Indonesia: Two pilots failed to complete the necessary procedures as a result of the Lion Air jet crashing last year, the investigation report concluded.

Indonesia's National Road Safety Commission today released its final investigation report on the Lion Air crash that killed 189 people on October 29, 2018, pointing out the causes of the disaster. .

During the flight, the cop was unable to quickly review the catalog in the flight manual or perform operations that he should have memorized, according to the report. The committee also said that the co-pilot had shown poor capacity during the training process.

Meanwhile, the captain did not fully summarize the situation for the co-pilot when he handed over control of the aircraft to him just before the plane began to plunge, the report added.

The report noted that according to the contents of the cockpit sounding device, the co-pilot told the captain that the flight was not on his original schedule and that he was called at 4 am. In response, the captain said he also had the flu.

Indonesia's National Road Safety Commission also criticized the design of the Flight Control Enhancement System (MCAS) on the 737 MAX, saying that MCAS had automatically pushed the nose down, causing the pilots to lose control. During the flight, the control arm was pulled so heavily by the MCAS that the pilot had to use a strong force of 47 kg to counteract the automatic system.

"The design and certification of MCAS did not take into account the possibility of losing control of the aircraft," the report said. Boeing has been researching to redesign the MCAS even though it has not been certified by the FAA.

An important sensor providing data for MCAS is also incorrectly calibrated and it is highly likely that it was not tested by Lion Air maintenance staff during the installation, the report said, adding that the security log Airline maintenance in October 2018 was 31 pages missing.

Boeing is facing the worst crisis in history, after two consecutive crashes by Ethiopian Airlines in March and Lion Air in Indonesia five months earlier. The two accidents are all related to the MCAS system, making the 737 MAX series banned from flying around the world for more than 7 months. Boeing said it suffered at least $ 8 billion in damage from the crisis.

The Indonesian report also said Boeing's safety assessment said pilots would react within three seconds after the system crash but on both crashed flights, both crews took about 8 seconds to give a response. The report calls for systems that should be designed to suit commercial pilots, rather than just for skilled test pilots.

Indonesian investigators also pointed out that the FAA has authorized Boeing to self-certify the safety of the aircraft, recommending that all certification processes must be closely monitored.