Boeing’s fleet of 737 Max jets remain grounded in the wake of two crashes that occurred shortly after takeoff and within five months of each other. Both crashes killed all passengers on board, a total of 346 people, and the jets’ black box data recorders have revealed many similarities between the two incidents. Both jets were equipped with Boeing’s newly implemented stall-prevention software called the Maneuvering Characteristics Augmentation System (MCAS). The system automatically adjusts the pitch of the aircraft, but it malfunctioned in both crashes when MCAS seized control from the pilots and plunged the jets into the ground. The Federal Aviation Administration (FAA) has not yet announced when these jets will be allowed to fly again, although test flights have recently been conducted.