Compliance - Doing what you are told (i.e. abiding by the law, meeting legislative requirements).

Justification for the confusion- If someone mandates you meet the requirements of a standard or test method then conformance becomes compliance (i.e. your conformity is required in order for you to comply).

Other references:





Tooling (Related Supporting Material)




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