From a pilot's perspective, I can tell you that 20 years ago a Transport Canada inspector would show up on my flight from wherever I was going, and he'd sit in that jump seat and he'd conduct an inspection of me and my first officer. I can tell you that I've had in the last five years maybe two cases where they've shown up unannounced—I wouldn't say unannounced, because I know the day prior that he's coming there—and he'll be in the jump seat and he'll conduct an inspection of me.
Now, that's the day-to-day operational guy on the line. How they conduct the inspections with the company, the carrier, they could probably give you a better answer to that, but I know they do a PVI. I know they did a PVI in, I believe, 2009 and I know they just finished one up last year.