A Supplemental Type Certificate (STC) is a document issued by Transport Canada to approve a change to the type design of:

Contact your Regional Aircraft Certification Office.

• If you’re a national Design Approval Document Holder, please email your application to Continuing Airworthiness division
• If you’re a regional Design Approval Document Holder, please send your application to the Regional Aircraft Certification Office that issued or is processi

• anyone can apply for an AMOC with an Airworthiness Directive (AD) or an exemption to AD
• if you’re not sure if you need an AMOC or exemption, contact the Continuing Airworthiness division
• if you apply for an AMOC, it will be issued to only you unless you ask that a third-party to be the holder

Applying for any type of AMOC or exemption

Your application must have enough information to clearly identify which products will and will not be subject to the AMOC and/or exemption.

An Alternative Means of Compliance (AMOC) grants special permission to use an alternate means to comply with an Airworthiness Directive (AD) according to (CARs) 605.84(4). You need to apply for this special permission, and the alternate means you choose must provide a similar level of safety as the part or procedures that are normally required by the Airworthiness Directive.

Every AMOC must include at least one alternative. You can choose an alternate means of compliance for:

Contact your Regional Aircraft Certification Office.

If the country, you’re applying for has a bilateral agreement or arrangement with Canada, follow the process that has been agreed upon by the two countries.

If there is no bilateral agreement in place, contact your local authorities to find out if what procedures are in place to apply for a Canadian validation.

The documents you include with your application depend on the type of approval for which validation is being requested.

For the validation of type certificates or supplemental type certificates of foreign designed aeronautical products, refer to section 521.453 Canadian Aviation Regulations for the list the requirements for certifying or changing aeronautical products.

Validation of a foreign approval to get a Canadian approval or acceptance

The design approval must be validated by Transport Canada to:

Contact your Regional Aircraft Certification Office.