The Department of Transportation is investigating the Federal Aviation Administration's approval of Boeing's 737 MAX planes, people with knowledge of the matter told The Wall Street Journal on Sunday. The probe is looking at an anti-stall safety system suspected of playing a role in the October crash of Lion Air Flight 610, which killed 189 people. Investigators are working to determine if this same system was behind last week's crash of an Ethiopian Airlines jet shortly after takeoff from Addis Ababa; that accident left 157 people dead. The inquiry was launched following the Lion Air crash, the Journal reports, and is being conducted by the department's inspector general.
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