There wasn't a "sensors disagree" alert in the Lion Air plane because they didn't have installed the optional AOA Disagree indicator. As comparison, Southwest

There wasn't a "sensors disagree" alert in the Lion Air plane because they didn't have installed the optional AOA Disagree indicator. As comparison, Southwest had the indicator but has now also installed an enhanced AOA Disagree indicator as a result of the Lion incident https://theaircurrent.com/aviation-safety/southwest-airlines-is-adding-new-angle-of-attack-indicators-to-its-737-max-fleet/ https://theaircurrent.com/aviation-safety/southwest-airlines...