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Reading a lot of detailed reports, I concluded that nobody at Boeing ever properly tested the conditions that happened by both Lion Air and Ethiopian, until muc
by acqq 8y ago
Reading a lot of detailed reports, I concluded that nobody at Boeing ever properly tested the conditions that happened by both Lion Air and Ethiopian, until much after the second crash. Boeing didn't do enough steps to reconstruct what happened by Lion Air, otherwise they would have never published totally useless procedure which was then followed by the pilots of Ethiopian. The actual testing in the proper simulator would have shown that the emergency procedure, as written by Boeing after Lion Air crash, just can't work.
The pilots in Ethiopian and all the passengers paid with their lives for a whole world to learn that.
The world knows because one pilot tried to partially reconstruct the conditions on his own in an older simulator, as there were effectively almost no new simulators because the Boeing's selling point was that the new model of the plane is same as an old one model, just to avoid the recertification and pilot retraining. So the said pilot did the test for youtube, showed that what the pilots probably did matched the emergency procedure, and that exactly that following the procedure most probably results in the crash, but had to remove the video once his employer became aware of what he did.
I've posted the link to that original source then, but HN moderators marked it then as a "dupe":
https://leehamnews.com/2019/04/03/et302-used-the-cut-out-switches-to-stop-mcas/ https://leehamnews.com/2019/04/03/et302-used-the-cut-out-swi...