The Boeing 737 MAX is the fourth generation of the Boeing 737, a narrow-body airliner manufactured by Boeing Commercial Airplanes. The 737 MAX has been involved in two fatal accidents: Lion Air Flight 610 in late 2018 and Ethiopian Airlines Flight 302 in early 2019. The aircraft was grounded worldwide from March 2019 to November 2020, with the FAA garnering criticism for being the last major authority to ground it. FAA cleared the aircraft to return to service on November 18, 2020, subject to mandated design and training changes.