Change an Existing EASA Part 145 Approval

Guidance for maintenance organisations


Regulation (EC) 2042/2003 details the rules for the continuing airworthiness and maintenance of aircraft subject to European regulation (EASA aircraft).

Part-145 of this Regulation concerns the maintenance of EASA aircraft and components used for commercial air transport purposes as well as those defined by this regulation as ‘Large Aircraft’.

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.

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 BCAR and EASA approvals. (You will need to provide a copy of your amended expositions).

Change of Nominated Postholder or Accountable Manager

Changes to the key personnel in an organisation must be notified to CAA. 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 EASA approvals as well as BCAR (national) approvals. There is no charge for changes of personnel.

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


  • Organisations should be located in the UK
    (Organisations located outside the UK, including organisations based in the Channel Islands, should apply directly to EASA).


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.

Processing time (On receipt of all required information)

See the section below called 'what to expect'.

Validity period

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.

Associated Rules, Regulations and Forms

You will need to provide

  • A completed online application form submitted by an Authorised Representative of the Company
    (see the application form for details on who can apply)

    (Aircraft ratings should be listed as per EASA Part-66 Appendix 1 listing where applicable) 
  • Completed EASA Form 4 forms for any changes to key personnel. 
  • A draft copy of the amended section(s) of the Maintenance Organisation Exposition (MOE)
  • A copy of the company Certificate of Incorporation if the change affects the registered company name.
  • Payment of the relevant fee

If you hold a FAR 145 Repair Station approval this will also need to reflect any changes that are made to the EASA Part 145 approval. 

If Approvals have not received all relevant documentation within 4 weeks from the date of your application, your application will be cancelled, refunded and you will be advised to reapply.


How to apply

What to expect

  • An automated email receipt after you submit the online application form.
  • A Technical Support Officer will make an initial assessment of your MOE and application and will contact you with any queries.
  • 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 01293 573600.
  • 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 A & A for the issue of the approval.
  • When A&A 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. 

Contact us


Applications and Approvals
Civil Aviation Authority
Aviation House
Gatwick Airport South
West Sussex
Telephone: 01293 768374 (open 8.30am to 4.30pm)