Originally Posted by
infrequentflyer789
The surprising thing for me is that this appears to mean they have not yet flown the final fix. So are all those previous test flight useless now? Was this the reason for the test-flight hiatus - ie. not that they'd finished testing (as some said) but that the software wasn't final yet?
My understanding is that much of that flying was to demonstrate the characteristics of the airplane with MCAS disabled, ostensibly to "demonstrate system failure conditions (to classify failure effects)," but I suspect also to satisfy all the questions from foreign CAAs about unaugmented handling characteristics.