Boeing anti-stall software under scrutiny as Ethiopia prepares crash report

. But one of the sources said investigators were studying the possibility that the software started working again without human intervention.

Boeing shares were down 1.5 per cent at 1450 GMT. They have lost more than 8.5 per cent since the Ethiopian crash.Getting the planes flying again depends partly on the role that Boeing design features are found to have played in the crash, though investigators are also paying attention to airline operations, crew actions and regulatory measures.

Now, the investigation has turned toward how MCAS was initially disabled by pilots, but then appeared to resume sending automated instructions to point downwards before the jet plunged to the ground, the two sources said. Disabling the system does not shut down MCAS completely but severs an electrical link between the software’s attempts to give orders to push the plane lower and the actual controls, a person familiar with the aircraft system said.

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Ethiopian Airlines pilots reportedly turned off anti-stall software, but it re-engaged before crashNEW: Boeing anti-stall software on a doomed Ethiopian Airlines jet reportedly re-engaged as many as four times after the crew initially turned it off. Oh Boeing you've got blood on your hands.
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