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Boeing publicly released details about the planned 737 MAX software update on its website late Monday.
A company spokesman confirmed the update would use feeds from multiple sensors in the MAX’s stall-prevention system—instead of the current reliance on a single sensor.
The change was prompted by preliminary results from the Indonesian crash investigation indicating that erroneous data from a single sensor, which measures the angle of the plane’s nose, caused the stall-prevention system to misfire. Then, a series of events put the aircraft into a dangerous dive.