Originally Posted by
phylosocopter
as far as i am concerned the "elephant in the room" has been so long obscured that it has been forgotten about ... that is the state of alarms and displays when computer gives up. why is no one talking about this? why is this not regulated? this matter underlies so many major accidents both A and B and yet it is not being addressed. there NEEDS to be a STANDARD display and alarm state for computer disconnect . it is ridiculous to expect pilots to troubleshoot IT systems before they can start on aviate navigate communicate. how is it possible that aircraft are allowed to dump control without silencing every alarm that might possibly be spurious and blanking every display that may be incorrect. what is going on !
You have hit a particularly important nail right on the head Sir. Ever seen any stage magicians work? Everything they do is misdirection. They can fool people right up close to them, or even an entire audience of hundreds. Humans will always fall for it. We are terrible at noticing the gorrilla in the room.
With ET and Lion Air, the misdirection was the alarms and stick shaker. While MCAS sneakily ran the trim down in the background. If the computers had dumped control with a sensible, calm "AOA disagree" message, I think there's a good chance those crews would have saved the aircraft.
This does not absolve Boeing in any way of responsibility for the MCAS (and other systems) design and implementation shambles. But it is a very good point that phylosocopter makes, and one that urgently needs addressing.