Report tells how lack of training brought down Lion Air 737

Bloomberg News tells an astonishing story Wednesday of an off-duty pilot riding in the cockpit jumpseat who saved a Lion Air flight from crashing. The next day, under command of a different crew facing what investigators said was an identical malfunction, the jetliner crashed into the Java Sea killing all 189 aboard.

https://www.youtube.com/watch?v=MoNvWzTmG1E