Which identifier indicates Canadian nationality for secondary aerodromes?

The identifier that indicates Canadian nationality for secondary aerodromes is the letter-letter-number format. In this system, the first two letters of the identifier are used to represent the Canadian aviation service, and the following number helps to specify individual airports or aerodromes within that service region. This format ensures that those identifying Canadian secondary aerodromes can quickly recognize their status and helps with the organization and management of aeronautical navigation.

By using this distinctive pattern, it differentiates Canadian aerodromes from those in other countries, which may use different systems for their identifiers. This helps pilots, air traffic controllers, and other aviation personnel communicate effectively and ensure clear understanding of locations within the airspace.