I can't really speak to other countries and what they're studying. I understand that the Official Languages Act applies to Air Canada and that it was formerly a crown corporation, and that requirement is in the Air Canada Public Participation Act. Under the Lobbying Act, airlines would be corporations and be required to register their lobbying activities. I can't speak to whether that airline or any other airline is registered. I suspect that many of them likely are.
In addition, an association that represents airlines or any other industry would also be required to register under the act.
The commissioner has issued guidance with respect to crown corporations, departmental corporations, and shared-governance organizations that essentially states that when those sorts of organizations deal with public office holders.... For example, under the Financial Administration Act, crown corporations have a number of requirements that they must meet; they must report to their minister. Those sorts of discussions about the mandate and the financing of crown corporations are not registerable lobbying activities.
That doesn't really answer your question that well, but that's how under the Lobbying Act these sorts of organizations are treated.