Similar to what have been discussed and argued to death [no pun intended] here for quite a while...
.
.Lion Air Families Told 737 MAX Design Flaws Linked To Deadly Crash
Mechanical and design issues contributed to the crash of a Lion Air 737 MAX jet last October, Indonesian investigators told victims’ families in a briefing on Wednesday ahead of the release of a final report.
Contributing factors to the crash of the new Boeing (
BA.N) jet, which killed all 189 on board, included incorrect assumptions on how an anti-stall device called the Maneuvering Characteristics Augmentation System (MCAS) functioned and how pilots would react, slides in the presentation showed.
The briefing slides showed that a lack of documentation about how systems would behave in a crash scenario, including the activation of a “stick shaker” device that warned pilots of a dangerous loss of lift, also contributed.
“Deficiencies” in the flight crew’s communication and manual control of the aircraft contributed as well, the slides showed, as did alerts and distractions in the cockpit.
The deficiencies had been “identified during training,” the slides said, without elaborating.
Reliance on a single angle-of-attack sensor made MCAS more vulnerable to failure, while the sensor on the plane that crashed had been miscalibrated during an earlier repair, according to the slides.
The final report will be released on Friday...
-
https://www.reuters.com/article/us-i...-idUSKBN1X20EJ