There is a range of possibilities, including fines. We also suggested agreements between the Commissioner's office and Air Canada. An agreement would protect Air Canada from legal action for a certain period. If the agreement were not respected, however, legal action could be taken. So there is a range of options that we have put forward for your consideration. They all have their pros and cons.
Evidence of meeting #18 for Official Languages in the 42nd Parliament, 1st Session. (The original version is on Parliament’s site, as are the minutes.) The winning word was commissioner.
A video is available from Parliament.