That goes back to more of the early implementation of SMS. In our opinion—and bear in mind that is opinion only—Transport Canada did not do a very good job of explaining SMS to a lot of their front-line inspectors initially. There was certainly a perception among them that this was moving to carrier self-regulation, that the inspectors would not have a role in oversight, and that the big bad carriers were going to get away with murder and not carry out everything satisfactorily, and it's just simply not the case.
Evidence of meeting #34 for Transport, Infrastructure and Communities in the 41st Parliament, 2nd session. (The original version is on Parliament’s site, as are the minutes.) The winning word was airports.
A recording is available from Parliament.