Originally Posted by
derjodel
With all the information we have now, I‘m sure that a number people knew exactly what was going on after lion air crash. They knew. There is no way they would not.
Yet, all of them let Etiopian happen. That‘s manslaughter.
They knew and they put out a detailed AD with the FAA. The supplied checklist which was almost identical to the runaway trim NNC, if followed, would have prevented the Ethiopian crash.
It was not followed. Step 2 was to use MET to trim to neutral then the next step was switch off stab trim. AS shown by the Lion air flights MET stopped the initial version of MCAS and could recover the trim back to neutral. It seems that manual trimming is not second nature for 73 pilots. Nevertheless, it would have been better to self-ground the aircraft and issue the software fix to require both AOA vanes to match AND show the same high angle of attack for MCAS to operate.
AS one of the reports said the issue was flagged as 'Major' as it was considered a qualified crew could recover from an MCAS runaway; however, current crews should not have been expected to cope due to the training regimes at most airlines. Therefore the MCAS issue should have been flagged as catastrophic which would have required a far better and rapid fix to the problem.