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Boeing 737 pilots battled confused safety system that plunged aircraft to their deaths – black box


In the end, the fault comes back to Boeing. Adding the MCAS system onto the 737MAX was a bodge to get it through qualification after the engine/airframe changes made it unsafe in a stall, but the crash would not have happened if the system had been properly designed against sensor failure (redundancy, voting) and/or the pilots/airlines had been told about MCAS.

The first one would have probably meant design changes to add the extra AOA sensors and cost Boeing more at manufacture (bad), the second would have meant recertification and retraining of pilots which could have meant them selling fewer aircraft (bad). In the end somebody decided that money mattered more than safety -- probably not deliberately, but this is the kind of sloppy "it'll probably be just fine" thinking which sooner or later kills people.

Of course if it comes out that the possible problem was pointed out by engineering but stomped on by management (Ford Pinto, anyone?) and this ever comes out, Boeing will be in deep doo-doo...

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