Boeing Knew the AOA Disagree Alert on the 737 Max Didn’t Work

In a Sunday statement, Boeing explained that its engineers found that the AOA disagree alert was incorrectly set as linked to the AOA indicator, an optional feature purchased by only about one-fifth of 737 MAX buyers. Boeing did “discuss the status of the AOA disagree alert with the FAA” after the Lion Air crash, the manufacturer said, and the November 2018 airworthiness directive clarified that the alert was not available to operators without the premium AOA indicator option. As part of the updates to the 737 MAX, Boeing said that before its best-selling plane returns to service, the AOA disagree alert will be corrected to be a standalone feature available to all operators and separate from the optional AOA indicator.

Source: www.aviationtoday.com