Lion Air Flight 610 and Ethiopian Airlines Flight 302 (REMAKES)

On October 29, 2018, Lion Air Flight 610, a 737 MAX 8, crashed into the Java Sea 13 minutes after takeoff from Soekarno–Hatta International Airport, Jakarta, Indonesia. The flight was a scheduled domestic flight to Depati Amir Airport, Pangkal Pinang, Indonesia. All 189 people on board died. This was the first fatal aviation crash and first hull loss of a 737 MAX. The aircraft had been delivered to Lion Air two months earlier.[229][230] People familiar with the investigation reported that during a flight piloted by a different crew on the day before the crash, the same aircraft experienced a similar malfunction but an extra pilot sitting in the cockpit jumpseat correctly diagnosed the problem and told the crew how to disable the malfunctioning MCAS flight-control system.[231] Indonesia's National Transportation Safety Committee released its final report into the crash on October 25, 2019,[232] attributing the crash to the MCAS pushing the aircraft into a dive due to data from a faulty angle-of-attack sensor. Following the Lion Air crash, Boeing issued an operational manual guidance, advising airlines on how to address erroneous cockpit readings.
On March 10, 2019, Ethiopian Airlines Flight 302, a 737 MAX 8, crashed approximately six minutes after takeoff from Addis Ababa, Ethiopia,[234] on a scheduled flight to Nairobi, Kenya,[235] killing all 149 passengers and 8 crew members on board. The aircraft was four months old at the time.[236] The cause of the crash was initially unclear, though the aircraft's vertical speed after takeoff was reported to be unstable.[237] Evidence retrieved on the crash site suggests, that at the time of the crash, the aircraft was configured to dive, similar to Lion Air Flight 610.[238] On April 4, Ethiopian transport minister Dagmawit Moges stated that the crew "performed all the procedures repeatedly provided by the manufacturer but was not able to control the aircraft."

Credit goes to Mayday: Air Crash Investigation and Downfall: The Case Against Boeing