#737 max flight control system software“There is no complete clarity about what happened with the Ethiopian Airlines flight and whether the software fix and additional pilot training would be regarded as a sufficient solution to get the planes back into commercial service,” he said. A final report is not due for many months.Īviation consultant John Strickland, of JLS Consulting, said based on the “very limited information” that was provided by the Ethiopians on Thursday, there was not “complete clarity” that could determine when Boeing’s Max aircraft could fly again. In line with international rules on air accidents, the preliminary report did not attribute blame. However, he also said that, from data collected, there was no evidence that any foreign object had damaged the aircraft and caused the crash.Īsked whether Boeing agreed with the preliminary investigation, he said the US National Transportation Safety Board, which was representing Boeing in the probe, was “in agreement”.īoeing said it was reviewing the report. “Since repetitive, uncommanded aircraft nose-down actions were noticed in this preliminary investigation, it is recommended the aircraft flight control system shall be reviewed by the manufacturer,” Ms Moges said.Īmdiye Ayalew, head of the Ethiopian investigation, said it was still too early to say whether there was a “structural design problem” with Boeing’s aircraft. Some 346 people died in the two accidents, which left no survivors. MCAS receives information from sensors on the angle of the aircraft and is unique to the Max.Įarlier versions of the 737 have different stall-protection systems that do not automatically drive down the nose. MCAS is an automated stall-prevention system that if triggered can, under certain circumstances, try to force down the nose of the aircraft even if pilots are flying it manually, leading to a steep dive and making the jet hard to control. The tragedy followed the crash in October of a Lion Air 737 Max flight in Indonesia, in which the so-called “manoeuvring characteristics augmentation system” (MCAS) appears to have contributed to bringing the aircraft down. InvestigationsĪs result, investigations have concluded that Boeing should be required to review the flight control system on its 737 Max aircraft before the jets are permitted to fly again, she said.Īviation regulators grounded the 737 Max worldwide in the wake of the crash, raising public concern over the safety of the Max, the newest version of the 737. The twin crashes have provoked a crisis of confidence at Boeing and the procedures used by the US Federal Aviation Administration (FAA) to certify aircraft as safe to fly.Įthiopian minister of transport Dagmawit Moges said the crew of the Ethiopian Airlines flight from Addis Ababa to Nairobi on March 10th "performed all the procedures repeatedly provided by the manufacturer but were not able to control the aircraft". The preliminary findings will heap pressure on the embattled aircraft manufacturer after the same systems were implicated in the crash of a Lion Air flight in Indonesia last year. #737 max flight control system fullEthiopian investigators have called on Boeing to carry out a full review of the anti-stall systems on its 737 Max aircraft before they are allowed to fly again after finding pilots were not to blame for a crash near Addis Ababa last month.
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