Change a FAR 145 Repair Station Certificate (EU / US Bilateral Agreement)

How to apply


Organisations may hold an approval from the Federal Aviation Administration (FAA) to maintain aircraft or components for aircraft that are registered in the United States of America. A Bilateral Agreement between the EU and the USA was signed on 3 May 2011.

The Bilateral Agreement means that the National Aviation Authorities (NAA’s) in Europe will undertake the oversight of organisations that hold EASA Part 145 approval and FAR 145 Repair Station Certification.

The UK CAA will undertake the oversight of those organisations where the main base is in the UK.

Removing ratings or facilities from an existing approval

You can remove ratings and facilities here 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


  • Organisations must hold a valid EASA Part 145 approval
  • Changes must be made coincidentally to EASA Part 145 and FAR 145 approvals


Airworthiness application charges

Applications made before 1 April 2015

  • The charge for A1/B1 ratings is £2786
  • The charge for A2/B2/B3/C/D ratings is £2189

Applications made from 1 April 2015

  • The charge for A1/B1 ratings is £1,078
  • The charge for A2/B2/B3/C/D ratings is £490

The EASA Part 145 scope of approval and the FAR 145 Ops Spec must remain synchronised, therefore you will also need to apply for a variation to your EASA Part 145 approval (see: Change an Existing EASA Part 145 Approval for further information and 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

Processing time (On receipt of all required information)

We will confirm receipt of your application within 10 working days.

Validity period

Unless expired, revoked, suspended or cancelled FAR 145 Repair Station Certificates are valid for 12 months following initial approval and then valid for 24 months after the first renewal.

Associated Rules, Regulations and Forms

You will need to provide

  • A completed online application form 
  • Relevant fee
  • FAA Form 8310-3 Application for Repair Station Certificate for change
  • Also have in progress an Online application for the same change to be made to their EASA Part 145 approval
  • Draft Supplement to Maintenance Organisation Exposition (MOE)
  • Letter to confirm employees have received Hazardous Materials training if applicable
  • eVID data if any changes have been made

How to apply

What to expect

  • A&A will process the application pack and forward it to the local CAA regional office
  • If the change is to housing / facility or location A&A will forward the FAA Form 8310-3 to the FAA
  • A&A will confirm receipt of your application
  • The regional office carries out a suitable investigation and raises any audit findings
  • Organisation addresses the audit findings and sends response to the regional office
  • The regional office will assess the proposed closures and when able to will close the audit findings
  • When able to the regional office will make recommendation for the change to the Repair Station Certification and the EASA Part 145 scope of Approval. This recommendation pack will be submitted to A&A
  • A&A will assess the recommendation and issue the revised EASA Part 145 Approval Certificate
  • A&A will forward the recommendation to the FAA
  • The FAA will review the recommendation and invoice the applicant for the issue of the revised Repair Station Certificate
  • The applicant sends payment to the FAA
  • FAA will issue a revised FAR 145 Repair Station Certificate and Ops Spec. Two copies will be sent to the applicant and a copy will be sent to A&A
  • The applicant signs the FAR 145 Repair Station Certificate and Ops Spec and returns one copy to the FAA

Contact us

Applications and Approvals
Civil Aviation Authority
Aviation House
Gatwick Airport South
West Sussex
Telephone: 01293 768374 (open 8.30am to 5pm)