The work that is involved in building a modern day commercial airplane is incredible. It takes nearly 4,000 highly skilled engineers over 7 years of planning to design and make a commercial airplane, part of the reason is due to the amount of testing and then re-testing thats involved.
And there is a lot that can go wrong, just one Airbus A350 has 2.65 million parts. In this five minute video put together by Minute Physics you get to see exactly what goes into make a commercial airplane, including a test that involves shooting ducks into the moving engine… just incase it ever happened in real life.