They even tried reproducing it in simulators and added 1000 feet (relative to the Ethiopian aircraft) in order for the aircrew to use the recovery procedure (no

They even tried reproducing it in simulators and added 1000 feet (relative to the Ethiopian aircraft) in order for the aircrew to use the recovery procedure (nose down pitch) to be able to move the horizontal stabilizers with just the handle. At low altitude, even with full knowledge, MCAS can make the aircraft unrecoverable. Aircraft should not fly without it being corrected. The Ethiopian crew maybe have had knowledge of MCAS.