I'll refer back to the variety of reports and reviews that have been undertaken to look at that exact question: What went wrong?
My colleague Mr. Turnbull has already highlighted one piece that went wrong and that needs to change, which is how we look at the incorporation of change in the aircraft and how it interacts or affects the upstream of the aircraft—the changed product rule. We have to look at that. That's something on which we'll see change moving.
We also have to look at the interaction between different authorities and their manufacturers. As my colleague Mr. Turnbull said, it's public record that information was not forthcoming with regard to particular aspects of this aircraft. That circumstance meant that validating authorities could not make a full decision or fully understand the impacts of a particular system on an aircraft. That will have to change. It's something that the congressional report hits on directly in the U.S.
We'll also look at our engagement with regard to validation. As we said at the beginning, the system.... To give a rough sense, when Canada moved forward and certified the Bombardier C Series aircraft, when it was a Bombardier product—it's since become an Airbus product—about 160,000 hours were put into that certification. About 160,000 hours of Canadian time and Canadian certification expertise went into the review and certification of that aircraft. We rely on states to apply the same amount of rigour to their certification standard, but I'll let you know, in this case, from a validating authority, from the time the aircraft was grounded to now, we've contributed about 15,000 hours just to the modifications to this system that are being proposed.
We'll see a greater involvement in validation, but we have to keep with the system where the state of design certifies the aircraft and the other leading authorities go ahead and validate the aircraft independently.