WSJ: Boeing knew about the 737 MAX security issue a year before the first crash — and didn't tell anyone about it

Over the past six months, two Boeing-737 MAX aircraft crashed in Ethiopia and Indonesia. Experts believe that the cause

These crashes could be a system for improvingmanageability on critical modes MCAS. The preliminary results of the analysis of the black boxes of the aircraft said that the system worked right before the crash.

After two accidents, the aircraft company updated the software on the aircraft of all the companies that operate it.

WSJ Interlocutor states: Boeing engineers discovered a software bug back in 2017, but as a result of testing, they concluded that it poses no threat to the safety of the aircraft and passengers.

Manual Boeing learned about the error only after the disaster of the liner Lion Air, but officially recognized its presence only six weeks after the disaster, the newspaper notes.

Earlier it was reported that Boeing conducted the last 120th test flight to test the updated system of the 737 MAX.