Indonesian investigators said that a string of failures led to the crash of a Lion Air Boeing 737 Max aircraft last October, at a press conference in Jakarta on Friday.
According to the final report released by air crash investigators, the crash was caused by a set of interconnected problems, from design-related issues to a lack of information about the airplane system, the Maneuvering Characteristics Augmentation System (MCAS).
Indonesia's National Transportation Safety Committee (NTSC) Chief Investigator Nurcahyo Utomo reported that there were nine "contributing factors" that "are connected [to] each other."
"If one of them [had] not [occurred] on that day, the accident maybe [would not have] happened," said Utomo.
The NTSC lead investigator also said that "incorrect assumptions" were made about "the pilot's response to the malfunction of MCAS."
In October 2018, Lion Air Flight JT-610 crashed into the Java Sea, killing all 189 passengers and crew on board. In March, an Ethiopian Airlines Boeing 737 MAX 8 crashed shortly after take-off from Addis Ababa, killing all 157 people on board. The incident led to the grounding of the entire Boeing 737 Max fleet.