Boeing fix will prevent repeated activation of anti-stall system: sources

A Boeing software fix for the grounded 737 MAX will prevent repeated operation of an anti-stall system at the centre of safety concerns and deactivate it altogether if 2 sensors disagree too much, people familiar with pilot briefings said. Boeing has said it will outline a software fix in coming days aimed at addressing the situation faced by Lion Air pilots. Airline briefings started Saturday. Pilots have been told that the MCAS system - which forces the nose downwards to avoid a stall, or loss of lift - will only operate 1 time for each event rather than impose repeated corrections like those believed to have pushed the Lion Air jet into a dive, the people familiar with the briefings said. Additionally, MCAS will be disabled whenever 2 sensors that measure the 'angle of attack' differ too widely. <br/>