Investigators have found pilots in the doomed Ethiopian Airlines flight followed correct procedures but couldnât save the planeâand have urged Boeing to review the control system in its 737 MAX model. The findings in the first official report into last monthâs disaster raise serious questions about the Boeing aircraftâs safety. The 737 MAX was grounded after Flight ET302 crashed, killing 157 people, months after a Lion Air flight crashed after takeoff from Indonesia, killing all 189 people on board. According to the report, pilots ârepeatedlyâ followed procedures recommended by Boeing before the crash but âwere not able to control the aircraft.â Ethiopiaâs minister of transport, Dagmawit Moges, has told Boeing to review the automated flight-control system that is suspected of forcing the planeâs nose down. She said investigators should confirm the problem is solved before allowing the 737 back into the air. Chief executive of Ethiopian Airlines, Tewolde GebreMariam, said he was âvery proudâ of the pilotsâ âhigh level of professional performanceâ and added: âIt was very unfortunate they could not recover the airplane from the persistence of nosediving.â