Investigators on Wednesday provided victims’ relatives with a summary of their final report on the crash, which killed 189 people. Details from the briefing for family members were shared with CNN by Anton Sahadi, a spokesperson for the relatives. The report summary said that faulty “assumptions” were made during the design and certification of the 737 Max about how pilots would respond to malfunctions by the Maneuvering Characteristics Augmentation System (MCAS), according to the presentation seen by CNN. MCAS lowers the nose of the plane when it receives information that the aircraft is flying too slowly or steeply, and at risk of stalling. The system was vulnerable because it relied on a single angle of attack (AOA) sensor, investigators said. The AOA sensor on the doomed Lion Air plane had been miscalibrated during a repair, according to investigators. But the airline’s maintenance crews and pilots couldn’t identify the problem because one of the aircraft’s safety features — the AOA Disagree alert — was not “correctly enabled during Boeing 737-8 (Max) development,” they said. Dian Andriani lost her 24-year-old son Muhammad Ravi Andrian in the crash. She told CNN that she’s unhappy with the explanation given by investigators and that there… Read full this story
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