Boeing didn’t tell Southwest Airlines a standard safety feature on 737 MAX jets had been deactivated when the carrier began flying them in 2017 - WSJ
Boeing Didn't Advise Airlines, FAA That It Shut Off Warning System
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April 28, 2019 - by By Andy Pasztor for wsj.com
- Boeing Didn't Advise Airlines, FAA That It Shut Off Warning System
Boeing Co. BA -0.53% didn't tell Southwest Airlines Co. LUV -0.69%and other carriers when they began flying its 737 MAX jets that a safety feature found on earlier models that warns pilots about malfunctioning sensors had been deactivated, according to government and industry officials.
Federal Aviation Administration safety inspectors and supervisors responsible for monitoring Southwest, the largest 737 MAX customer, also were unaware of the change, the officials said.
The alerts inform pilots whether a sensor known as an "angle-of-attack vane" is transmitting errant data about the pitch of a plane's nose. Accident investigators have linked such bad data to the deadly Ethiopian Airlines crash in March and the Lion Air crash last year; both planes lacked the alert system.
In the 737 MAX, which features a new automated stall-prevention system called MCAS, Boeing made those alerts optional...