Application for Approval of Major Change/Major Repair Design

How to apply

The preferred way to receive this application is via the EASA Portal.
You will find information on how to register to become a user of the EASA Portal on our website.

Applications may alternatively be submitted by email to  MajorChange-MajorRepair [at] (MajorChange-MajorRepair[at]easa[dot]europa[dot]eu), this might however lead to slightly longer processing times. 

Please support the paperless management of applications by submitting applications to us electronically only.

Additional documents

If this is your first application to EASA and you do not have an EASA applicant account, you will need to submit a copy of articles of incorporation of the entity or business registration stating the company name, business registration number and legal seat of the company.

In case the applicant is not a company but a natural person, a copy of the person’s ID or passport needs to be provided.

For applications from the U.S., Canada and Brazil, EASA will wait for the authority forwarding letter prior to registering the application. 

A streamlined validation process applies for the validation of FAA Major Changes, classified as basic. The full data package, as defined in the applicable TIP needs to be submitted at time of the application. 

Documents can be uploaded using the EASA file box.

Specific technical documents shall be provided directly to the person responsible for investigating your application. The individual contact details will be communicated to you upon EASA application acceptance.

The exchange and review of documents may also be conducted using SEPIAC – contact sepiac-support [at] or your PCM to understand whether your project can be managed using SEPIAC and request the access to the tool.

Next steps

Please also see the related Information Sheet on the Application Acceptance Process for a more detailed view.

Good to know

Scope: FO.CERT.00031 covers the following activities: Major Change, including requests to add new model(s) to the Type Certificate (activity formerly known as Derivative); Major Repair and Major Change to STC. 

Application effectiveness: The effectiveness of your application is limited to five (5) years for large aeroplanes and large rotorcraft and to three (3) years for any other product. In case the type certificate is not issued within the time limit of five or three years, you may file for an extension of your application by submitting an informal email request to the Certificate Delivery Team. Alternatively a new application can be submitted. Major Repair applications have unlimited effectiveness.

Fees and Charges: In accordance with Commission Implementing Regulation (EU) 2019/2153, the Agency levies fees and charges for all its certification and approvals activities. The applicable table for Major change applications is table 3 and the fee will be valid for a period of twelve (12) months. For the period after the first 12 months, the fee shall be 1/365th of the relevant annual fee per day.

Eligibility: To apply for a Major Change or a derivative, you must be the Type certificate holder of the product. Major Changes to STC can only be applied for by the STC holder. You are kindly asked to indicate the EASA approved STC number in the dedicated field when applying for a ‘Major Change to STC’ approval.

Applicant Services

A video tutorial and further information on the use of the Portal are available on the Portal website. The application form also contains completion instructions, which are embedded in the form.

Please also consult our FAQs.

Should you have any further question or suggestion, please contact the Certificate Delivery Team: Applicant.Services [at]

For questions that are specifically related to the Fees & Charges and your invoice, please consult our FAQs.