According to a preliminary accident report, the pilots of an Ethiopian Airlines Boeing 737 MAX that crashed on March 10 were unable to manually counter significant nose-down trim before losing control of the airplane in a dive that reached 500 knots. The report, released by the Ethiopian government Thursday, confirms that the MAX 8's MCAS subsystem, a stall-protection add-on, rolled in nearly maximum nose-down trim in response to a faulty angle-of-attack sensor.
This is a companion discussion topic for the original entry at https://www.avweb.com/recent-updates/business-military/report-at-odds-with-claim-that-ethiopian-pilots-followed-boeing-guidance-updated