What action must be completed within 7 days of selling an aircraft?

Mailing back the Certificate of Registration (C of R) to Transport Canada within 7 days of selling an aircraft is a crucial step in the process of transferring ownership. This requirement ensures that the records maintained by the regulatory authority reflect the current ownership status of the aircraft. When ownership of an aircraft changes, the C of R must be returned to Transport Canada in order for them to update their records accordingly.

This process helps prevent any potential legal or safety issues that could arise from outdated registration information. For instance, if the C of R is not updated, the previous owner may still be associated with the aircraft in regulatory terms, which could lead to liability concerns or issues related to airworthiness and compliance with regulations.

The other options, while important actions in the context of aircraft ownership transfer, do not specifically need to be completed within this 7-day timeframe. Notifying the new owner, submitting maintenance records, or conducting a final inspection may be good practices, but they do not have the same regulatory urgency as returning the C of R to Transport Canada.