ELI5: Explain Like I'm 5

1963 BAC One-Eleven test crash

In 1963, there was an airplane called the Bac One-Eleven that they were testing to make sure it was safe for people to fly in. During one of these tests, the people in charge accidentally made the airplane crash. This was a very serious and scary thing, and unfortunately, some of the people on the plane were hurt or even killed.

When we test things like airplanes, we want to make sure they are very safe so that people can use them without getting hurt. But sometimes when we are testing things, mistakes can happen. The people in charge of testing the Bac One-Eleven made a mistake and the airplane crashed, which was not good at all.

When something like this happens, we want to learn from it so that we can make sure it doesn't happen again. People who work with airplanes studied what went wrong in the crash and figured out ways to make airplanes even safer in the future.