There's simply no substitute for experience in terms of aviation safety.

When I testified before Congress after the Hudson River landing, Congressman James Oberstar of Minnesota said, 'Safety begins in the boardroom.' That's as true in medicine as it is in aviation. It always boils down to leadership.

Medical professionals are as skilled and as dedicated as any, but they operate within a fragmented system that has not progressed as far as we have in aviation.

My message going forward is that I want to remind everyone in the aviation industry - especially those who manage aviation companies and those who regulate aviation - that we owe it to our passengers to keep learning how to do it better.

It's almost an out of body experience to see things that First Officer Jeff Skiles and I said in the cockpit together, played by actors.

Pilots learn to use human skills to communicate information and make decisions collectively, which creates a shared sense of responsibility among the team for better outcomes.