From a certification component—and we've explained in a few of the responses we've had—we believe our certification approach in Canada is very sound. We have very strong oversight and a very strong relationship with our manufacturers. I don't believe that certification approach is called into question here.
From a validating authority perspective, that's what we were in with the Boeing 737 MAX. We've explained that what happened here was that there was a withholding of information with regard to the full impact of a particular system on an aircraft. In this validation approach we're speaking about now that concluded back in December of this year—to my colleague Dave's point—what we did was we turned up the level of input and the level of involvement so that we were able to fully come to an understanding that when we validated this aircraft we both could say, and Transport Canada could say, that all of our safety concerns are addressed.
We worked with the FAA and other aviation authorities to ensure that the systems that were previously mischaracterized, withheld and not explained fully, were done this time.