GM1 21.A.124A and 21.A.134A Means of compliance

CAA ORS9 Decision No. 40

GENERAL

  1. Acceptable means of compliance (AMC), as referred to in Article 76(3) of UK Regulation (EU) 2018/1139, are a tool to standardise the demonstration of compliance with, and facilitate the verification activities of the CAA in relation to, that Regulation and regulations made under it. AMC are published by the CAA to achieve those objectives.

  2. If an organisation wishes to use other means to comply with UK Regulation (EU) 2018/1139 and the regulation made under it, which are different from the AMC that are published by the CAA, that organisation may need to demonstrate compliance by using alternative means of compliance (AltMoC) that are established:

    1. by the CAA (see GM1 21.B.115 and GM1 21.B.215); or

    2. by that organisation and approved by the CAA (see point (c)).

    An AltMoC does not allow deviation from UK Regulation (EU) 2018/1139 and regulations made under it.

  3. AltMoC that are established by an organisation and approved by the CAA.

    An organisation that wishes to use a different means of compliance to the one published by the CAA can propose an AltMoC to the CAA and use it only once the CAA approves it. In that case, the organisation is responsible for demonstrating how that AltMoC establishes compliance with the regulation.

    The approval of an AltMoC is granted to the organisation by the CAA on an individual basis and is restricted to that specific organisation. Other organisations that wish to use the same AltMoC should go through the AltMoC process (i.e. demonstrate how that AltMoC establishes compliance with the regulation) and obtain individual approval from the CAA.