However , it has proven susceptible to erroneous activation , as in the cases of Lion Air Flight 610 and Ethiopian Airlines Flight 302 . Flaws found in the MCAS concept , in crew training resources and operational procedures , and other flight systems have resulted in a worldwide grounding of the airliner , pending accident investigations , certification inquiry , and necessary changes to the MCAS software , cockpit instruments , and crew manuals and training
Lion Air Flight 610
Lion Air Flight 610
Maneuvering Characteristics Augmentation System