Sorry to post about this again in this thread, but it looks like the Ethiopian pilots were trained correctly and followed the proper procedures.
https://www.huffpost.com/entry/ethio...b0ed0d780f0c3c
"Boeing anti-stall software on a doomed Ethiopian Airlines jet re-engaged as many as four times after the crew initially turned it off due to suspect data from an airflow sensor, two people familiar with the matter said.
It was not immediately clear whether the crew had chosen to re-deploy the system, which pushes the nose of the Boeing 737 MAX downwards, but one person with knowledge of the matter said investigators were studying the possibility that the software had kicked in again without human intervention.
...
The investigation has now turned toward how MCAS was initially disabled by pilots following an emergency checklist procedure but then appeared to repeatedly start working again before the jet plunged to the ground, the people said.
A directive issued after the Indonesian crash instructed pilots to use cut-out switches to disengage the system in the event of problems and leave it switched off.
Doing so does not shut down the MCAS system completely but severs an electrical link between the software and aircraft systems, a person familiar with the technology said.
Investigators are studying whether there are any conditions under which MCAS could re-activate itself automatically, without the pilots reversing the cut-out maneuver. Boeing is in the midst of upgrading the software while adding extra training."
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