French aviation safety authorities this week joined U.S. investigators in a harsh critique of the final report by Ethiopian authorities into the March 2019 crash of a Boeing 737 Max. The long-delayed Ethiopian government report into the crash of Ethiopian Airlines Flight 302 that killed all 157 people on board laid blame solely on Boeing. “Repetitive and uncommanded airplane-nose-down inputs” from a new flight control system on the Max, triggered by a single faulty sensor, put the airplane in an “unrecoverable” dive, the Ethiopian report, released Dec. 23, concludes. The subsequent French and …