How the pilots of Lion Air Flight 610 lost control

Re:How the pilots of Lion Air Flight 610 lost control by trevyn on Wednesday December 26, 2018 @10:05PM (#18766923)

Ah, this is quite good as well: https://leehamnews.com/2018/11/14/boeings-automatic-trim-for...

Apparently it wasn’t the standard autopilot trim, but a special safety program specific to the 737 MAX. Which still is just a switch to disable, if you know that switch is there, or that there is a checklist for dealing with runaway trim, or that you’re aware that auto-trim commands are the reason your plane keeps nosing down...

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Re:How the pilots of Lion Air Flight 610 lost control by caf on Thursday December 27, 2018 @12:22AM (#18767539)

I think the most important point described in that article is that the MCAS trim, unlike the other kinds of elevator trim, isn't defeated by limit switches on the yoke - and that this critical information was not in the training or flight manual.

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Re:How the pilots of Lion Air Flight 610 lost control by dotancohen on Thursday December 27, 2018 @08:22AM (#18769265)

If true, then this right here is the problem root. Why isn't pilot limit respected with regard for the MCAS specifically? Are any other systems so independent?

I remember years ago the Boeing folks claiming that the automated Airbuses would be dangerous because the pilot always knows best. So how did it come to this on a Boeing?

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Re:How the pilots of Lion Air Flight 610 lost control by caf on Thursday December 27, 2018 @09:41AM (#18769657)

The answer appears to be something along the lines of "because the whole point of MCAS is to stop the pilot flying the aircraft beyond the limits of stability".

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