- 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 processing your application for the design approval document
- If you’re a Canadian owner or operator, please send your application and supporting documents to your Principal Airworthiness Inspector. If you don’t know who your Principal Airworthiness Inspector is, or can’t reach them, you can submit your application to your Regional Aircraft Certification Office