FAST FIVE: The Best Analysis Of What Really Happened To The Boeing 737 Max From A Pilot & Software Engineer
It was an * Economic problem that the 737 engines used too much fuel, so they decided to install more efficient engines with bigger fans and make the 737MAX.
The airframe with the engines mounted differently did not have adequately stable handling at high AoA to be certifiable.
Both 737MAXes that crashed were delivered without this option.
If the pilots had correctly and quickly identified the problem and run the stab trim runaway checklist, they would not have crashed.
– Trevor Sumner (@trevorsumner) March 16, 2019 Nowhere in here is there a software problem.