• Pre-requisites

    Organisations should have their principal place of business in the UK.

    Organisations with their principal place of business outside the UK should apply for a UK Third Country Approval.

    Organisations needing to change a Registered Company or Limited Liability Partnership (LLP) Number will require a new initial approval as it cannot be classed as a change to an existing approval. See CAP 562, Leaflet C-30 for further information.

    If adding an aircraft which falls within a generic aircraft group that you already hold on your approval certificate (e.g. Piston engine aeroplanes – metal structure not exceeding 5700 kg), then you should email an exposition amendment to apply@caa.co.uk or attach/upload the draft exposition to the online application form (where applicable). Please do not send to your surveyor directly as it will delay your application processing.

  • You can complete the remove ratings and facilities form provided that these are the only changes you are making to the approval. There is no charge for this service but you will need to provide a copy of your amended exposition.

    To add or remove temporary or permanent Line Stations (Line Maintenance Facilities) to/from an existing approval, please use CAA Form SRG 1761.

    SRG 1761 is not required for Occasional Line Maintenance (less than ten consecutive days).                     

    For further information, please refer to:

    This sets out how Part-145 organisations may establish temporary line stations in accordance with approved procedures. This will enable the CAA to plan its oversight accordingly.

    The Information Notice also includes information to clarify:

    • the difference between occasional line maintenance and a temporary line station
    • how organisations may establish a temporary line station without requiring a CAA Surveyor to audit the location before commencing maintenance.

  • Changes to the key personnel in an organisation must be notified to CAA.

    Please ensure that the CAA policy on fitness of character is fully understood before submission of an application.

    You can add or remove/change the details of one or several people, including identifying their role(s) and the types of approval(s) they have responsibility for, by completing the Change of Accountable Manager or Nominated Postholder form. This form caters for all types of approvals. There is no charge for changes of personnel. 

    Please note that for changes of Nominated Postholders, a CAA Form 4 (SRG1705) will need to be completed and attached to the application.

    To help us progress your application, please send a copy of your draft exposition to apply@caa.co.uk or attach/upload the draft exposition to the online application form (where applicable).

    In cases where an organisation holds more than one approval and requires to make an application for a change of address which will affect each approval held, you can complete the change of address form which will cater for all approval types. (You will need to provide a copy of your amended expositions).

  • How much does it cost?

    • See the Official Record Series 5, CAA Scheme of Charges.
    • In the event of a discrepancy between the information here and the Official Record Series 5, CAA Scheme of Charges (Airworthiness, Noise Certification and Aircraft and Aircraft Engine Emissions), the Scheme of Charges takes precedence.

    How long will it take for my application to be processed?

    • When the Organisation Approvals team receive the recommendation from Airworthiness confirming the organisation has achieved the required standard, the approval certificates will be raised and sent to your organisation within 20 working days.

    How long is it valid for?

    • Once granted a Part 145 approval requires a recommendation for continuation every 24 months from date of initial issue. This is raised by the CAA Surveyor following a satisfactory audit programme.
    • The additional scope of approval will be incorporated into the continued oversight plan.
    • A completed online application form submitted by an Authorised Representative of the Company
      (see the application form for details on who can apply).
    • Completed CAA Form 4 forms for any changes to key personnel. 
    • A draft copy of the amended section(s) of the  Maintenance Organisation Exposition (MOE).
    • A completed MOA compliance checklist.
    • A completed Regulation (EU) No 376/2014 as retained(and amended in UK domestic law) under the European Union (Withdrawal) Act 2018 Compliance Checklist.
    • A completed SRG 1760 form (Principal Place of Business Key Facts form) if your organisation is trading as a registered company and the change affects the location of your principal place of business.
    • A copy of the company Certificate of Incorporation if the change affects the registered company name.
    • A completed organisation internal Audit Report (including objective evidence) to confirm the organisation is compliant and ready for the CAA audit.
    • Payment of the relevant fee 
    • If you hold an FAR 145 Repair Station approval, this will also need to reflect any changes that are made to the Part 145 approval. See link below for application page.

    How to change a FAR 145 Repair Station approval

    • An automated email receipt after you submit the online application form.
    • The CAA Resource Management Team will contact you to arrange for a Surveyor to carry out an on-site audit.
    • Any questions regarding the scheduling of your on site visit can be directed to the Resource Management Team at 0330-0221908.
    • An Airworthiness Surveyor will conduct an audit against the requirements and any audit findings will be raised in an audit report.
    • The Airworthiness Surveyor will review the nominated personnel. Interviews for key personnel may be carried out.
    • If findings have been raised, the organisation should address all the findings and notify the Surveyor of the actions taken.
    • Once any audit findings relating to the initial application have been closed, the Airworthiness Surveyor will submit a recommendation to the Organisation Approvals Team for the issue of the approval. 
    • Your organisation can begin to undertake and release maintenance once you receive the certificate.