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UK Civil Aviation Regulations

These are published by the CAA on our UK Regulations pages. EU Regulations and EASA Access Guides published by EASA no longer apply in the UK. Our website and publications are being reviewed to update all references. Any references to EU law and EASA Access guides should be disregarded and where applicable the equivalent UK versions referred to instead.

Regulation (EU) No 748/2012 as retained (and amended in UK domestic law) under the European Union (Withdrawal) Act 2018 determines the rules for the approval of design and production organisations. Part-21 subpart G of this regulation concerns the production of Part 21 aircraft or the associated components.

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. The Civil Aircraft Airworthiness Information and Procedures (CAP 562), Leaflet C-30 provides further information.


  • The organisation must already hold a UK Part 21 Subpart G Approval.

Adding ratings or facilities to an existing approval

Complete and submit the online application form for the Part 21 Subpart G Approval or Variation to an Existing Approval. 

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Removing ratings or facilities from an existing approval

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.

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Changes of address

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 both Part 21 aircraft and non-Part 21 aircraft approvals. (You will need to provide a copy of your amended expositions).

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Change of nominated postholder or accountable manager

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 both Part 21 aircraft and non-Part 21 aircraft 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).

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How much does it cost?

The Official Record Series 5, CAA Scheme of Charges provides further information on the 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 Civil Aviation Authority (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 or by a cheque made payable to the Civil Aviation Authority.

When using bank transfer, it would be helpful if you could 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?

  • Correctly completed applications will be processed, acknowledged and passed to the Regional Office for investigation within 10 working days.
  • Approval certificates will be processed and dispatched within 20 working days following receipt of a recommendation from a CAA Regional Office.

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. his is raised by the CAA Surveyor following a satisfactory audit programme.

What do I need to include with my application?

  • An online application form submitted by an Authorised Representative of the Company.
    (See application form for further details on who can apply.)

  • A minimum of one CAA Form 4 for key personnel for example, Quality Manager.
  • A draft copy of the Production Organisation Exposition (POE) and POE associated compliance checklist.
  • A draft copy of the Capability List if not included within the POE.
  • A completed UK Regulation (EU) No 376/2014 Compliance Checklist.
  • A demonstration of regulatory need, for example DOA/POA arrangement document, ETSO application.
  • A completed SRG1760 - 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 completed organisation internal Audit Report (including objective evidence) to confirm the organisation is complaint and ready for the Civil Aviation Authority (CAA) audit.
  • A copy of the company Certificate of Incorporation if the change affects the registered company name.
  • Payment of the relevant fee (this can be made online).
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What happens next?

  • You will receive an automated email receipt after submitting the online application form.
  • A Technical Support Officer will make an initial assessment of your application and Production Organisation Exposition (POE) and will contact you with any queries.
  • The Civil Aviation Authority (CAA) Resource Scheduling 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 Scheduling Team at ResourceScheduling@caa.co.uk.
  • The Surveyor will conduct an audit against the requirements and any audit findings will be raised in an audit report.
  • The 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 Surveyor will submit a recommendation to the Shared Services Approvals team for the issue of the approval.
  • When the Approvals team receive the recommendation the approval certificates will be raised and sent to your organisation within 20 working days.
  • Your organisation can begin undertaking and releasing work once you receive the certificates.
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