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UK – EU Transition, and UK Civil Aviation Regulations

To access current UK civil aviation regulations, including AMC and GM, CAA regulatory documents, please use this link to UK Regulation. Please note, if you use information and guidance under the Headings below, the references to EU regulations or EU websites in our guidance will not be an accurate information or description of your obligations under UK law. These pages are undergoing reviews and updates.

Please visit the CAA's EU exit microsite for information and guidance relating to UK’s exit from the European Union.

As part of this preparation, the CAA will now accept third country applications from organisations with their principal place of business located outside the UK, (including EU countries, Channel Islands and rest of the world) for airworthiness approvals:

  • Part CAO Maintenance Organisation - CAO
  • Part CAMO Continuing Airworthiness Maintenance Organisation - САМО
  • Part 145 Maintenance Organisation Approvals - MOA
  • Part 147 Maintenance Training Organisation Approvals – MTOA
  • Part 21 Subpart G Production Organisation Approval - POA


Who should apply?

Organisations with their principal place of business located outside the UK, (including the EU Countries, Channel Islands and rest of the world), that wish to carry out production, maintenance or manage continuing airworthiness of aircraft that are used for UK-registered aircraft.

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.

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.

If the number of hours taken by the CAA to carry out its investigations in relation to the application exceeds the cost shown above, the applicant must pay an excess hourly charge. The CAA shall determine the excess hourly charge by taking the total number of excess hours taken by the CAA to complete the required investigations in relation to the application and multiplying that number of hours by an hourly charge. The balance for the excess hourly charge (total hourly charge less initial charge already paid) is payable by the applicant to the CAA and will be invoiced to the applicant.

Payments can be made by credit or debit card or by bank transfer. When using bank transfer, please identify what the payment is for by including your approval reference and receiving department.

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

You will receive an automated email receipt for your online application. Once your application has been processed and payment taken, a surveyor will contact you to discuss the next steps and timeframes which you can expect. No approval certificate can be issued prior to the UK’s formal withdrawal from the EU.

How long is it valid for?

  • Approvals remain valid unless cancelled, suspended or revoked.
  • Once granted, an approval requires a recommendation for continuation every 24 months from the date of issue. This is raised by the CAA Surveyor following the completion of a satisfactory audit programme.

What else do I need to know?

  • The application form must be submitted by an authorised representative of the company.
  • Part 145 ‘C’ Rated (Component Maintenance) organisations will need to apply before 31 December 2021 for the EASA Form 1’s that they have issued to continue to be accepted (Exemption ORS4 No 1452 refers).
  • Official Record Series 5, CAA Scheme of Charges
  • CAP 562 - Leaflet C-30 - 'CAA Approvals - Non-Transferability'
  • CAP 747 Mandatory Requirements for Airworthiness

What do I need to include with my application?

  • Aircraft ratings should be listed as per EASA Part-66 Appendix 1 listing on applicable application form
  • A completed CAA Regulation (EU) No 376/2014 Compliance Checklist
  • A copy of the existing EASA approval certificate.
  • A copy of the latest EASA or EU member state NAA approved Exposition (including any associated certifying staff listing, Capability List, etc)
  • A copy of the company Certificate of Incorporation if your organisation is trading as a registered company.
  • A copy of the latest audit report(s) from the EASA or EU member state NAA containing all outstanding findings and related corrective action plan, as well as enforcement actions (if any).
  • A completed organisation internal Audit Report (including objective evidence) to confirm the organisation is complaint to applicable regulation.
  • A minimum of one EASA Form 4 for key personnel i.e. Quality Manager. Additional Form 4's may be requested by your allocated CAA surveyor. Please ensure that the CAA policy on fitness of character is fully understood before submission of an application.
  • Payment of the relevant fee (this can be made online for approval types except for Part 147)

Note: If any of the required documents are missing the CAA may reject your application and you will required to re-apply once the documents are available.

How do I apply?

The online application forms for Third Country Approvals are exactly the same as used for UK organisations, as such you will be asked for the Company Registration Number. If your company has an equivalent ‘local’ number, please enter this in the Company Registration number field. If you do not have an equivalent, please enter 00000000 so that the form will let you progress.

Unfortunately, our online application form is limited to only letting organisations add up to 6 types on the application form. In cases where organisations wish to add more types, we kindly request that you submit your application online with as much detail as you can, and then follow up with an email listing all of the types you want on your approval. The email should be sent to apply@caa.co.uk and should quote the online application reference number

What happens next?

  • An automated email confirming receipt of your online application.
  • Your application will be processed and payment taken,
  • A surveyor will contact you to discuss the next steps.

No approval certificate will be issued before the UK exits the EU.

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