Fascinating how many people had to actively shove this to the side so that it became potentially life threatening:
- CFM designed an engine that, in certain emergencies, dumps oil into the quite possible (actually traditional, if I understand correctly?) human-breathing stream of the aircraft, apparently, without the relevant human-breathing system shutdown mandate when said (or any) emergency system is triggered;
[truth be told, we never heard their complete story]
- Boeing integrating said new engines into their new 737MAX without appropriately checking for possible new emergency mode interactions with their life-support (in this case, breathing) systems.
- FAA dropped the ball upon accident investigation;
- FAA removed their employee that then picked up the ball;
- EASA swallowing what they were told by FAA without asking further questions;
Well...
I have worked in many no-harm potential software projects that employed more careful engineering than this.
All hardware projects I worked on employed more careful engineering than this.
Conclusion:
It becomes more and more difficult to falsify that Boeing, nowadays, simply abandoned engineering design reviews, and, relies solely on some blend of "agile" methods to design people-carrying airplanes.
- CFM designed an engine that, in certain emergencies, dumps oil into the quite possible (actually traditional, if I understand correctly?) human-breathing stream of the aircraft, apparently, without the relevant human-breathing system shutdown mandate when said (or any) emergency system is triggered; [truth be told, we never heard their complete story]
- Boeing integrating said new engines into their new 737MAX without appropriately checking for possible new emergency mode interactions with their life-support (in this case, breathing) systems.
- FAA dropped the ball upon accident investigation;
- FAA removed their employee that then picked up the ball;
- EASA swallowing what they were told by FAA without asking further questions;
Well...
I have worked in many no-harm potential software projects that employed more careful engineering than this.
All hardware projects I worked on employed more careful engineering than this.
Conclusion: It becomes more and more difficult to falsify that Boeing, nowadays, simply abandoned engineering design reviews, and, relies solely on some blend of "agile" methods to design people-carrying airplanes.