• If you are unable to find a CAA or EASA equipment approval number for your radio equipment in the approved equipment list please refer to the CAA records database or ETSO Authorisations / EASA supplemental Type Certifications on the EASA website.

    Approval process

    There are three ways in which equipment may be granted approval:

    1. A European Technical Standard Order Authorisation (ETSOA) applied through and granted by European Aviation Safety Agency (EASA).
    2. A National Aviation Authority (NAA) approval, such as the CAA UK or a JTSO (Joint Technical Standard Order).
    3. Approval at the aircraft level as part of the Type Certificate or change to it (Supplemental Type Certificate, major/minor change).

    Notes on the approval process:

    • ETSOA or NAA equipment approval does not infer any approval to install onto an aircraft.
    • JTSOs and NAA equipment approvals issued prior to 28 September 2003 are equivalent to ETSOA.
    • NAA equipment approvals issued since 28 September 2003 are only valid for use on non-EASA aircraft.

    Apply and contact us

    Information on how to apply for an equipment approval can be found on the EASA website, or you can contact us.

  • Shared Service Centre
    Civil Aviation Authority
    Aviation House
    Gatwick Airport South
    West Sussex RH6 0YR

    E-mail: apply@caa.co.uk
    Telephone: 0330 022 1908 (Monday - Friday, 08:30 - 16:30)
    Fax: +44 (0) 1293 57 3996 or +44 (0) 1293 57 3779