Apply for a Part M Subpart F Approval

Application guidance for maintenance organisations


Regulation (EC) No. 2042/2003 details the rules for the continuing airworthiness and maintenance of aircraft subject to EASA regulation. Part M Subpart F of this Regulation concerns the maintenance of EASA aircraft with a MTOM of 5700 kg and below and components that are used for non-commercial air transport.


  • Maintenance organisations must be located in the UK.
  • Organisations located outside the UK, including 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.

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.  

Same Day Services

Same day, special delivery and other customised services are available at an additional cost.  These should be requested when you submit your application.

Processing time (On receipt of all required information)

You will receive an automated email receipt for your online application. Approval certificates will be processed and dispatched within 20 working days following receipt of a recommendation from a CAA Regional Office.

Validity period

  • 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 a satisfactory audit programme.

Associated Rules, Regulations and Forms

Information on a Certificate of Incorporation

A company is a separate Legal Entity governed by the Companies Act, which conducts activities on its own behalf and is distinct from the persons who own and control it. The shareholders are the owners and control the company, but their liability in relation to the company's creditors is limited. Incorporation is the process by which the company is entered on the register at the Companies Registry, and thereby comes into existence as a separate legal person. A Certificate of Incorporation will be sent to the company by the Companies Registry on first incorporation and on any change of name.

You will need to provide

  • An online application form submitted by an authorised representative of the company.

    (Aircraft ratings should be listed as per EASA Part-66 Appendix 1 listing.  At this time the Part 66 listing does not include Sailplanes, Powered Sailplanes or Balloons.  In this case use the aircraft type designation specified on the Type Certificate Data Sheet)

  • A minimum of one EASA Form 4 for key personnel i.e. Quality Manager
  • A draft copy of the Maintenance Organisation Manual 
  • A copy of the company Certificate of Incorporation if your organisation is trading as a registered company
  • Payment of the relevant fee (this can be made online)

How to apply

What to expect

  • An automated email confirming receipt of your online application.
  • An e-mail to confirm your provisional Part M Subpart F approval number - normally within 10 working days.
  • A Technical Support Officer will make an initial assessment of your application and MOM and will contact you with any queries
  • The Resource Management Team will contact you to arrange for an Airworthiness Surveyor to carry out the 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 the findings and notify the Airworthiness 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)