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Re:Citing a serious flight test incident, FAA slows Boeing 7... by FabHK on Sunday June 27, 2021 @03:51PM (#27654685)
> late in development MCAS was given more control authority than initially planned

... without triggering re-evaluation of the seriousness/consequences of failure. That meant that failures of MCAS were considered unproblematic, which meant that lower levels of redundancy were deemed acceptable.

Quite a process/management failure.

Re:Citing a serious flight test incident, FAA slows Boeing 7... by _ph_ on Monday June 28, 2021 @03:58AM (#27659156)
Well, technically the failures of MCAS should be unproblematic, as the stabilizer runaway protocol is well trained for any 737 pilot and would cope with a MCAS misfunction. The problem is: in the two crashes the pilots either completely failed to follow the protocol (Lion Air) or to late and failed to recover (Ethiopian Airlines).