text:  And therefore, Boeing decided you didn't need to tell them about it and you didn't need to train them in the simulators on it. And what happened was during the design process, Boeing lost control of its process. So the system became much more powerful than originally envisioned. The FAA wasn't fully informed. Some people inside the FAA knew about it, but Boeing never officially, formally, properly told the FAA about how much more powerful it was.