Batik Air Boeing Co. Aircraft. 737 Max 8, operated by Lion Air Center, sits on the pavement of Soekarno-Hatta International Airport in Cenkareng, Indonesia, on Tuesday, March 12, 2019.
Dimas Ardian | Bloomberg | Getty Images
Indonesia recommends stricter control of automated control systems, better design of flight cabin alerts and reporting of a more diverse pilot population following the Boeing 737 MAX crash, according to a copy of a final report seen by Reuters .
The report of the crash of the Lion Air plane on 29 October 201
Less than five months after the crash at Lion Air, Ethiopian Airlines 737 MAX crashed, causing a global grounding for the model and causing a corporate crisis in Boeing, the world's largest aircraft manufacturer.
Indonesian investigators on Wednesday reported to victims' families that a combination of factors contributed to the crash, including mechanical and structural problems and lack of documentation of how the systems would behave.
Flaws in flight crew communication and the manual operation of the aircraft contributed to the crash, as did Para. errors and distractions in the cockpit, according to slides presented to families.
The final report said that the first officer was not familiar with the procedures and showed problems with the operation of the aircraft during training.
The report also found that a critical sensor providing data to an anti-restraint system was incorrectly calibrated by a Florida service center and that there were strong indications that it was not tested during installation by Lion Air service personnel.
Lion Air should have grounded the jet due to malfunctioning earlier flights, the report said, adding that 31 logs were missing from the airline's maintenance logs.
Lion Air did not respond to a request for comment.
In the report, Indonesian regulators recommend redesigning the anti-lock braking system known as MCAS, which automatically pushes the nose of the aircraft down, leaving pilots to fight for control.
Boeing has already said that it will revamp the system and provide more information in the pilot manuals.
According to the report, Boeing's safety assessment suggests that pilots will respond within three seconds of a system malfunction, but in an emergency flight and one who experienced the same problem the previous night,
Boeing stated that it could not to comment before the report is published.
A group of international air safety regulators this month also blamed Boeing for the assumptions made in the design of the 737 MAX and discovered it. areas where Boeing can improve processes.